Quarterlytics / Healthcare / Biotechnology / Five Prime Therapeutics Inc

Five Prime Therapeutics Inc

fprx · NASDAQ Healthcare
Claim this profile
Ticker fprx
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Employees 51-200
← All annual reports
FY2017 Annual Report · Five Prime Therapeutics Inc
Sign in to download
Loading PDF…
2017  
Annual Report

(cid:43)(cid:44)(cid:40)(cid:57)(cid:3)(cid:45)(cid:48)(cid:61)(cid:44)(cid:3)(cid:55)(cid:57)(cid:48) (cid:52)(cid:44) (cid:3)(cid:58)(cid:59)(cid:54)(cid:42)(cid:50) (cid:47)(cid:54)(cid:51) (cid:43) (cid:44) (cid:57)(cid:58)

(cid:62)(cid:76)(cid:3) (cid:72)(cid:91)(cid:3) (cid:45)(cid:80)(cid:93)(cid:76)(cid:3) (cid:55)(cid:89)(cid:80)(cid:84)(cid:76)(cid:3) (cid:59)(cid:79)(cid:76)(cid:89)(cid:72)(cid:87)(cid:76)(cid:92)(cid:91)(cid:80)(cid:74)(cid:90)(cid:3) (cid:72)(cid:89)(cid:76)(cid:3) (cid:73)(cid:92)(cid:80)(cid:83)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3) (cid:72)(cid:3) (cid:74)(cid:86)(cid:84)(cid:84)(cid:92)(cid:85)(cid:80)(cid:91)(cid:96)(cid:3) (cid:72)(cid:89)(cid:86)(cid:92)(cid:85)(cid:75)(cid:3) (cid:90)(cid:74)(cid:80)(cid:76)(cid:85)(cid:91)(cid:80)(cid:196)(cid:74)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:91)(cid:89)(cid:72)(cid:85)(cid:90)(cid:83)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:72)(cid:83)(cid:3) (cid:80)(cid:85)(cid:85)(cid:86)(cid:93)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:21)(cid:3) (cid:54)(cid:92)(cid:89)(cid:3)
extraordinary  people  collaborate  to  discover  and  develop  unique  protein  therapeutics  for  patients  around  the 

(cid:94)(cid:86)(cid:89)(cid:83)(cid:75)(cid:3)(cid:94)(cid:79)(cid:86)(cid:3)(cid:72)(cid:89)(cid:76)(cid:3)(cid:80)(cid:85)(cid:3)(cid:90)(cid:76)(cid:89)(cid:80)(cid:86)(cid:92)(cid:90)(cid:3)(cid:85)(cid:76)(cid:76)(cid:75)(cid:3)(cid:86)(cid:77)(cid:3)(cid:85)(cid:76)(cid:94)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:73)(cid:76)(cid:91)(cid:91)(cid:76)(cid:89)(cid:3)(cid:91)(cid:89)(cid:76)(cid:72)(cid:91)(cid:84)(cid:76)(cid:85)(cid:91)(cid:3)(cid:86)(cid:87)(cid:91)(cid:80)(cid:86)(cid:85)(cid:90)(cid:21)(cid:3)

(cid:62)(cid:76)(cid:3)(cid:72)(cid:89)(cid:76)(cid:3)(cid:87)(cid:89)(cid:86)(cid:92)(cid:75)(cid:3)(cid:86)(cid:77)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:74)(cid:86)(cid:84)(cid:87)(cid:76)(cid:83)(cid:83)(cid:80)(cid:85)(cid:78)(cid:3)(cid:93)(cid:72)(cid:83)(cid:92)(cid:76)(cid:3)(cid:87)(cid:89)(cid:86)(cid:87)(cid:86)(cid:90)(cid:80)(cid:91)(cid:80)(cid:86)(cid:85)(cid:21)(cid:3)

•  First,(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:74)(cid:86)(cid:84)(cid:87)(cid:89)(cid:76)(cid:79)(cid:76)(cid:85)(cid:90)(cid:80)(cid:93)(cid:76)(cid:3)(cid:87)(cid:89)(cid:86)(cid:87)(cid:89)(cid:80)(cid:76)(cid:91)(cid:72)(cid:89)(cid:96)(cid:3)(cid:83)(cid:80)(cid:73)(cid:89)(cid:72)(cid:89)(cid:80)(cid:76)(cid:90)(cid:3)(cid:86)(cid:77)(cid:3)(cid:91)(cid:79)(cid:76)(cid:3)(cid:76)(cid:95)(cid:91)(cid:89)(cid:72)(cid:74)(cid:76)(cid:83)(cid:83)(cid:92)(cid:83)(cid:72)(cid:89)(cid:3)(cid:87)(cid:89)(cid:86)(cid:91)(cid:76)(cid:86)(cid:84)(cid:76)(cid:19)(cid:3)(cid:75)(cid:80)(cid:584)(cid:76)(cid:89)(cid:76)(cid:85)(cid:91)(cid:80)(cid:72)(cid:91)(cid:76)(cid:75)(cid:3)(cid:90)(cid:74)(cid:89)(cid:76)(cid:76)(cid:85)(cid:80)(cid:85)(cid:78)(cid:3)(cid:74)(cid:72)(cid:87)(cid:72)(cid:73)(cid:80)(cid:83)(cid:80)(cid:91)(cid:80)(cid:76)(cid:90)(cid:3)
and protein therapeutic generation and engineering capabilities constitute a unique and powerful Investigational 

(cid:53)(cid:76)(cid:94)(cid:3)(cid:43)(cid:89)(cid:92)(cid:78)(cid:3)(cid:15)(cid:48)(cid:53)(cid:43)(cid:16)(cid:3)(cid:76)(cid:85)(cid:78)(cid:80)(cid:85)(cid:76)(cid:21)(cid:3)(cid:54)(cid:92)(cid:89)(cid:3)(cid:90)(cid:92)(cid:74)(cid:74)(cid:76)(cid:90)(cid:90)(cid:3)(cid:94)(cid:80)(cid:91)(cid:79)(cid:3)(cid:91)(cid:79)(cid:80)(cid:90)(cid:3)(cid:48)(cid:53)(cid:43)(cid:3)(cid:76)(cid:85)(cid:78)(cid:80)(cid:85)(cid:76)(cid:3)(cid:72)(cid:89)(cid:80)(cid:90)(cid:76)(cid:90)(cid:3)(cid:77)(cid:89)(cid:86)(cid:84)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:72)(cid:73)(cid:80)(cid:83)(cid:80)(cid:91)(cid:96)(cid:3)(cid:91)(cid:86)(cid:3)(cid:72)(cid:85)(cid:90)(cid:94)(cid:76)(cid:89)(cid:3)(cid:92)(cid:85)(cid:73)(cid:80)(cid:72)(cid:90)(cid:76)(cid:75)(cid:3)(cid:88)(cid:92)(cid:76)(cid:90)(cid:91)(cid:80)(cid:86)(cid:85)(cid:90)(cid:3)
about  the  fundamental  role  that  thousands  of  extracellular  signaling  proteins  play  in  the  processes  and 

(cid:84)(cid:76)(cid:74)(cid:79)(cid:72)(cid:85)(cid:80)(cid:90)(cid:84)(cid:90)(cid:3)(cid:86)(cid:77)(cid:3)(cid:93)(cid:72)(cid:89)(cid:80)(cid:86)(cid:92)(cid:90)(cid:3)(cid:75)(cid:80)(cid:90)(cid:76)(cid:72)(cid:90)(cid:76)(cid:90)(cid:21)(cid:3)(cid:60)(cid:90)(cid:80)(cid:85)(cid:78)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:80)(cid:85)(cid:75)(cid:92)(cid:90)(cid:91)(cid:89)(cid:96)(cid:20)(cid:83)(cid:76)(cid:72)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3)(cid:76)(cid:85)(cid:78)(cid:80)(cid:85)(cid:76)(cid:19)(cid:3)(cid:94)(cid:76)(cid:3)(cid:79)(cid:72)(cid:93)(cid:76)(cid:3)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:80)(cid:196)(cid:76)(cid:75)(cid:3)(cid:85)(cid:86)(cid:93)(cid:76)(cid:83)(cid:3)(cid:87)(cid:72)(cid:91)(cid:79)(cid:94)(cid:72)(cid:96)(cid:90)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)
(cid:91)(cid:72)(cid:89)(cid:78)(cid:76)(cid:91)(cid:90)(cid:3)(cid:80)(cid:85)(cid:3)(cid:80)(cid:84)(cid:84)(cid:92)(cid:85)(cid:86)(cid:20)(cid:86)(cid:85)(cid:74)(cid:86)(cid:83)(cid:86)(cid:78)(cid:96)(cid:3)(cid:15)(cid:48)(cid:20)(cid:54)(cid:16)(cid:3)(cid:91)(cid:79)(cid:72)(cid:91)(cid:3)(cid:94)(cid:76)(cid:3)(cid:73)(cid:76)(cid:83)(cid:80)(cid:76)(cid:93)(cid:76)(cid:3)(cid:94)(cid:80)(cid:83)(cid:83)(cid:3)(cid:74)(cid:86)(cid:85)(cid:91)(cid:80)(cid:85)(cid:92)(cid:76)(cid:3)(cid:91)(cid:86)(cid:3)(cid:196)(cid:83)(cid:83)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:87)(cid:80)(cid:87)(cid:76)(cid:83)(cid:80)(cid:85)(cid:76)(cid:3)(cid:94)(cid:80)(cid:91)(cid:79)(cid:3)(cid:85)(cid:76)(cid:94)(cid:3)(cid:87)(cid:89)(cid:86)(cid:75)(cid:92)(cid:74)(cid:91)(cid:3)(cid:74)(cid:72)(cid:85)(cid:75)(cid:80)(cid:75)(cid:72)(cid:91)(cid:76)(cid:90)(cid:3)
(cid:73)(cid:76)(cid:96)(cid:86)(cid:85)(cid:75)(cid:3)(cid:91)(cid:79)(cid:86)(cid:90)(cid:76)(cid:3)(cid:91)(cid:79)(cid:72)(cid:91)(cid:3)(cid:94)(cid:76)(cid:3)(cid:79)(cid:72)(cid:93)(cid:76)(cid:3)(cid:72)(cid:83)(cid:89)(cid:76)(cid:72)(cid:75)(cid:96)(cid:3)(cid:75)(cid:80)(cid:90)(cid:74)(cid:83)(cid:86)(cid:90)(cid:76)(cid:75)(cid:21)

•  Second,(cid:3)(cid:94)(cid:76)(cid:3)(cid:79)(cid:72)(cid:93)(cid:76)(cid:3)(cid:72)(cid:3)(cid:89)(cid:72)(cid:87)(cid:80)(cid:75)(cid:83)(cid:96)(cid:3)(cid:76)(cid:95)(cid:87)(cid:72)(cid:85)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3)(cid:87)(cid:80)(cid:87)(cid:76)(cid:83)(cid:80)(cid:85)(cid:76)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:72)(cid:89)(cid:76)(cid:3)(cid:87)(cid:89)(cid:86)(cid:78)(cid:89)(cid:76)(cid:90)(cid:90)(cid:80)(cid:85)(cid:78)(cid:3)(cid:80)(cid:85)(cid:91)(cid:86)(cid:3)(cid:83)(cid:72)(cid:91)(cid:76)(cid:20)(cid:90)(cid:91)(cid:72)(cid:78)(cid:76)(cid:3)(cid:75)(cid:76)(cid:93)(cid:76)(cid:83)(cid:86)(cid:87)(cid:84)(cid:76)(cid:85)(cid:91)(cid:21)(cid:3)(cid:57)(cid:76)(cid:74)(cid:86)(cid:78)(cid:85)(cid:80)(cid:97)(cid:80)(cid:85)(cid:78)(cid:3)
(cid:91)(cid:79)(cid:76)(cid:3) (cid:80)(cid:84)(cid:87)(cid:86)(cid:89)(cid:91)(cid:72)(cid:85)(cid:74)(cid:76)(cid:3) (cid:86)(cid:77)(cid:3) (cid:48)(cid:20)(cid:54)(cid:19)(cid:3) (cid:80)(cid:85)(cid:3) (cid:25)(cid:23)(cid:24)(cid:26)(cid:19)(cid:3) (cid:94)(cid:76)(cid:3) (cid:90)(cid:79)(cid:80)(cid:77)(cid:91)(cid:76)(cid:75)(cid:3) (cid:91)(cid:79)(cid:76)(cid:3) (cid:77)(cid:86)(cid:74)(cid:92)(cid:90)(cid:3) (cid:86)(cid:77)(cid:3) (cid:86)(cid:92)(cid:89)(cid:3) (cid:80)(cid:85)(cid:91)(cid:76)(cid:89)(cid:85)(cid:72)(cid:83)(cid:3) (cid:89)(cid:76)(cid:90)(cid:76)(cid:72)(cid:89)(cid:74)(cid:79)(cid:3) (cid:76)(cid:584)(cid:86)(cid:89)(cid:91)(cid:90)(cid:3) (cid:91)(cid:86)(cid:3) (cid:91)(cid:79)(cid:76)(cid:3) (cid:75)(cid:80)(cid:90)(cid:74)(cid:86)(cid:93)(cid:76)(cid:89)(cid:96)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3)
(cid:75)(cid:76)(cid:93)(cid:76)(cid:83)(cid:86)(cid:87)(cid:84)(cid:76)(cid:85)(cid:91)(cid:3) (cid:86)(cid:77)(cid:3) (cid:48)(cid:20)(cid:54)(cid:3) (cid:87)(cid:89)(cid:86)(cid:91)(cid:76)(cid:80)(cid:85)(cid:3) (cid:91)(cid:79)(cid:76)(cid:89)(cid:72)(cid:87)(cid:76)(cid:92)(cid:91)(cid:80)(cid:74)(cid:90)(cid:21)(cid:3) (cid:62)(cid:76)(cid:3) (cid:79)(cid:72)(cid:93)(cid:76)(cid:3) (cid:72)(cid:75)(cid:93)(cid:72)(cid:85)(cid:74)(cid:76)(cid:75)(cid:3) (cid:91)(cid:94)(cid:86)(cid:3) (cid:86)(cid:77)(cid:3) (cid:91)(cid:79)(cid:76)(cid:90)(cid:76)(cid:3) (cid:72)(cid:90)(cid:90)(cid:76)(cid:91)(cid:90)(cid:3) (cid:80)(cid:85)(cid:91)(cid:86)(cid:3) (cid:91)(cid:79)(cid:76)(cid:3) (cid:74)(cid:83)(cid:80)(cid:85)(cid:80)(cid:74)(cid:19)(cid:3) (cid:80)(cid:85)(cid:74)(cid:83)(cid:92)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3)
(cid:74)(cid:72)(cid:73)(cid:80)(cid:89)(cid:72)(cid:83)(cid:80)(cid:97)(cid:92)(cid:84)(cid:72)(cid:73)(cid:3) (cid:15)(cid:45)(cid:55)(cid:40)(cid:23)(cid:23)(cid:31)(cid:16)(cid:19)(cid:3) (cid:72)(cid:85)(cid:3) (cid:80)(cid:85)(cid:93)(cid:76)(cid:90)(cid:91)(cid:80)(cid:78)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:72)(cid:83)(cid:3) (cid:42)(cid:58)(cid:45)(cid:20)(cid:24)(cid:3) (cid:89)(cid:76)(cid:74)(cid:76)(cid:87)(cid:91)(cid:86)(cid:89)(cid:3) (cid:72)(cid:85)(cid:91)(cid:80)(cid:73)(cid:86)(cid:75)(cid:96)(cid:3) (cid:91)(cid:79)(cid:72)(cid:91)(cid:3) (cid:94)(cid:76)(cid:3) (cid:72)(cid:89)(cid:76)(cid:3) (cid:76)(cid:93)(cid:72)(cid:83)(cid:92)(cid:72)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3) (cid:80)(cid:85)(cid:3) (cid:74)(cid:83)(cid:80)(cid:85)(cid:80)(cid:74)(cid:72)(cid:83)(cid:3) (cid:91)(cid:89)(cid:80)(cid:72)(cid:83)(cid:90)(cid:3)
(cid:80)(cid:85)(cid:3) (cid:86)(cid:85)(cid:74)(cid:86)(cid:83)(cid:86)(cid:78)(cid:96)(cid:3) (cid:80)(cid:85)(cid:75)(cid:80)(cid:74)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:90)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:80)(cid:85)(cid:3) (cid:87)(cid:80)(cid:78)(cid:84)(cid:76)(cid:85)(cid:91)(cid:76)(cid:75)(cid:3) (cid:93)(cid:80)(cid:83)(cid:83)(cid:86)(cid:85)(cid:86)(cid:75)(cid:92)(cid:83)(cid:72)(cid:89)(cid:3) (cid:90)(cid:96)(cid:85)(cid:86)(cid:93)(cid:80)(cid:91)(cid:80)(cid:90)(cid:3) (cid:15)(cid:55)(cid:61)(cid:53)(cid:58)(cid:16)(cid:19)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:73)(cid:76)(cid:84)(cid:72)(cid:89)(cid:80)(cid:91)(cid:92)(cid:97)(cid:92)(cid:84)(cid:72)(cid:73)(cid:3) (cid:15)(cid:45)(cid:55)(cid:40)(cid:24)(cid:27)(cid:27)(cid:16)(cid:19)(cid:3) (cid:72)(cid:85)(cid:3)
(cid:45)(cid:46)(cid:45)(cid:57)(cid:25)(cid:73)(cid:3) (cid:72)(cid:85)(cid:91)(cid:80)(cid:73)(cid:86)(cid:75)(cid:96)(cid:3) (cid:91)(cid:79)(cid:72)(cid:91)(cid:3) (cid:94)(cid:76)(cid:3) (cid:72)(cid:89)(cid:76)(cid:3) (cid:76)(cid:93)(cid:72)(cid:83)(cid:92)(cid:72)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3) (cid:72)(cid:90)(cid:3) (cid:72)(cid:3) (cid:91)(cid:72)(cid:89)(cid:78)(cid:76)(cid:91)(cid:76)(cid:75)(cid:3) (cid:48)(cid:20)(cid:54)(cid:3) (cid:91)(cid:79)(cid:76)(cid:89)(cid:72)(cid:87)(cid:96)(cid:3) (cid:77)(cid:86)(cid:89)(cid:3) (cid:91)(cid:92)(cid:84)(cid:86)(cid:89)(cid:90)(cid:3) (cid:91)(cid:79)(cid:72)(cid:91)(cid:3) (cid:86)(cid:93)(cid:76)(cid:89)(cid:76)(cid:95)(cid:87)(cid:89)(cid:76)(cid:90)(cid:90)(cid:3) (cid:45)(cid:46)(cid:45)(cid:57)(cid:25)(cid:73)(cid:3)
or  amplify  the  FGFR2(cid:3) (cid:78)(cid:76)(cid:85)(cid:76)(cid:19)(cid:3) (cid:80)(cid:85)(cid:74)(cid:83)(cid:92)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3) (cid:78)(cid:72)(cid:90)(cid:91)(cid:89)(cid:80)(cid:74)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:78)(cid:72)(cid:90)(cid:91)(cid:89)(cid:86)(cid:76)(cid:90)(cid:86)(cid:87)(cid:79)(cid:72)(cid:78)(cid:76)(cid:72)(cid:83)(cid:3) (cid:81)(cid:92)(cid:85)(cid:74)(cid:91)(cid:80)(cid:86)(cid:85)(cid:3) (cid:74)(cid:72)(cid:85)(cid:74)(cid:76)(cid:89)(cid:21)(cid:3) (cid:62)(cid:76)(cid:3) (cid:76)(cid:95)(cid:87)(cid:76)(cid:74)(cid:91)(cid:3) (cid:91)(cid:79)(cid:72)(cid:91)(cid:3) (cid:91)(cid:79)(cid:89)(cid:76)(cid:76)(cid:3)
additional  candidates  from  our  platform  will  advance  into  human  trials  this  year,  more  than  doubling  our 

(cid:74)(cid:83)(cid:80)(cid:85)(cid:80)(cid:74)(cid:72)(cid:83)(cid:20)(cid:90)(cid:91)(cid:72)(cid:78)(cid:76)(cid:3)(cid:87)(cid:86)(cid:89)(cid:91)(cid:77)(cid:86)(cid:83)(cid:80)(cid:86)(cid:21)

•  Third,(cid:3)(cid:94)(cid:76)(cid:3)(cid:74)(cid:86)(cid:85)(cid:91)(cid:80)(cid:85)(cid:92)(cid:76)(cid:3)(cid:91)(cid:86)(cid:3)(cid:76)(cid:85)(cid:91)(cid:76)(cid:89)(cid:3)(cid:80)(cid:85)(cid:91)(cid:86)(cid:3)(cid:90)(cid:91)(cid:89)(cid:72)(cid:91)(cid:76)(cid:78)(cid:80)(cid:74)(cid:3)(cid:74)(cid:86)(cid:83)(cid:83)(cid:72)(cid:73)(cid:86)(cid:89)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:90)(cid:3)(cid:91)(cid:86)(cid:3)(cid:72)(cid:74)(cid:74)(cid:76)(cid:83)(cid:76)(cid:89)(cid:72)(cid:91)(cid:76)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:87)(cid:72)(cid:91)(cid:79)(cid:3)(cid:91)(cid:86)(cid:3)(cid:78)(cid:83)(cid:86)(cid:73)(cid:72)(cid:83)(cid:3)(cid:74)(cid:86)(cid:84)(cid:84)(cid:76)(cid:89)(cid:74)(cid:80)(cid:72)(cid:83)(cid:80)(cid:97)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:19)(cid:3)
(cid:76)(cid:95)(cid:87)(cid:72)(cid:85)(cid:75)(cid:3) (cid:86)(cid:92)(cid:89)(cid:3) (cid:75)(cid:76)(cid:93)(cid:76)(cid:83)(cid:86)(cid:87)(cid:84)(cid:76)(cid:85)(cid:91)(cid:3) (cid:87)(cid:89)(cid:86)(cid:78)(cid:89)(cid:72)(cid:84)(cid:90)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:90)(cid:76)(cid:74)(cid:92)(cid:89)(cid:76)(cid:3) (cid:77)(cid:92)(cid:85)(cid:75)(cid:80)(cid:85)(cid:78)(cid:21)(cid:3) (cid:62)(cid:76)(cid:3) (cid:73)(cid:76)(cid:83)(cid:80)(cid:76)(cid:93)(cid:76)(cid:3) (cid:91)(cid:79)(cid:76)(cid:90)(cid:76)(cid:3) (cid:90)(cid:91)(cid:89)(cid:72)(cid:91)(cid:76)(cid:78)(cid:80)(cid:74)(cid:3) (cid:72)(cid:83)(cid:83)(cid:80)(cid:72)(cid:85)(cid:74)(cid:76)(cid:90)(cid:19)(cid:3) (cid:74)(cid:86)(cid:92)(cid:87)(cid:83)(cid:76)(cid:75)(cid:3) (cid:94)(cid:80)(cid:91)(cid:79)(cid:3)
(cid:86)(cid:92)(cid:89)(cid:3) (cid:90)(cid:91)(cid:89)(cid:86)(cid:85)(cid:78)(cid:3) (cid:73)(cid:72)(cid:83)(cid:72)(cid:85)(cid:74)(cid:76)(cid:3) (cid:90)(cid:79)(cid:76)(cid:76)(cid:91)(cid:19)(cid:3) (cid:94)(cid:80)(cid:83)(cid:83)(cid:3) (cid:72)(cid:83)(cid:83)(cid:86)(cid:94)(cid:3) (cid:92)(cid:90)(cid:3) (cid:91)(cid:86)(cid:3) (cid:75)(cid:76)(cid:93)(cid:76)(cid:83)(cid:86)(cid:87)(cid:3) (cid:86)(cid:92)(cid:89)(cid:3) (cid:72)(cid:90)(cid:90)(cid:76)(cid:91)(cid:90)(cid:3) (cid:80)(cid:85)(cid:3) (cid:72)(cid:3) (cid:94)(cid:72)(cid:96)(cid:3) (cid:91)(cid:79)(cid:72)(cid:91)(cid:3) (cid:76)(cid:85)(cid:90)(cid:92)(cid:89)(cid:76)(cid:90)(cid:3) (cid:86)(cid:92)(cid:89)(cid:3) (cid:83)(cid:86)(cid:85)(cid:78)(cid:20)(cid:91)(cid:76)(cid:89)(cid:84)(cid:3) (cid:78)(cid:89)(cid:86)(cid:94)(cid:91)(cid:79)(cid:21)(cid:3)
The  potential  of  our  current  programs  has  been  validated  by  a  growing  number  of  prominent  development 

(cid:87)(cid:72)(cid:89)(cid:91)(cid:85)(cid:76)(cid:89)(cid:90)(cid:79)(cid:80)(cid:87)(cid:90)(cid:19)(cid:3) (cid:80)(cid:85)(cid:74)(cid:83)(cid:92)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3) (cid:83)(cid:76)(cid:72)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3) (cid:87)(cid:79)(cid:72)(cid:89)(cid:84)(cid:72)(cid:74)(cid:76)(cid:92)(cid:91)(cid:80)(cid:74)(cid:72)(cid:83)(cid:3) (cid:74)(cid:86)(cid:84)(cid:87)(cid:72)(cid:85)(cid:80)(cid:76)(cid:90)(cid:3) (cid:90)(cid:92)(cid:74)(cid:79)(cid:3) (cid:72)(cid:90)(cid:3) (cid:41)(cid:52)(cid:58)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:65)(cid:72)(cid:80)(cid:3) (cid:51)(cid:72)(cid:73)(cid:19)(cid:3) (cid:94)(cid:80)(cid:91)(cid:79)(cid:3) (cid:94)(cid:79)(cid:86)(cid:84)(cid:3) (cid:94)(cid:76)(cid:3) (cid:79)(cid:72)(cid:93)(cid:76)(cid:3)
(cid:87)(cid:72)(cid:89)(cid:91)(cid:85)(cid:76)(cid:89)(cid:76)(cid:75)(cid:3)(cid:91)(cid:86)(cid:3)(cid:72)(cid:75)(cid:93)(cid:72)(cid:85)(cid:74)(cid:76)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:83)(cid:76)(cid:72)(cid:75)(cid:3)(cid:87)(cid:89)(cid:86)(cid:78)(cid:89)(cid:72)(cid:84)(cid:90)(cid:21)(cid:3)(cid:59)(cid:79)(cid:76)(cid:90)(cid:76)(cid:3)(cid:72)(cid:78)(cid:89)(cid:76)(cid:76)(cid:84)(cid:76)(cid:85)(cid:91)(cid:90)(cid:3)(cid:79)(cid:72)(cid:93)(cid:76)(cid:3)(cid:78)(cid:76)(cid:85)(cid:76)(cid:89)(cid:72)(cid:91)(cid:76)(cid:75)(cid:3)(cid:86)(cid:93)(cid:76)(cid:89)(cid:3)(cid:11)(cid:29)(cid:28)(cid:23)(cid:3)(cid:84)(cid:80)(cid:83)(cid:83)(cid:80)(cid:86)(cid:85)(cid:3)(cid:80)(cid:85)(cid:3)(cid:85)(cid:86)(cid:85)(cid:20)(cid:75)(cid:80)(cid:83)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)
(cid:77)(cid:92)(cid:85)(cid:75)(cid:80)(cid:85)(cid:78)(cid:3)(cid:77)(cid:86)(cid:89)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:86)(cid:85)(cid:78)(cid:86)(cid:80)(cid:85)(cid:78)(cid:3)(cid:75)(cid:76)(cid:93)(cid:76)(cid:83)(cid:86)(cid:87)(cid:84)(cid:76)(cid:85)(cid:91)(cid:21)

(cid:48)(cid:3) (cid:79)(cid:72)(cid:93)(cid:76)(cid:3) (cid:78)(cid:89)(cid:76)(cid:72)(cid:91)(cid:3) (cid:74)(cid:86)(cid:85)(cid:196)(cid:75)(cid:76)(cid:85)(cid:74)(cid:76)(cid:3) (cid:80)(cid:85)(cid:3) (cid:91)(cid:79)(cid:76)(cid:3) (cid:77)(cid:92)(cid:91)(cid:92)(cid:89)(cid:76)(cid:3) (cid:86)(cid:77)(cid:3) (cid:45)(cid:80)(cid:93)(cid:76)(cid:3) (cid:55)(cid:89)(cid:80)(cid:84)(cid:76)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:73)(cid:76)(cid:83)(cid:80)(cid:76)(cid:93)(cid:76)(cid:3) (cid:91)(cid:79)(cid:72)(cid:91)(cid:3) (cid:77)(cid:76)(cid:94)(cid:3) (cid:74)(cid:86)(cid:84)(cid:87)(cid:72)(cid:85)(cid:80)(cid:76)(cid:90)(cid:3) (cid:86)(cid:77)(cid:3) (cid:86)(cid:92)(cid:89)(cid:3) (cid:90)(cid:80)(cid:97)(cid:76)(cid:3) (cid:79)(cid:72)(cid:93)(cid:76)(cid:3) (cid:90)(cid:80)(cid:84)(cid:80)(cid:83)(cid:72)(cid:89)(cid:3)
(cid:74)(cid:72)(cid:87)(cid:72)(cid:73)(cid:80)(cid:83)(cid:80)(cid:91)(cid:80)(cid:76)(cid:90)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:76)(cid:95)(cid:87)(cid:76)(cid:89)(cid:91)(cid:80)(cid:90)(cid:76)(cid:21)(cid:3)(cid:52)(cid:86)(cid:89)(cid:76)(cid:86)(cid:93)(cid:76)(cid:89)(cid:19)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:74)(cid:86)(cid:83)(cid:83)(cid:72)(cid:73)(cid:86)(cid:89)(cid:72)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:74)(cid:92)(cid:83)(cid:91)(cid:92)(cid:89)(cid:76)(cid:19)(cid:3)(cid:87)(cid:86)(cid:94)(cid:76)(cid:89)(cid:77)(cid:92)(cid:83)(cid:3)(cid:76)(cid:85)(cid:78)(cid:80)(cid:85)(cid:76)(cid:3)(cid:77)(cid:86)(cid:89)(cid:3)(cid:80)(cid:85)(cid:85)(cid:86)(cid:93)(cid:72)(cid:91)(cid:80)(cid:86)(cid:85)(cid:19)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:93)(cid:72)(cid:90)(cid:91)(cid:3)(cid:87)(cid:86)(cid:91)(cid:76)(cid:85)(cid:91)(cid:80)(cid:72)(cid:83)(cid:3)
(cid:91)(cid:86)(cid:3)(cid:91)(cid:89)(cid:72)(cid:85)(cid:90)(cid:77)(cid:86)(cid:89)(cid:84)(cid:3)(cid:87)(cid:72)(cid:91)(cid:80)(cid:76)(cid:85)(cid:91)(cid:3)(cid:86)(cid:92)(cid:91)(cid:74)(cid:86)(cid:84)(cid:76)(cid:90)(cid:3)(cid:80)(cid:85)(cid:3)(cid:90)(cid:76)(cid:89)(cid:80)(cid:86)(cid:92)(cid:90)(cid:3)(cid:75)(cid:80)(cid:90)(cid:76)(cid:72)(cid:90)(cid:76)(cid:90)(cid:19)(cid:3)(cid:84)(cid:72)(cid:82)(cid:76)(cid:3)(cid:45)(cid:80)(cid:93)(cid:76)(cid:3)(cid:55)(cid:89)(cid:80)(cid:84)(cid:76)(cid:3)(cid:59)(cid:79)(cid:76)(cid:89)(cid:72)(cid:87)(cid:76)(cid:92)(cid:91)(cid:80)(cid:74)(cid:90)(cid:3)(cid:72)(cid:3)(cid:83)(cid:76)(cid:72)(cid:75)(cid:76)(cid:89)(cid:3)(cid:80)(cid:85)(cid:3)(cid:48)(cid:20)(cid:54)(cid:21)(cid:3)

(cid:54)(cid:85)(cid:3) (cid:73)(cid:76)(cid:79)(cid:72)(cid:83)(cid:77)(cid:3) (cid:86)(cid:77)(cid:3) (cid:45)(cid:80)(cid:93)(cid:76)(cid:3) (cid:55)(cid:89)(cid:80)(cid:84)(cid:76)(cid:3) (cid:59)(cid:79)(cid:76)(cid:89)(cid:72)(cid:87)(cid:76)(cid:92)(cid:91)(cid:80)(cid:74)(cid:90)(cid:19)(cid:3) (cid:80)(cid:91)(cid:90)(cid:3) (cid:41)(cid:86)(cid:72)(cid:89)(cid:75)(cid:3) (cid:86)(cid:77)(cid:3) (cid:43)(cid:80)(cid:89)(cid:76)(cid:74)(cid:91)(cid:86)(cid:89)(cid:90)(cid:3) (cid:72)(cid:85)(cid:75)(cid:3) (cid:76)(cid:84)(cid:87)(cid:83)(cid:86)(cid:96)(cid:76)(cid:76)(cid:90)(cid:19)(cid:3) (cid:91)(cid:79)(cid:72)(cid:85)(cid:82)(cid:3) (cid:96)(cid:86)(cid:92)(cid:3) (cid:77)(cid:86)(cid:89)(cid:3) (cid:96)(cid:86)(cid:92)(cid:89)(cid:3) (cid:74)(cid:86)(cid:85)(cid:91)(cid:80)(cid:85)(cid:92)(cid:76)(cid:75)(cid:3)
(cid:90)(cid:92)(cid:87)(cid:87)(cid:86)(cid:89)(cid:91)(cid:19)(cid:3)(cid:72)(cid:85)(cid:75)(cid:3)(cid:94)(cid:76)(cid:3)(cid:83)(cid:86)(cid:86)(cid:82)(cid:3)(cid:77)(cid:86)(cid:89)(cid:94)(cid:72)(cid:89)(cid:75)(cid:3)(cid:91)(cid:86)(cid:3)(cid:92)(cid:87)(cid:75)(cid:72)(cid:91)(cid:80)(cid:85)(cid:78)(cid:3)(cid:96)(cid:86)(cid:92)(cid:3)(cid:86)(cid:85)(cid:3)(cid:86)(cid:92)(cid:89)(cid:3)(cid:87)(cid:89)(cid:86)(cid:78)(cid:89)(cid:76)(cid:90)(cid:90)(cid:21)(cid:3)

Aron Knickerbocker 
(cid:55)(cid:89)(cid:76)(cid:90)(cid:80)(cid:75)(cid:76)(cid:85)(cid:91)(cid:3)(cid:13)(cid:3)(cid:42)(cid:79)(cid:80)(cid:76)(cid:77)(cid:3)(cid:44)(cid:95)(cid:76)(cid:74)(cid:92)(cid:91)(cid:80)(cid:93)(cid:76)(cid:3)(cid:54)(cid:585)(cid:74)(cid:76)(cid:89) 
(cid:45)(cid:80)(cid:93)(cid:76)(cid:3)(cid:55)(cid:89)(cid:80)(cid:84)(cid:76)(cid:3)(cid:59)(cid:79)(cid:76)(cid:89)(cid:72)(cid:87)(cid:76)(cid:92)(cid:91)(cid:80)(cid:74)(cid:90)(cid:19)(cid:3)(cid:48)(cid:85)(cid:74)(cid:21)

UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
WASHINGTON, DC 20549 

FORM 10-K 

(cid:31)

(cid:31)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE 
ACT OF 1934 

For the fiscal year ended December 31, 2017 
or 

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
EXCHANGE ACT OF 1934 

For the transition period from      to      
Commission File Number: 001-36070 

Five Prime Therapeutics, Inc. 

(Exact name of registrant as specified in its charter) 

Delaware
(State or other jurisdiction of
incorporation or organization)

26-0038620
(IRS Employer
Identification No.)

111 Oyster Point Boulevard
South San Francisco, California 94080 
(415) 365-5600 
(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Securities registered pursuant to Section 12(b) of the Act: 

Title of Each Class
Common Stock, par value $0.001 per share

Name of Each Exchange on Which Registered
Nasdaq Global Select Market

Securities registered pursuant to Section 12(g) of the Act: None 

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  (cid:3)    No  (cid:31)  
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes  (cid:31)    No  (cid:3) 
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act 
of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject 
to such filing requirements for the past 90 days. Yes  (cid:3)    No  (cid:31) 
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data 
File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that 
the registrant was required to submit and post such files):    Yes  (cid:3)    No  (cid:31) 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be 
contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this 
Form 10-K or any amendment to this Form 10-K. (cid:31)
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting 
company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in 
Rule 12b-2 of the Exchange Act. (Check one): 

Large accelerated filer

Non-accelerated filer

  (cid:3)

   Accelerated filer

  (cid:31) (Do not check if a smaller reporting company)

   Smaller reporting company

  (cid:31)

  (cid:31)

Emerging growth company        

(cid:31) 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with 
any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. (cid:4)
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes  (cid:31)    No  (cid:3) 
As of June 30, 2017, the last business day of the registrant’s most recently completed second fiscal quarter, the aggregate market value of the 
registrant’s common stock held by non-affiliates of the registrant was approximately $619 million, based on the closing price of the registrant’s 
common stock on The Nasdaq Global Select Market on June 30, 2017 of $30.11 per share. Shares of the registrant’s common stock held by each 
officer and director and each person known to the registrant to own 10% or more of the outstanding common stock of the registrant have been 
excluded in that such persons may be deemed affiliates. This determination of affiliate status is not a determination for other purposes. 
As of February 20, 2018, the registrant had 34,860,499 shares of common stock, par value $0.001 per share, outstanding. 

DOCUMENTS INCORPORATED BY REFERENCE 
Portions of the definitive proxy statement, or the Proxy Statement, for the 2018 Annual Meeting of Stockholders of the registrant are incorporated 
by reference into Part III of this Annual Report on Form 10-K. The Proxy Statement will be filed with the Securities and Exchange Commission 
within 120 days of the registrant’s fiscal year ended December 31, 2017. 

 
 
 
 
 
 
 
 
 
 
Page

ii

1
30
59
59
59
59

60
62
63
81
81
81
81
84

85
85

85
85
85

TABLE OF CONTENTS 

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS AND INDUSTRY DATA.....
PART I
Item 1
Item1A
Item1B
Item 2
Item 3
Item 4

Business ............................................................................................................................................
Risk Factors.......................................................................................................................................
Unresolved Staff Comments .............................................................................................................
Properties ..........................................................................................................................................
Legal Proceedings .............................................................................................................................
Mine Safety Disclosures ...................................................................................................................

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of 

Equity Securities ..........................................................................................................................
Selected Financial Data.....................................................................................................................
Management’s Discussion and Analysis of Financial Condition and Results of Operations ...........
Quantitative and Qualitative Disclosures About Market Risk..........................................................
Financial Statements and Supplementary Data.................................................................................
Changes in and Disagreements With Accountants on Accounting and Financial Disclosure..........
Controls and Procedures ...................................................................................................................
Other Information .............................................................................................................................

Directors, Executive Officers and Corporate Governance................................................................
Executive Compensation...................................................................................................................
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 

Matters..........................................................................................................................................
Certain Relationships and Related Transactions, and Director Independence .................................
Principal Accountant Fees and Services ...........................................................................................

PART II
Item 5

Item 6
Item 7
Item 7A
Item 8
Item 9
Item 9A
Item 9B

PART III
Item 10
Item 11
Item 12

Item 13
Item 14

PART IV 
Item 15

Exhibits, Financial Statement Schedules ..........................................................................................

86

Signatures ...........................................................................................................................................................

90

In this report, unless otherwise stated or the context otherwise indicates, references to “Five Prime,” “the 
company,” “we,” “us,” “our” and similar references refer to Five Prime Therapeutics, Inc. The Five Prime logo and 
RIPPS® are our registered trademarks. This report also contains registered marks, trademarks and trade names of 
other companies. All other trademarks, registered marks and trade names appearing in this report are the property of 
their respective holders. 

i

 
 
 
 
 
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS 
AND INDUSTRY DATA 

This Annual Report on Form 10-K contains forward-looking statements. In some cases you can identify these 

statements by forward-looking words such as “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” 
“intend,” “could,” “would,” “project,” “plan,” “expect,” or similar expressions, or the negative or plural of these 
words or expressions. These forward-looking statements include statements concerning the following: 

•

•

•

•

•

•

•

•

•

•

•

•

•

•

our estimates regarding our expenses, revenues, anticipated capital requirements and our needs for 
additional financing; 

our receipt of future milestone payments and/or royalties, and the timing of such payments;

our or our partners’ ability to timely advance drug candidates into and through clinical data readouts and 
successful completion of clinical trials; 

the timing of the initiation, progress and results of preclinical studies and research and development 
programs; 

our expectations regarding the potential safety, efficacy or clinical utility of our product candidates; 

the implementation, timing and likelihood of success of our plans to develop companion diagnostics for 
our product candidates; 

our ability to establish and maintain collaborations and necessary licenses; 

the implementation of our business model and strategic plans for our business, product candidates and 
technology; 

the scope of protection we establish and maintain for intellectual property rights covering our product 
candidates and technology; 

the size of patient populations targeted by products we or our partners develop and market adoption of 
such products by physicians and patients; 

the timing or likelihood of regulatory filings and approvals; 

the ability to negotiate adequate reimbursement and pricing for our drug candidates with third-parties and 
government authorities;

developments relating to our competitors' and our industry; and 

our expectations regarding licensing, acquisitions and strategic operations. 

These statements are only current predictions and are subject to known and unknown risks, uncertainties and 
other factors that may cause our or our industry’s actual results, levels of activity, performance or achievements to 
be materially different from those anticipated by the forward-looking statements. We discuss many of these risks in 
this report in greater detail under the heading “Risk Factors” and elsewhere in this report. You should not rely upon 
forward-looking statements as predictions of future events. 

Although we believe that the expectations reflected in the forward-looking statements are reasonable, we 
cannot guarantee future results, levels of activity, performance, or achievements. Except as required by law, we are 
under no duty to update or revise any of the forward-looking statements, whether as a result of new information, 
future events or otherwise, after the date of this report. 

We obtained the industry, market and competitive position data in this annual report from our own internal 

estimates and research as well as from industry and general publications and research surveys and studies conducted 
by third-parties. While we believe that each of these studies and publications is reliable, we have not independently 
verified market and industry data from third-party sources. While we believe our internal company research is 
reliable and the market definitions we use are appropriate, neither such research nor these definitions have been 
verified by any independent source. 

ii

PART I. 

Item 1. Business. 

Our Company

We are a clinical-stage biotechnology company focused on discovering and developing innovative protein 
therapeutics to improve the lives of patients with serious diseases. Each of our product candidates has an innovative 
mechanism of action and addresses patient populations for which better therapies are needed. We have an emphasis 
in immuno-oncology, an area in which we have clinical, preclinical and discovery programs and product and 
discovery collaborations. In addition, we plan to use companion diagnostics where appropriate to allow us to select 
patients most likely to benefit from treatment with our product candidates. Our most advanced product candidates 
are identified below.

• Cabiralizumab (FPA008) is an antibody that inhibits colony stimulating factor-1, or CSF1, receptor, or 
CSF1R, that we are studying in clinical trials as a monotherapy in tenosynovial giant cell tumor, also 
known as diffuse pigmented villonodular synovitis, or PVNS, and in multiple cancers in combination with 
Bristol-Myers Squibb Company’s PD-1 immune checkpoint inhibitor, Opdivo® (nivolumab). In October 
2015, we entered into a license and collaboration agreement, or the cabiralizumab collaboration 
agreement, with Bristol-Myers Squibb Company, or BMS, pursuant to which we granted BMS an 
exclusive worldwide license for the development and commercialization of cabiralizumab.

•

•

Bemarituzumab (FPA144) is an antibody that inhibits fibroblast growth factor receptor 2b, or FGFR2b, 
that we are developing to treat patients with gastric (stomach) or gastroesophageal junction, or GEJ, 
cancer and bladder cancer. In December 2017, we entered into a license and collaboration agreement, or 
the China collaboration agreement, with Zai Lab (Shanghai) Co., Ltd., or Zai Lab, pursuant to which we 
granted Zai Lab an exclusive license to develop and commercialize bemarituzumab in China, Hong Kong, 
Macau and Taiwan.

FPA150 is a CD8 T cell checkpoint inhibitor antibody that targets B7-H4 that we are developing as a 
monotherapy in multiple cancers. We plan to begin a Phase 1 clinical trial for FPA150 in the first half of 
2018. 

We have a differentiated target discovery platform and comprehensive libraries of transmembrane and extracellular 
soluble proteins that we believe encompass substantially all the body’s medically important targets for protein 
therapeutics. We have identified approximately 700 of these proteins, which we refer to as the immunome, that we 
believe modulate immune cell interactions and may be important in understanding and treating cancer in patients 
using immuno-oncology therapeutics. Our target discovery platform and capabilities position us well to explore 
pathways in cancer and inflammation and their intersection in immuno-oncology, an area of oncology with 
significant therapeutic potential and the focus of our research activities. We are applying our biologics discovery 
platform, including cell-based screening, immunome-by-immunome biophysical interaction screening, in vivo 
screening, receptor-ligand matching technologies and bioinformatics, to our immuno-oncology research programs. 
We have identified several targets that we believe could be useful in immuno-oncology that we are actively 
validating. We are also conducting research to discover additional targets. We generate and preclinically test 
therapeutic proteins, including antibodies and fusion proteins containing or directed to the targets we discover and 
validate. We plan to continue to advance selected therapeutic candidates into clinical development.

1

Clinical Strategy

Our goal is to use our differentiated target discovery platform and libraries to maintain our leadership position in the 
discovery of innovative protein therapeutic targets and to build a leadership position in the development and 
commercialization of immuno-oncology therapeutics. The key elements of our strategy to achieve this goal are:

•

•

•

•

Focus on immuno-oncology protein therapeutics. Cancer therapeutics accounted for $113 billion in 
global sales in 2016, and immuno-oncology therapeutics represent a growing portion of these sales. 
However, there continues to be significant medical need for innovative and effective therapies to treat 
cancer. With the productivity of our discovery platform and the significant experience and expertise of 
our research, preclinical and clinical scientists in the field of immuno-oncology, we believe we are well 
positioned to discover new targets and develop effective, innovative protein therapeutics.

Continue to advance and expand our internal pipeline. Three of our product candidates, cabiralizumab, 
bemarituzumab and FPA150, are currently in clinical development, and others, including FPT155 are in 
preclinical or earlier development. We plan to focus our resources on the further development of these 
product candidates, discovering and developing new therapeutic candidates with our platform, and 
potentially in-licensing additional product rights from third-parties to expand our development pipeline.

Establish additional product and clinical collaborations to supplement our internal development 
capabilities and generate funding. From time to time, we expect to establish additional research and 
development collaborations. These collaborations will supplement our research, development, 
manufacturing, regulatory and commercialization capabilities, provide us with significant funding to 
advance our pipeline and validate our technology. 

Build a commercial enterprise by retaining rights for products in targeted specialty markets. We plan to 
build sales and marketing capabilities in selected specialty markets in the United States that we can 
adequately serve as we work toward becoming a focused commercial organization. We currently have 
global rights to all our product candidates, except that we granted Zai Lab an exclusive license to develop 
and commercialize bemarituzumab in China, Hong Kong, Macau and Taiwan, and granted BMS 
exclusive global rights to develop and commercialize cabiralizumab. Our cabiralizumab collaboration 
agreement with BMS provides us with an option to co-promote cabiralizumab in the United States.

Our Pipeline

The following table shows the stage of development of our most advanced product candidates:

Program 
Cabiralizumab*
(FPA008)
CSF-1R antibody

Bemarituzumab
(FPA144**)
FGFR2b antibody

FPA150
B7-H4 antibody

FPT155
CD80-Fc

TIM-3 antibody*

I-O antibody*

Indications

Lead
selection

IND-enabling 
activities

Phase 1

Phase 1b

Phase 2

Phase 3

Pancreatic cancer (combination with Opdivo® and chemo)

Multiple tumor settings (combination with Opdivo®)

ADVISE trial (combination with Opdivo®)

Pigmented villonodular synovitis (PVNS)

FIGHT Phase 1/3 trial (with chemo) in gastric/GEJ cancer

Bladder cancer

Multiple tumor settings

Multiple tumor settings

Multiple tumor settings

Multiple tumor settings

Novel I-O Biologics

Multiple tumor settings

2

Clinical Programs

Cabiralizumab

Cabiralizumab is an antibody that inhibits CSF1R. CSF1R is a cell surface protein that controls the survival and 
function of certain immune response cells called monocytes and macrophages. Monocytes and macrophages are 
elevated or activated in multiple disease settings. In cancer, macrophages suppress the immune system’s ability to 
kill cancer cells. In joint diseases, macrophages contribute to inflammation and, in diseases such as PVNS, can form 
tumor masses. Cabiralizumab blocks the activation and survival of these cell types. In many cancers, inhibition of 
CSF1R reduces the number of immunosuppressive tumor-associated macrophages, or TAMs, thereby facilitating an 
immune response against tumors. The staining images in Figure 1 below show the inhibitory effect cabiralizumab 
has on TAMs in a tumor model. We believe the combination of cabiralizumab with T cell checkpoint inhibitors, 
such as PD-1 inhibitors, or immune agonists may have synergistic therapeutic effects in treating cancer. 

Figure 1: Inhibition of Tumor-Associated Macrophages by Cabiralizumab

F4/80 Staining for Macrophages in the MC38 Tumor Model

3

Using our differentiated target discovery platform and libraries, we discovered a protein called interleukin-34, or IL-
34, that is a key regulator of monocyte and macrophage numbers and activity. Once we discovered IL-34, we were 
able to use our protein libraries and ligand-receptor matching technology to identify its receptor, CSF1R. This 
receptor is known to be expressed on the surface of monocytes and macrophages. Before our discovery of IL-34, 
CSF1R was thought to have only one ligand called CSF1. Both CSF1 and IL-34 bind to and activate CSF1R and 
therefore promote the survival and activity of monocytes and macrophages. Cabiralizumab blocks the binding of 
both CSF1 and IL-34 to CSF1R and thereby inhibits the activity and survival of these cells (Figure 2).

Figure 2: Cabiralizumab Mechanism of Action

Cabiralizumab in Immuno-Oncology

We believe that there is a strong rationale for combining cabiralizumab with checkpoint inhibitors to treat cancer, 
including that:

•

•

•

TAMs are immunosuppressive and act by inhibiting CD8 T cell responses while enhancing recruitment 
and differentiation of regulatory T cells, or Tregs;

TAMs often correlate with poor prognosis in cancer patients;

TAMs appear to be sensitive to CSF1R inhibition; and

• we believe that CSF1R inhibition in combination with checkpoint inhibitors (e.g., anti-PD1 or anti-

CTLA-4 antibodies) or immune agonists (e.g., anti-CD40 antibodies) may synergistically induce tumor 
regressions.

4

These points suggest that combining an anti-CSF1R antibody, such as cabiralizumab, with an anti-PD1 antibody, 
such as Opdivo, may benefit cancer patients. In preclinical studies, we observed cabiralizumab to be highly effective 
in blocking the growth of pancreatic tumors when combined with an anti-PD1 antibody and gemcitabine, as shown 
in Figure 3 below.

Figure 3: Tumor Weight Reduction of Cabiralizumab in Combination with Anti-PD1 Antibody and Gemcitabine

ORTHOTOPIC PANCREATIC
CANCER MODEL

i

t
h
g
e
W

r
o
m
u
T

)

M
E
S
±
g

n
a
e
m

(

2.0

1.5

1.0

0.5

0.0

p=0.0001

p=0.03

IgG

FPA008

FPA008 Anti-PD1

Combo

+ gemcitabine

5

 
 
 
Clinical Development of Cabiralizumab in Immuno-Oncology

We are currently conducting a Phase 1a/1b clinical trial to evaluate the safety, tolerability and preliminary efficacy 
of combining cabiralizumab with Opdivo as a potential treatment for a variety of cancers. We have completed 
enrollment in this trial and continue to treat patients still on study. In the Phase 1b portion of the trial we are 
evaluating the safety, tolerability and preliminary efficacy of cabiralizumab in combination with Opdivo in the 
following tumor settings:

•

•

•

•

•

•

•

non-small cell lung cancer, or NSCLC;

anti-PD-1 therapy resistant NSCLC (either de novo or acquired resistance);

squamous cell carcinoma of the head and neck;

pancreatic cancer;

renal cancer;

ovarian cancer; and

glioblastoma multiforme.

In parallel with advancing into the Phase 1b portion of the trial, we expanded the Phase 1a portion of the trial to 
enable us to continue to study cabiralizumab as monotherapy and as combination therapy with Opdivo in patients 
with certain tumor types beyond those addressed in the Phase 1b cohorts, including in patients whose tumors are 
refractory to PD-1 checkpoint inhibitors. 

In November 2017, we presented preliminary safety, tolerability and efficacy data from patients from the Phase 
1a/1b clinical trial at the Society for Immunotherapy of Cancer 32nd Annual Meeting, or the SITC presentation. As 
of the August 1, 2017 data cutoff for the SITC presentation, we had tested cabiralizumab as monotherapy in 
advanced solid tumors at escalating doses in 24 patients, in combination with Opdivo in advanced solid tumors at 
escalating doses of cabiralizumab in 10 patients, and in combination with Opdivo in advanced solid tumors in 
disease-specific cohorts at a dose of 4 mg/kg of cabiralizumab every two weeks in 195 patients. We observed a 
tolerable safety profile of cabiralizumab monotherapy and of cabiralizumab in combination with Opdivo. The most 
common treatment-related laboratory abnormalities were elevations in creatine kinase and serum liver enzymes 
without an associated elevation in bilirubin levels or other clinical sequelae. These treatment-related adverse 
abnormalities are believed to be secondary to cabiralizumab’s depletion of Kupffer cells and have been observed 
with other CSF1R-targeting agents. The most common treatment-related adverse events were: periorbital edema 
(20.8%), fatigue (29.2%), nausea (12.5%) and pruritus (8.3%). Grade 5 treatment-related adverse events in the trial 
occurred in three (1.3%) patients treated with a combination of cabiralizumab and Opdivo. The Grade 5 events were 
pneumonitis in a patient with thyroid cancer and respiratory distress and acute respiratory distress in two patients 
with lung cancer.

Among the other data, we observed preliminary evidence of a durable clinical benefit of the combination therapy in 
the cohort of patients with advanced pancreatic cancer. Based on radiographic assessments of anti-tumor activity in 
the 31 second- or later-line patients who had advanced pancreatic cancer, we observed, as of the August 1, 2017 data 
cutoff date:

•

•

•

five patients with durable clinical benefit (16%); 

four confirmed objective responses (13%); and

disease control for at least five to over nine months.

All four confirmed objective responses were in patients with microsatellite stable tumors who had received an 
average of three prior therapies. In addition, the responses were accompanied by steep declines in levels of the 
pancreatic tumor marker CA-19-9 over the baseline.

6

The data suggest that a combination therapy of cabiralizumab with Opdivo may benefit patients with pancreatic 
cancer, including those with microsatellite stable tumors, and support further study of cabiralizumab in combination 
with Opdivo in pancreatic cancer. 

Based on the clinical data we observed in the cohort of patients with pancreatic cancer in the Phase 1b portion of this 
trial, we enrolled 35 patients with second- or later-line pancreatic cancer in the expansion of the Phase 1a portion of 
our Phase 1a/1b clinical trial to further evaluate the combination of cabiralizumab and Opdivo in this patient 
population. We are collecting pre- and on-treatment tumor biopsy samples from these patients, and are conducting 
comprehensive biomarker analyses to evaluate potential biomarker signatures that may predict responsiveness to this 
therapeutic combination and to assess changes that occur in the tumor microenvironment following treatment.

Also based on the clinical data we presented at the SITC presentation, BMS opened and is currently enrolling 
patients in a randomized, multi-arm Phase 2 clinical trial to determine the efficacy of cabiralizumab in combination 
with Opdivo, with and without chemotherapy, as a treatment for patients with second-line pancreatic cancer 
(NCT03336216). BMS plans to enroll approximately 160 patients with pancreatic cancer in the study, who will be 
randomized to one of four study arms based on the patient’s prior therapy. In January 2018, the dosing of the first 
patient in the trial by BMS triggered a $25 million milestone payable to us pursuant to the license and collaboration 
agreement between the companies established in 2015.

Cabiralizumab in PVNS

PVNS is a rare neoplastic joint disease, characterized by a locally aggressive tumor of the synovium. It is 
characterized by local overexpression of CSF1, which recruits macrophages into the joints, forming a non-malignant 
tumor mass. It is associated with high morbidity, and there are no approved therapies for the condition. We believe 
that administering cabiralizumab to PVNS patients will reduce infiltration of monocytes and macrophages into 
affected joints of these patients and inhibit the activity and survival of the monocytes and macrophages that form the 
bulk of the tumor mass, resulting in tumor shrinkage, pain reduction and increased use of affected joints.

There are two primary forms of PVNS: localized and diffuse. In localized PVNS, the tumor involves the tendons 
that support the affected joint or occurs in just one area of the affected joint. Localized PVNS is often surgically 
resectable and typically responds well to surgical treatment. Diffuse PVNS is more widespread throughout an entire 
joint. Accordingly, diffuse PVNS tends to be more destructive, may not be resectable and is more difficult to treat 
than localized PVNS. 

Clinical Development of Cabiralizumab in PVNS

We are conducting a Phase 1/2 clinical trial of cabiralizumab monotherapy as a potential treatment for diffuse PVNS. 
During the Phase 2 portion of the trial, we are evaluating tumor response rate and duration and measures of pain and 
joint function in PVNS patients. We completed patient enrollment in the initially-planned 30-patient Phase 2 cohort 
in April 2017. 

In June 2017, we presented a poster at the 2017 American Society of Clinical Oncology, or ASCO, Annual Meeting 
with updated pharmacokinetics, or PK, pharmacodynamics, or PD, and safety data from 21 patients treated with 
cabiralizumab and efficacy data from 11 patients treated with cabiralizumab in our ongoing Phase 1/2 clinical trial.

Based on the data, we concluded that the PK and PD of cabiralizumab support dosing of up to 4 mg/kg administered 
every two weeks. We did not observe any dose-limiting toxicities of cabiralizumab at doses up to 4 mg/kg 
administered every two weeks. The most common treatment-related adverse events were periorbital and eyelid 
edema, rash and pruritis, which are all class effects for compounds targeting the CSF1R pathway.

7

We also observed clinical benefit in patients with diffuse PVNS in doses of cabiralizumab of up to 4mg/kg 
administered every two weeks. Based on radiographic assessments by RECIST 1.1 of anti-tumor activity of the 11 
patients treated with cabiralizumab at the 4mg/kg dose, we observed, as of the March 7, 2017 data cut-off date:

•

•

four confirmed radiographic responses and one unconfirmed radiographic response; and

improvements in median Ogilvie-Harris composite score of pain and function in both responders and 
non-responders.

In September 2017, we amended the study to enroll up to 30 additional patients with diffuse PVNS in the Phase 2 
portion of the trial to refine the dosing schedule and optimize the therapeutic index of cabiralizumab in PVNS. Data 
from these additional patients are intended to support the design of our planned pivotal trial of cabiralizumab in 
PVNS. We plan to decide in the second half of 2018 whether to advance cabiralizumab to a pivotal trial in diffuse 
PVNS patients based on the data we obtain from the new dosing schedule.

In January 2016, the U.S. Food and Drug Administration, or the FDA, granted cabiralizumab Orphan Drug 
Designation for the treatment of PVNS. Orphan Drug Designation is granted by the FDA to products that treat rare 
diseases, defined as those affecting fewer than 200,000 people in the United States. 

In December 2016, the European Commission, following an evaluation by the European Medicines Agency’s 
Committee for Orphan Medicinal Products, designated cabiralizumab as an orphan medicinal product for the 
treatment of PVNS. The European Commission grants orphan medicinal product designation to products that are 
intended for the diagnosis, prevention or treatment of a life-threatening or chronically debilitating condition 
affecting not more than five in 10,000 people in the European Union. 

Orphan Drug Designation in the United States and orphan medicinal product designation in the European Union 
each provide certain benefits and incentives in their respective jurisdictions, including a potential period of 
marketing exclusivity for the first marketing application if regulatory approval is received for the designated 
indication, potential tax credits for certain activities and waiver of certain administrative fees.

Bemarituzumab (FPA144)

Bemarituzumab is an antibody that inhibits FGFR2b that we are initially developing to treat a subset of gastric 
(stomach) and GEJ cancer patients whose tumors overexpress FGFR2b, as determined by an immunohistochemistry, 
or IHC, diagnostic test, or amplify the FGFR2 gene, as determined by a circulating tumor DNA, or ctDNA, blood-
based diagnostic test. This subset of patients with tumors that overexpress the FGFR2b protein or amplify the 
FGFR2 gene is associated with lower overall survival. We are working with third-parties specializing in companion 
diagnostic development to develop IHC and blood-based companion diagnostics to identify gastric and GEJ cancer 
patients who have FGFR2b overexpressing tumors or FGFR2 gene amplification and who would be most likely to 
benefit from treatment with bemarituzumab. 

We believe that bemarituzumab acts on tumor cells in two ways:

•

•

bemarituzumab binds to FGFR2b and blocks certain FGFs from binding to FGFR2b, preventing these 
FGFs from promoting the growth of the tumor cells; and 

once bemarituzumab binds to FGFR2b on the surface of the tumor cell, bemarituzumab recruits natural 
killer immune cells into the tumor microenvironment to kill the tumor cell in a process called antibody-
dependent cell-mediated cytotoxicity, or ADCC.

Clinical Development of Bemarituzumab 

We are conducting a Phase 1 clinical trial of bemarituzumab to evaluate the safety, PK and efficacy of 
bemarituzumab as monotherapy in patients with metastatic gastric and GEJ cancer and bladder cancer whose tumors 
overexpress the FGFR2b protein. We have closed enrollment in the four cohorts in the expansion portion of the 
Phase 1 trial in which we were evaluating bemarituzumab in patients with metastatic gastric and GEJ cancer. We 
continue to enroll and treat patients in the cohort of patients with bladder cancer.

8

In June 2017, we presented updated safety and efficacy data from 64 patients from the Phase 1 clinical trial in a 
clinical poster at the 2017 ASCO Annual Meeting, or the ASCO presentation. As of the March 20, 2017 data cut-off 
date for the ASCO presentation, we had tested bemarituzumab in advanced solid tumors at doses of up to 15 mg/kg 
given as monotherapy every two weeks, including in patients with gastric or GEJ cancer. We did not observe any 
dose-limiting toxicities or a maximum-tolerated dose. In addition, unlike small molecule FGF receptor kinase 
inhibitors, which block signaling through a broad number of FGF receptors and can lead to hyperphosphatemia, we 
did not observe any treatment-related hyperphosphatemia in patients treated with bemarituzumab. All treatment-
related adverse events were Grades 1, 2 or 3. All treatment-related ocular adverse events were Grades 1 or 2, and no 
retinal toxicity was reported. 

With respect to the patients with gastric or GEJ cancer, we observed preliminary anti-tumor activity with 
bemarituzumab monotherapy in late-line patients who had a median of three prior therapies and whose tumors 
overexpress the FGFR2b protein. Based on radiographic assessments by RECIST 1.1 of anti-tumor activity in the 21 
patients who had high FGFR2b+ overexpressing gastric or GEJ cancer, we observed, as of the March 20, 2017 data 
cut-off date:

•

•

•

•

four confirmed partial responses and one unconfirmed partial response;

an objective response rate, or ORR, of 19.0%;

a median duration of response of 15.4 weeks; and

a disease control rate, or DCR, at 6 weeks of 57.1%.

We designed our initial Phase 1 clinical trial testing bemarituzumab as monotherapy to evaluate the safety and 
tolerability of bemarituzumab as well as to gain early evidence of effectiveness, including by evaluating ORR, DCR 
and duration of response of patients with gastric or GEJ cancer that overexpresses FGFR2b. We believe that the 
ORR, DCR and duration of response and safety data that we have generated in our initial Phase 1 clinical trial 
support the evaluation of bemarituzumab in a registrational trial. Because patients with gastric or GEJ cancer that 
overexpresses FGFR2b have a worse prognosis as compared to those patients that do not overexpress FGFR2b, we 
believe that patients with FGFR2b-overexpressing disease progress more rapidly and that such patients are less 
likely to survive and become third- or even second-line patients. As a result, we believe testing bemarituzumab as a 
front-line treatment would increase the pool of patients that would be eligible to enroll in the trial and would result 
in faster enrollment and completion of a registrational trial than had we decided to test bemarituzumab as a second- 
or third-line treatment. In addition, because of the heterogeneity of advanced gastric and GEJ cancer, and because 
our preclinical data show additive efficacy against FGFR2b-overexpressing gastric cancer when adding 
bemarituzumab to chemotherapy, we believe that testing bemarituzumab in combination with chemotherapy may 
increase the extent and duration of response as compared to treatment with bemarituzumab alone. Moreover, we 
believe that bemarituzumab’s safety profile allows for the combination of bemarituzumab with chemotherapy while 
maintaining an acceptable safety profile. Based on the foregoing, we designed a global Phase 1/3 registrational trial 
to test bemarituzumab in combination with 5-fluorouracil (5-FU), leucovorin, and oxaliplatin, or mFOLFOX6, as 
front-line treatment of patients with gastric or GEJ cancer that overexpresses FGFR2b, or the FIGHT trial.

Because we had not yet clinically tested bemarituzumab in combination with mFOLFOX6, we included a Phase 1 
safety lead-in for the FIGHT trial. During this Phase 1 safety lead-in portion, we will evaluate the safety, tolerability, 
PK and pharmacodynamics of bemarituzumab in combination with mFOLFOX6 in patients with any type of 
gastrointestinal cancer to identify a recommended dose of bemarituzumab to use in the Phase 3 portion of the trial. 
In December 2017, we initiated dosing in the Phase 1 safety lead-in portion of our FIGHT trial. We expect to initiate 
the global randomized, controlled Phase 3 portion of the trial in mid-2018. 

9

We estimate that approximately 10% of patients with gastric or GEJ cancer have tumors that either 
have FGFR2 gene amplification or overexpress the FGFR2b protein. Accordingly, in the Phase 3 portion of the 
FIGHT trial, we will select for enrollment those patients whose tumors have FGFR2 gene amplification or FGFR2b 
protein overexpression. We plan to identify FGFR2 gene amplification using a ctDNA blood-based test, which will 
allow us to detect DNA shed from tumors that circulates in blood plasma outside of cells. We plan to identify 
FGFR2b overexpression using an IHC test, which will allow us to determine FGFR2b overexpression in tumor 
tissue samples. We are developing both tests in parallel with our clinical development of bemarituzumab in 
collaboration with third-party diagnostic development partners and plan to use both companion diagnostics 
concurrently to more effectively identify gastric and GEJ cancer patients whose tumors overexpress FGFR2b or 
have FGFR2 gene amplification. We plan to pursue regulatory approval of each companion diagnostic 
contemporaneously with regulatory approval of bemarituzumab.

Because the observed incidence of gastric and GEJ cancer is higher in Asian populations than in other populations, 
in December 2017, we entered into the China collaboration agreement with Zai Lab, pursuant to which we granted 
Zai Lab an exclusive license to develop and commercialize bemarituzumab in China, Hong Kong, Macau and 
Taiwan, and pursuant to which Zai Lab will conduct the Phase 3 portion of the FIGHT trial in China. We believe 
that our collaboration with Zai Lab will allow us to expedite the initiation of the Phase 3 portion of the FIGHT trial 
at clinical sites in China and will enhance our ability to enroll patients at clinical sites in China, which we believe 
will reduce the overall time to fully enroll the Phase 3 portion of the FIGHT trial. 

In addition, in July 2017, we initiated dosing in a Phase 1 clinical trial in Japan evaluating bemarituzumab as a 
monotherapy to treat patients with gastric or GEJ cancer. We expect to complete this trial in 2018. This trial is 
intended to enable the inclusion of Japanese patients in our FIGHT trial. 

Market Opportunity

Globally, gastric cancer is the fifth most common malignancy with the third highest mortality. In the United States, 
the prevalence of gastric cancer is approximately 95,700 patients, of which we believe approximately 9,570 have 
tumors that overexpress FGFR2b or are FGFR2 gene-amplified and are more likely to respond to bemarituzumab. 
Globally, the prevalence of gastric cancer is approximately 1.5 million patients, of which we believe approximately 
150,000 have tumors that overexpress FGFR2b and or are FGFR2 gene-amplified are more likely to respond to 
bemarituzumab. 

In June 2016, the FDA granted Orphan Drug Designation to bemarituzumab for the treatment of gastric cancer, 
including GEJ cancer, in patients whose tumors overexpress FGFR2b. We believe that our clinical development 
organization is well-suited to conduct a focused clinical development plan for FGFR2b-overexpressing or FGFR2 
gene-amplified gastric and GEJ cancer. 

Under our China collaboration agreement, we granted Zai Lab an exclusive license to develop bemarituzumab in 
China, Hong Kong, Macau and Taiwan. We plan to continue to seek strategic collaborators to develop and 
commercialize bemarituzumab in other territories. We plan to retain the right to commercialize or co-commercialize 
bemarituzumab in the United States.

FPA150

FPA150 is a CD8 T cell checkpoint inhibitor antibody that targets B7-H4. B7-H4 is a member of the B7 family of 
checkpoint inhibitors and shares significant homology with the other B7 family members, including PD-L1 and PD-
L2. B7-H4 is expressed in several human tumors, including breast, ovarian, endometrial, lung and pancreatic 
cancers, and its expression correlates with poor prognosis. We designed FPA150 to target tumor cells through two 
distinct mechanisms of action: (i) by blocking B7-H4 from sending an inhibitory signal to CD8 T cells, and (ii) by 
enhancing ADCC against B7-H4-expressing tumor cells.

In December 2017, we filed an investigational new drug application, or IND, to initiate a Phase 1a/1b clinical trial to 
evaluate the safety, tolerability and preliminary efficacy of FPA150 monotherapy as a potential therapy in patients 
with a variety of cancers. In January 2018, we received clearance from the FDA to proceed with the clinical 
development of FPA150. 

10

We plan to evaluate FPA150 in escalating doses in advanced solid tumors in the Phase 1a portion of our Phase 1a/1b 
clinical trial, which we expect to initiate in the first half of 2018. Because FPA150 is expected to have an 
immunomodulatory effect and our Phase 1 trial is the first-in-human evaluation of FPA150, the starting dose of the 
dose escalation portion of the trial is lower than we would have selected for a development candidate that does not 
have an immunomodulatory effect. We expect the Phase 1a dose-escalation portion of our trial will continue into 
2019. In the Phase 1b portion of the trial, we plan to evaluate FPA150 in various disease-specific cohorts, including 
in breast cancer, ovarian cancer, endometrial cancer and urothelial bladder cancer. We plan to develop an IHC-based 
assay in collaboration with a diagnostic development partner to select patients whose tumors overexpress B7H4 
during the Phase 1b portion of the trial.

FPT155

FPT155 is a soluble CD80-Fc fusion protein. CD80 is a member of the B7 family of checkpoint inhibitors that is 
involved in modulating T cell priming and activation. This program came from our in vivo screens, which 
demonstrated that a soluble form of CD80 had potent in vivo anti-tumor activity when compared with 500 other 
immunome proteins. FPT155 uses the binding interactions of soluble CD80 to (i) block CTLA-4 from competing for 
endogenous CD80, allowing CD28 signaling to prevail in T cell activation in the tumor microenvironment and (ii) 
directly engage CD28 to further enhance its co-stimulatory T-cell activation activity without inducing super 
agonism.

We are currently conducting IND-enabling activities for FPT155, with the goal of filing an IND or its foreign 
equivalent in the second half of 2018. 

Immuno-Oncology Drug Discovery and Research Programs

Overview

We are currently focusing our internal research efforts in the area of immuno-oncology. Cancers grow and spread 
because tumor cells have developed ways to evade elimination by the immune system. For example, cancer cells 
make proteins that apply the “brakes” to immune cells and prevent the immune cells from killing the tumor cells. 
One of the most exciting recent discoveries in cancer therapy has been the identification of ways to release these 
“brakes” and allow the immune cells to once again kill tumor cells. This approach has the potential to not only 
reduce tumor growth like traditional therapies, but also to potentially eliminate the cancer entirely in some patients. 
In addition to releasing the “brakes” on immune cells, other discoveries in immuno-oncology have focused on 
identifying ways to “press on the gas” to amplify the anti-tumor immune response. This second approach targets 
stimulatory pathways on immune cells. Agents that agonize stimulatory pathways can help immune cells overcome 
inhibitory signals in the tumor microenvironment, resulting in tumor cell killing. 

While checkpoint inhibitor therapies have been validated in the clinic with agents targeting the PD-1/PD-L1 and 
CTLA-4 pathways to release the “brakes,” a significant proportion of patients do not respond to these treatments. 
New targets for immuno-oncology are needed to address those patients who do not respond to or cannot tolerate 
traditional therapies or agents currently in development. We are applying all aspects of our differentiated discovery 
platform to identify protein partners for molecules known to be involved in the anti-tumor immune response. We 
believe we have identified promising new antibody targets and ligand traps and are actively researching and 
validating additional immuno-regulatory targets. 

11

Our Biologics Discovery Platform

We are focused on discovering and developing innovative protein therapeutics. Targets for protein therapeutics are 
proteins in the body that when inappropriately produced or altered can result in human diseases. Protein therapeutics 
can be designed to reverse these disease-causing mechanisms. There are thousands of proteins in the body that 
represent potential protein therapeutic targets or therapeutics themselves, but only a few are targeted by currently 
marketed protein drugs in immuno-oncology, such as PD-1, PD-L1, CTLA-4, IL-2, interferon alpha and CD3. 

Traditional ways to discover new targets for protein therapeutics have relied on a “trial-and-error” approach 
studying a single or a small number of proteins at a time. We have developed a platform to improve the traditionally 
difficult process of discovering new protein therapeutic targets. Our platform is based on two components:

•

•

proprietary libraries that we believe include the most comprehensive collections of fully functional human 
extracellular proteins that are abundant sources of medically-relevant novel targets for protein 
therapeutics; and

proprietary technologies and know-how for producing and testing thousands of proteins at a time to test in 
in vitro, in vivo and other assays to identify potential protein drugs and antibody candidates.

We believe our platform improves and accelerates the discovery of new drug targets and protein therapeutics 
because it can:

•

•

•

identify novel medically relevant protein targets and protein therapeutics that have little or no previously 
known biological function or are not in the public domain and cannot easily be discovered by other 
methods;

determine the best protein target among many alternatives for a particular disease by screening and 
comparing nearly all possible medically important targets simultaneously; and

identify new drug targets more quickly and efficiently than previously possible because it can produce 
and test thousands of proteins at a time rather than one or just a few at a time.

We have used our platform to identify dozens of targets validated in rodent models in several different disease areas, 
including in collaboration with our partners, and to build a growing pipeline of product candidates. We believe our 
platform is particularly well positioned to explore new pathways in immuno-oncology. 

Growing Database of Protein Function

We have tested each of the proteins in our libraries in numerous screens on different cell types, providing us with an 
extensive database of information regarding how each protein performs in different screens and whether it is specific 
to a given disease process or has a broader range of activities. The cumulative data from all our screens allows us to 
identify the most appropriate target for our product candidates.

12

Collaborations 

A part of our strategy is to establish collaborations with strategic partners. These collaborations supplement our 
development, manufacturing, regulatory and commercialization capabilities, provide us with significant funding to 
advance our pipeline and validate our technology. A summary of our key product, clinical and discovery 
collaborations is set forth below. For information regarding the financial terms of the following agreements, 
including amounts we have received through December 31, 2017, see “Management’s Discussion and Analysis of 
Financial Condition and Results of Operations – Financial Overview – Collaboration and License Revenue.”

Cabiralizumab Collaboration Agreement with BMS

In October 2015, we entered into the cabiralizumab collaboration agreement with BMS, pursuant to which we 
granted to BMS an exclusive, worldwide license to develop and commercialize certain CSF1R antibodies, including 
cabiralizumab, and all modifications, derivatives, fragments or variants of such antibodies, each of which we refer to 
as a licensed antibody. The cabiralizumab collaboration agreement superseded the clinical trial collaboration 
agreement that we entered into with BMS in November 2014. 

Under the terms of the cabiralizumab collaboration agreement, BMS is responsible, at its expense, for developing 
cabiralizumab under a development plan, subject to our option, at our own expense, to conduct certain future 
studies, including registration-enabling studies to support approval of cabiralizumab in PVNS and in combination 
with our proprietary internal or in-licensed compounds, including in oncology, each of which we refer to as a Five 
Prime independent development path. BMS will have the option, prior to our commencement of a clinical trial with 
respect to a Five Prime independent development path, to include any such clinical trial in the development plan, 
and BMS would thereafter bear the associated development costs and milestone payments to us with respect to 
BMS’s development of such Five Prime independent development path. If BMS elects to include in the development 
plan a clinical trial that would have been a Five Prime independent development path, BMS would reimburse us for 
our development expenses incurred since November 2015, the effective date of the cabiralizumab collaboration 
agreement, with respect to such Five Prime independent development path. 

If BMS does not add a Five Prime independent development path to the development plan before the review of any 
efficacy data from the first Phase 3 or registration-enabling clinical trial in such Five Prime independent 
development path, and such Five Prime independent development path indication achieves regulatory approval in 
the United States or marketing approval in the European Union or Japan, then BMS will reimburse us an amount 
equal to 125% of our development expenses with respect to such Five Prime independent development path.

We continue to conduct the current Phase 1a/1b clinical trial to evaluate the safety, tolerability and preliminary 
efficacy of combining Opdivo with cabiralizumab in multiple tumor types. BMS bears all costs and expenses 
relating to this trial, including manufacturing costs for the supply of cabiralizumab, except that we are responsible 
for our own internal costs, including internal personnel costs. 

BMS is responsible for manufacturing and commercialization of cabiralizumab, and we retain rights to a minority 
co-promotion option in the United States. 

Unless earlier terminated by either party, the cabiralizumab collaboration agreement will expire on a licensed 
product-by-licensed product and country-by-country basis upon the expiration of BMS’s payment obligations with 
respect to each licensed product under the agreement. BMS may terminate the agreement in its entirety or on a 
region-by-region basis at any time with advance written notice. BMS may also terminate the agreement in its 
entirety (or on a licensed product-by-licensed product basis) upon written notice based on certain safety reasons. 
Either party may terminate the agreement in its entirety with written notice for the other party’s material breach if 
such party fails to cure the breach. We may terminate the agreement in its entirety with written notice for BMS’s 
material breach of its diligence obligations with respect to development and obtaining marketing approval, and may 
terminate the agreement on a region-by-region basis for BMS’s breach of its diligence obligations with respect to 
timely commercialization of a licensed product in a region following marketing approval. Either party also may 
terminate the agreement in its entirety upon certain insolvency events involving the other party.

13

Zai Lab China License and Collaboration Agreement

In December 2017, we entered into the China collaboration agreement with Zai Lab, pursuant to which we granted 
Zai Lab an exclusive license to develop and commercialize bemarituzumab, and all fragments, conjugates, 
derivatives and modifications thereof, or the licensed antibody, in China, Hong Kong, Macau, and Taiwan, each a 
region, and collectively, the territory. 

Under the terms of the China collaboration agreement, Zai Lab will be responsible, at its expense, for (i) developing 
and commercializing products containing the licensed antibody, each, a licensed product, under a territory 
development plan and (ii) performing certain development activities to support our global development and 
registration of licensed products, including the Phase 3 portion of the FIGHT trial, in the territory, under a global 
development plan. 

Unless earlier terminated by either party, the China collaboration agreement will expire on a licensed product-by-
licensed product and region-by-region basis upon the expiration of Zai Lab’s payment obligations with respect to 
each licensed product under the agreement. Zai Lab may terminate the agreement in its entirety at any time with 
advance written notice. Either party may terminate the agreement in its entirety with written notice for the other 
party’s material breach if such party fails to cure the breach. We may terminate the agreement in its entirety with 
written notice for Zai Lab’s material breach of its diligence obligations with respect to development and obtaining 
marketing approval, and may terminate the agreement on a region-by-region basis for Zai Lab’s breach of its 
diligence obligations with respect to timely commercialization of a licensed product in a region following marketing 
approval. We may terminate the agreement in its entirety if Zai Lab or its affiliates or sublicensees commences a 
legal action challenging the validity, enforceability or scope of any of our patents in the territory. Either party also 
may terminate the agreement in its entirety upon certain insolvency events involving the other party.

BMS Immuno-oncology Research Collaboration 

In March 2014, we entered into a research collaboration and license agreement, or the immuno-oncology research 
collaboration, with BMS pursuant to which we and BMS are collaborating to carry out a research program to 
(i) discover novel interacting proteins in two undisclosed immune checkpoint pathways using our target discovery 
platform, (ii) further the understanding of target biology with respect to targets in these checkpoint pathways, and 
(iii) discover and pre-clinically develop compounds suitable for development for human therapeutic uses against 
targets in these checkpoint pathways. Based on data arising from our initial screens, in January 2016, we amended 
the immuno-oncology research collaboration to add an additional undisclosed checkpoint pathway to the research 
program, for a total of three immune checkpoint pathways.

In December 2017, we earned a $5 million milestone payment under the discovery collaboration agreement in 
connection with BMS’s filing of an IND for its fully human monoclonal antibody targeting T-cell immunoglobulin 
and mucin domain-3, or TIM-3, an immune checkpoint receptor that is known to limit the duration and magnitude of 
T-cell responses. This antibody is BMS’s first clinical candidate arising from the collaboration.

The initial three-year research term of the immuno-oncology research collaboration ended in March 2017 and 
BMS’s first extension of the research term will end in March 2018. BMS exercised its option to extend the research 
term for an additional year to March 2019. BMS will provide us with funding for the additional research we will 
conduct during the extended term.

Unless earlier terminated by either party, the immuno-oncology research collaboration will expire on a product-by-
product and country-by-country basis upon the expiration of all of BMS’s payment obligations under the immuno-
oncology research collaboration agreement. BMS may terminate the immuno-oncology research collaboration 
agreement in its entirety or on a collaboration target-by-collaboration target basis at any time with advance written 
notice. Either party may terminate the immuno-oncology research collaboration agreement in its entirety or on a 
collaboration target-by-collaboration target basis with written notice for the other party’s material breach if such 
other party fails to timely cure the breach. Either party also may terminate the immuno-oncology research 
collaboration agreement in its entirety upon certain insolvency events involving the other party. 

14

GSK Muscle Diseases Collaboration 

In July 2010, we entered into a research collaboration and license agreement, or the muscle diseases collaboration, 
with Glaxo Group Limited, or GSK, to identify potential drug targets and drug candidates to treat skeletal muscle 
diseases. We conducted three customized cell-based screens and one in vivo screen of our protein libraries under the 
muscle diseases collaboration. The research term under this collaboration ended in May 2014. GSK has exercised its 
option under the muscle diseases collaboration to obtain an exclusive, worldwide license to one undisclosed muscle 
disease target we identified using our proprietary discovery platform. 

The muscle diseases collaboration agreement will terminate upon the expiration of the royalty terms of any products 
that incorporate or target the protein exclusively licensed under the collaboration. In addition, GSK may terminate 
the agreement at any time with advance written notice, and either party may terminate the agreement with written 
notice for the other party’s material breach if such party fails to cure the breach or upon certain insolvency events. 

GSK Respiratory Diseases Collaboration 

In April 2012, we entered into a research collaboration and license agreement, or the respiratory diseases 
collaboration, with GSK to identify new therapeutic approaches to treat refractory asthma and chronic obstructive 
pulmonary disease, or COPD, function, with a particular focus on identifying novel protein therapeutics and 
antibody targets. We conducted six customized cell-based screens of our protein libraries under the collaboration. 
The research term for this collaboration ended in July 2016. 

GSK has exercised options under the respiratory diseases collaboration to obtain an exclusive, worldwide license to 
two undisclosed respiratory disease targets we identified using our proprietary discovery platform. GSK continues to 
have the right for limited periods of time to evaluate a limited number of proteins we identified under the respiratory 
diseases collaboration and obtain an exclusive worldwide license to develop and commercialize products that 
incorporate or target such proteins. 

The respiratory diseases collaboration agreement will terminate upon the expiration of the royalty terms of any 
products that incorporate or target a protein exclusively licensed under the collaboration. In addition, GSK may 
terminate the agreement at any time with advance written notice, and either party may terminate the agreement with 
written notice for the other party’s material breach if such party fails to cure the breach or immediately in the case of 
failure to comply with certain anti-bribery and anti-corruption policies or upon certain insolvency events. 

UCB Fibrosis and CNS Collaboration 

In March 2013, we entered into a research collaboration and license agreement with UCB, referred to as the fibrosis 
and CNS collaboration, to identify innovative biologics targets and therapeutics in the areas of fibrosis-related 
immunologic diseases and central nervous system, or CNS, disorders. We conducted five customized cell-based and 
in vivo screens of our protein libraries under the fibrosis and CNS collaboration. We completed our initial research 
activities under the fibrosis and CNS collaboration in March 2016. Following the completion of the research 
activities, UCB has up to a two-year evaluation period during which we may be obligated to perform additional 
services at UCB’s request. 

In the course of screening our protein libraries in the collaboration we discovered proteins that may be potential drug 
targets or drug candidates for fibrosis-related immunologic diseases. Under the collaboration, UCB has the right for 
limited periods of time to evaluate proteins identified in the screens we conducted and obtain an exclusive 
worldwide license to develop and commercialize products that incorporate or target the protein. If UCB elects to 
obtain an exclusive license to a protein it has evaluated, UCB would have sole responsibility for the further 
development and commercialization of products that incorporate or target the protein, at UCB’s cost and expense. 

The collaboration agreement will terminate upon the expiration of the royalty terms of any products that incorporate 
or target a protein exclusively licensed under the collaboration. In addition, UCB may terminate the agreement at 
any time with advance written notice, and either party may terminate the agreement with written notice for the other 
party’s material breach if such party fails to cure the breach or upon certain insolvency events. 

15

License Agreements 

License Agreement with Galaxy 

In December 2011, we entered into a license agreement with Galaxy Biotech LLC, or Galaxy, pursuant to which 
Galaxy granted us an exclusive worldwide license to develop and commercialize FGFR2b antibodies, including 
bemarituzumab. Under the license agreement, we are obligated to use commercially reasonable efforts to develop 
and commercialize at least one licensed product in at least one tumor indication. 

In May 2016, we amended the license agreement to revise certain milestone definitions, reduce certain milestone 
payments and add certain development-related milestone payments that were triggered by dosing of certain patients 
in the current Phase 1 clinical trial of bemarituzumab, which milestones were deemed achieved as of December 31, 
2016. In May 2017, we further amended the license agreement to align the net sales definition under the agreement 
to the net sales definition under any sublicense we may grant under the agreement and to amend the termination 
provisions to allow for a direct license between Galaxy and any sublicensee upon termination of the agreement.

Our license agreement with Galaxy will remain in effect until the expiration of our royalty obligations in all 
countries. For each licensed product, we are obligated to pay Galaxy royalties on net sales of such product on a 
country-by-country basis for the longer of the life of the licensed patents covering such licensed product in such 
country or 10 years after the first commercial sale of such licensed product in such country. We cannot determine 
the date on which our royalty payment obligations to Galaxy would expire because no commercial sales of 
bemarituzumab have occurred and the last-to-expire relevant patent covering bemarituzumab in a given country may 
change in the future. Galaxy currently has issued patents, which we have licensed, covering bemarituzumab in the 
United States, Europe, China, Japan and other countries that expire in 2029. Further patents may issue from pending 
patent applications in these and other countries, and these patents would expire in 2029. These patent expiration 
dates do not reflect any patent term adjustments or extensions that may be available. 

We may terminate the license agreement for convenience in its entirety or on a country-by-country basis upon prior 
written notice to Galaxy. Either party may terminate the license agreement in its entirety or with respect to certain 
countries after the first commercial sale of a licensed product in certain circumstances in the event of an uncured 
material breach by the other party. Either party may terminate the license agreement in the event of the other party’s 
filing or institution of bankruptcy, reorganization, liquidation or receivership proceedings or upon an assignment of 
a substantial portion of its assets for the benefit of creditors. Galaxy may terminate the license agreement if we or 
any of our affiliates challenge the validity or enforceability of any patent licensed to us by Galaxy under the license 
agreement or if we aid or assist any affiliate or third-party in such a challenge other than as required by law. 

Non-Exclusive License with BioWa-Lonza 

In February 2012, we entered into a license agreement with BioWa, Inc. and Lonza Sales AG, or BioWa-Lonza, 
pursuant to which BioWa-Lonza granted us a non-exclusive license to use their Potelligent® CHOK1SV technology, 
including the CHOK1SV cell line, and a non-exclusive license to related know-how and patents. This license is 
necessary to produce our bemarituzumab antibody. 

We are obligated to pay BioWa-Lonza aggregate milestone payments of up to $25.4 million for development, 
regulatory and commercialization milestones achieved in our bemarituzumab antibody program. We are also 
obligated to pay BioWa-Lonza tiered royalties on net sales of bemarituzumab up to mid-single digit percentages of 
the proceeds of such sales. 

Our license agreement with BioWa-Lonza will remain in effect until the expiration of our royalty obligations. For 
each licensed product, we are obligated to pay BioWa-Lonza royalties on net sales of such licensed product on a 
country-by-country basis for the longer of the life of the licensed patents covering such licensed product in such 
country or 10 years after the first commercial sale of such licensed product in a major market country, which 
includes the United States. However, because we believe the last-to-expire patents currently licensed to us under the 
license agreement would expire in less than 10 years, we believe the date on which our royalty payment obligations 
to BioWa-Lonza would expire in any country would be 10 years after the first commercial sale of such product in a 
major market country. 

16

We may terminate the license agreement for convenience subject to our continuing obligation to pay royalties. 
BioWa-Lonza may terminate the license agreement in the event of our uncured material breach, if we oppose or 
dispute the validity of patents licensed to us under the license agreement or if we are declared insolvent, make an 
assignment for the benefit of creditors, are the subject of bankruptcy proceedings or have a receiver or trustee 
appointed for substantially all of our property. 

Intellectual Property 

Our intellectual property is critical to our business and we strive to protect it, including by obtaining and maintaining 
patent protection in the United States and internationally for our product candidates and other biological discoveries 
relating to new targets, pathways and relevant inventions and technologies that are important to our business. For 
our product candidates, we generally initially pursue patent protection covering both compositions of matter and 
methods of use. 

Throughout the development of our product candidates, we seek to identify additional means of obtaining patent 
protection that would potentially enhance commercial success, including through additional methods of use, 
combination therapy, biomarker and companion diagnostic related claims. We also rely on trade secrets relating to 
our discovery platform and product candidates and seek to protect and maintain the confidentiality of proprietary 
information to protect aspects of our business that are not amenable to, or that we do not consider appropriate for, 
patent protection. 

Our success will also depend significantly on our ability to obtain rights to intellectual property held by third-parties 
that may be necessary or useful to our business, including for the discovery, development and commercialization of 
our product candidates. We generally obtain rights to third-party intellectual property through exclusive or non-
exclusive licenses. For example, we entered into a non-exclusive license with BioWa-Lonza to use their Potelligent® 
CHOK1SV technology, which is necessary to produce our bemarituzumab antibody. If we are not able to obtain 
rights to intellectual property held by third-parties that are necessary or useful to our business, our business could be 
harmed, possibly materially. 

The patent positions of biotechnology companies like ours are generally uncertain and involve complex legal, 
scientific and factual questions. In addition, the coverage claimed in a patent application can be significantly limited 
before the patent is issued, and its scope can be reinterpreted after issuance. Consequently, we may not obtain or 
maintain adequate patent protection for any of our product candidates. We cannot predict whether the patent 
applications we are currently pursuing will issue as patents in any particular jurisdiction or whether the claims of 
any issued patents will provide sufficient proprietary protection from competitors. Any patents that we hold may be 
challenged, circumvented or invalidated by third-parties. For a more comprehensive discussion of the risks related to 
our intellectual property, please see “Risk Factors—Risks Related to Our Intellectual Property.” 

The patent portfolios for our most advanced programs are summarized below: 

Cabiralizumab 

Our cabiralizumab patent portfolio includes patents and patent applications wholly owned by us as well as patents 
jointly owned with BMS. Our patent portfolio includes issued U.S. and foreign patents as well as pending U.S. and 
foreign patent applications covering compositions of matter, methods of use, biomarkers and combination therapies 
relating to cabiralizumab. The issued U.S. patents and issued foreign patents covering the composition of matter and 
methods of use expire in 2031. Patents that may issue from the pending U.S. and foreign applications would expire 
between 2031 and 2038. 

17

Bemarituzumab

Our patent portfolio for bemarituzumab includes patents and patent applications we exclusively licensed from 
Galaxy, as well as pending U.S. and foreign patent applications wholly owned by us. The patent portfolio, covering 
compositions of matter, methods of use, companion diagnostic and combination therapy relating to bemarituzumab, 
includes issued U.S. and foreign patents as well as pending U.S. and foreign patent applications. The issued U.S. 
patents expire between 2029 and 2030. The issued foreign patents expire in 2029. Patents that may issue from these 
pending U.S. and foreign applications would expire between 2029 and 2038. 

FPA150

Our patent portfolio for FPA150 includes provisional U.S. patent applications wholly owned by us. Those 
provisional applications cover various aspects of the FPA150 program. U.S. and foreign patent applications claiming 
priority to those provisional applications, if filed and issued, would expire in 2038.

Manufacturing 

We have process development and small-scale, non-clinical manufacturing capabilities. We generally perform cell 
line and process development for our product candidates and manufacture quantities of our product candidates 
necessary to conduct preclinical studies of our investigational product candidates. We do not have and we do not 
currently plan to acquire or develop the facilities or capabilities to manufacture bulk drug substance or filled drug 
product for use in human clinical trials or commercialization. We rely on third-party manufacturers to produce bulk 
drug substance required for our clinical trials and expect to continue to rely on third-parties to manufacture clinical 
trial drug supplies for the foreseeable future. BMS has the exclusive right to manufacture cabiralizumab drug 
substance and filled drug product. BMS will supply us with cabiralizumab, at its cost and expense, for our use in the 
conduct of the current trial and our Phase 2 clinical trial of cabiralizumab in patients with PVNS and will supply us 
with cabiralizumab for the conduct of our independent cabiralizumab development activities in exchange for a pre-
negotiated service fee. We also contract with additional third-parties for the filling, labeling, packaging, storage and 
distribution of investigational drug products. We have personnel with significant technical, manufacturing, 
analytical, quality and project management experience to oversee our third-party manufacturers and to manage 
manufacturing and quality data and information for regulatory compliance purposes. 

We must manufacture drug product for clinical trial use in compliance with current Good Manufacturing Practices, 
or cGMP. The cGMP regulations include requirements relating to organization of personnel, buildings and facilities, 
equipment, control of components and drug product containers and closures, production and process controls, 
packaging and labeling controls, holding and distribution, laboratory controls, records and reports, and returned or 
salvaged products. The manufacturing facilities for our products must meet cGMP requirements and FDA 
satisfaction before any product is approved. Our third-party manufacturers are also subject to periodic inspections of 
facilities by the FDA and other authorities, including procedures and operations used in the testing and manufacture 
of our products to assess our compliance with applicable regulations. Failure to comply with statutory and regulatory 
requirements subjects a manufacturer to possible legal or regulatory action, including warning letters, the seizure or 
recall of products, injunctions, consent decrees placing significant restrictions on or suspending manufacturing 
operations and civil and criminal penalties. These actions could have a material impact on the availability of our 
products. Contract manufacturers often encounter difficulties involving production yields, quality control and 
quality assurance, as well as shortages of qualified personnel. 

Commercialization 

We have not yet established sales, marketing or product distribution operations. We generally expect to retain some 
commercial rights in the United States for our product candidates in specialty markets. Pursuant to our 
cabiralizumab collaboration agreement, we have a co-promotion right in the United States which, if we exercise, 
will allow us to field a minority percentage of the total United States sales force promotional effort. If we exercise 
our option to co-promote cabiralizumab in the United States prior to submission of a biological license application, 
or BLA, we expect to commence commercialization activities by building a focused sales and marketing 
organization in the United States. We believe that such an organization will be able to address the community of 
oncologists who are the key specialists in treating the patient populations for which cabiralizumab is being 
developed. 

18

Competition 

The biotechnology and pharmaceutical industries are characterized by continuing technological advancement and 
significant competition. While we believe that our product candidates, technology, knowledge, experience and 
scientific resources provide us with competitive advantages, we face competition from major pharmaceutical and 
biotechnology companies, academic institutions, governmental agencies and public and private research institutions, 
among others. Any product candidates that we successfully develop and commercialize will compete with existing 
therapies and new therapies that may become available in the future. Key product features that would affect our 
ability to effectively compete with other therapeutics include the efficacy, safety and convenience of our products 
and the ease of use and effectiveness of any companion diagnostics. The level of generic competition and the 
availability of reimbursement from government and other third-party payors will also significantly affect the pricing 
and competitiveness of our products. Our competitors also may obtain FDA or other regulatory approval for their 
products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a 
strong market position before we are able to enter the market. 

Many of the companies against which we may compete have significantly greater financial resources and expertise 
in research and development, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory 
approvals and marketing approved products than we do. Smaller or early-stage companies may also prove to be 
significant competitors, particularly through collaborative arrangements with large and established companies. 
These competitors also compete with us in recruiting and retaining qualified scientific and management personnel 
and establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies 
complementary to, or necessary for, our programs. 

Government Regulation and Product Approval 

In the United States, the FDA regulates protein therapeutics like cabiralizumab, bemarituzumab, FPA150 and our 
other product candidates as biological drug products, or biologics, under the Federal Food, Drug, and Cosmetic Act, 
the Public Health Service Act and related regulations. Biologics are also subject to other federal, state and local 
statutes and regulations. Failure to comply with the applicable United States regulatory requirements at any time 
during the product development process, approval process or after approval may subject an applicant to 
administrative or judicial actions. These actions could include the suspension or termination of clinical trials by the 
FDA or an Institutional Review Board, or IRB, the FDA’s refusal to approve pending applications or supplements, 
revocation of a biologics license, warning letters, product recalls, product seizures, total or partial suspension of 
production or distribution, import detention, injunctions, civil penalties or criminal prosecution. Any administrative 
or judicial action could have a material adverse effect on us. 

The FDA and comparable regulatory agencies in state and local jurisdictions and in foreign countries impose 
substantial requirements upon the clinical development, manufacture and marketing of biologics. These agencies 
and other federal, state and local entities regulate research and development activities and the testing, manufacture, 
quality control, safety, effectiveness, purity, potency, labeling, storage, distribution, record keeping and reporting, 
approval, import and export, advertising and promotion and post-market surveillance of our products. 

The FDA’s policies may change and additional government regulations may be enacted that could prevent or delay 
regulatory approval of any future product candidates or approval of product or manufacturing changes, new disease 
indications, or label changes. We cannot predict the likelihood, nature or extent of adverse governmental regulation 
that might arise from future legislative or administrative action, either in the United States or abroad. 

Biologics Product Development  

The process required by the FDA before biologics may be marketed in the United States generally involves the 
following: 

•

•

nonclinical laboratory and animal tests; 

submission of an IND application, which must become effective before clinical trials may begin; 

19

•

•

•

adequate and well-controlled human clinical trials to establish the safety, purity and potency of the 
proposed biologic for its intended use or uses; 

pre-approval inspection of manufacturing facilities and clinical trial sites; and 

FDA approval of a BLA, which must occur before a biologic can be marketed or sold. 

The testing and approval process requires substantial time and financial resources, and we cannot be certain that any 
new approvals for our product candidates will be granted on a timely basis, if at all. 

Before testing any compound in human subjects, a company must develop extensive preclinical data. Preclinical 
testing generally includes laboratory evaluation of product chemistry and formulation as well as toxicological and 
pharmacological studies in several animal species to assess the quality and safety of the product. Animal studies 
must be performed in compliance with the FDA’s Good Laboratory Practice, or GLP, regulations and the United 
States Department of Agriculture’s Animal Welfare Act and related regulations. 

Prior to commencing the first clinical trial in humans, an initial IND application must be submitted to the FDA. A 
company must submit preclinical testing results to the FDA as part of the IND, and the FDA must evaluate whether 
there is an adequate basis for testing the drug in humans. The IND application automatically becomes effective 30 
days after receipt by the FDA unless the FDA within the 30-day time period raises concerns or questions about the 
conduct of the clinical trial and places the trial on clinical hold. In such case, the IND application sponsor must 
resolve any outstanding concerns with the FDA before the clinical trial may begin. A separate submission to the 
existing IND application or a new IND submission must be made for each successive clinical trial to be conducted 
during product development. Further, an independent IRB for each site proposing to conduct the clinical trial must 
review and approve the plan for any clinical trial before it commences at that site. Informed consent must also be 
obtained from each study subject. Regulatory authorities, an IRB, a data safety monitoring board or the study 
sponsor may suspend or terminate a clinical trial at any time on various grounds, including a finding that the 
participants are being exposed to an unacceptable health risk. 

A clinical trial sponsor is required to submit to the National Institutes of Health, or NIH, for public posting on NIH’s 
clinical trial website details about certain active clinical trials and clinical trial results. For purposes of BLA 
approval, human clinical trials are typically conducted in the following phases, which may overlap: 

•

•

•

Phase 1 — the biologic is initially given to healthy human subjects or patients and tested for safety, 
dosage tolerance, reactivity, absorption, metabolism, distribution and excretion. These trials may also 
provide early evidence of effectiveness. During Phase 1 clinical trials, sufficient information about the 
investigational product’s effects may be obtained to permit the design of well-controlled and scientifically 
valid Phase 2 clinical trials. 

Phase 2 — clinical trials are conducted in a limited number of patients in the target population to identify 
possible adverse effects and safety risks, to determine the efficacy of the product for specific targeted 
diseases and to determine dosage tolerance and optimal dosage. Multiple Phase 2 clinical trials may be 
conducted by the sponsor to obtain information prior to beginning larger and more expensive Phase 3 
clinical trials. 

Phase 3 — when Phase 2 evaluations demonstrate that a dosage range of the product appears effective 
and has an acceptable safety profile and provide sufficient information for the design of Phase 3 clinical 
trials, Phase 3 clinical trials are undertaken to provide statistically significant evidence of clinical efficacy 
and to further test for safety in an expanded patient population at multiple clinical trial sites. Phase 3 
clinical trials are performed after preliminary evidence suggesting effectiveness of the drug has been 
obtained, and are intended to further evaluate dosage, effectiveness and safety, to establish the overall 
benefit-risk relationship of the investigational drug, and to provide an adequate basis for product approval 
by the FDA. 

All of these trials must be conducted in accordance with Good Clinical Practice, or GCP, requirements in order for 
the data to be considered reliable for regulatory purposes. 

20

The Biologic License Application Approval Process 

In order to obtain approval to market a biologic in the United States, a BLA must be submitted to the FDA that 
provides data establishing to the FDA’s satisfaction the safety and effectiveness of the investigational product for 
the proposed indication. Each BLA submission requires a substantial user fee payment unless a waiver or exemption 
applies. The application includes all relevant data available from pertinent nonclinical studies and clinical trials, 
including negative or ambiguous results as well as positive findings, together with detailed information relating to 
the product’s chemistry, manufacturing, controls and proposed labeling, among other things. Data can come from 
company-sponsored clinical trials intended to test the safety and effectiveness of a use of a product and from a 
number of alternative sources, including studies initiated by investigators. 

The FDA will initially review a BLA for completeness before it accepts it for filing. Under the FDA’s procedures, 
the agency has 60 days from its receipt of a BLA, or the filing period, to determine whether the application will be 
accepted for filing based on the agency’s threshold determination that the application is sufficiently complete to 
permit substantive review. After the BLA submission is accepted for filing, the FDA reviews the BLA to determine, 
among other things, whether the proposed product is safe, pure and potent, which includes determining whether it is 
effective for its intended use, and whether the product is being manufactured in accordance with cGMP, and to 
assure and preserve the product’s identity, strength, quality, potency and purity. The FDA may refer applications for 
novel products or products that present difficult questions of safety or efficacy to an advisory committee, typically a 
panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the 
application should be approved and, if so, under what conditions. The FDA is not bound by the recommendations of 
an advisory committee, but it considers such recommendations carefully when making decisions. 

During the approval process, the FDA also will determine whether a Risk Evaluation and Mitigation Strategy, or 
REMS, is necessary to assure that the benefits of the biologic outweigh its risks. A REMS may include various 
elements depending on what the FDA considers necessary for the safe use of the drug. These elements range from a 
medication guide or patient package insert to training and certification requirements for prescribers and/or 
pharmacies to safe use conditions that must be in place before the drug is dispensed. If the FDA concludes that a 
REMS is needed, the BLA sponsor must submit a proposed REMS or the FDA will not approve the BLA. 

The FDA’s standard review time for a BLA for a new molecular entity is 10 months from the end of the 60-day 
filing period. Based on pivotal clinical trial results submitted in a BLA, at the discretion of the FDA or upon the 
request of an applicant, the FDA may grant a priority review designation to a product, which sets the target date for 
FDA action on the application at six months from the end of the filing period. Priority review is given for a product 
that treats a serious condition and, if approved, would provide a significant improvement in safety or effectiveness 
compared to marketed products or offer a therapy where no satisfactory alternative therapy exists. Priority review 
designation does not change the scientific or medical standard for approval or the quality of evidence necessary to 
support approval. 

After the FDA completes its review of a BLA, it will either communicate to the sponsor that it will approve the 
product, or issue a complete response letter to communicate that it will not approve the BLA in its current form and 
to inform the sponsor of changes that the sponsor must make or additional clinical, nonclinical or manufacturing 
data that must be received before the FDA can approve the application, with no implication regarding the ultimate 
approvability of the application. If a complete response letter is issued, the sponsor may either resubmit the BLA, 
addressing all of the deficiencies identified in the letter, or withdraw the application. Resubmitting a BLA in 
response to a complete response letter can add additional time to the approval process for a product. 

21

Before approving a BLA, the FDA will inspect the facilities at which the product is manufactured. The FDA will not 
approve the product unless it determines that the manufacturing processes and facilities are in compliance with 
cGMP requirements and are adequate to assure consistent production of the product within required specifications. 
Additionally, before approving a BLA, the FDA may inspect one or more clinical sites to assure compliance with 
GCP. If the FDA determines the application, manufacturing process or manufacturing facilities are not acceptable, it 
typically will outline the deficiencies and often will request additional testing or information. This may significantly 
delay further review of the application. If the FDA finds that a clinical site did not conduct the clinical trial in 
accordance with GCP, the FDA may determine the data generated by the clinical site should be excluded from the 
primary efficacy analyses provided in the BLA. Additionally, notwithstanding the submission of any requested 
additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for 
approval. 

The testing and approval process for a biologic requires substantial time, effort and financial resources and this 
process may take several years to complete. Data obtained from clinical activities are not always conclusive and 
may be susceptible to varying interpretations, which could delay, limit or prevent regulatory approval. The FDA 
may not grant approval on a timely basis or at all. We may encounter difficulties or unanticipated costs in our efforts 
to secure necessary governmental approvals, which could delay or preclude us from marketing our products. 

The FDA may require, or companies may pursue, additional clinical trials after a product is approved. These so-
called Phase 4 clinical trials may be made a condition to be satisfied for continuing product approval. The results of 
Phase 4 clinical trials can confirm the effectiveness of a product candidate and can provide important safety 
information. Conversely, the results of Phase 4 clinical trials can raise new safety or effectiveness issues that were 
not apparent during the original review of the product, which may result in product restrictions or even withdrawal 
of product approval. The FDA has express statutory authority to require sponsors to conduct post marketing studies 
or clinical trials to specifically address safety issues identified by the agency. If any of our products are subject to 
post-marketing requirements and commitments, there may be resource and financial implications for our business.

Even if a product candidate receives regulatory approval, the approval will be limited to specific disease states, 
patient populations and/or dosages, or might contain significant limitations on use in the form of warnings, 
precautions or contraindications, or in the form of onerous risk management plans, restrictions on distribution, or 
post-marketing study or clinical trial requirements. Further, even after regulatory approval is obtained, later 
discovery of previously unknown problems with a product may result in restrictions on the product, requirements to 
conduct additional studies or trials, or even complete withdrawal of the product from the market. In addition, we 
cannot predict what adverse governmental regulations may arise from future United States or foreign governmental 
action. 

FDA Post-Approval Requirements 

Any products manufactured or distributed by us or on our behalf pursuant to FDA approvals are subject to 
continuing regulation by the FDA, including requirements for record-keeping, reporting of adverse experiences with 
the biologic, and submitting biological product deviation reports to notify the FDA of unanticipated changes in 
distributed products. Manufacturers are required to register their facilities with the FDA and certain state agencies, 
and are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with 
cGMP standards. This requires us and our third-party manufacturers to implement certain quality processes, 
manufacturing controls and documentation requirements in order to ensure that the product is safe, has the identity 
and strength, and meets the quality, purity and potency characteristics that it purports to have. Certain states also 
impose requirements on manufacturers and distributors to establish the pedigree of product in the chain of 
distribution, including some states that require manufacturers and others to adopt new technology capable of 
tracking and tracing product as it moves through the distribution chain. We cannot be certain that we or our present 
or future suppliers will be able to comply with the cGMP and other FDA regulatory requirements. If our present or 
future suppliers are not able to comply with these requirements, the FDA may halt our clinical trials, refuse to 
approve any BLA or other application, force us to recall a drug from distribution, shut down manufacturing 
operations or withdraw approval of the BLA for that biologic. Noncompliance with cGMP or other requirements can 
result in issuance of warning letters, civil and criminal penalties, seizures, and injunctive action. 

22

The FDA and other federal and state agencies closely regulate the labeling, marketing and promotion of drugs. 
While doctors may prescribe any product approved by the FDA for any use as long as consistent with any REMS 
restrictions, if applicable, a company can only make claims relating to safety and efficacy of a product that are 
consistent with FDA approval, and the company is allowed to market a drug only for the particular use and 
treatment approved by the FDA. In addition, any claims we make relating to our products in advertising or 
promotion must be appropriately balanced with important safety information and otherwise be adequately 
substantiated. Failure to comply with these requirements can result in adverse publicity, warning letters, corrective 
advertising, injunctions, potential civil and criminal penalties, criminal prosecution, and agreements with 
governmental agencies that materially restrict the manner in which we may promote or distribute drug products. 
Government regulators, including the Department of Justice and the Office of the Inspector General of the 
Department of Health and Human Services, as well as state authorities, recently have increased their scrutiny of the 
promotion and marketing of drugs. 

Orphan Drug and Orphan Medicinal Product Designation and Exclusivity 

The Orphan Drug Act provides incentives for the development of products intended to treat rare diseases or 
conditions, which are generally diseases or conditions that affect fewer than 200,000 individuals in the 
United States. If a sponsor demonstrates that a biologic is intended to treat rare diseases or conditions, the FDA will 
grant orphan designation for that product. Orphan designation must be requested before submitting a BLA. 

Under the Pediatric Research Equity Act, or the PREA, submission of a pediatric assessment is not typically 
required for pediatric investigation of a product that has been granted orphan drug designation. However, under the 
FDA Reauthorization Act of 2017, the scope of the PREA was extended to require pediatric studies for products 
intended for the treatment of an adult cancer that are directed at a molecular target that the Secretary of Health and 
Human Services determines to be substantially relevant to the growth or progression of a pediatric cancer. In 
addition, the FDA issued guidance in 2017 that it no longer intends to grant orphan drug designation to products for 
pediatric subpopulations of common diseases unless the use of the drug in the pediatric subpopulation meets the 
criteria for an orphan disease or unless the disease in the pediatric subpopulation is considered a different disease 
from the disease in the adult population. 

The benefits of orphan drug designation include research and development tax credits and exemption from FDA 
user fees. Orphan designation, however, does not convey any advantage in, or shorten the duration of, the regulatory 
review and approval process. Generally, if a product that receives orphan designation is approved for the orphan 
indication, it receives orphan drug exclusivity, which for seven years prohibits the FDA from approving another 
product with the same active ingredient for the same use. Additionally, if a biologic designated as an orphan product 
receives marketing approval for an indication broader than what is designated, it may not be entitled to orphan drug 
exclusivity. 

Orphan exclusivity will not bar approval of another product under certain circumstances, including if a subsequent 
product with the same active ingredient for the same indication is shown to be clinically superior to the approved 
product on the basis of greater efficacy or safety, or provides a major contribution to patient care, or if the company 
with orphan drug exclusivity is not able to meet market demand. Further, the FDA may approve more than one 
product for the same orphan indication or disease as long as the products contain different active ingredients. As a 
result, even if one of our product candidates receives orphan exclusivity, the FDA can still approve other drugs that 
have a different active ingredient for use in treating the same indication or disease, which could create a more 
competitive market for us. 

After the FDA grants orphan designation, the identity of the applicant, as well as the name of the therapeutic agent 
and its designated orphan use, are disclosed publicly by the FDA. 

23

Similarly, the European Commission grants orphan medicinal product designation to products intended for the 
treatment, prevention or diagnosis of a disease that is life-threatening or chronically debilitating affecting not more 
than five in 10,000 people. In order to receive orphan designation, there must also be no satisfactory method of 
diagnosis, prevention or treatment of the condition, or if such a method exists, the medicine must be of significant 
benefit to those affected by the condition. In addition, sponsors are required to submit to the EMA’s Pediatric 
Committee, or the PDCO, and comply with a pediatric investigation plan, or a PIP, in order to seek marketing 
authorization in the EU.

Designated orphan medicinal products are entitled to a range of incentives during the development and regulatory 
review process, including scientific assistance for study protocols, a partial or total reduction in fees and eligibility 
for conditional marketing authorization. Once authorized, orphan medicinal products are entitled to 10 years of 
market exclusivity in all EU member states. However, marketing authorization may be granted to a similar 
medicinal product with the same orphan indication during the 10-year period with the consent of the marketing 
authorization holder for the original orphan medicinal product or if the manufacturer of the original orphan 
medicinal product is unable to supply sufficient quantities of such product. Marketing authorization may also be 
granted to a similar medicinal product with the same orphan indication if the similar product is established to be 
safer, more effective or otherwise clinically superior to the original orphan medicinal product. After five years, a 
member state can request that the period of market exclusivity be reduced to six years if it can be demonstrated the 
criteria for orphan designation no longer apply and the medicine is sufficiently profitable. The period of market 
exclusivity may be extended by two years for medicines that have also complied with an agreed PIP. 

Biologics Price Competition and Innovation Act of 2009 

The Biologics Price Competition and Innovation Act of 2009, or BPCIA, created a licensure framework for 
biosimilars, which could ultimately subject our biological product candidates to competition from biosimilars. Under 
the BPCIA, a manufacturer may submit an abbreviated application for licensure of a biologic that is “biosimilar to” 
a referenced branded biologic. This abbreviated approval pathway is intended to permit a biosimilar to come to 
market more quickly and less expensively than if a “full” BLA were submitted, by relying to some extent on the 
FDA’s previous review and approval of the reference biologic to which the proposed product is similar. 

Under the BPCIA, a biosimilar sponsor’s ability to seek or obtain approval through the abbreviated pathway is 
limited by periods of exclusivity granted to the sponsor of the reference product. No biosimilar application may be 
submitted until four years after the date of approval of the reference product, and no such application, once 
submitted, may receive final approval until twelve years after that same date (with a potential six-month extension 
of exclusivity if certain pediatric studies are conducted and the results are reported to the FDA). Once approved, 
biosimilar products likely would compete with (and in some circumstances, may be deemed under the law to be 
“interchangeable with”) the previously approved reference product.

FDA Regulation of Companion Diagnostics 

As part of our clinical development plans, we plan to engage third-party collaborators to develop companion 
diagnostics to identify patients most likely to respond to our product candidates. Companion diagnostics are 
classified as medical devices under the Federal Food, Drug, and Cosmetic Act in the United States. The FDA 
regulates medical device design and development, preclinical and clinical testing, premarket clearance or approval, 
registration and listing, manufacturing, labeling, storage, reporting, recordkeeping, advertising and promotion, 
export and import, sales and distribution, and post-market surveillance. Unless an exemption applies, companion 
diagnostics require marketing clearance or approval from the FDA prior to commercial distribution. The two 
primary types of FDA marketing authorization applicable to a medical device are premarket notification, also called 
510(k) clearance, and premarket approval, or PMA. According to a 2014 guidance issued by FDA officials, the use 
of companion diagnostics with therapeutic products raises important concerns about the safety and effectiveness of 
both the companion diagnostic devices and the corresponding therapeutic products and, therefore, ordinarily will 
require a PMA before they are marketed. Because the diagnostic tests that we plan to develop are essential for the 
safety and effective use of our therapeutics in selected patients, these diagnostic tests would be subject to the PMA 
approval process.

24

The PMA process is costly, lengthy and uncertain. PMA applications must be supported by valid scientific evidence, 
which typically requires extensive data, including technical, preclinical, clinical and manufacturing data, to 
demonstrate to the FDA’s satisfaction the safety and effectiveness of the device. For companion diagnostic tests, a 
PMA application typically includes data regarding analytical and clinical validation studies. As part of its review of 
the PMA, the FDA will conduct a pre-approval inspection of the manufacturing facility or facilities to ensure 
compliance with the Quality System Regulation, which requires manufacturers to follow design, testing, control, 
documentation and other quality assurance procedures. FDA review of an initial PMA application is required by 
statute to take between six to ten months. If the FDA evaluations of both the PMA application and the 
manufacturing facilities are favorable, the FDA will either issue an approval letter or an approvable letter, which 
usually contains a number of conditions that must be met in order to secure final approval of the PMA. If the FDA’s 
evaluation of the PMA or manufacturing facilities is not favorable, the FDA will deny approval of the PMA or issue 
a not approvable letter. A not approvable letter will outline the deficiencies in the application, and where practical, 
will identify what is necessary to secure approval of the PMA. The FDA may also determine that additional clinical 
trials are necessary, in which case the PMA may be delayed for several months or years while the trials are 
conducted and the data then submitted in an amendment to the PMA. Once granted, a PMA may be withdrawn by 
the FDA if compliance with post-approval requirements, conditions of approval or other regulatory standards are not 
maintained or problems are identified following initial marketing. 

We and any third-party collaborator who we engage to develop companion diagnostics will work cooperatively to 
generate the data required for submission with the PMA application, and will remain in contact with the Center for 
Devices and Radiological Health, or CDRH, at the FDA to ensure that any changes in requirements are incorporated 
into the development plans. We anticipate that meetings with the FDA with regard to our drug product candidates, 
as well as companion diagnostic product candidates, will include representatives from the Center for Drug 
Evaluation and Research, or the CDER, and CDRH to ensure that the BLA and PMA submissions are coordinated to 
enable the FDA to conduct a parallel review of both submissions. The 2014 guidance issued by the FDA addresses 
issues critical to developing companion diagnostics, such as biomarker qualification, establishing clinical validity, 
the use of retrospective data, the appropriate patient population and when the FDA will require that the device and 
the drug be approved simultaneously. According to the guidance, if safe and effective use of a therapeutic product 
depends on a diagnostic, then the FDA generally will require approval or clearance of the diagnostic at the same 
time that the FDA approves the therapeutic product. We plan to structure our programs for the development of our 
companion diagnostics to be consistent with this guidance. 

In the European Economic Area, or the EEA, in vitro medical devices are required to conform with essential 
requirements by undergoing a conformity assessment procedure. The conformity assessment varies according to the 
type of medical device and its classification. For low-risk devices, the conformity assessment can be carried out 
internally, but for higher risk devices it requires the intervention of an accredited EEA Notified Body. If successful, 
the conformity assessment concludes with the drawing up by the manufacturer of an EC Declaration of Conformity 
entitling the manufacturer to affix the CE mark to its products and to sell them throughout the EEA. We expect our 
companion diagnostic will require a conformity assessment through an accredited EEA Notified Body, and that the 
data generated for the U.S. registration will be sufficient to satisfy the regulatory requirements for the European 
Union and other countries.

25

Coverage and Reimbursement 

In both domestic and foreign markets, sales of any products for which we may receive regulatory approval will 
depend in part upon the availability of coverage and reimbursement from third-party payors. Such third-party payors 
include government health programs, such as Medicare and Medicaid, private health insurers and managed care 
providers, and other organizations. Coverage decisions may depend upon clinical and economic standards that 
disfavor new drug products when more established or lower cost therapeutic alternatives are already available or 
subsequently become available. Assuming coverage is granted, the reimbursement rates paid for covered products 
might not be adequate. Even if favorable coverage status and adequate reimbursement rates are attained, less 
favorable coverage policies and reimbursement rates may be implemented in the future. The marketability of any 
products for which we may receive regulatory approval for commercial sale may suffer if the government and other 
third-party payors fail to provide coverage and adequate reimbursement to allow us to sell such products on a 
competitive and profitable basis. For example, under these circumstances, physicians may limit how much or under 
what circumstances they will prescribe or administer our products and patients may decline to purchase such 
products. This, in turn, could affect our ability to successfully commercialize our products and impact our 
profitability, results of operations, financial condition, and future success. 

The market for any product candidates for which we may receive regulatory approval will depend significantly on 
the degree to which these products are listed on third-party payors’ drug formularies, or lists of medications for 
which third-party payors provide coverage and reimbursement. The industry competition to be included on such 
formularies often leads to downward pricing pressures on pharmaceutical companies. Also, third-party payors may 
refuse to include a particular branded drug on their formularies or otherwise restrict patient access to a branded drug 
when a less costly generic equivalent or other alternative is available. In addition, because each third-party payor 
may individually establish coverage and reimbursement policies, obtaining coverage and adequate reimbursement 
can be a time-consuming and costly process. We may be required to provide scientific and clinical support for the 
use of any product to each third-party payor separately with no assurance that approval would be obtained, and we 
may need to conduct expensive pharmacoeconomic studies in order to demonstrate the cost-effectiveness of our 
products. We cannot be certain that our product candidates will be considered cost-effective. This process could 
delay the market acceptance of any product candidates for which we may receive approval and could have a 
negative effect on our future revenues and operating results. 

Anti-Kickback, False Claims, Physician Payments Sunshine and Other Healthcare Laws

In addition to FDA restrictions on marketing, several other types of U.S. state and federal laws are relevant to 
certain marketing practices in the pharmaceutical and medical device industries and their other interactions with 
health care providers. These laws include the Federal Anti-Kickback Statute, false claims statutes, and the Federal 
Physician Payments Sunshine Act and other healthcare laws. We are subject to these laws and they may affect our 
business. The Federal Anti-Kickback Statute prohibits, among other things, any person or entity from knowingly 
and willfully soliciting, receiving, offering or paying remuneration, directly or indirectly, in exchange for or to 
induce either the referral of an individual for, or the purchase, lease, order or recommendation of, any good or 
service for which payment may be made under federal health care programs such as the Medicare and Medicaid 
programs. This statute has been interpreted to apply to arrangements between pharmaceutical manufacturers on the 
one hand and prescribers, purchasers and formulary managers on the other. Violations of the Federal Anti-Kickback 
Statute are punishable by imprisonment, criminal fines, civil monetary penalties and exclusion from participation in 
federal healthcare programs. The Federal Patient Protection and Affordable Care Act, as amended by the Health 
Care and Education Reconciliation Act of 2010 and subsequent legislation, or collectively, the Affordable Care Act, 
among other things, amends the intent requirement of the Federal Anti-Kickback Statute. A person or entity no 
longer needs to have actual knowledge of this statute or specific intent to violate it. In addition, the Affordable Care 
Act provides that the government may assert that a claim including items or services resulting from a violation of the 
Federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the Federal False Claims Act. 
There are a number of statutory exceptions and regulatory safe harbors protecting certain common activities from 
prosecution or other regulatory sanctions; however, the exceptions and safe harbors are drawn narrowly, and 
practices that do not fit squarely within an exception or safe harbor may be subject to scrutiny. 

26

The Federal False Claims Act prohibits, among other things, any person from knowingly presenting, or causing to 
be presented, a false or fraudulent claim for payment, or knowingly making, or causing to be made, a false record or 
statement material to a false or fraudulent claim. Many pharmaceutical and other healthcare companies have faced 
investigations and private lawsuits and, in many cases, have agreed to significant and burdensome settlements under 
these laws for a variety of allegedly improper promotional and marketing activities, including inflating drug prices 
they report to pricing services, which in turn were used by the government to set Medicare and Medicaid 
reimbursement rates; providing free product to customers with the expectation that the customers would bill federal 
programs for the product; providing consulting fees and other benefits to physicians to induce them to prescribe 
products; or engaging in promotion for “off-label” uses. Federal False Claims Act violations may result in 
significant civil monetary penalties, including three times the damages incurred by the government from the 
violation and exclusion from participation in federal healthcare programs. The majority of U.S. states also have 
statutes or regulations similar to the Federal Anti-Kickback Statute and False Claims Act, which apply to items and 
services reimbursed under Medicaid and other state programs, and in some states, apply regardless of the payor. 

The federal Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information 
Technology for Economic and Clinical Health Act of 2009, and its implementing regulations, or HIPAA, imposes 
criminal liability for knowingly and willfully executing a scheme to defraud any healthcare benefit program, 
knowingly and willfully embezzling or stealing from a health care benefit program, willfully obstructing a criminal 
investigation of a health care offense, or knowingly and willfully making false statements relating to healthcare 
matters. HIPAA also imposes obligations on certain covered entity health care providers, health plans and health 
care clearinghouses as well as their business associates that perform certain services involving the use or disclosure 
of individually identifiable health information, including mandatory contractual terms, with respect to safeguarding 
the privacy, security and transmission of individually identifiable health information.

The federal Physician Payments Sunshine Act, being implemented as the Open Payments Program, requires certain 
manufacturers of products for which payment is available under Medicare, Medicaid, or the Children’s Health 
Insurance Program to track payments and other transfers of value to physicians and teaching hospitals, as well as 
physician ownership and investment interests, and to publicly report such data. Manufacturers subject to the Open 
Payments Program must submit a report on or before the 90th day of each calendar year disclosing reportable 
payments made in the previous calendar year. Failure to comply with the reporting obligations may result in civil 
monetary penalties. 

Several states now require pharmaceutical companies to report expenses relating to the marketing and promotion of 
pharmaceutical products in those states and to report gifts and payments to individual health care providers in those 
states. Some of these states also prohibit certain marketing related activities including the provision of gifts, meals, 
or other items to certain health care providers. In addition, some states require pharmaceutical companies to 
implement compliance programs or marketing codes. 

Because of the breadth of these laws and the narrowness of available statutory and regulatory exemptions, it is 
possible that some of our business activities could be subject to challenge under one or more of such laws. If our 
operations are found to be in violation of any of the federal or state laws described above or any other governmental 
regulations that apply to us, we may be subject to penalties, including significant criminal and civil monetary 
penalties, damages, fines, imprisonment, exclusion from participation in government programs, injunctions, recall or 
seizure of products, total or partial suspension of production, denial or withdrawal of pre-marketing product 
approvals, private “qui tam” actions brought by individual whistleblowers in the name of the government, additional 
reporting requirements and oversight if we become subject to a corporate integrity agreement or similar agreement 
to resolve allegations of non-compliance with these laws, and the curtailment or restructuring of our operations, any 
of which could adversely affect our ability to operate our business and our results of operations.

To the extent that any of our products are sold in a foreign country, we may be subject to similar foreign laws and 
regulations, which may include, for instance, applicable post-marketing requirements, including safety surveillance, 
anti-fraud and abuse laws, and implementation of corporate compliance programs and reporting of payments or 
transfers of value to healthcare professionals.

27

Healthcare Reform

The United States and some foreign jurisdictions are considering or have enacted a number of legislative and regulatory 
proposals to change the healthcare system in ways that could affect our ability to sell our product candidates profitably, 
even if they are approved for sale. Among policy makers and payors in the United States and elsewhere, there is 
significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, 
improving quality and/or expanding access. In the United States, the pharmaceutical and medical device industries have 
been a particular focus of these efforts and have been significantly affected by major legislative initiatives. 

In March 2010, the Affordable Care Act was enacted, which includes measures that have or will significantly 
change the way health care is financed by both governmental and private insurers. 

Some of the provisions of the Affordable Care Act have yet to be implemented, and there have been judicial and 
Congressional challenges to certain aspects of the Affordable Care Act, as well as recent efforts by the Trump 
administration to repeal or replace certain aspects of the Affordable Care Act. Since January 2017, President Trump 
has signed two Executive Orders designed to delay the implementation of certain provision of the Affordable Care 
Act or otherwise circumvent some of the requirements for health insurance mandated by the Affordable Care Act. 
Concurrently, Congress has considered legislation that would repeal or repeal and replace all or part of the 
Affordable Care Act. While Congress has not passed comprehensive repeal legislation, two bills affecting the 
implementation of certain taxes under the Affordable Care Act have been signed into law. The Tax Cuts and Jobs 
Act of 2017 includes a provision repealing, effective January 1, 2019, the tax-based shared responsibility payment 
imposed by the Affordable Care Act on certain individuals who fail to maintain qualifying health coverage for all or 
part of a year that is commonly referred to as the “individual mandate.” Additionally, on January 22, 2018, President 
Trump signed a continuing resolution on appropriations for fiscal year 2018 that delayed the implementation of 
certain Affordable Care Act-mandated fees, including the so-called “Cadillac” tax on certain high cost employer-
sponsored insurance plans, the annual fee imposed on certain health insurance providers based on market share, and 
the medical device excise tax on non-exempt medical devices. Congress also could consider subsequent additional 
legislation to replace elements of the Affordable Care Act that are repealed. We expect that healthcare reform 
measures that may be adopted in the future may result in more rigorous coverage criteria and lower reimbursement, 
and in additional downward pressure on the price that may be charged for any of our product candidates, if 
approved.

Further, there has been heightened governmental scrutiny in the United States of pharmaceutical pricing practices in 
light of the rising cost of prescription drugs and biologics. Such scrutiny has resulted in several recent congressional 
inquiries and proposed federal legislation designed to, among other things, bring more transparency to product 
pricing, review the relationship between pricing and manufacturer patient programs, and reform government 
program reimbursement methodologies for products. At the state level, legislatures are increasingly passing 
legislation and implementing regulations designed to control pharmaceutical and biological product pricing, 
including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing 
cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other 
countries and bulk purchasing. 

Foreign Regulation

In addition to regulations in the United States, we will be subject to a variety of foreign regulations governing 
clinical trials and commercial sales and distribution of our product candidates. Whether or not we obtain FDA 
approval for a product candidate, we must obtain approval from the comparable regulatory authorities of foreign 
countries or economic areas, such as the European Union, before we may commence clinical trials or market 
products in those countries or areas. The approval process and requirements governing the conduct of clinical trials, 
product licensing, pricing and reimbursement vary greatly from place to place, and the time may be longer or shorter 
than that required for FDA approval.

Other Regulations 

We are also subject to numerous federal, state and local laws relating to such matters as safe working conditions, 
manufacturing practices, environmental protection, fire hazard control, and disposal of hazardous or potentially 
hazardous substances. We may incur significant costs to comply with such laws and regulations now or in the future. 

28

Corporate Information and Employees 

Our principal corporate offices are located at 111 Oyster Point Boulevard, South San Francisco, California 94080 
and our telephone number is (415) 365-5600. We were incorporated in December 2001 in Delaware and completed 
our initial public offering, or IPO, in September 2013. As of December 31, 2017, we had 216 full-time employees 
and no part-time employees. Of these employees, 166 were primarily engaged in research and development 
activities and 62 have an M.D. or a Ph.D. degree. 

Available Information 

Our website address is www.fiveprime.com. We make available on our website, free of charge, our Annual Report 
on Form 10-K, our Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K and any amendments to 
those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as 
amended, or the Exchange Act, as soon as reasonably practicable after we electronically file such material with, or 
furnish it to, the Securities and Exchange Commission, or the SEC. Further, a copy of this Annual Report on 
Form 10-K is located at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D. C. 20549. 
Information on the operation of the Public Reference Room can be obtained by calling the SEC at 1-800-SEC-0330. 
The SEC maintains a website that contains reports, proxy and information statements and other information 
regarding our filings at www.sec.gov. The information found on our website is not incorporated by reference into 
this Annual Report on Form 10-K or any other report we file with or furnish to the SEC. 

29

Item 1A. Risk Factors 

This Annual Report on Form 10-K contains forward-looking information based on our current expectations. 
Because our business is subject to many risks and our actual results may differ materially from any forward-looking 
statements made by or on behalf of us, this section includes a discussion of important factors that could affect our 
business, operating results, financial condition and the trading price of our common stock. You should carefully 
consider these risk factors, together with all of the other information included in this Annual Report on Form 10-K 
as well as our other publicly available filings with the SEC. 

Risks Related to Our Financial Position and Capital Needs 

We expect to incur net losses for the foreseeable future. 

We are a clinical-stage biotechnology company with a limited operating history. Investment in biopharmaceutical 
product development is highly speculative because it entails substantial upfront capital expenditures and significant 
risk that any potential product candidate will fail to demonstrate adequate effect or an acceptable safety profile, gain 
regulatory approval and become commercially viable. We have no products approved for commercial sale and have 
not generated any revenue from product sales to date and we continue to incur significant research and development 
and other expenses related to our ongoing operations. As a result, we are not profitable and have incurred losses in 
each period since our inception in 2001, with the exception of the fiscal year ended December 31, 2015, due 
primarily to the $350.0 million upfront payment we received from Bristol-Myers Squibb Company, or BMS, from 
our license and collaboration agreement for cabiralizumab, and the fiscal year ended December 31, 2011, due 
primarily to the $50.0 million upfront payment we received from Human Genome Sciences, Inc. from our license 
and collaboration agreement for FP-1039. For the fiscal year ended December 31, 2017, we reported a net loss of 
$150.2 million.

Although we may from time to time report profitable results, we generally expect to continue to incur significant 
expenses and increasing operating losses for the foreseeable future. The net losses we incur may fluctuate 
significantly from quarter to quarter. We expect our operating expenses to increase as we advance our research and 
development of, and seek regulatory approvals for, our product candidates. We may encounter unforeseen expenses, 
difficulties, complications, delays and other unknown circumstances that may adversely affect our business. The size 
of our future net losses will depend, in part, on the rate of future growth of our expenses and our ability to generate 
revenues. Our prior losses and expected future losses have had and will continue to have an adverse effect on our 
stockholders’ equity and working capital. 

We currently have no source of product revenue and may never become consistently profitable. 

To date, we have not generated any revenue from commercialization of our product candidates. Our ability to 
generate product revenue and ultimately become profitable depends upon our ability, alone or with our partners, to 
successfully commercialize products, including any of our current product candidates or other product candidates 
that we may develop, in-license or acquire in the future. We do not anticipate generating revenue from the sale of 
products for the foreseeable future. Our ability to generate future product revenue from our current or future product 
candidates also depends on additional factors, including our or our partners’ ability to: 

•

•

•

•

successfully complete research and clinical development of current and future product candidates; 

establish and maintain supply and manufacturing relationships with third-parties to ensure adequate, 
timely and compliant manufacturing of bulk drug substances and drug products to maintain that supply; 

launch and commercialize future product candidates for which we obtain marketing approval, if any, and 
if launched independently or with certain partners, successfully establish a sales force, marketing and 
distribution infrastructure; 

obtain coverage and adequate product reimbursement from third-party payors, including government 
payors; 

30

•

•

•

•

successfully develop, validate and obtain any necessary regulatory approvals of companion diagnostics to 
our product candidates on a timely basis;

achieve market acceptance for our or our partners’ products, if any; 

acquire rights to and otherwise establish, maintain and protect intellectual property necessary to develop 
and commercialize our product candidates; and 

attract, hire and retain qualified personnel. 

In addition, because of the numerous risks and uncertainties associated with pharmaceutical product development, 
including that our product candidates may not advance through development or achieve the endpoints of applicable 
clinical trials, we are unable to predict the timing or amount of increased expenses, or if or when we will achieve or 
maintain profitability. In addition, our expenses could increase beyond our current expectations if we decide to or 
are required by the U.S. Food and Drug Administration, or FDA, or foreign regulatory authorities to perform studies 
or trials in addition to those that we currently anticipate. Even if we complete the development and regulatory 
processes described above, we anticipate incurring significant costs associated with launching and commercializing 
our products. 

Even if we generate revenue from the sale of any of our products that may be approved, we may not become 
profitable and may need to obtain additional funding to continue operations. If we fail to become profitable or do not 
sustain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and 
be forced to reduce our operations. 

We will require additional capital to finance our operations, which may not be available to us on acceptable 
terms or at all. As a result, we may not complete the development and commercialization of our product 
candidates or develop new product candidates. 

As a research and development company, our operations have consumed substantial amounts of cash since 
inception. Although we have sufficient cash and cash equivalents to fund our projected operating expenses and 
capital expenditure requirements for at least the next 12 months, we expect our research and development expenses 
to increase substantially in connection with our ongoing activities, particularly as we advance our product candidates 
further into clinical development, advance additional product candidates into clinical trials and increase the number 
and size of our clinical trials. In addition, circumstances may cause us to consume capital more rapidly than we 
currently anticipate. For example, as we move our product candidates through preclinical studies and into clinical 
development, we may have adverse results that require us or cause our collaboration partner on the program to 
terminate the program, conduct additional research or development activities or studies or substantially redesign a 
product candidate. Any of these events may lengthen the development process or increase our development costs. 
We may need to raise additional funds or otherwise obtain funding through product collaborations if we choose to 
initiate additional clinical trials for product candidates beyond the programs we have currently partnered. In any 
event, we will require additional capital to obtain regulatory approval for, and to commercialize, current and future 
product candidates. 

If we need to secure additional financing, such additional fundraising efforts may divert our management from our 
day-to-day activities, which may adversely affect our ability to develop and commercialize current and future 
product candidates. In addition, we cannot guarantee that future financing will be available in sufficient amounts or 
on terms acceptable to us, if at all. If we do not raise additional capital when required or on acceptable terms, we 
may need to: 

•

•

•

significantly delay, scale back or discontinue the development or commercialization of one or more of our 
product candidates or cease operations altogether; 

seek collaborations for research and development programs at an earlier stage than we would otherwise 
desire or on terms less favorable than might otherwise be available; or 

relinquish or license on unfavorable terms our rights to technologies or product candidates that we 
otherwise would seek to develop or commercialize ourselves. 

31

If we need to conduct additional fundraising activities and we do not raise additional capital in sufficient amounts or 
on terms acceptable to us, we may be prevented from pursuing development and commercialization efforts, which 
could have a material adverse effect on our business, operating results and prospects. 

Our forecast of the time through which our financial resources will adequately support our operations could vary as 
a result of a number of factors, including the factors discussed elsewhere in this “Risk Factors” section. Our future 
funding requirements, both short- and long-term, will depend on many factors, including: 

•

•

•

•

the initiation, progress, timing, costs and results of preclinical and clinical studies for our current product 
candidates and future product candidates we may develop; 

the outcome, timing and cost of seeking and obtaining regulatory approvals from the FDA and 
comparable foreign regulatory authorities, including the potential that such authorities may require us to 
perform more studies than those that we currently expect; 

the cost to establish, maintain, expand and defend the scope of our intellectual property portfolio, 
including the amount and timing of any payments we may be required to make, or that we may receive, in 
connection with licensing, preparing, filing, prosecuting, maintaining, defending and enforcing any of our 
patents or other intellectual property rights; 

the effect of competing technological and market developments; 

• market acceptance of any of our approved product candidates; 
•

the costs of acquiring, licensing or investing in additional businesses, products, product candidates and 
technologies; 

•

•

the cost and timing of selecting, auditing and potentially validating a manufacturing site for commercial-
scale manufacturing; and 

the cost of establishing sales, marketing and distribution capabilities for any product candidates for which 
we may receive regulatory approval and that we choose to commercialize ourselves or with our 
collaboration partners. 

If a lack of available capital means that we cannot expand our operations or otherwise capitalize on our business 
opportunities, our business, financial condition and results of operations could be materially adversely affected. 

Raising additional capital may cause dilution to our existing stockholders, restrict our operations or require us to 
relinquish rights to our technologies. 

Until we generate sufficient product revenue, if ever, we expect to finance our future cash needs through public or 
private equity or debt offerings. Additional capital may not be available on reasonable terms, if at all. Raising 
additional funds through the issuance of additional debt or equity securities could dilute our existing stockholders or 
increase fixed payment obligations. Furthermore, these securities may have rights senior to those of our common 
stock and could contain covenants that restrict our operations and potentially impair our competitiveness, such as 
limitations on our ability to incur additional debt, limitations on our ability to acquire, sell or license intellectual 
property rights and other operating restrictions that could adversely impact our ability to conduct our business. Any 
of these events could significantly harm our business, financial condition and prospects.

32

Comprehensive tax reform legislation could adversely affect our business and financial condition.

On December 22, 2017, the Tax Cuts and Jobs Act of 2017, or the Tax Act, was signed into law. The Tax Act, 
among other things, contains significant changes to corporate taxation, including (i) reduction of the corporate tax 
rate from a top marginal rate of 35% to a flat rate of 21%, (ii) limitation of the tax deduction for interest expense to 
30% of adjusted earnings (except for certain small businesses), (iii) limitation of the deduction for net operating 
losses to 80% of current year taxable income in respect of net operating losses generated during or after 2018 and 
elimination of net operating loss carrybacks, (iv) one-time taxation of offshore earnings at reduced rates regardless 
of whether they are repatriated, (v) immediate deductions for certain new investments instead of deductions for 
depreciation expense over time, and (vi) modifying or repealing many business deductions and credits, including 
reducing the Orphan Drug Credit from 50% to 25% of clinical costs incurred in the United States. Any federal net 
operating loss incurred in 2018 and in future years may now be carried forward indefinitely pursuant to the Tax Act. 
It is uncertain if and to what extent various states will conform to the newly enacted federal tax law. We will 
continue to examine the impact the Tax Act may have on our business. 

Risks Related to Our Business and Industry 

We may not advance additional product candidates into clinical development or identify or validate additional 
drug targets. If we do not advance additional product candidates into clinical development or identify or validate 
additional drug targets, or if we experience significant delays in doing any of the foregoing, our business will be 
materially harmed. 

We have invested a significant portion of our efforts and financial resources in the identification and validation of 
new targets for protein therapeutics and the identification and preclinical development of product candidates to these 
targets or in these target pathways. We are clinically developing our product candidates cabiralizumab, 
bemarituzumab and FPA150, and our preclinical program FPT155 is in IND-enabling studies. Our ability to 
generate product revenues, which we do not expect to occur for many years, if ever, will depend heavily on our 
ability to identify and validate new targets and identify and advance preclinical product candidates into and through 
clinical development. The outcome of preclinical studies of our product candidates may not predict the success of 
clinical trials. Moreover, preclinical results regarding a product candidate are often susceptible to varying 
interpretations and analyses and may not translate into similar results when the product candidate is tested clinically 
in humans. Many companies have believed their product candidates performed satisfactorily in preclinical studies, 
but such product candidates have nonetheless failed in clinical development. Our inability to successfully complete 
preclinical development of our product candidates could result in additional costs to us, delay or prevent our ability 
to advance product candidates into clinical development or commercialization, impair our ability to achieve 
development, regulatory, commercialization or sales milestone payments from our current or future collaboration 
partners, or to generate and receive royalties on product sales or product revenues from our current or future 
collaboration partners. 

If clinical trials of our product candidates fail to demonstrate safety and efficacy to the satisfaction of regulatory 
authorities or do not otherwise produce meaningfully positive results, we may incur additional costs or 
experience delays in completing, or ultimately be unable to complete, the development and commercialization of 
our product candidates. 

Before obtaining marketing approval from regulatory authorities for the sale of our product candidates, we or our 
partners must conduct extensive clinical trials to demonstrate the safety and efficacy of the product candidates in 
humans. Clinical testing is expensive and difficult to design and implement, can take many years to complete and is 
uncertain as to outcome. A failure of one or more clinical trials can occur at any stage of testing. The outcome of 
preclinical studies and early clinical trials may not predict the success of later clinical trials and interim results of a 
clinical trial do not necessarily predict final results. A number of companies in the pharmaceutical and 
biotechnology industries have suffered significant setbacks in advanced clinical trials due to lack of efficacy or 
unacceptable safety profiles, notwithstanding promising results in earlier trials. Despite the results reported from our 
clinical trials and preclinical studies for our product candidates, we do not know whether the clinical trials we or our 
partners may conduct will demonstrate adequate efficacy and safety to result in regulatory approval to market any of 
our product candidates in any particular jurisdiction or jurisdictions. If later-stage clinical trials do not produce 
favorable results, our or our partners’ ability to achieve regulatory approval for any of our product candidates may 
be adversely impacted. 

33

Delays in clinical testing will delay the commercialization of our product candidates, increase our costs and harm 
our business. 

We do not know whether any of our clinical trials will begin as planned, will need to be amended or restructured or 
will be completed on schedule, or at all. Our product development costs will increase if we experience delays in 
clinical testing. Significant clinical trial delays also could shorten any periods during which we may have the 
exclusive right to commercialize our product candidates or could allow our competitors to bring products to market 
before we do, which would impair our ability to successfully commercialize our product candidates and may harm 
our business, results of operations and prospects. Events which may result in a delay or unsuccessful completion of 
clinical development include: 

•

•

•

•

•

•

•

•

•

delays in reaching an agreement with or failure in obtaining authorization from the FDA or other 
regulatory authorities and institutional review boards, or IRBs; 

imposition of a clinical hold following an inspection of our manufacturing or clinical trial operations or 
clinical trial sites by the FDA or other regulatory authorities, or a decision by the FDA, other regulatory 
authorities, IRBs or us, or recommendation by a data safety monitoring board, to suspend or terminate a 
clinical trial at any time for safety or other reasons; 

delays in reaching agreement on acceptable terms with prospective CROs, clinical trial sites, laboratory 
service providers, CMOs and other service providers we engage to support the conduct of our clinical 
trials; 

deviations from the trial protocol by clinical trial sites or investigators or failure to conduct a clinical trial 
in accordance with regulatory requirements; 

failure of third-parties, such as CROs, to satisfy their contractual duties or meet expected deadlines; 

delays in the testing, validation and manufacturing of product candidates and in the delivery of these 
product candidates to clinical trial sites; 

for clinical trials in selected patient populations, delays in identification and auditing of central or other 
laboratories or the transfer and validation of assays or tests used to identify selected patients; 

delays in completion of patients’ participation in a clinical trial or return for post-treatment follow-up; 

delays caused by patients dropping out of a clinical trial due to side effects, disease progression or other 
reasons; 

• withdrawal of clinical trial sites from our clinical trials as a result of the investigator at the clinical trial 
site ceasing their affiliation with the clinical trial site, changing standards of care or the ineligibility of a 
clinical trial site to participate in our clinical trials; 

•

•

changes in government policies, laws, regulations or administrative actions; or 

lack of adequate funding to continue the clinical trials. 

For example, we are conducting the Phase 3 portion of our global Phase 1/3 registrational trial of bemarituzumab in 
combination with 5-fluorouracil (5-FU), leucovorin, and oxaliplatin as front-line treatment for patients with gastric 
and gastroesophageal, or GEJ, cancer that overexpresses FGFR2b, or the FIGHT trial, in China in collaboration with 
Zai Lab (Shanghai) Co., Ltd., or Zai Lab. Given the potential patient population in China, we believe that our ability 
to enroll patients at clinical sites in China will reduce the overall time to fully enroll the Phase 3 portion of our 
FIGHT trial and will therefore allow us to advance and complete the Phase 3 portion of the FIGHT trial in a shorter 
timeframe. However, Zai Lab’s ability to initiate and conduct the FIGHT trial in China depends on Zai Lab’s and 
our ability to comply with the government policies, laws and regulations applicable to conducting clinical trials, 
obtaining approval for and commercializing drug products in China. The government policies, laws and regulations 
in China are evolving rapidly and changes to these policies, laws and regulations are difficult to predict. If any such 
government policies, laws or regulations in China evolve in a way that make it more difficult or inefficient for us or 
Zai Lab to conduct our FIGHT trial in China, we may experience delays in initiating or conducting the FIGHT trial 
at our clinical trial sites in China and in fully enrolling the Phase 3 portion of the FIGHT trial, which will delay our 
ability to obtain approval for and commercialize bemarituzumab.

34

If we or our partners are unable to timely complete clinical development, we may incur additional costs and our ability 
to achieve development, regulatory, commercialization or sales milestones or to generate and receive royalties on 
product sales and product revenues may be impaired. 

If we or our partners are unable to timely enroll patients in clinical trials, we will be unable to complete these 
trials on a timely basis. 

The timely completion of clinical trials largely depends on the rate of patient enrollment. Many factors affect the 
rate of patient enrollment, including:

•

•

•

•

•

•

•

•

•

the size and nature of the patient population; 

the number and location of clinical trial sites; 

competition with other companies for clinical trial sites or patients; 

the eligibility and exclusion criteria for the trial; 

the design of the clinical trial; 

inability to obtain and maintain patient consents; 

the availability of supplies of drug product for clinical use;

risk that enrolled subjects will drop out before completion; and 

competing clinical trials and clinicians’ and patients’ perceptions as to the potential advantages of the 
product candidate being studied in relation to other available therapies, including any new drugs that may 
be approved for the indications we are investigating. 

There is significant competition for recruiting patients in the clinical trials we and our partners are conducting and 
plan to conduct, and we or our partners may be unable to timely enroll the patients necessary to complete clinical 
trials on a timely basis or at all. 

For example, we are conducting a Phase 2 clinical trial of cabiralizumab in patients with diffuse PVNS. Very little 
data regarding the incidence and prevalence of diffuse PVNS exist, but data we have gathered suggest that the 
prevalence of diffuse PVNS in the United States may be approximately 28,000 patients. We expect that the limited 
size of the diffuse PVNS patient population will limit patient enrollment rates. Daiichi Sankyo Co., Ltd./Plexxikon 
Inc., or Daiichi Sankyo, has conducted a Phase 3 clinical trial (ENLIVEN) of pexidartinib (PLX3397) in PVNS, and 
we believe plans to pursue approval of pexidartinib for use in PVNS. If pexidartinib is approved in any region where 
we are conducting clinical trials of cabiralizumab in PVNS, it may impact our ability to enroll and timely complete 
those trials. In addition, Novartis AG, or Novartis, is conducting a Phase 2 clinical trial of its MCS110 CSF1 
monoclonal antibody in PVNS and F. Hoffmann-La Roche AG, or Roche, has clinically tested its emactuzumab 
(RO5509554, RG7155) antibody in PVNS patients. If either or both of Novartis or Roche continue the clinical 
development of their respective products in PVNS, we would potentially compete with them for patient enrollment 
in this rare patient population, which may adversely impact the rate of patient enrollment in and the timely 
completion of our Phase 2 clinical trial of cabiralizumab in PVNS. 

Additionally, although we believe selecting patients with gastric and GEJ cancer whose tumors overexpress 
FGFR2b or amplify the FGFR2 gene using an IHC- or ctDNA blood-based companion diagnostic should increase 
the percentage of patients eligible for and the probability of success in our clinical trials of bemarituzumab in gastric 
and GEJ cancer, these selection criteria limit the number of patients eligible for enrollment.

35

We may not successfully identify, test, develop or commercialize our current or future product candidates, which 
may force us to abandon our development efforts for one or more programs. 

The success of our business depends primarily upon our ability to identify and validate new protein therapeutic 
targets, including through the use of our discovery platform, and discover, test, develop and commercialize protein 
therapeutics, which we may develop ourselves or in-license from third-parties. Our research efforts may initially 
show promise in discovering potential new protein therapeutic targets or candidates, yet fail to yield product 
candidates for clinical development and ultimate commercialization for numerous reasons, including: 

•

our research methodology, including our screening technology, may not successfully identify medically 
relevant protein therapeutic targets or potential product candidates; 

• we tend to identify and select from our discovery platform novel, untested targets that may be challenging 
to validate because of the novelty of the target or that we may fail to validate at all after further research; 

• we may encounter product manufacturing difficulties that limit yield or produce undesirable 

characteristics that increase the cost of goods, cause delays or make our product candidates unmarketable;

•

•

•

•

third-parties on whom we may rely to generate antibody candidates may fail to produce candidates that 
we can successfully validate or that have the scientific or clinical characteristics necessary to become 
marketable product candidates;  

our product candidates may cause adverse effects in patients or subjects, even after successful initial 
toxicology studies or early-stage clinical trials, which may make our product candidates unmarketable; 

our product candidates may not demonstrate a meaningful benefit to patients or subjects; or 

our collaboration partners may change their development profiles or plans for potential product 
candidates or abandon a therapeutic area or the development of a partnered product. 

The occurrence of any of these events may force us to abandon our development efforts for one or more programs, 
which would have a material adverse effect on our business, operating results and prospects and could potentially 
cause us to cease operations. Research programs to identify new product targets and candidates require substantial 
technical, financial and human resources. We may focus our efforts and resources on potential discovery efforts, 
programs or product candidates that ultimately prove to be unsuccessful. 

We are subject to a multitude of manufacturing risks, any of which could substantially increase our costs and 
limit supply of our products. 

The process of manufacturing our product candidates is complex and subject to a number of risks, including the 
following:

•

The process of manufacturing biologics is susceptible to product loss due to contamination, equipment 
failure, improper installation or operation of equipment, or vendor or operator error leading to process 
deviations. Even minor deviations from normal manufacturing processes could result in reduced 
production yields, product defects and other supply disruptions. If microbial, viral or other contaminations 
are discovered in our products or in the manufacturing facilities in which our products are made, such 
manufacturing facilities may need to be closed for an extended time to investigate and remediate the 
contamination. 

•

The manufacturing facilities in which our products are made could be adversely affected by equipment 
failures, labor and raw material shortages, natural disasters, power failures and numerous other factors. 
• Any adverse developments affecting manufacturing operations for our products may result in shipment 
delays, inventory shortages, lot failures, product withdrawals or recalls, or other interruptions in the 
supply of our products to clinical trial sites. We may also have to take inventory write-offs and incur other 
charges and expenses for products that fail to meet specifications, or because we must undertake costly 
remediation efforts or seek more expensive manufacturing alternatives. 

36

Certain raw materials necessary for the manufacture of our products, such as growth media, resins and filters, are 
sourced from a single supplier. We do not have agreements in place that guarantee our supply or the price of these 
raw materials. Any significant delay in the acquisition or decrease in the availability of these raw materials could 
considerably delay the manufacture of our product candidates, which could adversely impact the timing of any 
planned clinical trials or the regulatory approval of that product candidate. 

We have process development and small-scale preclinical manufacturing capabilities. We do not have and we do not 
currently plan to acquire or develop the facilities or capabilities to manufacture bulk drug substance or filled drug 
product for use in human clinical trials or commercialization. In the past we have engaged, and we expect in the 
future to engage, third-party CMOs for the manufacture of bulk drug substance and drug product for our clinical 
trials and additional third-parties for our supply chain. Any problems we experience with any of these third-parties 
could delay the manufacturing of our product candidates and the progress of our clinical trials, which could harm 
our results of operations. 

For example, BMS has the exclusive right to manufacture cabiralizumab. Under our cabiralizumab collaboration 
agreement with BMS, BMS will supply us with cabiralizumab, at its cost and expense, for our use in the conduct of 
our clinical trial evaluating cabiralizumab in combination with Opdivo in multiple tumor types and our Phase 2 
clinical trial of cabiralizumab in patients with PVNS and will supply us with cabiralizumab, in exchange for a 
service fee, for our conduct of our independent development activities with respect to cabiralizumab. 

We have not contracted with alternate suppliers in the event the current organizations we utilize for manufacturing 
are unable to scale production or if we otherwise experience any problems with them. If we are unable to arrange for 
alternative third-party manufacturing sources, or are unable to do so on commercially reasonable terms or in a 
timely manner, we may be delayed in the development of our product candidates. 

Our reliance on third-party manufacturers subjects us to risks to which we would not be subject if we manufactured 
product candidates internally, including potential failure of the third-party to abide by regulatory and quality 
assurance requirements, the possibility of breach of the manufacturing agreement by the third-party due to factors 
beyond our control (including the third-party’s failure to manufacture our product candidates or any products we 
may eventually commercialize in accordance with our specifications) and the possibility of termination or 
nonrenewal of the agreement by the third-party, based on its own business priorities, at a time when finding and 
retaining a replacement manufacturer may be costly or damaging to our business. 

The regulatory approval processes of the FDA and comparable foreign regulatory authorities are lengthy, time-
consuming and inherently unpredictable. Our inability to obtain regulatory approval for our product candidates 
would substantially harm our business. 

The time required to obtain approval by the FDA and comparable foreign regulatory authorities is unpredictable but 
typically takes many years following the commencement of clinical trials and depends on numerous factors, 
including the substantial discretion of the regulatory authorities. In addition, approval policies, regulations, or the 
type and amount of clinical data necessary to gain approval may change during a product candidate’s clinical 
development and may vary among jurisdictions. We have not obtained regulatory approval for any of our product 
candidates and it is possible that none of our existing product candidates or any future product candidates will ever 
obtain regulatory approval. 

Our product candidates could fail to receive regulatory approval from the FDA or a comparable foreign regulatory 
authority for many reasons, including: 

•

•

•

•

the FDA’s or such comparable foreign regulatory authority’s disagreement with the design or 
implementation of our clinical trials; 

our failure to demonstrate that a product candidate is safe and effective for its proposed indication; 

the failure of our clinical trial data to meet the level of statistical significance required for approval; 

our failure to demonstrate that a product candidate’s clinical and other benefits outweigh its safety risks; 

37

•

•

•

•

the FDA’s or such comparable foreign regulatory authority’s disagreement with our interpretation of data 
from preclinical studies or clinical trials; 

the insufficiency of our clinical trial data to support the submission and filing of a Biologic License 
Application or other submission or to obtain regulatory approval; 

our failure to obtain approval from the FDA or such comparable foreign regulatory authority for the 
manufacturing processes or facilities of third-party manufacturers with whom we contract for clinical and 
commercial supplies; or 

changes in the standard of care or approval policies or regulations that render our preclinical and clinical 
data insufficient for approval. 

The FDA or a comparable foreign regulatory authority may require more information to support approval of a 
product candidate, including additional preclinical or clinical data, which may delay or prevent approval and our 
commercialization plans, or result in our decision to abandon the development program with respect to such product 
candidate. If we were to obtain approval for any of our product candidates, regulatory authorities may approve any 
such product candidate for fewer or more limited indications than we request, may grant approval contingent on the 
performance of costly post-marketing clinical trials, or may approve a product candidate with a label that does not 
include the labeling claims necessary or desirable for the successful commercialization of that product candidate. 

Our product candidates may cause undesirable side effects or have other properties that could delay or prevent 
their regulatory approval, limit the commercial profile of an approved label, or result in significant negative 
consequences following any marketing approval. 

Undesirable side effects caused by our product candidates could cause us or regulatory authorities to interrupt, delay 
or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval by the 
FDA or other comparable foreign regulatory authority or otherwise limit the commercial potential of any such 
product candidate. Results of our clinical trials could reveal a high and unacceptable severity or prevalence of side 
effects or unexpected characteristics. In such an event, we could suspend or terminate our trials or the FDA or 
comparable foreign regulatory authorities could order us to cease clinical trials or deny approval of our product 
candidates for any or all targeted indications. Drug-related side effects could affect patient recruitment or the ability 
of enrolled subjects to complete the trial or could result in potential product liability claims. Any of these 
occurrences may harm our business, financial condition and prospects significantly. 

Additionally, if one or more of our products receives marketing approval, and we or others later identify undesirable 
side effects caused by any such product, numerous potentially significant negative consequences could result, 
including: 

• we may suspend marketing of, or withdraw or recall, such product; 
•

regulatory authorities may withdraw approvals of such product; 

•

•

•

regulatory authorities may require additional warnings on the label for such product; 

regulatory authorities may issue safety alerts, Dear Healthcare Provider letters, press releases or other 
communications containing warnings about such product; 

regulatory authorities may require the establishment or modification of a risk evaluation and mitigation 
strategy, or REMS, or a similar strategy that may, for instance, restrict distribution of such product and 
impose burdensome implementation requirements on us; 

•

regulatory authorities may require that we conduct post-marketing studies; 
• we could be sued and held liable for harm caused to subjects or patients; and 
•

our reputation may suffer. 

38

Any of these events could prevent us from achieving or maintaining market approval or acceptance for a product 
candidate or otherwise materially harm the commercial prospects for such product candidate, if approved, and could 
significantly harm our business, results of operations and prospects. 

Certain of our product candidates are expected to be effective only in certain selected patient populations, 
including bemarituzumab and FPA150. If we are unable to successfully develop companion diagnostics for these 
product candidates, or experience significant delays in doing so, we may not achieve marketing approval or 
realize the full commercial potential of bemarituzumab. 

We plan to develop a companion diagnostic for certain of our product candidates, including bemarituzumab and 
FPA150. We have collaborated with third-party diagnostic development partners to develop both an IHC- and a 
ctDNA blood-based assay to use as companion diagnostics for bemarituzumab to identify patients with gastric and 
GEJ cancer whose tumors overexpress FGFR2b or amplify the FGFR2 gene. We expect that the FDA and 
comparable foreign regulatory authorities may require the development and regulatory approval of at least one 
companion diagnostic as a condition to approving bemarituzumab for use in patients that overexpress the FGFR2b 
protein or amplify the FGFR2 gene. We are initially seeking to develop bemarituzumab to treat a subset of patients 
with gastric and GEJ cancer whose tumors overexpress FGFR2b or have FGFR2 gene amplification. Because the 
IHC-based companion diagnostic will allow us to determine FGFR2b overexpression in tumor tissue samples from 
patients with gastric or GEJ cancer and the blood-based companion diagnostic will allow us to detect FGFR2 gene 
amplification by ctDNA from patients with gastric or GEJ cancer, we plan to use both companion diagnostics 
concurrently in our FIGHT trial to more effectively identify patients with gastric or GEJ cancer who may qualify for 
enrollment in the trial. 

In addition, we are seeking to develop FPA150 to treat patients with a variety of cancers whose tumors express the 
B7-H4 protein, as identified by an IHC diagnostic test. We expect that the FDA and comparable foreign regulatory 
authorities may require the development and regulatory approval of at least one companion diagnostic as a condition 
to approving FPA150 for use in patients that express the B7-H4 protein. We have collaborated with a third-party 
diagnostic development partner to develop an IHC assay to use as a lab-developed test to identify patients whose 
tumors express B7-H4 and plan to use this IHC assay in the Phase 1b portion of our Phase 1a/1b clinical trial of 
FPA150.

We do not have experience or capabilities in developing or commercializing diagnostics and will depend on the 
sustained cooperation and effort of our third-party collaborators to perform these functions. 

If we or our third-party collaborators are unable to successfully develop companion diagnostics for bemarituzumab 
or FPA150 or experience delays in doing so, we may suffer significant negative consequences, including: 

•

•

the development of bemarituzumab or FPA150, as applicable, may be adversely affected because we may 
be unable to appropriately select patients for enrollment in our clinical trials; 

bemarituzumab or FPA150, as applicable, may not receive marketing approval if its safe and effective use 
depends on use of a companion diagnostic; or 

• we may not realize the full commercial potential of bemarituzumab or FPA150 if, among other reasons, 

we are unable to appropriately identify patients with FGFR2b protein overexpression or B7-H4 
expression, respectively. 

The occurrence of any of these events would harm our business, possibly materially.

Companion diagnostics are also subject to regulation by the FDA and comparable foreign regulatory authorities as 
medical devices and may require separate regulatory approval prior to commercialization, which may cause delays 
in developing the companion diagnostics and harm our business. 

39

Even if our product candidates receive regulatory approval, they may still face future development and regulatory 
difficulties, which may inhibit our ability to commercialize our products and generate revenue. 

Even if we obtain regulatory approval for a product candidate, the product would be subject to ongoing requirements 
by the FDA and comparable foreign regulatory authorities governing the manufacture, quality control, further 
development, labeling, packaging, storage, distribution, safety surveillance, import, export, advertising, promotion, 
recordkeeping and reporting of safety and other post-market information for such product candidate. The FDA and 
comparable foreign regulatory authorities will continue to closely monitor the safety profile of any product even 
after approval. If the FDA or comparable foreign regulatory authorities become aware of new safety information 
after approval of any of our product candidates, they may require labeling changes or establishment of a REMS or 
similar strategy, impose significant restrictions on the product’s indicated uses or marketing, or impose ongoing 
requirements for post-approval studies or post-market surveillance, which may be costly. 

In addition, drug product manufacturers and their facilities are subject to continual review and periodic inspections 
by the FDA and other regulatory authorities for compliance with current Good Manufacturing Practices, or cGMP, 
regulations and standards. If we or a regulatory authority discover previously unknown problems with one of our 
product candidates, such as adverse events of unanticipated severity or frequency, or problems with the facility 
where such product is manufactured, a regulatory authority may impose restrictions on that product, the 
manufacturing facility or us, including requiring recall or withdrawal of such product from the market or suspension 
of manufacturing. If we, our product candidates or the manufacturing facilities for our product candidates fail to 
comply with applicable regulatory requirements, a regulatory authority may: 

•

issue warning letters or untitled letters; 

• mandate modifications to promotional materials or require us to provide corrective information to 

healthcare practitioners; 

•

•

•

•

•

•

•

require us to enter into a consent decree, which may include imposition of various monetary fines, 
reimbursements for inspection costs, required due dates for specific actions and penalties for 
noncompliance; 

seek an injunction or bring other court action to impose civil or criminal penalties or monetary fines; 

suspend or withdraw regulatory approval; 

suspend any ongoing clinical trials; 

refuse to approve pending applications or supplements to applications that we have filed; 

suspend or impose restrictions on operations, including costly new manufacturing requirements; or 

seize or detain products, refuse to permit the import or export of products, or require us to initiate a 
product recall. 

The occurrence of any event or penalty described above may limit or prevent our ability to commercialize our 
products and generate revenue. 

Advertising and promotion of any product candidate that obtains approval in the United States will be heavily 
scrutinized by the FDA, the Department of Justice, the Department of Health and Human Services’ Office of 
Inspector General, state attorneys general, members of Congress and the public. Violations, including promotion of 
our products for unapproved or off-label uses, may be subject to enforcement letters, inquiries, investigations and 
civil and criminal sanctions by the government. Additionally, comparable foreign regulatory authorities will heavily 
scrutinize advertising and promotion of any product candidate that obtains approval outside of the United States. 

40

In the United States, engaging in the impermissible promotion of products for off-label uses can also subject a 
company to false claims litigation under federal and state statutes, which can lead to civil and criminal penalties and 
fines and agreements that materially restrict the manner in which such company promotes or distributes drug 
products. These false claims statutes include the federal False Claims Act, which allows any individual to bring a 
lawsuit against a pharmaceutical company on behalf of the federal government alleging submission of false or 
fraudulent claims or that such company caused another entity or individual to present such false or fraudulent claims 
for payment by a federal program such as Medicare or Medicaid. If the government prevails in the lawsuit, the 
individual will receive a portion of any fines or settlement funds. Since 2004, these False Claims Act lawsuits 
against pharmaceutical companies have increased significantly in volume and breadth, leading to several substantial 
civil and criminal settlements involving fines exceeding $1.0 billion based on certain sales practices promoting off-
label drug uses. This growth in litigation has increased the risk that a pharmaceutical company will have to defend a 
false claims action, pay settlement fines or restitution, agree to comply with burdensome reporting and compliance 
obligations and be excluded from Medicare, Medicaid and other federal and state healthcare programs. If we do not 
lawfully promote our approved products, we may become subject to such litigation and, if we do not successfully 
defend against such actions, such actions may material adversely affect our business, financial condition and results 
of operations. 

The policies of the FDA or any comparable foreign regulatory authority may change and additional government 
regulations may be enacted that could prevent, limit or delay regulatory approval of our product candidates. If we 
are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if 
we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained, 
which would adversely affect our business, prospects and ability to achieve or sustain profitability. 

Our failure to obtain regulatory approval in international jurisdictions would prevent us from marketing our 
product candidates outside the United States. 

In order to market and sell our products in other jurisdictions, we or our collaboration partners must obtain separate 
marketing approvals and comply with numerous and varying regulatory requirements. The approval procedures vary 
among countries and can involve additional testing. The time required to obtain approval may differ substantially 
from that required to obtain FDA approval. The regulatory approval process outside the United States generally 
includes all the risks associated with obtaining FDA approval and may include additional risks that we cannot 
predict. In addition, in many countries outside the United States, we or our collaboration partners must secure 
product reimbursement approvals before regulatory authorities will approve a product for sale in that country. 
Obtaining foreign regulatory approvals and compliance with foreign regulatory requirements could result in 
significant delays, difficulties and costs for us and could delay or prevent the introduction of our products in certain 
countries. We may not obtain foreign regulatory approvals on a timely basis, if at all. 

For example, we are conducting the Phase 3 portion of our FIGHT trial for bemarituzumab in China in collaboration 
with Zai Lab and are relying on Zai Lab’s ability to obtain approval for bemarituzumab in China, Taiwan, Hong 
Kong and Macau, or collectively, Greater China, from the CFDA. However, Zai Lab’s ability to obtain approval in 
Greater China depends on Zai Lab’s and our ability to comply with the government policies, laws and regulations 
applicable to conducting clinical trials, obtaining approval for and commercializing drug products in Greater China. 
The government policies, laws and regulations in China are evolving rapidly and are difficult to predict. If any such 
government policies, laws or regulations in China evolve in a way that make it more difficult or inefficient for Zai 
Lab or us to clinically develop, obtain approval for or commercialize bemarituzumab in China, we may experience 
delays in initiating or conducting the FIGHT trial at our clinical trial sites in China and in fully enrolling the Phase 3 
portion of the FIGHT trial, which will delay our ability to obtain approval for and commercialize bemarituzumab.

41

Further, results and data from clinical trials conducted in one country may not be accepted by regulatory authorities 
in other countries, and regulatory approval in one country or by one regulatory authority outside the United States 
does not ensure approval by regulatory authorities in any other country or jurisdiction or by the FDA, while a failure 
or delay in obtaining regulatory approval for any of our product candidates in one country may have a negative 
effect on the regulatory approval process in other countries and may significantly diminish the commercial prospects 
of that product candidate, which may cause our business prospects to decline. Also, regulatory approval for any of 
our product candidates may be withdrawn. If we fail to comply with the regulatory requirements in international 
markets and receive applicable marketing approvals, our target market for our product candidates will be reduced, 
our ability to realize the full market potential of our product candidates will be harmed and our business will be 
adversely affected. 

We face substantial competition, which may result in others discovering, developing or commercializing products 
before or more successfully than we do. 

The biotechnology industry is intensely competitive and subject to rapid and significant technological change. We 
face competition from major pharmaceutical companies, specialty pharmaceutical companies and biotechnology 
companies worldwide with respect to our current product candidates and will face such competition with respect to 
our future product candidates. Many of our competitors have significantly greater financial, technical and human 
resources than we do. Smaller and early-stage companies may also prove to be significant competitors, particularly 
through their collaborative arrangements with large and established companies. 

Our competitors may obtain regulatory approval of their products more rapidly than we may or may obtain patent 
protection or other intellectual property rights that limit our ability to develop or commercialize our product 
candidates. Our competitors may also develop drugs that are more effective, more convenient, more widely used or 
less costly or have better safety profiles than our products and may also be more successful than us in manufacturing 
and marketing their products. 

Our competitors also currently and will in the future compete with us in recruiting and retaining qualified personnel, 
establishing clinical trial sites and enrolling patients in clinical trials, as well as in acquiring technologies 
complementary to, or necessary for, our research and development programs. 

Although there are no approved therapies that specifically target the signaling pathways that our product candidates 
are designed to modulate or inhibit, there are numerous currently-approved therapies for treating the same diseases 
or indications for which our product candidates may be useful and many of these currently-approved therapies act 
through mechanisms similar to those of our product candidates. Many of these approved drugs are well-established 
therapies or products and are widely accepted by physicians, patients and third-party payors. Some of these drugs 
are branded and subject to patent protection and others are available on a generic basis. Insurers and other third-
party payors may also encourage the use of generic products or specific branded products. We expect that if our 
product candidates are approved, they will be priced at a significant premium over competitive generic, including 
branded generic, products. This may make it difficult for us to differentiate our products from currently-approved 
therapies, which may adversely impact our business strategy. In addition, many companies are developing new 
therapeutics and we cannot predict what the standard of care will be as our product candidates progress through 
clinical development. 

If cabiralizumab were approved for the treatment of cancer or PVNS, it could face competition from products 
currently in development as single agents or in combination with anti-PD1/PD-L1 agents or other immuno-oncology 
agents, including Roche’s emactuzumab (RO5509554, RG7155) anti-CSF1R antibody, Eli Lilly and Company’s 
LY3022855 (IMC-CS4) anti-CSF1R antibody, Amgen Inc.’s AMG 820 anti-CSF1R antibody, Syndax 
Pharmaceuticals Inc.’s SNDX6352 anti-CSF1R monoclonal antibody, Pfizer Inc.’s, or Pfizer’s, PD-0360324 CSF1 
monoclonal antibody, Novartis Pharmaceuticals Corporation’s, or Novartis’, BLZ945 CSF1R-directed small 
molecule and MCS110 CSF1 monoclonal antibody, Daiichi Sankyo’s pexidartinib (PLX3397), PLX73086 and 
PLX7486 small molecule tyrosine kinase inhibitors, or TKIs, Array Biopharma Inc.’s ARRY-382 CSF1R small 
molecule TKI or Deciphera Pharmaceuticals LLC’s DCC-3014 CSF1R small molecule TKI, with respect to cancer, 
and Daiichi Sankyo’s pexidartinib (PLX3397) and PLX73086 small molecule TKIs or Novartis’ MCS110 CSF1 
monoclonal antibody, with respect to PVNS, each of which act in the same pathway as cabiralizumab. 

42

If bemarituzumab were approved for the treatment of gastric and GEJ cancer, it could face competition from 
currently-approved and marketed products, including 5-fluorouracil, S-1, capecitabine, doxorubicin, cisplatin, 
oxaliplatin, carboplatin, paclitaxel, irinotecan, docetaxel and CyramzaTM (ramucirumab), and from products 
currently in early development, including AstraZeneca plc’s AZD-4547 and erdafitinib (JNJ-42756493) pan-FGFR 
small molecules and Daiichi Sankyo’s DS-1123 FGFR2 non isoform specific antibody, as well as antibodies that 
bind to PD-1/PD-L1, including BMS’s Opdivo monotherapy and Opdivo in combination with BMS’s Yervoy® 
(ipilimumab) anti-CTLA-4 antibody, Merck & Co., Inc.’s Keytruda® (pembrolizumab), Merck KGaA, Darmstadt, 
Germany/Pfizer’s Bavencio® (avelumab), Roche’s Tecentriq® (atezolizumab), AstraZeneca UK 
Limited/MedImmune, LLC’s ImfinziTM (durvalumab) anti-PD-L1 antibody, Astellas Pharma Inc.’s claudiximab 
(IMAB362) anti-Claudin 18.2 antibody and AstraZeneca UK Limited/MedImmune, LLC’s tremelimumab anti-
CTLA4 antibody.

If FPA150 were approved for the treatment of cancer, it could face competition from currently-approved and 
marketed products, including cisplatin, carboplatin, gemcitabine, doxorubicin, paclitaxel, topotecan, Avastin® 
(bevacizumab), Abraxane® (paclitaxel protein-bound), Xeloda® (capecitabine), Navelbine® (vinorelbine), and 
Halaven® (eribulin mesylate), and from antibodies that bind to PD-1/PD-L1, including BMS’s Opdivo monotherapy 
and Opdivo in combination with BMS’s Yervoy® (ipilimumab) anti-CTLA-4 antibody, Merck & Co., Inc.’s 
Keytruda® (pembrolizumab), Merck KGaA, Darmstadt, Germany/Pfizer’s Bavencio® (avelumab), Roche’s 
Tecentriq® (atezolizumab), AstraZeneca UK Limited/MedImmune, LLC’s ImfinziTM (durvalumab), and AstraZeneca 
UK Limited/MedImmune, LLC’s tremelimumab anti-CTLA4 antibody, as well as small molecule poly ADP-ribose 
polymerase inhibitors, including AstraZeneca UK Limited’s Lynparza® (olaparib), Tesaro, Inc.’s Zejula® (niraparib), 
Clovis Oncology, Inc.’s Rubraca® (rucaparib), Pfizer’s talazoparib and AbbVie Inc.’s veliparib.

We believe that our ability to successfully compete will depend on, among other things: 

•

•

•

•

the efficacy and safety profile of our product candidates, including relative to marketed products and 
product candidates in development by third-parties; 

the time it takes for our product candidates to complete clinical development and receive marketing 
approval; 

our or our partners’ ability to commercialize any of our product candidates that receive regulatory 
approval; 

the price of our products, including in comparison to branded or generic competitors; 

• whether coverage and adequate levels of reimbursement are available under private and governmental 

health insurance plans, including Medicare; 

•

•

•

our ability to establish, maintain and protect intellectual property rights related to our product candidates; 

our and our partners’ ability to manufacture commercial quantities of any of our product candidates that 
receive regulatory approval; and 

acceptance of any of our product candidates that receive regulatory approval by physicians and other 
healthcare providers. 

43

Our product candidates may not achieve adequate market acceptance among physicians, patients, healthcare 
payors and others in the medical community necessary for commercial success. 

Even if our product candidates receive regulatory approval, they may not gain adequate market acceptance among 
physicians, patients, healthcare payors and others in the medical community. Our commercial success also depends 
on coverage and adequate reimbursement of our product candidates by third-party payors, including government 
payors, generally, which may be difficult or time-consuming to obtain, may be limited in scope and may not be 
obtained in all jurisdictions in which we may seek to market our products. The degree of market acceptance of any 
of our approved product candidates will depend on numerous factors, including: 

•

•

•

•

•

•

•

•

•

•

•

the efficacy and safety profile of the product candidate, as demonstrated in clinical trials; 

acceptance of the product candidate as a safe and effective treatment by physicians, clinics and patients;

the timing of market introduction of the product candidate as well as competitive products; 

the clinical indications for which the product candidate is approved; 

the potential and perceived advantages of the product candidate over alternative treatments, including any 
similar generic treatments; 

the cost of treatment in relation to alternative treatments; 

the availability of coverage and adequate reimbursement and pricing by third-parties and government 
authorities; 

relative convenience and ease of administration; 

the frequency and severity of adverse events; 

the effectiveness of sales and marketing efforts; and 

unfavorable publicity relating to the product candidate. 

If any product candidate is approved but does not achieve an adequate level of acceptance by physicians, hospitals, 
healthcare payors and patients, we may not generate or derive sufficient revenue from that product candidate and 
may not become or remain profitable. 

Even if we commercialize any of our product candidates, our product candidates may become subject to 
unfavorable pricing regulations, third-party reimbursement practices or healthcare reform initiatives, which 
could harm our business. 

The regulations that govern marketing approvals, pricing and reimbursement for new drug products vary widely 
from country to country. Current and future legislation may significantly change the approval requirements in ways 
that could involve additional costs and cause delays in obtaining approvals. Some countries require approval of the 
sale price of a drug before it can be marketed. In many countries, the pricing review period begins after marketing or 
product licensing approval is granted. In some foreign markets, prescription pharmaceutical pricing remains subject 
to continuing governmental control even after initial approval is granted. As a result, we might obtain marketing 
approval for a product in a particular country, but then be subject to price regulations that delay our commercial 
launch of the product, possibly for lengthy time periods, which could negatively impact the revenues we generate 
from the sale of the product in that particular country. Adverse pricing limitations may hinder our ability to recoup 
our investment in one or more product candidates, even if those product candidates obtain marketing approval. 

44

Our ability to commercialize any products successfully will also depend in part on the extent to which coverage and 
adequate reimbursement for these products and related treatments will be available from government health 
administration authorities, private health insurers and other organizations. Government authorities and other third-
party payors, such as private health insurers and health maintenance organizations, determine which medications 
they will cover and establish reimbursement levels. Government authorities and other third-party payors have 
attempted to control costs by limiting coverage and reimbursement of medications. Increasingly, third-party payors 
are requiring that pharmaceutical companies provide them with predetermined discounts from list prices and are 
challenging the prices charged for medical products. We cannot be sure that coverage and reimbursement will be 
available for any product that we commercialize and, if reimbursement is available, what the level of reimbursement 
will be. Coverage and reimbursement may impact the demand for, or the price of, any product candidate for which 
we obtain marketing approval. If coverage and reimbursement are not available or reimbursement is available only 
to limited levels, we may not successfully commercialize any product candidate for which we obtain marketing 
approval. 

There may be significant delays in obtaining coverage and reimbursement for newly approved drugs, and coverage 
may be more limited than the purposes for which the drug is approved by the FDA or comparable foreign regulatory 
authorities. Moreover, eligibility for coverage and reimbursement does not imply that a drug will be paid for in all 
cases or at a rate that covers our costs, including research, development, manufacture, sale and distribution. Interim 
reimbursement levels for new drugs, if applicable, may also not be sufficient to cover our costs and may only be 
temporary. Reimbursement rates may vary depending on the use of the drug and the clinical setting in which it is 
used, may be based on reimbursement levels already set for lower cost drugs and may be incorporated into existing 
payments for other services. Net prices for drugs may be reduced by mandatory discounts or rebates required by 
government healthcare programs or private payors and by any future relaxation of laws that presently restrict 
imports of drugs from countries where they may be sold at lower prices than in the United States. Our inability to 
promptly obtain coverage and profitable reimbursement rates from both government-funded and private payors for 
any of our approved products could have a material adverse effect on our operating results, our ability to raise 
capital needed to commercialize products and our overall financial condition. 

Enacted and future legislation may increase the difficulty and cost for us to commercialize our product 
candidates and affect the prices we may charge for such product candidates. 

The United States and many foreign jurisdictions have enacted or proposed legislative and regulatory changes 
affecting the healthcare system that could prevent or delay marketing approval of our product candidates, restrict or 
regulate post-approval activities and affect our ability to profitably sell any product for which we obtain marketing 
approval. 

In March 2010, Congress enacted the Patient Protection and Affordable Care Act, as amended by the Health Care 
and Education Reconciliation Act of 2010, or collectively the Affordable Care Act, which includes measures that 
have significantly changed the way healthcare is financed by both governmental and private insurers. Some of the 
provisions of the Affordable Care Act have yet to be implemented, and there have been judicial and congressional 
challenges to certain aspects of the Affordable Care Act. Since January 2017, President Trump has signed two 
Executive Orders designed to delay the implementation of certain provisions of the Affordable Care Act or 
otherwise circumvent some of the requirements for health insurance mandated by the Affordable Care Act. 
Concurrently, Congress has considered legislation that would repeal or repeal and replace all or part of the 
Affordable Care Act. While Congress has not passed comprehensive repeal legislation, two bills affecting the 
implementation of certain taxes under the Affordable Care Act have been signed into law. The Tax Act includes a 
provision repealing, effective January 1, 2019, the tax-based shared responsibility payment imposed by the 
Affordable Care Act on certain individuals who fail to maintain qualifying health coverage for all or part of a year 
that is commonly referred to as the “individual mandate.” Additionally, on January 22, 2018, President Trump 
signed a continuing resolution on appropriations for fiscal year 2018 that delayed the implementation of certain 
Affordable Care Act-mandated fees, including the so-called “Cadillac” tax on certain high cost employer-sponsored 
insurance plans, the annual fee imposed on certain health insurance providers based on market share, and the 
medical device excise tax on non-exempt medical devices. Congress will likely consider other legislation to replace 
elements of the Affordable Care Act. We continue to evaluate the effect that the Affordable Care Act and its 
possible repeal and replacement has on our business.

45

In addition, other legislative changes have been proposed and adopted since the Affordable Care Act was enacted. 
For example, in August 2011, then-President Obama signed into law the Budget Control Act of 2011, which, among 
other things, created the Joint Select Committee on Deficit Reduction to recommend to Congress proposals in 
spending reductions. The Joint Select Committee on Deficit Reduction did not achieve a targeted deficit reduction, 
which triggered the legislation’s automatic reduction to several government programs. This includes aggregate 
reductions to Medicare payments to providers of, on average, 2% per fiscal year through 2025 unless Congress takes 
additional action. Recently, there has been increasing legislative and enforcement interest in the United States with 
respect to specialty drug pricing practices. Specifically, there have been several recent U.S. congressional inquiries 
and proposed bills designed to, among other things, bring more transparency to drug pricing, reduce the cost of 
prescription drugs under Medicare, review the relationship between pricing and manufacturer patient programs and 
reform government program reimbursement methodologies for drugs. At the state level, legislatures are increasingly 
passing legislation and implementing regulations designed to control pharmaceutical and biological product pricing, 
including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing 
cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other 
countries and bulk purchasing.

We expect that the healthcare reform measures that have been adopted and may be adopted in the future may result 
in more rigorous coverage criteria and in additional downward pressure on the price that we receive for any 
approved product and could seriously harm our future revenues. Any reduction in reimbursement from Medicare or 
other government programs may result in a similar reduction in payments from private payors. The implementation 
of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain 
profitability or commercialize our products. 

We may become subject to product liability lawsuits, which could cause us to incur substantial liabilities and may 
limit commercialization of any products we may develop. 

We face an inherent risk of product liability exposure related to the testing of our product candidates in human 
clinical trials and will face an even greater risk if we commercially sell any products that we may develop. Product 
liability claims may be brought against us by subjects enrolled in our clinical trials, patients, healthcare providers or 
others using, administering or selling our products. If we cannot successfully defend ourselves against claims that 
our product candidates or products that we may develop caused injuries, we could incur substantial liabilities. 
Regardless of merit or eventual outcome, liability claims may result in: 

•

•

•

decreased demand for our product candidates or any products that we may develop; 

termination of clinical trials at particular sites or entire clinical trial programs; 

injury to our reputation and significant negative media attention; 

• withdrawal of clinical trial participants; 
•

significant costs to defend the related litigation; 

•

•

•

•

substantial monetary awards payable to clinical trial subjects or patients; 

loss of revenue; 

diversion of management and scientific resources from our business operations; and 

the inability to commercialize any products that we may develop. 

46

We currently hold $10 million in clinical trial liability insurance coverage, which may not adequately cover all 
liabilities that we may incur. We may not be able to maintain insurance coverage at a reasonable cost or in an 
amount adequate to satisfy any liability that may arise. We intend to expand our product liability insurance coverage 
to include the sale of commercial products if we obtain marketing approval for our product candidates in 
development, but we may be unable to obtain product liability insurance on commercially reasonable terms for any 
of our products that have been approved for marketing. Large judgments have been awarded in class action lawsuits 
based on drugs that had unanticipated side effects. A successful product liability claim or series of claims brought 
against us, particularly if judgments exceed our insurance coverage, could decrease our cash and adversely affect 
our business. 

Our relationships with customers and third-party payors will be subject to applicable anti-kickback, fraud and 
abuse, transparency, privacy and other healthcare laws and regulations, which could expose us to criminal 
sanctions, civil penalties, contractual damages, reputational harm, administrative burdens and diminished profits 
and future earnings. 

Healthcare providers, physicians and third-party payors will play a primary role in the recommendation and 
prescription of any product candidates for which we obtain marketing approval. Our future arrangements with third-
party payors and customers may expose us to broadly applicable fraud and abuse and other healthcare laws and 
regulations that may constrain the business or financial arrangements and relationships through which we market, 
sell and distribute our products that have received marketing approval. Restrictions under applicable federal and 
state healthcare laws and regulations include the following: 

•

•

•

the federal Anti-Kickback Statute prohibits any person or entity from, among other things, knowingly and 
willfully soliciting, offering, receiving or providing remuneration, directly or indirectly, in cash or in 
kind, to induce or reward, or in return for, the referral of an individual for the furnishing or arranging for 
the furnishing, or the purchase, lease or order, or arranging for or recommending purchase, lease or order, 
of any good or service for which payment may be made under a federal healthcare program such as 
Medicare or Medicaid; 

the federal false claims laws, including the civil False Claims Act (which can be enforced by private 
citizens through whistleblower or qui tam actions), impose civil and criminal penalties against individuals 
or entities for knowingly presenting, or causing to be presented, to the federal government claims for 
payment that are false or fraudulent or making a false statement to avoid, decrease or conceal an 
obligation to pay money to the federal government; 

the federal Health Insurance Portability and Accountability Act of 1996, as amended by the Health 
Information Technology for Economic and Clinical Health Act of 2009, and its implementing regulations, 
or collectively, HIPAA, imposes criminal liability for knowingly and willfully executing a scheme to 
defraud any healthcare benefit program, knowingly and willfully embezzling or stealing any money or 
other assets of a health care benefit program, willfully obstructing a criminal investigation of a healthcare 
fraud offense or knowingly and willfully making false statements relating to healthcare matters; 

• HIPAA also imposes obligations on certain covered entity health care providers, health plans and health 
care clearinghouses as well as their business associates that perform certain services involving the use or 
disclosure of individually identifiable health information, including mandatory contractual terms, with 
respect to safeguarding the privacy, security and transmission of individually identifiable health 
information; 

•

the federal Open Payments program requires manufacturers of drugs, devices, biologics or medical supplies 
for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program (with 
certain exceptions) to report annually to the U.S. Department of Health and Human Services information 
related to “payments or other transfers of value” made to physicians (defined to include doctors, dentists, 
optometrists, podiatrists and chiropractors) and teaching hospitals, as well as ownership and investment 
interests held by physicians (as defined above) and their immediate family members; and 

47

•

analogous state and foreign laws and regulations impose similar restrictions to those described above, 
such as state anti-kickback and false claims laws, which may apply to sales or marketing arrangements 
and claims involving healthcare items or services reimbursed by non-governmental third-party payors, 
including private insurers; state and foreign laws that require pharmaceutical companies to comply with 
the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance 
promulgated by the federal government or otherwise restrict payments that may be made to healthcare 
providers; state and foreign laws that require drug manufacturers to report information related to 
payments and other transfers of value to physicians and other healthcare providers or marketing 
expenditures; and state and foreign laws that govern the privacy and security of health information in 
certain circumstances, many of which differ from each other in significant ways and often are not 
preempted by or are in conflict with HIPAA, including the EU General Data Protection Regulation, or 
GDPR, which will become enforceable on May 25, 2018, and imposes privacy and security obligations on 
any entity that collects or processes health data from individuals located in the EU. Under the GDPR, fines 
of up to 20 million euros or up to 4% of the annual global turnover of the infringer, whichever is greater, 
could be imposed for significant non-compliance. As well as complicating our compliance efforts, non-
compliance with these laws could result in penalties or significant legal liability. 

Efforts to ensure that our business arrangements with third-parties will comply with applicable healthcare laws and 
regulations will involve substantial costs. It is possible that governmental authorities will conclude that our business 
practices do not comply with current or future statutes, regulations or case law interpreting applicable fraud and 
abuse or other healthcare laws and regulations. If our operations are found to be in violation of any of these laws or 
any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and 
administrative penalties, damages, fines, imprisonment, exclusion from government-funded healthcare programs, 
such as Medicare and Medicaid, additional reporting requirements and oversight if we become subject to a corporate 
integrity agreement or similar agreement to resolve allegations of non-compliance with these laws, reputational 
harm and the curtailment or restructuring of our operations. If any physician or other healthcare provider or entity 
with whom we expect to do business is found to have violated applicable laws, that person or entity may be subject 
to criminal, civil or administrative sanctions, including exclusions from government-funded healthcare programs. 

We must attract and retain highly skilled employees to succeed. 

We are experiencing significant growth in our operations as we expand the scope of our research and clinical 
activities, including our conduct of a Phase 2 clinical trial of cabiralizumab in PVNS, a Phase 1a/1b clinical trial of 
cabiralizumab in combination with Opdivo in multiple cancers, clinical trials, including  our FIGHT trial, of 
bemarituzumab in gastric and GEJ cancer, a Phase 1a/1b clinical trial of FPA150 in multiple cancers and our 
preclinical development and immuno-oncology research activities. Our success will depend in part on our ability to 
manage our growth, including increases to our headcount, effectively. To succeed, we must continue to recruit, 
develop, retain, manage and motivate qualified clinical, scientific, technical and management personnel while facing 
significant competition for experienced personnel. If we do not successfully attract and retain qualified personnel, 
particularly at the management level, it could adversely affect our ability to execute our business plan and harm our 
operating results. In particular, the loss of one or more of our executive officers could be detrimental to us if we 
cannot recruit suitable replacements in a timely manner. The competition for qualified personnel in the 
pharmaceutical field is intense and we may be unable to continue to attract and retain qualified personnel necessary 
for the development of our business or to recruit suitable replacement personnel. 

Many of the other pharmaceutical companies against which we compete for qualified personnel have greater 
financial and other resources, different risk profiles and a longer history in the industry than we do. They also may 
provide more diverse opportunities and better chances for career advancement. Some of these characteristics may 
appeal more to high-quality candidates than what we offer. If we are unable to continue to attract and retain high-
quality personnel, the rate at which we can discover and develop product candidates and our business, and our 
success in doing so, will be limited. 

48

Our operations are vulnerable to interruption by fire, earthquake, power loss, telecommunications failure, 
terrorist activity, political and economic instability in the countries in which we operate and other events beyond 
our control, which could harm our business. 

Our computer and other systems, or those of our partners, CROs or other service providers, may fail or be 
interrupted, including due to fire, earthquake or other natural disasters, hardware, software, telecommunication or 
electrical failures or terrorism, or suffer security breaches, including due to computer viruses or unauthorized access, 
which could significantly disrupt or harm our business or operations. For example, a computing system failure could 
result in the loss of research or preclinical or clinical data important to our discovery, research or development 
programs, interrupt the conduct of ongoing experiments or otherwise impair our ability to operate, which could 
result in delays in the advancement of our programs or cause us to incur costs to recover or reproduce lost data. Our 
facility is in a seismically-active region. We have not undertaken a systematic analysis of the potential consequences 
to our business and financial results from a major earthquake, fire, power loss, terrorist activity or other disaster and 
do not have a recovery plan for such disasters. In addition, we do not carry sufficient insurance to compensate us for 
actual losses from interruption of our business that may occur and any losses or damages incurred by us could harm 
our business. We maintain multiple copies of each of our protein libraries, most of which we maintain at our 
headquarters. We maintain one copy of each of our protein libraries offsite in Central California. If both facilities 
were impacted by the same event, we could lose all our protein libraries, which would have a material adverse effect 
on our ability to discover new targets. 

Risks Related to Our Dependence on Third-Parties 

BMS has exclusive global rights for the development and commercialization of cabiralizumab, and Zai Lab has 
exclusive rights for the development and commercialization of bemarituzumab in Greater China. BMS or Zai 
Lab’s failure to timely develop or commercialize cabiralizumab or bemarituzumab, respectively, would have a 
material adverse effect on our business and operating results. 

We granted BMS an exclusive global license to develop and commercialize cabiralizumab, subject to certain rights 
that we retained. Additionally, we granted Zai Lab an exclusive license to develop and commercialize 
bemarituzumab in Greater China, subject to certain rights that we retained in the territory. Either or both of our 
cabiralizumab collaboration with BMS or our bemarituzumab collaboration with Zai Lab may not be successful due 
to several factors, including the following: 

•

•

•

•

•

cabiralizumab or bemarituzumab may fail to demonstrate in clinical trials sufficient efficacy with an 
acceptable safety profile to support regulatory approval; 

BMS may be unable to manufacture sufficient quantities of cabiralizumab or Zai Lab may not be able to 
obtain from us or manufacture, as applicable, bemarituzumab, in a timely or cost-effective manner; 

BMS or Zai Lab may be unable to obtain regulatory approval to commercialize cabiralizumab or 
bemarituzumab, respectively, even if preclinical and clinical testing is successful; 

BMS or Zai Lab may not succeed in obtaining sufficient reimbursement for cabiralizumab or 
bemarituzumab, respectively, if approved; and

existing or future products or technologies developed by competitors may be safer, more effective or 
more conveniently delivered to patients than cabiralizumab or bemarituzumab. 

In addition, we could be adversely affected by: 

•

•

•

BMS’s or Zai Lab’s failure to timely perform their respective obligations under our collaboration 
agreements; 

BMS’s or Zai Lab’s failure to timely or fully develop or effectively commercialize cabiralizumab or 
bemarituzumab, respectively; or 

a material contractual dispute with BMS or Zai Lab. 

49

Any of the foregoing could adversely impact the likelihood and timing of any milestone payments we are eligible to 
receive under our collaboration agreements with BMS and Zai Lab and could result in a material adverse effect on 
our business, results of operations and prospects and would likely cause our stock price to decline. 

Each of BMS and Zai Lab has the right to terminate its collaboration agreement with us without cause as well as 
upon the existence of certain conditions and, in some cases, BMS or Zai Lab may terminate on short notice. BMS or 
Zai Lab could also separately pursue alternative potentially competitive products, therapeutic approaches or 
technologies as a means of developing treatments for the diseases targeted by cabiralizumab or bemarituzumab, 
respectively. 

We may not succeed in establishing and maintaining additional development collaborations, which could 
adversely affect our ability to develop and commercialize product candidates. 

A part of our strategy is to enter into additional product development collaborations, including collaborations with 
major biotechnology or pharmaceutical companies. We face significant competition in seeking appropriate 
development partners and the negotiation process is time-consuming and complex. Moreover, we may not succeed 
in our efforts to establish a development collaboration or other alternative arrangements for any of our other existing 
or future product candidates and programs because our research and development pipeline may be insufficient, 
development of our product candidates and programs may be deemed to be too early in development for 
collaborative efforts or third-parties may not view our product candidates and programs as having the requisite 
potential to demonstrate safety and efficacy. Even if we are successful in our efforts to establish new development 
collaborations, the terms that we agree upon may not be favorable to us and we may not be able to maintain such 
development collaborations if, for example, development or approval of a product candidate is delayed or sales of an 
approved product candidate are disappointing. Any delay in entering into new development collaboration 
agreements related to our product candidates could delay the development and commercialization of our product 
candidates and reduce their competitiveness if they reach the market. 

Moreover, if we fail to establish and maintain additional development collaborations related to our product 
candidates: 

•

•

the development of certain of our current or future product candidates may be terminated or delayed; 

our cash expenditures related to development of certain of our current or future product candidates would 
increase significantly and we may need to seek additional financing; 

• we may be required to hire additional employees or otherwise develop expertise, such as sales and 

marketing expertise, for which we have not budgeted; and 

• we will bear all the risk related to the development of any such product candidates. 

We rely on third-party CROs to conduct our clinical trials, and the unsatisfactory performance by such CROs 
may harm our business. 

We rely on CROs to perform most of the activities related to the conduct of our clinical trials, including site 
identification, screening, preparation, training, initiation and monitoring, and document preparation and 
coordination, program management and data management. However, we do not directly control the conduct, timing, 
expense or quality of the performance of these activities. The performance of our CROs will impact the quality and 
validity of our clinical trial results, which we rely on for business planning purposes and include in submissions to 
regulatory authorities. Although we contract with CROs to conduct most clinical trial-related activities, we remain 
responsible for ensuring that each of our clinical trials is conducted in accordance with the applicable protocol and 
legal and regulatory requirements. Our reliance on CROs does not relieve us of our legal and regulatory 
responsibilities with respect to our clinical trials. 

50

We and our CROs are required to comply with current Good Clinical Practices, or GCP, which are regulations and 
guidelines enforced by the FDA, the Competent Authorities of the Member States of the European Economic Area 
and comparable foreign regulatory authorities for all our products in clinical development. Regulatory authorities 
enforce GCP requirements through periodic inspections of clinical trial sponsors, principal investigators and clinical 
trial sites. If we or any of our CROs fail to comply with applicable GCP, the clinical data generated in our clinical 
trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities may require us to 
perform additional clinical trials before approving our marketing applications. We cannot ensure that upon 
inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials 
comply with GCP requirements. In addition, we must conduct our clinical trials with product produced in 
accordance with cGMP requirements. Our failure, or the failure of our clinical trial sites or third-party CROs or 
contract manufacturing organizations, or CMOs, to comply with applicable GCP and cGMP may require us to repeat 
preclinical and clinical trials, which would delay the regulatory approval process. 

Our CROs are not our employees. Except for remedies available to us under our agreements with such CROs, we 
cannot control whether they devote sufficient time and resources to our ongoing clinical, nonclinical and preclinical 
programs. If our CROs do not successfully carry out their contractual duties or obligations or meet expected 
deadlines or if the quality or accuracy of the clinical data they obtain is compromised due to their failure to adhere to 
our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or 
terminated and we may not be able to obtain regulatory approval for or successfully commercialize our product 
candidates. As a result, our results of operations and the commercial prospects for our product candidates would be 
harmed, our costs could increase and our ability to generate revenues could be delayed. 

Risks Related to Intellectual Property 

If we are unable to obtain or protect intellectual property rights, we may not be able to compete effectively in our 
market. 

Our success depends in significant part on our ability and the ability of our licensors and collaborators to obtain, 
maintain and defend patents and other intellectual property rights and to operate without infringing the intellectual 
property rights of others. We have filed numerous patent applications both in the United States and in foreign 
jurisdictions to obtain patent rights to inventions we have discovered. We have also licensed patent and other 
intellectual property rights to and from our partners. Some of these licenses give us the right to prepare, file and 
prosecute patent applications and maintain and enforce patents we have licensed, whereas other licenses do not give 
us such rights. 

In some circumstances, we may not have the right to control the preparation, filing and prosecution of patent 
applications or to maintain the patents covering technology that we license to or from our partners, and we may have 
to rely on our partners to fulfill these responsibilities. Consequently, these patents and applications may not be 
prosecuted and enforced in a manner consistent with the best interests of our business. If our current or future 
licensors, licensees or collaborators fail to establish, maintain or protect such patents and other intellectual property 
rights, such rights may be reduced or eliminated. If our licensors, licensees or collaborators are not fully cooperative 
or disagree with us as to the strategy for prosecution, maintenance or enforcement of any patent rights, such patent 
rights could be compromised. 

The patent prosecution process is expensive and time-consuming. We and our current or future licensors, licensees 
or collaborators may not be able to prepare, file and prosecute all necessary or desirable patent applications at a 
reasonable cost or in a timely manner. It is also possible that we or our licensors, licensees or collaborators will fail 
to file patent applications covering inventions made in the course of development and commercialization activities 
before a competitor or another third-party files a patent application covering or publishes information disclosing a 
similar, independently-developed invention. Such competitor’s patent application may hinder our ability to obtain 
patent protection for these inventions or may limit the scope of patent protection we may obtain. 

51

The patent position of biotechnology and pharmaceutical companies generally is uncertain, involves complex legal 
and factual questions and is the subject of much litigation. As a result, the issuance, scope, validity, enforceability 
and commercial value of our and our current or future licensors’, licensees’ or collaborators’ patent rights are 
uncertain. Our and our current or future licensors’, licensees’ or collaborators’ pending and future patent 
applications may not result in patents being issued that protect our technology or products, in whole or in part, or 
which effectively exclude others from commercializing competitive technologies and products. The patent 
prosecution process may require us or our licensors, licensees or collaborators to narrow the scope of the claims of 
our pending and future patent applications, which may limit the scope of protection if patents issue from such 
applications. Our and our licensors’, licensees’ or collaborators’ rights in the technology claimed in patent 
applications cannot be enforced against third-parties practicing such technology unless and until a patent issues from 
such applications, and then only to the extent the issued claims cover such technology. 

Furthermore, because the amount of time required for the development, testing and regulatory review of new 
product candidates is lengthy, patents protecting such candidates might expire before or shortly after such candidates 
are commercialized. As a result, our owned and licensed patent portfolios may not provide us with adequate 
protection against third-parties seeking to commercialize products similar or identical to ours. We expect to request 
extensions of patent terms to the extent available in countries where we obtain issued patents. In the United States, 
the Drug Price Competition and Patent Term Restoration Act of 1984 permits a patent term extension of up to five 
years beyond the expiration of the patent. However, there are no assurances that the FDA or any comparable foreign 
regulatory authority will grant such extensions, in whole or in part. In such case, our competitors may launch their 
products earlier than might otherwise be anticipated. 

We may not be able to protect our intellectual property rights throughout the world. 

Filing, prosecuting, enforcing and defending patents covering our product candidates in all countries throughout the 
world would be prohibitively expensive, and our or our licensors’ or collaborators’ intellectual property rights in 
some countries outside the United States can be less extensive than those in the United States. Moreover, the 
requirements for patentability may differ in certain countries, particularly developing countries. For example, China 
has a heightened requirement for patentability and specifically requires a detailed description of medical uses of a 
claimed drug. Therefore, it may be more difficult to obtain patent protection in certain countries relative to others.

The laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state 
laws in the United States. Consequently, we and our licensors or collaborators may not be able to prevent third-
parties from practicing our and our licensors’ or collaborators’ inventions in certain countries outside the United 
States. Competitors may use our and our licensors’ or collaborators’ technologies in jurisdictions where we have not 
obtained patent protection to develop their own products and may export otherwise infringing products to territories 
where we and our licensors or collaborators have patent protection but enforcement is not as strong as that in the 
United States. These products may compete with our product candidates and our and our licensors’ or collaborators’ 
patents or other intellectual property rights may not be effective or sufficient to prevent them from competing. 

Many companies have encountered significant problems in protecting and defending intellectual property rights in 
foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor 
the enforcement of patents and other intellectual property rights, particularly those relating to biopharmaceuticals, 
which could make it difficult for us and our licensors or collaborators to stop the infringement of our and our 
licensors’ or collaborators’ patents or marketing of competing products in violation of our and our licensors’ or 
collaborators’ proprietary rights generally. Proceedings to enforce our and our licensors’ or collaborators’ patent 
rights in foreign jurisdictions could result in substantial costs and divert our and our licensors’ or collaborators’ 
efforts and attention from other aspects of our business, could put our and our licensors’ or collaborators’ patents at 
risk of being invalidated or interpreted narrowly and could provoke third-parties to assert counterclaims against us 
or our licensors or collaborators. We or our licensors or collaborators may not prevail in any lawsuits that we or our 
licensors or collaborators initiate and, even if we prevail, the damages or other remedies awarded, if any, may not be 
commercially meaningful. 

52

Biosimilar drug manufacturers or other competitors may challenge the scope, validity or enforceability of our or our 
licensors’ or collaborators’ patents in countries outside the United States, requiring us or our licensors or 
collaborators to engage in complex, lengthy and costly litigation or other proceedings. Biosimilar drug 
manufacturers may develop, seek approval for, and launch biosimilar versions of our products. In addition to India, 
certain countries in Europe and developing countries, including China, have compulsory licensing laws under which 
a patent owner may be compelled to grant licenses to third-parties. In those countries, we and our licensors or 
collaborators may have limited remedies if compelled to grant a license to a third-party, which could materially 
diminish the value of the applicable patents and limit our potential revenue opportunities. Accordingly, our and our 
licensors’ or collaborators’ efforts to enforce intellectual property rights around the world may be inadequate to 
obtain a significant commercial advantage from such intellectual property rights. 

Changes in patent law could diminish the value of patents in general, thereby impairing our ability to protect our 
rights in our product candidates. 

Obtaining and enforcing patents in the biopharmaceutical industry is inherently uncertain, due in part to ongoing 
changes in the patent laws. Depending on decisions by Congress, the federal courts, and the U.S. Patent and 
Trademark Office, or USPTO, the laws and regulations governing patents could change in unpredictable ways that 
could weaken our and our licensors’ or collaborators’ ability to obtain new patents or to enforce existing or future 
patents. For example, the Supreme Court has ruled on several patent cases in recent years, either narrowing the 
scope of patent protection available under certain circumstances or weakening the rights of patent owners in certain 
situations. Therefore, there is increased uncertainty with regard to our and our licensors’ or collaborators’ ability to 
obtain patents in the future, as well as uncertainty with respect to the value of patents once issued.

On September 16, 2011, the Leahy-Smith America Invents Act, or the Leahy-Smith Act, was signed into law. The 
Leahy-Smith Act includes numerous significant changes to U.S. patent law, including provisions that affect the way 
patent applications are prosecuted and may also affect patent litigation. The USPTO recently developed new 
regulations and procedures to govern administration of the Leahy-Smith Act, and many of the substantive changes to 
patent law associated with the Leahy-Smith Act, including the first-to-file provisions, only became effective on 
March 16, 2013. Accordingly, it is not clear what, if any, impact the Leahy-Smith Act will have on the operation of 
our business. However, the Leahy-Smith Act and its implementation could increase the uncertainties and costs 
surrounding the prosecution of patent applications and the enforcement or defense of issued patents controlled by us 
or our licensors or collaborators, all of which could have a material adverse effect on our business and financial 
condition. 

Obtaining and maintaining our patent protection requires compliance with various procedural, document 
submission, fee payment and other requirements imposed by governmental patent agencies, and our patent 
protection could be reduced or eliminated if we fail to comply with these requirements. 

Periodic maintenance and annuity fees on any issued patent are required to be paid to the USPTO and foreign patent 
agencies in several stages over the lifetime of the patent. The USPTO and various foreign patent agencies also 
require compliance with a number of procedural, documentary, fee payment and other similar requirements during 
the patent application and prosecution process. Non-compliance events that could result in abandonment or lapse of 
a patent or patent application include failure to respond to official communications within prescribed time limits, 
non-payment of fees and failure to properly legalize and submit formal documents. While an inadvertent lapse can 
in many cases be cured by payment of a late fee or by other means in accordance with the applicable rules, there are 
situations in which non-compliance can result in irrevocable abandonment or lapse of the patent or patent 
application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. If we or our licensors or 
collaborators fail to maintain the patents and patent applications covering our product candidates, our competitors 
might be able to enter the market, which would have a material adverse effect on our business. 

53

We may become involved in lawsuits to protect or enforce our intellectual property, which could be expensive, 
time-consuming and unsuccessful and have a material adverse effect on the success of our business. 

Third-parties may infringe our or our licensors’ or collaborators’ patents or misappropriate or otherwise violate our 
or our licensors’ or collaborators’ intellectual property rights. In the future, we or our licensors or collaborators may 
initiate legal proceedings to enforce or defend our or our licensors’ or collaborators’ intellectual property rights or to 
protect our or our licensors’ or collaborators’ trade secrets. The outcome of such proceedings may determine or alter 
the validity or scope of intellectual property rights we own or control. Also, third-parties may initiate legal 
proceedings against us or our licensors or collaborators to challenge the validity or scope of intellectual property 
rights we own or control. These proceedings can be expensive and time-consuming and many of our or our 
licensors’ or collaborators’ adversaries in these proceedings may have the ability to dedicate substantially greater 
resources to prosecuting these legal actions than we or our licensors or collaborators can. Accordingly, despite our 
or our licensors’ or collaborators’ efforts, we or our licensors or collaborators may not prevent third-parties from 
infringing or misappropriating intellectual property rights we own or control, particularly in countries where the 
laws may not protect those rights as fully as in the United States. Litigation could result in substantial costs and 
diversion of management resources, which could harm our business and financial results. In addition, in a patent 
infringement proceeding, a court may decide that a patent owned by or licensed to us is invalid or unenforceable, or 
may refuse to impose monetary damages or enjoin the other party from using the technology at issue on the grounds 
that our or our licensors’ or collaborators’ patents do not cover the technology in question. An adverse result in any 
litigation proceeding could put one or more of our or our licensors’ or collaborators’ patents at risk of being 
invalidated, held unenforceable or interpreted narrowly. 

Derivation or interference proceedings in the United States or equivalent proceedings in other jurisdictions may be 
necessary to determine the priority of inventions with respect to our or our licensors’ or collaborators’ patents or 
patent applications. An unfavorable outcome could require us or our licensors or collaborators to cease using the 
related technology and commercializing our product candidates or to attempt to license rights to it from the 
prevailing party. Our business could be harmed if the prevailing party does not offer us or our licensors or 
collaborators a license or offers a license on terms that are not commercially reasonable. Even if we or our licensors 
or collaborators obtain a license, it may be non-exclusive, giving our competitors access to the same technologies 
licensed to us or our licensors or collaborators. In addition, if the breadth or strength of protection provided by our 
or our licensors’ or collaborators’ patents and patent applications is threatened, it could dissuade companies from 
collaborating with us to license, develop or commercialize current or future product candidates. Even if we prevail 
in such a proceeding, we may incur substantial costs and it may distract our management and other employees from 
our business and operations. 

If we breach the agreements under which third-parties have licensed intellectual property rights to us, we could 
lose the ability to use certain of our technologies or continue the development and commercialization of our 
product candidates. 

Our commercial success depends upon our ability, and the ability of our licensors and collaborators, to discover and 
validate protein therapeutic targets and to identify, test, develop, manufacture, market and sell product candidates 
without infringing the proprietary rights of third-parties. A third-party may hold intellectual property rights, 
including patent rights, that are important for or necessary to the development or commercialization of our products. 
As a result, we are a party to a number of licenses that are important to our business and expect to enter into 
additional licenses in the future. For example, we have entered into a non-exclusive license with BioWa, Inc. and 
Lonza Sales AG to use their Potelligent® CHOK1SV technology, which is necessary to produce our bemarituzumab 
antibody and non-exclusive licenses with each of the National Research Council of Canada and the Board of 
Trustees of the Leland Stanford Junior University to use materials and technologies that we use in the production of 
our protein library. If we fail to comply with the obligations under these agreements, including payment and 
diligence terms, our licensors may have the right to terminate these agreements, in which event we may not be able 
to develop, manufacture, market or sell any product that is covered by these agreements or may face other 
contractual penalties. Such an occurrence could materially adversely affect the value of the product candidate being 
developed under any such agreement. Termination of, or reduction or elimination of our rights under, these 
agreements may result in our having to negotiate new or reinstated agreements, which may not be available to us on 
equally favorable terms, or at all, or cause us to lose our rights under these agreements, including our rights to 
intellectual property or technology important to our development programs. 

54

Third-parties may initiate legal proceedings against us alleging that we infringe their intellectual property rights 
or we may initiate legal proceedings against third-parties to challenge the validity or scope of intellectual property 
rights controlled by such third-parties, the outcome of which would be uncertain and could have a material 
adverse effect on the success of our business. 

Third-parties may initiate legal proceedings against us or our licensors or collaborators alleging that we or our 
licensors or collaborators infringe their intellectual property rights or we or our licensors or collaborators may 
initiate legal proceedings against third-parties to challenge the validity or scope of intellectual property rights 
controlled by third-parties, including in oppositions, interferences, reexaminations, inter partes reviews or derivation 
proceedings in the United States or other jurisdictions. These proceedings can be expensive and time-consuming and 
many of our or our licensors’ or collaborators’ adversaries in these proceedings may have the ability to dedicate 
substantially greater resources to prosecuting these legal actions than we or our licensors or collaborators can. 

An unfavorable outcome could require us or our licensors or collaborators to cease using the relevant technology or 
developing or commercializing our product candidates, or to attempt to license any necessary rights to such 
technology from the prevailing party. Our business could be harmed if the prevailing party does not offer us or our 
licensors or collaborators a license, or otherwise offers a license on terms that are not commercially reasonable. 
Even if we or our licensors or collaborators obtain a license, it may be non-exclusive, thereby giving our competitors 
access to the same technologies licensed to us or our licensors or collaborators. In addition, we could be found liable 
for monetary damages if we are found to have infringed a patent, including treble damages and attorneys’ fees if such 
infringement was willful. A finding of infringement could prevent us from commercializing our product candidates or 
force us to cease some of our business operations, which could materially harm our business. 

Furthermore, because of the substantial amount of discovery required in intellectual property litigation, there is a 
risk that some of our confidential information could be compromised by disclosure during the course of this type of 
litigation. There could also be public announcements of the results of hearings, motions or other interim proceedings 
or developments and if securities analysts or investors perceive these results to be negative, the price of shares of our 
common stock may be materially adversely affected. 

We may be subject to claims by third-parties asserting that we or our employees have misappropriated their 
intellectual property or claiming ownership of what we regard as our own intellectual property. 

Many of our employees, including our senior management, were previously employed at universities or at other 
biotechnology or pharmaceutical companies, including our competitors or potential competitors. Some of these 
employees executed proprietary rights, non-disclosure and non-competition agreements in connection with such 
previous employment. Although we try to ensure that our employees do not use the proprietary information or 
know-how of others in their work for us, we may be subject to claims that we or our employees have used or 
disclosed confidential information or intellectual property, including trade secrets or other proprietary information, 
of any such employee’s former employer. Litigation may be necessary to defend against these claims. 

If we fail in defending against any such claims, in addition to paying monetary damages, we may lose valuable 
intellectual property rights or personnel or sustain damages. Such intellectual property rights could be determined to 
be owned by a third-party, and we could be required to obtain a license from such third-party to commercialize our 
technology or products. Such a license may not be available or may not be available on commercially reasonable 
terms. Even if we successfully defend against such claims, litigation could result in substantial costs and distract 
management. 

55

Our inability to protect our confidential information and trade secrets would harm our business and competitive 
position. 

In addition to seeking patents for some of our technology and products, we also rely on trade secrets, including 
unpatented know-how, technology and other proprietary information, to maintain our competitive position. We seek 
to protect these trade secrets, in part, by entering into non-disclosure and confidentiality agreements with parties 
who have access to them, such as our employees, corporate collaborators, outside scientific collaborators, contract 
manufacturers, consultants, advisors and other third-parties. We also enter into confidentiality and invention, 
including patent, assignment agreements with our employees and consultants. Despite these efforts, any of these 
parties, including their current or former employees or consultants, may breach the agreements and disclose our 
proprietary information, including our trade secrets, and we may not be able to obtain adequate remedies for such 
breaches. However, enforcing a claim that a party illegally disclosed or misappropriated a trade secret is difficult, 
expensive and time-consuming, and the outcome of such a claim is unpredictable. In addition, some courts both 
within and outside the United States may be less willing or unwilling to protect trade secrets. If a competitor 
lawfully obtained or independently developed any of our trade secrets, we would have no right to prevent such 
competitor from using that trade secret to compete with us, which could harm our competitive position. 

Risks Related to the Ownership of Our Common Stock 

The market price of our stock may be volatile. 

The trading price of our common stock has been and is likely to continue to be volatile. Since shares of our common 
stock were sold in our IPO in September 2013, our closing stock price as reported on The Nasdaq Global Market 
and The Nasdaq Global Select Market has ranged from $8.49 to $60.98 through February 26, 2018. The following 
factors, in addition to other risk factors described in this section and elsewhere in this report, may have a significant 
impact on the market price of our common stock: 

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

results or status of or plans for clinical trials of our product candidates or those of our competitors, as well 
as interpretation and perception of such results by third-parties; 

announcements by us, our partners or our competitors of significant acquisitions, strategic collaborations, 
joint ventures, collaborations or capital commitments; 

the success of competitive products or technologies; 

regulatory actions with respect to our products or our competitors’ products; 

actual or anticipated changes in our or our partners’ growth rates relative to our competitors; 

failure of our partners to effectively execute or changes in our partners’ strategies with respect to our 
products or collaborations;

regulatory or legal developments in the United States and other countries; 

developments or disputes concerning patent applications, issued patents or other proprietary rights; 

our dependence on third-parties, including contract manufacturers, CROs and any partners we may 
engage to develop and provide us with companion diagnostic products;

the recruitment or departure of key personnel; 

the level of expenses related to any of our product candidates or clinical development programs; 

the results of our efforts to in-license or acquire additional product candidates or products; 

actual or anticipated changes in estimates as to financial results, development timelines or 
recommendations by securities analysts; 

variations in our financial results or those of companies that are perceived to be similar to us; 

fluctuations in the valuation of companies perceived by investors to be comparable to us; 

56

•

•

•

•

share price and volume fluctuations attributable to inconsistent trading volume levels of our shares; 

announcements or expectations of additional financing efforts; 

sales of our common stock by us, our insiders or our other stockholders; 

changes in the structure of healthcare payment systems; 

• market conditions in the pharmaceutical and biotechnology sectors; and 
•

general economic, industry, political and market conditions. 

In addition, the stock market in general, and The Nasdaq Global Select Market and biotechnology companies, in 
particular, have experienced extreme price and volume fluctuations that have often been unrelated or 
disproportionate to the operating performance of these companies. Broad market and industry factors may 
negatively affect the market price of our common stock, regardless of our actual operating performance. The 
realization of any of the above risks or any of a broad range of other risks, including those described in this “Risk 
Factors” section, could have a dramatic and material adverse impact on the market price of our common stock. 

We may be subject to securities litigation, which is expensive and could divert management attention. 

The market price of our common stock may be volatile, and in the past, companies that have experienced volatility 
in the market price of their stock have been subject to securities class action litigation. We may be the target of this 
type of litigation in the future. Securities litigation against us could result in substantial costs and divert our 
management’s attention from other business concerns, which could seriously harm our business. 

Our principal stockholders and management own a significant percentage of our stock and may be able to exert 
significant control over matters subject to stockholder approval. 

As of December 31, 2017, we estimate that our executive officers, directors, holders of 5% or more of our capital 
stock and their respective affiliates beneficially owned approximately 50% of our common stock. This concentration 
of share ownership may adversely affect the trading price of our common stock because investors often perceive 
disadvantages in owning stock in companies with controlling stockholders. As a result, these stockholders, acting 
together, could significantly influence all matters requiring approval by our stockholders, including the election of 
directors and the approval of mergers or other business combination transactions. The interests of these stockholders 
may not always coincide with our interests or the interests of other stockholders. 

Sales of a substantial number of shares of our common stock in the public market by our existing stockholders 
could cause our stock price to fall. 

Sales of a substantial number of shares of our common stock in the public market or the perception that these sales 
might occur could depress the market price of our common stock and could impair our ability to raise capital 
through the sale of additional equity securities. We are unable to predict the effect that sales may have on the 
prevailing market price of our common stock. 

Our disclosure controls and procedures may not prevent or detect all errors or acts of fraud. 

We are subject to the periodic reporting requirements of the Exchange Act. We designed our disclosure controls and 
procedures to reasonably assure that information we must disclose in reports we file or submit under the Exchange 
Act is accumulated and communicated to management, and recorded, processed, summarized and reported within 
the time periods specified in the rules and forms of the SEC. We believe that any disclosure controls and procedures 
or internal controls and procedures, no matter how well-conceived and operated, can provide only reasonable, not 
absolute, assurance that the objectives of the control system are met. 

These inherent limitations include the realities that judgments in decision-making can be faulty, and that 
breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the 
individual acts of some persons, by collusion of two or more people or by an unauthorized override of the controls. 
Accordingly, because of the inherent limitations in our control system, misstatements due to error or fraud may 
occur and not be detected. 

57

Some provisions of our charter documents and Delaware law may have anti-takeover effects that could 
discourage an acquisition of us by others, even if an acquisition would benefit our stockholders, and may prevent 
attempts by our stockholders to replace or remove our current management. 

Provisions in our amended and restated certificate of incorporation and amended and restated bylaws, as well as 
provisions of Delaware law, could make it more difficult or costly for a third-party to acquire us, even if doing so 
would benefit our stockholders, and could make it more difficult to remove our current management. These 
provisions include: 

•

•

•

•

•

authorizing the issuance of “blank check” preferred stock, the terms of which we may establish and shares 
of which we may issue without stockholder approval; 

prohibiting cumulative voting in the election of directors, which would otherwise allow for less than a 
majority of stockholders to elect director candidates; 

prohibiting stockholder action by written consent, thereby requiring all stockholder actions to be taken at 
a meeting of our stockholders; 

eliminating the ability of stockholders to call a special meeting of stockholders; and 

establishing advance notice requirements for nominations for election to the board of directors or for 
proposing matters that can be acted upon at stockholder meetings. 

These provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current 
management by making it more difficult for stockholders to replace members of our board of directors, who are 
responsible for appointing the members of our management. Because we are incorporated in Delaware, we are 
governed by the provisions of Section 203 of the General Corporation Law of the State of Delaware, or the DGCL, 
which may discourage, delay or prevent someone from acquiring us or merging with us whether or not it is desired 
by or beneficial to our stockholders. Under the DGCL, a corporation may not, in general, engage in a business 
combination with any holder of 15% or more of its capital stock unless the holder has held the stock for three years 
or, among other things, the board of directors has approved the transaction. Any provision of our amended and 
restated certificate of incorporation or amended and restated bylaws or Delaware law that has the effect of delaying 
or deterring a change of control could limit the opportunity for our stockholders to receive a premium for their 
shares of our common stock, and could also affect the price that some investors are willing to pay for our common 
stock. 

58

Item 1B. Unresolved Staff Comments. 

None. 

Item 2. Properties. 

Our principal executive office is currently located in South San Francisco, California, and consists of 115,466 square 
feet of office and laboratory space, all of which is located in a single building, under a lease that expires on 
December 31, 2027. We believe that our existing facility is sufficient for our current needs. 

Item 3. Legal Proceedings. 

We are not currently subject to any material legal proceedings. 

Item 4. Mine Safety Disclosures. 

None. 

59

PART II 

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of 
Equity Securities. 

Market Information 

Our common stock is traded on The Nasdaq Global Select Market under the symbol “FPRX.” The following table 
sets forth the high and low intraday sale prices per share of our common stock for the periods indicated as reported 
by the Nasdaq Global Select Market. 

Years Ended December 31, 2017
First Quarter ..................................................................   $
Second Quarter..............................................................    
Third Quarter.................................................................    
Fourth Quarter...............................................................    

Years Ended December 31, 2016
First Quarter ..................................................................   $
Second Quarter..............................................................    
Third Quarter.................................................................    
Fourth Quarter...............................................................    

High

Low

52.98   $
37.15    
41.36    
48.87    

34.71 
26.65 
25.97 
19.73 

High

Low

41.84   $
50.11    
55.00    
60.98    

28.01 
37.03 
41.13 
45.23  

As of February 20, 2018, we had 34,860,499 shares of common stock outstanding held by approximately 30 
stockholders of record. The actual number of stockholders is greater than this number of record holders, and 
includes stockholders who are beneficial owners, but whose shares are held in street name by brokers and other 
nominees. This number of holders of record also does not include stockholders whose shares may be held in trust by 
other entities. 

Dividend Policy 

We have never declared or paid any cash dividends on our capital stock and do not anticipate paying any cash 
dividends in the foreseeable future. Payment of cash dividends, if any, in the future will be at the discretion of our 
board of directors and will depend on then-existing conditions, including our financial condition, operating results, 
contractual restrictions, capital requirements, business prospects and other factors our board of directors may deem 
relevant.

60

  
 
 
  
 
   
 
    
 
 
 
     
      
 
 
 
  
 
   
 
    
 
 
  
Stock Performance Graph 

The following graph illustrates a comparison of the total cumulative stockholder return on our common stock since 
our initial public offering on September 18, 2013 with the Nasdaq Composite Index and the Nasdaq Biotechnology 
Index. The stockholder return shown in the graph below is not necessarily indicative of future performance, and we 
do not make or endorse any predictions as to future stockholder returns. This graph shall not be deemed “soliciting 
material” or be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities 
under that Section, and shall not be deemed to be incorporated by reference into any of our filings under the 
Securities Act, whether made before or after the date hereof and irrespective of any general incorporation language 
in any such filing. 

 $450

 $400

 $350

 $300

 $250

 $200

 $150

 $100

 $50

 $-

Five Prime (FPRX)

Nasdaq Composite (IXIC)

NASDAQ Biotechnology (NBI)

Sep 18, 2013

Dec 31, 2013

Dec 31, 2014

Dec 31, 2015

Dec 31, 2016

Dec 31, 2017

$100 investment in stock or index
Five Prime (FPRX) .................................  $
Nasdaq Composite Index (IXIC) ............  $
Nasdaq Biotechnology (NBI) .................  $

December 
31, 2013  

September 18, 
2013
100.00    $ 128.36    $ 206.42    $ 317.28    $ 383.10  $
100.00    $ 110.39    $ 125.17    $ 132.34    $ 142.27  $
100.00    $ 107.41    $ 144.04    $ 160.49    $ 125.69  $

December 
31, 2016  

December 
31, 2015  

December 
31, 2014  

December 
31, 2017

167.58 
182.45 
152.16  

Purchases of Equity Securities by the Issuer and Affiliated Purchasers 

None. 

61

 
   
 
 
 
 
Item 6. Selected Financial Data. 

You should read the following selected financial data together with the “Management’s Discussion and Analysis of 
Financial Condition and Results of Operations” section of this report and our financial statements and the 
accompanying notes included elsewhere in this report. We have derived the statements of operations data for the 
years ended December 31, 2017, 2016 and 2015 and the balance sheet data as of December 31, 2017 and 2016 from 
our audited financial statements appearing in this report. We have derived the statements of operations data for the 
years ended December 31, 2014 and 2013 and the balance sheet data as of December 31, 2015, 2014 and 2013 from 
our audited financial statements not included in this report. Our historical results for any prior period are not 
necessarily indicative of results to be expected in any future period. 

(in thousands, except per share amounts)
Statement of Operations Data:
Collaboration and license revenue ............................  $
Operating expenses:

2017

Year Ended December 31,
2015

2016

2014

2013

39,508    $ 30,691    $ 379,801 

 $ 19,231 

 $ 13,791 

2,467     
—     

70,197 
22,631 
92,828 
(99,212)     286,973 
487 

Research and development ..................................    150,908     
40,002     
General and administrative ..................................   

94,072     
35,831     
Total operating expenses................................    190,910      129,903     
Income (loss) from operations .......................    (151,402)    
Interest income ..........................................................   
2,978     
(94)    
Other income (expense), net .....................................   
Income (loss) before income taxes............................    (148,518)    
Income tax benefit (provision) ..................................   
(1,704)    
Net income (loss) ......................................................  $ (150,222)   $ (65,697)   $ 249,647 
Basic net income (loss) per share attributable to
   common stockholders (1).................................................
Diluted net income (loss) per share attributable to
   common stockholders (1) ................................................
Weighted average shares of common stock
   outstanding used in computing basic
   net income (loss) per share (1) .......................................
Weighted average shares of common stock
   outstanding used in computing diluted
   net income (loss) per share (1) .......................................

(96,745)     287,457 
31,048     

27,945     

26,955     

26,955     

27,945     

(2.44)   $

(5.38)   $

(2.44)   $

(5.38)   $

25,661 

27,035 

9.23 

9.73 

$

$

(3)   

(37,810)   

43,173 
13,632 
56,805 
(37,574)   
210 
(60)   
(37,424)   

32,785 
10,427 
43,212 
(29,421)
62 
487 
(28,872)
— 
 $ (37,424)  $ (28,872)

— 

 $

 $

(1.79)  $

(5.23)

(1.79)  $

(5.23)

20,865 

5,523 

20,865 

5,523  

(1)

See Note 7 to our financial statements for an explanation of the method used to calculate basic and diluted net 
income (loss) per share of common stock and the weighted average number of shares used in computation of 
the per share amounts. 

(in thousands)
Balance Sheet Data:
Cash, cash equivalents and marketable securities .....  $ 292,690    $ 421,748    $ 517,466    $ 149,054    $ 75,722 
63,835 
Working capital .........................................................    260,209      401,384      448,913      131,443     
81,791 
Total assets ................................................................    344,047      448,281      548,285      155,631     
58,026  
85,205     
Total stockholders’ equity .........................................    265,202      391,575      433,206     

2017

2016

2013

2014

As of December 31,
2015

62

 
  
 
 
 
   
   
   
   
 
     
       
       
       
       
 
     
       
       
       
       
 
  
  
  
  
  
  
  
  
  
  
  
 
 
 
 
  
  
 
 
  
  
  
 
 
 
 
   
   
   
   
 
     
       
       
       
       
 
 
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations. 

You should read the following discussion of our financial condition and results of operations in conjunction with the 
financial statements and the related notes included elsewhere in this Annual Report on Form 10-K. The following 
discussion contains forward-looking statements that reflect our plans, estimates and beliefs. Our actual results 
could differ materially from those discussed in the forward-looking statements. Factors that could cause or 
contribute to these differences include those discussed below and elsewhere in this Annual Report on Form 10-K, 
particularly in “Special Note Regarding Forward-Looking Statements and Industry Data” and “Risk Factors.” 

Overview 

We are a clinical-stage biotechnology company focused on discovering and developing innovative protein 
therapeutics to improve the lives of patients with serious diseases. Each of our product candidates has an innovative 
mechanism of action and addresses patient populations for which better therapies are needed. We have an emphasis 
in immuno-oncology, an area in which we have clinical, preclinical and discovery programs and product and 
discovery collaborations. In addition, we plan to use companion diagnostics where appropriate to allow us to select 
patients most likely to benefit from treatment with our product candidates. Our most advanced product candidates 
are identified below.

• Cabiralizumab (FPA008) is an antibody that inhibits colony stimulating factor-1, or CSF1, receptor, or 
CSF1R, that we are studying in clinical trials as a monotherapy in tenosynovial giant cell tumor, also 
known as diffuse pigmented villonodular synovitis, or PVNS, and in multiple cancers in combination with 
Bristol-Myers Squibb Company’s, or BMS, PD-1 immune checkpoint inhibitor, Opdivo. In October 2015, 
we entered into a license and collaboration agreement, or the cabiralizumab collaboration agreement, with 
BMS pursuant to which we granted BMS an exclusive worldwide license for the development and 
commercialization of cabiralizumab.

•

•

Bemarituzumab (FPA144) is an antibody that inhibits fibroblast growth factor receptor 2b, or FGFR2b, 
that we are initially developing to treat patients with gastric (stomach) or gastroesophageal junction, or 
GEJ, cancer and bladder cancer. In December 2017, we entered into a license and collaboration agreement, 
or the China collaboration agreement, with Zai Lab (Shanghai) Co., Ltd., or Zai Lab, pursuant to which 
we granted Zai Lab an exclusive license to develop and commercialize bemarituzumab in China, Hong 
Kong, Macau and Taiwan.

FPA150 is a CD8 T cell checkpoint inhibitor antibody that targets B7-H4 that we are developing as a 
monotherapy in multiple cancers. We plan to begin a Phase 1 clinical trial for FPA150 in the first half of 
2018. 

We have a differentiated target discovery platform and comprehensive libraries of transmembrane and extracellular 
soluble proteins that we believe encompass substantially all the body’s medically important targets for protein 
therapeutics. We have identified approximately 700 of these proteins, which we refer to as the immunome, that we 
believe modulate immune cell interactions and may be important in understanding and treating cancer in patients 
using immuno-oncology therapeutics. Our target discovery platform and capabilities position us well to explore 
pathways in cancer and inflammation and their intersection in immuno-oncology, an area of oncology with 
significant therapeutic potential and the focus of our research activities. We are applying our biologics discovery 
platform, including cell-based screening, immunome-by-immunome biophysical interaction screening, in vivo 
screening, receptor-ligand matching technologies and bioinformatics, to our immuno-oncology research programs. 
We have identified several targets that we believe could be useful in immuno-oncology that we are actively 
validating. We are also conducting research to discover additional targets. We generate and preclinically test 
therapeutic proteins, including antibodies and fusion proteins containing or directed to the targets we discover and 
validate. We plan to continue to advance selected therapeutic candidates into clinical development.

63

We have no products approved for commercial sale and have not generated any revenue from product sales to date. 
We continue to incur significant research and development and other expenses related to our ongoing operations and 
we expect that our expenses will increase as we advance our product candidates into later stages of clinical 
development and increase the number of product candidates in clinical development. We have incurred losses in 
each period since our inception in 2002, with the exception of the fiscal year ended December 31, 2015, due 
primarily to the $350.0 million upfront payment we received from BMS from our license and collaboration 
agreement for cabiralizumab, and the fiscal year ended December 31, 2011, due primarily to the $50.0 million 
upfront payment we received from GSK from our license and collaboration agreement for FP-1039. For the years 
ended December 31, 2017 and 2016, we reported net loss of $150.2 million and net loss of $65.7 million, 
respectively. 

Critical Accounting Policies and Use of Estimates 

Our management’s discussion and analysis of financial condition and results of operations is based upon our 
financial statements, which we have prepared in accordance with accounting principles generally accepted in the 
United States of America. The preparation of these financial statements requires us to make estimates, judgments 
and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and 
liabilities as of the date of the balance sheets and the reported amounts of collaboration revenue and expenses during 
the reporting periods. We base our estimates on historical experience and on various other assumptions that we 
believe to be reasonable under the circumstances at the time we make such estimates. Actual results and outcomes 
may differ materially from our estimates, judgments and assumptions. We periodically review our estimates in light 
of changes in circumstances, facts and experience. The effects of material revisions in estimates are reflected in the 
financial statements prospectively from the date of the change in estimate. Our significant accounting policies are 
more fully described in Note 2 to our financial statements.

We define our critical accounting policies as those accounting principles generally accepted in the United States of 
America that require us to make subjective estimates and judgments about matters that are uncertain and are likely 
to have a material impact on our financial condition and results of operations as well as the specific manner in which 
we apply those principles. We believe the critical accounting policies used in the preparation of our financial 
statements that require significant estimates and judgments are as follows: 

Revenue Recognition 

We recognize revenue when all of the following criteria are met: persuasive evidence of an arrangement exists; 
transfer of technology has been completed or services have been rendered; our price to the customer is fixed or 
determinable; and collectability is reasonably assured. 

The terms of our collaborative research and development agreements include upfront and license fees, research 
funding, milestone and other contingent payments to us for the achievement of defined collaboration objectives and 
certain preclinical, clinical, regulatory and sales-based events, as well as royalties on sales of any commercialized 
products. 

64

Multiple-Element Revenue Arrangements. Our collaborations primarily represent multiple-element revenue 
arrangements. To account for these transactions, we determine the elements, or deliverables, included in the 
arrangement and determine which deliverables are separable for accounting purposes. We consider delivered items 
to be separable if the delivered items have stand-alone value to the customer. If the delivered items are separable, we 
allocate arrangement consideration to the various elements based on each element’s relative selling price. The 
identification of individual elements in a multiple-element arrangement and the estimation of the selling price of 
each element involve significant judgment, including consideration as to whether each delivered element has 
standalone value to the customer. The revenue recognition standard established the hierarchy of determining the 
estimated selling price for deliverables within each agreement using vendor-specific objective evidence, or VSOE, 
of selling price, if available, or third-party evidence of selling price if VSOE is not available, or our best estimate of 
selling price, if neither VSOE nor third-party evidence is available. Determining the best estimate of selling price for 
a deliverable requires significant judgment. We use our best estimate of selling price to estimate the selling price for 
licenses to our proprietary technology since the VSOE or third-party evidence of selling price for these deliverables 
is not available. 

We recognize consideration allocated to an individual element when all other revenue recognition criteria are met 
for that element. Our multiple-element revenue arrangements generally include the following: 

•

Exclusive Licenses. The deliverables under our collaboration agreements generally include exclusive 
licenses to discover, develop, manufacture and commercialize certain compounds. To account for this 
element of the arrangement, we evaluate whether the exclusive license has standalone value apart from 
the undelivered elements to the collaboration partner based on the consideration of the relevant facts and 
circumstances of each arrangement, including the research and development capabilities of the 
collaboration partner and other market participants. We recognize arrangement consideration allocated to 
licenses upon delivery of the license if facts and circumstances indicate that the license has standalone 
value apart from the undelivered elements, which generally include research and development services. If 
facts and circumstances indicate that the delivered license does not have standalone value from the 
undelivered elements, we recognize the revenue as a combined unit of accounting. 

We have determined that some of our exclusive licenses lack standalone value apart from the related 
research and development services. In those circumstances, we recognize collaboration revenue from non-
refundable upfront and license fees in the same manner as the undelivered item(s), which is generally the 
period over which we provide the research and development services. For circumstances in which upfront 
and license fees are contingently refundable, we defer the recognition of the upfront and license fees until 
such time that the consideration is considered to be fixed or determinable.

• Research and Development Services. The deliverables under our collaboration and license agreements 
generally include deliverables related to research and development services we perform on behalf of the 
collaboration partner. As the provision of research and development services is a part of our central 
operations and we are principally responsible for the performance of these services under the agreements, 
we recognize revenue on a gross basis for research and development services as we perform those 
services. Additionally, we recognize research funding related to collaborative research and development 
efforts as revenue as we perform or deliver the related services in accordance with contract terms as long 
as we will receive payment for such services upon standard payment terms. 

Milestone Revenue. Our collaboration and license agreements generally include contingent and milestone payments 
related to specified research, development and regulatory milestones and sales-based milestones. Research, 
development and regulatory contingent and milestones payments are typically receivable under our collaborations 
when our collaborator claims or selects a target, initiates or advances a covered product candidate in preclinical or 
clinical development, upon submission for marketing approval of a covered product with regulatory authorities, 
upon receipt of actual marketing approvals of a covered product or for additional indications, or upon the first 
commercial sale of a covered product. Sales-based milestones are typically receivable when annual sales of a 
covered product reach specified levels. 

65

At the inception of each arrangement that includes milestone payments, we evaluate whether each milestone is 
substantive and at risk to both parties on the basis of the contingent nature of the milestone. We evaluate factors 
such as the scientific, regulatory, commercial and other risks that we must overcome to achieve the respective 
milestone, the level of effort and investment required to achieve the respective milestone and whether the milestone 
consideration is reasonable relative to all deliverables and payment terms in the arrangement in making this 
assessment. 

We have elected to adopt the Accounting Standards Codification (ASC) 605-28, Revenue Recognition — Milestone 
Method, such that we recognize any payment that is contingent upon the achievement of a substantive milestone 
entirely in the period in which the milestone is achieved. A milestone is defined as an event that can only be 
achieved based in whole or in part on either our performance or the occurrence of a specific outcome resulting from 
our performance for which there is substantive uncertainty at the date the arrangement is entered into that the event 
will be achieved. Therefore, a milestone does not include events for which occurrence is contingent solely on the 
performance of a collaborative partner. To be substantive, a milestone must meet all of the following criteria: the 
consideration receivable upon the achievement of the milestone is commensurate with either our performance after 
the agreement to achieve the milestone or the enhancement of value of delivered items as a result of a specific 
outcome resulting from our performance after the agreement to achieve the milestone, the consideration relates 
solely to past performance, and the consideration is reasonable relative to all of the deliverables and payment terms 
in the arrangement. 

On January 1, 2018, we adopted Accounting Standards Update (ASU) 2014-09, which differs from the current 
accounting standard in many respects. See Note 2 to our financial statements for information regarding our adoption 
of ASU 2014-09.

Research and Development Expenses 

Research and development expenses consist of costs we incur for our own and for sponsored and collaborative 
research and development activities. Expenses we incur related to collaborative research and development 
agreements approximate the revenue recognized under these agreements. Research and development costs are 
expensed as incurred. Research and development costs consist of salaries and benefits, including associated stock-
based compensation, laboratory supplies and facility costs, as well as fees paid to other entities that conduct certain 
research and development activities on our behalf. We estimate preclinical study and clinical trial expenses based on 
the services performed pursuant to contracts with research institutions and contract research organizations, or CROs, 
and clinical manufacturing organizations, or CMOs, that conduct and manage preclinical studies and clinical trials 
on our behalf based on actual time and expenses incurred by them. Further, we accrue expenses related to clinical 
trials based on the level of patient enrollment and activity according to the related agreement. We monitor patient 
enrollment levels and related activity to the extent reasonably possible and adjust estimates accordingly. If we do not 
identify costs that we have begun to incur or if we underestimate or overestimate the level of services performed or 
the costs of these services, our actual expenses could differ from our estimates. To date, we have not experienced 
significant changes in our estimates of preclinical studies and clinical trial accruals. 

We expense payments for the acquisition and development of technology as research and development costs if, at 
the time of payment, the technology is under development, is not approved by the U.S. Food and Drug 
Administration or other regulatory agencies for marketing, has not reached technical feasibility, or otherwise has no 
foreseeable alternative future use. 

66

Stock-Based Compensation 

We issue stock-based compensation awards in the form of restricted stock awards and stock options. We measure 
stock-based compensation expense related to these awards based on the fair value of the award on the date of grant 
and recognize stock-based compensation expense on a straight-line basis over the requisite service period of the 
awards, which generally equals the vesting period. 

Restricted stock awards we grant to employees generally vest over three years, though we have granted awards with 
shorter vesting schedules from time to time. We base stock-based compensation expense related to restricted stock 
awards on the closing market value of our common stock at the date of grant and recognize expense ratably over the 
requisite service period. 

Stock options we grant to employees generally vest over four years. We have selected the Black-Scholes option 
pricing model to determine the fair value of stock option awards, which requires the input of various assumptions 
that require management to apply judgment and make assumptions and estimates, including: 

•

•

•

•

The expected term of the stock option award, which we calculate using the simplified method in 
accordance with the Securities and Exchange Commission Staff Accounting Bulletin Nos. 107 and 110, 
which calculates the expected term as the midpoint of the contractual term of the options and the ordinary 
vesting period, as we have insufficient historical information regarding our stock options to provide 
another basis for estimate. We expect to use the simplified method until we have sufficient historical 
exercise data to provide a reasonable basis upon which to estimate expected term; 

The expected volatility of the underlying common stock, which in 2013 and prior years was estimated 
based on the average historical volatility of a peer group of comparable publicly traded life sciences and 
biotechnology companies over the expected term, as we did not have significant trading history for our 
common stock during those periods. We estimated volatility for options granted in 2014 and 2015 based 
on the average of the historical volatility of our common stock price and a peer group of public 
companies. We selected the peer group on the basis of operational and economic similarity with our 
business operations. Beginning in 2016, we estimated volatility for options based on the historical 
volatility of our common stock price since we became publicly traded; 

The assumed dividend yield, which is based on our expectation of not paying dividends for the 
foreseeable future;  

The fair value of our common stock is determined on the date of grant, as described below. 

We estimated the fair value of each stock option using the Black-Scholes option-pricing model based on the date of 
grant of such stock option with the following assumptions: 

2015
5.5-6.1
Expected term (years) ............................................  
Expected volatility .................................................  
71-76%  
Risk-free interest rate.............................................   1.9-2.2%     1.3%-1.8%     1.4-1.9%  
0.0%  
Expected dividend yield.........................................    

2017
5.5-6.3
66-70%    

0.0%      

0.0%      

Year Ended December 31,
2016
5.5-6.3
69-74%    

We account for restricted stock awards granted to individual service providers who are not employees or directors at 
fair value by remeasuring the cost based on the closing stock price at the end of that reporting period.

We account for stock options granted to individual service providers who are not employees or directors at estimated 
fair value using the Black-Scholes option-pricing method. These stock options are subject to periodic 
remeasurement over the period during which the services are rendered. 

For stock options granted subsequent to our September 2013 IPO, the exercise price equals the closing market price 
of the underlying common stock on the grant date. 

67

 
 
 
 
 
 
   
   
 
   
   
 
Income Taxes 

We account for income taxes using the liability method, under which deferred tax assets and liabilities are 
determined based on differences between financial reporting and tax basis of assets and liabilities and are measured 
using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. On December 
22, 2017, the Tax Cuts and Jobs Act of 2017, or the Tax Act, was signed into law. The Tax Act reduces the 
corporate tax rate from a top marginal rate of 35% to a flat rate of 21%. Although the Tax Act is generally effective 
on January 1, 2018, GAAP requires recognition of the tax effects of new legislation during the reporting period that 
includes the enactment date, which was December 22, 2017. Because of the impacts of the Tax Act, the SEC issued 
Staff Accounting Bulletin No. 118 Income Tax Accounting Implications of the Tax Cuts and Jobs Act (SAB 118) 
that allows us to record provisional amounts for those impacts, with the requirement that the accounting be 
completed in a period not to exceed one year from the date of enactment. Since the Tax Act was passed late in the 
fourth quarter of 2017, and ongoing guidance and accounting interpretation are expected over the next 12 months, 
we consider the accounting for the deferred tax re-measurement to be provisional. The primary impact of the Tax 
Act resulted from the re-measurement of deferred tax assets and liabilities due to the change in the corporate tax rate 
(“Corporate Tax Rate Change”), reducing our deferred tax assets by $27.1 million with a corresponding reduction in 
our valuation allowance, which had no effect on our effective tax rate. Additional work will be necessary for a more 
detailed analysis of our deferred tax assets and liabilities as well as potential correlative adjustments. We do not 
expect any material subsequent adjustments to these amounts. Adjustments, if any, are not expected to have any 
impact to our results of operations due to our loss position and valuation allowance.

Our income tax provision for 2017 is based on the Internal Revenue Service reducing our tentative net operating loss 
carryback refund claim filed in March 2017. Our income tax benefit for 2016 relates to our ability to carry back 2016 
losses to the 2015 tax year and to obtain a refund of taxes paid related to a prior period. Valuation allowances are 
provided when the expected realization of the deferred tax assets does not meet the more-likely-than-not criteria. As 
a result, deferred tax assets at the end of 2017 are subject to a full valuation allowance. We are required to determine 
whether it is more likely than not that a tax position will be sustained upon examination by the appropriate taxing 
authorities before any part of the benefit can be recorded in the financial statements. It is our practice to recognize 
interest and penalties related to unrecognized tax benefits, if any, as a component of income tax expense. 

New Accounting Standards

For a discussion of new accounting standards, please read Note 2 to our financial statements.

68

Financial Overview 

Collaboration and License Revenue 

We have not generated any revenue from product sales. We have derived our revenue to date from upfront 
payments, research and development funding and milestone payments under collaboration and license agreements 
with our collaboration partners and licensees. We currently have an active immuno-oncology research collaboration 
and cabiralizumab license and collaboration agreement with BMS. We completed the research term of our research 
collaboration in respiratory diseases with GSK and our fibrosis and CNS research collaboration with UCB Pharma 
S.A., or UCB, in July 2016 and March 2016, respectively, but are still eligible for certain contingent payments under 
the agreements governing these collaborations. For additional information on these collaborations, please see the 
section titled “Business – Collaborations” located elsewhere in this report.

Summary Revenue by Collaboration and License Agreements

The following is a comparison of collaboration and license revenue for the years ended December 31, 2017, 2016 
and 2015:  

(in millions)
R&D Funding

Cabiralizumab Collaboration - BMS .....................   $
Immuno-oncology Research Collaboration - BMS .....   
Respiratory Diseases Collaboration - GSK............    
FP-1039 Product Collaboration - GSK ..................    
Fibrosis and CNS Collaboration - UCB.................    

Ratable Revenue Recognition

Cabiralizumab Collaboration - BMS .....................    
Immuno-oncology Research Collaboration - BMS .....   
Respiratory Diseases Collaboration - GSK............    
Fibrosis and CNS Collaboration - UCB.................    

Milestone and Contingent Payments

Immuno-oncology Research Collaboration - BMS .....   
Respiratory Diseases Collaboration - GSK............    
Fibrosis and CNS Collaboration - UCB.................    

Other License Revenue

Year Ended December 31,
2016

2015

2017

17.8   $
2.5    
—    
—    
—    

5.9    
4.5    
—    
3.0    

5.0    
0.5    
0.3    

8.5   $
3.3    
2.4    
—    
0.1    

5.9    
4.4    
0.8    
3.0    

—    
1.8    
0.4    

3.5 
2.5 
4.0 
0.1 
0.9 

6.4 
4.5 
2.7 
3.0 

— 
0.6 
0.1 

Cabiralizumab Collaboration - BMS .....................    
bluebird bio License Agreement ............................    
Total.............................................................................  $

—    
—    
39.5   $

—    
0.1    
30.7   $

350.0 
1.5 
379.8  

We expect that any revenue we generate will fluctuate from period to period as a result of the timing and amount of 
milestones and other payments from our existing collaborations and licenses or entry into any new collaboration or 
license agreements. 

69

 
 
 
 
 
   
   
 
   
 
     
 
     
 
 
     
      
      
 
     
      
      
 
   
     
     
  
BMS License and Collaboration Agreement

In October 2015, we entered into the cabiralizumab collaboration agreement with BMS, pursuant to which we 
granted to BMS an exclusive, worldwide license to develop and commercialize certain CSF1R antibodies, including 
cabiralizumab, and all modifications, derivatives, fragments or variants of such antibodies, each of which we refer to 
as a licensed antibody. The cabiralizumab collaboration agreement superseded the clinical trial collaboration 
agreement that we entered into with BMS in November 2014, or the clinical trial collaboration agreement. We 
continue to conduct the current Phase 1a/1b clinical trial to evaluate the safety, tolerability and preliminary efficacy 
of combining Opdivo® (nivolumab) with cabiralizumab in multiple tumor types, or the Phase 1a/1b trial, that we 
commenced under the clinical trial collaboration agreement. BMS bears all costs and expenses relating to the Phase 
1a/1b trial, including manufacturing costs for the supply of cabiralizumab, except that we are responsible for our 
own internal costs, including internal personnel costs. 

Pursuant to the cabiralizumab collaboration agreement, BMS obtained license rights and paid us an upfront fee of 
$350.0 million, which we fully recognized as revenue in the fourth quarter of 2015. We identified the license to 
BMS and the associated transfer of manufacturing and other know-how as substantive deliverables under this 
agreement. We fully delivered these deliverables as of December 31, 2015. Additionally, with respect to each 
licensed product under the collaboration, we will be eligible to receive up to (i) $505.0 million in specified 
developmental and regulatory milestone payments for all combination therapies of such licensed product with 
Opdivo; (ii) $542.5 million in specified developmental and regulatory milestone payments for combination therapies 
of such licensed product with one or more of BMS’ or our proprietary products, at least one of which is not Opdivo, 
in the field of oncology; and (iii) $340.0 million in specified developmental and regulatory milestone payments for 
therapeutic uses of such licensed product in PVNS and non-oncology indications. 

BMS will also be obligated to pay us, with respect to each licensed product in each country, tiered percentage 
royalties ranging from the high teens to the low twenties, subject to reduction in certain circumstances, on 
worldwide net sales of such licensed product until the latest of (i) the expiration of certain patents covering such 
licensed product in such country, (ii) the date on which any applicable regulatory, pediatric, orphan drug or data 
exclusivity with respect to such licensed product expires in such country, (iii) the date of the first commercial sale in 
such country of a biosimilar product with respect to such licensed product or (iv) 12 years after the first commercial 
sale of such licensed product in such country. Under the cabiralizumab collaboration agreement, BMS will be 
obligated to pay us an additional low single-digit percentage royalty on net sales in the U.S. in the event we exercise 
our co-promotion option. We cannot determine the date on which BMS’s potential royalty payment obligations to us 
would expire because BMS has not yet developed any licensed products under the agreement and therefore we 
cannot identify the date of the first commercial sale or any related patents covering or regulatory exclusivity periods 
with respect to such licensed product.

Under the original terms of the 2014 clinical trial collaboration agreement, BMS paid us an upfront fee of $30.0 
million in December 2014. At that time, the $30.0 million upfront fee was contingently refundable. Since the upfront 
fee was not considered to be fixed or determinable, we recorded it as deferred revenue. Upon signing the 
cabiralizumab collaboration agreement, the $30.0 million upfront fee was no longer refundable. Accordingly, we 
began recognizing revenue ratably, using a cumulative catch up method, over the estimated performance period 
through 2019. During 2017, we recognized $23.7 million of revenue under the cabiralizumab collaboration 
agreement, including $17.8 million of revenue for research funding. As of December 31, 2017, we had deferred 
revenue of $11.8 million related to the cabiralizumab collaboration agreement, which we expect to recognize 
through March 2019. 

70

Zai Lab China License and Collaboration Agreement 

In December 2017, we entered into a license and collaboration agreement with Zai Lab, or the China collaboration 
agreement, pursuant to which we granted Zai Lab an exclusive license to develop and commercialize 
bemarituzumab, and all fragments, conjugates, derivatives and modifications thereof, or the licensed antibody, in 
China, Hong Kong, Macau, and Taiwan, each a region, and collectively, the territory. 

Under the terms of the China collaboration agreement, Zai Lab will be responsible, at its expense, for (i) developing 
and commercializing products containing the licensed antibody, each, a licensed product, under a territory 
development plan and (ii) performing certain development activities to support our global development and 
registration of licensed products, including the Phase 3 portion of our Phase 1/3 global registrational trial to test 
bemarituzumab in combination with 5-fluorouracil (5-FU), leucovorin, and oxaliplatin, or mFOLFOX6, as front-line 
treatment of patients with gastric or gastroesophageal junction, or GEJ, cancer that overexpresses FGFR2b, or the 
FIGHT trial, in the territory, under a global development plan.

Pursuant to the China collaboration agreement, with respect to each licensed product, we are eligible to receive up to 
$39 million of specified development, regulatory, and commercial milestone payments. Zai Lab will also be 
obligated to pay us a royalty, on a licensed product-by-licensed product and region-by-region basis, in the high teens 
or low twenties, depending on the number of patients Zai Lab enrolls in the FIGHT trial, subject to reduction in 
certain circumstances, on net sales of each licensed product in each region until the latest of (i) the 11th anniversary 
of the first commercial sale of such licensed product in such region, (ii) the expiration of certain patents covering 
such licensed product in such region, and (iii) the date on which any applicable regulatory, pediatric, orphan drug or 
data exclusivity with respect to such licensed product expires in such region. We cannot determine the date on which 
Zai Lab’s potential royalty payment obligations to us would expire because Zai Lab has not yet developed any 
licensed products under the China collaboration agreement and we therefore cannot at this time identify the date of 
the first commercial sale or any related patents covering or regulatory exclusivity periods with respect to such 
licensed product. 

Under the China collaboration agreement, provided that Zai Lab enrolls and treats a specified number of patients in 
the FIGHT trial in China, Zai Lab is eligible to receive a low single-digit percentage royalty, on a licensed product-
by-licensed product basis on net sales of a licensed product outside the territory until the 10th anniversary of the first 
commercial sale of each such licensed product outside the territory. 

Under the China collaboration agreement, we recorded a $4.2 million receivable in December 2017 for the non-
refundable and non-creditable upfront fee of $5.0 million (net of expected value-added tax withholdings of $0.8 
million). We applied ASC 605-25, Multiple-Deliverable Revenue Arrangements, in evaluating the appropriate 
accounting for this agreement. In accordance with this guidance, we concluded that the agreement consideration 
shall be recognized over the period that the development services are provided under a global development plan. As 
of December 31, 2017, services under the global development plan had not begun. Accordingly, as of December 31, 
2017, we had deferred revenue relating to the collaboration of $4.2 million, which we expect to recognize beginning 
in 2018 over the estimated performance period. 

BMS Immuno-Oncology Research Collaboration 

In March 2014, we entered into a research collaboration and license agreement, or the immuno-oncology research 
collaboration with BMS. The initial three-year research term of the immuno-oncology research collaboration ended 
in March 2017. In each of December 2016 and December 2017, BMS exercised its option to extend the research 
term for an additional year to March 2018 and March 2019, respectively. 

We received an upfront payment of $20.0 million in April 2014 in connection with our entry into the immuno-
oncology research collaboration. Through December 31, 2017, we received $11.6 million of research funding. 

71

We are eligible to receive up to $240.0 million per collaboration target in specified developmental, regulatory and 
commercialization contingent payments. These payments are comprised of aggregate developmental contingent 
payments of up to $53.0 million, aggregate regulatory contingent payments of up to $74.0 million and aggregate 
commercialization contingent payments of up to $113.0 million. We are also eligible to receive up to $60.0 million 
in sales-based contingent payments per collaboration product. In December 2017, we recognized $5.0 million 
related to a developmental contingent payment, which we received in February 2018. 

In connection with the immuno-oncology research collaboration, BMS purchased 994,352 shares of our common 
stock at a price per share of $21.16, for an aggregate purchase price of $21.0 million. We determined that the 
purchase price of $21.16 per share exceeded the fair value of our common stock by $2.4 million and, therefore, 
recorded the $2.4 million as deferred revenue, which we recognized in the same manner as the $20.0 million upfront 
payment and allocated to the deliverables under the collaboration. 

During 2017, we recognized $12.0 million of revenue under the immuno-oncology research collaboration, including 
$5.0 million of contingent payments. As of December 31, 2017, we had deferred revenue relating to the immuno-
oncology research collaboration of $6.3 million, which we expect to recognize through March 2019. 

GSK Respiratory Diseases Collaboration 

In April 2012, we entered into research collaboration and license agreement, or the respiratory diseases 
collaboration, with GSK to identify new therapeutic approaches to treat refractory asthma and chronic obstructive 
pulmonary disease, or COPD, function with a particular focus on identifying novel protein therapeutics and antibody 
targets. We conducted six customized cell-based screens of our protein library under this agreement. Under the 
terms of the agreement, GSK paid us an upfront technology access payment of $7.5 million at the inception of the 
respiratory diseases collaboration. In addition, GSK agreed to pay us $10.5 million of research funding over the 
research program term. Pursuant to the respiratory diseases collaboration, GSK exercised its option to expand the 
research plan to include two additional screening assays. In January 2016, we amended our respiratory diseases 
collaboration to extend the research term by three months to July 2016 to allow additional validation of the protein 
targets we discovered and to increase the research funding that GSK was obligated to pay us under the collaboration 
by $0.7 million. We had fully received all research funding as of December 31, 2016.

We are eligible to receive up to $124.3 million in potential target evaluation and selection fees and contingent 
payments with respect to each protein target for which GSK will have sole responsibility for the further development 
and commercialization of products that incorporate or target such protein target, or a track 1 target. GSK is also 
obligated to pay us tiered low- to mid-single digit royalties on global net sales for each product that incorporates or 
targets each such track 1 target. We are eligible to receive up to $193.8 million in potential target evaluation and 
selection fees and contingent payments with respect to each protein target for which we will develop biologics that 
incorporate or target the protein targets through to clinical proof of mechanism in either a phase 1 clinical trial or a 
phase 2 clinical trial, or a track 2 target. GSK is also obligated to pay us tiered high-single to low-double digit 
royalties on global net sales for each product that incorporates or targets each such track 2 target. During 2017, we 
recognized $0.5 million of revenue under the respiratory diseases collaboration from target and selection fees. 

We fully recognized the deferred revenue in 2016 following the completion of our obligation to provide research 
services.

72

UCB Fibrosis and CNS Collaboration 

In March 2013, we entered into a research collaboration and license agreement, or the fibrosis and CNS 
collaboration, with UCB to identify innovative biologics targets and therapeutics in the areas of immunologic 
diseases and central nervous system disorders. The research term of the fibrosis and CNS collaboration ended in 
March 2016. 

We are eligible to receive up to $92.2 million in potential evaluation and selection fees and contingent payments 
with respect to each protein target for which UCB elects to obtain an exclusive license, comprising aggregate target 
evaluation and selection fees of up to $0.4 million, preclinical and development-related contingent payments of up 
to $11.8 million, regulatory-related contingent payments of up to $20.0 million and commercial-related contingent 
payments of up to $60.0 million. UCB is also obligated to pay us tiered low- to mid-single digit royalties on global 
net sales for each product that incorporates or targets the protein. During 2017, we received $0.3 million in target 
evaluation and selection fees.

At the inception of the fibrosis and CNS collaboration, UCB made an upfront payment to us of $6.0 million and 
agreed to pay us $6.6 million for technology fees and $2.0 million for research funding. As of December 31, 2015, 
we fully collected on the technology access fees and research funding under the fibrosis and CNS collaboration. 
During 2017, we recognized $3.3 million of revenue under the fibrosis and CNS collaboration. As of December 31, 
2017, we had deferred revenue of $0.6 million related to this agreement. 

Our initial research activities under this agreement were completed in March 2016. Upon the completion of those 
research activities, UCB has up to a two-year evaluation period during which we may be obligated to perform 
additional services at the request of UCB.

bluebird bio, Inc. License Agreement

In May 2015, we entered into an exclusive license agreement, referred to as the bluebird license agreement, with 
bluebird bio, Inc., or bluebird, under which we licensed to bluebird human antibodies to an undisclosed cancer target 
to research, develop and commercialize chimeric antigen receptor, or CAR, T cell therapies using such antibodies. 
Under the bluebird license agreement, bluebird paid us a $1.5 million upfront fee in 2015. 

There are no other deliverables under the agreement other than the license grant. We recognized the $1.5 million 
upfront fee as revenue upon delivery of the license grant, which was completed in 2015. 

In January 2017, bluebird delivered to us written notice of termination of the license agreement. Pursuant to the 
terms of the license agreement, the termination became effective on May 17, 2017. Following termination, bluebird 
had no future payment obligations to us in connection with the license agreement.

73

Research and Development 

Research and development expenses consist of costs we incur in performing internal and collaborative research and 
development activities. Expenses incurred related to collaborative research and development agreements generally 
approximate the revenue recognized under these agreements. Research and development costs consist of salaries and 
benefits, including associated stock-based compensation, lab supplies and facility costs, as well as fees paid to other 
entities that conduct certain research and development activities, including manufacturing, on our behalf. 

We are conducting research and development activities on several disease targets and product candidates. 

We have a research and development team that designs, manages and evaluates the results of all our research and 
development activities. We conduct most of our core target discovery and early research and preclinical activities 
internally and rely more heavily on third-parties, such as clinical research organizations, or CROs, and clinical 
manufacturing organizations, or CMOs, for the execution of our IND-enabling and development activities, such as 
GLP toxicology studies, drug substance and drug product manufacturing, lab-developed test and companion 
diagnostic development, and the conduct of our clinical trials. We account for research and development costs on a 
program-by-program basis. In the early phases of research and discovery, our costs are often related to conducting 
target screening, evaluation and validation activities and conducting research activities with respect to selected 
targets and target pathways and are not necessarily allocable to a specific program. We assign costs for such 
activities to a distinct non-program related project code. We allocate research and development management, 
overhead, common usage laboratory supplies and facility costs on a full-time equivalent basis. 

The following is a comparison of research and development expenses for the years ended December 31, 2017, 2016 
and 2015: 

(in millions)
Development programs:

Year Ended December 31,
2016

2015

2017

Cabiralizumab ........................................................   $
Bemarituzumab ......................................................    
FPA150 ..................................................................   
FP-1039..................................................................   
  Subtotal development programs ................................    
Preclinical programs....................................................    
Discovery collaborations .............................................    
Early research and discovery.......................................    
Total research and development expenses........   $

29.5   $
34.8    
19.0    
1.6    
84.9    
32.5    
4.0    
29.5    
150.9   $

19.9   $
21.9    
—    
0.3    
42.1    
18.3    
8.1    
25.6    
94.1   $

18.8 
7.8 
— 
0.2 
26.8 
12.9 
17.9 
12.6 
70.2  

We expect that most of the research and development expenses we incur will continue to relate to activities to 
support our cabiralizumab, bemarituzumab, and FPA150 development programs and our immuno-oncology 
preclinical, research and discovery efforts. We expect our research and development expenses to increase as we 
advance our current product candidates through clinical development and additional product candidates into 
preclinical and clinical development, in particular as we increase the number and size of our clinical trials and as we 
expand our internal immuno-oncology preclinical, research and discovery efforts. We expect that our cabiralizumab 
and bemarituzumab development-related expenses will increase at a faster rate than our other internal program 
research and development expenses as we advance cabiralizumab through our Phase 2 clinical trial in PVNS and 
complete our Phase 1a/1b clinical trial in various multiple cancers, and as we advance bemarituzumab in our Phase 1 
clinical trial in gastric and bladder cancers, our Phase 1 clinical trial in Japan and our Phase 1/3 FIGHT trial to 
evaluate bemarituzumab in combination with standard of care chemotherapy. We expect our preclinical program 
expenses to continue to increase as we initiate additional therapeutic molecule campaigns and advance our 
preclinical programs into and through IND-enabling studies. 

74

 
 
 
 
 
   
   
 
     
      
      
 
The process of conducting preclinical studies and clinical trials necessary to obtain regulatory approval is costly and 
time-consuming. We or our partners may never succeed in achieving marketing approval for any of our drug 
candidates. Numerous factors may affect the probability of success for each drug candidate, including preclinical 
data, clinical data, competition, manufacturing capability and commercial viability. 

The successful development of our drug candidates is highly uncertain and may not result in approved products. 
Completion dates and completion costs can vary significantly for each drug candidate and are difficult to predict for 
each product. Given the uncertainty associated with clinical trial enrollments and the risks inherent in the 
development process, we are unable to determine the duration and completion costs of the current or future clinical 
trials of our drug candidates or if, or to what extent, we will generate revenues from the commercialization and sale 
of any of our drug candidates. We anticipate we will make determinations as to which programs to pursue and how 
much funding to direct to each program on an ongoing basis in response to the outcome of research, nonclinical and 
clinical activities of each drug candidate, as well as ongoing assessments as to each drug candidate’s commercial 
potential. We will need to raise additional capital or may seek additional product collaborations in the future in order 
to complete the development and commercialization of our drug candidates. 

General and Administrative 

General and administrative expenses consist primarily of salaries and related benefits, including associated stock-
based compensation, related to our executive, finance, legal, business development, human resource and support 
functions. Other general and administrative expenses include allocated facility-related costs not otherwise included 
in research and development expenses, travel expenses and professional fees for auditing and tax and legal services, 
including intellectual property-related legal services. 

We expect our general and administrative expenses to increase due to expanded operations to support our increased 
research and development activities. Also, we expect our intellectual property-related legal expenses, including 
those related to preparing, filing and prosecuting patent applications and maintaining patents, to increase as our 
intellectual property portfolio expands.

Interest Income 

Interest income consists of interest income earned on our cash and cash equivalents and marketable securities. 

Other (Expense) Income, Net 

Other (expense) income, net consists primarily of the gain or loss on the disposal of property and equipment, if any. 

75

Results of Operations 

Comparison for the Years Ended December 31, 2017 and 2016 

(in millions)
Collaboration and license revenue ................................  $
Operating expenses:

Research and development ......................................   
General and administrative ......................................   
Total operating expenses...............................................   
Interest income ..............................................................   
Other expense, net.........................................................   
Loss before income tax .................................................   
Income tax benefit (provision) ......................................   
Net loss..........................................................................  $

Year Ended 
December 31,

2017

2016

39.5    $

30.7 

150.9     
40.0     
190.9     
3.0     
(0.1)   
(148.5)   
(1.7)   
(150.2)  $

94.1 
35.8 
129.9 
2.5 
— 
(96.7)
31.0 
(65.7)

Collaboration and License Revenue 

Collaboration and license revenue increased by $8.8 million, or 28.7%, to $39.5 million in 2017 from $30.7 million 
in 2016. This increase was primarily due to the $9.3 million increase in revenue from our cabiralizumab 
collaboration agreement with BMS and a $4.3 million increase in revenue, primarily from a $5.0 million 
developmental contingent payment from our immuno-oncology research collaboration with BMS, offset by a $4.5 
million decrease in revenue recognized under our respiratory diseases collaboration with GSK as the research term 
ended in July 2016.

Research and Development 

Our research and development expenses increased by $56.8 million, or 60.4%, to $150.9 million in 2017 from $94.1 
million in 2016. This increase was primarily due to an increase of $14.2 million to further advance our preclinical 
programs toward filing INDs. There was also an increase of $9.6 million to advance cabiralizumab in our Phase 2 
clinical trial in PVNS and our Phase 1a/1b clinical trial in immuno-oncology, a $12.9 million increase to advance 
our bemarituzumab development program and a $13.0 million increase to advance our FPA150 development 
program, which was included in preclinical programs before 2017.

General and Administrative 

Our general and administrative expenses increased by $4.2 million, or 11.7%, to $40.0 million in 2017 from $35.8 
million in 2016, primarily due to a $1.4 million increase in facilities expense related to our new corporate office and 
laboratory facility, a $1.0 million increase in stock-based compensation costs and a $0.7 million increase in spending 
associated with the development of our commercialization strategy.

Income Tax Benefit (Provision)

We recognized a tax expense of $1.7 million in 2017 related to deficiency interest based on the Internal Revenue 
Service reducing our tentative net operating loss carryback refund claim filed in March 2017. Our income tax benefit 
for 2016 relates to our ability to carry back 2016 losses to the 2015 tax year and to obtain a refund of taxes paid 
related to a prior period. 

76

 
 
 
 
 
   
 
     
       
 
Comparison of the Years Ended December 31, 2016 and 2015 

(in millions)
Collaboration and license revenue ................................  $
Operating expenses:

Research and development ......................................   
General and administrative ......................................   
Total operating expenses...............................................   
Interest income ..............................................................   
Income (loss) before income tax ...................................   
Income tax benefit (provision) ......................................   
Net income (loss) ..........................................................  $

Year Ended 
December 31,

2016

2015

30.7    $

379.8 

94.1     
35.8     
129.9     
2.5     
(96.7)   
31.0     
(65.7)  $

70.2 
22.6 
92.8 
0.5 
287.5 
(37.8)
249.6  

Collaboration and License Revenue 

Collaboration and license revenue decreased by $349.1 million, or 91.9%, to $30.7 million in 2016 from 
$379.8 million in 2015. This decrease was primarily due to the $350.0 million upfront payment we received in 2015 
from BMS under our cabiralizumab collaboration that we entered into in October 2015.

Research and Development 

Our research and development expenses increased by $23.9 million, or 34.0%, to $94.1 million in 2016 from $70.2 
million in 2015. This increase was primarily due to a $14.1 million increase related to advancing bemarituzumab 
through our Phase 1 clinical trial, a $13.0 million increase in early research and discovery expenses to discover and 
validate immuno-oncology targets and generate and select new therapeutic candidates and a $5.4 million increase in 
preclinical program expenses to advance selected therapeutic candidates into IND-enabling activities, which was 
offset by a $9.8 million decrease in our discovery collaboration costs. 

General and Administrative 

Our general and administrative expenses increased by $13.2 million, or 58.4%, to $35.8 million in 2016 from $22.6 
million in 2015, primarily due to an $11.9 million increase in payroll and stock-based compensation costs. 

Income Tax Benefit (Provision)

We recognized a tax benefit of $31.0 million in 2016. Our provision for income taxes was $37.8 million in 2015 due 
to taxable income generated in 2015. After the carryback of our 2016 net operating losses to 2015, we have 
maximized our ability to obtain a refund of prior income taxes paid. The resulting amount of income tax for the 
2015 period, after the carryback, relates to minimum taxes. 

Liquidity and Capital Resources 

As of December 31, 2017, we had $292.7 million in cash and cash equivalents and marketable securities invested in 
a U.S. Treasury money market fund and U.S. Treasury securities with maturities of 14 months or less.

In January 2018, we closed on a public offering of 5,897,435 shares of our common stock, which included 769,230 
shares sold upon the underwriters' full exercise of their option to purchase additional shares, resulting in aggregate 
gross proceeds of $115 million, before deducting underwriting discounts and commissions and estimated offering 
expenses payable by us, and net proceeds of approximately $108 million after deducting these amounts.

77

 
 
 
 
 
   
 
     
       
 
In addition to our existing cash and cash equivalents, we are eligible to receive research and development funding 
and to earn milestone and other contingent payments for the achievement of defined collaboration objectives and 
certain nonclinical, clinical, regulatory and sales-based events and royalty payments under our collaboration 
agreements. Our ability to earn these milestone and contingent payments and the timing of these milestones is 
primarily dependent upon the outcome of our collaborators’ and licensees’ research and development activities and 
is uncertain at this time. Our rights to payment under our collaboration and license agreements are our only 
committed external sources of funds. 

Funding Requirements 

Our primary uses of capital are, and we expect will continue to be, compensation and related expenses, third-party 
clinical and preclinical research and development services, including clinical trial, manufacturing, laboratory and 
related supplies, legal, patent and other regulatory expenses and general overhead costs. We believe our use of 
CROs and CMOs provides us with flexibility in managing our spending and limits our cost commitments at any 
point in time. 

Because our product candidates are in various stages of clinical and preclinical development and the outcome of 
these efforts is uncertain, we cannot estimate the actual amounts necessary to successfully complete the 
development and commercialization of our product candidates or whether, or when, we may achieve profitability. 
Until such time, if ever, that we can generate substantial product revenues, we expect to finance our cash needs 
primarily through equity financings and collaboration and licensing arrangements. Except for any obligations of our 
collaborators to reimburse us for research and development expenses or to make milestone or royalty payments 
under our agreements with them, we will not have any committed external sources of liquidity. To the extent that we 
raise additional capital through the future sale of equity or debt, the ownership interests of our stockholders will be 
diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights 
of our existing stockholders. If we raise additional funds through collaboration or licensing arrangements in the 
future, we may have to relinquish valuable rights to our technologies, future revenue streams or product candidates 
or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity 
or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or 
future commercialization efforts or grant rights to develop and market product candidates that we would otherwise 
prefer to develop and market ourselves. 

Based on our research and development plans and our timing expectations related to the progress of our programs, 
we expect that our existing cash and cash equivalents and marketable securities as of December 31, 2017 will enable 
us to fund our operating expenses and capital expenditure requirements for at least the next twelve months. 

78

Cash Flows 

The following is a summary of cash flows for the years ended December 31, 2017, 2016 and 2015: 

(in millions)
Net cash provided by (used in) operating activities ....  $
Net cash provided by (used in) investing activities.....   
Net cash provided by (used in) financing activities ....   

Year Ended December 31,
2016

2015

2017

(112.2)  $
174.2     
(9.9)   

(79.8)  $
(53.7)   
(8.9)   

289.1 
(238.2)
83.8  

Net Cash Provided by (Used in) Operating Activities 

Net cash used in operating activities was $112.2 million during the year ended December 31, 2017. The net loss of 
$150.2 million was offset by non-cash charges of $34.2 million for stock-based compensation expense, $1.6 million 
for amortization of premium on marketable securities and $2.5 million for depreciation and amortization. The net 
change in operating assets and liabilities was $0.4 million. 

Net cash used in operating activities was $79.8 million during the year ended December 31, 2016. The net loss of 
$65.7 million was offset by non-cash charges of $32.9 million for stock-based compensation expense, $15.1 million 
for deferred income taxes, $4.2 million for amortization of premium on marketable securities and $1.7 million for 
depreciation and amortization. The net change in operating assets and liabilities was $71.1 million, which is 
primarily due to a $52.8 million decrease in income tax payable and a $16.8 million decrease in deferred revenue 
from the recognition of revenue in the current period for cash received from collaboration partners in prior periods.

Net cash provided by operating activities was $289.1 million during the year ended December 31, 2015. Primarily 
due to the $350.0 million upfront payment from BMS for the cabiralizumab collaboration, we had net income of 
$249.6 million. Non-cash charges were $1.7 million for depreciation and amortization, $11.5 million for stock-based 
compensation expense, $2.0 million for amortization of premium on marketable securities, $3.1 million from excess 
tax benefits from employee equity incentive plans and $15.1 million in deferred income taxes. The net change in 
operating assets and liabilities was $36.2 million, which is primarily due to income taxes payable. 

Net Cash Provided by (Used in) Investing Activities 

Net cash provided in investing activities in 2017 was primarily due to maturities of marketable securities exceeding 
purchases of such marketable securities. Purchases of property and equipment was $4.9 million, $3.0 million and 
$2.4 million during the years ended December 31, 2017, 2016 and 2015, respectively. The property and equipment 
purchases consisted primarily of purchases of laboratory equipment to support our research and development 
activities. We expect a significant increase in our capital expenditures in 2018 as we will be paying for our share of 
tenant improvements to construct our new corporate office and laboratory facility that we relocated to in December 
2017.

Net Cash Provided by (Used in) Financing Activities 

Net cash used in financing activities was $9.9 million during the year ended December 31, 2017, primarily related to 
$13.9 million paid to satisfy tax withholding obligations from the net share issuance of restricted stock awards offset 
by $4.0 million received from employee stock option exercises and employee stock purchases in 2017. 

Net cash used in financing activities was $8.9 million during the year ended December 31, 2016, primarily related to 
$14.1 million paid to satisfy tax withholding obligations from the net share issuance of restricted stock awards and 
$3.1 million from excess tax benefits from employee equity incentive plans, offset by $8.3 million received from 
employee stock option exercises and employee stock purchases in 2016.

Net cash provided by financing activities was $83.8 million during the year ended December 31, 2015, primarily 
related to the net proceeds of $78.7 million from our 2015 underwritten public offering. Additionally, we received 
$5.1 million from employee stock option exercises and employee stock purchases in 2015.

79

 
 
 
 
 
   
   
 
Contractual Obligations and Contingent Liabilities 

The following table summarizes our significant contractual obligations as of December 31, 2017: 

 (in millions)
Contractual Obligations
Operating leases (1) ....................................................   $ 77,932    $
Total obligations ..................................................   $ 77,932    $

Total

    Less Than        
1 Year

    1 to 3 Years     3 to 5 Years     5 Years  
15,311    $ 43,230 
15,311    $ 43,230  

14,299    $
14,299    $

5,092    $
5,092    $

More 
Than

 (1)   Represents future minimum lease payments under non-cancelable operating leases in effect as of 

December 31, 2017 for our corporate office and laboratory facility in South San Francisco, California. The 
minimum lease payments above do not include common area maintenance charges or real estate taxes. 

The contractual obligations table above does not include any potential future milestone payments to third-parties as 
part of certain collaboration and in-licensing agreements, which could total up to $133.3 million, or any potential 
future royalty payments we may be required to make under our license agreements, including with: 

• Galaxy, under which we were granted an exclusive worldwide license for the development, 

manufacturing and commercialization of anti-FGFR2b antibodies; 

•

•

The Regents of the University of California, under which we were granted an exclusive license under 
certain patent rights related to our FP-1039 program;

BioWa-Lonza, under which we were granted a non-exclusive license to use their Potelligent® CHOK1SV 
technology, including the CHOK1SV cell line, and a non-exclusive license to related know-how and 
patents; and 

• Adimab, under which Adimab conducted programs to discover and evaluate antibodies directed against 

targets of interest to us and under which we licensed certain of these antibodies

Payments under these agreements are not included in the above contractual obligations table due to the uncertainty 
of the occurrence of the events requiring payment under these agreements, including our share of potential future 
milestone and royalty payments. These payments generally become due and payable only upon achievement of 
certain clinical development, regulatory or commercial milestones. 

Off-Balance Sheet Arrangements 

We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements, as 
defined under SEC rules. 

80

 
     
       
   
 
 
   
Item 7A. Quantitative and Qualitative Disclosures About Market Risk. 

The market risk inherent in our financial instruments and in our financial position reflects the potential losses arising 
from adverse changes in interest rates and concentration of credit risk. As of December 31, 2017, we had cash and 
cash equivalents and marketable securities of $292.7 million consisting of bank deposits, interest-bearing money 
market accounts and U.S. treasuries. Our primary exposure to market risk is interest rate sensitivity, which is 
affected by changes in the general level of U.S. interest rates. As of December 31, 2017, our cash equivalents and 
marketable securities have an average maturity of approximately six months and the longest maturity is 14 months. 
Due to the short-term duration and the lower risk profile of our marketable securities, an immediate 100 basis point 
change in interest rates would not have a material effect on the fair market value of our cash equivalents and 
marketable securities. We have the ability to hold our marketable securities until maturity, and we therefore do not 
expect a change in market interest rates to affect our operating results or cash flows to any significant degree. 

Item 8. Financial Statements and Supplementary Data. 

The financial statements required by this item are set forth beginning on page F-1 of this Annual Report on Form 
10-K. 

Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure. 

None. 

Item 9A. Controls and Procedures. 

Evaluation of Disclosure Controls and Procedures 

As of December 31, 2017, management, with the participation of our disclosure committee, performed an evaluation 
of the effectiveness of the design and operation of our disclosure controls and procedures as defined in Rules 13a-
15(e) and 15d-15(e) of the Exchange Act. Our disclosure controls and procedures are designed to ensure that 
information required to be disclosed in the reports we file or submit under the Exchange Act is recorded, processed, 
summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information 
is accumulated and communicated to our management, including the Chief Executive Officer and the Chief 
Financial Officer, to allow timely decisions regarding required disclosures. 

Any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of 
achieving the desired control objective. Based on this evaluation, our Chief Executive Officer and Chief Financial 
Officer concluded that, as of December 31, 2017, the design and operation of our disclosure controls and procedures 
were effective. 

Management’s Annual Report on Internal Control over Financial Reporting 

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, 
as such term is defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act. Our internal control over financial 
reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and 
the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting 
principles, or GAAP. Our internal control over financial reporting includes those policies and procedures that: 
(i) pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and 
dispositions of our assets, (ii) provide reasonable assurance that transactions are recorded as necessary to permit 
preparation of financial statements in accordance with GAAP, and that our receipts and expenditures are being made 
only in accordance with authorizations of our management and directors, and (iii) provide reasonable assurance 
regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have 
a material effect on our financial statements. 

81

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. 
Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become 
inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may 
deteriorate. 

Under the supervision and with the participation of our management, including our Chief Executive Officer and 
Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial 
reporting as of December 31, 2017 based on the criteria established in Internal Control - Integrated Framework 
issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework), or COSO. 
Based on our evaluation under the criteria set forth in Internal Control - Integrated Framework issued by COSO, our 
management concluded our internal control over financial reporting was effective as of December 31, 2017. 

Our independent registered public accounting firm, Ernst & Young LLP, audited the effectiveness of our internal 
control over financial reporting. Ernst & Young LLP has issued their attestation report which is included herein.

Changes in Internal Control over Financial Reporting. 

There have been no significant changes in our internal control over financial reporting during our most recent fiscal 
quarter that materially affected, or is reasonably likely to materially affect, our internal control over financial 
reporting.

82

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Five Prime Therapeutics, Inc.

Opinion on Internal Control over Financial Reporting

We have audited Five Prime Therapeutics, Inc. (the “Company”) internal control over financial reporting as of 
December 31, 2017, based on criteria established in Internal Control—Integrated Framework issued by the 
Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In 
our opinion, Five Prime Therapeutics, Inc. maintained, in all material respects, effective internal control over 
financial reporting as of December 31, 2017, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board 
(United States) (PCAOB), the balance sheets of the Company as of December 31, 2017 and 2016, and the related 
statements of operations, comprehensive income (loss), stockholders’ equity and cash flows for each of the three 
years in the period ended December 31, 2017 and the related notes, and our report dated February 27, 2018 
expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting, and 
for its assessment of the effectiveness of internal control over financial reporting included in the accompanying 
Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an 
opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting 
firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with 
the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission 
and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and 
perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting 
was maintained in all material respects. Our audit included obtaining an understanding of internal control over 
financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and 
operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we 
considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance 
regarding the reliability of financial reporting and the preparation of financial statements for external purposes in 
accordance with generally accepted accounting principles. A company’s internal control over financial reporting 
includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, 
accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable 
assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance 
with generally accepted accounting principles, and that receipts and expenditures of the company are being made 
only in accordance with authorizations of management and directors of the company; and (3) provide reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s 
assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect 
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that 
controls may become inadequate because of changes in conditions, or that the degree of compliance with the 
policies or procedures may deteriorate.

/s/ Ernst & Young LLP 
San Francisco, California 
February 27, 2018

83

Item 9B. Other Information.

None.

84

PART III 

Item 10. Directors, Executive Officers and Corporate Governance. 

The information required by this item is incorporated by reference to the information set forth in the sections titled 
“Information About Our Board of Directors” and “Information About Our Executive Officers Who Are Not 
Directors,” “Corporate Governance,” “Corporate Governance – Code of Business Conduct and Ethics,” “Section 
16(a) Beneficial Ownership Reporting Compliance,” “Corporate Governance – Committees of the Board of 
Directors – Nominating and Corporate Governance Committee,” “Corporate Governance – Committees of the Board 
of Directors – Audit Committee” and “Corporate Governance – Committees of the Board of Directors – 
Compensation Committee” in our Proxy Statement. 

Item 11. Executive Compensation. 

The information required by this item is incorporated by reference to the information set forth in the sections titled 
“Executive Compensation,” “Director Compensation” and “Committees of the Board of Directors — Compensation 
Committee Interlocks and Insider Participation” in our Proxy Statement. 

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 
Matters. 

The information required by this item is incorporated by reference to the information set forth in the sections titled 
“Securities Authorized For Issuance Under Equity Compensation Plans” and “Security Ownership of Certain 
Beneficial Owners and Management” in our Proxy Statement. 

Item 13. Certain Relationships and Related Transactions, and Director Independence. 

The information required by this item is incorporated by reference to the information set forth in the sections titled 
“Corporate Governance – Board of Directors Independence” and “Transactions With Related Persons” in our Proxy 
Statement. 

Item 14. Principal Accountant Fees and Services. 

The information required by this item is incorporated by reference to the information set forth in the sections titled 
“Independent Registered Public Accounting Firm Fees and Services” in our Proxy Statement. 

85

PART IV 

Item 15. Exhibits and Financial Statement Schedules. 

The financial statements schedules and exhibits filed as part of this Annual Report on Form 10-K are as follows: 

(a)(1) Financial Statements 

Reference is made to the financial statements included in Item 8 of Part II hereof. 

(a)(2) Financial Statement Schedules 

All other schedules are omitted because they are not required or the required information is included in the financial 
statements or notes thereto. 

(a)(3) Exhibits 

The exhibits required to be filed as part of this report are listed in the Exhibit List attached hereto and are 
incorporated herein by reference.

Exhibit
No.

Description

  3.1

  3.2

  4.1

10.1+

10.2+

10.3+

10.4+

10.5+

10.6+

10.7+

Amended and Restated Certificate of Incorporation (incorporated herein by reference to Exhibit 3.1 
to the company’s Current Report on Form 8-K (File No. 001-36070), filed with the SEC on 
September 23, 2013).

Amended and Restated Bylaws (incorporated herein by reference to Exhibit 3.4 to the company’s 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Specimen common stock certificate (incorporated herein by reference to Exhibit 4.1 to the 
company’s Amendment No. 3 to the Registration Statement on Form S-1 (File No. 333-190194), 
filed with the SEC on September 4, 2013).

2002 Equity Incentive Plan (incorporated herein by reference to Exhibit 10.2 to the company’s 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Form of Option Agreement under 2002 Equity Incentive Plan (incorporated herein by reference to 
Exhibit 10.3 to the company’s Registration Statement on Form S-1 (File No. 333-190194), filed with 
the SEC on July 26, 2013).

2010 Equity Incentive Plan (incorporated herein by reference to Exhibit 10.4 to the company’s 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Form of Option Agreement under 2010 Equity Incentive Plan (incorporated herein by reference to 
Exhibit 10.5 to the company’s Registration Statement on Form S-1 (File No. 333-190194), filed with 
the SEC on July 26, 2013).

2013 Omnibus Incentive Plan (incorporated herein by reference to Exhibit 4.8 to the company’s 
Registration Statement on Form S-8 (File No. 333-191700), filed with the SEC on October 11, 2013).

Amendment No. 1 to Omnibus Incentive Plan (incorporated herein by reference to Exhibit 10.4 to the 
company’s Quarterly Report on Form 10-Q (File No. 001-36070), filed with the SEC on November 
6, 2017)

Form of Incentive Stock Option Agreement under 2013 Omnibus Incentive Plan (incorporated herein 
by reference to Exhibit 10.7 to the company’s Registration Statement on Form S-1 (File No. 333-
190194), filed with the SEC on July 26, 2013).

86

 
 
 
 
 
 
 
 
 
 
 
Exhibit
No.

Description

10.8+

10.9+

10.10+

10.11+

10.12+

10.13+

10.14+

10.15+

10.16+

10.17+

10.18+

10.19+

10.20+

10.21+

10.22+

10.23+

Form of Non-Qualified Option Agreement under 2013 Omnibus Incentive Plan (incorporated herein 
by reference to Exhibit 10.8 to the company’s Registration Statement on Form S-1 (File No. 333-
190194), filed with the SEC on July 26, 2013).

Form of Restricted Stock Agreement under 2013 Omnibus Incentive Plan (incorporated herein by 
reference to Exhibit 10.9 to the company’s Registration Statement on Form S-1 (File No. 333-
193491), filed with the SEC on January 22, 2014).

2013 Employee Stock Purchase Plan (incorporated herein by reference to Exhibit 4.11 to the company’s 
Registration Statement on Form S-8 (File No. 333-191700), filed with the SEC on October 11, 2013).

Offer Letter Agreement by and between the company and Aron M. Knickerbocker, dated as of 
October 18, 2017 (incorporated herein by reference to Exhibit 10.2 to the company’s Quarterly 
Report on Form 10-Q (File No. 001-36070), filed with the SEC on November 6, 2017).

Offer Letter Agreement by and between the company and Marc L. Belsky, dated as of September 3, 
2009 (incorporated herein by reference to Exhibit 10.12 to the company’s Registration Statement on 
Form S-1 (File No. 333-193491), filed with the SEC on January 22, 2014).

Offer Letter Agreement by and between the company and Francis Sarena, dated as of December 2, 
2010 (incorporated herein by reference to Exhibit 10.10 to the company’s Registration Statement on 
Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Offer Letter Agreement by and between the company and Robert Sikorski, dated as of August 22, 
2014 (incorporated herein by reference to Exhibit 10.14 to the company’s Annual Report on Form 
10-K (File No. 001-36070), filed with the SEC on February 24, 2017).

Confidential Resignation Agreement and General Release of Claims by and between the Company and 
Robert Sikorski, dated as of April 30, 2017 (incorporated herein by reference to Exhibit 10.1 to the 
company’s Quarterly Report on Form 10-Q (File No. 001-36070), filed with the SEC on May 5, 2017).

Offer Letter Agreement by and between the company and Kevin Baker, dated as of January 7, 2016 
(incorporated herein by reference to Exhibit 10.15 to the company’s Annual Report on Form 10-K 
(File No. 001-36070), filed with the SEC on February 24, 2017).

Offer Letter Agreement by and between the company and Lewis T. Williams, dated as of November 
17, 2017.

Offer Letter by and between the company and Helen Collins, dated as of May 12, 2016.

Executive Severance Benefits Agreement by and between the company and Lewis T. Williams, dated 
as of April 19, 2007 (incorporated herein by reference to Exhibit 10.11 to the company’s Registration 
Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Executive Severance Benefits Agreement by and between the company and Aron M. Knickerbocker, 
dated as of December 30, 2009 (incorporated herein by reference to Exhibit 10.12 to the company’s 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Amendment No. 1 to the Executive Severance Benefits Agreement by and between the company and 
Aron M. Knickerbocker, effective December 5, 2012 (incorporated herein by reference to Exhibit 
10.13 to the company’s Registration Statement on Form S-1 (File No. 333-190194), filed with the 
SEC on July 26, 2013).

Amendment No. 2 to the Executive Severance Benefits Agreement by and between the company and 
Aron M. Knickerbocker, effective October 18, 2017 (incorporated herein by reference to Exhibit 10.3 
to the company’s Quarterly Report on Form 10-Q (File No. 001-36070), filed with the SEC on 
November 6, 2017).

Executive Severance Benefits Agreement by and between the company and Marc L. Belsky, dated as 
of December 30, 2009 (incorporated herein by reference to Exhibit 10.17 to the company’s 
Registration Statement on Form S-1 (File No. 333-193491), filed with the SEC on January 22, 2014).

87

 
 
 
 
 
 
 
 
 
 
 
 
Exhibit
No.

10.24+

10.25+

10.26+

10.27+

10.28+

10.29+

10.30+

10.31+

10.32+

10.33+

10.34+

10.35+

10.36

10.37†

10.38†

Description

Executive Severance Benefits Agreement by and between the company and Francis Sarena, dated as 
of February 18, 2011 (incorporated herein by reference to Exhibit 10.14 to the company’s 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Amendment No. 1 to the Executive Severance Benefits Agreement by and between the company and 
Francis Sarena, effective May 8, 2013 (incorporated herein by reference to Exhibit 10.15 to the company’s 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

Amendment No. 1 to the Executive Severance Benefits Agreement by and between the company and 
Marc Belsky, effective January 16, 2014 (incorporated herein by reference to Exhibit 10.18 to the 
company’s Registration Statement on Form S-1 (File No. 333-193491), filed with the SEC on 
January 22, 2014).

Executive Severance Benefits Agreement by and between the company and Robert Sikorski, dated as 
of September 17, 2014 (incorporated herein by reference to Exhibit 10.23 to the company’s Annual 
Report on Form 10-K (File No. 001-36070), filed with the SEC on February 24, 2017).

Amendment No. 1 to the Executive Severance Benefits Agreement by and between the company and 
Robert Sikorski, dated as of January 21, 2016 (incorporated herein by reference to Exhibit 10.24 to the 
company’s Annual Report on Form 10-K (File No. 001-36070), filed with the SEC on February 24, 2017).

Executive Severance Benefits Agreement by and between the company and Kevin P. Baker, dated as 
of February 1, 2016 (incorporated herein by reference to Exhibit 10.25 to the company’s Annual 
Report on Form 10-K (File No. 001-36070), filed with the SEC on February 24, 2017).

Executive Severance Benefits Agreement by and between the company and Helen Collins, dated as 
of March 20, 2017.

Form of Retention Award Agreement (incorporated herein by reference to Exhibit 10.1 to the 
company’s Current Report on Form 8-K (File No. 001-36070), filed with the SEC on May 4, 2015).

Form of Restricted Stock Agreement (incorporated herein by reference to Exhibit 10.27 to the company’s 
Annual Report on Form 10-K (File No. 001-36070), filed with the SEC on February 24, 2017).

Annual Bonus Plan, effective August 21, 2017 (incorporated herein by reference to Exhibit 10.1 to 
the company’s Quarterly Report on Form 10-Q (File No. 001-36070), filed with the SEC on 
November 6, 2017).

Annual Bonus Plan, effective January 1, 2018.

Form of Indemnification Agreement by and between the company and each of its directors and 
officers (incorporated herein by reference to Exhibit 10.16 to the company’s Amendment No. 1 to the 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on August 16, 2013).

Lease by and between the company and HCP Oyster Point III LLC, dated as of December 12, 2016 
(incorporated herein by reference to Exhibit 10.34 to the company’s Annual Report on Form 10-K 
(File No. 001-36070), filed with the SEC on February 24, 2017). 

Exclusive License Agreement by and between the company and Galaxy Biotech, LLC, dated as of 
December 22, 2011 (incorporated herein by reference to Exhibit 10.23 to the company’s Amendment 
No. 1 to the Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on 
August 16, 2013).

Amendment to the Exclusive License Agreement by and between the company and Galaxy Biotech, 
LLC, dated as of May 16, 2016 (incorporated herein by reference to Exhibit 10.1 to the company’s 
quarterly report on Form 10-Q (File No. 001-36070), filed with the SEC on August 5, 2016).

10.39††

Amendment No. 2 to the Exclusive License Agreement by and between the company and Galaxy 
Biotech, LLC, dated as of May 30, 2017.

88

 
 
 
 
 
 
Exhibit
No.

10.40†

10.41†

10.42†

10.43†

Description

Non-Exclusive License Agreement by and among the company, BioWa, Inc. and Lonza Sales AG, 
dated as of February 6, 2012 (incorporated herein by reference to Exhibit 10.30 to the company’s 
Amendment No. 1 to the Registration Statement on Form S-1 (File No. 333-190194), filed with the 
SEC on August 16, 2013).

Research Collaboration and License Agreement, dated as of March 14, 2014, by and between the 
company and Bristol-Myers Squibb Company (incorporated herein by reference to Exhibit 10.1 to 
Amendment No. 1 the company’s Quarterly Report on Form 10-Q (File No. 001-36070), filed with 
the SEC on August 26, 2014).

Amendment No. 1 to the Research Collaboration and License Agreement, dated as of January 21, 
2016, by and between the company and Bristol-Myers Squibb Company (incorporated herein by 
reference to Exhibit 10.47 to the company’s Annual Report on Form 10-K (File No. 001-36070), 
filed with the SEC on March 11, 2016).

License and Collaboration Agreement, dated as of October 14, 2015, by and between the company and 
Bristol-Myers Squibb Company (incorporated herein by reference to Exhibit 10.49 to the company’s 
Annual Report on Form 10-K (File No. 001-36070), filed with the SEC on March 11, 2016).

10.44††

License and Collaboration Agreement, dated as of December 19, 2017, by and between the company 
and Zai Lab (Shanghai) Co., Ltd.

21.1

23.1*

24.1

31.1*

31.2*

32.1*

32.2*

Subsidiaries of the company (incorporated herein by reference to Exhibit 21.1 to the company’s 
Registration Statement on Form S-1 (File No. 333-190194), filed with the SEC on July 26, 2013).

  Consent of Independent Registered Accounting Firm.

  Power of Attorney (included on the signature page to this report).

Certification of Principal Executive Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated 
under the Securities Exchange Act of 1934, as amended.

Certification of Principal Financial Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated 
under the Securities Exchange Act of 1934, as amended.

Certifications of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

Certifications of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to 
Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS

  XBRL Instance Document.

101.SCH

XBRL Taxonomy Extension Schema Document.

101.CAL

XBRL Taxonomy Extension Calculation Linkbase Document.

101.DEF

XBRL Taxonomy Extension Definition Linkbase Document.

101.LAB

XBRL Taxonomy Extension Labels Linkbase Document.

101.PRE

XBRL Taxonomy Extension Presentation Linkbase Document.

*

+
†

††

Furnished herewith and not deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 
1934, as amended (the “Exchange Act”), and shall not be deemed to be incorporated by reference into any 
filing under the Securities Act of 1933, as amended, or the Exchange Act.
Indicates a management contract or compensatory plan. 
Confidential treatment has been granted for certain portions of this exhibit. These portions have been omitted 
and filed separately with the SEC.
Confidential treatment has been requested for certain portions of this exhibit. These portions have been 
omitted and filed separately with the SEC. 

89

 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the 

registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. 

SIGNATURES 

Date: February 27, 2018

Date: February 27, 2018

Five Prime Therapeutics, Inc.
(Registrant)

/s/ Aron Knickerbocker 
Aron Knickerbocker
President and Chief Executive Officer
(Principal Executive Officer)

/s/ Marc L. Belsky
Marc L. Belsky
Senior Vice President and Chief Financial Officer
(Principal Financial and Accounting Officer)

90

 
 
 
 
 
POWER OF ATTORNEY 

Each person whose individual signature appears below hereby authorizes and appoints Aron Knickerbocker 

and Francis W. Sarena, and each of them, with full power of substitution and resubstitution and full power to act 
without the other, as his or her true and lawful attorney-in-fact and agent to act in his or her name, place and stead 
and to execute in the name and on behalf of each person, individually and in each capacity stated below, and to file 
any and all amendments to this report on Form 10-K, and to file the same, with all exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-
fact and agents, and each of them, full power and authority to do and perform each and every act and thing, ratifying 
and confirming all that said attorneys-in-fact and agents or any of them or their or his substitute or substitutes may 
lawfully do or cause to be done by virtue thereof. 

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this report on Form 10-K 

has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates 
indicated.

Signature

Title

Date

/s/ Aron Knickerbocker
Aron Knickerbocker

/s/ Marc. L. Belsky
Marc L. Belsky

/s/ Lewis T. Williams, M.D., Ph.D.
Lewis T. Williams, M.D., Ph.D.

/s/ Franklin M. Berger
Franklin M. Berger

Chief Executive Officer, 
President and Director
(Principal Executive Officer)

  February 27, 2018

Senior Vice President and 
Chief Financial Officer
(Principal Financial and Accounting Officer)

  February 27, 2018

  Executive Chairman and Director 

  February 27, 2018

  Director

  February 27, 2018

/s/ Fred E. Cohen, M.D., D.Phil.
Fred E. Cohen, M.D., D.Phil.

  Director

  February 27, 2018

91

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Signature

Title

Date

/s/ Kapil Dhingra, M.B.B.S.
Kapil Dhingra, M.B.B.S.

/s/ Garry Nicholson
Garry Nicholson

/s/ Sheila Gujrathi, M.D.
Sheila Gujrathi, M.D.

/s/ Peder K. Jensen, M.D.
Peder K. Jensen, M.D.

/s/ Mark McDade
Mark McDade

/s/ William Ringo
William Ringo

  Director

  Director

  Director

  Director

  Director

  Director

  February 27, 2018

  February 27, 2018

  February 27, 2018

  February 27, 2018

  February 27, 2018

  February 27, 2018

92

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FIVE PRIME THERAPEUTICS, INC. 
FINANCIAL STATEMENTS 
YEARS ENDED DECEMBER 31, 2017, 2016 AND 2015 

Index 

Report of Independent Registered Public Accounting Firm ...............................................................................
Audited Financial Statements:

PAGE
F-2

Balance Sheets...........................................................................................................................................
Statements of Operations...........................................................................................................................
Statements of Comprehensive Income (Loss)...........................................................................................
Statements of Stockholders’ Equity ..........................................................................................................
Statements of Cash Flows .........................................................................................................................
Notes to Financial Statements ...................................................................................................................

F-3
F-4
F-5
F-6
F-7
F-8

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Stockholders and the Board of Directors of Five Prime Therapeutics, Inc. 

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Five Prime Therapeutics, Inc. (the “Company”) as of 
December 31, 2017 and 2016, and the related statements of operations, comprehensive income (loss), stockholders’ 
equity and cash flows for each of the three years in the period ended December 31, 2017, and the related notes 
(collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all 
material respects, the financial position of the Company at December 31, 2017 and 2016, and the results of its 
operations and its cash flows for each of the three years in the period ended December 31, 2017, in conformity with 
U.S. generally accepted accounting principles. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2017, based on 
criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations 
of the Treadway Commission (2013 framework), and our report dated February 27, 2018 expressed an unqualified 
opinion thereon.

Basis for Opinion 

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an 
opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with 
the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal 
securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the 
PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and 
perform the audit to obtain reasonable assurance about whether the financial statements are free of material 
misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of 
material misstatement of the financial statements, whether due to error or fraud, and performing procedures that 
respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and 
disclosures in the financial statements. Our audits also included evaluating the accounting principles used and 
significant estimates made by management, as well as evaluating the overall presentation of the financial statements. 
We believe that our audits provide a reasonable basis for our opinion. 

/s/ Ernst & Young LLP 

We have served as the Company’s auditor since 2003

San Francisco, California 

February 27, 2018

F-2

FIVE PRIME THERAPEUTICS, INC. 

Balance Sheets 
(In thousands, except share and per share amounts) 

Assets
Current assets:

Cash and cash equivalents ..........................................................................................  $
Marketable securities .................................................................................................. 
Receivable from collaborative partners ...................................................................... 
Income tax receivable ................................................................................................. 
Prepaid and other current assets.................................................................................. 
Total current assets............................................................................................................ 
Restricted cash .................................................................................................................. 
Property and equipment, net ............................................................................................. 
Other long-term assets ...................................................................................................... 
Total assets........................................................................................................................  $

Liabilities and stockholders’ equity
Current liabilities:

Accounts payable ........................................................................................................  $
Accrued personnel-related expenses........................................................................... 
Other accrued liabilities .............................................................................................. 
Deferred revenue, current portion............................................................................... 
Deferred rent, current portion ..................................................................................... 
Total current liabilities ...................................................................................................... 
Deferred revenue, long-term portion ................................................................................ 
Deferred rent, long-term portion....................................................................................... 
Other long-term liabilities................................................................................................. 
Commitments and contingencies (Note 11)
Stockholders’ equity:

Common stock, $0.001 par value; 100,000,000 shares authorized, 28,982,056 
issued and 28,178,639 outstanding at December 31, 2017. 28,550,006 issued and 
27,509,077 outstanding at December 31, 2016........................................................... 

   Preferred stock, $0.001 par value, 10,000,000 shares authorized;
   no shares issued and outstanding ................................................................................ 
Additional paid-in capital ........................................................................................... 
Accumulated other comprehensive loss...................................................................... 
Accumulated deficit .................................................................................................... 
Total stockholders’ equity................................................................................................. 
Total liabilities and stockholders’ equity ..........................................................................  $

December 31,

2017

2016

59,790    $
232,900   
13,133   
—   
5,367   
311,190   
1,543   
30,762   
552   
344,047    $

2,237    $
7,156   
27,519   
12,713   
1,356   
50,981   
10,223   
17,641   
—   

7,653 
414,095 
3,959 
4,670 
9,748 
440,125 
1,543 
6,207 
406 
448,281 

334 
7,957 
15,435 
14,150 
865 
38,741 
17,856 
— 
109 

28   

27 

—   
421,257   
(476)  
(155,607)  
265,202   
344,047    $

— 
396,635 
(39)
(5,048)
391,575 
448,281  

The accompanying notes are an integral part of these financial statements. 

F-3

  
 
 
 
 
 
   
 
 
   
   
   
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
   
   
   
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
  
FIVE PRIME THERAPEUTICS, INC. 

Statements of Operations 
(In thousands except per share amounts) 

Collaboration and license revenue ....................................................   $
Operating expenses:

Research and development ..........................................................    
General and administrative ..........................................................    
Total operating expenses...................................................................    
Operating income (loss) ....................................................................    
Interest income ..................................................................................    
Other expense, net.............................................................................    
Income (loss) before income tax .......................................................    
Income tax benefit (provision) ..........................................................    
Net income (loss) ..............................................................................   $

Year Ended December 31,
2016

2017

39,508    $

30,691    $

2015
379,801 

150,908     
40,002     
190,910     
(151,402)    
2,978     
(94)    
(148,518)    
(1,704)    
(150,222)   $

94,072     
35,831     
129,903     
(99,212)    
2,467     
—     
(96,745)    
31,048     
(65,697)   $

70,197 
22,631 
92,828 
286,973 
487 
(3)
287,457 
(37,810)
249,647 

Net income (loss) per share attributable to common stockholders:

Basic ............................................................................................   $
Diluted .........................................................................................   $

(5.38)   $
(5.38)   $

(2.44)   $
(2.44)   $

9.73 
9.23 

Weighted-average shares used to compute net income (loss) per
   share attributable to common stockholders:

Basic ............................................................................................    
Diluted .........................................................................................    

27,945     
27,945     

26,955     
26,955     

25,661 
27,035  

The accompanying notes are an integral part of these financial statements. 

F-4

  
 
 
 
 
 
   
   
 
     
       
       
 
 
   
      
      
  
     
       
       
 
     
       
       
 
  
FIVE PRIME THERAPEUTICS, INC. 

Statements of Comprehensive Income (Loss) 
(In thousands) 

Net income (loss) ..............................................................................   $
Other comprehensive gain (loss):

Year Ended December 31,
2016

(65,697)   $

2017
(150,222)   $

2015
249,647 

Unrealized gain (loss) on marketable securities, net of tax .........    
Comprehensive income (loss) ...........................................................   $

(437)    
(150,659)   $

35     
(65,662)   $

(75)
249,572  

The accompanying notes are an integral part of these financial statements. 

F-5

  
 
 
 
 
 
   
   
 
     
       
       
 
  
.

C
N
I

,

S
C
I
T
U
E
P
A
R
E
H
T
E
M
I
R
P
E
V
I
F

y
t
i
u
q
E

’
s
r
e
d
l
o
h
k
c
o
t
S
f
o

s
t
n
e
m
e
t
a
t
S

)
a
t
a
d

e
r
a
h
s

t
p
e
c
x
e

,
s
d
n
a
s
u
o
h
t

n
I
(

'
s
r
e
d
l
o
h
k
c
o
t
S

d
e
t
a
l
u
m
u
c
c
A

(

e
v
i
s
n
e
h
e
r
p
m
o
C

y
t
i
u
q
E

)
t
i
c
i
f
e
D

)
s
s
o
L

(

e
m
o
c
n
I

l
a
t
o
T

d
e
n
i
a
t
e
R

s
g
n
i
n
r
a
E

d
e
t
a
l
u
m
u
c
c
A

r
e
h
t
O

l
a
n
o
i
t
i
d
d
A

n
I
-
d
i
a
P

l
a
t
i
p
a
C

k
c
o
t
S
n
o
m
m
o
C

t
n
u
o
m
A

s
e
r
a
h
S

5
0
2
,
5
8

$

)
8
9
9
,
8
8
1
(

$

1

$

0
8
1
,
4
7
2

 $

2
2

$

4
9
4
,
0
8
6
,
1
2

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
4
1
0
2

,
1
3

r
e
b
m
e
c
e
D

t
a

s
e
c
n
a
l
a
B

3
9
6
,
8
7

)
5
7
(

9
6
2
,
8

7
6
4
,
1
1

7
4
6
,
9
4
2

6
0
2
,
3
3
4

5
3

0
0
2
,
5

)
4
5
0
,
4
1
(

5
8
8
,
2
3

)
7
9
6
,
5
6
(

5
7
5
,
1
9
3

2
2
0
,
4

)
9
0
9
,
3
1
(

—

)
7
3
4
(

3
7
1
,
4
3

)
2
2
2
,
0
5
1
(

2
0
2
,
5
6
2

—

—

—

—

9
4
6
,
0
6

7
4
6
,
9
4
2

—

—

—

—

)
8
4
0
,
5
(

)
7
9
6
,
5
6
(

)
7
3
3
(

$

)
2
2
2
,
0
5
1
(

)
7
0
6
,
5
5
1
(

—

—

—

)
5
7
(

—

)
4
7
(

—

—

—

5
3

—

)
9
3
(

)
7
3
4
(

—

—

0
9
6
,
8
7

8
6
2
,
8

7
6
4
,
1
1

5
0
6
,
2
7
3

—

—

9
9
1
,
5

)
4
5
0
,
4
1
(

5
8
8
,
2
3

1
2
0
,
4

5
3
6
,
6
9
3

)
9
0
9
,
3
1
(

7
3
3

3
7
1
,
4
3

3

1

—

—

—

6
2

1

—

—

—

—

7
2

1

4
9
9
,
9
2
8
,
3

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
s
t
s
o
c

e
c
n
a
u
s
s
i

8
9
3
,
6
0
6

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

s
t
i
f
e
n
e
b

x
a
t

s
s
e
c
x
e

d
e
t
a
l
e
r

d
n
a

s
n
a
l
p

e
v
i
t
n
e
c
n
i

y
t
i
u
q
e

r
e
d
n
u

k
c
o
t
s

n
o
m
m
o
c

f
o

e
c
n
a
u
s
s
I

f
o

t
e
n

,
g
n
i
r
e
f
f
o

n
o
-
w
o
l
l
o
f

n
o
p
u

k
c
o
t
s

n
o
m
m
o
c

f
o
e
c
n
a
u
s
s
I

—

—

—

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

e
s
n
e
p
x
e

n
o
i
t
a
s
n
e
p
m
o
c

d
e
s
a
b
-
k
c
o
t
S

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
s
s
o
l

e
v
i
s
n
e
h
e
r
p
m
o
c

r
e
h
t
O

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
e
m
o
c
n
i

t
e
N

6
8
8
,
6
1
1
,
6
2

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
5
1
0
2

,
1
3

r
e
b
m
e
c
e
D

t
a

s
e
c
n
a
l
a
B

—

—

—

)
9
4
1
,
8
3
3
(

0
4
3
,
0
3
7
,
1

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

s
t
i
f
e
n
e
b

x
a
t

s
s
e
c
x
e

d
e
t
a
l
e
r

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
s
n
o
i
t
a
g
i
l
b
o

g
n
i
d
l
o
h
h
t
i

w
x
a
t

y
f
s
i
t
a
s

o
t

s
e
r
a
h
s

f
o
e
s
a
h
c
r
u
p
e
R

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

e
s
n
e
p
x
e

n
o
i
t
a
s
n
e
p
m
o
c

d
e
s
a
b
-
k
c
o
t
S

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
n
i
a
g

e
v
i
s
n
e
h
e
r
p
m
o
c

r
e
h
t
O

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
s
s
o
l

t
e
N

d
n
a

s
n
a
l
p

e
v
i
t
n
e
c
n
i

y
t
i
u
q
e

r
e
d
n
u

k
c
o
t
s

n
o
m
m
o
c

f
o

e
c
n
a
u
s
s
I

7
7
0
,
9
0
5
,
7
2

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
6
1
0
2

,
1
3

r
e
b
m
e
c
e
D

t
a

s
e
c
n
a
l
a
B

6
5
5
,
2
9
9

)
4
9
9
,
2
2
3
(

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

s
n
a
l
p

e
v
i
t
n
e
c
n
i

y
t
i
u
q
e

r
e
d
n
u

k
c
o
t
s

n
o
m
m
o
c

f
o
e
c
n
a
u
s
s
I

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
s
n
o
i
t
a
g
i
l
b
o

g
n
i
d
l
o
h
h
t
i

w
x
a
t

y
f
s
i
t
a
s

o
t

s
e
r
a
h
s

f
o
e
s
a
h
c
r
u
p
e
R

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
9
0
-
6
1
0
2
U
S
A

f
o

n
o
i
t
p
o
d
a

f
o

t
c
e
f
f
e

e
v
i
t
a
l
u
m
u
C

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

e
s
n
e
p
x
e

n
o
i
t
a
s
n
e
p
m
o
c

d
e
s
a
b
-
k
c
o
t
S

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
s
s
o
l

e
v
i
s
n
e
h
e
r
p
m
o
c

r
e
h
t
O

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
s
s
o
l

t
e
N

.
s
t
n
e
m
e
t
a
t
s

l
a
i
c
n
a
n
i
f

e
s
e
h
t

f
o

t
r
a
p

l
a
r
g
e
t
n
i

n
a

e
r
a

s
e
t
o
n

g
n
i
y
n
a
p
m
o
c
c
a

e
h
T

$

)
6
7
4
(

$

7
5
2
,
1
2
4

$

8
2

$

9
3
6
,
8
7
1
,
8
2

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
7
1
0
2
,
1
3
r
e
b
m
e
c
e
D

t
a
s
e
c
n
a
l
a
B

6
-
F

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
 
 
  
 
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FIVE PRIME THERAPEUTICS, INC. 

Statements of Cash Flows 
(In thousands) 

Operating activities
Net income (loss)...........................................................................................  $
Adjustments to reconcile net income (loss) to net cash provided by
    (used in) operating activities:

Depreciation and amortization ................................................................   
Loss on disposal of property and equipment...........................................   
Stock-based compensation expense ........................................................   
Amortization of premium on marketable securities ................................   
Excess tax benefits from employee equity incentive plans.....................   
Deferred income taxes.............................................................................   
Changes in operating assets and liabilities:

Receivable from collaborative partners.............................................   
Income tax receivable........................................................................   
Prepaid, other current assets, and other long-term assets..................   
Restricted cash...................................................................................   
Accounts payable ..............................................................................   
Accrued personnel-related expenses .................................................   
Deferred revenue ...............................................................................   
Deferred rent .....................................................................................   
Income tax payable............................................................................   
Other accrued liabilities and other long-term liabilities....................   
Net cash provided by (used in) operating activities ......................................   
Investing activities
Purchases of marketable securities................................................................   
Maturities of marketable securities ...............................................................   
Proceeds from disposal of property and equipment ......................................   
Purchases of property and equipment............................................................   
Net cash provided by (used in) in investing activities...................................   
Financing activities
Proceeds from issuances of common stock, net of issuance costs ................   
Proceeds from issuances of common stock under equity incentive
   plans............................................................................................................   
Repurchase of shares to satisfy tax withholding ...........................................   
Excess tax benefits from employee equity incentive plans ...........................   
Net cash provided by (used in) financing activities ......................................   
Net increase (decrease) in cash and cash equivalents ...................................   
Cash and cash equivalents at beginning of year............................................   
Cash and cash equivalents at end of year ......................................................  $

Year Ended December 31,
2016

2015

2017

(150,222)   $

(65,697)    

249,647 

2,513     
95     
34,173     
1,621     
—     
—     

(9,174)    
4,670     
4,235     
—     
1,903     
(801)    
(9,070)    
3,699     
—     
4,174     
(112,184)    

(330,363)    
509,500     
12     
(4,941)    
174,208     

1,742     
9     
32,885     
4,187     
3,123     
15,071     

95     
(4,670)    
(2,999)    
(1,543)
(1,560)    
1,079     
(16,771)    
(768)    
(52,843)    
8,909     
(79,751)    

(516,752)    
466,000     
—     
(2,961)    
(53,713)    

1,678 
3 
11,467 
2,025 
3,122 
(15,071)

(3,644)
— 
(4,782)
— 
798 
2,260 
(11,789)
(513)
49,720 
4,177 
289,098 

(458,058)
222,250 
— 
(2,426)
(238,234)

—     

—     

78,693 

4,022     
(13,909)    
—     
(9,887)    
52,137     
7,653     
59,790    $

8,323     

(14,054)
(3,123)
(8,854)    
(142,318)    
149,971     
7,653    $

5,147 
— 
— 
83,840 
134,704 
15,267 
149,971 

Supplemental cash flow information
Income taxes paid ..........................................................................................  $

1,704    $

11,433    $

Supplemental schedule of noncash investing and financing activities
Unpaid property and equipment purchases included in accrued liabilities ...  $
Tenant improvements provided by the landlord............................................  $

9,033    $
14,324    $

1,232    $
—    $

— 

— 
—  

The accompanying notes are an integral part of these financial statements.

F-7

  
 
 
 
 
 
   
   
 
     
       
       
 
     
       
       
 
     
       
       
 
  
     
       
       
 
     
       
       
 
  
  
 
   
      
      
  
     
       
       
 
 
   
      
      
  
     
       
       
 
  
FIVE PRIME THERAPEUTICS, INC. 

Notes to Financial Statements 
December 31, 2017 

1. Business 

Five Prime Therapeutics, Inc. (we, us, our, or the Company) is a clinical-stage biotechnology company focused on 
discovering and developing innovative protein therapeutics. We were incorporated in December 2001 in Delaware. 
Our operations are based in South San Francisco, California and we operate in one segment. 

2. Summary of Significant Accounting Policies 

Use of Estimates 

The preparation of financial statements in conformity with accounting principles generally accepted in the 
United States of America requires management to make estimates and assumptions that affect the amounts reported 
in the financial statements and accompanying notes. Actual results could differ materially from those estimates. 

Cash and Cash Equivalents 

We consider all highly liquid investments purchased with original maturities of three months or less at the date of 
purchase to be cash equivalents. Cash equivalents are stated at fair value. 

Restricted Cash

Restricted cash consists of a certificate of deposit held by our bank as collateral for a standby letter of credit in the 
same notional amount by our landlord to secure our obligations under our corporate office and laboratory facility 
lease entered in December 2016. We are required to maintain this restricted cash balance for the duration of the 
lease, which amount is subject to reduction starting on January 1, 2023 if certain conditions are met. See Note 11 for 
further discussion on our lease.

Marketable Securities 

All marketable securities have been classified as “available-for-sale” and are carried at fair value, based upon quoted 
market prices. We consider our available-for-sale portfolio as available for use in current operations. Accordingly, 
we classify certain investments as short-term marketable securities, even though the stated maturity date may be one 
year or more beyond the current balance sheet date. Unrealized gains and losses, net of any related tax effects, are 
excluded from earnings and are included in other comprehensive income or loss and reported as a separate 
component of stockholders’ equity or deficit until realized. Realized gains and losses and declines in value judged to 
be other than temporary, if any, on available-for-sale securities are included in other income (expense), net. The cost 
of securities sold is based on the specific-identification method. We adjust the amortized cost of securities for 
amortization of premiums and accretion of discounts to maturity. We include interest on short-term investments in 
interest income. In accordance with our investment policy, management invests to diversify credit risk and only 
invests in debt securities with high credit quality, including U.S. government securities. 

We periodically evaluate whether declines in the fair value of our investments below their cost are other than 
temporary. The evaluation includes consideration of the cause of the impairment, including the creditworthiness of 
the security issuers, the number of securities in an unrealized loss position, the severity and duration of the 
unrealized losses, whether we have the intent to sell the securities, and whether it is more likely than not that we will 
be required to sell the securities before the recovery of their amortized cost basis. If we determine that the decline in 
fair value of an investment is below its accounting basis and this decline is other than temporary, we would reduce 
the carrying value of the security we hold and record a loss for the amount of such decline. We have not recorded 
any realized losses or declines in value judged to be other than temporary on our investments in debt securities. 

F-8

Concentrations of Credit Risk 

Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of cash 
and cash equivalents and marketable securities. Cash and cash equivalents and marketable securities are invested 
through banks and other financial institutions in the United States. Such deposits in the United States may be in 
excess of insured limits. 

Fair Value of Financial Instruments 

We determine the fair value of financial and nonfinancial assets and liabilities using the fair value hierarchy, which 
describes three levels of inputs that may be used to measure fair value, as follows: 

Level 1—Quoted prices in active markets for identical assets or liabilities; 

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities, quoted 
prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable 
or can be corroborated by observable market data for substantially the full term of the assets or liabilities. For our 
marketable securities, we review trading activity and pricing as of the measurement date. When sufficient quoted 
pricing for identical securities is not available, we use market pricing and other observable market inputs for 
similar securities obtained from various third-party data providers. These inputs either represent quoted prices for 
similar assets in active markets or have been derived from observable market data; and 

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the 
fair value of the assets or liabilities. 

We determine the fair value of Level 1 assets using quoted prices in active markets for identical assets. We review 
trading activity and pricing for Level 2 investments as of each measurement date. Level 2 inputs, obtained from 
various third-party data providers, represent quoted prices for similar assets in active markets and were derived from 
observable market data, or, if not directly observable, were derived from or corroborated by other observable market 
data. There were no transfers between Level 1 and Level 2 securities in the periods presented. 

In certain cases where there is limited activity or less transparency around inputs to valuation, securities are 
classified as Level 3 within the valuation hierarchy. 

The following table summarizes our financial instruments that were measured at fair value on a recurring basis by 
level of input within the fair value hierarchy defined above (in thousands): 

December 31, 2017

  Total

   Basis of Fair Value Measurements  
   Level 1    Level 2    Level 3  

Assets
Money market funds .........................................   $ 31,802   $ 31,802   $
U.S. Treasury securities....................................     232,900     232,900    
Certificate of deposit.........................................    
—    
Total..................................................................   $ 266,245   $ 264,702   $

1,543    

—   $
—    
1,543    
1,543   $

— 
— 
— 
—  

December 31, 2016

  Total

   Basis of Fair Value Measurements  
   Level 1    Level 2    Level 3  

Assets
Money market funds .........................................   $
432   $
U.S. Treasury securities....................................     414,095     414,095    
0    
Certificate of deposit.........................................    
Total..................................................................   $ 416,070   $ 414,527   $

1,543    

432   $

—   $
—    
1,543    
—   $

— 
— 
0 
—  

F-9

  
 
 
 
 
     
 
     
      
      
      
 
  
 
 
 
 
     
 
     
      
      
      
 
Property and Equipment 

Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful 
lives of the assets, ranging from three to five years. Leasehold improvements are amortized over the shorter of their 
estimated useful lives or the related lease term. 

Impairment of Long-Lived Assets 

Long-lived assets include property and equipment. We review the carrying value of long-lived assets for impairment 
whenever events or changes in circumstances indicate that the assets may not be recoverable. We recognize an 
impairment loss when the total estimated future cash flows expected to result from the use of the asset and its 
eventual disposition are less than the carrying amount. Through December 31, 2017, there have been no such 
impairment losses. 

Revenue Recognition

We recognize revenue when all of the following criteria are met: persuasive evidence of an arrangement exists; 
transfer of technology has been completed or services have been rendered; our price to the customer is fixed or 
determinable, and collectability is reasonably assured. 

The terms of our collaborative research and development agreements include upfront and license fees, research 
funding, milestone and other contingent payments to us for the achievement of defined collaboration objectives and 
certain preclinical, clinical, regulatory and sales-based events, as well as royalties on sales of any commercialized 
products. 

Multiple-Element Revenue Arrangements. Our collaborations primarily represent multiple-element revenue 
arrangements. To account for these transactions, we determine the elements, or deliverables, included in the 
arrangement and determine which deliverables are separable for accounting purposes. We consider delivered items 
to be separable if the delivered items have stand-alone value to the customer. If the delivered items are separable, we 
allocate arrangement consideration to the various elements based on each element’s relative selling price. The 
identification of individual elements in a multiple-element arrangement and the estimation of the selling price of 
each element involve significant judgment, including consideration as to whether each delivered element has 
standalone value to the customer. The revenue recognition standard established the hierarchy of determining the 
estimated selling price for deliverables within each agreement using vendor-specific objective evidence, or VSOE, 
of selling price, if available, or third-party evidence of selling price if VSOE is not available, or our best estimate of 
selling price, if neither VSOE nor third-party evidence is available. Determining the best estimate of selling price for 
a deliverable requires significant judgment. We use our best estimate of selling price to estimate the selling price for 
licenses to our proprietary technology since the VSOE or third-party evidence of selling price for these deliverables 
is not available. 

F-10

We recognize consideration allocated to an individual element when all other revenue recognition criteria are met 
for that element. Our multiple-element revenue arrangements generally include the following: 

•

Exclusive Licenses. The deliverables under our collaboration agreements generally include exclusive 
licenses to discover, develop, manufacture and commercialize certain compounds. To account for this 
element of the arrangement, we evaluate whether the exclusive license has standalone value apart from 
the undelivered elements to the collaboration partner based on the consideration of the relevant facts and 
circumstances of each arrangement, including the research and development capabilities of the 
collaboration partner and other market participants. We recognize arrangement consideration allocated to 
licenses upon delivery of the license if facts and circumstances indicate that the license has standalone 
value apart from the undelivered elements, which generally include research and development services. If 
facts and circumstances indicate that the delivered license does not have standalone value from the 
undelivered elements, we recognize the revenue as a combined unit of accounting. 

We have determined that some of our exclusive licenses lack standalone value apart from the related 
research and development services. In those circumstances we recognize collaboration revenue from non-
refundable upfront and license fees in the same manner as the undelivered item(s), which is generally the 
period over which we provide the research and development services. For circumstances in which upfront 
and license fees are contingently refundable, we defer the recognition of the upfront and license fees until 
such time that the consideration is considered to be fixed or determinable.

• Research and Development Services. The deliverables under our collaboration and license agreements 
generally include deliverables related to research and development services we perform on behalf of the 
collaboration partner. As the provision of research and development services is a part of our central 
operations and we are principally responsible for the performance of these services under the agreements, 
we recognize revenue on a gross basis for research and development services as we perform those 
services. Additionally, we recognize research funding related to collaborative research and development 
efforts as revenue as we perform or deliver the related services in accordance with contract terms as long 
as we will receive payment for such services upon standard payment terms. 

Milestone Revenue. Our collaboration and license agreements generally include contingent payments and milestone 
payments related to specified research, development and regulatory milestones and sales-based milestones. 
Research, development and regulatory contingent payments and milestone payments are typically receivable under 
our collaborations when our collaborator claims or selects a target or initiates or advances a covered product 
candidate in preclinical or clinical development, upon submission for marketing approval of a covered product with 
regulatory authorities, upon receipt of actual marketing approvals of a covered product or for additional indications, 
or upon the first commercial sale of a covered product. Sales-based milestones are typically receivable when annual 
sales of a covered product reach specified levels. 

At the inception of each arrangement that includes milestone payments, we evaluate whether each milestone is 
substantive and at risk to both parties on the basis of the contingent nature of the milestone. We evaluate factors 
such as the scientific, regulatory, commercial and other risks that we must overcome to achieve the respective 
milestone, the level of effort and investment required to achieve the respective milestone and whether the milestone 
consideration is reasonable relative to all deliverables and payment terms in the arrangement in making this 
assessment. 

F-11

We have adopted the Accounting Standards Codification, or ASC 605-28, Revenue Recognition—Milestone Method, 
such that we recognize any payment that is contingent upon the achievement of a substantive milestone entirely in 
the period in which the milestone is achieved. A milestone is defined as an event that can only be achieved based in 
whole or in part on either our performance or the occurrence of a specific outcome resulting from our performance 
for which there is substantive uncertainty at the date the arrangement is entered into that the event will be achieved. 
Therefore, a milestone does not include events for which occurrence is contingent solely on the performance of a 
collaborative partner. To be substantive, a milestone must meet all the following criteria: the consideration 
receivable upon the achievement of the milestone is commensurate with either our performance after the agreement 
to achieve the milestone or the enhancement of value of delivered items as a result of a specific outcome resulting 
from our performance after the agreement to achieve the milestone, the consideration relates solely to past 
performance, and the consideration is reasonable relative to all of the deliverables and payment terms in the 
arrangement. 

Research and Development Expenses 

Research and development expenses consist of costs we incur for our own and for sponsored and collaborative 
research and development activities. Expenses we incur related to collaborative research and development 
agreements approximate the revenue recognized under these agreements. Research and development costs are 
expensed as incurred. Research and development costs consist of salaries and benefits, including associated stock-
based compensation, laboratory supplies and facility costs, as well as fees paid to other entities that conduct certain 
research and development activities on our behalf. We estimate preclinical study and clinical trial expenses based on 
the services performed pursuant to contracts with research institutions and contract research organizations, or CROs, 
and clinical manufacturing organizations, or CMOs, that conduct and manage preclinical studies and clinical trials 
on our behalf based on actual time and expenses incurred by them. Further, we accrue expenses related to clinical 
trials based on the level of patient activity according to the related agreement. We monitor patient enrollment levels 
and related activity to the extent reasonably possible and adjust estimates accordingly. If we do not identify costs 
that we have begun to incur or if we underestimate or overestimate the level of services performed or the costs of 
these services, our actual expenses could differ from our estimates. To date, we have not experienced significant 
changes in our estimates of preclinical studies and clinical trial accruals. 

We expense payments for the acquisition and development of technology as research and development costs if, at 
the time of payment, the technology: is under development; is not approved by the U.S. Food and Drug 
Administration or other regulatory agencies for marketing; has not reached technical feasibility; or otherwise has no 
foreseeable alternative future use. 

Stock-Based Compensation 

We recognize compensation expense using a fair-value-based method for costs related to all share-based payments, 
including restricted stock and stock options. For restricted stock awards, or RSAs, stock-based compensation cost 
related to employees and directors is based on the closing market value of our common stock at the date of grant and 
is recognized as expense ratably over the requisite service period. For stock option awards, stock-based 
compensation cost related to employees and directors is measured at the grant date, based on the fair-value-based 
measurement of the award estimated using the Black-Scholes option-pricing model, and is recognized as expense 
over the requisite service period on a straight-line basis. We account for forfeitures as they occur by reversing any 
expense recognized for unvested awards. 

Restricted stock awards granted to individual service providers who are not employees or directors are accounted for 
at fair value by remeasuring the cost based on the closing stock price at the end of that reporting period. Options 
granted to individual service providers who are not employees or directors are accounted for at estimated fair value 
using the Black-Scholes option-pricing model and are subject to periodic remeasurement over the period during 
which the services are rendered.

F-12

Income Taxes 

We account for income taxes using the liability method, under which deferred tax assets and liabilities are 
determined based on differences between financial reporting and tax basis of assets and liabilities and are measured 
using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. Valuation 
allowances are provided when the expected realization of the deferred tax assets does not meet the more-likely-than-
not criteria. As a result, deferred tax assets at the end of 2016 and 2017 are subject to a full valuation allowance. We 
are required to determine whether it is more likely than not that a tax position will be sustained upon examination by 
the appropriate taxing authorities before any part of the benefit can be recorded in the financial statements. It is our 
practice to recognize interest and penalties related to unrecognized tax benefits, if any, as a component of income 
tax expense. 

Accounting Pronouncements Adopted in 2017

In March 2016, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update, or 
ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, to simplify certain aspects of the 
accounting for share-based payment transactions to employees. The new standard requires excess tax benefits and 
tax deficiencies to be recorded as a component of the provision for income taxes in a company’s statements of 
income when stock awards vest or are settled. In addition, it eliminates the requirement to reclassify cash flows 
related to excess tax benefits from operating activities to financing activities on the consolidated statements of cash 
flows. The standard also provides an accounting policy election to account for forfeitures as they occur, allows a 
company to withhold more of an employee’s vesting shares for tax withholding purposes without triggering liability 
accounting, and clarifies that all cash payments made to tax authorities on an employee’s behalf for withheld shares 
should be presented as a financing activity on a company’s cash flows statement. We adopted ASU 2016-09 as of 
January 1, 2017. Starting in the first quarter of 2017, we reflected excess tax benefits or deficiencies from share-
based award activity in the consolidated statements of operations as a component of the provision for income taxes, 
whereas we previously recognized them in equity. We have not adjusted prior periods. In addition, we adopted the 
aspects of the standard affecting the cash flow presentation prospectively. We will include the cash flow related to 
excess tax benefits within the operating activities. The presentation requirements for cash flows related to employee 
taxes paid for withheld shares has no impact on our consolidated statements of cash flows since such cash flows 
have historically been presented as a financing activity. Finally, we elected to account for forfeitures as they occur, 
rather than estimate expected forfeitures, on a modified retrospective basis. Our adoption of ASU 2016-09 resulted 
in a $337,000 decrease to retained earnings as of January 1, 2017 to record the additional stock compensation 
expense due to the elimination of the estimated forfeiture rate and a $3.1 million increase to deferred tax assets 
which is fully offset by a valuation allowance because we determined that it is more likely than not that the deferred 
tax asset will not be fully realized. 

Accounting Pronouncements Not Yet Adopted

In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers: Topic 606, that supersedes 
nearly all existing revenue recognition guidance under GAAP. The FASB subsequently issued amendments to ASU 
2014-09 that have the same effective date and transition date. The core principle of ASU 2014-09 is to recognize 
revenues when promised goods or services are transferred to customers in an amount that reflects the consideration 
that is expected to be received for those goods or services. ASU 2014-09 defines a five-step process to achieve this 
core principle and, in doing so, it is possible more judgment and estimates may be required within the revenue 
recognition process than are required under existing GAAP, including identifying performance obligations in a 
contract, estimating the amount of variable consideration to include in the transaction price and allocating the 
transaction price to each separate performance obligation. 

F-13

ASU 2014-09 differs from the current accounting standard in many respects, such as in the accounting for variable 
consideration, including milestone payments. Under our current accounting policy, we recognize milestone revenue 
using the milestone method specified in ASC 605-28, which generally results in the recognition of the milestone 
payment as revenue in the period that the milestone is achieved. However, under the new accounting standard, it is 
possible to start to recognize milestone revenue before the milestone is achieved, subject to management’s 
assessment of whether it is probable that a significant reversal in the amount of cumulative revenue recognized will 
not occur when the uncertainty associated with the variable consideration is subsequently resolved. In addition, the 
current accounting standards include a presumption that revenue from up-front non-refundable fees would be 
recognized ratably over the performance period, unless another attribution method was determined to more closely 
approximate the delivery of the goods or services to the customer. The new accounting standard does not have a 
presumption that entities would default to a ratable attribution approach and will require entities to determine an 
appropriate attribution method using either output or input methods. As such, the amount and timing of revenue 
recognition for our license and collaboration agreements will change under the new revenue standard. 

We will adopt ASU 2014-09 on January 1, 2018 using the modified retrospective method. We finalized our analysis 
and currently expect retained earnings to increase by approximately $1.4 million, which is offset by a $1.4 million 
decrease in deferred revenue, due to the difference between the input method and ratable attribution approach. We 
also expect related deferred tax assets to decrease by approximately $0.3 million, which is fully offset by a valuation 
allowance because we determined that it is more likely than not that the deferred tax asset will not be fully realized. 

In February 2016, FASB issued ASU 2016-02, Leases, which amends existing guidance to require substantially all 
leases to be recognized by lessees on their balance sheet as a right-of-use asset and corresponding lease liability, 
including leases currently accounted for as operating leases. ASU 2016-02 will become effective for our interim and 
annual reporting periods during the year ending December 31, 2019 and will apply to all annual and interim 
reporting periods thereafter. Early adoption is permitted. Under the new standard, we expect to record a right-to-use 
lease asset and a lease liability on our balance sheet. Under the new standard, we expect to recognize expense on our 
statement of operations in a manner similar to the current accounting standard.

In May 2017, FASB issued ASU 2017-09, Compensation-Stock Compensation (Topic 718) – Scope of Modification 
Accounting, which amends the scope of modification accounting for share-based payment arrangements. 
Specifically, an entity would not apply modification accounting if the fair value, vesting conditions, and 
classification of the awards are the same immediately before and after the modification. We will adopt the standard 
effective January 1, 2018. We do not expect the adoption to have a material impact on our consolidated financial 
statements.

In November 2016, FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230) 
–  Restricted Cash. ASU 2016-18 requires that a statement of cash flows explain the change during the period in the 
total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. 
Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with 
cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the 
statement of cash flows. ASU 2016-18 will be effective for us beginning January 1, 2018 and will be applied using a 
retrospective transition method to each period presented. We do not expect the adoption of ASU 2016-18 to have a 
material impact on our consolidated financial statements.

F-14

3. Cash Equivalents and Marketable Securities 

The following is a summary of our cash equivalents and marketable securities at December 31, 2017 and 2016 (in 
thousands): 

December 31, 2017
  Amortized     Unrealized    Unrealized     Estimated  
    Fair Value  
  Cost Basis     Gains
31,802 
31,802   $
Money market funds ..................................................   $
(476)    232,900 
U.S. Treasury securities .............................................     233,376    
(476)    264,702 
Total cash equivalents and marketable securities ......     265,178    
Less: cash equivalents................................................    
(31,802)
(31,802)   
(476)  $ 232,900  
Total marketable securities ........................................   $ 233,376   $

—   $
—    
—    
—    
—   $

   Losses

— 

— 

 $

December 31, 2016
  Amortized     Unrealized    Unrealized     Estimated  
    Fair Value  
  Cost Basis     Gains
—   $
Money market funds .................................................  $
432 
432   $
(93)    414,095 
U.S. Treasury securities ............................................    414,134    
(93)    414,527 
Total cash equivalents and marketable securities .....    414,566    
(432)
—    
(432)   
Less: cash equivalents ...............................................   
(93)  $ 414,095  
Total marketable securities .......................................  $ 414,134   $

—   $
54    
54    
—    
54   $

   Losses

As of December 31, 2017, the amortized cost and estimated fair value of our available-for-sale securities by 
contractual maturity are shown below (in thousands): 

  Amortized   
Cost

   Estimated  
Fair
Value

Debt securities maturing:

In one year or less....................................................   $ 221,877   $ 221,445 
11,455 
In one to two years...................................................    
Total marketable securities ...........................................   $ 233,376   $ 232,900  

11,499    

Our cash equivalents and marketable securities have an average maturity of approximately six months and the 
longest maturity is 14 months. We determined that the gross unrealized losses of $476,000 on our marketable 
securities as of December 31, 2017 were temporary in nature and related primarily to interest rate shifts rather than 
significant changes in the underlying credit quality of the securities that we hold. We currently do not intend to sell 
these securities prior to maturity and do not consider these investments to be other-than-temporarily impaired at 
December 31, 2017. There were no sales of available-for-sale securities in any of the periods presented. 

F-15

 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
     
 
 
 
 
  
 
     
      
 
4. Property and Equipment 

Property and equipment consist of the following (in thousands): 

Computer equipment and software ...............................  $
Furniture and fixtures....................................................   
Laboratory equipment ...................................................   
Leasehold improvements ..............................................   
  $
Less: accumulated depreciation and amortization ........   
Property and equipment, net .........................................  $

December 31,

2017

2016

1,892   $
947    
17,429    
22,175    
42,443   $
(11,681)   
30,762   $

1,467 
804 
14,853 
2,468 
19,592 
(13,385)
6,207  

We entered into a lease agreement with respect to our new corporate office and laboratory facility in December 
2016. During fiscal 2017, we acquired $22.2 million of leasehold improvements in connection with our move to the 
new office. We received lease incentives totaling $14.3 million from our landlord for a portion of the costs of these 
leasehold improvements.

5. Other Accrued Liabilities

Other accrued liabilities consist of the following (in thousands):

Clinical development ..........................................................................................  $
Manufacturing .....................................................................................................   
Trade payable ......................................................................................................   
Unpaid leasehold improvements .........................................................................   
Other....................................................................................................................   
Total accrued liabilities .......................................................................................  $

December 31,

2017

2016

12,580 
2,835 
3,995 
7,742 
367 
27,519 

 $

 $

6,831 
4,463 
3,729 
— 
412 
15,435  

6. Stockholders’ Equity

We have 110,000,000 shares of authorized capital stock issuable in series, all with a par value of $0.001 per share, 
of which 100,000,000 shares are designated as common stock and 10,000,000 shares are designated as preferred 
stock. Our Board is authorized to determine the designation, powers, preferences and rights of any such series. As of 
December 31, 2017 and 2016, we had 28,178,639 and 27,509,077 shares of common stock outstanding, respectively. 
There were no shares of preferred stock outstanding as of December 31, 2017 and 2016.

Equity Incentive Plans 

Our Board of Directors, or Board, and stockholders previously approved the 2002 Equity Incentive Plan, or the 2002 
Plan, and the 2010 Equity Incentive Plan, or the 2010 Plan, and collectively with the 2002 Plan, the Prior Plans. The 
2002 Plan terminated in March 2012. In September 2013, our stockholders approved the 2013 Omnibus Incentive 
Plan, or the 2013 Plan. As of September 23, 2013, the effective date of the 2013 Plan, we suspended the 2010 Plan 
and no additional awards may be granted under the 2010 Plan. Any shares of common stock covered by awards 
granted under the Prior Plans that terminate after September 23, 2013 by expiration, forfeiture, cancellation or other 
means without the issuance of such shares were added to the 2013 Plan reserve. 

F-16

 
 
 
 
 
 
   
 
 
 
 
 
 
 
   
 
  
  
  
  
The initial number of shares of common stock available for issuance under the 2013 Plan was 3,500,000, which 
includes the 1,069,985 shares of common stock that were available for issuance under the Prior Plans as of the 
effective date of the 2013 Plan. Unless our Board provides otherwise, beginning on January 1, 2014 and continuing 
until the expiration of the 2013 Plan, the total number of shares of common stock available for issuance under the 
2013 Plan will automatically increase annually on January 1 by 4% of the total number of issued and outstanding 
shares of common stock as of December 31 of the immediately preceding year. Under the plan, any shares that are 
forfeited or expired are added back to the shares available for issuance. As of December 31, 2017, 1,364,975 shares 
of common stock were available for future issuance of options, restricted stock and other stock-based awards under 
the 2013 Plan. 

Incentive stock options may be granted with an exercise price of not less than estimated fair value. Stock options 
granted to a stockholder owning more than 10% of our voting stock must have an exercise price of not less than 
110% of the estimated fair value of the common stock on the date of grant. For all stock options granted prior to our 
initial public offering, our Board determined the estimated fair value of our common stock. For all stock options 
granted after the completion of our initial public offering in September 2013, the fair value for our underlying 
common stock is determined using the closing market price on the date of grant. Stock options are granted with 
terms of up to ten years and generally vest over a period of four years.

The following table summarizes option activity under our stock plans and related information: 

Options Outstanding

  Weighted-
Average
Exercise
Price
Per Share

  Weighted-
Average

    Remaining     Aggregate
Intrinsic
    Contractual    
Value
Terms
(in thousands)  
(in years)

Number
of Shares

Balance at January 1, 2017 .......................................    
Options granted ...................................................    
Options exercised ................................................    
Options forfeited .................................................    
Options expired ...................................................    
Balance at December 31, 2017 .................................    
Options exercisable at December 31, 2017 ..............    

3,454,339 
977,050 
(222,261)
(320,965)
(20,518)
3,867,645 
2,022,807 

 $
 $
 $
 $
 $
 $
 $

26.80 
41.49 
12.28 
37.77 
43.16 
30.35 
22.94 

7.12 
5.68 

 $
 $

14,234 
12,954  

The weighted-average grant-date fair value per share of stock options granted during the years ended December 31, 
2017, 2016 and 2015 was $25.78, $27.95 and $14.18 per share, respectively. The total intrinsic value of options 
exercised during the years ended December 31, 2017, 2016 and 2015 was $5.4 million, $30.8 million and $10.0 
million, respectively. 

We recorded stock-based compensation expense related to options granted to employees and directors of 
approximately $19.3 million, $11.1 million and $4.5 million for the years ended December 31, 2017, 2016 and 
2015, respectively. Stock-based compensation expense related to options granted to individual service providers 
who are not employees or directors was approximately $433,000, $309,000 and $266,000 for the years ended 
December 31, 2017, 2016 and 2015, respectively. As of December 31, 2017, there was $42.3 million of total 
unrecognized compensation expense related to unvested employee and director stock options that we expect to 
recognize over a weighted-average period of 2.6 years. 

RSAs are share awards that entitle the holder to receive freely tradable shares of our common stock upon vesting 
and are unforfeitable once fully vested. The fair value of RSAs was based upon the closing sales price of our 
common stock on the grant date. 

F-17

 
 
 
 
 
   
 
 
 
 
   
 
 
 
     
   
   
     
 
 
 
     
   
 
 
 
   
 
 
 
   
   
   
 
 
 
 
 
   
 
 
   
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
The following table summarizes the RSAs activity under our stock plans and related information:

RSAs Outstanding

Weighted-
Average

 $
Unvested balance at January 1, 2017 ............................    1,040,929 
 $
RSAs granted ...........................................................    617,355 
RSAs vested .............................................................    (719,636)  $
RSAs forfeited..........................................................    (135,231)  $
 $

Unvested balance at December 31, 2017 ......................    803,417 

  Number     Grant-Date  
  of Shares     Fair Value  
28.84 
40.54 
23.52 
42.81 
40.24  

The total fair value on the date of vesting of RSAs vested in 2017, 2016 and 2015 was $30.8 million, $33.2 million, 
and $42,000, respectively. 

We recorded stock-based compensation expense related to RSAs granted to employees and directors of 
approximately $13.7 million, $20.2 million and $6.2 million for the years ended December 31, 2017, 2016 and 
2015, respectively. Stock-based compensation expense related to RSAs granted to individual service providers who 
are not employees or directors was approximately $258,000, $673,000 and $85,000 for the years ended 
December 31, 2017, 2016 and 2015, respectively. As of December 31, 2017, there was $23.0 million of 
unrecognized compensation cost related to unvested employee and director RSAs, that we expect to recognize over a 
weighted-average period of 1.9 years.

Employee Stock Purchase Plan 

In September 2013, our stockholders approved the 2013 Employee Stock Purchase Plan, or the ESPP, which became 
effective as of September 23, 2013. We initially reserved a total of 250,000 shares of common stock for issuance 
under the ESPP. Unless our Board provides otherwise, beginning on January 1, 2014 and continuing until the 
expiration of the ESPP, the total number of shares of common stock available for issuance under the ESPP will 
automatically increase annually on January 1 by the lesser of (i) 1% of the total number of issued and outstanding 
shares of common stock as of December 31 of the immediately preceding year, or (ii) 300,000 shares of common 
stock. As of December 31, 2017, 949,792 shares of common stock were available for issuance under the ESPP. 

Under our ESPP, employees can purchase shares of our common stock based on a percentage of their compensation 
subject to certain limits. The purchase price per share is equal to the lower of 85% of the fair market value of our 
common stock on the offering date or the purchase date with a six-month look-back feature. ESPP purchases are 
settled with common stock from the ESPP’s previously authorized and available pool of shares. We issued a total of 
50,659 shares under the ESPP in 2017. 

The compensation expense related to the ESPP was $506,000, $602,000 and $455,000 for the years ended 
December 31, 2017, 2016 and 2015, respectively. As of December 31, 2017, there was $355,000 of unrecognized 
compensation cost related to the ESPP, which we expect to recognize over 4.5 months. 

Stock-Based Compensation

 Total stock-based compensation expense recognized was as follows: 

(in thousands)
Research and development ..........................................   $
General and administrative..........................................    
Total.............................................................................   $

F-18

Year Ended December 31,
2016
17,960   $
14,925    
32,885   $

2017
18,285   $
15,888    
34,173   $

2015

6,362 
5,105 
11,467  

 
 
 
 
   
 
   
 
 
 
 
 
 
 
  
   
 
We estimated the fair value of each award using the Black-Scholes option-pricing model based on the date of grant 
of such award with the following assumptions: 

Options
Year Ended December 31,
2016

2015

2017

ESPP
Year Ended December 31,
2016
0.5

2015
0.5

2017
0.5

Expected term (years) ..............  
Expected volatility ...................  
75-96%  
Risk-free interest rate...............   1.9-2.2%     1.3-1.8%     1.4-1.9%     1.0-1.4%     0.4-0.6%     0.1-0.3%  
0.0%  
Expected dividend yield...........    

5.5-6.1    
71-76%    

5.5-6.3    
69-74%    

5.5-6.3    
66-70%    

47-57%    

42-94%    

0.0%      

0.0%      

0.0%      

0.0%      

0.0%      

The expected term of options granted represents the period of time that we expect options granted to remain 
outstanding, which we determined using the simplified method as we have insufficient historical information to 
provide a basis for estimate. The expected term of the ESPP rights is equal to the six-month look-back period. 
Volatility for options granted in 2015 is based on the average of the historical volatility of our stock price and a peer 
group of public companies. We selected the peer group on the basis of operational and economic similarity with our 
principal business operations. Volatility for options granted subsequent to 2015 is based on the historical volatility 
of our stock price since we became publicly traded. Volatility for ESPP rights is equal to our historical volatility 
over the six-month look-back period. The risk-free interest rate for the expected term of the options is based on the 
U.S. Treasury yield curve with a maturity equal to the expected term in effect at the time of grant. We have not paid, 
and do not anticipate paying, cash dividends on our shares of common stock; therefore, the expected dividend yield 
is zero. 

7. Earnings per Share

The computation of basic income (loss) per share is based on the weighted-average number of our common shares 
outstanding. The computation of diluted income (loss) per share is based on the weighted-average number of our 
common shares outstanding and dilutive potential common shares, which include shares that may be issued under 
our equity incentive plans, determined using the treasury stock method.

The following table sets forth the computation of basic and diluted net income (loss) (in thousands, except per share 
data):

Year Ended December 31,
2016

2015

2017

Numerator:
Net income (loss) ........................................................  $ (150,222)  $ (65,697)  $ 249,647 

Denominator:
Denominator for basic income (loss)
   per share - weighted-average shares ........................   
Effect of dilutive securities:

Equity incentive plans ...........................................   
Denominator for diluted income (loss) per share........   

27,945    

26,955    

25,661 

—    
27,945    

—    
26,955    

1,374 
27,035 

Income (loss) per share - Basic ...................................  $

(5.38)  $

(2.44)  $

Income (loss) per share - Diluted ................................  $

(5.38)  $

(2.44)  $

9.73 

9.23  

F-19

 
 
   
 
 
 
   
 
 
 
   
   
   
   
   
 
   
   
 
 
 
 
 
 
   
   
 
 
 
 
 
   
     
     
  
   
     
     
  
   
     
     
  
 
   
     
     
  
We did not include potentially dilutive securities that would have an antidilutive effect. In 2017 and 2016, this 
consisted of all options to purchase common stock and RSAs. In 2015, this consisted of certain options to purchase 
common stock and RSAs. 

We excluded the following securities from the calculation of diluted net income (loss) per share as the effect would 
have been antidilutive (in thousands):

Year Ended December 31,
2016

2015

2017

Options to purchase common stock .............................   
RSAs ............................................................................   
Total .............................................................................   

3,843 
886 
4,729 

2,981 
1,278 
4,259 

187 
8 
195  

8. Collaborative Research and Development Agreements 

Bristol-Myers Squibb Company 

License and Collaboration Agreement

On October 14, 2015, we entered into a license and collaboration agreement, or the cabiralizumab collaboration 
agreement, with Bristol-Myers Squibb Company, or BMS, pursuant to which we granted BMS exclusive global 
rights to develop and commercialize certain colony stimulating factor-1 receptor, or CSF1R, antibodies, including 
our monoclonal CSF1R inhibiting antibody that we refer to as cabiralizumab, and all modifications, derivatives, 
fragments, or variants of such antibodies, each of which we refer to as a licensed antibody. Under the terms of the 
cabiralizumab collaboration agreement, BMS is responsible, at its expense, for developing products containing 
licensed antibodies, each of which we refer to as a licensed product, under a development plan, subject to our option, 
at our own expense, to conduct certain studies, including registration-enabling studies to support approval of 
cabiralizumab in PVNS and in combination with our proprietary internal or in-licensed compounds, including in 
oncology. BMS is responsible for manufacturing and commercializing each licensed product and we will retain 
rights to a U.S. co-promotion option. This supersedes the clinical trial collaboration agreement we entered into with 
BMS in November 2014, or the original collaboration agreement.

We continue to conduct our Phase 1a/1b clinical trial to evaluate the safety, tolerability and preliminary efficacy of 
combining Opdivo® (nivolumab), BMS’s programmed-death 1 (PD-1) immune checkpoint inhibitor, with 
cabiralizumab in multiple tumor types, which we commenced under the original collaboration agreement. BMS 
bears all costs and expenses relating to this trial, including manufacturing costs for the supply of cabiralizumab, 
except that we are responsible for our own internal costs, including internal personnel costs. We received $17.9 
million and $8.0 million of research funding in 2017 and 2016, respectively, related to the research we performed 
under the cabiralizumab collaboration agreement. 

Pursuant to the cabiralizumab collaboration agreement, BMS made an upfront payment of $350.0 million to us in 
December 2015. We applied ASC 605-25, Multiple-Deliverable Revenue Arrangements, in evaluating the 
appropriate accounting for the cabiralizumab collaboration agreement. We identified the license to BMS and the 
associated transfer of manufacturing and other know-how as substantive deliverables under this agreement. Since all 
of the deliverables were fully delivered by December 31, 2015, we recognized the $350.0 million upfront license fee 
associated with the deliverables entirely as revenue in 2015.

F-20

 
 
 
 
 
 
   
   
 
  
  
  
  
  
  
Additionally, we are eligible to receive up to $1.05 billion in development and regulatory milestone payments per 
anti-CSF1R product for oncology indications and up to $340 million in development and regulatory milestone 
payments per anti-CSF1R product for non-oncology indications, as well as royalties ranging from the high teens to 
the low twenties, such royalties to be enhanced in the U.S. in the event that we exercise our co-promotion option. 
We determined that these contingent payments will not be accounted for under the milestone method of revenue 
recognition as the events that trigger these payments under the agreement with BMS do not meet the definition of a 
milestone under ASC 605-28, Milestone Method of Revenue Recognition, because the achievement of these 
milestones is solely dependent on BMS’s performance. Revenue from these contingent payments will be recognized 
if and when such payments become due, subject to satisfaction of all the criteria necessary to recognize revenue at 
that time, because we do not have any outstanding performance obligations under this arrangement. For the year 
ended December 31, 2017, we did not recognize any revenue for development and regulatory milestone payments.

Under the original collaboration agreement, BMS paid us an upfront fee of $30.0 million in December 2014. 
Initially, the $30.0 million upfront fee was contingently refundable if certain change of control events occurred prior 
to a specified date. As such, the upfront fee was not considered to be fixed or determinable at that time and was 
recorded as deferred revenue as of December 31, 2014. Pursuant to the cabiralizumab collaboration agreement, the 
$30.0 million upfront fee under the original collaboration is no longer contingently refundable. Therefore, upon the 
effectiveness of the cabiralizumab collaboration agreement, the upfront fee became fixed or determinable and we 
started recognizing revenue ratably, using a cumulative catch-up method, over the estimated performance period 
ending in 2019. During 2017, 2016 and 2015, we recognized $5.9 million, $5.9 million, and $6.4 million, 
respectively, of revenue relating to the upfront fee. 

For the years ended December 31, 2017, 2016 and 2015, we recognized $23.7 million, $14.4 million, and $359.9 
million, respectively, of revenue under the cabiralizumab collaboration agreement. As of December 31, 2017 and 
2016, we had deferred revenue relating to the collaboration of $11.8 million and $17.7 million, respectively. 

Immuno-Oncology Research Collaboration 

In March 2014, we entered into a research collaboration and license agreement, or the immuno-oncology research 
collaboration, with BMS, to carry out a research program to (i) discover novel interacting proteins in two 
undisclosed immune checkpoint pathways, which we refer to as the checkpoint pathways, using our target discovery 
platform; (ii) further the understanding of target biology with respect to targets in these checkpoint pathways; and 
(iii) discover and pre-clinically develop compounds suitable for development for human therapeutic uses against 
targets in these checkpoint pathways. Under the immuno-oncology collaboration, we granted BMS an exclusive, 
worldwide license to research, develop and commercialize products directed towards certain targets in the 
checkpoint pathways. BMS has an option to take exclusive licenses to additional targets we may identify in these 
checkpoint pathways pursuant to the research plan under the immuno-oncology research collaboration. Based on 
data arising from our activities under the research plan, in January 2016, we amended the immuno-oncology 
research collaboration to add an additional checkpoint pathway to the research program, for a total of three immune 
checkpoint pathways.

We received an upfront payment of $20.0 million from BMS in April 2014 in connection with our entry into the 
immuno-oncology research collaboration. BMS was obligated to pay us $9.5 million in research funding over the 
course of the three-year research term based on the research activities currently planned under the research plan. 
BMS had the option to extend the research term for two additional one-year periods on a year-by-year basis, during 
which extensions we would be obligated to perform additional services as agreed to with BMS and BMS would be 
obligated to pay us research funding with respect to such services. The initial research term under the immuno-
oncology research collaboration expired in March 2017. In each of December 2016 and December 2017, 
BMS exercised its option to extend the research term for an additional year to March 2018 and March 2019, 
respectively.  

F-21

We applied ASC 605-25, Multiple-Deliverable Revenue Arrangements, in evaluating the appropriate accounting for 
the immuno-oncology collaboration. In accordance with this guidance, we concluded that we should account for the 
immuno-oncology research collaboration as a single unit of accounting because the intellectual property delivered to 
BMS was not considered to have stand-alone value and recognize the immuno-oncology research collaboration 
consideration in the same manner as the final deliverable, which is research service. We recorded the $20.0 million 
upfront payment as deferred revenue and are recognizing it over the five-year research period under the immuno-
oncology research collaboration. In addition, BMS agreed to pay us $9.5 million of research funding over the initial 
three-year research program term and an additional $2.1 million for each extension. We received $2.6 million, $1.6 
million and $4.1 million of research funding in 2017, 2016 and 2015, respectively, related to research we performed 
under the immuno-oncology research collaboration.

We are eligible to receive certain contingent payments with respect to each target subject to the immuno-oncology 
research collaboration and royalties on sales of products related to such targets, if any. In December 2017, we 
recognized $5.0 million related to a developmental contingent payment.

In accordance with ASC 605-28, we determined that the remaining contingent payments under the immuno-
oncology research collaboration do not constitute milestone payments and will not be accounted for under the 
milestone method of revenue recognition. The events leading to these payments under the collaboration do not meet 
the definition of a milestone under ASC 605-28 because the achievement of these events solely depends on BMS’s 
performance. Any revenue from these contingent payments would be subject to an allocation of arrangement 
consideration and would be recognized over any remaining period of performance obligations, if any, relating to the 
collaboration. If we have no remaining performance obligations under the immuno-oncology research collaboration 
at the time the contingent payment is triggered, we would recognize the contingent payment as revenue in full upon 
the triggering event. 

In connection with the immuno-oncology research collaboration, BMS purchased 994,352 shares of our common 
stock at a price per share of $21.16, for an aggregate purchase price of $21.0 million. We determined that the 
purchase price of $21.16 per share exceeded the fair value of our common stock by $2.4 million and, therefore, 
recorded the $2.4 million as deferred revenue that we are recognizing in the same manner as the $20.0 million 
upfront payment. 

For the years ended December 31, 2017, 2016, and 2015, we recognized $12.0 million, $7.7 million and $7.0 
million, respectively, of revenue under the immuno-oncology research collaboration. As of December 31, 2017 and 
2016, we had deferred revenue relating to the immuno-oncology research collaboration of $6.3 million and $10.6 
million, respectively. 

The immuno-oncology research collaboration will terminate upon the expiration of all payment obligations under 
the collaboration. In addition, BMS may terminate the immuno-oncology research collaboration in its entirety or on 
a collaboration target-by-collaboration target basis at any time with advance written notice and either party may 
terminate the collaboration in its entirety or on a collaboration target-by-collaboration target basis with written 
notice for the other party’s material breach if such other party fails to timely cure the breach or immediately upon 
certain insolvency events. 

F-22

Zai Lab China License and Collaboration Agreement

In December 2017, we entered into a license and collaboration agreement with Zai Lab, or the China collaboration 
agreement, pursuant to which we granted Zai Lab an exclusive license to develop and commercialize 
bemarituzumab, and all fragments, conjugates, derivatives and modifications thereof, or the licensed antibody, in 
China, Hong Kong, Macau, and Taiwan, each a region, and collectively, the territory.

Under the terms of the China collaboration agreement, Zai Lab will be responsible, at its expense, for (i) developing 
and commercializing products containing the licensed antibody, each, a licensed product, under a territory 
development plan and (ii) performing certain development activities to support our global development and 
registration of licensed products, including the Phase 3 portion of our Phase 1/3 global registrational trial to test 
bemarituzumab in combination with 5-fluorouracil (5-FU), leucovorin, and oxaliplatin, or mFOLFOX6, as front-line 
treatment of patients with gastric or gastroesophageal junction, or GEJ, cancer that overexpresses FGFR2b, or the 
FIGHT trial, in the territory, under a global development plan.

Pursuant to the China collaboration agreement, with respect to each licensed product, we are eligible to receive up to 
$39.0 million of specified development and regulatory milestone payments. Zai Lab will also be obligated to pay us 
a royalty, on a licensed product-by-licensed product and region-by-region basis, in the high teens or low twenties, 
depending on the number of patients Zai Lab enrolls in the FIGHT trial, subject to reduction in certain 
circumstances, on net sales of each licensed product in each region until the latest of (i) the 11th anniversary of the 
first commercial sale of such licensed product in such region, (ii) the expiration of certain patents covering such 
licensed product in such region, and (iii) the date on which any applicable regulatory, pediatric, orphan drug or data 
exclusivity with respect to such licensed product expires in such region. We cannot determine the date on which Zai 
Lab’s potential royalty payment obligations to us would expire because Zai Lab has not yet developed any licensed 
products under the China collaboration agreement and we therefore cannot at this time identify the date of the first 
commercial sale or any related patents covering or regulatory exclusivity periods with respect to such licensed 
product.

Under the China collaboration agreement, we recorded a $4.2 million receivable in December 2017 for the non-
refundable and non-creditable upfront fee of $5.0 million (net of expected value-added tax withholdings of $0.8 
million). We applied ASC 605-25, Multiple-Deliverable Revenue Arrangements, in evaluating the appropriate 
accounting for this agreement. In accordance with this guidance, we concluded that the agreement consideration 
shall be recognized over the period that the development services are provided under a global development plan. As 
of December 31, 2017, services under the global development plan had not begun. Accordingly, as of December 31, 
2017, we had deferred revenue relating to the collaboration of $4.2 million, which we expect to recognize beginning 
in 2018 over the estimated performance period. 

GlaxoSmithKline LLC

Respiratory Diseases Collaboration 

In April 2012, we entered into research collaboration and license agreement, or the respiratory diseases 
collaboration, with GlaxoSmithKline LLC, or GSK, to identify new therapeutic approaches to treat refractory 
asthma and chronic obstructive pulmonary disease, or COPD, function with a particular focus on identifying novel 
protein therapeutics and antibody targets. We conducted six customized cell-based screens of our protein library 
under this agreement. Under the terms of the agreement, GSK paid us an upfront technology access payment of 
$7.5 million at the inception of the respiratory diseases collaboration. In addition, GSK agreed to pay us $10.5 
million of research funding over the research program term.  

We applied ASC 605-25, Multiple-Deliverable Revenue Arrangements, in evaluating the appropriate accounting for 
this agreement. In accordance with this guidance, we concluded that the arrangement should be accounted for as a 
single unit of accounting and that the agreement consideration should be recognized in the same manner as the final 
deliverable, which is the research service. We recorded the $7.5 million upfront technology access payment as 
deferred revenue and we recognized such payment over the initial four-year research period under the agreement. 

F-23

Pursuant to the respiratory diseases collaboration, GSK exercised its option to expand the research plan to include 
two additional screening assays. We received $2.0 million in additional research funding for the two additional 
screening assays as of December 31, 2015. 

In January 2016, we amended our respiratory diseases collaboration to extend the research term by three months to 
July 2016 to allow additional validation of the protein targets we discovered and to increase the research funding by 
$0.7 million that GSK is obligated to pay us under our collaboration. Such funding was fully received as of 
December 31, 2016. 

We are eligible to receive certain option and selection payments, payments for the achievement of certain 
development activities, and royalties on the sales of products related to targets GSK selects for exclusive 
development, if any. 

We are eligible to receive up to $124.3 million in potential target evaluation and selection fees and contingent 
payments with respect to each protein target for which GSK will have sole responsibility for the further development 
and commercialization of products that incorporate or target such protein target, or a track 1 target. GSK is also 
obligated to pay us tiered low- to mid-single digit royalties on global net sales for each product that incorporates or 
targets each such track 1 target. We are eligible to receive up to $193.8 million in potential target evaluation and 
selection fees and contingent payments with respect to each protein target for which we will develop biologics that 
incorporate or target the protein targets through to clinical proof of mechanism in either a phase 1 clinical trial or a 
phase 2 clinical trial, or a track 2 target. GSK is also obligated to pay us tiered high-single to low-double digit 
royalties on global net sales for each product that incorporates or targets each such track 2 target.  

In accordance with ASC 605-28, we determined that the remaining contingent payments under the respiratory 
diseases collaboration do not constitute milestone payments and we will not account for such payments under the 
milestone method of revenue recognition. 

In connection with our entry into the respiratory diseases collaboration, GSK purchased 381,693 shares of our 
Series A-3 convertible preferred stock at a price of $26.20 per share, resulting in net cash proceeds to us of 
$10.0 million. We determined that the purchase price of $26.20 per share exceeded the estimated fair value of the 
Series A-3 convertible preferred stock by $3.1 million and, therefore, recorded the $3.1 million as deferred revenue 
to be recognized in the same manner as the upfront technology access payment. In connection with our initial public 
offering in September 2013, all outstanding shares of convertible preferred stock converted into shares of common 
stock. 

In the years ended December 31, 2017, 2016 and 2015, we received $0.5 million, $3.6 million and $3.9 million, 
respectively, of research funding and milestones related to all research being performed under the respiratory 
diseases collaboration. Total revenue recognized under the respiratory diseases collaboration was $0.5 million, $5.0 
million and $7.3 million for the years ended December 31, 2017, 2016 and 2015, respectively. As of December 31, 
2017, we fully recognized the deferred revenue related to the respiratory diseases collaboration as we completed our 
obligation to provide research service. 

The respiratory diseases collaboration will terminate upon the expiration of the royalty terms of any products that 
incorporate or target a protein exclusively licensed under the collaboration. In addition, GSK may terminate this 
agreement at any time with advance written notice, and either party may terminate this agreement with written 
notice for the other party’s material breach if such party fails to cure the breach or immediately in the case of failure 
to comply with certain anti-bribery and anti-corruption policies or upon certain insolvency events. 

FP-1039 License and Collaboration

In March 2011, we entered into a license and collaboration agreement, or the FP-1039 license, with Human Genome 
Sciences, Inc., or HGS, which was acquired by GSK in 2012. Pursuant to the FP-1039 license, we granted GSK an 
exclusive license to develop and commercialize our FP-1039 product and other FGFR1 fusion proteins in the United 
States, the European Union and Canada. 

F-24

In March 2016, GSK delivered to us a written notice of termination of the FP-1039 license. Pursuant to the terms of 
the FP-1039 license, termination of the FP-1039 license became effective on September 5, 2016, 180 days after 
GSK’s notice of termination. Prior to GSK’s termination of the FP-1039 license, GSK had initiated a Phase 1b 
clinical trial of FP-1039. In October 2017, GSK completed treatment of patients in this trial. GSK has no future 
payment obligation to us in connection with this collaboration.

We received an upfront license fee of $50.0 million from GSK in March 2011 in connection with our entry into the 
FP-1039 license. We identified the initial license, associated technology transfer and services for the conduct of the 
then-concluding FP-1039 Phase 1 clinical trial as substantive deliverables under the FP-1039 license. As of 
December 31, 2011, all deliverables under the FP-1039 license were fully delivered and we recognized the related 
$50.0 million of upfront license fee fully as revenue.

In addition, GSK was obligated to pay us for the costs of all FP-1039 related research and development activities we 
elected to undertake on behalf of GSK. For the years ended December 31, 2017, 2016 and 2015, we recognized $0, 
$21,000, and $0.1 million, respectively, in revenue from GSK related to development costs associated with FP-1039.

Muscle Diseases Collaboration 

In July 2010, we entered into a research collaboration and license agreement, or the muscle diseases collaboration, 
with Glaxo Group Limited, or GSK, to identify potential drug targets and drug candidates to treat skeletal muscle 
diseases. We conducted three customized cell-based screens and one in vivo screen of our protein libraries under the 
muscle diseases collaboration. The research term under this collaboration ended in May 2014. We fully recognized 
the revenue related to this agreement in 2014 following the completion of our obligation to provide research services 
in May 2014. 

The muscle diseases collaboration will terminate upon the expiration of the royalty terms of any products that 
incorporate or target a protein exclusively licensed under the collaboration. In addition, GSK may terminate this 
agreement at any time with advance written notice, and either party may terminate this agreement with written 
notice for the other party’s material breach if such party fails to cure the breach or upon certain insolvency events. 

UCB Fibrosis and CNS Collaboration

In March 2013, we entered into a research collaboration and license agreement, or the fibrosis and CNS 
collaboration, with UCB Pharma, S.A., or UCB, to identify potential biologics targets and therapeutics in the areas 
of fibrosis-related immunologic diseases and central nervous system disorders. 

We applied ASC 605-25, Multiple-Deliverable Revenue Arrangements, to evaluate the appropriate accounting for 
this agreement. In accordance with this guidance, we concluded that we should account for the arrangement as a 
single unit of accounting and recognize the agreement consideration in the same manner as the final deliverable of 
the research services. 

Under the terms of the fibrosis and CNS collaboration, UCB paid us an upfront payment of $6.0 million in March 
2013. In addition, UCB agreed to pay us $6.6 million for a technology fee and $2.0 million for research funding. All 
of which was recorded as deferred revenue and being amortized over the initial five-year research period under the 
agreement. As of December 31, 2015, we fully collected on the technology fees and research funding under the 
fibrosis and CNS collaboration.  

We are eligible to receive certain evaluation and selection fees and contingent payments with respect to each protein 
target that UCB elects to obtain an exclusive license, and royalties on the sales of products related to such targets, if 
any. 

We are eligible to receive up to $0.4 million of target evaluation and selection fees with respect to each target we 
have offered to UCB in the collaboration. In accordance with ASC 605-28, we concluded that these fees under the 
agreement with UCB are substantive and should be accounted for under the milestone method of revenue 
recognition. During 2017, 2016 and 2015, we received $0.3 million, $0.4 million and $0.1 million in target 
evaluation and selection fees, respectively.

F-25

In accordance with ASC 605-28, we determined that the remaining contingent payments under the agreement do not 
constitute milestone payments and will not be accounted for under the milestone method of revenue recognition. The 
events leading to these payments under the agreement with UCB do not meet the definition of a milestone under 
ASC 605-28 because the achievement of these events solely depends on UCB’s performance.

For the years ended December 31, 2017, 2016 and 2015, we recognized $3.3 million, $3.5 million and $4.0 million 
of revenue, respectively, under the fibrosis and CNS collaboration. As of December 31, 2017 and 2016, we have 
deferred revenue relating to this agreement of $0.6 million and $3.7 million, respectively. Additionally, UCB is 
obligated to reimburse us for certain specialized research and development costs associated with the screens under 
the agreement.  

Our initial research activities under this agreement were completed in March 2016. Upon the completion of those 
research activities, UCB has up to a two-year evaluation period during which we may be obligated to perform 
additional services at the request of UCB.

The agreement will terminate upon the expiration of the royalty terms of any products that incorporate or target a 
protein exclusively licensed under the collaboration. In addition, UCB may terminate this agreement at any time 
with advance written notice, and either party may terminate the agreement with written notice for the other party’s 
material breach if such other party fails to timely cure the breach or upon certain insolvency events. 

bluebird bio, Inc. License Agreement

In May 2015, we entered into an exclusive license agreement, or the bluebird license agreement, with bluebird bio, 
Inc., or bluebird, under which we licensed to bluebird human antibodies to an undisclosed cancer target to research, 
develop and commercialize chimeric antigen receptor, or CAR, T cell therapies using these antibodies.

Under the bluebird license agreement, bluebird paid us a $1.5 million upfront fee in 2015. There are no other 
deliverables under the agreement other than the license grant. We recognized the $1.5 million upfront fee as revenue 
upon delivery of the license grant, which was completed in 2015. 

In January 2017, bluebird delivered to us written notice of termination of the license agreement. Pursuant to the 
terms of the license agreement, the termination became effective on May 17, 2017, which was 120 days after 
bluebird’s notice of termination. Following termination, bluebird had no future payment obligations to us in 
connection with the license agreement. 

9. Acquired Technologies 

Galaxy Biotech, LLC 

In December 2011, we entered into an exclusive license agreement with Galaxy Biotech, LLC, or Galaxy, for the 
development, manufacturing, and commercialization of certain anti-FGFR2b monoclonal antibodies. Under the 
terms of the agreement, we agreed to pay Galaxy an upfront license payment of $3.0 million. We paid the upfront 
payment in two equal installments in January 2012 and July 2012. As we had full access to the technology and 
materials upon execution of the agreement, the lead compound was in an early stage of development, and the 
underlying technology has no alternative future uses, we recorded the entire upfront payment to research and 
development expenses in our statement of operations for the year ended December 31, 2011. We are also required to 
make additional payments based upon the achievement of certain intellectual property, development, regulatory, and 
commercial milestones, as well as royalties on future net sales of products resulting from development of this 
purchased technology, if any. In May 2016, we amended the license agreement to revise certain milestone 
definitions, reduce certain milestone payments and add certain development-related milestone payments that were 
triggered by dosing of certain patients in the current Phase 1 clinical trial of bemarituzumab. We made milestone 
payments to Galaxy totaling $0, $2.5 million and $0 in 2017, 2016 and 2015, respectively. In May 2017, we further 
amended the license agreement to align the net sales definition under the agreement to the net sales definition under 
any sublicense we may grant under the agreement and to amend the termination provisions to allow for a direct 
license between Galaxy and any sublicensee upon termination of the agreement.

F-26

BioWa, Inc. and Lonza Sales AG

In February 2012, we entered into a license agreement with BioWa, Inc. and Lonza Sales AG, or BioWa-Lonza, 
pursuant to which BioWa-Lonza granted us a non-exclusive license to use their Potelligent® CHOK1SV technology, 
including the CHOK1SV cell line, and a non-exclusive license to related know-how and patents. This license is 
necessary to produce our bemarituzumab antibody. 

We are obligated to pay BioWa-Lonza aggregate milestone payments of up to $25.4 million for development, 
regulatory and commercialization milestones achieved in our bemarituzumab antibody program. We are also 
obligated to pay BioWa-Lonza tiered royalties on net sales of bemarituzumab up to mid-single digit percentages of 
the proceeds of such sales. 

Our license agreement with BioWa-Lonza will remain in effect until the expiration of our royalty obligations. For 
each licensed product, we are obligated to pay BioWa-Lonza royalties on net sales of such licensed product on a 
country-by-country basis for the longer of the life of the licensed patents covering such licensed product in such 
country or 10 years after the first commercial sale of such licensed product in a major market country, which 
includes the United States. However, because we believe the last-to-expire patents currently licensed to us under the 
license agreement would expire in less than 10 years, we believe the date on which our royalty payment obligations 
to BioWa-Lonza would expire in any country would be 10 years after the first commercial sale of such product in a 
major market country. 

We may terminate the license agreement for convenience subject to our continuing obligation to pay royalties. 
BioWa-Lonza may terminate the license agreement in the event of our uncured material breach, if we oppose or 
dispute the validity of patents licensed to us under the license agreement or if we are declared insolvent, make an 
assignment for the benefit of creditors, are the subject of bankruptcy proceedings or have a receiver or trustee 
appointed for substantially all of our property. 

INBRX 110 LP

In July 2015, we entered into a research collaboration and license agreement with INBRX 110 LP, or Inhibrx, to 
obtain (a) an exclusive, worldwide license to antibodies to GITR for therapeutic and diagnostic uses, and (b) an 
exclusive option to obtain exclusive, worldwide licenses to multi-specific antibodies developed by Inhibrx that bind 
to both GITR and other targets.

Pursuant to the agreement, we paid Inhibrx an upfront fee of $10.0 million for the license and for services provided 
by Inhibrx related to a research cell bank in July 2015. We recorded an expense of $5.0 million for a milestone 
payment to Inhibrx when the milestone was achieved in May 2017.

We expense payments for the acquisition and development of technology as research and development cost if, at the 
time of payment, the technology is under development, is not approved by the FDA or other regulatory agencies for 
marketing, has not reached technical feasibility, or otherwise has no foreseeable alternative future use. In accordance 
with this policy, we expensed the $8.0 million that we determined to be related to the license upon our entry into the 
agreement in July 2015 as research and development expense. 

In accordance with the ASC 730, Research and Development Costs, we concluded that we should defer and 
capitalize the $2.0 million that we determined to be related to the prepayment for the research cell bank services 
over the performance period. During both 2016 and 2015, we recognized $1.0 million of expense related to the 
research cell bank services. As of December 31, 2016, we fully recognized the deferred expense related to this 
agreement.

On August 28, 2017, we delivered to Inhibrx written notice of termination of the agreement for convenience. 
Pursuant to the terms of the agreement, the termination became effective on December 27, 2017.

F-27

10. Income Taxes 

For the year ended December 31, 2017, we recorded an income tax expense of $1.7 million as compared to an 
income tax benefit of $31.0 million for the year ended December 31, 2016 and an income tax expense of $37.8 
million for the year ended December 31, 2015. 

For the year ended December 31, 2017, the income tax expense related to deficiency interest was based on the 
Internal Revenue Service reducing our tentative net operating loss carryback refund claim filed in March 2017. For 
the year ended December 31, 2016, the federal tax benefit represents the reversal of the federal tax provided in 2015 
due to our ability to carryback federal tax attributes generated this year but not in an amount that is lower than any 
minimum taxes as provided under federal law. The state tax benefit in the current year represents the reversal of 
prior state income tax also to an amount that is not lower than any minimum tax as provided under state law. For the 
year ended December 31, 2015, the income tax expense was based on the taxable income generated in 2015 after 
utilization of our available federal and state net operating loss carryovers as well as any research credits including 
consideration of any applicable limitations on the use of these attributes as provided by the Internal Revenue Code 
and similar state statutes.

The components of our income tax (benefit) expense were as follows:

Year Ended December 31,
2016

2015

2017

Current tax (benefit) expense

Federal....................................................................  $
State........................................................................   
Total current (benefit) expense....................................   

1,703   $ (40,740)  $
(5,340)   
(46,080)   

1    
1,704    

47,369 
5,473 
52,842 

Deferred tax (benefit) expense

Federal....................................................................   
State........................................................................   
Total deferred tax (benefit) expense............................   

—    
—    
—    

15,032     
—     
15,032     

(15,032)
— 
(15,032)

Total tax (benefit) expense ..........................................  $

1,704   $ (31,048)  $

37,810  

The income tax (benefit) expense differs from the amount computed by applying the statutory federal income tax 
rate as follows (in thousands):

Year Ended December 31,
2016

2015

2017

Federal statutory income tax .......................................  $ (51,981)  $ (33,862)  $ 100,610 
3,558 
State statutory income tax ...........................................   
437 
Stock compensation.....................................................   
(443)
Nontaxable equity premiums.......................................   
(62,705)
Change in valuation allowance....................................   
— 
Remeasurement of deferred taxes ...............................   
(3,846)
Research and orphan drug credits................................   
— 
Interest charge, net of federal benefit ..........................   
199 
Other permanent items ................................................   
37,810  
Income tax (benefit) expense.......................................  $

(3,471)   
1     
715     
(4,847)   
(248)   
(168)   
12,152     
41,633     
—     
27,122     
(8,029)   
(11,029)   
—     
1,107     
(134)   
1,695     
1,704    $ (31,048)   $

F-28

 
 
 
 
 
   
   
 
   
     
      
  
 
   
     
      
  
   
     
      
  
 
     
      
       
 
 
 
 
 
 
   
   
 
 
On December 22, 2017, the Tax Cuts and Jobs Act of 2017, or the Tax Act, was signed into law. The Tax Act 
reduces the corporate tax rate from a top marginal rate of 35% to a flat rate of 21%. Although the Tax Act is 
generally effective January 1, 2018, GAAP requires recognition of the tax effects of new legislation during the 
reporting period that includes the enactment date, which was December 22, 2017. Since the Tax Act was passed late 
in the fourth quarter of 2017, and ongoing guidance and accounting interpretation are expected over the next 12 
months, we consider the accounting for the deferred tax re-measurement to be provisional. The primary impact of 
the Tax Act resulted from the re-measurement of deferred tax assets and liabilities due to the change in the corporate 
tax rate, reducing our deferred tax assets by $27.1 million with a corresponding reduction in our valuation 
allowance, which had no effect on our effective tax rate. Additional work will be necessary for a more detailed 
analysis of our deferred tax assets and liabilities as well as potential correlative adjustments. We do not expect any 
material subsequent adjustments to these amounts. Adjustments, if any, are not expected to have any impact to our 
results of operations due to our loss position and valuation allowance.

The tax effects of temporary differences and carryforwards that give rise to significant portions of the deferred tax 
assets consist of the following (in thousands): 

As of December 31,
2016
2017

Net operating loss carryforwards ...............................................  $
Research and orphan drug credits ..............................................   
Deferred revenue........................................................................   
Stock-based compensation.........................................................   
Capitalized license and depreciation basis differences..............   
Reserves, accruals and tenant improvement allowances ...........   
Total deferred tax assets .......................................................   
Less: valuation allowance ..........................................................   
Net deferred tax assets ...............................................................  $
Capitalized license and depreciation basis differences..............   
Total deferred tax liabilities .................................................  $
Total net deferred tax assets.......................................................   $

 $

39,405 
42,070 
3,701 
7,017 
— 
5,299 
97,492 
(94,315)   
3,177 
 $
(3,177)   
(3,177)  $
—    $

5,615 
18,182 
10,939 
6,908 
3,574 
1,736 
46,954 
(46,954)
— 
— 
— 
—  

Based on all available objective evidence, we determined it is more likely than not that we will not fully realize all 
our net deferred tax assets. The available objective evidence considered was our inability to further recover any 
taxes previously paid and expectation of future taxable income. Accordingly, we recorded a valuation allowance 
against all our net deferred tax assets for the years ended December 31, 2017 and 2016. We will continue to 
maintain a full valuation allowance on our net deferred tax assets until there is sufficient positive evidence to 
support the reversal of all or some portion of this allowance. Our valuation allowance increased by $47.4 million 
and $31.4 million during 2017 and 2016, respectively.  

At December 31, 2017, we had approximately $156.5 million of federal net operating losses available for future use 
that expire beginning in 2024 and federal research and Orphan Drug credits of approximately $36.7 million 
available for future use that expire beginning in 2026. 

At December 31, 2017, we also had approximately $154.3 million of state net operating losses available for future 
use that expire beginning in 2018 and state research credits of approximately $16.4 million that have no expiration 
date. 

F-29

 
 
 
 
 
 
   
 
  
  
  
  
  
  
Utilization of net operating loss and tax credit carryforwards may be subject to an annual limitation due to 
ownership change limitations provided by the Internal Revenue Code and similar state provisions. Annual 
limitations may result in expiration of net operating loss and tax credit carryforwards before some or all of such 
amounts have been utilized.

We had $13.6 million, $9.4 million and $3.4 million of unrecognized tax benefits as of December 31, 2017, 2016 
and 2015, respectively. The unrecognized tax benefits are primarily tax credits for all years and state net operating 
loss carryover related for certain prior years. As of December 31, 2017, we recorded $1.7 million of interest related 
to income taxes and no interest or penalties as of December 31, 2016. A reconciliation of our unrecognized tax 
benefits for the years ended December 31, 2016, 2015 and 2014 is as follows (in thousands): 

  Unrecognized  
  Income Tax  
Benefits

Balance as of December 31, 2014 ..................................  $
Additions for prior year tax positions .......................   
Additions for current year tax positions ...................   
Balance as of December 31, 2015 ..................................   
Additions for prior year tax positions .......................   
Additions for current year tax positions ...................   
Balance as of December 31, 2016 ..................................   
Additions for prior year tax positions .......................   
Additions for current year tax positions ...................   
Balance as of December 31, 2017 ..................................  $

2,237 
615 
580 
3,432 
4,394 
1,577 
9,403 
691 
3,490 
13,584  

In the event we are able to recognize these uncertain positions, most of the $13.6 million of the unrecognized tax 
benefits would reduce our effective tax rate. We currently have a full valuation allowance against our deferred tax 
assets, which would impact the timing of the effective tax rate benefit, should any of these uncertain positions be 
favorably settled in the future. We do not believe it is reasonably possible that our unrecognized tax benefits will 
significantly change within the next twelve months.

We file U.S. and state income tax returns with varying statutes of limitations. The tax years from 2002 forward 
remain open to examination due to the carryover of unused net operating losses and tax credits. We have no ongoing 
tax examinations by tax authorities at this time. 

F-30

 
 
 
 
 
11. Commitments and Contingencies 

Operating Leases

We entered into a lease agreement for our new corporate office and laboratory facility in December 2016, which we 
refer to as the lease. We moved into our new corporate office and laboratory facility in December 2017. The lease 
has an initial term of 10 years, beginning on the rent commencement date, with an option to extend the lease for an 
additional period of five years. We did not have to pay rent until the rent commencement date of January 1, 2018 
and rent is reduced by 50% for the first six months. The lease contains scheduled rent increases over the lease term. 
We recognize the related rent expense for the lease on a straight-line basis over the term of the lease with the 
difference between the rent paid and the straight-line rent expense recorded as deferred rent. As of December 31, 
2017 and 2016, deferred rent totaled $5.4 million and $0.9 million, respectively.

We received lease incentives totaling $14.4 million recorded as deferred rent from our landlord for a portion of the 
costs of leasehold improvements we made to the premises. We amortize the incentives on a straight-line basis over 
the term of the lease as a reduction of rent expense. As of December 31, 2017 and 2016, the unamortized leasehold 
improvement incentive totaled $13.6 million and $0.3 million, respectively. In addition, the lease required us to 
deliver an irrevocable standby letter of credit in an amount of $1.5 million to the landlord for the period 
commencing on the effective date of the agreement until at least 60 days after the expiration of the lease, subject to 
50% reduction on January 1, 2023 if certain conditions are met.

Rent expense for the years ended December 31, 2017, 2016 and 2015 was $6.9 million, $2.3 million, and $2.3million, 
respectively. The estimated future minimum commitments under our non-cancelable operating leases are as follows (in 
thousands):  

Year ending December 31:

2018............................................................................   
2019............................................................................   
2020............................................................................   
2021............................................................................   
2022............................................................................   
2023 and on................................................................   
Total estimated minimum payments ...............................  $

5,092 
7,025 
7,274 
7,524 
7,787 
43,230 
77,932  

Indemnifications 

As permitted under Delaware law and in accordance with our bylaws, we have agreed to indemnify our officers and 
directors for certain events or occurrences, subject to certain limits, while the officer or director is or was serving at 
our request in such capacity. The term of the indemnification period is equal to the officer’s or director’s lifetime. 

The maximum amount of potential future indemnification is unlimited; however, we currently hold director and 
officer liability insurance. This insurance limits our exposure and may enable us to recover a portion of any future 
amounts paid. We believe that the fair value of these indemnification obligations is minimal. Accordingly, we have 
not recognized any liabilities relating to these obligations for any period presented. 

We have certain agreements with service providers and other parties with which we do business that contain 
indemnification provisions pursuant to which we have agreed to indemnify the party against certain types of third-
party claims. We accrue for known indemnification issues when a loss is probable and can be reasonably estimated. 
We would also accrue for estimated incurred but unidentified indemnification issues based on historical activity. As 
we have not incurred any indemnification losses to date, there were no accruals for or expenses related to 
indemnification issues for any period presented. 

F-31

 
     
 
12. Subsequent Events

In January 2018, under the license and collaboration agreement with BMS, BMS triggered a $25 million milestone 
payment to us upon the dosing of the first patient in BMS’s randomized Phase 2 clinical trial of cabiralizumab in 
combination with Opdivo, with and without chemotherapy, as a treatment for patients with second-line pancreatic 
cancer.

In January 2018, we closed on a public offering of 5,897,435 shares of our common stock for net proceeds of 
approximately $108 million, which includes 769,230 shares sold upon the underwriters' full exercise of their option 
to purchase additional shares.

13. Selected Quarterly Financial Information (Unaudited) 

The following amounts are in thousands, except per share amounts: 

Quarterly Results of Operations

Quarter Ended

  March 31,

2017

June 30,
2017

    September 30,     December 31,    

2017

2017

(Unaudited)

Revenue ..............................................  $
Net loss...............................................   
Basic and diluted net loss per share ...   

10,135 
 $
(33,443)   
(1.21)   

7,822 
 $
(44,286)   
(1.58)   

 $
8,333 
(43,282)   
(1.54)   

13,218   
(29,211) 
(1.04)  

Quarterly Results of Operations

  March 31,

2016

June 30,
2016

    September 30,     December 31,    

2016

2016

(Unaudited)

Quarter Ended

Revenue ..............................................  $
Net loss...............................................   
Basic and diluted net loss per share ...   

 $
6,520 
(13,040)   
(0.49)   

 $
9,229 
(13,137)   
(0.49)   

 $
6,680 
(19,414)   
(0.72)   

8,262   
(20,106) 
(0.73)  

Basic and diluted net income (loss) per share is computed independently for each of the quarters presented. 
Therefore, the sum of quarterly basic and diluted per share amounts may not equal annual basic and diluted net 
income (loss) per share amounts. 

F-32

 
 
 
   
 
   
 
   
   
   
   
 
 
   
 
 
 
   
 
 
   
 
   
 
   
   
   
   
 
 
   
 
 
 
   
(cid:42)(cid:54)(cid:57)(cid:55) (cid:54)(cid:57)(cid:40)(cid:59)(cid:44)(cid:3)(cid:48)(cid:53) (cid:45)(cid:54)(cid:57) (cid:52)(cid:40)(cid:59)(cid:48) (cid:54)(cid:53)

(cid:52)(cid:40)(cid:53)(cid:40)(cid:46)(cid:44)(cid:52)(cid:44)(cid:53)(cid:59)

(cid:41)(cid:54)(cid:40)(cid:57)(cid:43)(cid:3)(cid:54)(cid:45)(cid:3)(cid:43)(cid:48)(cid:57)(cid:44)(cid:42)(cid:59)(cid:54)(cid:57)(cid:58)

(cid:42)(cid:54)(cid:57)(cid:55)(cid:54)(cid:57)(cid:40)(cid:59)(cid:44)(cid:3)(cid:47)(cid:44)(cid:40)(cid:43)(cid:56)(cid:60)(cid:40)(cid:57)(cid:59)(cid:44)(cid:57)(cid:58)

Aron Knickerbocker
President and Chief Executive Officer 

Lewis T. Williams, M.D., Ph.D. 
Executive Chairman of the Board

Nallakkan Arvindan
Senior Vice President, Strategic 
Technology Operations

Aron Knickerbocker
President, Chief Executive Officer  
and Director

Five Prime Therapeutics, Inc.
111 Oyster Point Boulevard 
South San Francisco, CA 94080
Telephone: (415) 365-5600
www.fiveprime.com

Kevin Baker, Ph.D.
Senior Vice President, Development 
Sciences

Helen Collins, M.D.
Senior Vice President and  
Chief Medical Officer

Jeff Coon 
Senior Vice President,  
Human Resources

Mark D. McDade 
Lead Independent Director

Franklin M. Berger, CFA
Director

Fred E. Cohen, M.D., D. Phil. 
Director

Kapil Dhingra, M.B.B.S. 
Director

Bryan Irving, Ph.D.
Senior Vice President, Research

Sheila Gujrathi, M.D. 
Director

Francis Sarena
Chief Strategy Officer and Secretary

Peder K. Jensen, M.D. 
Director

Garry Nicholson
Director

William R. Ringo
Director

(cid:59)(cid:57)(cid:40)(cid:53)(cid:58)(cid:45)(cid:44)(cid:57)(cid:3)(cid:40)(cid:46)(cid:44)(cid:53)(cid:59)(cid:3)(cid:40)(cid:53)(cid:43)(cid:3)
(cid:57)(cid:44)(cid:46)(cid:48)(cid:58)(cid:59)(cid:57)(cid:40)(cid:57)

Computershare Trust Company, N.A.
P.O. Box 505000
Louisville, KY 40233-5000
Telephone: (877) 373-6374
https://wwwus.computershare.com/
Investor/

(cid:48)(cid:53)(cid:43)(cid:44)(cid:55)(cid:44)(cid:53)(cid:43)(cid:44)(cid:53)(cid:59)(cid:3)(cid:57)(cid:44)(cid:46)(cid:48)(cid:58)(cid:59)(cid:44)(cid:57)(cid:44)(cid:43)(cid:3) 
(cid:55)(cid:60)(cid:41)(cid:51)(cid:48)(cid:42)(cid:3)(cid:40)(cid:42)(cid:42)(cid:54)(cid:60)(cid:53)(cid:59)(cid:48)(cid:53)(cid:46)(cid:3)(cid:45)(cid:48)(cid:57)(cid:52)

Ernst & Young LLP

(cid:58)(cid:59)(cid:54)(cid:42)(cid:50)(cid:47)(cid:54)(cid:51)(cid:43)(cid:44)(cid:57)(cid:3)(cid:48)(cid:53)(cid:45)(cid:54)(cid:57)(cid:52)(cid:40)(cid:59)(cid:48)(cid:54)(cid:53)

Our common stock is listed on The 
Nasdaq Global Select Market under the 
ticker symbol FPRX.

Copies of our Form 10-K and proxy 
statement filed with the Securities 
and Exchange Commission and other 
information pertinent to our investors, 
including contact information for investor 
relations inquiries, are available free 
of charge on our website at investor.
fiveprime.com.  

 
Five Prime Therapeutics, Inc.
111 Oyster Point Boulevard 
South San Francisco, CA 94080 
Telephone: (415) 365-5600

www.fiveprime.com