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CoStar Group

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Industry Real Estate - Services
Employees 1001-5000
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FY2018 Annual Report · CoStar Group
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-K

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

For the fiscal year ended December 31, 2018

Commission file number 0-24531

CoStar Group, Inc.
(Exact
name
of
registrant
as
specified
in
its
charter)

(State
or
other
jurisdiction
of
incorporation
or
organization)

(I.R.S.
Employer
Identification
No.)

Delaware

52-2091509

1331 L Street, NW, Washington, DC 20005

(Address
of
principal
executive
offices)
(zip
code)

(202) 346-6500

(Registrant’s
telephone
number,
including
area
code)

(877) 739-0486

(Registrant’s
facsimile
number,
including
area
code)

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

Title of Each Class

Common Stock, $.01 par value

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 x
  No ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes ¨
   No x

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 x
   No ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation
S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that registrant was required to submit such files.) Yes x
   No ¨

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
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.   x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or emerging
growth company.  See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2
of the Securities Exchange Act of 1934.

 
 
 
 
 
 
 
 
 
Large accelerated filer   x

Non-accelerated filer   ¨

Accelerated filer   ¨

Smaller reporting company   ¨

Emerging growth company   ¨

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. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes   ¨
No   x

Based on the closing price of the common stock on June 29, 2018 on the Nasdaq Global Select Market, the aggregate market value of registrant’s common stock
held by non-affiliates of the registrant as of June 29, 2018 was approximately $15 billion.

As of February 22, 2019 , there were 36,451,829 shares of the registrant’s common stock outstanding.

 
Portions of the registrant’s definitive proxy statement, which is expected to be filed with the Securities and Exchange Commission within 120 days after the

end of the registrant’s fiscal year ended December 31, 2018 , are incorporated by reference into Part III of this Report.

DOCUMENTS INCORPORATED BY REFERENCE

2

 
TABLE OF CONTENTS

Business

Risk Factors

Unresolved Staff Comments

Properties

Legal Proceedings

Mine Safety Disclosures

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

Selected Consolidated Financial and Operating Data

Management’s Discussion and Analysis of Financial Condition and Results of Operations

PART I

Item 1.

Item 1A.

Item 1B.

Item 2.

Item 3.

Item 4.

PART II

Item 5.

Item 6.

Item 7.

Item 7A.

Quantitative and Qualitative Disclosures about Market Risk

Item 8.

Item 9.

Item 9A.

Item 9B.

PART III

Item 10.

Item 11.

Item 12.

Item 13.

Item 14.

PART IV

Item 15.

Item 16.

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

Exhibits and Financial Statement Schedules

Form 10-K Summary

Signatures

Index to Consolidated Financial Statements

3

4

16

28

28

29

29

30

32

33

49

50

50

50

51

51

51

51

51

51

52

55

56

F-1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 1.

Business

PART I

In this report, the words “we,” “our,” “us,” “CoStar” or the “Company” refer to CoStar Group, Inc. and its direct and indirect wholly owned subsidiaries. This

report also refers to our websites, but information contained on those sites is not part of this report.

CoStar Group, Inc., a Delaware corporation, founded in 1987, is the number one provider of information, analytics and online marketplaces to the commercial
real estate industry in the United States (“U.S.”) and United Kingdom (“U.K.”) based on the fact that we offer the most comprehensive commercial real estate
database available; have the largest research department in the industry; own and operate leading online marketplaces for commercial real estate and apartment
listings in the U.S. based on the numbers of unique visitors and site visits per month; and provide more information, analytics and marketing services than any of
our competitors. We created and compiled our standardized platform of information, analytics and online marketplace services where industry professionals and
consumers  of  commercial  real  estate,  including  apartments,  and  the  related  business  communities,  can  continuously  interact  and  facilitate  transactions  by
efficiently accessing and exchanging accurate and standardized real estate-related information. Our service offerings span all commercial property types, including
office, retail, industrial, multifamily,  commercial  land, mixed-use and hospitality. We manage our business geographically in two operating segments, with our
primary areas of measurement and decision-making being North America, which includes the U.S. and Canada, and International, which includes the U.K., Spain,
Germany and France.

Strategy

Our strategy is to provide industry professionals and consumers of commercial real estate and apartments with critical knowledge to explore and complete
transactions by offering the most comprehensive, timely and standardized information on commercial real estate and apartments and the right tools to be able to
effectively  utilize  that  information.  Over  time,  we  have  expanded  our  services  for  commercial  real  estate  information,  analytics  and  online  marketplaces  in  an
effort to continue to meet the needs of the industry as it grows and evolves.

Our standardized platform includes the most comprehensive proprietary database in the industry; the largest research department in the industry; proprietary
data  collection,  information  management  and  quality  control  systems;  a  large  in-house  product  development  team;  a  broad  suite  of  web-based  information,
analytics  and  online  marketplace  services;  a  large  team  of  analysts  and  economists;  and  a  large,  diverse  base  of  clients.  Our  database  has  been  developed  and
enhanced for more than 30 years by a research department that makes thousands of daily database updates. In addition to our internal efforts to grow the database,
we have obtained and assimilated over 100 proprietary databases. Our comprehensive commercial real estate database powers our information services, sources
data  used  in  our  analytic  services  and  provides  content  for  most  of  our  online  marketplace  services.  Our  ability  to  utilize  the  same  commercial  real  estate
information across our standardized platform creates efficiencies in operations and improves data quality for our customers.

We deliver  our commercial  real  estate  information  content  to our U.S. customers  primarily  via an integrated  suite of online  service  offerings  that  includes
information about space available for lease, comparable sales information, information about properties for sale, tenant information, Internet marketing services,
analytical  capabilities,  information  for  clients’  websites,  information  about  industry  professionals  and  their  business  relationships,  data  integration  and  industry
news. We also operate complementary  online marketplaces for commercial real estate listings and apartment rentals. We strive to cross-sell our services to our
customers in order to best suit their needs.

We have also extended our offering of comprehensive commercial real estate information geographically to include the U.K., Canada, Spain, Germany and
France,  through  acquisitions  and  internal  growth  and  development.  Most  recently,  on  October  12,  2018,  we  acquired  Realla  Ltd.  ("Realla"),  the  operator  of  a
commercial property listings and data management platform in the U.K., including a free-to-list search engine for commercial property listings. Information about
CoStar’s revenues, long-lived assets and total assets derived from and located in, foreign countries is included in Notes 2 , 3 and 13 of the Notes to Consolidated
Financial  Statements  included  in  this  Annual  Report  on  Form  10-K.  Revenues;  net  income  (loss)  before  interest  and  other  income  (expense),  income  taxes,
depreciation and amortization (“EBITDA”); and total assets and liabilities for each of our segments are set forth in Notes 3 and 13 to our consolidated financial
statements.  Information  about  risks  associated  with  our  foreign  operations  is  included  in  “Item  1A.  Risk  Factors”  and  “Item  7A.  Quantitative  and  Qualitative
Disclosures about Market Risk” in this Annual Report on Form 10-K.

We have five flagship brands - CoStar ®
, LoopNet ®
, Apartments.com TM , BizBuySell ®
and LandsofAmerica TM . Our subscription-based services consist

primarily of information, analytics and online marketplace services offered over the Internet

4

to the commercial real estate industry and related professionals. Our subscription-based information services consist primarily of CoStar Suite ®
services. CoStar
Suite is sold as a platform of service offerings consisting of CoStar Property Professional®, CoStar COMPS Professional® and CoStar Tenant®, accessible via the
Internet  and  through  our  mobile  applications,  CoStar  Mobile  App  and  CoStar  Go.  CoStar  Suite  is  our  primary  service  offering  in  our  North  America  and
International operating segments.

Our LoopNet subscription-based, online marketplace enables commercial property owners, landlords, and brokers working on their behalf to list properties for
sale or for lease and to submit detailed information about property listings. Commercial real estate agents, buyers and tenants use LoopNet extensively to search for
available property listings that meet their criteria.

Apartments.com  TM  is  part

 of  our  network  of  apartment

 which  also  includes  ApartmentFinder.com  TM 

 ForRent.com®,
 marketing  sites,
ApartmentHomeLiving.com TM , WestsideRentals.com ®
, AFTER55.com®, CorporateHousing.com TM , ForRentUniversity.com® and Apartamentos.com TM , our
apartment-listing  site  offered  exclusively  in  Spanish.  Our  apartment  marketing  network  of  subscription-based  services  offers  renters  a  searchable  database  of
apartment  listings  and  provides  professional  property  management  companies  and  landlords  with  an  advertising  destination.  Our  apartment  marketing  network
draws on and leverages CoStar’s multifamily database, which contains detailed information on apartment properties. Our apartment marketing sites are designed to
meet renter preferences and demands, in order to drive traffic to those sites and attract advertisers who prefer to advertise on heavily trafficked apartment websites.
Our  network  of  apartment  marketing  sites  provide  a  comprehensive  selection  of  rentals,  information  on  actual  availabilities  and  rents,  and  in-depth  data  on
neighborhoods, including restaurants, nightlife, history, schools and other facts important to renters. To help renters find the information that meets their needs, the
sites  also  offer  innovative  search  tools  such  as  the  Polygon  TM Search  tool,  which  allows  renters  to  specifically  define  the  area  in  which  they  want  to  find  an
apartment. Apartments.com and Apartamentos.com also offer Plan Commute tools, which allow renters to search property listings that meet their transportation
needs.  We  completed  the  acquisition  of  ForRent,  a  division  of  Dominion  Enterprises,  including  the  ForRent.com,  AFTER55.com,  CorporateHousing.com  and
ForRentUniversity.com  apartment  marketing  sites  on  February  21,  2018.  We  also  offer  complementary  services  to  the  apartment  industry,  including  tenant
screening services, rental applications and payments processing and lease renewals. On November 8, 2018, we acquired Cozy Services, Ltd. ("Cozy"), a leading
provider  of  online  rental  solutions  that  provides  a  broad  spectrum  of  services  to  both  landlords  and  tenants,  including  property  listings,  rent  estimates,  rental
applications, tenant screening, online rent payments and expense tracking.

,

Our  BizBuySell  services,  which  include  BizQuest®,  provide  an  online  marketplace  for  businesses  for  sale.  Our  LandsofAmerica  services,  which  include

LandAndFarm and LandWatch®, provide an online marketplace for rural lands for sale that is also accessible via our Land.com domain.

We also provide real estate and lease management solutions, including lease administration and abstraction services, through our CoStar Real Estate Manager
service  offerings,  as  well  as,  market  research,  consulting  and  analysis,  portfolio  and  debt  analysis,  management  and  reporting  capabilities  through  our  CoStar
Investment  Analysis  and  CoStar  Risk  Analytics  service  offerings.  We  have  created  and  are  continually  improving  our  standardized  platform  of  information,
analytics  and  online  marketplaces  where  members  of  the  commercial  real  estate  and  related  business  community  can  continuously  interact  and  facilitate
transactions by efficiently accessing and exchanging accurate and standardized commercial real estate information.

Our services are typically distributed to our clients under subscription-based license agreements that renew automatically, a majority of which have a term of
one year. Upon renewal, many of the subscription contract rates may change in accordance with contract provisions or as a result of contract renegotiations. To
encourage clients to use our services regularly, we generally charge a fixed monthly amount for our subscription-based services rather than charging fees based on
actual  system  usage  or  number  of  paid  clicks.  Depending  on  the  type  of  service,  contract  rates  are  generally  based  on  the  number  of  sites,  number  of  users,
organization size, the client's business focus, geography, the number and types of services to which a client subscribes, the number of properties a client advertises
and the prominence and placement of a client's advertised properties in the search results. Our subscription clients generally pay contract fees on a monthly basis,
but in some cases may pay us on a quarterly or annual basis.

Expansion and Growth

Acquisitions

We  have  continually  expanded  the  geographical  coverage  of  our  existing  information  services  and  developed  new  information,  analytics  and  online
marketplace  services.  In  addition  to  organic  growth,  we  have  grown  our  business  through  strategic  acquisitions.  On  February  21,  2018,  we  completed  the
acquisition of ForRent, a division of Dominion Enterprises. ForRent’s primary service is digital advertising through a network of four multifamily websites, which
includes  ForRent.com,  AFTER55.com,  CorporateHousing.com  and  ForRentUniversity.com.  On  October  12,  2018,  we  acquired  Realla  Ltd.,  the  operator  of  a
commercial property listings and data management platform in the U.K., including a free-to-list search engine for commercial property listings. On November 8,
2018, we acquired Cozy, a leading provider in the U.S. of online rental solutions that provides a broad spectrum

5

  
of  services  to  both  landlords  and  tenants,  including  property  listings,  rent  estimates,  rental  applications,  tenant  screening,  online  rent  payments,  and  expense
tracking.

Development, Investments and Expansion

We are committed to supporting, improving and enhancing our information, analytics and online marketplace solutions, including expanding and improving
our offerings  for property  managers  and renters.  We expect  to continue  our software  development  efforts  to improve  existing  services,  introduce  new services,
integrate and cross-sell services, and expand and develop supporting technologies for our research, sales and marketing organizations.

We evaluate potential changes to our service offerings from time to time in order to better align the services we offer with customers’ needs. Further, in some
cases, when integrating and coordinating our services and assessing industry and client needs, we may decide to combine, shift focus from, de-emphasize, phase
out, or eliminate a service that, among other things, overlaps or is redundant with other services we offer. In the event that we eliminate or phase out particular
service  offerings,  we  may  experience  reduced  revenues  and  earnings.  The  decision  to  eliminate  or  phase  out  a  service  offering  may  also  ultimately  result  in
increased revenues and earnings from sales of other services we offer in lieu of the eliminated or phased out services. However, we cannot predict with certainty
the amount or timing of any reductions in revenues and earnings or subsequent increases in revenues and earnings, if any, resulting from the elimination or phasing
out of any service offering.

In  2018,  we  completed  the  integration  of  ForRent,  including  the  ForRent  sales  team  and  the  services  offered  by  ForRent  and  have  worked  to  maintain
ForRent's  relationships  with  its  customers  that  existed  prior  to  the  acquisition.  ForRent.com  is  expected  to  remain  a  distinct,  complementary  brand  to
Apartments.com, giving property managers and owners more exposure for their listings.

We are also continuing to develop new, and improve existing, online rental property service offerings for the apartments industry. We plan to integrate the
Cozy suite technology into the Aparments.com platform, creating an integrated online rental solution. In particular, we expect to implement the ability for renters
to apply for leases online, for landlords to run tenant credit and background checks online and, eventually,  for landlords and tenants to generate  and enter  into
leases and to make and process payments online.

We are expanding the geographic reach of our services. We plan to integrate Realla with our CoStar UK operations, including development of a single point of
data entry to allow our clients to display their commercial real estate listings through the CoStar Suite service offering and to make them visible to prospective
tenants and investors through Realla’s marketing portal.

We  believe  that  our  integration  efforts  and  continued  investments  in  our  services,  including  expansion  of  our  existing  service  offerings,  have  created  a
platform for long-term revenue growth. We expect these investments to result in further penetration of our subscription-based services and the successful cross-
selling of our services to customers in existing markets.

We have invested in the expansion and development of our field sales force to support the growth and expansion of our company and our service offerings.
We plan to continue to invest in, evaluate and strategically position our sales force as the Company continues to develop and grow. We also continue to invest in
our research operations to support continued growth of our information and analytics offerings to meet the growing content needs of our clients. While we believe
investments we make in our business create a platform for growth, those investments may reduce our profitability and adversely affect our financial position. We
introduced new enhancements on the CoStar homepage, including a Listing Manager feature that we believe will increase the quantity and quality of the listing
information available by enabling brokers and other industry participants to load information directly into the integrated system.  Over time, we expect this feature
will reduce the time and costs associated with researching and maintaining our comprehensive database of commercial real estate information.

Industry Overview

The market for commercial real estate information and analysis is vast based on the variety, volume and value of transactions related to commercial real estate.
Each transaction has multiple participants and multiple information requirements, and in order to facilitate transactions, industry participants must have extensive,
accurate and current information and analysis. Members of the commercial real estate and related business community require daily access to current data such as
space availability, properties for sale, rental units available, rental rates, vacancy rates, tenant movements, sales comparables, supply, new construction, absorption
rates and other important market developments to carry out their businesses effectively. Market research (including historical and forecast conditions) and applied
analytics are instrumental to the success of commercial real estate industry participants operating in the current economic environment. There is a strong need for
an efficient marketplace, where commercial

6

real  estate  professionals  can  exchange  information,  evaluate  opportunities  using  standardized  data  and  interpretive  analyses,  and  interact  with  each  other  on  a
continuous basis.

A  large  number  of  parties  involved  in  the  commercial  real  estate  and  related  business  community  make  use  of  the  services  we  provide  in  order  to  obtain

information they need to conduct their businesses, including:

• Sales and leasing brokers

• Government agencies

• Property owners

• Property managers

• Mortgage-backed security issuers

• Appraisers

• Design and construction professionals

• Pension fund managers

• Real estate developers

• Reporters

• Real estate investment trust managers

• Tenant vendors

•

Investment bankers

• Commercial bankers

• Mortgage bankers

• Mortgage brokers

• Retailers

• Building services vendors

• Communications providers

•

•

•

Insurance companies’ managers

Institutional advisors

Investors and asset managers

The  commercial  real  estate  and  related  business  community  historically  operated  in  an  inefficient  marketplace  because  of  the  fragmented  approach  to
gathering  and  exchanging  information  within  the  marketplace.  Various  organizations,  including  hundreds  of  brokerage  firms,  directory  publishers  and  local
research companies, collected data on specific markets and developed software to analyze the information they independently gathered. This highly fragmented
methodology  resulted  in  duplication  of  effort  in  the  collection  and  analysis  of  information,  excessive  internal  cost  and  the  creation  of  non-standardized  data
containing varying degrees of accuracy and comprehensiveness, resulting in a formidable information gap.

The  creation  and  maintenance  of  a  standardized  information  platform  for  commercial  real  estate  requires  infrastructure  including  a  standardized  database,
accurate and comprehensive research capabilities, experienced analysts, easy to use technology and intensive participant interaction. By combining our extensive
database, researchers, our experienced team of analysts and economists, technological expertise and broad customer base, we believe that we have created such a
platform.

The apartment rental advertising industry serves property managers and owners who are tasked with finding renters to occupy vacant apartments and renters
who are searching for their next home.  Property managers have several options at their disposal, including their own websites, drive-by and outdoor advertising,
traditional classified ads, free online listing services and internet listings services (“ILS”), like Apartments.com and the network of apartment listing websites we
own and operate. Many apartment ILS websites feature only the rental availabilities that larger property owners pay to advertise, resulting in a poor user experience
in which the renter’s search criteria return either limited or no results, irrelevant results or stale results that do not represent actual availabilities.

We believe that consumers expect accurate, actionable and comprehensive apartment rental information. Our apartment ILS websites include renter-focused
features  like  the  ability  to  filter  search  results  according  to  various  criteria  (e.g.,  commute  time  to  work);  professional  images  of  the  properties,  including
immersive  videos  and  3-D  interactive  models;  custom  neighborhood  profiles;  and  tenant  reviews.  Our  network  of  apartment  listing  websites  draws  on  our
multifamily  database  and  includes  researched  and  verified  information.  We  proactively  gather  information  on  available  rentals  to  improve  the  accuracy  of  the
listings on our apartment ILS websites, including real time unit-level availability, current pricing, and rent specials.  We have continually invested in our network
to improve the features and services offered to property managers and website users. Recent additions include: dynamic lead forms that provide more information
about prospective residents, a reporting suite that provides customers with rent comparables, making rent trends information publicly available and free digital ad
retargeting.  We  believe  that  we  have  created  and  maintain  easily  searchable  apartment  ILS  websites  with  a  comprehensive  selection  of  rentals,  information  on
actual rental availabilities and rents, and in-depth data on neighborhoods.

CoStar’s Comprehensive Database

CoStar has spent more than 30 years building and acquiring a database of commercial real estate information, which includes information on leasing, sales,
comparable sales, tenants, and demand statistics, as well as digital images. This highly complex database is comprised of hundreds of data fields, tracking such
categories as location, site and zoning information, building characteristics, space and unit availability, tax assessments, ownership, sales and lease comparables,
space requirements, number

7

of retail stores, number of listings, mortgage and deed information, for-sale and for-lease listings, income and expense histories, tenant names, lease expirations,
contact  information,  historical  trends,  demographic  information  and  retail  sales  per  square  foot.  The  database  also  includes  building  photographs,  aerial
photographs, 3D virtual apartment tours, plat maps and floor plans.

CoStar Research

Research
Department.
Our research professionals undergo an extensive training program so that we can maintain consistent research methods and processes
throughout our research department. Our researchers collect and analyze commercial real estate information through phone calls, e-mails and Internet updates, in
addition to field inspections, public records review, news monitoring and direct mail. We have also set up direct feeds from larger apartment sites and have put in
place an automated system that compiles information sourced from the Internet in order to provide the most up-to-date information on rental availabilities.

Our researchers are responsible for maintaining the accuracy and reliability of our database information. As part of their update process, researchers develop
cooperative relationships with industry professionals that allow them to gather useful information. Because of the importance commercial real estate professionals
place on our data and our prominent position in the industry, many of these professionals routinely take the initiative and proactively report available space and
transactions to our researchers.

CoStar's field research effort includes physical inspection of properties in order to research new availabilities, find additional property inventory, photograph
properties,  collect  tenant  information,  and  verify  existing  information.  CoStar's  field  research  effort  includes  creating  high  quality  videos  of  interior  spaces
(including  walk-through  videos  and  3D  virtual  tours),  amenities  and  exterior  features  of  properties.  CoStar  utilizes  high-tech,  field  research  vehicles  across  the
U.S., Canada, the U.K., Spain and Germany. A significant majority of these vehicles are customized, energy efficient hybrid cars that are equipped with computers,
Global  Positioning  System  tracking  software,  high  resolution  digital  cameras  and  handheld  laser  instruments  to  precisely  measure  buildings  and  geo-code  and
position them on digital maps. Each CoStar vehicle uses wireless technology to track and transmit field data. A typical site inspection consists of photographing the
building,  measuring  the  building,  geo-coding  the  building,  capturing  “For  Sale”  or  “For  Lease”  sign  information,  counting  parking  spaces,  assessing  property
condition and construction, and gathering tenant information. Field researchers also canvass properties, collecting tenant data suite by suite. We also utilize a low-
flying  airplane  and  a  fleet  of  drones  to  conduct  aerial  research  of  commercial  real  estate.  We  place  researchers  on  the  low-flying  aircraft  to  scout  additional
commercial developments and take aerial photographs and videos. Our U.S. drone operators are Federal Aviation Administration certified and trained to capture
aerial  photographs and videos of commercial  real estate.  Our drone operators  in the U.K. are certified  and trained  to Civil Aviation Authority standards with a
permission for commercial operations pending.

Data
and
Image
Providers.
We license a small portion of our data and images from public record providers and third-party data sources. Licensing agreements
with these entities allow us to use a variety of commercial real estate information, including property ownership, tenant information, demographic information,
maps,  aerial  photographs  and  3D  virtual  apartment  tours  of  apartment  communities,  all  of  which  enhance  various  CoStar  services.  These  license  agreements
generally grant us a non-exclusive license to use the data and images in the creation and supplementation of our information, analytics and online marketplaces.

Management
and
Quality
Control
Systems.
Our research processes include automated and non-automated controls to ensure the integrity of the data collection
process.  A  large  number  of  automated  data  quality  tests  check  for  potential  errors,  including  occupancy  date  conflicts,  available  square  footage  greater  than
building area, typical floor space greater than land area and expired leases. We also monitor changes to critical fields of information to ensure all information is
kept in compliance with our standard definitions and methodology. Our non-automated quality control procedures include:

•
•
•
•

calling our information sources on recently updated properties to re-verify information;
performing periodic research audits and field checks to determine if we correctly canvassed buildings;
providing training and retraining to our research professionals to ensure accurate and standardized data compilation; and
compiling measurable performance metrics for research teams and managers for feedback on data quality.

Finally, one of the most important and effective quality control measures we rely on is feedback provided by the commercial real estate professionals using

our data every day.

Proprietary Technology

CoStar’s information technology professionals focus on developing new services and features for our customers, improving and maintaining existing services,

integrating our current services, securing our comprehensive database of commercial real estate

8

information and delivering research automation tools that improve the quality of our data and increase the efficiency of our research analysts.

Our  information  technology  team  is  responsible  for  developing,  improving  and  maintaining  CoStar's  information,  analytics  and  online  marketplace
services.  Our  information  technology  team  is  also  responsible  for  developing  the  infrastructure  necessary  to  support  CoStar’s  business  processes,  our
comprehensive  database  of  commercial  real  estate  information,  analytics  and  online  marketplaces  and  our  extensive  image  library.  The  team  implements
technologies  and  systems  that  introduce  efficient  workflows  and  controls  designed  to  increase  the  production  capacity  of  our  research  teams  and  improve  the
quality of our data. Over the years, the team has developed data collection and quality control mechanisms that we believe are unique within the commercial real
estate industry. The team continues to develop and modify our enterprise information management system that integrates CoStar's sales, research, field research,
customer  support  and  accounting  information.  We  use  this  system  to  maintain  our  commercial  real  estate  research  information,  manage  contacts  with  the
commercial  real  estate  community,  provide  research  workflow  automation  and  conduct  daily  automated  quality  assurance  checks.  In  addition,  our  information
technology team has also developed fraud-detection technology to detect and prevent unauthorized access to our services. To supplement the measures we take to
prevent misuse of our information, we recently added state of the art adaptive authentication technology to the login process of our CoStar Suite product.

Our information technology professionals maintain the servers and network components necessary to support CoStar services and research systems. CoStar's
core services are served from multiple data centers to support uninterrupted service for our customers. CoStar’s services are continually monitored in an effort to
ensure our customers fast and reliable access.

CoStar's  comprehensive  data  protection  policy  provides  for  use  of  secure  networks,  strong  passwords,  encrypted  data  fields,  off-site  storage  and  other

protective measures in an effort to ensure the availability and security of all core systems.

Services

Our suite of information, analytics and online marketplaces is branded and marketed to our customers. Our services are primarily derived from a database of
building-specific information and offer customers specialized tools for accessing, analyzing and using our information. Over time, we have enhanced and expect to
continue to enhance our existing information, analytics and online marketplaces and we have developed and expect to continue to develop additional services that
make use of our comprehensive database to meet the needs of our existing customers as well as potential new categories of customers.

Our principal information, analytics and online marketplace services, are described in the following paragraphs:

Information and analytics

CoStar
Suite®

CoStar
Suite®
is our platform of service offerings consisting of CoStar Property Professional®, CoStar COMPS Professional® and CoStar Tenant® and is

accessible via the Internet and through our mobile applications, CoStar Mobile App and CoStar Go.

CoStar 
Property 
Professional
 ®  CoStar  Property  Professional,  or  “CoStar  Property,”  is  the  Company’s  flagship  service.  It  provides  subscribers  a
comprehensive inventory of office, industrial, retail and multifamily properties and land in markets throughout the U.S., the U.K. and parts of Canada, including
for-lease  and for-sale  listings,  historical  data, building photographs, maps and floor plans. Commercial  real estate  professionals  use CoStar Property to identify
available space for lease, evaluate leasing and sale opportunities, value assets and position properties in the marketplace. Our clients also use CoStar Property to
analyze  market  conditions  by  calculating  current  vacancy  rates,  absorption  rates  or  average  rental  rates,  and  forecasting  future  trends  based  on  user  selected
variables. CoStar Property provides subscribers with powerful map-based search capabilities as well as a user controlled, password protected extranet (or electronic
“file cabinet”) where brokers may share space surveys and transaction-related documents online, in real time, with team members. When used together with CoStar
Connect®,  CoStar  Property  enables  subscribers  to  share  space  surveys  and  transaction-related  documents  with  their  clients,  accessed  through  their  corporate
website. CoStar Property, along with all of CoStar’s other core information, analytics and online marketplaces, is delivered to desktop, mobile and other Internet-
connected devices.

CoStar
COMPS
Professional
® CoStar COMPS Professional, or “CoStar COMPS,” 

provides comprehensive coverage of comparable commercial real estate
sales information in the U.S., the U.K. and parts of Canada. It is the industry’s most comprehensive database of comparable sales transactions and is designed for
professionals who need to research property comparables, identify market trends, expedite the appraisal process and support property valuations. CoStar COMPS
offers subscribers numerous fields of property information, access to support documents (e.g., deeds of trust) for new comparables,

9

  
demographics and the ability to view for-sale properties alongside sold properties in three formats – plotted on a map, aerial image or in a table.

CoStar
Tenant
® CoStar Tenant is a detailed online business-to-business prospecting and analytical tool providing commercial real estate professionals with
the most comprehensive commercial  real estate-related  tenant information available in the U.S., the U.K. and parts of Canada. CoStar Tenant 

profiles tenants
occupying space in commercial buildings and provides updates on lease expirations - one of the service’s key features - as well as occupancy levels, growth rates
and numerous other facts. Delivering this information via the Internet allows users to target prospective clients quickly through a searchable database that identifies
only those tenants meeting certain criteria.

CoStar
Lease
Comps
® CoStar Lease Comps, included as part of CoStar Suite ®
services, provides subscribers an integrated solution that captures, manages
and  maintains  their  lease  data  together  with  data  from  CoStar  researched  lease  comparables.  CoStar  Lease  Comps  also  provides  the  ability  to  analyze  this
combined lease dataset from an aggregate analytic perspective.

CoStar
Lease
Analysis®
CoStar Lease Analysis is a workflow tool that is part of CoStar Suite and allows subscribers to incorporate CoStar data with their
own data to perform in-depth lease analyses. CoStar Lease Analysis can be used to produce an understandable cash flow analysis as well as key metrics about any
proposed  or  existing  lease.  It  combines  financial  modeling  with  CoStar’s  comprehensive  property  information,  enabling  the  subscriber  to  compare  lease
alternatives.

CoStar
Advertising®
CoStar Advertising offers property owners and brokers a highly targeted and cost effective way to market a space for lease or a property
for sale directly to CoStar subscribers looking for that type of space through interactive advertising. Our advertising model is based on varying levels of exposure,
enabling  the  advertiser  to  target  as  narrowly  or  broadly  as  its  budget  permits.  With  the  CoStar  Advertising  program,  when  the  advertiser’s  listings  appear  in  a
results set, they receive priority positioning and are enhanced to stand out. The advertiser can also purchase exposure in additional submarkets, or the entire market
area so that their ad will appear even when the listing would not be returned in a results set.

CoStar
Private
Sale
Network®
CoStar Private Sale Network provides clients with custom-designed and branded websites to market their listings directly to
investors.  CoStar  Private  Sale  Network  allows  investors  to  customize  a  commercial  real  estate  website  and  build  and  send  email  communications  to  announce
listings, calls for offers and bid deadlines.

CoStar
Mobile 
App
and
CoStar
Go
 CoStar Mobile App is an iOS and Android application that provides CoStar subscribers mobile access to their CoStar
subscription. CoStar Go is an iPad app that provides CoStar Suite subscribers a single, location-centric mobile interface that allows users to access and display
comprehensive information on millions of properties and gain instant access to analytic data and demographic information from the field.

Information
services

CoStar 
Real 
Estate 
Manager®
  CoStar  Real  Estate  Manager  is  a  real  estate  and  asset  management  and  lease  accounting  software  solution  designed  for
corporate  real  estate  managers,  company  executives,  financial  accounting  directors,  business  unit  directors,  brokers  and  project  managers.  CoStar  Real  Estate
Manager helps users connect real estate initiatives with company strategic goals, streamline portfolio operations, automate the process for collecting and managing
space  requests,  reduce  occupancy  costs  with  analytics  that  track  location  performance  against  targets  and  maximize  location  performance  through  proactive
portfolio management. Additionally, the software is used to help companies manage their lease accounting and reporting requirements. 

CoStar 
Risk 
Analytics® 
COMPASS
 CoStar  Risk  Analytics  COMPASS  is  a  commercial  real  estate  risk  management  tool.  It  allows  users  to  calculate
probability of default, loss given default, expected loss and unexpected loss at various confidence levels for a loan or a portfolio. It provides direct comparisons of
credit risk and refinance risk across time, market, property type and loan structure for all macroeconomic forecast (including federal stress testing / comprehensive
capital analysis and review) scenarios. CoStar Risk Analytics COMPASS is used by lenders, issuers, servicers, ratings agencies and regulators to estimate required
loss reserves, economic capital and regulatory capital, target lending opportunities, set pricing strategy, objectively compare/price loans, more effectively allocate
capital, manage refinance risk and conduct stress testing. Clients for CoStar Risk Analytics COMPASS services or data include most of the Systemically Important
Financial Institutions as well as a large number of other top-500 banks, insurance companies, hedge funds and government financial regulators.

CoStar
Brokerage
Applications®
CoStar Brokerage Applications provides commercial real estate brokerage firms the latest tools to effectively manage and
optimize  business  operations,  marketing,  and  research  efforts.  This  Enterprise  Resource  Planning  platform  allows  users  to  manage  their  transactions,  broker
commissions, and customer information, and to track critical dates as well as employee or organization-wide results and current and prospective projects.

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CoStar
Investment
Analysis®
Request
 CoStar Investment Analysis Request is the first business intelligence software solution built specifically for managing
commercial real estate investments. CoStar Investment Analysis Request helps users eliminate some of the difficulties of consolidating real estate investment data
from disparate sources and facilitates standardization of information presentation and reporting across an organization. CoStar Investment Analysis Request also
provides a platform for users to develop business intelligence and reporting capabilities. 

CoStar
Investment
Analysis®
Portfolio
Maximizer

CoStar Investment Analysis Portfolio Maximizer is an industry leading real estate portfolio management
software solution. CoStar Investment Analysis Portfolio Maximizer allows users to model partnership structures, calculate waterfall distributions and fees, model
and analyze debt obligations and create multiple “what if” scenarios for alternative investment decisions.

Online marketplaces

Multifamily

Apartments.com
 TM    Apartments.com,  part  of  our  network  of  apartment  marketing  sites,  provides  a  variety  of  ad  packages  and  enhancements  that  allow
property managers and owners to fully showcase their apartment community through increased exposure and interactions that allow renters to view, engage and
connect with the community, including featured community listings, customized flyers and brochures, and special offer coupons.

ApartmentFinder.com
 TM  ApartmentFinder.com,  part  of  our  network  of  apartment  marketing  sites,  provides  lead  generation,  advertising  and  Internet

marketing solutions to property managers and owners through its main service, ApartmentFinder.com.

ForRent.com®
ForRent.com, part of our network of apartment marketing sites, provides digital advertising through a network of four multifamily websites -

which includes ForRent.com, AFTER55.com, CorporateHousing.com and ForRentUniversity.com

ApartmentHomeLiving.com
TM   ApartmentHomeLiving.com, part of our network of apartment marketing sites, provides renters with another national online

apartment rentals resource that showcases apartments for rent with official prices, pictures, floor plans and detailed information on each apartment.

Apartamentos.com
 TM  Apartamentos.com,  part  of  our  network  of  apartment  marketing  sites,  provides  Spanish  speaking  renters  with  a  national  online

apartment rentals resource offered exclusively in Spanish, with the same primary features found on Apartments.com.

WestsideRentals.com®
WestsideRentals.com, part of our network of apartment marketing sites, specializes in Southern California real estate rentals.

Cozy.co
Cozy provides online rental solutions to both landlords and tenants, including property listings, rent estimates, rental applications, tenant screening,

online rent payments, and expense tracking.

Commercial
property
and
land

LoopNet
Premium
Lister®
LoopNet Premium Lister is designed for commercial real estate professionals and other customers who seek the broadest possible
exposure  for  their  listings,  access  to  leads  lists,  and  advanced  marketing  and  searching  tools.  LoopNet  Premium  Lister  provides  subscribers  with  the  ability  to
market their listings to all LoopNet.com visitors, as well as numerous other features. LoopNet Premium Lister is available for a quarterly or annual subscription.

LoopNet
Power
Listings
LoopNet Power Listings is designed for commercial real estate professionals and other customers who seek the broadest possible
exposure for their listings, access to leads lists, and advanced marketing and searching tools. LoopNet Power Listings provides subscribers with full access to three
of the industry’s top commercial real estate marketplaces: LoopNet, Cityfeet and Showcase, as well as 200+ online newspaper websites including the Wall Street
Journal. LoopNet Power Listings is available for a quarterly or annual subscription.

LoopLink®
LoopLink  is  an  online  real  estate  marketing  and  database  services  suite  that  enables  commercial  real  estate  firms  to  showcase  their  available
properties both on the LoopNet marketplace  and on the brokerage  firm’s own website using hosted search software. Within LoopNet, each LoopLink listing is
branded with the client’s logo and is hyperlinked to the client’s website. Additionally, the LoopLink service provides customizable, branded property search and
results screens that can be integrated into the client’s website. The LoopNet import service offers the opportunity to simplify the process of submitting listings to
LoopNet

11

from  the  client’s  internal  databases,  and  features  advanced  data  matching  and  data  integrity  rules  and  file  conversion  capabilities.  LoopNet  charges  a  monthly
subscription fee to commercial real estate firms for the LoopLink service. Key features of LoopLink include comprehensive reporting and listing administration
tools, property mapping for geographic and feasibility analysis, thumbnail photos and expanded property descriptions in search results.

Listing
Manager
TM Listing Manager is an online tool that allows users to add and manage their listings on CoStar and LoopNet, all in one place. Among other

features, LoopNet users can monitor listing performance, access lead and prospect reports and upgrade exposure for listings on LoopNet.

Realla
Realla  is  a  commercial  property  listings  and  data  management  platform  in  the  U.K.,  including  a  free-to-list  search  engine  for  commercial  property

listings.

LandsofAmerica
TM , 
LandAndFarm
TM , and
LandWatch
®
LandsofAmerica.com , LandAndFarm.com, and LandWatch.com are leading online marketplaces
for rural land for sale. Sellers pay a fee to list their land for sale, and interested buyers can search the respective sites' listings for free. The LandsofAmerica.com
and LandAndFarm.com websites are also accessible via our Land.com domain.

BizBuySell®
and
BizQuest®
BizBuySell.com and BizQuest.com are leading online marketplaces for operating businesses for sale. Business sellers pay a fee
to list their operating businesses for sale, and interested buyers can search the respective sites' listings for free. The BizBuySell and BizQuest Franchise Directories
allow interested business buyers to search hundreds of franchise opportunities, and franchisors can list their availabilities in the directory on a cost per lead basis.

Clients

We  draw  clients  from  across  the  commercial  real  estate  and  related  business  community,  including  commercial  real  estate  brokers,  owners,  developers,
landlords, property managers, financial institutions, retailers, vendors, appraisers, investment banks, government agencies and other parties involved in commercial
real estate. For the years ended December 31, 2016 , 2017 and 2018 , no single client accounted for more than 5% of our revenues.

Sales and Marketing

Our sales teams are primarily located in field sales offices throughout the U.S. and in offices outside of the U.S., including, among others, Canada, London,
England; Madrid, Spain; and Freiburg, Germany. Our inside sales teams are primarily located in our Washington, DC office. These teams prospect for new clients
and perform product and service demonstrations exclusively by telephone and over the Internet to support the direct sales force.

Our local offices typically serve as the platform for our in-market sales, customer support and field research operations for their respective regions. The sales
force  is  responsible  for  selling  to  new  prospects,  training  new  and  existing  clients,  providing  ongoing  customer  support,  renewing  existing  client  contracts  and
identifying cross-selling opportunities. In addition, the sales force has primary front line responsibility for customer care. Our customer service and support staff is
charged  with  ensuring  high  client  satisfaction  by  providing  ongoing  customer  support.  In  2016,  we  formed  a  customer  relationship  team  consisting  of  client
relationship  managers  in  the  sales  organization,  to  drive  even  greater  usage  of  our  products  and  services.  The  client  relationship  managers  are  responsible  for
training existing users, sharing market specific research with clients, ensuring accurate and timely listings and ensuring client driven product enhancement ideas
are shared with our product development team.

Our sales strategy is to aggressively attract new clients, while providing ongoing incentives for existing clients to subscribe to additional products and services
in  order  to  achieve  high  renewal  rates.  We  actively  manage  client  accounts  in  order  to  retain  clients  by  providing  frequent  service  demonstrations  as  well  as
company-client  contact  and communication.  In January 2018, we launched a two-week, 30-city  road show to showcase CoStar's technologies  to customers  and
prospective users. The presentations focused on how technological change is impacting the commercial real estate industry, including presentations on tools such
as  3D  cameras,  infrared  drones  and  augmented  reality.  We  place  a  premium  on  training  new  and  existing  client  personnel  on  the  use  of  our  services  so  as  to
promote maximum client utilization and satisfaction with our services. In the fall of 2018, we launched a customer service initiative across the U.K. to ensure client
satisfaction with our product and to train customers on new features and services. Our sales strategy also involves entering into multi-year, multi-market license
agreements with our larger clients.

We seek to make our services  essential  to our clients’  businesses. To encourage  clients  to use our services  regularly,  we generally  charge a fixed monthly
amount for our subscription-based information services rather than fees based on actual system usage. Contract rates for subscription-based services are generally
based  on  the  number  of  sites,  number  of  users,  organization  size,  the  client’s  business  focus,  geography,  the  number  and  types  of  services  to  which  a  client
subscribes, the number of properties

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a client advertises and the prominence and placement of a client's advertised properties in the search results. Our subscription clients generally pay contract fees on
a monthly basis, but in some cases may pay us on a quarterly or annual basis.

Our  primary  marketing  methods  include:  service  demonstrations;  face-to-face  networking;  web-based  marketing;  direct  marketing;  communication  via  our
corporate website and news services; participation in trade show and industry events; Company-sponsored events; print advertising in trade magazines and other
business publications; client referrals; and CoStar Today TM , LoopNews TM and other company newsletters distributed via email to our clients and prospects. In
2017, we integrated the CoStar and LoopNet databases in order to enhance CoStar information services as information tools and LoopNet marketplace services as
marketing tools. This integration provides clients the ability to enter listings into our Listing Manager tool, and to subsequently update their listings in CoStar and
LoopNet simultaneously. To familiarize clients with the integration and benefits of the tool, we provided video tutorials and hosted numerous webinars, in addition
to web-based marketing and direct marketing efforts. In 2018, over one hundred thousand commercial real estate professionals and other users successfully made
millions of updates to their listings using Listing Manager.

To  generate  brand  awareness  and  site  traffic  for  the  Apartments.com  network  of  rental  websites,  we  utilize  a  multi-channel  marketing  campaign  featuring
television  and  radio  ads,  online  and  digital  advertising  impressions,  social  media,  public  relations,  out-of-home  and  paid  search  marketing,  all  of  which  are
reinforced with Search Engine Marketing efforts. We plan to continue to utilize these marketing methods and will continue to work to determine the optimal level
of marketing investment for our services for future periods.

Web-based  marketing  and  direct  marketing  are  effective  means  for  us  to  find  prospective  clients.  Our  web-based  marketing  efforts  include  search  engine
optimization, paid advertising with major search engines, social media and display advertising on commercial real estate news and business websites and mobile
applications,  and  our  direct  marketing  efforts  include  television,  radio,  out-of-home  ads,  direct  mail,  email  and  telemarketing,  and,  when  applicable,  make
extensive use of our unique, proprietary database. Once we have identified a prospective client, our most effective sales method is a service demonstration. We use
various forms of advertising to build brand identity and reinforce the value and benefits of our services. We also sponsor and attend local association activities and
events, including industry-leading events for commercial real estate brokers, owner/investors and retail and financial services institutions, and attend and/or exhibit
at industry trade shows and conferences to reinforce our relationships with our core user groups.

News  has  always  been  a  valuable  part  of  CoStar's  core  subscription  offering.  CoStar's  news  teams  report  on  the  latest  deals  and  developments  across  our
markets, keeping subscribers informed and driving higher usage in our core product. In 2018, we hired veteran journalists to guide our news efforts and expanded
our team to deliver more robust coverage. We launched a daily newsletter for U.S. subscribers and delivered curated content to our largest markets. We plan to
offer  even  more  personalized  information  in  2019.  In  2018,  we  also  upgraded  our  technology  to  make  our  service  more  relevant  for  subscribers,  giving  us  the
capability to deliver specific news based on their individual preferences.

We believe the ability to customize and personalize news for the user's specific interests should make our news service even more relevant and valuable to
subscribers. In addition to encouraging more engagement through logins and time on site, we believe a more robust news operation will also provide more options
and formats for advertising to the commercial real estate audience.

We  currently  offer  dozens  of  webinars  each  year  aimed  at  helping  customers  learn  more  about  the  commercial  real  estate  industry  and  how  to  use  our
services.  The  webinars  are  available  both  as  live  presentations  and  as  on-demand  programs  hosted  on  our  website.  On  a  monthly  basis,  we  issue  the  CoStar
Commercial  Repeat  Sales  Index  ("CCRSI"),  a  comprehensive  set  of  benchmarks  that  investors  and  other  market  participants  can  use  to  better  understand
commercial real estate price movements. CCRSI is produced using our underlying data and is publicly distributed by CoStar through the news media and made
available online.

Our sales and marketing efforts have focused and will continue to focus on cross-selling and marketing our services. We continue to develop and cross-sell the
services  offered  by  our  Apartments.com  network  of  rental  websites  and  the  other  services  we  offer,  including,  but  not  limited  to  CoStar  Suite.  We  will  also
continue to focus on identifying opportunities for customers to benefit from CoStar's Real Estate Manager offering.

Competition

The  market  for  information,  analytics  and  online  marketplaces  generally  is  competitive  and  rapidly  changing.  In  the  commercial  real  estate  and  apartment

rentals industries, we believe the principal competitive factors affecting these services and providers are:

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•
•
•
•
•
•
•
•
•
•
•
•
•
•

quality and depth of the underlying databases;
ease of use, flexibility and functionality of the software;
intuitiveness and appeal of the user interface;
timeliness of the data, including listings;
breadth of geographic coverage and services offered;
completeness and accuracy of content;
client service and support;
perception that the service offered is the industry standard;
price;
effectiveness of marketing and sales efforts;
proprietary nature of methodologies, databases and technical resources;
vendor reputation;
brand loyalty among customers; and
capital resources.

We compete directly and indirectly for customers with the following categories of companies:

•

•

•

•

•

•

•

•

online marketing services, websites or data exchanges targeted to commercial real estate brokers, buyers and sellers of commercial real estate properties,
insurance  companies,  mortgage  brokers  and  lenders,  such  as  Reed  Business  Information  Limited  and  its  Estates  Gazette  and  Radius  Data  Exchange
products,  RealMassive,  officespace.com,  42floors,  RealNex  MarketPlace,  TenantWise,  www.propertyshark.com,  Rofo,  BuildingSearch.com,  CIMLS,
CompStak, Rightmove, CommercialCafe, CREXi, Truss, TotalCommercial.com and DebtX;

publishers and distributors of information, analytics and marketing services, including regional providers and national print publications, such as CBRE
Economic Advisors, Marshall & Swift, Yale Robbins, REIS Network (part of the Moody's Analytics Accelerator), Real Capital Analytics, Real Capital
Markets, Reonomy, The Smith Guide, Yardi Matrix, RealPage and its Axiometrics business and ReScour, Inc.;

Internet listing services featuring apartments for rent, such as ApartmentGuide.com, Rent.com, Rentals.com, Zillow Rentals, Trulia Rentals, StreetEasy,
NakedApartments.com, HotPads.com, MyNewPlace.com, Zumper, PadMapper, Craigslist, ApartmentList.com, Move.com, Realtor.com, Adobo, RadPad,
RentJungle and RentCafe.com;

locally controlled real estate boards, exchanges or associations sponsoring property listing services and the companies with whom they partner, such as
Catylist, the National Association of Realtors, CCIM Institute, Society of Industrial and Office Realtors, the Commercial Association of Realtors Data
Services and AIR CRE;

real estate portfolio management software solutions, such as Cougar Software, MRI Software, Altus, Intuit and SiteCompli;

real estate lease management and administration software solutions, such as Accruent, Tririga, Manhattan Software, Lucemex and AMT;

in-house research departments operated by commercial real estate brokers; and

public record providers.

As the market for information, analytics and online marketplaces develops, additional competitors (including companies which could have greater access to
data, financial, product development, technical, analytic or marketing resources than we do) may enter the market and competition may intensify. For example, a
company like Bloomberg L.P. has the resources, and has previously announced an intention, to move into the commercial real estate information business. Further,
a  company  like  Google,  which  has  a  far-reaching  web  presence  and  substantial  data  aggregation  capabilities,  could  enter  the  commercial  real  estate  marketing
arena. A company like Zillow, which already has a presence in residential real estate and the apartment rentals industry, could use its resources to further expand in
the  online  apartment  rentals  industry  creating  greater  competition  among  Internet  listing  services  for  the  marketing  budgets  of  property  managers  and  property
owners. While we believe that we have successfully differentiated ourselves from existing competitors, current or future competitors could materially harm our
business.

14

Proprietary Rights

To protect our proprietary rights in our methodologies, database, software, trademarks and other intellectual property, we depend upon a combination of:

•
•
•
•
•
•

trade secret, misappropriation, unfair competition, copyright, trademark, computer fraud, database protection and other laws;
registration of copyrights and trademarks;
nondisclosure, noncompetition and other contractual provisions with employees and consultants;
license agreements with customers;
patent protection; and
technical measures.

We seek to protect our software’s source code, our database and our photography as trade secrets and under copyright law. Although copyright registration is
not a prerequisite for copyright protection, we have filed for copyright registration for many of our databases, photographs, software and other materials. Under
current U.S. copyright law, the arrangement and selection of data may be protected, but the actual data itself may not be. Certain U.K. database protection laws
provide  additional  protections  for  our  U.K.  databases.  We  license  our  services  under  license  agreements  that  grant  our  clients  non-exclusive,  non-transferable
rights.  These  agreements  restrict  the  disclosure  and  use  of  our  information  and  prohibit  the  unauthorized  reproduction  or  transfer  of  any  of  our  proprietary
information, methodologies or analytics.

We also attempt to protect our proprietary databases, our trade secrets and our proprietary information through confidentiality and noncompetition agreements
with  our  employees  and  consultants.  Our  services  also  include  technical  measures  designed  to  detect,  discourage  and  prevent  unauthorized  access  to  and/or
copying  of  our  intellectual  property.  We  have  established  an  internal  antipiracy  team  that  uses  fraud-detection  technology  to  continually  monitor  use  of  our
services to detect and prevent unauthorized access, and we actively prosecute individuals and firms that engage in this unlawful activity.

We maintain U.S. and international trademark registrations for CoStar’s core service names and proactively file U.S. and international trademark applications
covering  our  new  and  planned  service  names.  Our  federally  registered  trademarks  include  CoStar®,  CoStar  Property®,  CoStar  COMPS  Professional®,  CoStar
Tenant®, CoStar Go, CoStar Lease Analysis®, CoStar Showcase® and LoopNet®, among many others. In the U.S., trademarks are generally valid as long as they
are in use and have not been found to be generic. We consider our trademarks in the aggregate to constitute a valuable asset. In addition, we maintain a patent
portfolio that protects certain of our systems and methodologies. We currently have one granted patent in the U.K., which expires in 2021, covering, among other
things,  certain  of  our  field  research  methodologies,  two  patents  in  Canada,  which  expire  in  2021,  covering,  among  other  things,  certain  features  of  our  field
research  methodologies,  and  twelve  patents  in  the  U.S.  which  expire  in  2020,  2021  (2  patents),  2022  (2  patents),  2025,  2032,  2036,  and  2037  (4  patents),
respectively, covering, among other things, certain features of our field research technology and mapping tools. We regard the rights protected by our patents as
valuable to our business, but do not believe that our business is materially dependent on any single patent or on our portfolio of patents as a whole.

Employees

As of January 31, 2019 , we employed 3,705 employees. None of our employees are represented by a labor union. We have experienced no work stoppages.
We believe that our employee relations are excellent. In common with many German companies, employees in our German subsidiary, Thomas Daily GmbH, have
elected five fellow employees to form a Works Council, which represents our employees at the location and has certain rights to receive information from us and
engage us in discussions under applicable law.

Available Information

Our  investor  relations  Internet  website  is  http://www.costargroup.com/investors.  The  reports  we  file  with  or  furnish  to  the  Securities  and  Exchange
Commission, including our annual report, quarterly reports and current reports, as well as amendments to those reports, are available free of charge on our Internet
website as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission. The Securities
and  Exchange  Commission  maintains  an  Internet  site  that  contains  reports,  proxy  and  information  statements,  and  other  information  regarding  issuers  that  file
electronically with the Commission at http://www.sec.gov.

15

Item 1A.

Risk Factors

Cautionary Statement Concerning Forward-Looking Statements

We have made forward-looking statements in this Report and make forward-looking statements in our press releases and conference calls that are subject to
risks and uncertainties. Forward-looking statements include information that is not purely historic fact and include, without limitation, statements concerning our
financial outlook for 2019 and beyond, our possible or assumed future results of operations generally, and other statements and information regarding assumptions
about  our  revenues,  revenue  growth  rates,  gross  margin  percentage,  net  income,  net  income  per  share,  fully  diluted  net  income  per  share,  EBITDA,  adjusted
EBITDA,  non-generally  accepted  accounting  principles  (“GAAP”)  net  income,  non-GAAP  net  income  per  share,  weighted-average  outstanding  shares,  taxable
income (loss), cash flow from operating activities, available cash, operating costs, amortization expense, intangible asset recovery, capital and other expenditures,
legal proceedings and claims, legal costs, effective tax rate, equity compensation charges, future taxable income, pending acquisitions, the anticipated benefits of
completed  or  proposed  acquisitions,  the  anticipated  timing  of  acquisition  closings,  the  anticipated  benefits  of  cross-selling  efforts,  product  development  and
release, planned product enhancements, sales and marketing campaigns, product integrations, elimination and de-emphasizing of services, contract renewal rate,
the timing of future payments of principal under our $750 million credit facility available to us under the amended and restated credit agreement dated October 19,
2017  (the  “2017  Credit  Agreement”),  expectations  regarding  our  compliance  with  financial  and  restrictive  covenants  in  the  2017  Credit  Agreement,  financing
plans, geographic expansion, capital structure, contractual obligations, our database, database growth, services and facilities, employee relations, future economic
performance, our ability to liquidate or realize our long-term investments, management’s plans, goals and objectives for future operations and growth and markets
for  our  stock.  Sections  of  this  Report  which  contain  forward-looking  statements  include  “Business,”  “Risk  Factors,”  “Properties,”  “Legal  Proceedings,”
“Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations,”  “Quantitative  and  Qualitative  Disclosures  About  Market  Risk,”
“Controls and Procedures” and the Financial Statements and related Notes.

Our  forward-looking  statements  are  also  identified  by  words  such  as  “hope,”  “anticipate,”  “may,”  “believe,”  “expect,”  “intend,”  “will,”  “should,”  “plan,”
“estimate,”  “predict,”  “continue”  and  “potential”  or  the  negative  of  these  terms  or  other  comparable  terminology.  You  should  understand  that  these  forward-
looking  statements  are  estimates  reflecting  our  judgment,  beliefs  and  expectations,  not  guarantees  of  future  performance.  They  are  subject  to  a  number  of
assumptions,  risks  and  uncertainties  that  could  cause  actual  results  to  differ  materially  from  those  expressed  or  implied  in  the  forward-looking  statements.  The
following important factors, in addition to those discussed or referred to under the heading “Risk Factors,” and other unforeseen events or circumstances, could
affect our future results and could cause those results or other outcomes to differ materially from those expressed or implied in our forward-looking statements:
commercial real estate market conditions; general economic conditions, both domestic and international; our ability to identify, acquire and integrate acquisition
candidates; our ability to realize the expected benefits, cost savings or other synergies from acquisitions, including ForRent, Realla and Cozy, on a timely basis or
at  all;  our  ability  to  combine  acquired  businesses  successfully  or  in  a  timely  and  cost-efficient  manner;  business  disruption  relating  to  integration  of  acquired
businesses  or  other  business  initiatives;  business  disruption  relating  to  acquisitions  may  be  greater  than  expected;  our  ability  to  transition  acquired  service
platforms  to  our  model  in  a  timely  manner  or  at  all;  changes  and  developments  in  business  plans;  theft  of  any  personally  identifiable  information  we,  or  the
businesses  that  we  acquire,  maintain  or  process;  any  actual  or  perceived  failure  to  comply  with  privacy  or  data  protection  laws,  regulations  or  standards;  the
amount of investment for sales and marketing and our ability to realize a return on investments in sales and marketing; our ability to effectively and strategically
combine, eliminate or de-emphasize service offerings; reductions in revenues as a result of service changes; the time and resources required to develop upgraded or
new services and to expand service offerings; changes or consolidations within the commercial real estate industry; customer retention; our ability to attract new
clients;  our  ability  to  sell  additional  services  to  existing  clients;  our  ability  to  integrate  our  North  America  and  International  product  offerings;  our  ability  to
successfully introduce and cross-sell new products or upgraded services in U.S. and foreign markets; our ability to attract consumers to our online marketplaces;
our ability to increase traffic on our network of sites; the success of our marketing campaigns in generating brand awareness and site traffic; competition; foreign
currency fluctuations; global credit market conditions affecting investments; our ability to continue to expand successfully, timely and in a cost-efficient manner,
including internationally; our ability to effectively penetrate and gain acceptance in new sectors and geographies; our ability to control costs; our ability to continue
to develop and maintain our research operations headquarters in Richmond, Virginia as a technology innovation hub; litigation or government investigations in
which we become involved; changes in accounting policies or practices; release of new and upgraded services or entry into new markets by us or our competitors;
data quality; expansion, growth, development or reorganization of our sales force; employee retention; technical problems with our services; managerial execution;
changes  in  relationships  with  real  estate  brokers,  property  managers  and  other  strategic  partners;  legal  and  regulatory  issues;  and  successful  adoption  of  and
training on our services.

Accordingly, you should not place undue reliance on forward-looking statements, which speak only as of, and are based on information available to us on, the
date of this Report. All subsequent written and oral forward-looking statements attributable to us or any person acting on our behalf are expressly qualified in their
entirety by the cautionary statements contained or referred

16

to in this section. We do not undertake any obligation to update any such statements or release publicly any revisions to these forward-looking statements to reflect
new information or events or circumstances after the date of this Report or to reflect the occurrence of unanticipated events.

Risk Factors

Our
revenues
and
financial
position
will
be
adversely
affected
if
we
are
not
able
to
attract
and
retain
clients
. Our success and revenues depend on attracting
and retaining subscribers to our information, analytics and online marketplaces. Our subscription-based information, analytics and online marketplaces generate the
largest  portion  of  our  revenues.  However,  we  may  be  unable  to  attract  new  clients,  and  our  existing  clients  may  decide  not  to  add,  not  to  renew  or  to  cancel
subscription  services.  In  addition,  in  order  to  increase  our  revenue,  we  must  continue  to  attract  new  customers,  continue  to  keep  our  cancellation  rate  low  and
continue to sell new services to our existing customers. We may not be able to continue to grow our customer base, keep the cancellation rate for customers and
services low or sell new services to existing customers as a result of several factors, including without limitation: economic pressures; the business failure of a
current client or clients; a decision that customers have no need for our services; a decision to use alternative services; customers’ and potential customers’ pricing
and  budgetary  constraints;  consolidation  in  the  real  estate  and/or  financial  services  industries;  data  quality;  technical  problems;  or  competitive  pressures.  We
compete  against  many  other  commercial  real  estate  information,  analytics,  and  marketing  service  providers  for  business,  including  competitors  that  offer  their
services through rapidly changing methods of delivering real estate information. If clients cancel services or decide not to renew their subscription agreements, and
we do not sell new services to our existing clients or attract new clients, then our renewal rate, net new sales and revenues may decline or fail to meet expectations.

We
may
not
be
able
to
successfully
introduce
new
or
upgraded
information,
analytics
and
online
marketplace
services
or
combine
or
shift
focus
from
services
with
less
demand,
which
could
decrease
our
revenues
and
our
profitability
. Our future business and financial success will depend on our ability to continue to
anticipate  the needs of customers and potential customers, and to successfully introduce new and upgraded services into the marketplace.  To be successful, we
must adapt to changes in the industry, as well as rapid technological changes by continually enhancing our information, analytics and online marketplace services.
Developing new services and upgrades to services, as well as integrating and coordinating current services, imposes heavy burdens on our systems department,
product  development  team,  management  and  researchers.  The  processes  are  costly,  and  our  efforts  to  develop,  integrate  and  enhance  our  services  may  not  be
successful. As we continue to combine our operations with those that we have acquired, we must continue to assess the purposes for which various services may be
used alone or together, and how we can best address those uses through stand-alone services or combinations of coordinating applications. In addition, successfully
launching and selling a new or upgraded service puts additional strain on our sales and marketing resources. If we are unsuccessful in obtaining greater market
share, we may not be able to offset the expenses associated with the launch and marketing of the new or upgraded service, which could have a material adverse
effect on our financial results. For example, to generate brand awareness and site traffic for our Apartments.com network of rental websites, we utilize a multi-
channel marketing campaign. If the marketing campaign does not continue to increase brand awareness, site traffic and/or revenues, it could have an adverse effect
on our financial results.

If  we  are  unable  to  develop  new  or  upgraded  services  or  decide  to  combine,  shift  focus  from,  or  phase  out  a  service,  then  our  customers  may  choose  a
competitive  service  over ours and our revenues may decline  and our profitability  may be reduced. If we incur significant  costs in developing new or upgraded
services or combining and coordinating existing services, if we are not successful in marketing and selling these new services or upgrades, or if our customers fail
to  accept  these  new  or  combined  and  coordinating  services,  then  there  could  be  a  material  adverse  effect  on  our  results  of  operations  due  to  a  decrease  of  our
revenues and a reduction of our profitability. In addition, as we integrate acquired businesses, we continue to assess which services we believe will best meet the
needs of our customers. If we eliminate or phase out a service and are not able to offer and successfully market and sell an alternative service, our revenue may
decrease, which could have a material adverse effect on our results of operations.

A
downturn
or
consolidation
in
the
commercial
real
estate
industry
may
decrease
customer
demand
for
our
services
. The commercial real estate market may
be adversely impacted by many different factors, including lower than expected job growth or job losses resulting in reduced real estate demand; rising interest
rates and slowing transaction volumes that negatively impact investment returns; excessive speculative new construction in localized markets resulting in increased
vacancy  rates  and  diminished  rent  growth;  and  unanticipated  disasters  and  other  adverse  events  such  as  slowing  of  the  growth  in  the  working  age  population
resulting in reduced demand for all types of real estate. A reversal of improvements in the commercial real estate industry’s leasing activity and absorption rates or
a downturn in the commercial real estate market may affect our ability to generate revenues and may lead to more cancellations by our current or future customers,
either  of  which  could  cause  our  revenues  or  our  revenue  growth  rate  to  decline  and  reduce  our  profitability.  A  depressed  commercial  real  estate  market  has  a
negative impact on our core customer base, which could decrease demand for our information, analytics and online marketplaces. Also, companies in this industry
may consolidate, often in order to reduce expenses. Consolidation, or other cost-cutting measures by our customers, may lead to

17

 
cancellations  of  our  information,  analytics  and  online  marketplace  services  by  our  customers,  reduce  the  number  of  our  existing  clients,  reduce  the  size  of  our
target market or increase our clients’ bargaining power, all of which could cause our revenues to decline and reduce our profitability. If cancellations, reductions of
services, and failures to pay increase, and we are unable to offset the resulting decrease in revenues by increasing sales to new or existing customers, our revenues
may decline or grow at lower rates.

Negative 
general 
economic 
conditions 
could 
increase 
our 
expenses 
and 
reduce 
our 
revenues
 .  Our  business  and  the  commercial  real  estate  industry  are
particularly affected by negative trends in the general economy. The success of our business depends on a number of factors relating to general global, national,
regional and local economic conditions, including perceived and actual economic conditions, recessions, inflation, deflation, exchange rates, interest rates, taxation
policies,  availability  of  credit,  employment  levels,  and  wage  and  salary  levels.  Negative  general  economic  conditions  could  adversely  affect  our  business  by
reducing  our  revenues  and  profitability.  If  we  experience  greater  cancellations  or  reductions  of  services  and  failures  to  timely  pay,  and  we  do  not  acquire  new
clients or sell new services to our existing clients, our revenues may decline and our financial position would be adversely affected.  Adverse national and global
economic events, as well as any significant terrorist attack, are likely to have a dampening effect on the economy in general, which could negatively affect our
financial  performance  and  our  stock  price.  Further  actions  or  inactions  of  the  U.S.  or  other  major  national  governments,  including  "Brexit",  may  also  impact
economic conditions, which could result in financial market disruptions or an economic downtown. Market disruptions may also contribute to extreme price and
volume fluctuations in the stock market that may affect our stock price for reasons unrelated to our operating performance. In addition, a significant increase in
inflation  could  increase  our  expenses  more  rapidly  than  expected,  the  effect  of  which  may  not  be  offset  by  corresponding  increases  in  revenue.  Conversely,
deflation  resulting  in  a  decline  of  prices  could  reduce  our  revenues.  In  the  current  economic  environment,  it  is  difficult  to  predict  whether  we  will  experience
significant inflation or deflation in the near future. A significant increase in either could have an adverse effect on our results of operations. See the risk factor
below titled “The economic effects of “Brexit” may affect relationships with existing and future customers and could have an adverse impact on our business and
operating results” for further discussion of risks related to Brexit .

If
we
are
unable
to
hire
qualified
persons
for,
or
retain
and
continue
to
develop,
our
sales
force,
or
if
our
sales
force
is
unproductive,
our
revenues
could
be
adversely
affected.
In order to support revenues and future revenue growth, we need to continue to develop, train and retain our sales force. Our ability to build and
develop  a  strong  sales  force  may  be  affected  by  a  number  of  factors,  including:  our  ability  to  attract,  integrate  and  motivate  sales  personnel;  our  ability  to
effectively  train  our  sales  force;  the  ability  of  our  sales  force  to  sell  an  increased  number  and  different  types  of  services;  our  ability  to  manage  effectively  an
outbound  telesales  group;  the  length  of  time  it  takes  new  sales  personnel  to  become  productive;  the  competition  we  face  from  other  companies  in  hiring  and
retaining sales personnel; our ability to effectively  structure our sales force; and our ability to effectively  manage a multi-location  sales organization, including
field sales personnel. If we are unable to hire qualified sales personnel and develop and retain the members of our sales force, including sales force management, or
if our sales force is unproductive, our revenues or growth rate could decline and our expenses could increase.

We 
may 
not 
be 
able 
to 
compete 
successfully 
against 
existing 
or 
future 
competitors 
in 
attracting 
advertisers, 
which 
could 
harm 
our 
business, 
results 
of
operations
and
financial
condition.
We compete to attract advertisers. Our competition for advertisers may have significant brand recognition as well as greater
numbers  of  direct  sales  personnel  than  we  have  and  may  generate  more  web  traffic  than  we  do,  which  may  provide  a  competitive  advantage.  To  compete
successfully for advertisers against future and existing competitors, we must continue to invest resources in developing our advertising platform and proving the
effectiveness and relevance of our advertising services. Pressure from competitors seeking to acquire a greater share of our advertisers’ overall marketing budget
could  adversely  affect  our  pricing  and  margins,  lower  our  revenue,  and  increase  our  research  and  development  and  marketing  expenses.  If  we  are  unable  to
compete successfully against our existing or future competitors, our business, results of operations or financial condition could be adversely affected.

We
may
be
unable
to
increase
awareness
of
our
brands,
including
CoStar,
LoopNet,
Apartments.com,
BizBuySell
and
LandsofAmerica,
which
could
adversely
affect
our
business.
We rely heavily on our brands, which we believe are key assets of our company. Awareness and differentiation of our brands are important for
attracting and expanding the number of users of, and subscribers to, our online marketplaces, such as LoopNet, the Apartments.com network of rental websites,
CoStar Showcase, and the Land.com network of rural lands for sale. We expect to continue to invest in sales and marketing as we seek to grow the numbers of
subscribers  to,  and  advertisers  on,  our  marketplaces.  Our  methods  of  advertising  may  not  be  successful  in  increasing  brand  awareness  or,  ultimately,  be  cost-
effective. If we are unable to maintain or enhance user and advertiser awareness of our brands, or if we are unable to recover our marketing and advertising costs
through increased usage of our services and increased advertising on our websites, our business, results of operations and financial condition could be adversely
affected.

We
rely
on
Internet
search
engines
to
drive
traffic
to
our
websites.
If
search
results
do
not
feature
our
websites
prominently,
traffic
to
our
websites
would
decrease 
and 
our 
business 
could 
be 
adversely 
affected.
 Google,  Bing,  Yahoo!  and  other  Internet  search  websites  drive  traffic  to  our  websites,  including
CoStar.com, the Apartments.com network of rental websites, LoopNet.com,

18

BizBuySell.com and the Land.com network of land for sale websites. For example, when a user types an apartment building address into an Internet search engine,
organic search ranking of our Apartments.com webpages will determine how prominently such webpages are displayed in the search results. However, our ability
to maintain high organic search result rankings is not entirely within our control. Our competitors’ search engine optimization, or SEO, efforts may result in their
websites receiving a higher search result page ranking than the rankings our websites receive, or Internet search engines could revise their methodologies in a way
that would adversely affect our search result rankings, each of which could slow the growth of our user base. Further, search engine providers could align with our
competitors, which could adversely affect traffic to our websites. Our websites have experienced fluctuations in search result rankings in the past, and we anticipate
similar  fluctuations  in  the  future.  If  we  experience  a  material  reduction  in  the  number  of  users  directed  to  our  websites  through  Internet  search  engines,  our
business, results of operations and financial condition could be adversely affected.

If
we
are
unable
to
maintain
or
increase
traffic
to
our
marketplaces,
our
business
and
operating
results
could
be
adversely
affected.
Our ability to generate
revenues  from  our  marketplace  businesses  depends,  in  part,  on  our  ability  to  attract  users  to  our  websites.  If  we  fail  to  maintain  or  increase  traffic  to  our
marketplaces,  our  ability  to  acquire  additional  subscribers  or  advertisers  and  deliver  leads  to  and  retain  existing  subscribers  and  advertisers  could  be  adversely
affected. Our marketing expenses may increase in connection with our efforts to maintain or increase traffic to our websites. Our efforts to maintain or generate
additional traffic to our marketplaces may not be successful. Even if we are able to attract additional users, increases in our operating expenses could negatively
impact our operating results if we are unable to generate more revenues through increased sales of subscriptions to our marketplace products. We face competition
to attract users to our marketplace websites. Our existing and potential competitors include companies that could devote greater technical and other resources than
we have available to provide services that users might view as superior to our offerings. Any of our future or existing competitors may introduce different solutions
that attract users away from our services or provide solutions similar to our own that have the advantage of better branding or marketing resources. If we are unable
to increase traffic to our marketplaces, or if we are unable to generate enough additional revenues to offset increases in expenses related to increasing traffic to our
marketplaces, our business and operating results could be adversely affected.

If 
real 
estate 
professionals 
or 
other 
advertisers 
reduce 
or 
cancel 
their 
advertising 
spending 
with 
us 
and 
we 
are 
unable 
to 
attract 
new 
advertisers, 
our
operating
results
would
be
harmed.
Our marketplace businesses, including LoopNet, the Apartments.com network of rental websites, CoStar Showcase, and the
Land.com  network  of  rural  lands  for  sale,  depend  on  advertising  revenues  generated  primarily  through  sales  to  persons  in  the  real  estate  industry,  including
property  managers  and  owners  and  other  advertisers.  Our  ability  to  attract  and  retain  advertisers,  and  ultimately  to  generate  advertising  revenue,  depends  on  a
number of factors, including:

•
•
•
•
•

increasing the number of unique visitors to, and users of, our websites and mobile applications;
the quantity and quality of the leads that we provide to our advertisers;
the success of any marketing and product development efforts directed at attracting additional users and advertisers to our marketplaces;
keeping pace with changes in technology and with our competitors; and
offering an attractive return on investment to our advertisers for their advertising dollars spent with us.

Further,  with  respect  to  the  Apartments.com  network  of  rental  websites,  our  ability  to  attract  and  retain  advertisers  also  depends  on  the  current  apartment

rental market and apartment vacancy rates. If vacancy rates are too high or too low, advertisers may not need to utilize our marketplace services.

Many of the advertisers who advertise on our marketplaces do not have long-term contracts. These advertisers could choose to modify or discontinue their
relationships  with  us  with  little  or  no  advance  notice.  In  addition,  as  existing  subscriptions  for  advertising  expire,  we  may  not  be  successful  in  renewing  these
subscriptions or securing new subscriptions. We may not succeed in retaining existing advertisers’ spending or capturing a greater share of such spending if we are
unable  to  convince  advertisers  of  the  effectiveness  of  our  services  as  compared  to  alternatives.  In  addition,  future  changes  to  our  pricing  methodology  for
advertising services may cause advertisers to reduce or discontinue their advertising with us. If current advertisers reduce or end their advertising spending with us
and we are unable to attract new advertisers, our advertising revenues and business, results of operations and financial condition could be adversely affected.

If 
we 
do 
not 
invest 
in 
product 
development 
and 
provide 
services 
that 
are 
attractive 
to 
our 
users 
and 
to 
our 
advertisers, 
our 
business 
could 
be 
adversely
affected.
Our success depends on our continued improvements to provide services that make our marketplaces useful for users and attractive to our advertisers. As
a  result,  we  must  continually  invest  resources  in  research  and  development  to  improve  the  appeal  and  comprehensiveness  of  our  services  and  effectively
incorporate new technologies. If we are unable to provide services that users want to use, then users may become dissatisfied and use competitors’ websites. If we
are

19

unable to continue offering innovative services, we may be unable to attract additional users and advertisers or retain our current users and advertisers, which could
harm our business, results of operations and financial condition.

If
we
are
not
able
to
successfully
identify,
finance,
integrate
and/or
manage
costs
related
to
acquisitions,
our
business
operations
and
financial
position
could
be
adversely
affected
. We have expanded our markets and services in part through acquisitions of complementary businesses, services, databases and technologies,
and expect to continue to do so in the future. Our strategy to acquire complementary companies or assets depends on our ability to identify, and the availability of,
suitable  acquisition  candidates.  We  may  incur  costs  in  connection  with  an  acquisition,  but  may  ultimately  be  unable  or  unwilling  to  consummate  the  proposed
transaction  for  various  reasons.  In  addition,  acquisitions  involve  numerous  risks,  including  the  ability  to  realize  or  capitalize  on  synergies  created  through
combinations; managing the integration of personnel and products or services; managing the integration of acquired infrastructure and controls; potential increases
in operating costs; managing geographically remote operations; the diversion of management’s attention from other business concerns and potential disruptions in
ongoing operations during integration; the inherent risks in entering markets and sectors in which we have either limited or no direct experience; and the potential
loss of key employees, clients or vendors and other business partners of the acquired companies. We may not successfully integrate acquired businesses or assets
and may not achieve anticipated benefits of an acquisition, including expected synergies. For example, we may be unable to fully integrate Cozy technology into
the Apartments.com platform when and as expected or fully utilize and realize the benefits of Realla's expertise in capturing listings data to facilitate our expansion
strategy in other European markets.

We have incurred severance costs and expect to incur additional costs to integrate prior acquisitions, such as IT integration expenses and costs related to the
renegotiation  of  redundant  vendor  agreements.  Costs  in  connection  with  acquisitions  and  integrations  may  be  higher  than  expected,  and  we  may  also  incur
unanticipated acquisition-related costs. These costs could adversely affect our financial condition, results of operation or prospects of the combined business.

External factors, such as compliance with laws and regulations, and shifting market preferences, may also impact the successful integration of an acquired
business. An acquired business could strain our system of internal controls and diminish its effectiveness. Acquisitions could result in dilutive issuances of equity
securities, the incurrence of debt, one-time write-offs of goodwill and substantial amortization  expenses of other intangible assets. We may be unable to obtain
financing on favorable terms, or at all, if necessary to finance future acquisitions, making it impossible or more costly to complete future acquisitions. If we are
able to obtain financing, the terms may be onerous and restrict our operations. Further, certain acquisitions may be subject to regulatory approval, which can be
time consuming and costly to obtain or may be denied, and if obtained, the terms of such regulatory approvals may impose limitations on our ongoing operations or
require us to divest assets or lines of business.

Our
actual
or
perceived
failure
to
comply
with
privacy
laws
and
standards
could
adversely
affect
our
business,
financial
condition
and
results
of
operations
.
We  depend  on  information  technology  networks  and  systems  to  process,  transmit  and  store  electronic  information  and  to  communicate  between  our  locations
around  the  world  and  with  our  clients  and  vendors.  We  collect,  use  and  disclose  personally  identifiable  information,  including  among  other  things  names,
addresses,  phone  numbers  and  email  addresses.  We  collect,  store  and  use  biometric  data  and  sensitive  or  confidential  transaction  and  account  information.  In
addition,  we collect  personal  information  from  tenants  and  landlords,  including  social  security  numbers,  state  or  federal  issued identification  numbers,  dates  of
birth, financial information and documents, employment information, background checks and credit scores, to facilitate the apartment rental application process
between a renter and property manager. As a result, we are subject to a variety of state, national, and international laws and regulations that apply to the collection,
use,  retention,  protection,  disclosure,  transfer  and  other  processing  of  personal  data,  including  the  Fair  Credit  Reporting  Act.  Laws  and  regulations  related  to
privacy  and  data  protection  are  evolving,  with  new  or  modified  laws  and  regulations  proposed  and  implemented  frequently  and  existing  laws  and  regulations
subject  to  new  or  different  interpretations.  For  example,  in  2016,  the  EU  formally  adopted  the  General  Data  Protection  Regulation,  or  GDPR,  which  was
implemented  in  all  EU  member  states  effective  May  25,  2018  and  replaced  the  EU  Data  Protection  Directive.  The  GDPR  introduced  new  data  protection
requirements in the EU and imposes substantial fines for breaches of the data protection rules. The GDPR increased our responsibility and liability in relation to
personal data that we process. We continue to assess our compliance with GDPR in light of guidance from data protection authorities, evolving best practices and
evolving regulations and we may need to put in place additional mechanisms to ensure compliance with the new EU data protection rules. Any failure to comply
with the rules arising from the EU Data Protection Directive, the GDPR, and related national laws of EU member states, could lead to government enforcement
actions and significant penalties against us, and could adversely affect our business, financial condition, cash flows and results of operations. Compliance with any
of the foregoing laws and regulations can be costly and can delay or impede the development of new products. We may incur substantial fines if we violate any
laws or regulations relating to the collection or use of personal information.

Our  actual  or  alleged  failure  to  comply  with  applicable  privacy  or  data  security  laws,  regulations  and  policies,  or  to  protect  personal  data,  could  result  in

enforcement actions and significant penalties against us, which could result in negative publicity,

20

increase our operating costs, subject us to claims or other remedies and have a material adverse effect on our business, financial condition and results of operations.

Because the interpretation and application of many privacy and data protection laws are uncertain, it is possible that these laws may be interpreted and applied
in a manner that is inconsistent with our existing data management practices or the features of our products. If so, in addition to the possibility of fines, lawsuits
and other claims and penalties, we could be required to fundamentally change our business activities and practices or modify our products, which could harm our
business.

We expect that there will continue to be new proposed laws, regulations and industry standards concerning privacy, data protection and information security in
the United States and other jurisdictions, and we cannot determine the impact such future laws, regulations and standards may have on our business. Our policies
concerning  the  collection,  use  and  disclosure  of  personally  identifiable  information  are  described  on  our  websites.  While  we  believe  that  our  policies  are
appropriate and that we are in compliance with our policies, we could be subject to legal claims, government action, harm to our reputation or incur significant
remediation costs if we experience a security breach or our practices fail, or are seen as failing, to comply with our policies or with applicable laws concerning
personally identifiable information.

Concern regarding our use of the personal information collected on our websites or collected when performing our services could keep prospective customers
from subscribing to our services. Industry-wide incidents or incidents with respect to our websites, including misappropriation of third-party information, security
breaches or changes in industry standards, regulations or laws, could deter people from using the Internet or our websites to conduct transactions that involve the
transmission of confidential information, which could harm our business.

Cyberattacks 
and 
security 
vulnerabilities 
could 
result 
in 
serious 
harm 
to 
our 
reputation, 
business, 
and 
financial 
condition.
 As  stated  above,  our  business
involves the collection, storage, processing and transmission of customers’ personal data. We also collect, store and process employee personal data. An increasing
number of organizations, including large merchants, businesses, technology companies and financial institutions, as well as government institutions, have disclosed
breaches  of  their  information  security  systems,  some  of  which  have  involved  sophisticated  and  highly  targeted  attacks,  including  on  their  websites,  mobile
applications, and infrastructure.

The techniques used to obtain unauthorized, improper or illegal access to a target's systems, data or customers' data, disable or degrade services, or sabotage
systems  are  constantly  evolving  and  have  become  increasingly  complex  and  sophisticated,  may  be  difficult  to  detect  quickly  and  often  are  not  recognized  or
detected until after they have been launched against a target. We expect that unauthorized parties will continue to attempt to gain access to our systems or facilities
through various means, including hacking into our systems or facilities or those of our customers or vendors, or attempting to fraudulently induce (for example,
through spear phishing attacks or social engineering) our employees, customers, vendors or other users of our systems into disclosing user names, passwords, or
other  sensitive  information,  which  may  in  turn  be  used  to  access  our  information  technology  systems.  Numerous  and  evolving  cybersecurity  threats,  including
advanced and persisting cyberattacks, phishing and social engineering schemes, could compromise the confidentiality, availability, and integrity of the data in our
systems. Our cybersecurity programs and efforts to protect our systems and data, and to prevent, detect and respond to data security incidents, may not prevent
these threats  or provide security.  Further, the security  measures  and procedures  our customers,  vendors and other users of our systems have in place to protect
sensitive consumer data and other information may not be successful or sufficient to counter all data breaches, cyberattacks or system failures.

Our information technology and infrastructure may be vulnerable to cyberattacks or security breaches, and third parties may be able to access our customers’
or  employees’  personal  or  proprietary  information  that  is  stored  on  or  accessible  through  those  systems.  We  have  experienced  from  time  to  time,  and  may
experience  in  the  future,  breaches  of  our  security  measures  due  to  human  error,  malfeasance,  system  errors  or  vulnerabilities  or  other  irregularities.  Actual  or
perceived breaches of our security could, among other things:

•

• 
• 
• 
• 
• 
• 
• 
• 
• 

interrupt our operations,
result in our systems or services being unavailable,
result in improper disclosures of data,
materially harm our reputation and brands,
result in significant regulatory scrutiny and legal and financial exposure,
cause us to incur significant remediation costs,
lead to loss of customer confidence in, or decreased use of, our products and services,
divert the attention of management from the operation of our business,
result in significant contractual penalties or other payments as a result of third party losses or claims, and
adversely affect our business and result of operations.

21

In  addition,  any  cyberattacks  or  data  security  breaches  affecting  companies  that  we  acquire  or  our  customers  or  vendors  (including  data  center  and  cloud
computing  providers)  could  have  similar  negative  effects  on  our  business.  The  coverage  under  our  insurance  policies  may  not  be  adequate  to  reimburse  us  for
losses caused by security breaches.

We
are
subject
to
a
number
of
risks
related
to
acceptance
of
credit
cards
and
debit
cards
for
customer
payments.
We accept payments for our services through
credit and debit card transactions. For credit and debit card payments, we pay interchange and other fees, which may increase over time. An increase in those fees
may require us to increase the prices we charge and would increase our cost of revenues, either of which could harm our business, financial condition or results of
operations.

We depend  on processing  vendors  to complete  credit  and debit  card  transactions.  If  we  or our processing  vendors fail  to  maintain  adequate  systems  for  the
authorization  and  processing  of  credit  card  transactions,  it  could  cause  one  or  more  of  the  major  credit  card  companies  to  disallow  our  continued  use  of  their
payment products. We could lose customers if we are not able to continue to use payment products of the major credit card companies. In addition, if the systems
for the authorization and processing of credit card transactions fail to work properly and, as a result, we do not charge our customers’ credit cards on a timely basis
or at all, our business, revenue, results of operations and financial condition could be harmed.     

We are also subject to payment card association operating rules, certification requirements and rules governing electronic funds transfers, which could change
or  be  reinterpreted  in  ways  that  make  it  more  difficult  for  us  to  comply.  We  are  required  to  comply  with  payment  card  industry  security  standards.  Failing  to
comply  with  those  standards  may  violate  payment  card  association  operating  rules,  federal  and  state  laws  and  regulations,  and  the  terms  of  our  contracts  with
payment processors. Any failure to comply also may subject us to fines, penalties, damages and civil liability, and may result in the loss of our ability to accept
credit and debit card payments. Further, there is no guarantee that such compliance will prevent illegal or improper use of our payment systems or the theft, loss, or
misuse of data pertaining to credit and debit cards, cardholders and transactions. If we fail to adequately control fraudulent credit card transactions, we may face
civil  liability,  diminished  public  perception  of  our  security  measures  and  significantly  higher  credit  card-related  costs,  each  of  which  could  harm  our  business,
results of operations and financial condition.

If we are unable to maintain our chargeback rate or refund rates at acceptable levels, our processing vendors may increase our transaction fees or terminate
their relationships with us. Any increases in our credit and debit card fees could harm our results of operations, particularly if we elect not to raise our rates for our
services to offset the increase. The termination of our ability to process payments on any major credit or debit card would significantly impair our ability to operate
our business.

Technical
problems
or
disruptions
that
affect
either
our
customers’
ability
to
access
our
services,
or
the
software,
internal
applications,
database
and
network
systems 
underlying 
our 
services, 
could 
damage 
our 
reputation 
and 
brands 
and 
lead 
to 
reduced 
demand 
for 
our 
information, 
analytics 
and 
online 
marketplace
services,
lower
revenues
and
increased
costs
. Our business, brands and reputation depend upon the satisfactory performance, reliability  and availability  of our
websites,  the  Internet  and  our  service  providers.  Interruptions  in  these  systems,  whether  due  to  system  failures,  computer  viruses,  software  errors,  physical  or
electronic break-ins, or malicious hacks or attacks on our systems (such as denial of service attacks), could affect the security and availability of our services on
our mobile applications and our websites and prevent or inhibit the ability of users to access our services. Our operations also depend on our ability to protect our
databases, computers and software, telecommunications equipment and facilities against damage from potential dangers such as fire, flood, power loss, security
breaches, computer viruses, telecommunications failures, terrorist attacks, acts of war, electronic and physical break-ins, computer viruses, earthquakes and similar
events. Our users rely on our services when conducting their own businesses. Disruptions in, or reductions in ability to access, our services for whatever reason
could  damage  our  users’  businesses,  harm  our  reputation,  result  in  additional  costs  or  result  in  reduced  demand  for  our  information,  analytics  and  online
marketplace services, any of which could harm our business, results of operations and financial condition.

In  addition,  the  software,  internal  applications  and  systems  underlying  our  services  are  complex  and  may  not  be  error-free.  Our  careful  development  and
testing may not be sufficient to ensure that we will not encounter technical problems when we attempt to enhance our software, internal applications and systems.
Any inefficiencies, errors or technical problems with our software, internal applications and systems could reduce the quality of our services or interfere with our
customers’ access to our information, analytics  and online marketplaces,  which could reduce the demand for our services,  lower our revenues and increase our
costs.

The majority of the communications, network and computer hardware used to operate our mobile applications and websites are located at facilities in Virginia
and California. We do not own or control the operation of certain of these facilities. Our systems and operations are vulnerable to damage or interruption from fire,
flood, power loss, security breaches, computer viruses, telecommunications failure, terrorist attacks, acts of war, electronic and physical break-ins, earthquakes and
similar events. These risks may be increased with respect to operations housed at facilities we do not own or control. The occurrence of any of the

22

foregoing events could result in damage to our systems and hardware or could cause them to fail completely, and our insurance may not cover such events or may
be insufficient to compensate us for losses that may occur.

A failure of our systems at any site could result in reduced functionality for our users, and a total failure of our systems could cause our mobile applications or
websites to be inaccessible. Problems faced or caused by our information technology service providers, including content distribution service providers, private
network  providers,  Internet  providers  and  third-party  web-hosting  providers,  or  with  the  systems  by  which  they  allocate  capacity  among  their  customers  (as
applicable),  could  adversely  affect  the  experience  of  our  users.  Any  financial  difficulties,  such  as  bankruptcy  reorganization,  faced  by  these  third-party  service
providers or any of the service providers with whom they contract may have negative effects on our business, the nature and extent of which are difficult to predict.
If our third-party service providers are unable to keep up with our growing needs for capacity, our business could be harmed. In addition, if distribution channels
for our mobile applications experience disruptions, such disruptions could adversely affect the ability of users and potential users to access or update our mobile
applications, which could harm our business.

Our business interruption insurance may not cover certain events or may be insufficient to compensate us for the potentially significant losses, including the
potential harm to the future growth of our business, which may result from interruptions in our service  as a result of system failures  or malicious  attacks. Any
errors, defects, disruptions or other performance problems with our services could harm our reputation, business, results of operations and financial condition.

If
we
are
not
able
to
obtain
and
maintain
accurate,
comprehensive
or
reliable
data,
we
could
experience
reduced
demand
for
our
information,
analytics
and
online 
marketplace 
services
 .  Our  success  depends  on  our  clients’  confidence  in  the  comprehensiveness,  accuracy  and  reliability  of  the  data  and  analysis  we
provide. The task of establishing and maintaining accurate and reliable data and analysis is challenging. If our data, including the data we obtain from third parties
or  directly  from  brokers  through  the  Listing  Manager  feature  on  CoStar,  or  analysis  is  not  current,  accurate,  comprehensive  or  reliable,  we  could  experience
reduced demand for our services or legal claims by our customers, which could result in lower revenues and higher expenses.

Market
volatility
may
have
an
adverse
effect
on
our
stock
price
. The trading price of our common stock has fluctuated widely in the past, and we expect that it
will continue to fluctuate in the future. The price could fluctuate widely based on numerous factors, including: economic factors or conditions; quarter-to-quarter
variations  in  our  operating  results;  changes  in  analysts’  estimates  of  our  earnings;  announcements  by  us  or  our  competitors  of  technological  innovations,  new
services,  or  other  significant  or  strategic  information;  general  conditions  in  the  commercial  real  estate  industry;  general  conditions  of  local,  national  or  global
economies; developments or disputes concerning copyrights or proprietary rights or other legal proceedings; and regulatory developments. In addition, the stock
market in general, and the shares of Internet-related and other technology companies in particular, have historically experienced extreme price fluctuations. This
volatility has had a substantial effect on the market prices of securities issued by many companies for reasons unrelated to the operating performance of the specific
companies and may have the same effect on the market price of our common stock.

Competition 
could 
render 
our 
services 
uncompetitive 
and 
reduce 
our 
profitability
 .  The  markets  for  information  systems  and  services  and  for  online
marketplaces  in  general  is  highly  competitive  and  rapidly  changing.  Competition  in  these  markets  may  increase  further  if  economic  conditions  or  other
circumstances cause customer bases and customer spending to decrease and service providers to compete for fewer customer resources. Our existing competitors,
or future competitors, may have greater name recognition, larger customer bases, better technology or data, lower prices, easier access to data, greater user traffic
or greater financial, technical or marketing resources than we have. Our competitors may be able to undertake more effective marketing campaigns, obtain more
data,  adopt  more  aggressive  pricing  policies,  make  more  attractive  offers  to  potential  employees,  subscribers,  advertisers,  distribution  partners  and  content
providers or may be able to respond more quickly to new or emerging technologies or changes in user requirements. If we are unable to retain customers or obtain
new customers, our revenues could decline. Increased competition could result in lower revenues and higher expenses, which would reduce our profitability.

Our 
focus 
on 
internal 
and 
external 
investments 
may 
place 
downward 
pressure 
on 
our 
operating 
margins.
 We  continue  to  invest  in  our  business,  including
internal investments in product development to expand the breadth and depth of services we provide to our customers and investments in sales and marketing to
generate  brand  awareness.  Our  investment  strategy  is  intended  to  increase  our  revenue  growth  in  the  future.  Our operating  margins  may  experience  downward
pressure in the short term as a result of investments. Furthermore, our investments may not have their intended effect or produce the expected results. In addition,
our external investments may lose value and we may incur impairment charges with respect to such investments. Such impairment charges may negatively impact
our profitability. If we are unable to successfully execute our investment strategy or if we fail to adequately anticipate and address potential problems, we may
experience decreases in our revenues and operating margins.

If
we
are
unable
to
enforce
or
defend
our
ownership
and
use
of
intellectual
property,
our
business,
brands,
competitive
position
and
operating
results
could
be

harmed
. The success of our business depends in large part on our intellectual property, including

23

intellectual property involved in our methodologies, database, services and software. We rely on a combination of trademark, trade secret, patent, copyright and
other laws, nondisclosure and noncompetition provisions, license agreements and other contractual provisions and technical measures to protect our intellectual
property  rights.  However,  current  law  may  not  provide  for  adequate  protection  of  our  databases  and  the  actual  data.  In  addition,  legal  standards  relating  to  the
validity, enforceability and scope of protection of proprietary rights in Internet-related businesses are uncertain and evolving, and changes in these standards may
adversely impact the viability or value of our proprietary rights. If we are not successful in protecting our intellectual property, including our content, our brands
and our business, results of operations and financial condition could be harmed. The same would be true if a court found that our services infringe other persons’
intellectual property rights. Any intellectual property lawsuits or threatened lawsuits in which we are involved, either as a plaintiff or as a defendant, could cost us
a  significant  amount  of  time  and  money  and  distract  management’s  attention  from  operating  our  business.  In  addition,  if  we  do  not  prevail  on  an  intellectual
property claim, this could result in a change to our methodology or information, analytics and online marketplace services and could reduce our profitability.

Effective trademark, trade secret, patent, and copyright protection may not be available in every country in which our services may be provided. The laws of
certain countries do not protect proprietary rights to the same extent as the laws of the United States and, therefore, in certain jurisdictions, we may be unable to
protect  our  intellectual  property  and  our  proprietary  technology  adequately  against  unauthorized  third-party  copying  or  use,  which  could  harm  our  competitive
position.

We  seek  to  enforce  our  rights  against  people  and  entities  that  infringe  our  intellectual  property,  including  through  legal  action.  Taking  such  action  may  be
costly, and we cannot ensure that such actions will be successful. Any increase in the unauthorized use of our intellectual property could make it more expensive
for us to do business and harm our results of operations or financial condition.

We
may
not
be
able
to
successfully
halt
the
operation
of
websites
that
aggregate
our
data,
as
well
as
data
from
other
companies,
such
as
copycat
websites
that
may
misappropriate
our
data.
Third parties may misappropriate our data through website scraping, robots or other means and aggregate this data on their websites
with data from other companies. In addition, “copycat” websites may misappropriate data on our website and attempt to imitate our brands or the functionality of
our website. We may not be able to detect all such websites in a timely manner and, even if we could, technological and legal measures may be insufficient to stop
their operations. In some cases, particularly in the case of websites operating outside of the U.S., our available remedies may not be adequate to protect us against
the misappropriation of our data. Regardless of whether we can successfully enforce our rights against the operators of these websites, any measures that we may
take could require us to expend significant financial or other resources.

Third
party
claims,
litigation
or
government
investigations
to
which
we
are
subject
or
in
which
we
become
involved
may
significantly
increase
our
expenses
and
adversely
affect
our
stock
price
. Currently and from time to time, we are a party to various third party claims, lawsuits, or government investigations. Any
lawsuits, threatened lawsuits or government investigations in which we are involved, whether as plaintiff or defendant, could cost us a significant amount of time
and money, could distract management’s attention away from operating our business, could result in negative publicity and could adversely affect our stock price.
In addition, if any claims are determined against us or if a settlement requires us to pay a large monetary amount or take other action that materially restricts or
impedes our operations, our profitability could be significantly reduced and our financial position could be adversely affected. Our insurance may not be sufficient
to cover any losses we incur in connection with litigation claims.

We 
may 
be 
subject 
to 
legal 
liability 
for 
collecting, 
displaying 
or 
distributing 
information
 .  Because  the  content  in  our  database  is  collected  from  various
sources  and  distributed  to  others,  we  may  be  subject  to  claims  for  breach  of  contract,  defamation,  negligence,  unfair  competition  or  copyright  or  trademark
infringement or claims based on other theories. We could also be subject to claims based upon the content that is accessible from our website through links to other
websites or information on our website supplied by third parties. We could also be subject to claims that the collection or provision of certain information breached
laws and regulations relating to privacy and data protection. Even if these claims do not result in liability to us, we could incur significant costs in investigating and
defending against any claims and we could be subject to public notice requirements that may affect our reputation in the marketplace. Our potential liability for
information distributed by us to others could require us to implement measures to reduce our exposure to such liability, which may require us to expend substantial
resources and limit the attractiveness of our information, analytics and online marketplaces to users.

Our
business
depends
on
retaining
and
attracting
highly
capable
management
and
operating
personnel
. Our success depends in large part on our ability to
retain  and  attract  management  and  operating  personnel,  including  our  President  and  Chief  Executive  Officer,  Andrew  Florance,  and  our  other  officers  and  key
employees. Our business requires highly skilled technical, sales, management, web product and development, marketing and research personnel, who are in high
demand and are often subject to competing offers. To retain and attract key personnel, we use various measures, including employment agreements, awards under

24

a stock incentive plan and incentive bonuses for key employees. These measures may not be enough to retain and attract the personnel we need or to offset the
impact on our business of the loss of the services of Mr. Florance or other key officers or employees. 

An 
impairment 
in 
the 
carrying 
value 
of 
goodwill 
could 
negatively 
impact 
our 
consolidated 
results 
of 
operations 
and 
net 
worth.
 Goodwill  and  identifiable
intangible assets not subject to amortization are tested annually by each reporting unit on October 1 of each year for impairment and are tested for impairment
more frequently based upon the existence of one or more indicators. We assess the impairment of long-lived assets, identifiable intangibles and goodwill whenever
events or changes in circumstances indicate that the carrying value may not be recoverable. Judgments made by management relate to the expected useful lives of
long-lived  assets and our ability  to realize  undiscounted  cash flows of the carrying  amounts of such assets. The accuracy  of these judgments may be adversely
affected by several factors, including the factors listed below:

•
•
•
•

Significant underperformance relative to historical or projected future operating results;
Significant changes in the manner of our use of acquired assets or the strategy for our overall business;
Significant negative industry or economic trends; or
Significant decline in our market capitalization relative to net book value for a sustained period.

These types of events or indicators and the resulting impairment analysis could result in goodwill impairment charges in the future, which would reduce our
profitability.  Impairment  charges  could  negatively  affect  our  financial  results  in  the  periods  of  such  charges,  which  may  reduce  our  profitability.  As  of
December  31,  2018  ,  we  had  approximately  $1.6  billion  of  goodwill,  including  $1.6  billion  in  our  North  America  operating  segment  and  $38  million  in our
International operating segment.  

If
we
are
unable
to
obtain
or
retain
listings
from
commercial
real
estate
brokers,
agents,
property
owners
and
apartment
property
managers,
our
commercial
real 
estate 
("CRE") 
marketplace 
services, 
including 
but 
not 
limited 
to 
LoopNet, 
the 
Apartments.com 
network 
of 
rental 
websites, 
CoStar 
Showcase,
LandandFarm.com
and
LandsofAmerica.com,
could
be
less
attractive
to
current
or
potential
customers,
which
could
reduce
our
revenues.
The value of our CRE
marketplace services to our customers depends on our ability to increase the number of property listings provided and searches conducted. The success of our CRE
marketplace services depends substantially on the number of property listings submitted by brokers, agents, property owners and, in the case of apartment rentals,
property managers. This is because an increase in the number of listings increases the utility of the online service and of its associated search, listing and marketing
services. If agents marketing large numbers of property listings, such as large brokers in key real estate markets, choose not to continue their listings with us, or
choose  to  list  them  with  a  competitor,  our  CRE  marketplace  services  could  be  less  attractive  to  other  real  estate  industry  transaction  participants,  resulting  in
reduced  revenue.  Similarly,  the  value  and  utility  of  our  other  marketplaces,  including  BizBuySell  and  BizQuest,  are  also  dependent  on  attracting  and  retaining
listings.

If
we
are
unable
to
convince
commercial
real
estate
professionals
that
our
CRE
marketplace
services
are
superior
to
traditional
methods
of
listing,
searching
and
marketing
commercial
real
estate,
they
could
choose
not
to
use
those
services,
which
could
reduce
our
revenues
or
increase
our
expenses.
The primary source
of  new  customers  for  our  CRE  marketplace  services  is  participants  in  the  commercial  real  estate  community.  Many  commercial  real  estate  professionals  are
accustomed to listing, searching and marketing  real estate in traditional  and off-line ways, such as by distributing  print brochures, sharing written lists, placing
signs on properties, word-of-mouth and newspaper advertisements. Commercial real estate and investment professionals may prefer to continue to use traditional
methods or may be slow to adopt and accept our online products and services. If we are not able to persuade commercial real estate participants of the efficacy of
our  online  products  and  services,  they  may  choose  not  to  use  our  CRE  marketplace  services,  which  could  negatively  impact  our  business.  Similarly,  if  we  are
unable  to  convince  the  business  and  investment  community  to  utilize  our  online  business  for  sale  marketplaces  rather  than  traditional  methods  of  listing  and
marketing businesses for sale, our revenues could be negatively affected.

If 
we 
are 
unable 
to 
increase 
our 
revenues 
or 
our 
operating 
costs 
are 
higher 
than 
expected, 
our 
profitability 
may 
decline 
and 
our 
operating 
results 
may
fluctuate
significantly
. We may not be able to accurately forecast our revenues or future revenue growth rate. Many of our expenses, particularly personnel costs
and  occupancy  costs,  are  relatively  fixed.  As  a  result,  we  may  not  be  able  to  adjust  spending  quickly  enough  to  offset  any  unexpected  increase  in  expenses  or
revenue  shortfall.  We  may  experience  higher  than  expected  operating  costs,  including  increased  personnel  costs,  occupancy  costs,  selling  and  marketing  costs,
investments  in  geographic  expansion,  acquisition  costs,  communications  costs,  travel  costs,  software  development  costs,  professional  fees  and  other  costs.  If
operating costs exceed our expectations and cannot be adjusted accordingly, our profitability may be reduced and our results of operations and financial position
will be adversely affected. Additionally, we may not be able to sustain our revenue growth rates, and our percentage revenue growth rates may decline. Our ability
to increase our revenues and operating profit will depend on increased demand for our services. Our sales are affected by, among other things, general economic
and commercial real estate conditions. Reduced demand, whether due to changes in customer preference, a weakening of the U.S. or global economy, competition
or other reasons, may result in decreased revenues and growth, adversely affecting our operating results.

25

Our
current
or
future
geographic
expansion
plans
may
not
result
in
increased
revenues,
which
may
negatively
impact
our
business,
results
of
operations
and
financial
position
. Expanding into new markets and investing resources towards increasing the depth of our coverage within existing markets imposes additional
burdens on our research, systems development, sales, marketing and general managerial resources. If we are unable to manage our expansion efforts effectively, if
our  expansion  efforts  take  longer  than  planned  or  if  our  costs  for  these  efforts  exceed  our  expectations,  our  financial  position  could  be  adversely  affected.  In
addition, if we incur significant costs to improve data quality within existing markets, or are not successful in marketing and selling our services in these markets
or  in  new  markets,  our  expansion  may  have  a  material  adverse  effect  on  our  financial  position  by  increasing  our  expenses  without  increasing  our  revenues,
adversely affecting our profitability.

International
operations
expose
us
to
additional
business
risks,
which
may
reduce
our
profitability
. Our international operations and expansion subject us to
additional  business  risks,  including:  currency  exchange  rate  fluctuations;  adapting  to  the  differing  business  practices  and  laws  in  foreign  countries;  including
differing  laws  regarding  privacy  and  data  protection;  difficulties  in  managing  foreign  operations;  limited  protection  for  intellectual  property  rights  in  some
countries; difficulty in collecting accounts receivable and longer collection periods; costs of enforcing contractual obligations; impact of recessions in economies
outside the U.S.; and potentially adverse tax consequences. In addition, international expansion imposes additional burdens on our executive and administrative
personnel,  systems  development,  research  and  sales  departments,  and  general  managerial  resources.  If  we  are  not  able  to  manage  our  international  operations
successfully,  we  may  incur  higher  expenses  and  our  profitability  may  be  reduced.  Finally,  the  investment  required  for  additional  international  expansion  could
exceed the profit generated from such expansion, which would reduce our profitability and adversely affect our financial position.

Fluctuating 
foreign 
currencies 
may 
negatively 
impact 
our 
business, 
results 
of 
operations 
and 
financial 
position.
 Due  to  our  acquisitions  of  CoStar  U.K.
Limited (formerly FOCUS Information Limited), Property and Portfolio Research Ltd., Grecam S.A.S., Realla Ltd., the assets of Belbex Corporate, S.L., Thomas
Daily, as well as our expansion into Canada, a portion of our business is denominated in the British Pound, Euro and Canadian dollar. As a result, fluctuations in
foreign  currencies  may  have  an  impact  on  our  business,  results  of  operations  and  financial  position.  Foreign  currency  exchange  rates  have  fluctuated  and  may
continue  to  fluctuate.  Significant  foreign  currency  exchange  rate  fluctuations  may  negatively  impact  our  international  revenue,  which  in  turn  affects  our
consolidated revenue. Currencies may be affected by internal factors, general economic conditions and external developments in other countries, all of which can
have  an  adverse  impact  on  a  country’s  currency.  Currently,  we  are  not  party  to  any  hedging  transactions  intended  to  reduce  our  exposure  to  exchange  rate
fluctuations. We may seek to enter into hedging transactions in the future, but we may be unable to enter into these transactions successfully, on acceptable terms
or at all. We cannot predict whether we will incur foreign exchange losses in the future. Further, significant foreign exchange fluctuations resulting in a decline in
the  respective  local  currency  may  decrease  the  value  of  our  foreign  assets,  as  well  as  decrease  our  revenues  and  earnings  from  our  foreign  subsidiaries,  which
would reduce our profitability and adversely affect our financial position.

The
economic
effects
of
“Brexit”
may
affect
relationships
with
existing
and
future
customers
and
could
have
an
adverse
impact
on
our
business
and
operating
results.
On June  23, 2016, the  U.K. held a  referendum  in which  British  citizens  approved  an exit  from  the  European  Union (“E.U.”),  commonly  referred  to as
“Brexit.” On March 29, 2017, the United Kingdom provided its official notice to the European Council that it intends to leave the European Union, commencing a
period  of  up  to  two  years  for  the  U.K.  and  the  other  E.U.  member  states  to  negotiate  the  terms  of  the  withdrawal.  Uncertainty  over  the  terms  of  the  U.K.’s
withdrawal from the E.U. could cause political and economic uncertainty in the U.K. and the rest of Europe, which could harm our business and financial results.
In particular, Brexit could result in significant volatility in global equity markets, currency exchange rates and other asset prices, including those related to real
property. The impact to us from Brexit will depend, in part, on the outcome of tariff, trade, regulatory and other negotiations, the results of which are currently
uncertain. This impact may affect not only our U.K. operations but operations in other parts of the E.U. Any transitional or permanent agreements resulting from
such negotiations could potentially disrupt the markets we serve and the tax jurisdictions in which we operate.

A
potential
devaluation
of
the
local
currencies
of
our
international
customers
relative
to
the
U.S.
dollar
may
impair
the
purchasing
power
of
our
international

customers
and
could
cause
international
customers
to
decrease
or
cancel
orders,
or
terminate
or
fail
to
renew
subscriptions
for
our
services.

We  translate  sales  and  other  results  denominated  in  foreign  currency  into  U.S. dollars  for  our  financial  statements.  During  periods  of  a  strengthening  U.S.
dollar,  our  reported  international  sales  and  earnings  could  be  reduced  because  foreign  currencies  may  translate  into  fewer  U.S.  dollars.  Resulting  asset  price
volatility that could follow the withdrawal of the U.K. from the E.U. may create global economic uncertainty, which may cause our customers to closely monitor
their costs and reduce their spending budgets on our products and services. In addition, Brexit could lead to legal uncertainty and potentially divergent national
laws and regulations as the U.K determines which E.U. laws to replace or replicate, and those laws and regulations may be cumbersome, difficult or costly in terms
of compliance. Further, Brexit may lead other E.U. member countries to consider referendums regarding

26

their E.U. membership. Any of these effects of Brexit, among others, could adversely affect our business, financial condition, operating results and cash flows.

Changes
in
laws,
regulations
or
fiscal
and
tax
policies
or
the
manner
of
their
interpretation
or
enforcement
could
adversely
impact
our
financial
performance.
New laws or regulations, or changes in existing laws or regulations, or the manner of their interpretation or enforcement, could increase our cost of doing business.
In  particular,  there  may  be  significant  changes  in  U.S.  laws  and  regulations  by  the  current  U.S.  presidential  administration  that  could  affect  a  wide  variety  of
industries  and  businesses,  including  our  business.  The  current  U.S.  presidential  administration  has  called  for  substantial  change  to  fiscal  and  tax  policies,  and
recently adopted tax reform legislation. If the current U.S. presidential administration materially modifies U.S. laws and regulations or fiscal and other tax policies,
our business, financial condition, and results of operations could be adversely affected.

In December 2017, the United States enacted The Tax Cuts and Jobs Act (the "Tax Act"), and various provisions of the new law may adversely affect us.
Certain aspects of Tax Reform are unclear and may not be clarified for some time. During 2018, the Department of the Treasury issued certain guidance in the
form of notices and proposed regulations with respect to several provisions of the new legislation. We expect that additional regulations or other guidance may be
issued with  respect  to  the Tax  Act in  2019 and  subsequent  years.  We  continue  to examine  the impact  this tax  reform  legislation  may have  on our  business. In
addition, if federal, state, local or foreign tax authorities change applicable tax laws or issue new guidance, including in response to the Tax Act, our overall taxes
could increase, and our business, financial condition or results of operations may be adversely impacted.

Our
indebtedness
could
adversely
affect
us,
including
by
decreasing
our
business
flexibility
and
increasing
our
costs
. The 2017 Credit Agreement provides
for  a  $750  million  revolving  credit  facility  with  a  term  of  five  years  from  a  syndicate  of  financial  institutions  as  lenders  and  issuing  banks.  The  2017  Credit
Agreement contains customary restrictive covenants imposing operating and financial restrictions on us, including restrictions that may limit our ability to engage
in acts that we believe may be in our long-term best interests. These covenants restrict our ability and the ability of our subsidiaries to, among other things, (i) incur
additional indebtedness, (ii) create, incur, assume or permit to exist any liens, (iii) enter into mergers, consolidations or similar transactions, (iv) make investments
and acquisitions,  (v) make  certain  dispositions  of assets,  (vi)  make  dividends,  distributions  and prepayments  of certain  indebtedness  and  (vii)  enter  into certain
transactions with affiliates.

The operating restrictions and financial covenants in the 2017 Credit Agreement and any future financing agreements may limit our ability to finance future
operations or capital needs, to engage in other business activities or to respond to changes in market conditions. Our ability to comply with any financial covenants
could be affected materially by events beyond our control, and we may be unable to satisfy any such requirements. If we fail to comply with these covenants, we
may need to seek waivers or amendments of such covenants, seek alternative or additional sources of financing or reduce our expenditures. We may be unable to
obtain such waivers, amendments or alternative or additional financing on a timely basis or at all, or on favorable terms.

We  are  required  to  make  periodic  principal  and  interest  payments  pursuant  to  the  terms  of  the  2017  Credit  Agreement.  If  an  event  of  default  occurs,  the
interest rate on overdue amounts will increase and the lenders under the 2017 Credit Agreement may declare all outstanding borrowings, together with accrued
interest and other fees, to be immediately due and payable and may exercise remedies in respect of the collateral. We may not be able to repay all amounts due
under the 2017 Credit Agreement in the event these amounts are declared due upon an event of default.

Negative 
conditions 
in
the 
global
credit 
markets
may
affect 
the
liquidity 
of
a
portion
of
our
long-term 
investments.
   Currently, our long-term investments
include mostly AAA-rated auction rate securities (“ARS”), which are primarily student loan securities supported by guarantees from the Federal Family Education
Loan Program (“FFELP”) of the U.S. Department of Education. Continuing negative conditions in the global credit markets have prevented some investors from
liquidating  their  holdings  of  auction  rate  securities  because  the  amount  of  securities  submitted  for  sale  has  exceeded  the  amount  of  purchase  orders  for  such
securities. As of December 31, 2018 , we held $11 million par value of ARS, all of which failed to settle at auctions. When an auction fails for ARS in which we
have invested, we may be unable to liquidate some or all of these securities at par. In the event we need or desire to immediately access these funds, we will not be
able to do so until a future auction on these investments is successful, a buyer is found outside the auction process or an alternative action is determined. If a buyer
is found but is unwilling to purchase the investments at par, we may incur a loss, which would reduce our profitability and adversely affect our financial position.

Our
operating
results
and
revenues
are
subject
to
fluctuations
and
our
quarterly
financial
results
may
be
subject
to
seasonality
and
market
cyclicality,
each
of
which 
could 
cause 
our 
stock 
price 
to 
be 
negatively 
affected.
 The  commercial  real  estate  market  may  be  influenced  by  general  economic  conditions,  economic
cycles, annual seasonality factors and many other factors, which in turn may impact our financial results. The market is large and fragmented. The different sectors
of  the  industry,  such  as  office,  industrial,  retail,  multifamily,  and  others,  are  influenced  differently  by  different  factors,  and  have  historically  moved  through
economic cycles with different timing. As such, it is difficult to estimate the potential impact of economic cycles and conditions

27

or seasonality from year-to-year on our overall operating results. In addition, our results may be impacted by seasonality. The timing of widely observed holidays
and vacation periods, particularly slowdowns during the end-of-year holiday period, and availability of real estate agents and related service providers during these
periods,  could  significantly  affect  our  quarterly  operating  results  during  that  period.  If  we  are  unable  to  adequately  respond  to  economic,  seasonal  or  cyclical
conditions,  our  revenues,  expenses  and  operating  results  may  fluctuate  from  quarter  to  quarter.  Our  operating  results,  revenues  and  expenses  may  fluctuate  for
many reasons, including those described below and elsewhere in this Annual Report on Form 10-K:

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

Rates of subscriber adoption and retention;
Timing of our sales conference or significant marketing events;
A slow-down during the end-of-year holiday period;
Changes in our pricing strategy and timing of changes;
The timing and success of new service introductions and enhancements;
The shift of focus from, or phase out of services that overlap or are redundant with other services we offer;
The amount and timing of our operating expenses and capital expenditures;
Our ability to control expenses;
The amount and timing of non-cash stock-based charges;
Costs related to acquisitions of businesses or technologies or impairment charges associated with such investments and acquisitions;
Competition;
Changes or consolidation in the real estate industry;
Our investments in geographic expansion and to increase coverage in existing markets;
Interest rate fluctuations;
Successful execution of our expansion and integration plans;
The development of our sales force;
Foreign currency and exchange rate fluctuations;
Inflation; and
Changes in client budgets.

These fluctuations  or seasonality effects could negatively affect our results of operations during the period in question and/or future periods or cause our
stock price to decline. In addition, changes in accounting policies or practices may affect our level of net income. Fluctuations in our financial results, revenues and
expenses may cause the market price of our common stock to decline.

The
consent
order
approved
by
the
Federal
Trade
Commission
in
connection
with
the
LoopNet
merger
imposes
conditions
that
could
have
an
adverse
effect
on
us
and
our
business,
and
failure
to
comply
with
the
terms
of
the
consent
order
may
result
in
adverse
consequences
for
the
combined
company.
On April 26,
2012, the FTC accepted the consent order in connection with the LoopNet merger that was previously agreed to among the FTC staff, CoStar, and LoopNet on
April 17, 2012. The consent order was subject to a 30-day public comment period, and on August 29, 2012, the FTC issued its final acceptance of the consent
order.

The consent order, which is publicly available on the FTC's website at http://www.ftc.gov/,  requires us to maintain  certain business practices that the FTC
believes are pro-competitive.  For example, the consent order requires us to license our products to customers who have bought its competitors' products on a non-
discriminatory  basis. In addition,  we are required  to provide  the FTC with advance  written  notification  of certain  acquisitions  for which notification  would not
otherwise  be  required  under  the  Hart-Scott-Rodino  Premerger  Notification  Act.  This  provision  of  the  consent  order  requiring  CoStar  to  provide  the  FTC  with
advance  written  notification  of  certain  acquisitions  could  prevent  us  from  closing  certain  acquisitions  or  add  significant  time  and  cost  to  these  potential
acquisitions,  ultimately  making an acquisition  prohibitive  or preventing  us from realizing  anticipated  benefits  of an acquisition.  In the event  that we fail  or are
unable to comply with the terms of the consent order, we could be subject to an enforcement  proceeding that could result in substantial fines and/or injunctive
relief.

Changes 
in 
accounting 
and 
reporting 
policies 
or 
practices 
may 
affect 
our 
financial 
results 
or 
presentation 
of 
results, 
which 
may 
affect 
our 
stock 
price
 .
Changes in accounting and reporting policies or practices could reduce our net income, which reductions may be independent of changes in our operations. These
reductions in reported net income could cause our stock price to decline.

Item 1B.

Unresolved Staff Comments

None.

Item 2.

Properties

28

 
Our headquarters is located at 1331 L Street, NW, in downtown Washington, DC, where we occupy approximately 157,494 square feet of office space, with a
lease that expires May 31, 2025 (with two 5-year renewal options). Our headquarters is used primarily by our North America operating segment. Our principal
facility in the U.K. is located in London, where we occupy 23,064 square feet of office space. Our lease for this facility has a term ending August 31, 2025. This
facility is used by our International operating segment.

We also operate our research functions out of leased office spaces in Richmond, Virginia, San Diego, California and Atlanta, Georgia. Additionally, we lease
office space in a variety of other metropolitan areas. These locations include, among others, the following: Austin, Texas; Boston, Massachusetts; Chicago, Illinois;
Irvine, California; Los Angeles, California; and San Francisco, California. 

We believe these facilities are suitable and appropriately support our business needs.

Item 3.

Legal Proceedings

Currently,  and  from  time  to  time,  we  are  involved  in  litigation  incidental  to  the  conduct  of  our  business.  We  are  not  currently  a  party  to  any  lawsuit  or
proceeding that, in the opinion of our management based on consultations with legal counsel, is likely to have a material adverse effect on our financial position or
results of operations.

Item 4.

Mine Safety Disclosures

Not Applicable.

29

PART II

Item 5.

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

Our common stock is traded on the Nasdaq Global Select Market under the symbol “CSGP.” As of February 1, 2019, there were 1,422 holders of record of our

common stock.

Dividend
Policy.
We  have  never  declared  or  paid  any  dividends  on  our  common  stock.  We  do  not  anticipate  paying  any  dividends  on  our  common  stock

during the foreseeable future, but intend to retain any earnings for future growth of our business.

Recent 
Issues 
of 
Unregistered 
Securities.
 We  did  not  issue  any  unregistered  securities  during  the  years  ended  December  31, 2017  and 2018 other  than  as

disclosed in our Current Report on Form 8-K filed with the SEC on February 21, 2018.

Issuer
Purchases
of
Equity
Securities.
  The following table is a summary of our repurchases of common stock during each of the three months in the quarter

ended December 31, 2018 :

ISSUER PURCHASES OF EQUITY SECURITIES

 Month, 2018

October 1 through 31

November 1 through 30

December 1 through 31

Total

Total Number of
Shares
Purchased

397

—

1,420

1,817

Average Price Paid
per Share

$412.01

—

348.49

$362.37

(1)  

Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs

Maximum Number of
Shares that May Yet
Be Purchased Under
the Plans or
Programs

—

—

—

—

—

—

—

—

__________________________    
(1) The number of shares purchased consists of shares of common stock tendered by employees to the Company to satisfy the employees' minimum tax withholding obligations arising as a result
of vesting of restricted stock grants under the Company's 2007 Stock Incentive Plan, as amended (the "2007 Plan"), and the Company’s 2016 Stock Incentive Plan, as amended, which shares
were purchased by the Company based on their fair market value on the trading day immediately preceding the vesting date. None of these share purchases were part of a publicly announced
program to purchase common stock of the Company.

30

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
Stock Price Performance Graph

The stock performance graph below shows how an initial investment of $100 in our common stock would have compared to:

•

•

An equal investment in the Standards & Poor's Stock 500 (“S&P 500”) Index; and

An equal investment in the S&P 500 Internet Software & Services Index.

The comparison covers the period beginning December 31, 2013 , and ending on December 31, 2018 , and assumes the reinvestment of any dividends. Note

that this performance is historical and is not necessarily indicative of future price performance.

Company / Index

CoStar Group, Inc.

S&P 500 Index

S&P 500 Internet Software & Services Index

12/31/13

12/31/14

12/31/15

12/31/16

12/31/17

12/31/18

  $

100.00   $

99.49   $

111.98   $

102.12   $

160.88   $

100.00  

100.00  

113.69  

106.60  

115.26  

142.11  

129.05  

149.47  

157.22  

210.38  

182.76

150.33

192.59

31

 
 
 
 
 
 
 
 
Item 6.

Selected Consolidated Financial and Operating Data

Selected Consolidated Financial and Operating Data
(in thousands, except per share data)

The  following  table  provides  selected  consolidated  financial  and  other  operating  data  for  the  five  years  ended  December  31,  2018  .  The  consolidated
statements of operations data shown below for each of the three years ended December 31, 2018 , 2017 and 2016 and the consolidated balance sheet data as of
December 31, 2018 and 2017 are derived from audited consolidated financial statements that are included in this report. The consolidated statements of operations
data for each of the years ended 2015 and 2014 and the consolidated balance sheet data as of December 31, 2016 , 2015 and 2014 shown below are derived from
audited consolidated financial statements for those years that are not included in this report. Information about prior period acquisitions and the adoption of recent
accounting pronouncements that may affect the comparability of the selected financial information presented below are included in "Item 1. Business" and Note 2
to  the  Notes  to  the  Consolidated  Financial  Statements  included  in  Part  IV  of  this  Annual  Report  on  Form  10-K.  The  total  assets  and  total  long-term  liabilities
reported  in  the  consolidated  balance  sheet  data  have  been  reclassified  to  conform  to  our  current  presentation  as  a  result  of  the  retrospective  application  of  the
authoritative guidance to simplify the presentation of debt issuance costs.

The following data should be read in conjunction with “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations,”

“Item 8. Financial Statements and Supplementary Data,” and the other information contained elsewhere in this Annual Report on Form 10-K.

Consolidated Statements of Operations Data:

2014

2015

2016

2017

2018

Year Ended December 31,

Revenues

Cost of revenues

Gross profit                                                                          

Operating expenses

Income from operations

Interest and other income

Interest and other expense

Loss on debt extinguishment

Income before income taxes

Income tax expense

Net income (loss)

Net income (loss) per share — basic 

Net income (loss) per share — diluted

Weighted average shares outstanding — basic

Weighted average shares outstanding — diluted

$

575,936   $

711,764   $

837,630   $

965,230   $

1,191,832

156,979  

418,957  

338,079  

80,878  

516  

(10,481)  

—  

70,913  

26,044  

188,885  

522,879  

511,424  

11,455  

537  

(9,411)  

—  

2,581  

6,046  

173,814  

663,816  

518,911  

144,905  

1,773  

(10,016)  

—  

136,662  

51,591  

220,403  

744,827  

571,011  

173,816  

4,044  

(9,014)  

(3,788)  

165,058  

42,363  

$

$

$

44,869   $

(3,465)   $

85,071   $

122,695   $

1.48   $

1.46   $

30,215  

30,641  

(0.11)   $

(0.11)   $

31,950  

31,950  

2.64   $

2.62   $

32,167  

32,436  

3.70   $

3.66   $

33,200  

33,559  

269,933

921,899

648,335

273,564

13,281

(2,830)

—

284,015

45,681

238,334

6.61

6.54

36,058

36,448

Consolidated Balance Sheet Data:

2014

2015

2016

2017

2018

Cash, cash equivalents and long-term investments

$

544,163   $

437,325   $

577,175   $

1,221,533   $

1,110,486

As of December 31,

Working capital

Total assets

Total long-term liabilities

Stockholders’ equity

480,521  

337,452  

472,545  

2,070,483  

2,079,571  

2,185,063  

440,982  

400,510  

375,904  

1,141,269  

2,873,441  

75,525  

1,059,139

3,312,957

136,856

1,513,546  

1,543,780  

1,654,213  

2,651,250  

3,021,942

32

 
 
 
 
 
 
 
 
 
 
Item 7.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

The  following  Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations  contains  “forward-looking  statements,”  including
statements about our beliefs and expectations. There are many risks and uncertainties that could cause actual results to differ materially from those discussed in the
forward-looking statements. Potential factors that could cause actual results to differ materially from those discussed in any forward-looking statements include,
but  are  not  limited  to,  those  stated  above  in  Item  1A.  under  the  headings  “Risk  Factors  -  Cautionary  Statement  Concerning  Forward-Looking  Statements”  and
“Risk Factors,” as well as those described from time to time in our filings with the Securities and Exchange Commission.

All  forward-looking  statements  are  based  on  information  available  to  us  on  the  date  of  this  filing  and  we  assume  no obligation  to  update  such  statements,
whether as a result of new information, future events or otherwise. The following discussion should be read in conjunction with our Quarterly Reports on Form 10-
Q,  Current  Reports  on  Form  8-K  and  other  filings  with  the  Securities  and  Exchange  Commission  and  the  consolidated  financial  statements  and  related  notes
included in this Annual Report on Form 10-K.

Overview

We are the number one provider of information, analytics and online marketplaces to the commercial real estate industry in the U.S. and the U.K. based on the
fact that we offer the most comprehensive commercial real estate database available; have the largest research department in the industry; own and operate leading
online marketplaces for commercial real estate and apartment listings in the U.S. based on the numbers of unique visitors and site visits per month; provide more
information, analytics and marketing services than any of our competitors. We created and compiled our standardized platform of information, analytics and online
marketplace  services  where  industry  professionals  and  consumers  of  commercial  real  estate,  including  apartments,  and  the  related  business  communities,  can
continuously interact and facilitate transactions by efficiently accessing and exchanging accurate and standardized real estate-related information.

Our subscription-based services consist primarily of information, analytics and online marketplace services offered over the internet to commercial real estate
industry  and  related  professionals.  Our  services  are  typically  distributed  to  our  clients  under  subscription-based  license  agreements  that  renew  automatically,  a
majority of which have a term of one year. Upon renewal, subscription contract rates may change in accordance with contract provisions or as a result of contract
renegotiations.  To  encourage  clients  to  use  our  services  regularly,  we  generally  charge  a  fixed  monthly  amount  for  our  subscription-based  services  rather  than
charging fees based on actual system usage or number of paid clicks. Our service offerings span all commercial property types, including office, retail, industrial,
multifamily, commercial land, mixed-use and hospitality. Depending on the type of service, contract rates are generally based on the number of sites, number of
users, organization size, the client's business focus, geography, the number and types of services to which a client subscribes, the number of properties a client
advertises and the prominence and placement of a client's advertised properties in the search results, as applicable. Our subscription clients generally pay contract
fees in advance on a monthly basis, but in some cases may pay us in advance on a quarterly or annual basis.

We  also  provide  market  research,  portfolio  and  debt  analysis,  management  and  reporting  capabilities,  and  real  estate  and  lease  management  solutions,

including lease administration and abstraction services, to commercial customers, real estate investors and lenders via our other service offerings.

Our principal information, analytics and online marketplace services are described in the following paragraphs by type of service:

Information
and
Analytics

CoStar
Suite®
. Our subscription-based information services consist primarily of CoStar Suite services. CoStar Suite is sold as a platform of service offerings
consisting of CoStar Property Professional®, CoStar COMPS Professional® and CoStar Tenant® and through our mobile applications, CoStar Mobile App and
CoStar Go. Our integrated suite of online service offerings includes information about space available for lease, comparable sales information, information about
properties  for  sale,  tenant  information,  internet  marketing  services,  analytical  capabilities,  information  for  clients'  websites,  information  about  industry
professionals and their business relationships and industry news.

Information
services
.  We  provide  real  estate  and  lease  management  solutions,  including  lease  administration  and  abstraction  services,  through  our  CoStar
Real Estate Manager service offerings, as well as, portfolio and debt analysis, management and reporting capabilities through our CoStar Investment Analysis and
CoStar  Risk  Analytics  service  offerings.  We  also  provide  information  services  internationally,  through  our  Grecam,  Belbex  and  Thomas  Daily  businesses  in
France, Spain and Germany, respectively.

33

 
Online
Marketplaces

Multifamily
 .  Apartments.com  TM  is  part  of  our  network  of  apartment  marketing  sites,  which  also  includes  ApartmentFinder.com  TM  ,  ForRent.com®,
ApartmentHomeLiving.com TM , WestsideRentals.com ®
, AFTER55.com®, CorporateHousing.com TM , ForRentUniversity.com® and Apartamentos.com TM , our
apartment-listing  site  offered  exclusively  in  Spanish.  Our  apartment  marketing  network  of  subscription-based  services  offers  renters  a  searchable  database  of
apartment listings and provides professional property management companies and landlords with an advertising destination. On February 21, 2018, we completed
the acquisition of ForRent, a division of Dominion Enterprises, including the ForRent.com, AFTER55.com, CorporateHousing.com and ForRentUniversity.com
apartment marketing sites. We continue to integrate, develop and cross-sell the services offered by ForRent. On November 8, 2018, we acquired Cozy Services,
Ltd. ("Cozy"), a leading provider of online rental solutions that provides a broad spectrum of services to both landlords and tenants, including property listings, rent
estimates,  rental  applications,  tenant  screening,  online  rent  payments  and  expense  tracking.  See  Note  4 to  the  Notes  to  the  Consolidated  Financial  Statements
included in Part IV of this Annual Report on Form 10-K for further discussion of the acquisition of Cozy.

Commercial
property
and
land
. Our LoopNet subscription-based, online marketplace services enable commercial property owners, landlords and real estate
agents  working  on  their  behalf  to  list  properties  for  sale  or  for  lease  and  to  submit  detailed  information  about  property  listings.  Commercial  real  estate  agents,
buyers and tenants use LoopNet's online marketplace services to search for available property listings that meet their criteria. On October 12, 2018, we acquired all
of the issued share capital of Realla Ltd. ("Realla"), the operator of a commercial property listings and data management platform in the U.K., including a free-to-
list search engine for commercial property listings. See Note 4 to the Notes to the Consolidated Financial Statements included in Part IV of this Annual Report on
Form 10-K for further discussion of the acquisition of Realla. Our BizBuySell services, which include BizQuest ®
, provide an online marketplace for businesses
for sale. Our Land.com network of sites, which provide online marketplaces for rural lands for sale, includes LandsofAmerica, LandAndFarm and LandWatch®

As of December 31, 2018 , 2017 and 2016 our annualized net bookings of subscription-based services on all contracts were approximately $50 million , $43
million and $29 million , respectively, calculated based on the annualized amount of change in our sales resulting from all new subscription-based contracts or
upsales on all existing subscription-based contracts, less write downs and cancellations, for the period reported. We recognize subscription revenues on a straight-
line basis over the life of the contract. Net bookings is considered a key indicator of future subscription revenue growth and is also used as a metric of salesforce
productivity by management and investors.

For the years ended December 31, 2018 , 2017 and 2016 , our contract renewal rate for existing CoStar subscription-based services on annual contracts was
approximately 90% , 91% and 90% respectively, and, therefore, our cancellation rate for those services was approximately 10% , 9% , and 10% , respectively. Our
contract renewal rate is a quantitative measurement that is typically closely correlated with our revenue results. As a result, management also believes that the rate
may  be  a  reliable  indicator  of  short-term  and  long-term  performance.  Our  trailing  twelve-month  contract  renewal  rate  may  decline  if,  among  other  reasons,
negative  economic  conditions  lead  to  greater  business  failures  and/or  consolidations  among  our  clients,  reductions  in  customer  spending,  or  decreases  in  our
customer base.

Development, Investments and Expansion

We  are  committed  to  supporting,  improving  and  enhancing  our  information,  news,  analytics  and  online  marketplace  solutions,  including  expanding  and
improving our offerings for property managers and renters. We expect to continue our software development efforts to improve existing services, introduce new
services, integrate and cross-sell services, and expand and develop supporting technologies for our research, sales and marketing organizations. We have been, and
plan to continue, integrating, further developing and cross-selling our services. To generate brand awareness and site traffic for our listing sites, we utilize a multi-
channel marketing campaign, including television and radio advertising, online/digital advertising, social media and out-of-home ads, and search engine marketing.
We expect to continue to invest in sales and marketing, consistent with historical levels, to promote our sites in 2019. As we continue to assess the success and
effectiveness of our marketing campaign, we will continue to work to determine the optimal level of marketing investment for our services for future periods.

Our key priorities for 2019 include:

•

Continuing to develop new, and improve existing, online rental property service offerings for the apartments industry. We plan to utilize acquired
platforms, including Cozy, along with our previously developed and newly developed technologies, to create a complete digital rental experience that
enables renters to apply for leases, for landlords to run tenant credit and background checks and for landlords and tenants to generate and enter into
leases and to make and process payments, all online through a single platform.

34

•

•

•

Continuing to develop and enhance CoStar Suite by making additional investments in analytical capabilities and developing products offerings with
new capabilities  focused  on  owners and lenders  of commercial  real  estate.  We also plan to invest  in integrating  the technology  and infrastructure
from other existing products into the CoStar Suite platform, including CoStar Real Estate Manager, in order to leverage data across our platforms and
provide customers with additional functionality. We plan to invest further in our daily newsletter for U.S. subscribers, including providing curated
content to our largest markets, and more personalized information.

Continuing  to  invest  in  the  LoopNet  marketplace  by  enhancing  the  content  on  the  site,  including  high-quality  imagery,  seeking  targeted
advertisements  and  adding  more  content  for  premium  listings,  to  better  meet  the  needs  of  a  broader  cross  section  of  the  commercial  real  estate
industry. Continuing to invest in our research operations to support continued growth of our information and analytics offerings. In furtherance of
both of these priorities, we plan to continue to generate awareness and promote usage of Listing Manager, an online tool that allows customers with
CoStar or LoopNet listings to update and manage their listings directly online. LoopNet users can also monitor listing performance, access lead and
prospect reports, and upgrade exposure of their listings. We expect the use of this tool to result in more updates made directly by brokers and owners
entering data directly into the self-service tool, which we believe will result in significant long-term cost savings and better quality data.

Continuing to invest in the growth of our international business. We plan to integrate Realla with our CoStar U.K. operations, including development
of a single point of data entry to allow our clients to simultaneously arrange to display their commercial real estate listings through the CoStar Suite
service offering and to also make them visible to prospective tenants and investors through Realla’s marketing portal.

We intend to continue to assess the need for additional investments in our business, in addition to the investments discussed above, in order to develop and
distribute  new  services  and  functionality  within  our  current  platform  or  expand  the  reach  of  our  current  service  offerings.  Any  future  product  development  or
expansion  of  services,  combination  and  coordination  of  services  or  elimination  of  services  or  corporate  expansion,  development  or  restructuring  efforts  could
reduce our profitability and increase our capital expenditures. Any new investments, changes to our service offerings or other unforeseen events could cause us to
experience reduced revenues or generate losses and negative cash flow from operations in the future. Any development efforts must comply with our credit facility,
which contains restrictive covenants that restrict our operations and use of our cash flow and may prevent us from taking certain actions that we believe could
increase our profitability or otherwise enhance our business.

For further discussion of our Company, strategy and products, see our business overview set forth in "Item 1. Business" in this Annual Report on Form 10-K.

Non-GAAP Financial Measures

We prepare and publicly release quarterly unaudited financial statements prepared in accordance with generally accepted accounting principles (“GAAP”). We
also  disclose  and  discuss  certain  non-GAAP  financial  measures  in  our  public  releases,  investor  conference  calls  and  filings  with  the  Securities  and  Exchange
Commission. The non-GAAP financial measures that we may disclose include net income before interest and other income (expense), loss on debt extinguishment,
income taxes, depreciation and amortization (“EBITDA”), adjusted EBITDA, adjusted EBITDA margin, non-GAAP net income and non-GAAP net income per
diluted share (also referred to as “non-GAAP EPS”). EBITDA is our net income before interest and other income (expense), loss on debt extinguishment, income
taxes, depreciation and amortization. We typically disclose EBITDA on a consolidated and an operating segment basis in our earnings releases, investor conference
calls and filings with the Securities and Exchange Commission. Adjusted EBITDA is different from EBITDA because we further adjust EBITDA for stock-based
compensation  expense,  acquisition-  and  integration-related  costs,  restructuring  costs  and  settlements  and  impairments  incurred  outside  our  ordinary  course  of
business.  Non-GAAP  net  income  and  non-GAAP  net  income  per  diluted  share  are  similarly  adjusted  for  stock-based  compensation  expense,  acquisition-  and
integration-related costs, restructuring costs, settlement and impairment costs incurred outside our ordinary course of business and loss on debt extinguishment as
well as amortization of acquired intangible assets and other related costs. From this figure, we then subtract an assumed provision for income taxes to arrive at non-
GAAP  net  income.  We  may  disclose  adjusted  EBITDA,  adjusted  EBITDA  margin,  non-GAAP  net  income  and  non-GAAP  net  income  per  diluted  share  on  a
consolidated basis in our earnings releases, investor conference calls and filings with the Securities and Exchange Commission. The non-GAAP financial measures
that we use may not be comparable to similarly titled measures reported by other companies. Also, in the future, we may disclose different non-GAAP financial
measures in order to help our investors meaningfully evaluate and compare our results of operations to our previously reported results of operations or to those of
other companies in our industry.

35

  
We view EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP net income per diluted share as operating performance measures and as such we
believe  that the most directly  comparable  GAAP financial  measure  is net income. In calculating  EBITDA, adjusted EBITDA, non-GAAP net income and non-
GAAP net income per diluted share, we exclude from net income the financial items that we believe should be separately identified to provide additional analysis
of  the  financial  components  of  the  day-to-day  operation  of  our  business.  We  have  outlined  below  the  type  and  scope  of  these  exclusions  and  the  material
limitations on the use of these non-GAAP financial measures as a result of these exclusions. EBITDA, adjusted EBITDA, non-GAAP net income and non-GAAP
net income per diluted share are not measurements of financial performance under GAAP and should not be considered as a measure of liquidity, as an alternative
to net income or as an indicator of any other measure of performance derived in accordance with GAAP. Investors and potential investors in our securities should
not rely  on EBITDA, adjusted  EBITDA, non-GAAP net income  and non-GAAP net income  per diluted share  as a substitute  for any GAAP financial  measure,
including net income. In addition, we urge investors and potential investors in our securities to carefully review the GAAP financial information included as part of
our  Annual  Reports  on Form  10-K and  Quarterly  Reports  on Form  10-Q that  are  filed  with  the  Securities  and  Exchange  Commission,  as  well  as  our  quarterly
earnings  releases,  and  compare  the  GAAP  financial  information  with  our  EBITDA,  adjusted  EBITDA,  non-GAAP  net  income  and  non-GAAP  net  income  per
diluted share.

EBITDA, adjusted EBITDA, adjusted EBITDA margin, non-GAAP net income and non-GAAP net income per diluted share may be used by management to
internally measure our operating and management performance and may be used by investors as supplemental financial measures to evaluate the performance of
our business. We believe that these non-GAAP measures, when viewed with our GAAP results and accompanying reconciliations, provide additional information
that  is  useful  to  understand  the  factors  and  trends  affecting  our  business.  We  have  spent  more  than  30  years  building  our  database  of  commercial  real  estate
information  and  expanding  our  markets  and  services  partially  through  acquisitions  of  complementary  businesses.  Due  to  the  expansion  of  our  information,
analytics and online marketplace services, which has included acquisitions, our net income has included significant charges for amortization of acquired intangible
assets, depreciation and other amortization, acquisition- and integration-related costs, restructuring costs, and loss on debt extinguishment. Adjusted EBITDA, non-
GAAP net income and non-GAAP net income per diluted share exclude these charges and provide meaningful information about the operating performance of our
business,  apart  from  charges  for  amortization  of  acquired  intangible  assets,  depreciation  and  other  amortization,  acquisition-  and  integration-related  costs,
restructuring costs; settlement and impairment costs incurred outside our ordinary course of business. We believe the disclosure of non-GAAP measures can help
investors meaningfully evaluate and compare our performance from quarter to quarter and from year to year. We also believe the non-GAAP measures we disclose
are  measures  of  our  ongoing  operating  performance  because  the  isolation  of  non-cash  charges,  such  as  amortization  and  depreciation,  and  other  items,  such  as
interest,  income  taxes,  stock-based  compensation  expenses,  acquisition-  and  integration-related  costs,  restructuring  costs;  loss  on  debt  extinguishment  and
settlement and impairment costs incurred outside our ordinary course of business, provides additional information about our cost structure, and, over time, helps
track our operating progress. In addition, investors, securities analysts and others have regularly relied on EBITDA and may rely on adjusted EBITDA, adjusted
EBITDA  margin,  non-GAAP  net  income  or  non-GAAP  net  income  per  diluted  share  to  provide  a  financial  measure  by  which  to  compare  our  operating
performance against that of other companies in our industry.

Set forth below are descriptions of financial items that have been excluded from net income to calculate EBITDA and the material limitations associated with

using this non-GAAP financial measure as compared to net income:

•

•

•

•

Amortization of acquired intangible assets in cost of revenues may be useful for investors to consider because it represents the diminishing value of any
acquired trade names and other intangible assets and the use of our acquired technology, which is one of the sources of information for our database of
commercial real estate information. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost
structure.

Amortization of acquired intangible assets in operating expenses may be useful for investors to consider because it represents the estimated attrition of our
acquired customer base. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost structure.

Depreciation  and  other  amortization  may  be  useful  for  investors  to  consider  because  they  generally  represent  the  wear  and  tear  on  our  property  and
equipment used in our operations. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost
structure.

The  amount  of  interest  and  other  income  and  expense  we  generate  may  be  useful  for  investors  to  consider  and  may  result  in  current  cash  inflows.
However,  we  do  not  consider  the  amount  of  interest  and  other  income  and  expense  to  be  a  representative  component  of  the  day-to-day  operating
performance of our business.

36

•

•

The  amount  of  loss  on  our  debt  extinguishment  may  be  useful  for  investors  to  consider  because  it  generally  represents  losses  from  the  early
extinguishment of debt. However, we do not consider the amount of the loss on debt extinguishment to be a representative component of the day-to-day
operating performance of our business.

Income tax expense may be useful for investors to consider because it generally represents the taxes which may be payable for the period and the change
in deferred income taxes during the period and may reduce the amount of funds otherwise available for use in our business. However, we do not consider
the amount of income tax expense to be a representative component of the day-to-day operating performance of our business.

Set  forth  below  are  descriptions  of  additional  financial  items  that  have  been  excluded  from  EBITDA  to  calculate  adjusted  EBITDA  and  the  material

limitations associated with using this non-GAAP financial measure as compared to net income:

•

•

•

•

Stock-based  compensation  expense  may  be  useful  for  investors  to  consider  because  it  represents  a  portion  of  the  compensation  of  our  employees  and
executives. Determining the fair value of the stock-based instruments involves a high degree of judgment and estimation and the expenses recorded may
bear little resemblance to the actual value realized upon the future exercise or termination of the related stock-based awards. Therefore, we believe it is
useful to exclude stock-based compensation in order to better understand the long-term performance of our core business.

The amount of acquisition- and integration- related costs incurred may be useful for investors to consider because they generally represent professional
service fees and direct expenses related to acquisitions. Because we do not acquire businesses on a predictable cycle we do not consider the amount of
acquisition- and integration- related costs to be a representative component of the day-to-day operating performance of our business.

The amount of settlement and impairment costs incurred outside of our ordinary course of business may be useful for investors to consider because they
generally represent gains or losses from the settlement of litigation matters or impairments on acquired intangible assets. We do not believe these charges
necessarily reflect the current and ongoing cash charges related to our operating cost structure.

The amount of restructuring costs incurred may be useful for investors to consider because they generally represent costs incurred in connection with a
change  in  a  contract  or  a  change  in  the  makeup  of  our  properties  or  personnel.  We  do  not  consider  the  amount  of  restructuring  related  costs  to  be  a
representative component of the day-to-day operating performance of our business.

The  financial  items  that  have  been  excluded  from  our  net  income  to  calculate  non-GAAP  net  income  and  non-GAAP  net  income  per  diluted  share  are
amortization of acquired intangible assets and other related costs, stock-based compensation, acquisition- and integration- related costs, restructuring and related
costs  and settlement  and  impairment  costs incurred  outside  our  ordinary  course  of  business.  These items  are  discussed  above with  respect  to  the calculation  of
adjusted  EBITDA  together  with  the  material  limitations  associated  with  using  this  non-GAAP  financial  measure  as  compared  to  net  income.  We  subtract  an
assumed provision for income taxes to calculate non-GAAP net income. In 2017 and 2016 , we assumed a 38% tax rate, which approximated our historical long-
term statutory corporate tax rate, excluding the impact of discrete items. In 2018 we assumed a 25% tax rate which reflects our full year 2018 statutory tax rate.
The decrease in our tax rate in 2018 is mainly due to the Tax Act which reduced the U.S. federal corporate income tax rate from 35% to 21% effective January 1,
2018.

Adjusted EBITDA margin represents adjusted EBITDA divided by revenues for the period.

Non-GAAP net income per diluted share is a non-GAAP financial measure that represents non-GAAP net income divided by the number of diluted shares

outstanding for the period used in the calculation of GAAP net income per diluted share.

Management compensates for the above-described limitations of using non-GAAP measures by using a non-GAAP measure only to supplement our GAAP

results and to provide additional information that is useful to understand the factors and trends affecting our business.

37

The  following  table  shows  our  net  income  reconciled  to  our  EBITDA  and  our  net  cash  flows  from  operating,  investing  and  financing  activities  for  the

indicated periods (in thousands):

Year Ended December 31,

2018

2017

2016

Net income

Amortization of acquired intangible assets in cost of revenues

Amortization of acquired intangible assets in operating expenses

Depreciation and other amortization

Interest and other income

Interest and other expense

Loss on debt extinguishment

Income tax expense

EBITDA

Net cash flows provided by (used in)

Operating activities

Investing activities

Financing activities

$

238,334   $

122,695   $

20,586  

30,881  

26,276  

(13,281)  

2,830  

—  

45,681  

19,707  

17,684  

26,252  

(4,044)  

9,014  

3,788  

42,363  

351,307   $

237,459   $

85,071

22,819

22,731

24,615

(1,773)

10,016

—

51,591

215,070

335,458   $

(448,001)   $

2,744   $

234,703   $

(72,267)   $

480,430   $

200,642

(23,259)

(30,563)

$

$

$

$

38

 
 
 
 
 
 
   
   
 
   
 
 
Consolidated Results of Operations

The  following  table  provides  our  selected  consolidated  results  of  operations  for  the  indicated  periods  (in  thousands  of  dollars  and  as  a  percentage  of  total

revenue):

Revenues                                                 

Cost of revenues                                                 

Gross profit                                                                          

Operating expenses:

Selling and marketing (excluding customer base amortization)

Software development                                              

General and administrative                                              

Customer base amortization                                              

Total operating expenses                                                 

Income from operations                                                 

Interest and other income                                  

Interest and other expense

Loss on debt extinguishment

Income before income taxes                                                 

Income tax expense

Net income                                     

Information and analytics

CoStar Suite (1)
Information services (1)

Online marketplaces
Multifamily (1)
Commercial property and land (1)

Total revenues

Year Ended December 31,

2018

2017

2016

$

1,191,832  

100 %   $

965,230  

100 %   $

837,630  

100 %

269,933  

921,899  

359,858  

100,937  

156,659  

30,881  

648,335  

273,564  

13,281  

(2,830)  

—  

284,015  

45,681  

23

77

30

8

13

3

54

23

1

—  

—  

24

4

220,403  

744,827  

318,362  

88,850  

146,128  

17,671  

571,011  

173,816  

4,044  

(9,014)  

(3,788)  

165,058  

42,363  

23

77

33

9

15

2

59

18

—  

(1)

—  

17

4

$

238,334  

20 %   $

122,695  

13 %   $

173,814  

663,816  

296,483  

76,400  

123,297  

22,731  

518,911  

144,905  

1,773  

(10,016)  

—  

136,662  

51,591  

85,071  

Year Ended December 31,

2018

2017

2016

$

545,195  

46%   $

463,185  

48%   $

408,456  

67,624  

405,795  

173,218  

6

34

14

72,618  

279,855  

149,572  

8

29

15

77,178  

224,835  

127,161  

$

1,191,832  

100%   $

965,230  

100%   $

837,630  

100%

21

79

35

9

15

3

62

17

—

(1)

—

16

6

10 %

49%

9

27

15

The following table provides our revenues by type of service (in thousands of dollars and as a percentage of total revenue):

__________________________
(1) For further discussion of our Company, strategy and products, see our business overview set forth in "Item 1. Business" in this Annual Report on Form 10-K.

39

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
 
 
 
   
   
   
   
   
 
 
 
 
 
   
   
   
   
   
Comparison of Year Ended December 31, 2018 and Year Ended December 31, 2017

The following table provides a comparison of our selected consolidated results of operations for the year ended December 31, 2018 and 2017 (in thousands of

dollars):

Revenues

CoStar Suite

Information services

Multifamily

Commercial property and land

Total revenues                                                 

Cost of revenues                                                 

Gross profit                                                                          

Operating expenses:

Selling and marketing (excluding customer base amortization)

Software development                                              

General and administrative                                              

Customer base amortization                                              

Total operating expenses                                                 

Income from operations                                                 

Interest and other income                                  

Interest and other expense

Loss on extinguishment

Income before income taxes                                                 

Income tax expense

Net income

__________________________

NM - Not meaningful

2018

2017

Increase
(Decrease) ($)  

Increase
(Decrease) (%)

$

545,195   $

463,185   $

67,624  

405,795  

173,218  

1,191,832  

269,933  

921,899  

359,858  

100,937  

156,659  

30,881  

648,335  

273,564  

13,281  

(2,830)  

—  

284,015  

45,681  

72,618  

279,855  

149,572  

965,230  

220,403  

744,827  

318,362  

88,850  

146,128  

17,671  

571,011  

173,816  

4,044  

(9,014)  

(3,788)  

165,058  

42,363  

82,010  

(4,994)  

125,940  

23,646  

226,602  

49,530  

177,072  

41,496  

12,087  

10,531  

13,210  

77,324  

99,748  

9,237  

(6,184)  

(3,788)  

118,957  

3,318  

18 %

(7)

45

16

23

22

24

13

14

7

75

14

57

228

(69)

NM

72

8

$

238,334   $

122,695   $

115,639  

94 %

Revenues
. Revenues increased to $1,192 million in 2018 , from $965 million in 2017 . The $227 million increase was primarily  attributable  to increased
revenues of approximately $82 million or  18%  from continued organic growth of CoStar Suite, as well as, conversion of our LoopNet customers to our CoStar
platform as a result of integration of the LoopNet and CoStar databases. Information services revenue decreased  $5 million  or  7%  primarily due to the continued
wind down of LoopNet information services, including Premium Searcher, resulting in a loss of $29 million of revenues, partially offset by a $22 million increase
in revenues from the continued growth of our CoStar Real Estate Manager offering. Multifamily revenue increased  $126 million  or  45% , driven by incremental
revenues  related  to  the  acquisition  of  ForRent.  Commercial  property  and  land  revenue  increased    $24 million  or    16% , due  to  growth  in  our  LoopNet  online
marketplace services of $12 million, as well as, growth in our land and businesses for sale services of $12 million.

Gross
Profit
. Gross profit increased to $922 million in 2018 , from $745 million in 2017 . The gross margin percentage remained relatively consistent as a

percentage of revenues at 77% for both 2018 and 2017 . Investment in research to further support our products and services led to an increase in cost of revenues
of  $50 million . The increase was primarily due to additional research personnel costs of $32 million, an increase of $7 million in direct costs partially due to the
ForRent and Cozy acquisitions and our Westside Rentals services, an increase in software licensing expense of $3 million and $2 million in occupancy related
costs in connection with our research office in Richmond, Virginia.

Selling 
and 
Marketing 
Expenses
 .  Selling  and  marketing  expenses  increased  to  $360  million  in  2018  ,  from  $318  million  in  2017  ,  and  decreased  as  a
percentage of revenues to 30% , compared to 33% in 2017 . The increase in the amount of selling and marketing expenses was due to a $14 million increase in
sales personnel costs, partially related to the acquisition of ForRent, which included additional salaries and retention costs. In addition, marketing related expenses
increased $21 million, primarily

40

 
 
 
 
   
   
   
 
 
 
   
 
 
   
   
   
 
   
   
   
due to increased search engine marketing costs due to the acquisition of ForRent. Sales conference and travel related costs also increased $4 million.

Software 
Development 
Expenses
 .  Software  development  expenses  increased  to  $101  million  in  2018  ,  from  $89  million  in  2017  ,  and  decreased  as  a
percentage of revenues to 8% in 2018 , compared to 9% in 2017 . The increase in the amount of software development expense was primarily due to a $16 million
increase  in  personnel  costs,  of  which  $6  million  was  due  to  the  acquisition  of  ForRent.  These  increases  were  partially  offset  by  a  $4  million  decrease  in
professional services and recruiting costs in 2018.

General
and
Administrative
Expenses
. General and administrative expenses increased to $157 million in 2018 , from $146 million in 2017 , and decreased as
a percentage of revenues to 13% in 2018 , compared to 15% 2017 . The increase in the amount of general and administrative expenses was primarily due to an
increase  in  administrative  personnel  costs  of  $9  million  to  support  the  ongoing  growth  of  the  business  and  a  $6  million  increase  in  software  licensing  costs,
partially offset by a $6 million decrease in professional services, primarily due to a reduction in legal costs of $9 million.

Customer
Base
Amortization
Expense.
Customer base amortization expense increased to $31 million in 2018 , from $18 million in 2017 , and increased as a
percentage of revenues to 3% in 2018 , compared to 2% in 2017 . The increase was primarily due to the ForRent acquisition, partially offset by lower amortization
of existing customer base intangible assets acquired in prior years due to applying an accelerated amortization methodology for a majority of those assets.

Interest
and
Other
Income.
Interest and other income increased to $13 million in 2018 , from $4 million in 2017 . The increase was primarily due to our higher

average cash and cash equivalent balance and interest rates in 2018 than in 2017.

Interest
and
Other
Expense.
Interest and other expense decreased to $3 million in 2018 , from $9 million in 2017 . The decrease was primarily due to the

repayment of outstanding debt in connection with entering into the amended and restated credit agreement (the ‘‘2017 Credit Agreement’’) in October 2017.

Loss
on
Extinguishment.
The loss on extinguishment recognized in 2017 was due to entering into the 2017 Credit Agreement, which amended and restated in

its entirety the existing credit agreement dated April 1, 2014, and resulted in a loss on debt extinguishment of approximately $4 million .

Income
Tax
Expense.
Income tax expense increased to $46 million in 2018 , from $42 million in 2017 . The effective tax rate was 16% in 2018 compared to
26% in 2017. This decrease was primarily due to the Tax Act, which reduced the federal corporate income tax rate effective January 1, 2018, from 35% to 21% and
excess tax benefits on share payments and state research and development tax credits.

Comparison of Business Segment Results for Year Ended December 31, 2018 and Year Ended December 31, 2017

We manage our business geographically in two operating segments, with the primary areas of measurement and decision-making being North America, which
includes the U.S. and Canada, and International, which includes the U.K., Spain, Germany and France. Management relies on an internal management reporting
process  that  provides  revenue  and  operating  segment  net  income  before  interest  and  other  income  (expense),  loss  on  debt  extinguishment,  income  taxes,
depreciation  and  amortization  (“EBITDA”).  Management  believes  that  operating  segment  EBITDA  is  an  appropriate  measure  for  evaluating  the  operational
performance  of  our  operating  segments.  EBITDA  is  used  by  management  to  internally  measure  operating  and  management  performance  and  to  evaluate  the
performance of the business. However, this measure should be considered in addition to, not as a substitute for or superior to, income from operations or other
measures of financial performance prepared in accordance with GAAP. 

Segment
Revenues
.  North  America  revenues  increased  to  $1,157  million  for  the  year  ended  December  31,  2018  ,  from  $934  million  for  the  year  ended
December  31,  2017  .  The  increase  in  North  America  revenues  was  primarily  due  to  a  $126  million  increase  in  Multifamily  revenues  driven  by  incremental
revenues related to the acquisition of ForRent, continued organic growth in CoStar Suite revenues of $79 million and an increase of  $24 million  in Commercial
property and land revenue due to growth in our LoopNet online marketplace services of $12 million, as well as, growth in our land and businesses for sale services
of $12 million. International revenues increased to $35 million for the year ended December 31, 2018 , from $31 million for the year ended December 31, 2017
. The increase in International revenues was primarily due to an increase in revenues from the further penetration of our subscription-based services, and to a lesser
extent, a positive impact from foreign currency fluctuations in 2018.

Segment 
EBITDA.
 North  America  EBITDA  increased  to  $358  million  for  the  year  ended  December  31,  2018  ,  from  $237  million  for  the  year  ended
December 31, 2017 . The increase in North America EBITDA was due primarily to an increase in revenues, partially offset by increases in personnel related costs
due to the ForRent acquisition and ongoing support of the business.

41

International EBITDA decreased to a loss of $7 million for the year ended December 31, 2018 , from $1 million profit for the year ended December 31, 2017 . The
decrease in International EBITDA was primarily due to the continued investment in our International research operations in the U.K., along with higher occupancy
related costs, additional travel and professional services costs.

42

Comparison of Year Ended December 31, 2017 and Year Ended December 31, 2016

The following table provides a comparison of our selected consolidated results of operations for the year ended December 31, 2017 and 2016 (in thousands of

dollars):

Revenues

CoStar Suite

Information services

Multifamily

Commercial property and land

Total revenues                                                 

Cost of revenues                                                 

Gross profit                                                                          

Operating expenses:

Selling and marketing (excluding customer base amortization)

Software development                                              

General and administrative                                              

Customer base amortization                                              

Total operating expenses                                                 

Income from operations                                                 

Interest and other income                                  

Interest and other expense

Loss on extinguishment

Income before income taxes                                                 

Income tax expense

Net income                                          

__________________________

NM - Not meaningful

2017

2016

Increase
(Decrease) ($)

Increase
(Decrease) (%)

$

463,185   $

408,456   $

72,618  

279,855  

149,572  

965,230  

220,403  

744,827  

318,362  

88,850  

146,128  

17,671  

571,011  

173,816  

4,044  

(9,014)  

(3,788)  

165,058  

42,363  

77,178  

224,835  

127,161  

837,630  

173,814  

663,816  

296,483  

76,400  

123,297  

22,731  

518,911  

144,905  

1,773  

(10,016)  

—  

136,662  

51,591  

$

122,695   $

85,071   $

54,729  

(4,560)  

55,020  

22,411  

127,600  

46,589  

81,011  

21,879  

12,450  

22,831  

(5,060)  

52,100  

28,911  

2,271  

(1,002)  

(3,788)  

28,396  

(9,228)  

37,624  

13 %

(6)

24

18

15

27

12

7

16

19

(22)

10

20

NM

(10)

NM

21

(18)

44 %

Revenues
. Revenues increased to $965 million in 2017, from $838 million in 2016. The $127 million increase was primarily attributable to increased revenues
of approximately $55 million or 13% from continued organic growth in CoStar Suite as well as a movement of our LoopNet customers onto our CoStar platform as
a  result  of  the  LoopNet  integration.  Information  services  decreased  $5  million  or  6%  primarily  due  to  continued  wind  down  of  LoopNet  Information  products
including Premium Searcher partially offset by increases in our CoStar Real Estate Manager offering. Multifamily year over year increases of $55 million or 24%
was  primarily  attributable  to  organic  growth  as  well  as  some  smaller  increases  for  several  acquisitions.  Commercial  property  and  land  revenue  increased  $22
million or 18% over 2016 primarily due to organic growth as well as an increase due to the Landwatch acquisition.

Gross
Profit
. Gross profit increased to $745 million in 2017, from $664 million in 2016. The gross margin percentage decreased to 77% in 2017, from 79% in
2016. Revenue growth led to an increase in costs of revenues of $38 million for additional research personnel costs, $5 million in occupancy related costs from our
new  research  office  in  Richmond,  partially  offset  by  a  decrease  in  the  amortization  of  intangible  assets  of  $4  million.  Gross  margins  are  impacted  by  the
amortization of certain intangible assets acquired through acquisitions.

Selling
and
Marketing
Expenses
. Selling and marketing expenses increased to $318 million in 2017, from $296 million in 2016, and decreased as a percentage
of revenues to 33% from 35%. The increase in the amount of selling and marketing expenses was primarily due to a $25 million increase in sales personnel costs
related to increased commission expense from higher sales in 2017, partially offset by a $2 million decrease in digital marketing costs.

43

 
 
 
 
 
   
   
   
 
   
   
   
 
   
   
   
 
   
   
   
Software 
Development 
Expenses
 .  Software  development  expenses  increased  to  $89  million  in  2017,  from  $76  million  in  2016,  and  remained  relatively
consistent as a percentage of revenues at 9% for both 2017 and 2016. The increase in the amount of software development expense was primarily due to a $14
million  increase  in  personnel  costs  to  support  enhancements  and  upgrades  to  our  services  and  integration  of  the  backend  systems  of  the  LoopNet  and  CoStar
databases.

General
and
Administrative
Expenses
. General and administrative expenses increased 19% to $146 million in 2017, from $123 million in 2016, and remained
relatively consistent as a percentage of revenues at 15% in 2017 and 2016. The increase in the amount of general and administrative expenses was primarily due to
legal  costs  related  to  litigation  of  approximately  $13  million,  an  increase  in  administrative  personnel  costs  of  $5  million  to  support  the  ongoing  growth  of  the
business, and a $3 million increase in charitable donations.

Customer
Base
Amortization
Expense.
Customer base amortization expense decreased to approximately $18 million in 2017, from $23 million in 2016, and
decreased as a percentage of revenues to 2% in 2017, compared to 3% in 2016. The decrease in the amount and percentage of customer base amortization expense
was primarily due to the accelerated amortization of acquired customer bases in 2016 as compared to 2017.

Interest 
and
Other
Income.
Interest  and  other  income  increased  to  approximately  $4  million  in  2017,  compared  to  approximately  $2  million  in  2016.  The
increase was primarily due to increased short term investments on a larger cash balance in 2017 than in 2016 mainly due to net proceeds of $834 million from the
equity offering in October 2017.

Interest
and
Other
Expense.
Interest and other expense remained relatively consistent at $9 million in 2017 compared to $10 million in 2016. The decrease
was primarily due to the repayment of outstanding debt in October 2017 in connection with the 2017 Credit Agreement, partially offset by higher interest rates on
outstanding debt in 2017 compared to 2016.

Loss
on
Extinguishment.
The loss on extinguishment was due to the restatement and amendment of the 2014 Credit Agreement as the 2017 Credit Agreement,

which resulted in a loss on debt extinguishment of approximately $4 million.

Income
Tax
Expense.
Income tax expense decreased to $42 million in 2017 compared to $52 million in 2016. Without the effect of discrete items, income tax
expense  would  have  increased  by  approximately  $12  million.  Discrete  items  resulted  in  a  reduction  in  tax  expense  of  approximately  $22  million  including  the
revaluation of the deferred tax liability at the lower federal statutory tax rate resulting in a $7 million benefit. We also recognized approximately $8 million benefit
in net research and development tax benefits related to the periods 2013-2017. Finally, we recognized $7 million benefit from the impact of the accounting rule
change in ASU 2016-09 that provided for recognizing excess tax benefits in income tax expense as compared to additional paid in capital, which was the treatment
prior to 2017.

Comparison of Business Segment Results for Year Ended December 31, 2017 and Year Ended December 31, 2016

We manage our business geographically in two operating segments, with the primary areas of measurement and decision-making being North America, which
includes the U.S. and Canada, and International, which includes the U.K., Spain, Germany and France. Management relies on an internal management reporting
process that provides revenue and operating segment EBITDA. Management believes that operating segment EBITDA is an appropriate measure for evaluating the
operational  performance  of  our  operating  segments.  EBITDA  is  used  by  management  to  internally  measure  operating  and  management  performance  and  to
evaluate the performance of the business. However, this measure should be considered in addition to, not as a substitute for or superior to, income from operations
or other measures of financial performance prepared in accordance with GAAP. 

Segment
Revenues
. North America revenues increased to $934 million for the year ended December 31, 2017, compared to $809 million for the year ended
December  31,  2016.  This  increase  in  North  America  revenues  was  primarily  due  to  increased  revenues  of  approximately  $55  million  from  our  Multifamily
products,  and  an  increase  of  $55  million  in  CoStar  Suite  from  the  continued  growth  of  our  subscription-based  services  due  to  successful  cross-selling  of  our
services  to  our  customers  in  existing  markets,  combined  with  continued  high  renewal  rates.  International  revenues  increased  to  $31  million  for  the  year  ended
December 31, 2017, compared to $28 million for the year ended December 31, 2016. This increase was primarily due to continued growth of our subscription-
based information services resulting from sales of CoStar Suite. 

Segment
EBITDA.
North America EBITDA increased to $237 million for the year ended December 31, 2017, compared to $211 million for the year ended
December 31, 2016. The increase in North America EBITDA was due primarily to an increase in revenues of $125 million primarily offset by increased personnel
costs from additional investments in our research operations and the opening of our Richmond research headquarters, as well as increased legal costs. International
EBITDA  decreased  to  $1  million  for  the  year  ended  December  31,  2017,  compared  to  $4  million  for  the  year  ended  December  31,  2016.  This  decrease  in
International

44

EBITDA  was  primarily  due  to  an  increase  in  personnel  costs  from  the  relocation  of  our  European  research  headquarters  from  Glasgow,  Scotland  to  London,
England and as a result of increased headcount from investments in our International research operations in Madrid, Spain and the U.K.

45

Consolidated Quarterly Results of Operations

The following tables  present  our unaudited  consolidated  results  of operations  on a quarterly  basis for the indicated  periods  (in thousands, except per share
amounts, and as a percentage of total revenues). These tables should be read in conjunction with the consolidated financial statements and related notes included in
this Annual Report on Form 10-K. The quarterly results of historical periods are not necessarily indicative of quarterly results for any future period.

Revenues

Cost of revenues

Gross
profit                                                                          

Operating expenses

Income from operations

Interest and other income

Interest and other expense

Loss on debt extinguishment

Income before income taxes

Income tax expense

Net income

2018

2017

Mar. 31  

Jun. 30

Sep. 30

  Dec. 31

  Mar. 31  

Jun. 30

Sep. 30

  Dec. 31

$ 273,718   $ 297,018   $ 305,525   $ 315,571   $ 226,553   $ 237,153   $ 247,533   $ 253,991

62,477  

67,136  

72,072  

68,248  

51,346  

55,273  

55,483  

58,301

211,241  

229,882  

233,453  

247,323  

175,207  

181,880  

192,050  

195,690

157,796  

186,108  

162,765  

141,666  

137,545  

153,997  

134,537  

144,932

53,445  

43,774  

70,688  

105,657  

37,662  

27,883  

57,513  

50,758

2,987  

(690)  

—  

2,652  

(728)  

—  

3,035  

(717)  

—  

4,607  

429  

605  

555  

(695)  

(2,686)  

(2,693)  

(2,901)  

2,455

(734)

—  

—  

—  

—  

(3,788)

55,742  

45,698  

73,006  

109,569  

35,405  

25,795  

55,167  

52,479

3,511  

1,863  

14,247  

26,060  

13,275  

3,611  

20,990  

4,487

$ 52,231   $ 43,835   $ 58,759   $

83,509   $

22,130   $

22,184   $

34,177   $

47,992

Net income per share — basic

Net income per share — diluted

$

$

1.46   $

1.22   $

1.63   $

2.31   $

0.69   $

0.68   $

1.05   $

1.44   $

1.20   $

1.61   $

2.29   $

0.68   $

0.68   $

1.04   $

1.24

1.22

Revenues

Cost of revenues

Gross
profit                                                                          

Operating expenses

Income from operations

Interest and other income

Interest and other expense

Loss on debt extinguishment

Income before income taxes

Income tax expense

2018

2017

Mar. 31  

Jun. 30

Sep. 30

  Dec. 31

  Mar. 31  

Jun. 30

Sep. 30

  Dec. 31

100 %  

100 %  

100 %  

100 %  

100 %  

100 %  

100 %  

100 %

23

77

57

20

1

—  

—  

21

1

23

77

63

14

1

—  

—  

15

1

24

76

54

22

1

—  

—  

23

5

22

78

46

32

1

—  

—  

33

8

23

77

60

17

23

77

65

12

22

78

55

23

—  

—  

—  

(1)

(1)

(1)

—  

—  

—  

16

6

11

2

22

8

23

77

58

19

1

—

(1)

19

2

Net income                                                      

20 %  

14 %  

18 %  

25 %  

10 %  

9 %  

14 %  

17 %

Liquidity and Capital Resources

Our principal sources of liquidity are cash and cash equivalents, cash from operations and the availability of funds from our revolving credit facility. Total
cash and cash equivalents  decreased to $1.1 billion at December  31, 2018  compared  to  cash  and  cash  equivalents  of  $1.2 billion at December  31, 2017  . The
decrease in  cash  and  cash  equivalents  for  the  year  ended  December  31, 2018  was  primarily  due  to  the  cash  paid,  net  of  cash  acquired  in  connection  with  the
acquisitions  of  ForRent,  Cozy  and  Realla  of  an  aggregate  of  $418  million,  as  well  as  cash  paid  for  purchases  of  property  and  equipment  of    $30 million  and
repurchases of restricted stock to satisfy employee tax withholding obligations upon vesting of restricted stock awards valued at approximately  $24 million . These
decreases were partially offset by proceeds from the exercise of employee stock options of approximately  $27 million  and cash generated from operations of 
$335 million .

Net cash provided by operating activities for the year ended December 31, 2018 was $335 million compared to $235 million for the year ended December 31,

2017 and $201 million for the year ended December 31, 2016 . The $100 million and $34 million

46

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
increase s from December 31, 2017 to December 31, 2018 and from December 31, 2016 to December 31, 2017 , respectively, are primarily due to higher income
from operations in both periods. Income from operations was partially offset by fluctuations in working capital.

Net cash used in investing activities for the year ended December 31, 2018 was $448 million compared to $72 million for the year ended December 31, 2017 .
The $376 million increase in investing activities in 2018 compared to 2017 was primarily due to approximately  $418 million  cash paid, net of cash acquired, to
acquire ForRent, Cozy and Realla during 2018 , compared to $48 million cash paid to acquire Westside Rentals, LandWatch and The Screening Pros during 2017 .
During 2018 , we incurred capital expenditures of approximately $30 million compared to approximately $24 million during 2017 .

Net cash used in investing activities for the year ended  December 31, 2017  was   $72 million  compared to  $23 million  for the year ended   December 31,
2016  .  The  $49  million  increase  in  investing  activities  in  2017  compared  to  2016  was  primarily  due  to  $48  million  cash  paid  to  acquire  Westside  Rentals,
LandWatch and The Screening Pros during 2017 . During 2017, we incurred capital expenditures of approximately   $24 million  primarily related to computer
equipment and leasehold improvements for build out of sales office space.

Net cash provided by financing activities for the year ended December 31, 2018 was $3 million compared to net cash provided by financing activities of $480
million for the year ended December 31, 2017 and $31 million in December 31, 2016 . This $477 million decrease in financing activities in 2018 compared to 2017
and $449 million increase in financing activities in 2017 compared to 2016 was primarily due to $834 million in net proceeds from our equity offering, partially
offset by an increase in debt repayments of $325 million in 2017.

Our future capital requirements will depend on many factors, including, among others, our operating results, expansion and integration efforts, and our level of
acquisition activity or other strategic transactions. To date, we have grown in part by acquiring other companies, and we expect to continue to make acquisitions.
Any future acquisitions may vary in size and could be material to our current operations. We may use cash, stock, debt or other means of funding to make any
future acquisitions.  

Based on current plans, we believe that our available cash combined with positive cash flow provided by operating activities should be sufficient to fund our

operations for at least the next 12 months.

Contractual 
Obligations
 .  The  following  table  summarizes  our  principal  contractual  obligations  at  December  31, 2018  and  the  effect  such  obligations  are

expected to have on our liquidity and cash flows in future periods (in thousands):

Operating leases
Purchase obligations (1)  

Total contractual principal cash obligations

__________________________

Total

2019

2020-2021

2022-2023

Thereafter

$

$

169,078   $

30,485   $

56,676   $

50,149   $

12,690  

7,178  

5,477  

35  

181,768   $

37,663   $

62,153   $

50,184   $

31,768

—

31,768

(1) Amounts do not include (i) contracts with terms of twelve months or less, (ii) multi-year contracts that may be terminated by a third-party or us, or (iii) employment agreements. Amounts do
not include income taxes payable of $17 million due to uncertainty regarding the timing of future cash payments.

47

 
 
 
 
 
 
   
   
   
   
Critical Accounting Policies

The  preparation  of  financial  statements  and  related  disclosures  in  conformity  with  U.S.  generally  accepted  accounting  principles  (“GAAP”)  requires
management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the
date of the financial statements and revenues and expenses during the period reported. The following accounting policies involve a “critical accounting estimate”
because  they  are  particularly  dependent  on  estimates  and  assumptions  made  by  management  about  matters  that  are  highly  uncertain  at  the  time  the  accounting
estimates  are  made.  In  addition,  while  we  have  used  our  best  estimates  based  on  facts  and  circumstances  available  to  us  at  the  time,  different  acceptable
assumptions would yield different results. Changes in the accounting estimates are reasonably likely to occur from period to period, which may have a material
impact on the presentation of our financial condition and results of operations. We review these estimates and assumptions periodically and reflect the effects of
revisions in the period that they are determined to be necessary. We consider policies relating to the following matters to be critical accounting policies:

•
•
•
•

Long-lived assets, intangible assets and goodwill
Revenue recognition
Income taxes
Business combinations

With respect to our accounting policy for long-lived assets, intangible assets and goodwill, we further supplement in Note 2 of the Notes to the Consolidated

Financial Statements included in this Annual Report on Form 10-K with the following:

We assess the impairment of long-lived assets, identifiable intangibles and goodwill whenever events or changes in circumstances indicate that the carrying
value may not be recoverable. Judgments made by management relate to the expected useful lives of long-lived assets and our ability to recover the carrying value
of such assets. The accuracy of these judgments may be adversely affected by several factors, including the factors listed below:

•
•
•
•

Significant underperformance relative to historical or projected future operating results;
Significant changes in the manner of our use of the acquired assets or the strategy for our overall business;
Significant negative industry or economic trends; or
Significant decline in our market capitalization relative to net book value for a sustained period.

When we determine that the carrying value of long-lived and identifiable intangible assets may not be recovered based upon the existence of one or more of

the above indicators, we test for impairment.

Goodwill and identifiable intangible assets that are not subject to amortization are tested annually for impairment by each reporting unit on October 1 of each

year and are also tested for impairment more frequently based upon the existence of one or more of the above indicators. 

Goodwill represents the excess of costs over the fair value of assets of acquired businesses. Goodwill is not amortized, but instead tested for impairment at
least  annually  by  each  reporting  unit.  The  Company  may  first  assess  qualitative  factors  to  evaluate  whether  it  is  more  likely  than  not  that  the  fair  value  of  a
reporting unit is less than its carrying amount or elect to bypass such assessment. If it is determined that it is more likely than not that the fair value of a reporting
unit  is  less  than  its  carrying  value,  or  the  Company  elects  to  bypass  such  assessment,  the  Company  then  determines  the  fair  value  of  each  reporting  unit.  We
estimate the fair value of each reporting unit based on a projected discounted cash flow model that includes significant assumptions and estimates including our
discount rate, growth rate and future financial performance. Assumptions about the discount rate are based on a weighted average cost of capital for comparable
companies.  Assumptions  about  the  growth  rate  and  future  financial  performance  of  a  reporting  unit  are  based  on  our  forecasts,  business  plans,  economic
projections and anticipated future cash flows. These assumptions are subject to change from period to period and could be adversely impacted by the uncertainty
surrounding global market conditions, commercial real estate conditions and the competitive environment in which we operate. Changes in these or other factors
could negatively affect our reporting units' fair value and potentially result in impairment charges. Such impairment charges could have an adverse effect on our
results of operations.

The fair value of each reporting unit is compared to the carrying amount of the reporting unit. If the carrying value of the reporting unit exceeds the fair value,
then an impairment loss is recognized for the difference. We estimate the fair value of our reporting units based on a projected discounted cash flow method using
a discount rate determined by our management to be commensurate with the risk in our current business model. As of October 1, 2017, the date of our most recent
impairment analysis, the estimated fair value of each of our reporting units substantially exceeded the carrying value of our reporting units. There have been no
events  or  changes  in  circumstances  as  a  result  of  our  qualitative  impairment  analysis  on  October  1,  2018  ,  that  would  indicate  that  the  carrying  value  of  each
reporting unit may not be recoverable.

48

For an in depth discussion of each of our significant accounting policies, including our critical accounting policies and further information regarding estimates
and assumptions involved in their application,  see Note 2 to the accompanying consolidated  financial  statements included in "Item 8. Financial Statements  and
Supplementary Data” in this Annual Report on Form 10-K.

Recent Accounting Pronouncements

See  Note  2  of  the  Notes  to  Consolidated  Financial  Statements  included  in  this  Annual  Report  on  Form  10-K  for  information  on  recent  accounting

pronouncements, including the expected dates of adoption.

Item 7A.

Quantitative and Qualitative Disclosures About Market Risk

We provide information, analytics and online marketplace services to the commercial real estate and related business community in the U.S., the U.K., and
parts of Canada, Spain, Germany and France. Our functional currency for our operations in the U.K., Canada, Spain, Germany and France is the local currency. As
such, fluctuations in the British Pound, Canadian dollar and Euro may have an impact on our business, results of operations and financial position. For the year
ended December  31,  2018  ,  revenues  denominated  in  foreign  currencies  was  approximately  3% of  total  revenue.  For  the  year  ended  December  31, 2018  , our
revenues would have decreased by approximately $3 million if the U.S. dollar exchange rate used strengthened by 10%. For the year ended December 31, 2018 ,
our revenues would have increased by approximately $3 million if the U.S. dollar exchange rate used weakened by 10%. In addition, we have assets and liabilities
denominated in foreign currencies. We currently do not use financial instruments to hedge our exposure to exchange rate fluctuations with respect to our foreign
subsidiaries. We may seek to enter into hedging transactions in the future to reduce our exposure to exchange rate fluctuations, but we may be unable to enter into
hedging transactions successfully, on acceptable terms or at all. As of December 31, 2018 , accumulated other comprehensive loss included a loss from foreign
currency translation adjustments of approximately $11 million .

We do not have material exposure to market risks associated with changes in interest rates related to cash equivalent securities held as of December 31, 2018
. As of December 31, 2018 , we had $1.1 billion of cash and cash equivalents. If there is an increase or decrease in interest rates, there will be a corresponding
increase or decrease in the amount of interest earned on our cash and cash equivalents.

Included within our short-term and long-term investments are investments in mostly AAA-rated student loan ARS. These securities are primarily securities
supported by guarantees from the FFELP of the U.S. Department of Education. As of December 31, 2018 , $11 million of our investments in ARS failed to settle at
auction. As a result, we may not be able to sell these investments at par value until a future auction on these investments is successful. In the event we need to
immediately liquidate these investments, we may have to locate a buyer outside the auction process, who may be unwilling to purchase the investments at par,
resulting in a loss. If the issuers are unable to successfully close future auctions and/or their credit ratings deteriorate, we may be required to adjust the carrying
value  of  these  investments  as  a  temporary  impairment  and  recognize  a  greater  unrealized  loss  in  accumulated  other  comprehensive  loss  or  as  an  other-than-
temporary impairment charge to earnings. Based on our ability to access our cash and cash equivalents, and our expected operating cash flows, we do not anticipate
having to sell these securities below par value in order to operate our business in the foreseeable future. See Notes 5 and 6 to the Notes to Consolidated Financial
Statements included in this Annual Report on Form 10-K for further discussion.

We  had  approximately  $2  billion  in  intangible  assets  as  of  December  31,  2018  .  As  of  December  31,  2018  ,  we  believe  our  intangible  assets  will  be
recoverable, however, changes in the economy, the business in which we operate and our own relative performance could change the assumptions used to evaluate
intangible asset recoverability. In the event that we determine that an asset has been impaired, we would recognize an impairment charge equal to the amount by
which  the  carrying  amount  of  the  assets  exceeds  the  fair  value  of  the  asset.  We  continue  to  monitor  these  assumptions  and  their  effect  on  the  estimated
recoverability of our intangible assets.

49

Item 8.

Financial Statements and Supplementary Data

Financial  Statements  meeting  the  requirements  of  Regulation  S-X  are  set  forth  beginning  at  page  F-1.  Supplementary  data  is  set  forth  in  “Management’s
Discussion and Analysis of Financial Condition and Results of Operations” under the caption “Consolidated Results of Operations” and “Consolidated Quarterly
Results of Operations.”

Item 9.

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A.

Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports filed or submitted under the
Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission’s rules and forms,
and  that  such  information  is  accumulated  and  communicated  to  our  management,  including  our  Chief  Executive  Officer  and  Chief  Financial  Officer,  as
appropriate,  to  allow  for  timely  decisions  regarding  required  disclosure.  In  designing  and  evaluating  the  disclosure  controls  and  procedures,  management
recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control
objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

As of December 31, 2018 , we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive
Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures. Based on the foregoing, our
Chief  Executive  Officer  and  Chief  Financial  Officer  concluded  that  our  disclosure  controls  and  procedures  were  effective  and  were  operating  at  a  reasonable
assurance level.

During 2018, we continued to implement a new financial system that is designed to improve the efficiency and effectiveness of our operational and financial
accounting processes. This implementation is expected to continue through 2019. Consistent with any process change that we implement, the design of the internal
controls has and will continue to be evaluated for effectiveness as part of our overall assessment of the effectiveness of our disclosure controls and procedures. We
expect that the implementation of this system will improve our internal controls over financial reporting.

Other than the implementation of a new financial system noted above, there have been no changes in our internal control over financial reporting during our

most recent fiscal year that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management’s Report on Internal Control over Financial Reporting

Management  of  CoStar  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting  and  for  the  assessment  of  the
effectiveness  of  internal  control  over  financial  reporting.  As  defined  by  the  Securities  and  Exchange  Commission,  internal  control  over  financial  reporting  is  a
process designed by, or supervised by, the Company’s principal executive and principal financial officers, to provide reasonable assurance regarding the reliability
of financial reporting and the preparation of financial statements in accordance with GAAP.

The Company’s internal control over financial reporting is supported by written 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  Company’s  assets;  (2)  provide  reasonable  assurance  that  transactions  are
recorded as necessary to permit preparation of financial statements in accordance with GAAP, and that receipts and expenditures of the Company are being made
only in accordance with authorizations of the Company’s management and directors; 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.  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.

In  connection  with  the  preparation  of  the  Company's  annual  financial  statements,  management  of  the  Company  has  undertaken  an  assessment  of  the
effectiveness  of the Company’s  internal  control  over  financial  reporting  as of  December 31, 2018 based on criteria  established  in Internal  Control – Integrated
Framework  (2013  framework)  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission  (“the  COSO  Framework”).  Management's
assessment included an evaluation of the

50

 
design  of  the  Company's  internal  control  over  financial  reporting  and  testing  of  the  operational  effectiveness  of  the  Company's  internal  control  over  financial
reporting.

Based on this assessment, management has concluded that the Company's internal control over financial reporting was effective as of December 31, 2018 .

Ernst & Young LLP, the independent registered public accounting firm that audited the Company's financial statements included in this report, has issued an

attestation report on the effectiveness of internal control over financial reporting, a copy of which is included in this Annual Report on Form 10-K.

On February 21, 2018, we completed the acquisition of ForRent. On October 12, 2018, we completed the acquisition of Realla Ltd. On November 8, 2018, we
completed the acquisition of Cozy Services, Ltd. As permitted by the Securities and Exchange Commission, we have elected to exclude the internal controls of
these acquisitions that have not been integrated into our existing processes and controls from our assessment of the effectiveness of internal control over financial
reporting as of December 31, 2018. The excluded aggregate financial position of ForRent, Realla Ltd. and Cozy Ltd. represented less than 1% of our total assets as
of December 31, 2018, and less than 4% of our revenues for the year then ended. We will include the internal controls of ForRent, Realla Ltd. and Cozy Services,
Ltd. in our assessment of the effectiveness of our internal control over financial reporting as of December 31, 2019.

Item 9B.

Other Information.

None.

Item 10.

Directors, Executive Officers and Corporate Governance

PART III

CoStar has adopted a Code of Conduct for its directors. In addition, CoStar has adopted a separate Code of Conduct for its officers and employees, including
its principal executive, financial and accounting officers, or persons performing similar functions. Copies of each of these codes may be found in the “Investors”
section  of  the  Company’s  website  at  http://www.costargroup.com/investors/governance.  We  intend  to  disclose  future  amendments  to  certain  provisions  of  our
Codes, or waivers of such provisions granted to executive officers and directors, as required by SEC rules on the website within four business days following the
date of such amendment or waiver.

The remaining information required by this Item is incorporated by reference to our Proxy Statement for our 2019 annual meeting of stockholders.

Item 11.

Executive Compensation

The information required by this Item is incorporated by reference to our Proxy Statement for our 2019 annual meeting of stockholders.

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 our Proxy Statement for our 2019 annual meeting of stockholders.

Item 13.

Certain Relationships and Related Transactions, and Director Independence

The information required by this Item is incorporated by reference to our Proxy Statement for our 2019 annual meeting of stockholders.

Item 14.

Principal Accountant Fees and Services

The information required by this Item is incorporated by reference to our Proxy Statement for our 2019 annual meeting of stockholders.

51

Item 15.

Exhibits and Financial Statement Schedules

PART IV

(a)(1) The following financial statements are filed as a part of this report: CoStar Group, Inc. Consolidated Financial Statements.

(a)(2) Financial statement schedules:

Schedule II – Valuation and Qualifying Accounts

The table below details the activity of the allowance for doubtful accounts and sales credits (1) for the years ended December 31, 2018 , 2017 , and 2016 (in

thousands):

Year ended December 31, 2016

Year ended December 31, 2017

Year ended December 31, 2018

Balance at
Beginning
of Year

Charged to
Expense

Reductions

Balance at
End of Year

  $

  $

  $

7,478   $

6,344   $

6,469   $

7,358   $

5,690   $

6,542   $

8,492   $

5,565   $

7,302   $

6,344

6,469

5,709

__________________________
(1)   Additions to the allowance for doubtful accounts are charged to bad debt expense. Additions to the allowance for sales credits are charged against revenues.

Additional financial statement schedules are omitted because they are not applicable or not required or because the required information is incorporated herein

by reference or included in the financial statements or related notes included elsewhere in this report.

(a)(3) The documents required to be filed as exhibits to this Report under Item 601 of Regulation S-K are listed as follows:

Exhibits

Exhibit No.  

Description

3.1

3.2

4.1

* 10.1

* 10.2

* 10.3

* 10.4

* 10.5

* 10.6

* 10.7

Third Amended and Restated Certificate of Incorporation (Incorporated by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K
filed with the Commission on June 6, 2013).

Third Amended  and Restated  By-Laws (Incorporated  by reference  to Exhibit  3.1  to the Registrant’s  Current  Report on Form  8-K filed  with the
Commission on September 24, 2013).

Specimen Common Stock Certificate (Incorporated by reference to Exhibit 4.1 to the Registration Statement on Form S-4 of the Registrant (Reg.
No. 333-174214) filed with the Commission on June 3, 2011).

CoStar Group, Inc. 2016 Stock Incentive Plan (Incorporated by reference to Exhibit 4.4 to the Registration Statement on Form S-8 of the Registrant
(Reg. No. 333-212278) filed with the Commission on June 28, 2016).

First Amendment to the CoStar Group, Inc. 2016 Stock Incentive Plan (Incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly
Report on Form 10-Q filed April 25, 2018).

CoStar Group, Inc. 2007 Stock Incentive Plan, as amended (Incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-
K filed June 8, 2012).

CoStar Group, Inc. 2007 Stock Incentive Plan French Sub-Plan (Incorporated by reference to Exhibit 10.3 to the Registrant’s Report on Form 10-K
filed February 29, 2008).

Form of CoStar Group, Inc. 2016 Plan Restricted Stock Grant Agreement between the Registrant and certain of its officers, directors and employees
(Incorporated by reference to Exhibit 10.3 to the Registrant’s Quarterly Report on Form 10-Q filed July 28, 2016).

Form of CoStar Group, Inc. 2016 Plan Restricted Stock Grant Agreement for Service Awards between the Registrant and certain of its officers and
employees (Incorporated by reference to Exhibit 10.4 to the Registrant’s Quarterly Report on Form 10-Q filed July 28, 2016).

Form of CoStar Group, Inc. 2016 Plan Restricted Stock Unit Grant Agreement between the Registrant and certain of its officers and employees
(Incorporated by reference to Exhibit 10.5 to the Registrant’s Quarterly Report on Form 10-Q filed July 28, 2016).

52

 
 
 
 
 
 
   
   
   
   
 
   
 
 
 
 
 
 
 
 
 
 
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

* 10.24

* 10.25

10.26

10.27

10.28

Form of CoStar Group, Inc. 2016 Plan Incentive Stock Option Grant Agreement between the Registrant and certain of its officers and employees
(Incorporated by reference to Exhibit 10.6 to the Registrant’s Quarterly Report on Form 10-Q filed July 28, 2016).

Form of CoStar Group, Inc. 2016 Plan Incentive Stock Option Grant Agreement between the Registrant and Andrew C. Florance (Incorporated by
reference to Exhibit 10.7 to the Registrant’s Quarterly Report on Form 10-Q filed July 28, 2016).

Form of CoStar Group, Inc. 2016 Plan Nonqualified Stock Option Grant Agreement between the Registrant and certain of its officers, directors and
employees (Incorporated by reference to Exhibit 10.8 to the Registrant’s Quarterly Report on Form 10-Q filed July 28, 2016).

Form of CoStar Group, Inc. 2016 Plan Nonqualified Stock Option Grant Agreement between the Registrant and Andrew C. Florance (Incorporated
by reference to Exhibit 10.9 to the Registrant’s Quarterly Report on Form 10-Q filed July 28, 2016).

Form of 2007 Plan Restricted Stock Grant Agreement between the Registrant and certain of its officers, directors and employees (Incorporated by
reference to Exhibit 99.1 to the Registrant’s Report on Form 8-K filed June 22, 2007).

Form of 2007 Plan Restricted Stock Unit Agreement between the Registrant and certain of its officers and employees (Incorporated by reference to
Exhibit 10.8 to the Registrant's Report on Form 10-K filed February 20, 2014).

Form  of  2007  Plan  Incentive  Stock  Option  Grant  Agreement  between  the  Registrant  and  certain  of  its  officers  and  employees  (Incorporated  by
reference to Exhibit 10.8 to the Registrant’s Report on Form 10-K filed February 24, 2009).

Form of 2007 Plan Incentive Stock Option Grant Agreement between the Registrant and Andrew C. Florance (Incorporated by reference to Exhibit
10.9 to the Registrant’s Report on Form 10-K filed February 24, 2009).

Form of 2007 Plan Nonqualified Stock Option Grant Agreement between the Registrant and certain of its officers and employees (Incorporated by
reference to Exhibit 10.10 to the Registrant’s Report on Form 10-K filed February 24, 2009).

Form of 2007 Plan Nonqualified Stock Option Grant Agreement between the Registrant and certain of its directors (Incorporated by reference to
Exhibit 10.11 to the Registrant’s Report on Form 10-K filed February 24, 2009).

Form  of  2007  Plan  Nonqualified  Stock  Option  Grant  Agreement  between  the  Registrant  and  Andrew  C.  Florance  (Incorporated  by  reference  to
Exhibit 10.12 to the Registrant’s Report on Form 10-K filed February 24, 2009).

Form of 2007 Plan French Sub-Plan Restricted Stock Agreement between the Registrant and certain of its employees (Incorporated by reference to
Exhibit 10.10 to the Registrant’s Report on Form 10-K filed February 29, 2008).

CoStar Group, Inc. 2016 Cash Incentive Plan (Incorporated by reference to Exhibit 10.2 to the Registrant’s Quarterly Report on Form 10-Q filed
July 28, 2016).

CoStar Group, Inc. Amended and Restated Employee Stock Purchase Plan (Incorporated by reference to Exhibit 4.4 to the Registrant’s Registration
Statement on Form S-8 filed with the Commission on September 14, 2015).

CoStar Group, Inc. Management Stock Purchase Plan (Incorporated by reference to Exhibit 10.21 to the Registrant’s Report on Form 10-K filed
February 23, 2018).

Summary of Non-Employee Director Compensation (Incorporated by reference to Exhibit 10.1 to the Registrant's Report on Form 10-Q filed on
October 24, 2013).

Employment Agreement for Andrew C. Florance (Incorporated by reference to Exhibit 10.2 to Amendment No. 1 to the Registration Statement on
Form S-1 of the Registrant (Reg. No. 333-47953) filed with the Commission on April 27, 1998).

First  Amendment  to  Andrew  C.  Florance  Employment  Agreement,  effective  January  1,  2009  (Incorporated  by  reference  to  Exhibit  10.16  to  the
Registrant’s Report on Form 10-K filed February 24, 2009).

Form of Indemnification Agreement between the Registrant and each of its officers and directors (Incorporated by reference to Exhibit 10.1 to the
Registrant’s Report on Form 10-Q filed on May 7, 2004).

Deed of Office Lease by and between GLL L-Street 1331, LLC and CoStar Realty Information, Inc., dated February 18, 2011, and made effective
as of June 1, 2010 (Incorporated by reference to Exhibit 10.1 to the Registrant’s Report on form 10-Q filed on April 29, 2011).

Securities  Purchase  Agreement,  dated  as  of  September  11,  2017,  among  CoStar  Realty  Information,  Inc.,  CoStar  Group,  Inc.,  LTM  Company
Dominion,  LLC,  Dominion  Enterprises,  and  Landmark  Media  Enterprises,  LLC  (Incorporated  by  reference  to  Exhibit  10.1  to  the  Registrant’s
Current Report on Form 8-K filed with the Commission on September 13, 2017).

53

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit No.  

10.29

Amendment and Restatement Agreement, dated as of October 19, 2017, by and among CoStar Group, Inc., CoStar Realty Information, Inc., the
Lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent (Incorporated by referenced to Exhibit 10.1 to the Registrant’s
Current Report on Form 8-K filed with the Commission on October 25, 2017).

Description

21.1

23.1

31.1

31.2

32.1

32.2

101

  Subsidiaries of the Registrant (filed herewith).

  Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm (filed herewith).

  Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).

  Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).

Certification of Principal Executive Officer pursuant to 18 U.S.C. Sec. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
(filed herewith).

Certification of Principal Financial Officer pursuant to 18 U.S.C. Sec. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
(filed herewith).

The  following  materials  from  CoStar  Group,  Inc.’s  Annual  Report  on  Form  10-K  for  the  year  ended  December  31,  2018,  formatted  in  XBRL
(eXtensible  Business Reporting Language):   (i)  Consolidated Statements  of Operations for the years ended December  31, 2018, 2017 and 2016,
respectively;  (ii)  Consolidated  Statements  of  Comprehensive  Income  for  the  years  ended  December  31,  2018,  2017  and  2016,  respectively;  (iii)
Consolidated  Balance  Sheets  at  December  31,  2018  and  December  31,  2017,  respectively;  (iv)  Consolidated  Statements  of  Changes  in
Stockholders’  Equity  for  the  years  ended  December  31,  2018,  2017  and  2016,  respectively;  (v)  Consolidated  Statements  of  Cash  Flows  for  the
years ended December 31, 2018, 2017 and 2016, respectively; (vi) Notes to the Consolidated Financial Statements that have been detail tagged; and
(vii) Schedule II – Valuation and Qualifying Accounts (submitted electronically with this report).

* Management Contract or Compensatory Plan or Arrangement.

54

 
 
 
 
Item 16.      Form 10-K Summary

None.

55

Pursuant to the requirements of Section 13 of the Securities Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by

the undersigned, thereunto duly authorized, in the City of Washington, District of Columbia, on the 28 th day of February 2019 .

SIGNATURES

COSTAR GROUP, INC.

By:

/s/ Andrew C. Florance

Andrew C. Florance

President and Chief Executive Officer

KNOW ALL PERSONS BY THESE PRESENTS, that each individual whose signature appears below constitutes and appoints Andrew C. Florance and Scott
T. Wheeler, and each of them individually, as their true and lawful attorneys-in-fact and agents, with full power of substitution, for him and in his name, place and
stead, in any and all capacities, to sign any and all amendments to this report, and to file the same, with all exhibits thereto and to all 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 requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he might or could do in
person, herein by ratifying and confirming all that said attorneys-in-fact and agents or any of them, or his or their substitute or substitutes, may lawfully do or cause
to be done by virtue hereof.

56

 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of the Securities Act of 1934, as amended, this report has been signed by the following persons on behalf of the registrant and in

the capacities and on the dates indicated.

Signature

Capacity

Date

/s/ Michael R. Klein

Michael R. Klein

/s/ Andrew C. Florance

Andrew C. Florance

/s/ Scott T. Wheeler

Scott T. Wheeler

/s/ Michael J. Glosserman

Michael J. Glosserman

/s/ Warren H. Haber

Warren H. Haber

/s/ John W. Hill

John W. Hill

/s/ Laura Cox Kaplan

Laura Cox Kaplan

/s/ Christopher J. Nassetta

Christopher J. Nassetta

/s/ David J. Steinberg

David J. Steinberg

  Chairman of the Board

  February 28, 2019

  Chief Executive Officer and

  President and a Director

  (Principal Executive Officer)

  February 28, 2019

  Chief Financial Officer

  February 28, 2019

  (Principal Financial and Accounting Officer)

  Director

  Director

  Director

  Director

  Director

  Director

57

  February 28, 2019

  February 26, 2019

  February 28, 2019

  February 28, 2019

  February 25, 2019

  February 25, 2019

 
 
 
 
   
   
 
   
   
   
   
 
   
   
   
 
   
 
   
   
   
 
   
   
   
   
 
   
   
   
   
 
   
   
   
   
 
   
   
   
   
 
   
   
   
   
 
   
   
   
   
COSTAR GROUP, INC.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Reports of Independent Registered Public Accounting Firm                                                                                                                              

Consolidated Statements of Operations

Consolidated Statements of Comprehensive Income

Consolidated Balance Sheets                          

Consolidated Statements of Changes in Stockholders’ Equity

Consolidated Statements of Cash Flows

Notes to Consolidated Financial Statements                                                                                                                              

F-1

F-2

F-5

F-6

F-7

F-8

F-9

F-11

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of CoStar Group, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of CoStar Group, Inc. (the Company) as of December 31, 2018 and 2017, and the related
consolidated statements of operations, comprehensive income (loss), stockholders' equity and cash flows for each of the three years in the period ended December
31, 2018, and the related notes and the financial statement schedule listed in the Index at Item 15(a)(2) (collectively referred to as the “financial statements”). In
our opinion, the financial statements present fairly, in all material respects, the consolidated financial position of the Company at December 31, 2018 and 2017,
and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2018, 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, 2018, 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 28, 2019 expressed an unqualified opinion thereon.

Adoption of ASU No. 2014-09

As discussed in Note 2 to the consolidated financial statements, the Company changed its method for recognizing revenue in 2018 due to the adoption of
Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606), and the related amendments.

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 1994.

Tysons, Virginia

February 28, 2019

F-2

 
Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of CoStar Group, Inc.

Opinion on Internal Control over Financial Reporting

We have audited CoStar Group, Inc.’s internal control over financial reporting as of December 31, 2018, 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, CoStar
Group, Inc. (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018, based on the COSO
criteria.

As indicated in the accompanying Management’s Report on Internal Control over Financial Reporting, management’s assessment of and conclusion on the
effectiveness of internal control over financial reporting did not include the internal controls of ForRent, Realla Ltd. and Cozy Services, Ltd. related to accounts
receivable and revenues, which are included in the 2018 consolidated financial statements of CoStar Group, Inc. and constituted less than 1% of total assets as of
December 31, 2018 and less than 4% of revenues for the year then ended. Our audit of internal control over financial reporting of CoStar Group, Inc. did not
include an evaluation of the internal control over financial reporting of ForRent, Realla Ltd. and Cozy Services, Ltd.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance
sheets of CoStar Group, Inc. as of December 31, 2018 and 2017, and the related consolidated statements of operations, comprehensive income, stockholders' equity
and cash flows for each of the three years in the period ended December 31, 2018 and the related notes and the financial statement schedule listed in the Index at
Item 15(a)(2) (Collectively referred to as the “financial statements”) of CoStar Group, Inc. and our report dated February 28, 2019 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 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.

F-3

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

Tysons, Virginia

February 28, 2019

F-4

COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share data)

Revenues

Cost of revenues

Gross profit

Operating expenses:

Selling and marketing (excluding customer base amortization)

Software development

General and administrative

Customer base amortization

Income from operations

Interest and other income

Interest and other expense

Loss on debt extinguishment

Income before income taxes

Income tax expense

Net income

Net income per share — basic 

Net income per share — diluted 

Weighted average outstanding shares — basic 

Weighted average outstanding shares — diluted 

See
accompanying
notes.

F-5

Year Ended December 31,

2018

2017

2016

$

1,191,832   $

965,230   $

269,933  

921,899  

220,403  

744,827  

359,858  

100,937  

156,659  

30,881  

648,335  

273,564  

13,281  

(2,830)  

—  

284,015  

45,681  

318,362  

88,850  

146,128  

17,671  

571,011  

173,816  

4,044  

(9,014)  

(3,788)  

165,058  

42,363  

$

$

$

238,334   $

122,695   $

6.61   $

6.54   $

3.70   $

3.66   $

36,058  

36,448  

33,200  

33,559  

837,630

173,814

663,816

296,483

76,400

123,297

22,731

518,911

144,905

1,773

(10,016)

—

136,662

51,591

85,071

2.64

2.62

32,167

32,436

 
 
 
 
 
 
   
   
 
 
   
   
 
 
 
 
 
 
 
 
   
   
 
 
   
   
COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(in thousands)

Net income

Other comprehensive (loss) income, net of tax

Foreign currency translation adjustment

Net decrease in unrealized loss on investments

Reclassification adjustment for realized gains on investments included in net income

Total other comprehensive (loss) income

Total comprehensive income

Year Ended December 31,

2018

2017

2016

  $

238,334   $

122,695   $

85,071

(2,668)  

—  

—  

(2,668)  

3,901  

118  

—  

4,019  

  $

235,666   $

126,714   $

(5,032)

395

(808)

(5,445)

79,626

See
accompanying
notes.

F-6

 
 
 
 
 
 
   
   
   
 
 
 
 
COSTAR GROUP, INC.
CONSOLIDATED BALANCE SHEETS
(in thousands, except per share data)

Current assets:

Cash and cash equivalents

ASSETS

Accounts receivable, less allowance of $5,709 and $6,469 as of December 31, 2018 and December 31, 2017,

respectively

Prepaid expenses and other current assets

Total current assets

Long-term investments

Deferred income taxes, net

Property and equipment, net

Goodwill

Intangible assets, net

Deferred commission costs, net

Deposits and other assets

Income tax receivable

Total assets

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Accounts payable

Accrued wages and commissions

Accrued expenses

Deferred gain on the sale of building

Income taxes payable

Deferred rent

Deferred revenue

Total current liabilities

Deferred gain on the sale of building

Deferred rent

Deferred income taxes, net

Income taxes payable

Other long-term liabilities

December 31,

2018

2017

$

1,100,416   $

1,211,463

89,192  

23,690  

60,900

15,572

1,213,298  

1,287,935

10,070  

7,469  

83,303  

1,611,535  

288,911  

76,031  

7,432  

14,908  

10,070

5,431

84,496

1,283,457

182,892

—

6,179

12,981

$

3,312,957   $

2,873,441

6,327  

45,588  

29,821  

2,523  

14,288  

4,153  

51,459  

154,159  

13,669  

31,944  

69,857  

17,386  

4,000  

9,262

54,104

22,193

2,523

8,166

4,732

45,686

146,666

16,192

33,909

12,070

13,354

—

Total liabilities                                                                                                    

291,015  

222,191

Commitments and contingencies (Note 12)                                                                                                   

Stockholders’ equity:

Preferred stock, $0.01 par value; 2,000 shares authorized; none outstanding

Common stock, $0.01 par value; 60,000 shares authorized; 36,446 and 36,107 issued and outstanding as of December

31, 2018 and 2017, respectively

Additional paid-in capital

Accumulated other comprehensive loss

Retained earnings

Total stockholders’ equity

Total liabilities and stockholders’ equity

—  

364  

—

361

2,419,812  

2,339,253

(11,688)  

613,454  

3,021,942  

$

3,312,957   $

(9,020)

320,656

2,651,250

2,873,441

See
accompanying
notes.

F-7

 
 
 
 
   
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
   
 
 
 
 
COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY
(in thousands)

Common Stock

Shares

  Amount

Additional
Paid-In
Capital

Accumulated
Other
Comprehensive
Loss

Retained
Earnings

Total
Stockholders’
Equity

Balance at December 31, 2015

32,509   $

325   $

1,440,321   $

(7,594)

  $

110,728   $

1,543,780

Net income

Other comprehensive loss

Exercise of stock options

Restricted stock grants

Restricted stock grants surrendered

Stock-based compensation expense

Employee stock purchase plan

Excess tax benefit from stock-based

compensation

—  

—  

29  

195  

(142)  

—  

15  

—  

—  

—  

—  

2  

(1)  

—  

—  

—  

—  

—  

3,303  

(2)  

(16,423)  

36,388  

2,842  

4,698  

—  

85,071  

(5,445)

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

—  

85,071

(5,445)

3,303

—

(16,424)

36,388

2,842

4,698

Balance at December 31, 2016

32,606  

326  

1,471,127  

(13,039)

195,799  

1,654,213

Cumulative effect of adoption of new accounting

standard

Net income

Other comprehensive income

Exercise of stock options

Restricted stock grants

Restricted stock grants surrendered

Stock-based compensation expense

Stock issued for equity offering

Employee stock purchase plan

—  

—  

—  

82  

187  

(99)  

—  

3,317  

14  

—  

—  

—  

1  

2  

(1)  

—  

33  

—  

—  

—  

—  

6,796  

(2)  

(14,901)  

38,921  

833,878  

3,434  

—  

—  

4,019

—  

—  

—  

—  

—  

—  

2,162    

122,695  

—  

—  

—  

—  

—  

—  

—  

122,695

4,019

6,797

—

(14,902)

38,921

833,911

3,434

Balance at December 31, 2017

36,107  

361  

2,339,253  

(9,020)

320,656  

2,651,250

Cumulative effect of adoption of new accounting

standard, net of tax

Balance at January 1, 2018

Net income

Other comprehensive loss

Exercise of stock options

Restricted stock grants

Restricted stock grants surrendered

Stock-based compensation expense

Employee stock purchase plan

Stock issued for acquisitions

—  

—  

—  

36,107

361

2,339,253

—  

—  

177  

160  

(116)  

—  

15  

103  

—  

—  

2  

1  

(1)  

—  

—  

1  

—  

—  

21,991  

(1)  

(24,326)  

40,889  

5,641  

36,365  

—  

(9,020)

—  

(2,668)

—  

—  

—  

—  

—  

—  

54,464  

375,120

238,334  

—  

—  

—  

—  

—  

—  

—  

54,464

2,705,714

238,334

(2,668)

21,993

—

(24,327)

40,889

5,641

36,366

Balance at December 31, 2018

36,446   $

364   $

2,419,812   $

(11,688)

  $

613,454   $

3,021,942

See
accompanying
notes.

F-8

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)

Operating activities:

Net income

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization

Amortization of deferred commissions costs

Amortization of debt issuance costs

Loss on extinguishment of debt

Impairment loss

Loss on disposal of property and equipment

Realized gain on investments

Stock-based compensation expense

Deferred income taxes, net

Bad debt expense

Changes in operating assets and liabilities, net of acquisitions:

Accounts receivable

Prepaid expenses and other current assets

Deferred commissions

Income tax receivable

Accounts payable and other liabilities

Income taxes payable

Deferred revenue

Deposits and other assets

Year Ended December 31,

2018

2017

2016

$

238,334   $

122,695   $

85,071

77,743  

48,313  

876  

—  

—  

73  

—  

41,214  

3,666  

6,542  

(27,819)  

(1,651)  

(53,497)  

(1,927)  

(14,132)  

9,632  

7,879  

212  

63,643  

—  

2,303  

3,788  

—  

129  

—  

39,030  

(2,903)  

5,690  

(17,524)  

(3,672)  

—  

(12,981)  

11,525  

16,937  

6,004  

39  

70,165

—

3,227

—

23

839

(808)

36,349

15,635

7,358

(16,044)

(1,157)

—

—

(1,520)

2,816

(2,070)

758

Net cash provided by operating activities

335,458  

234,703  

200,642

Investing activities:

Proceeds from sale and settlement of investments

Purchases of property and equipment and other assets

Cash paid for acquisitions, net of cash acquired

Net cash used in investing activities

Financing activities:

Payments of long-term debt

Payments of debt issuance costs

Repurchase of restricted stock to satisfy tax withholding obligations

Proceeds from equity offering, net of transaction costs

Proceeds from exercise of stock options and employee stock purchase plan

Net cash provided by (used in) financing activities

Effect of foreign currency exchange rates on cash and cash equivalents

Net (decrease) increase in cash and cash equivalents

Cash and cash equivalents at beginning of year

Cash and cash equivalents at end of year

F-9

—  

(29,632)  

(418,369)  

(448,001)  

—  

—  

(24,327)  

—  

27,071  

2,744  

(1,248)  

(111,047)  

1,211,463  

—  

(24,499)  

(47,768)  

(72,267)  

(345,000)  

(3,467)  

(14,902)  

833,911  

9,888  

480,430  

1,374  

644,240  

567,223  

$

1,100,416   $

1,211,463   $

5,950

(18,766)

(10,443)

(23,259)

(20,000)

—

(16,424)

—

5,861

(30,563)

(1,415)

145,405

421,818

567,223

 
 
 
 
 
   
   
 
 
 
   
 
 
 
   
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
 
   
   
COSTAR GROUP, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)

Supplemental cash flow disclosures:

Interest paid

Income taxes paid

Supplemental non-cash investing and financing activities:

Stock issued in connection with acquisition - ForRent

Consideration owed for acquisitions

$

$

1,421   $

35,980  

6,445   $

41,283  

6,712

34,132

36,366   $

1,534  

—   $

—  

—

—

See
accompanying
notes.

F-10

 
   
   
 
 
   
   
 
   
   
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

December 31, 2018

1.

ORGANIZATION

CoStar Group, Inc. (the “Company” or “CoStar”) provides information, analytics and online marketplace services to the commercial real estate and related
business  community  through  its  comprehensive,  proprietary  database  of  commercial  real  estate  information  covering  the  United  States  (“U.S.”),  the  United
Kingdom (“U.K.”), and parts of Canada, Spain, Germany and France. The Company provides online marketplaces for commercial real estate, apartment rentals,
lands  for  sale  and  businesses  for  sale.  The  Company  operates  within  two operating  segments,  North  America  and  International,  and  its  services  are  typically
distributed to its clients under subscription-based license agreements that renew automatically, a majority of which have a term of one year .

2.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions

have been eliminated in consolidation. Accounting policies are consistent for each operating segment.

Use of Estimates

The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates
and assumptions that affect the amounts reported in the financial statements and accompanying notes. On an ongoing basis, the Company evaluates its estimates
and assumptions, including those related  to revenue recognition,  allowance  for doubtful accounts, useful lives of property and equipment  and intangible  assets,
recoverability  of  long-lived  assets  and  intangible  assets  with  definite  lives,  goodwill,  income  taxes,  fair  value  of  equity  instruments,  fair  value  of  auction  rate
securities  (“ARS”),  accounting  for  business  combinations,  stock-based  compensation  and  contingencies,  among  others.  The  Company  bases  these  estimates  on
historical and anticipated results, trends, and various other assumptions that it believes are reasonable, including assumptions as to future events. These estimates
form the basis for making judgments about the carrying values of assets and liabilities and recorded revenues and expenses. Actual results could differ from these
estimates.

Revenue Recognition

Subsequent
to
the
Adoption
of
Accounting
Standards
Update
(“ASU")
2014-09,
Revenue
from
Contracts
with
Customers,
later
codified
as
Accounting
Standards
Codification
606
("ASC
606"),
on
January
1,
2018

The Company derives revenues primarily by (i) providing access to its proprietary database of commercial real estate information and (ii) providing online
marketplaces for professional property management companies, property owners, brokers, and landlords, in each case typically through a fixed monthly fee for its
subscription-based services. The Company's subscription-based services consist primarily of information, analytics and online marketplace services offered over
the Internet to commercial real estate industry and related professionals. Subscription contract rates are based on the number of sites, number of users, organization
size, the client’s  business focus, geography, the number and types of services  to which a client  subscribes, the number of properties a client  advertises and the
prominence and placement of a client's advertised properties in the search results. A majority of the subscription-based license agreements have a term of  one year
and renew automatically.

The Company analyzes contracts to determine the appropriate revenue recognition using the following steps: (i) identification of contracts with customers, (ii)
identification of distinct performance obligations in the contract, (iii) determination of contract transaction price, (iv) allocation of contract transaction price to the
performance obligations and (v) determination of revenue recognition based on timing of satisfaction of the performance obligation(s).

The Company recognizes revenues upon the satisfaction of its performance obligation(s) (upon transfer of control of promised services to its customers) in an
amount that reflects the consideration to which it expects to be entitled to in exchange for those services. Revenues from subscription-based services are recognized
on a straight-line basis over the term of the agreement.

The  Company's  contracts  with  customers  often  include  promises  to  transfer  multiple  services.  For  these  contracts,  the  Company  accounts  for  individual
performance  obligations  separately  if  they  are  distinct.  Determining  whether  services  are  considered  distinct  performance  obligations  may  require  significant
judgment. Judgment is required to determine the standalone selling price (“SSP”)

F-11

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

for each distinct performance obligation. In instances where SSP is not directly observable, such as when the Company does not sell the services separately, the
Company determines the SSP using available information, including market conditions and other observable inputs.

Deferred revenue results from amounts billed in advance to customers or cash received from customers in advance of the sale of subscription licenses and is

recognized over the term of the license agreement.

Contract assets represent a conditional right to consideration for satisfied performance obligations that become a receivable when the conditions are satisfied.

Contract assets are generated when contractual billing schedules differ from revenue recognition timing.

Certain sales commissions are considered incremental and recoverable costs of obtaining a contract with a customer. Sales commissions incurred for obtaining
new contracts are deferred and then amortized as selling and marketing expenses on a straight-line basis over a period of benefit that the Company has determined
to  be  three  years.  The  three-year  amortization  period  was  determined  based  on  several  factors,  including  the  nature  of  the  technology  and  proprietary  data
underlying the services being purchased, customer contract renewal rates and industry competition. Certain commission costs are not capitalized as they do not
represent incremental costs of obtaining a contract. See Note  3  for further discussion on the impact of the adoption of  ASC
606
.

For details about the Company’s revenue recognition policy prior to the adoption of  ASC
606
, refer to the Company’s Annual Report on Form 10-K for the

year ended December 31, 2017, filed with the Securities and Exchange Commission on February 23, 2018.

Cost of Revenues

Cost of revenues principally consists of salaries, benefits, bonuses, and stock-based compensation expenses for the Company’s researchers who collect and
analyze the commercial real estate data that is the basis for the Company’s information, analytics and online marketplaces. Additionally, cost of revenues includes
the cost of data from third-party data sources, credit card and other transaction fees relating to processing customer transactions, which are expensed as incurred,
and the amortization of acquired trade names, technology and other intangible assets.

Foreign Currency Translation

The Company’s functional currency in its foreign locations is the local currency. Assets and liabilities are translated into U.S. dollars using the exchange rates
as  of  the  balance  sheet  dates.  Revenues,  expenses,  gains  and  losses  are  translated  at  the  average  exchange  rates  in  effect  during  each  period.  Gains  and  losses
resulting  from  translation  are  included  in  accumulated  other  comprehensive  loss.  Currency  g  ains  and  losses  on  the  translation  of  intercompany  loans  made  to
foreign subsidiaries that are of a long-term investment nature are also included in accumulated other comprehensive loss. Net gains or losses resulting from foreign
currency exchange transactions are included in the consolidated statements of operations. There were no material gains or losses from foreign currency exchange
transactions for the years ended December 31, 2018 , 2017 , and 2016 .

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss were as follows (in thousands):

Foreign currency translation adjustment

Net unrealized loss on investments, net of tax

Total accumulated other comprehensive loss

As of December 31,

2018

2017

$

$

(10,958)   $

(730)  

(11,688)   $

(8,290)

(730)

(9,020)

There  were  no  amounts  reclassified  out  of  accumulated  other  comprehensive  loss  to  the  consolidated  statements  of  operations  for  the  years  ended
December 31, 2018 and December 31, 2017 . The amount of realized gain from the redemption of available-for-sale securities reclassified out of accumulated other
comprehensive loss to the consolidated statement of operations for the year ended  December 31, 2016  was approximately  $0.8 million .

F-12

 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Advertising Costs

The Company expenses advertising costs as incurred. Advertising costs include e-commerce, television, radio, print and other media advertising. Advertising

costs were approximately $124 million , $104 million and $109 million for the years ended December 31, 2018 , 2017 , and 2016 , respectively.

Income Taxes

Deferred income taxes result from temporary differences between the tax basis of assets and liabilities and the basis reported in the Company’s consolidated
financial  statements.  Deferred  tax  liabilities  and  assets  are  determined  based  on  the  difference  between  the  financial  statement  and  the  tax  basis  of  assets  and
liabilities  using  enacted  rates  in  effect  during  the  year  in  which  the  Company  expects  differences  to  reverse.  Valuation  allowances  are  provided  against  assets,
including net operating losses, if the Company determines it is more likely than not that some portion or all of an asset may not be realized. Interest and penalties
related to income tax matters are recognized in income tax expense. See Note 11 for additional information regarding income taxes.

Net Income Per Share

Net income per share is computed by dividing net income by the weighted average number of common shares outstanding during the period on a basic and
diluted basis. The Company’s potentially dilutive securities include stock options and restricted stock awards. Diluted net income per share considers the impact of
potentially dilutive securities except in periods in which there is a net loss, as the inclusion of the potentially dilutive common shares would have an anti-dilutive
effect. See Note 15 for additional information on the Company's calculation of net income per share.

Stock-Based Compensation

Equity instruments issued in exchange for services performed by officers, employees, and directors of the Company are accounted for using a fair-value based

method and the fair value of such equity instruments is recognized as expense in the consolidated statements of operations.

Stock-based compensation expense is measured at the grant date of the stock-based awards that vest over set time periods based on their fair values, and is
recognized on a straight-line basis over the vesting periods of the awards, net of an estimated forfeiture rate. For equity instruments that vest based on performance,
the Company assesses the probability of the achievement of the performance conditions at the end of each reporting period, or more frequently based upon the
occurrence of events that may change the probability of whether the performance conditions will be met. If the Company's initial estimates of the achievement of
the performance conditions change, the related stock-based compensation expense and timing of recognition may fluctuate from period to period based on those
estimates.  For  equity  instruments  that  vest  based  on  a  performance  condition  and  a  market  condition,  the  Company  estimates  the  fair  value  of  each  equity
instrument  granted  on  the  date  of  grant  using  a  Monte-Carlo  simulation  model.  This  pricing  model  uses  multiple  simulations  to  evaluate  the  probability  of
achieving the market condition to calculate the fair value of the awards. Stock-based compensation expense is updated based on the expected achievement of the
related  performance  conditions  at  the  end  of  each  reporting  period.  If  the  performance  conditions  are  not  met,  no  stock-based  compensation  expense  will  be
recognized, and any previously recognized stock-based compensation expense will be reversed.

Stock-based compensation expense for stock options and restricted stock awards issued under equity incentive plans and stock purchases under the Employee

Stock Purchase Plan ("ESPP") included in the Company’s results of operations were as follows (in thousands):

Cost of revenues  (1)

Selling and marketing (excluding customer base amortization)

Software development                                                                                              

General and administrative                                                                                              

Total stock-based compensation

Year Ended December 31,

2018

2017

2016

$

$

7,688   $

4,971   $

6,881  

7,454  

20,695  

7,086  

7,071  

19,902  

42,718   $

39,030   $

5,495

6,634

6,546

17,674

36,349

__________________________
(1) Includes $1.5 million of expense related to the cash settlement of stock options in connection with the acquisition of Cozy Services, Ltd. See Note 4 for details of the acquisition.

F-13

 
 
 
 
                                                                                            
 
   
   
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash equivalents as

of December 31, 2018 and 2017 consisted of money market funds.

Investments

The Company determines the appropriate classification of debt and equity investments at the time of purchase and re-evaluates such designation as of each
balance  sheet  date.  The  Company's  investments  consist  of  long-term  variable  rate  debt  instruments  with  an  auction  reset  feature,  referred  to  as  auction  rate
securities, and are classified as available-for-sale. The Company's auction rate security investments are carried at fair value and any changes in unrealized holding
gains and losses, net of the related tax effect, are excluded from earnings and are reported as a separate component of accumulated other comprehensive loss in
stockholders’ equity until realized. A decline in market value of any investment below cost that is deemed to be other-than-temporary results in a  reduction in
carrying  amount  to  fair  value.  The  impairment  is  charged  to  earnings  and  a  new  cost  basis  for  the  security  is  established.  Dividend  and  interest  income  are
recognized when earned.

Concentration of Credit Risk and Financial Instruments

The  Company  performs  ongoing  assessments  of  its  customers’  financial  conditions  and  generally  does  not  require  that  its  customers’  obligations  to  the
Company be secured. The Company maintains reserves for doubtful accounts, which have historically been immaterial to the Company's consolidated financial
statements. Further, the large size of the Company’s customer base creates a lack of dependence on any individual customer that mitigates the risk of nonpayment
of the Company’s accounts receivable. No single customer accounted for more than 5% of the Company’s revenues for each of the years ended December 31, 2018
, 2017 , and 2016 . The carrying amount of the accounts receivable approximates the net realizable value.

The Company holds cash at major financial institutions that often exceed Federal Deposit Insurance Corporation insured limits. The Company manages its
credit  risk  associated  with  cash  concentrations  by  concentrating  its  cash  deposits  in  high  quality  financial  institutions  and  by  periodically  evaluating  the  credit
quality  of  the  primary  financial  institutions  holding  such  deposits.  The  carrying  value  of  cash  approximates  fair  value.  Historically,  the  Company  has  not
experienced any losses due to such cash concentrations.

Accounts Receivable, Net of Allowance for Doubtful Accounts

Accounts receivable are recorded at the invoiced amount net of credits due. Accounts receivable payment terms vary and amounts due from customers are
stated in the financial statements net of an allowance for doubtful accounts. When evaluating the adequacy of the allowance for doubtful accounts, the Company
analyzes historical collection experience, changes in customer payment profiles and the aging of receivable balances, as well as current economic conditions, all of
which may affect a customer’s ability to pay. 

Property and Equipment, Net

Property  and  equipment  are  stated  at  cost,  net  of  accumulated  depreciation  and  amortization.  All  repairs  and  maintenance  costs  are  expensed  as  incurred.

Depreciation and amortization are calculated on a straight-line basis over the following estimated useful lives of the assets:

Leasehold improvements

Furniture and office equipment

Vehicles

Computer hardware and software

  Shorter of lease term or useful life

  Five to ten years

  Five to ten years

  Three to five years

Qualifying  internal-use  software  costs  incurred  during  the  application  development  stage,  which  consist  primarily  of  internal  product  development  costs,
outside  services  and  purchased  software  license  costs  are  capitalized  and  amortized  over  the  estimated  useful  life  of  the  asset.  All  other  costs  are  expensed  as
incurred.

F-14

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Goodwill and Intangible Assets

Goodwill represents the future economic benefits arising from a business combination and is calculated as the excess of the purchase consideration paid in a
business combination over the fair value of assets acquired. Goodwill is not amortized, but instead is assigned to each of the Company's reporting units and tested
for impairment at least annually or when events and circumstances indicate that the fair value of a reporting unit may be below its carrying value. The Company
may first assess qualitative factors to evaluate whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount or elect to
bypass such assessment. If it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying value, or the Company elects
to bypass such assessment, the Company performs a quantitative test that requires the determination of the fair value of each reporting unit. The estimate of the fair
value of each reporting unit is based on a projected discounted cash flow model that includes significant assumptions and estimates including the discount rate,
growth  rate  and  future  financial  performance.  Assumptions  about  the  discount  rate  are  based  on  a  weighted  average  cost  of  capital  for  comparable  companies.
Assumptions about the growth rate and future financial performance of a reporting unit are based on the Company's forecasts, business plans, economic projections
and  anticipated  future  cash  flows.  The  fair  value  of  each  reporting  unit  is  compared  to  the  carrying  amount  of  the  reporting  unit.  If  the  carrying  value  of  the
reporting unit exceeds the fair value, then an impairment loss is recognized for the difference.

Acquired  technology,  trade  names  and  other  intangible  assets,  and  customer  base  assets  are  related  to  the  Company’s  acquisitions  (see  Notes  8 and 9 ).
Acquired technology is amortized on a straight-line basis over periods ranging from two years to eight years . Acquired trade names and other intangible assets are
amortized on a straight-line basis over periods ranging from one year to fifteen years . Acquired intangible assets characterized as customer base assets consist of
acquired customer contracts and the related customer relationships and are amortized over periods ranging from five years to thirteen years . Acquired customer
bases are amortized on an accelerated or straight-line basis depending on the expected economic benefit of the intangible asset.

Long-Lived Assets

Long-lived  assets,  such  as  property  and  equipment,  and  purchased  intangibles  subject  to  amortization,  are  reviewed  for  impairment  whenever  events  or
changes  in  circumstances  indicate  that  the  carrying  amount  of  an  asset  may  not  be  recoverable.  Recoverability  of  assets  to  be  held  and  used  is  measured  by  a
comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying
amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds
the fair value of the asset.

Assets to be disposed of are separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are
no longer depreciated. The assets and liabilities of a disposal group classified as held for sale are presented separately in the appropriate asset and liability sections
of the balance sheet.

Debt Issuance Costs

Costs incurred in connection with the issuance of long-term debt are deferred and amortized as interest expense over the term of the related debt using the
effective interest method for term debt and on a straight-line  basis for revolving debt. To the extent that debt is outstanding, these amounts are reflected in the
consolidated balance sheets as direct deductions from a combination of the current and long-term portions of debt for term debt and as current and long-term assets
for  costs  related  to  revolving  debt.  Upon  a  refinancing  or  amendment,  previously  capitalized  debt  issuance  costs  are  expensed  and  included  in  loss  on
extinguishment of debt if the Company determines that there has been a substantial modification of the related debt. If the Company determines that there has not
been a substantial modification of the related debt, any previously capitalized debt issuance costs are amortized as interest expense over the term of the new debt
instrument. See Note 10 for additional information on the Company's long-term debt and related debt issuance costs.

Business Combinations

The Company allocates the purchase consideration to the tangible assets acquired, liabilities assumed and intangible assets acquired based on their estimated
fair values. The purchase price is determined based on the fair value of the assets transferred, liabilities incurred and equity interests issued, after considering any
transactions that are separate from the business combination. The excess of the fair value of purchase consideration over the fair values of these identifiable assets
and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible
assets and contingent liabilities. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired
customer bases, acquired technology and acquired trade names, useful lives, royalty rates and

F-15

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

discount  rates.  Any  adjustments  to  provisional  amounts  that  are  identified  during  the  measurement  period  are  recorded  in  the  reporting  period  in  which  the
adjustment amounts are determined. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.

For a given acquisition, the Company may identify certain pre-acquisition contingencies as of the acquisition date and may extend its review and evaluation of
these  pre-acquisition  contingencies  throughout  the  measurement  period  in  order  to  obtain  sufficient  information  to  assess  whether  the  Company  includes  these
contingencies as a part of the fair value estimates of assets acquired and liabilities assumed and, if so, to determine their estimated amounts.

If the Company cannot reasonably determine the fair value of a pre-acquisition contingency (non-income tax related) by the end of the measurement period,
which is generally the case given the nature of such matters, the Company will recognize an asset or a liability for such pre-acquisition contingency if: (i) it is
probable  that  an  asset  existed  or  a  liability  had  been  assumed  at  the  acquisition  date  and  (ii)  the  amount  of  the  asset  or  liability  can  be  reasonably  estimated.
Subsequent  to  the  measurement  period,  changes  in  the  Company's  estimates  of  such  contingencies  will  affect  earnings  and  could  have  a  material  effect  on  its
results of operations and financial position.

In addition, uncertain tax positions and tax related valuation allowances assumed in connection with a business combination are initially estimated as of the
acquisition  date.  The  Company  reevaluates  these  items  based  upon  facts  and  circumstances  that  existed  as  of  the  acquisition  date,  with  any  adjustments  to  its
preliminary estimates being recorded to goodwill provided that the Company is within the measurement period. Subsequent to the measurement period, changes to
these uncertain tax positions and tax related valuation allowances will affect the Company's provision for income taxes in its consolidated statements of operations
and comprehensive income and could have a material impact on its results of operations and financial position.

Recent Accounting Pronouncements

Recently
Adopted
Accounting
Pronouncements

In  May  2014,  the  Financial  Accounting  Standards  Board  (“FASB”)  and  International  Accounting  Standards  Board  (“IASB”)  jointly  issued  a  new  revenue
recognition  standard,  Accounting  Standards  Update  (“ASU")  2014-09,  Revenue 
from 
Contracts 
with 
Customers
 ,  later  codified  as  Accounting  Standards
Codification ("ASC") 606 (" ASC
606"
), that is designed to improve financial reporting by creating common recognition guidance for GAAP and International
Financial  Reporting  Standards  (“IFRS”).  This  guidance  provides  a  robust  framework  for  addressing  revenue  issues,  improves  the  comparability  of  revenue
recognition practices across industries, provides useful information to users of financial statements through improved disclosure requirements and simplifies the
presentation of financial statements. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised services to
customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those services.

On  January  1,  2018,  the  Company  adopted  ASC 
606,
 using  the  modified  retrospective  method.  Results  for  reporting  periods  beginning  subsequent  to
December 31, 2017 are presented under ASC
606
, while prior period amounts are not adjusted and continue to be reported in accordance with the Company’s
historical accounting policies prior to adoption. In adopting the guidance, the Company applied the guidance to all customer contracts and used several available
practical expedients including assessing contracts with similar terms and conditions on a “portfolio” basis and not including contracts with a duration of one year or
less in the unsatisfied performance obligations disclosure.

F-16

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The Company recorded a net cumulative increase to beginning retained earnings of $54 million . The Company adjusted the condensed consolidated financial
statements from amounts previously reported due to the adoption of ASC
606
. Select condensed consolidated balance sheet line items which were adjusted upon
adoption were as follows (in thousands):

Assets

Accounts receivable, less allowance for doubtful accounts

Prepaid expenses and other current assets

Deferred commissions costs, net

Liabilities

Deferred revenue

Deferred income taxes, net

Retained earnings

As of
December 31, 2017

  ASC 606 Adjustments

As of
January 1, 2018

$

$

60,900   $

15,572  

—  

45,686   $

12,070  

320,656  

(1,867)

  $

1,867

71,118

(1,716)

  $

18,370

54,464

59,033

17,439

71,118

43,970

30,440

375,120

The impact of the adoption of ASC
606
on the condensed financial statements for the period ended December 31, 2018 was as follows (in thousands):

Assets

Accounts receivable, less allowance for doubtful accounts

Prepaid expenses and other current assets

Deferred commissions costs, net

Liabilities

Deferred revenue

Deferred income taxes, net

Retained earnings

As of
December 31, 2018
without adoption of ASC
606

  ASC 606 Adjustments

As Reported as of
December 31, 2018

$

$

91,122   $

21,760  

—  

57,284   $

49,147  

552,308  

(1,930)

  $

1,930

76,031

(5,825)

  $

20,710

61,146

89,192

23,690

76,031

51,459

69,857

613,454

If the Company had not adopted ASC
606
, revenue recognized would have been $4 million lower and selling and marketing expense would have been $5
million higher for the year ended December 31, 2018 . The impact on net income and basic and diluted earnings per share for the year ended December 31, 2018
would have been a decrease of approximately $7 million or $0.19 per share, respectively.

In August 2016, the FASB issued ASU 2016-15, Statement
of
Cash
Flows
(Topic
230):
Classification
of
Certain
Cash
Receipts
and
Cash
Payments
, which is
designed to reduce the existing diversity in how certain cash receipts and cash payments are presented and classified in the consolidated statements of cash flows.
This guidance is effective on a retrospective basis for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting
period.  On  January  1,  2018,  the  Company  adopted  this  guidance  and  the  adoption  did  not  have  a  material  impact  on  the  Company's  consolidated  financial
statements and related disclosures.

In January 2017, the FASB issued ASU 2017-01,  Business
Combinations
(Topic
805):
Clarifying
the
Definition
of
a
Business
, which is designed to clarify
the definition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The
guidance indicates that when substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group
of  similar  identifiable  assets,  the  set  of  assets  is  not  a  business.  This  guidance  is  effective  on  a  prospective  basis  for  annual  reporting  periods  beginning  after
December 15, 2017, including interim periods within that reporting period. On January 1, 2018, the Company adopted this guidance and the adoption did not have
a material impact on the Company's consolidated financial statements and related disclosures.

In  May  2017,  the  FASB  issued  ASU  2017-09,  Compensation-Stock 
Compensation 
(Topic 
718): 
Scope 
of 
Modification 
Accounting
 ,  which  is  designed  to

reduce the existing diversity and complexity in the accounting for changes to terms or conditions

F-17

 
 
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
   
   
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

of  a  share-based  payment  award.  This  guidance  clarifies  that  an  entity  will  not  apply  modification  accounting  to  a  share-based  payment  award  if  all  of  the
following are the same immediately before and after the change: (i) the fair value of the award, (ii) the vesting conditions of the award, and (iii) the classification
of the award as an equity instrument or liability instrument. This guidance is effective on a prospective basis for annual reporting periods beginning after December
15, 2017, including interim periods within that reporting period. On January 1, 2018, the Company adopted this guidance and the adoption did not have a material
impact on the Company's consolidated financial statements and related disclosures.

Recent Accounting Pronouncements Not Yet Adopted

In  February  2016,  the  FASB  issued  ASU  2016-02,  Leases 
("ASC 
842")
 ,  to  increase  transparency  and  comparability  among  organizations'  accounting  for
leases.  The  guidance  requires  a  company  to  recognize  right-of-use  assets  and  lease  liabilities  on  the  balance  sheet,  as  well  as  to  disclose  key  quantitative  and
qualitative information about leasing arrangements. This guidance is effective on a modified retrospective basis for reporting periods beginning after December 15,
2018, with early adoption permitted. As permitted by the guidance, the Company will elect to retain the original lease classification and historical accounting for
initial direct costs for leases existing prior to the adoption date. Furthermore, the Company will not have to reassess contracts entered into prior to the adoption date
for the existence of a lease. The Company will also elect not to restate prior periods for the impact of the adoption of the new standard and will instead recognize a
cumulative-effect adjustment to beginning retained earnings as of January 1, 2019 for any prior period income statement effects identified.

The Company assessed  the changes  required  to support the  adoption  of the  new standard,  as well as the  quantitative  impact  this guidance  will have on its
financial statements and related disclosures. As a result, the Company expects that the adoption of this standard will result in the recognition of Right of Use Assets
between $100 million and $120 million , as well as Lease Liabilities between $140 million and $160 million on its consolidated balance sheet, primarily as a result
of recognizing assets and liabilities associated with existing office leases . Lastly, the Company expects to recognize a cumulative-effect adjustment to beginning
retained earnings of $12 million , net  of tax, as of January 1, 2019 to recognize  the remaining  gain on the Company's outstanding deferred  gain on the sale of
building, pursuant to the guidance in ASC
842
.

Beginning  in  2019,  the  Company  expects  significant  changes  to  its  disclosed  lease  recognition  policies  and  practices,  as  well  as  to  other  related  financial

statement disclosures due to the adoption of this standard. These revised disclosures will be made in the Company’s first quarterly report in 2019.

In August 2018, the FASB issued ASU 2018-13, Fair
Value
Measurements
(subsequent
to
adoption
of
ASU
2018-13,
Fair
Value
Measurement.
The ASU was
issued  to  eliminate  certain  disclosure  requirements  for  fair  value  measurements,  and  add  and  modify  other  disclosure  requirements,  as  part  of  its  disclosure
framework project, including additional requirements for public companies to disclose certain information about the significant unobservable inputs for Level 3
fair  value  measurements.  This  guidance  is  effective  for  fiscal  years  beginning  after  December  15,  2019  and  for  interim  periods  within  those  fiscal  years.  The
Company is currently evaluating the impact this guidance will have on its financial statements and related disclosures.

In August 2018, the FASB issued ASU 2018-15,  Intangibles
-
Goodwill
and
Other
-
Internal-Use
Software
(Subtopic
350-40):
Customer’s
Accounting
for
Implementation 
Costs 
Incurred 
in 
a 
Cloud 
Computing 
Arrangement 
That 
Is 
a 
Service 
Contract.
 ASU  2018-15  requires  a  customer  in  a  cloud  computing
arrangement  that  is  a  service  contract  to  follow  the  internal-use  software  guidance  in  Accounting  Standards  Codification  350-40  to  determine  which
implementation  costs  to  defer  and  recognize  as  an  asset.  For  public  business  entities,  the  guidance  is  effective  for  annual  and  interim  periods  beginning  after
December 15, 2019. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements and related disclosures.

F-18

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

3.     REVENUE FROM CONTRACTS WITH CUSTOMERS

Disaggregated Revenue

The  Company  provides  information,  analytics  and  online  marketplaces  to  the  commercial  real  estate  industry  and  related  professionals.  The  revenues  by

operating segment and type of service consist of the following (in thousands):

Year Ended December 31,

2018

2017

North America

International

Total

  North America

International

Total

Information and analytics  

CoStar Suite

$

519,661   $

Information services

58,708  

25,534   $

8,916  

545,195   $

440,534   $

67,624  

64,503  

22,651   $

8,115  

405,795  

279,855  

173,218  

149,572  

934,464   $

Online marketplaces

Multifamily

Commercial property

and land

405,795  

173,137  

—  

81  

Total revenues

$

1,157,301   $

34,531   $

1,191,832   $

Deferred Revenue

Changes in deferred revenue for the period were as follows (in thousands):

Balance at December 31, 2017

Cumulative effect of adoption of ASC 606

Balance at January 1, 2018

Revenue recognized in the current period from the amounts in the beginning balance

New deferrals, net of amounts recognized in the current period

Effects of foreign currency

Balance at December 31, 2018

Contract Assets

—  

—  

30,766   $

$

$

463,185

72,618

279,855

149,572

965,230

45,686

(1,716)

43,970

(43,121)

51,000

(390)

51,459

The Company had contract assets of $2 million as of December 31, 2018 and January 1, 2018 , which are generated when contractual billing schedules differ
from  revenue  recognition  timing.  Contract  assets  represent  a  conditional  right  to  consideration  for  satisfied  performance  obligations  that  becomes  a  receivable
when the conditions are satisfied.

Commissions

The Company recognized $48 million of amortization of deferred commissions included in selling and marketing expense during the year ended months ended

December 31, 2018 . The Company determined that no deferred commissions were impaired as of December 31, 2018 .

Commissi ons expense activity for the year ended December 31, 2018 was as follows (in thousands):

Commissions incurred

Commissions capitalized in the current period

Amortization of deferred commissions costs

Total commissions expense

F-19

Year Ended December 31, 2018

$

$

72,899

(53,497)

48,313

67,715

 
 
 
 
 
 
 
 
   
   
   
   
   
 
   
   
   
   
   
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Refer to Note 2 for the Company's policy on accounting for commissions.

Unsatisfied Performance Obligations

Remaining contract consideration for which revenue has not been recognized due to unsatisfied performance obligations was approximately $193 million at

December 31, 2018 , which the Company expects to recognize over the next three years . This amount does not include contract consideration for contracts with a
duration of one year or less.

4.     ACQUISITIONS

ForRent

On  February  21,  2018  (the  "Acquisition  Date"),  the  Company  acquired  all  of  the  issued  and  outstanding  capital  stock  of  DE  Holdings,  Inc.,  including  its
ForRent division ("ForRent"), a wholly owned subsidiary of Dominion Enterprises ("Seller"), for a purchase price of approximately $376 million . The purchase
price  was  comprised  of  approximately  $340  million  in  cash  and  103,280 shares  of  Company  common  stock,  valued  at  approximately  $36  million  . ForRent's
primary service is digital advertising provided through a network of four multifamily websites. The acquisition is expected to yield increased revenue, significant
cost synergies and an improved competitive position in the industry. The Company applied the acquisition method to account for the ForRent transaction, which
requires that assets acquired and liabilities assumed be recorded at their fair values as of the acquisition date.

The following table summarizes the amounts recorded for acquired assets and assumed liabilities recorded at their fair values as of the Acquisition Date (in

thousands):

Cash and cash equivalents

Accounts receivable

Indemnification asset

Goodwill

Intangible assets

Deferred tax liabilities

Contingent sales tax liability

State uncertain income tax position liability

Other assets and liabilities

Fair value of identifiable net assets acquired

Preliminary:
February 21, 2018

Measurement Period
Adjustments

Final:
February 21, 2018

$

$

59   $

8,769  

5,443  

266,720  

141,300  

(34,032)  

(6,260)  

(2,047)  

(3,453)  

—   $

—  

—  

(125)

—  

—  

—  

—  

(82)

376,499   $

(207)

  $

59

8,769

5,443

266,595

141,300

(34,032)

(6,260)

(2,047)

(3,535)

376,292

The  net  assets  of  ForRent  were  recorded  at  their  estimated  fair  values.  In  valuing  acquired  assets  and  assumed  liabilities,  fair  value  estimates  were  based
primarily on future expected cash flows, market rate assumptions for contractual obligations and appropriate discount rates. Measurement period adjustments relate
to the determination of working capital as of the Acquisition Date.

The acquired customer base for the acquisition is composed of acquired customer contracts and the related customer relationships, and has a weighted average
estimated useful life of ten years . The acquired technology has an estimated useful life of three years . The acquired trade name has a weighted average estimated
useful life of ten years . The acquired building photography has an estimated useful life of one year . Amortization of the acquired customer base is recognized on
an accelerated basis related to the expected economic benefit of the intangible asset, while amortization of the acquired technology, acquired building photography
and  acquired  trade  names  and  other  intangible  assets  is  recognized  on  a  straight-line  basis  over  their  respective  estimated  useful  lives.  Goodwill  recorded  in
connection with this acquisition is not amortized, but is subject to an annual impairment test. The $267 million of goodwill recorded as part of the acquisition is
associated with the Company's North America operating segment. $8 million of the goodwill recognized is expected to be deductible for income tax purposes in
future periods.

Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and represents the future economic benefits arising from
other  assets  acquired  that  could  not  be  individually  identified  and  separately  recognized.  Specifically,  the  goodwill  recorded  as  part  of  the  ForRent  acquisition
includes but is not limited to: (i) the expected synergies and other benefits

F-20

 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

that  the  Company  believes  will  result  from  combining  its  operations  with  ForRent's  operations;  and  (ii)  any  intangible  assets  that  do  not  qualify  for  separate
recognition, such as the assembled workforce.

Upon  acquisition,  the  Company  assessed  the  (i)  probability  of  a  contingent  sales  tax  liability  and  (ii)  a  state  uncertain  income  tax  position  liability  due  to
apportionment factors, and recorded accruals of $6 million and $2 million , respectively. The Company could not determine the fair value for the pre-acquisition
state sales tax liability and therefore estimated a liability in accordance with ASC
450
, using a state-by-state assessment. The uncertain income tax position was
determined in accordance with the provisions of ASC
740
and was recorded as part of the purchase price allocation. The Seller has provided an indemnity for tax
liabilities related to periods prior to the acquisition. The Seller's indemnification for sales taxes in the state of Texas is limited to approximately $2 million . The
total indemnification asset established as of the acquisition date is $5 million . $1 million of the uncertain income tax position liability and related indemnification
asset  recognized  as  of  the  acquisition  date  were  reversed  during  the  year,  upon  expiration  of  the  statute  of  limitations  applicable  to  the  uncertain  income  tax
position.

As part of the ForRent acquisition, the Company incurred $3 million of transaction costs. Additionally, the Company paid $12 million cash into a cash escrow
account for retention compensation for certain ForRent employees, payable if they remained employed by the Company for a defined six-month period following
the acquisition or were earlier terminated without cause or resigned for good reason. In the event some or all of those employees were not entitled to their retention
bonus,  those  funds  would  have  been  remitted  to  the  Seller.  The  Company  expensed  the  retention  compensation  as  the  services  were  performed  in  the  post-
combination period.

Other Acquisitions

On October 12, 2018, the Company acquired Realla Ltd. ("Realla"), the operator of a commercial property listings and data management platform in the U.K.
for £12 million ( $15 million ). The purchase agreement required an initial payment of £10 million ( $13 million ), net of cash acquired, at the time of closing, and
the remainder is due one year following the acquisition date. In connection with the acquisition, the Company recorded goodwill and intangible assets of £8 million
( $10  million  )  and  £4  million  ( $5  million  ),  respectively.  The  net  assets  of  Realla  were  recorded  at  their  estimated  fair  value.  The  estimated  fair  values  are
preliminary, subject to the finalization of the Company's assessment of the fair value of certain acquired intangible assets, the final determination of net working
capital as of the acquisition date and completion of the Company's assessment of certain tax matters.

On November 8, 2018, the Company acquired Cozy Services, Ltd. ("Cozy"), a leading provider of online rental solutions that provides a broad spectrum of
services to both landlords and tenants, for $65 million , net of cash acquired. As part of the acquisition, the Company recorded goodwill and intangible assets of
$53 million and $11 million , respectively. The net assets of Cozy were recorded at their estimated fair value. The estimated fair values are preliminary, subject to
the  finalization  of  the  Company's  assessment  of  the  fair  value  of  certain  acquired  intangible  assets,  the  final  determination  of  net  working  capital  as  of  the
acquisition date and completion of the Company's assessment of certain tax matters.

Pro Forma Financial Information

The unaudited pro forma financial information presented below summarizes the combined results of operations for the Company and ForRent as though the
companies  were  combined  as  of  January  1,  2017.  The  impact  of  Realla  and  Cozy  on  the  pro  forma  financial  information  was  not  material  and  therefore  those
acquisitions  were not included.  The unaudited  pro forma financial  information  for all periods presented  includes amortization  charges from  acquired  intangible
assets,  retention  compensation,  as  referenced  above,  and  the  related  tax  effects,  along  with  certain  other  accounting  effects,  but  excludes  the  impacts  of  any
expected  operational  synergies.  The  unaudited  pro  forma  financial  information  as  presented  below  is  for  informational  purposes  only  and  is  not  necessarily
indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2017.

The unaudited pro forma financial information for the year ended months ended December 31, 2018 and 2017 combine the historical results of the Company
for the year ended months ended December 31, 2018 and 2017 , the historical results of ForRent for the period prior to the Acquisition Date, and the effects of the
pro forma adjustments listed above.

F-21

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The unaudited pro forma financial information was as follows (in thousands, except per share data):

Revenue

Net income

Net income per share - basic

Net income per share - diluted

Year Ended 
December 31,

2018

2017

1,205,584   $

1,067,742

251,196   $

103,000

6.96   $

6.89   $

3.09

3.06

$

$

$

$

The Company began integrating the ForRent sales force and operations after the closing of the acquisition as part of its efforts to create operating synergies.
As a result of these integration activities, it is impracticable to disclose revenue and earnings from ForRent from the Acquisition Date through December 31, 2018 .

5.     INVESTMENTS

The Company's investments consist of long-term variable rate debt instruments with an auction reset feature, referred to as auction rate securities ("ARS"), and

are classified as available-for-sale and are carried at fair value.

Scheduled maturities of investments classified as available-for-sale as of December 31, 2018 are as follows (in thousands):

Maturity

Due in:

2019

2020 — 2023

2024 — 2028

2029 and thereafter

Available-for-sale investments

Fair Value

  $

  $

—

—

—

10,070

10,070

The Company had no realized gains or losses on its investments during the years ended December 31, 2018 , 2017 and 2016 . Realized gains and losses from

the sale of available-for-sale securities are determined on a specific-identification basis.

As of December 31, 2018 , the amortized cost basis and fair value of investments classified as available-for-sale were as follows (in thousands):

Auction rate securities

Available-for-sale investments

Amortized
Cost

$

$

10,800   $

10,800   $

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair Value

—   $

—   $

(730)

(730)

  $

  $

10,070

10,070

As of December 31, 2017 , the amortized cost basis and fair value of investments classified as available-for-sale were as follows (in thousands):

Auction rate securities

Available-for-sale investments

Amortized
Cost

$

$

10,800   $

10,800   $

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair Value

—   $

—   $

(730)

(730)

  $

  $

10,070

10,070

The unrealized losses on the Company’s investments as of December 31, 2018 and 2017 were generated primarily from changes in interest rates and ARS that

failed to settle at auction, due to adverse conditions in the global credit markets. The losses

F-22

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

are considered temporary, as the contractual terms of these investments do not permit the issuer to settle the security at a price less than the amortized cost of the
investment.  Because  the  Company  does  not  intend  to  sell  these  instruments  and  it  is  not  more  likely  than  not  that  the  Company  will  be  required  to  sell  these
instruments prior to anticipated recovery, which may be at maturity, the Company does not consider these investments to be other-than-temporarily impaired as of
December 31, 2018 and 2017 . See Note 6 for further discussion of the fair value of the Company’s financial assets.

The components of the Company’s investments in an unrealized loss position for twelve months or longer were as follows (in thousands):

Auction rate securities

Investments in an unrealized loss position

December 31,

2018

2017

Aggregate
Fair
 Value

Gross
Unrealized
Losses

Aggregate
Fair
 Value

Gross
Unrealized
Losses

$

$

10,070   $

10,070   $

(730)

(730)

  $

  $

10,070   $

10,070   $

(730)

(730)

The Company did not have any investments in an unrealized loss position for less than twelve months as of December 31, 2018 and 2017 , respectively.

6.     FAIR VALUE

Fair  value  is  defined  as  the  price  that  would  be  received  in  the  sale  of  an  asset  or  paid  to  transfer  a  liability  in  an  orderly  transaction  between  market
participants. There is a three-tier fair value hierarchy, which categorizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable
inputs such as quoted prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than quoted prices in active markets that are either
directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its
own assumptions.

The  following  table  represents  the  Company's  fair  value  hierarchy  for  its  financial  assets  (cash  equivalents  and  investments)  measured  at  fair  value  on  a

recurring basis as of December 31, 2018 (in thousands):

Assets:

Money market funds

Auction rate securities

Total assets measured at fair value

Level 1

Level 2

Level 3

Total

$

$

590,567   $

—  

590,567   $

—   $

—  

—   $

—   $

10,070  

10,070   $

590,567

10,070

600,637

The  following  table  represents  the  Company's  fair  value  hierarchy  for  its  financial  assets  (cash  equivalents  and  investments)  measured  at  fair  value  on  a

recurring basis as of December 31, 2017 (in thousands):

Assets:

Money market funds

Auction rate securities

Total assets measured at fair value

Level 1

Level 2

Level 3

Total

$

$

586,084   $

—  

586,084   $

—   $

—  

—   $

—   $

10,070  

10,070   $

586,084

10,070

596,154

The carrying value of accounts receivable, accounts payable and accrued expenses approximates fair value.

The Company’s Level 3 assets consist of ARS, whose underlying assets are primarily student loan securities supported by guarantees from the Federal Family

Education Loan Program (“FFELP”) of the U.S. Department of Education.

F-23

 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
   
   
   
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The following table summarizes changes in fair value of the Company’s Level 3 assets from December 31, 2016 to December 31, 2018 (in thousands):

Balance at December 31, 2016

Decrease in unrealized loss included in accumulated other comprehensive loss

Balance at December 31, 2017

Decrease in unrealized loss included in accumulated other comprehensive loss

Settlements

Balance at December 31, 2018

Auction
Rate
Securities

9,952

118

10,070

—

—

10,070

$

$

ARS  are  variable  rate  debt  instruments  whose  interest  rates  are  reset  approximately  every  28  days  .  The  underlying  securities  have  contractual  maturities

greater than twenty years . The ARS are recorded at fair value.

As of December 31, 2018 , the Company held ARS with $11 million par value, all of which failed to settle at auction. The majority of these investments are of
high credit quality and are primarily student loan securities supported by guarantees from the FFELP of the U.S. Department of Education. The Company may not
be able to liquidate and fully recover the carrying value of the ARS in the near term. As a result, these securities are classified as long-term investments in the
Company’s  consolidated  balance  sheet  as  of  December  31,  2018  .  See  Note  5  for  further  discussion  of  the  scheduled  maturities  of  investments  classified  as
available-for-sale. 

While the Company continues to earn interest on its ARS investments at the contractual rate, these investments are not currently actively trading and therefore
do not currently have a readily determinable market value. The estimated fair value of the ARS no longer approximates par value. The Company used a discounted
cash flow model to determine the estimated fair value of its investment in ARS as of December 31, 2018 . The assumptions used in preparing the discounted cash
flow model include estimates for interest rates, credit spreads, timing and amount of contractual cash flows, liquidity risk premiums, expected holding periods and
default risk. The Company updates the discounted cash flow model on a quarterly basis to reflect any changes in the assumptions used in the model and settlements
of ARS investments that occurred during the period.

The only significant unobservable input in the discounted cash flow model is the discount rate. The discount rate used represents the Company's estimate of
the  yield  expected  by  a  market  participant  from  the  ARS  investments.  The  weighted  average  discount  rate  used  in  the  discounted  cash  flow  models  as  of
December 31, 2018 and 2017 was approximately 6% . Selecting another discount rate within the range used in the discounted cash flow model would not result in
a significant change to the fair value of the ARS.

Based on this assessment of fair value, as of December 31, 2018 , the Company determined there was no decline in the fair value of its ARS investments. In
addition, the ARS are of high credit quality, if the issuers are unable to successfully close future auctions and/or their credit ratings deteriorate, the Company may
be required to record additional unrealized losses in accumulated other comprehensive loss or an other-than-temporary impairment charge to earnings on these
investments.

7.     PROPERTY AND EQUIPMENT

Property and equipment consists of the following (in thousands):

Leasehold improvements

Furniture, office equipment and vehicles

Computer hardware and software

Property and equipment, gross

Accumulated depreciation and amortization

Property and equipment, net

F-24

December 31,

2018

2017

$

$

65,332   $

53,020  

74,742  

193,094  

(109,791)  

83,303   $

59,447

52,163

71,281

182,891

(98,395)

84,496

 
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Depreciation expense for property and equipment was approximately $26 million , $26 million and $24 million , for the years ended December 31, 2018 ,

2017 and 2016 , respectively.

8.     GOODWILL

The changes in the carrying amount of goodwill by operating segment consist of the following (in thousands):

Goodwill, December 31, 2016

Acquisition

Effect of foreign currency translation

Goodwill, December 31, 2017

Acquisitions

Effect of foreign currency translation

Goodwill, December 31, 2018

North America

International

Total

1,227,777   $

27,089

  $

1,254,866

25,717  

—  

1,253,494  

319,594  

—  

—  

2,874

29,963

10,344

(1,860)

1,573,088   $

38,447

  $

25,717

2,874

1,283,457

329,938

(1,860)

1,611,535

$

$

The  Company  recorded  goodwill  of  approximately  $8  million  in  connection  with  the  January  31,  2017  acquisition  of  Koa  Lei,  Inc.  (doing  business  as
Westside Rentals ®
and now known as Westside Rentals, LLC), an online marketplace specializing in Southern California real estate rentals, and its affiliated entity
Westside Credit Services, LLC, a provider of credit checks and tenant screening for landlords in the Southern California real estate rental market. The Company
recorded  goodwill  of  approximately  $15  million  in  connection  with  the  May  10,  2017  acquisition  of  certain  assets  and  assumption  of  certain  liabilities  from
Datasphere Technologies, Inc., in each case, related to the LandWatch.com ® business (collectively referred to as “LandWatch”), a leading listing site dedicated to
land and rural properties. The Company recorded goodwill of approximately $2 million in connection with the July 18, 2017 acquisition of The Screening Pros,
LLC, an online apartment leasing platform that includes tenant screening services, rental applications and payments processing and lease renewals.

The  Company  recorded  goodwill  of  approximately    $267  million   in  connection  with  the  February  21,  2018  acquisition  of  ForRent,  a  digital  advertising
service provided through a network of four multifamily websites. The Company recorded goodwill of approximately $10 million in connection with the October
12, 2018 acquisition of Realla, the operator of a commercial property listings and data management platform in the U.K., including a free-to-list search engine for
commercial  property  listings.  The  company  recorded  goodwill  of  approximately  $53  million  in  connection  with  the  November  8,  2018  acquisition  of  Cozy,  a
leading  provider  of  online  rental  solutions  that  provides  a  broad  spectrum  of  services  to  both  landlords  and  tenants,  including  property  listings,  rent  estimates,
rental applications, tenant screening, online rent payments and expense tracking.

The total amount of goodwill that is expected to be deductible for tax purposes is approximately $16 million as of December 31, 2018 .

No impairments of the Company's goodwill were recognized during the years ended December 31, 2018 , 2017 and 2016 .

F-25

 
 
 
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

9.     INTANGIBLE ASSETS

Intangible assets consist of the following (in thousands, except amortization period data):

Capitalized product development cost

Accumulated amortization

Capitalized product development cost, net

$

Building photography

Accumulated amortization

Building photography, net

Acquired technology

Accumulated amortization

Acquired technology, net

Acquired customer base

Accumulated amortization

Acquired customer base, net

Acquired trade names and other intangible assets

Accumulated amortization

Acquired trade names and other intangible assets, net

December 31,

2018

2017

Weighted-
Average
Amortization
Period
(in years)

2,173   $

(2,173)  

—  

9,035  

(8,809)  

226  

103,128  

(85,344)  

17,784  

339,574  

(199,405)  

140,169  

190,717  

(59,985)  

130,732  

2,275  

(2,262)  

13  

18,739  

(18,212)  

527  

83,469  

(79,188)  

4,281  

225,879  

(169,157)  

56,722  

167,718  

(46,369)  

121,349  

4

2

4

10

12

Intangible assets, net

$

288,911   $

182,892  

Amortization expense for intangible assets was approximately $52 million , $37 million and $46 million for the years ended December 31, 2018 , 2017 and

2016 , respectively.

In the aggregate, the Company expects the future amortization expense for intangible assets existing as of December 31, 2018 to be approximately $48 million

, $42 million , $34 million , $29 million and $26 million for the years ending December 31, 2019, 2020, 2021, 2022 and 2023, respectively.

Intangible assets are reviewed for impairment at least annually and more frequently whenever events or changes in circumstances indicate that the carrying
value of such assets may not be recoverable. No impairments of the Company's intangible assets were recognized during the years ended December 31, 2018 ,
2017 and 2016 .

F-26

 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
   
   
 
 
 
 
   
   
 
 
 
 
   
   
 
 
 
 
   
   
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

10.     LONG-TERM DEBT

On October 19, 2017, the Company entered into an amended and restated credit agreement (the ‘‘2017 Credit Agreement’’), which amended and restated in its
entirety the then-existing credit agreement dated April 1, 2014 (the "2014 Credit Agreement"). The 2017 Credit Agreement provides for a $750 million revolving
credit facility with a term of five years from a syndicate of financial institutions as lenders and issuing banks. The 2017 facility may be used for working capital
and other general corporate purposes of the Company and its subsidiaries. In connection with the transaction, the Company incurred $4 million of issuance costs.
Those costs along with the $4 million of unamortized costs related to the prior agreement were allocated between the extinguishment of the 2014 Credit Agreement
and the 2017 Credit Agreement. This allocation resulted in the Company recognizing a loss of $4 million on the extinguishment with the remaining $4 million
being deferred and amortized on a straight-line basis as interest expense over the term of the 2017 Credit Agreement.

Up  to  $20  million  of  the  revolving  credit  facility  is  available  for  the  issuance  of  letters  of  credit.  The  Company  had  an  irrevocable  standby  letter  of
credit outstanding totaling  $0.2 million  as of   December 31, 2018  and   December 31, 2017 , which was required to secure its San Francisco office lease. The
letter of credit was established in 2014 and automatically renews through January 31, 2025.

The loans under the 2017 Credit Agreement bear interest during any interest period selected by the Company, at either (i) the London interbank offered rate
for  deposits  in  U.S.  dollars  with  a  maturity  comparable  to  such  interest  period,  adjusted  for  statutory  reserves  (“LIBOR”),  plus  an  initial  spread  of  1.25% per
annum, subject to adjustment based on the First Lien Secured Leverage Ratio (as defined in the 2017 Credit Agreement) of the Company, or (ii) at the greatest of
(x) the prime rate from time to time announced by JPMorgan Chase Bank, N.A., (y) the federal funds effective rate plus half of 1% and (z) LIBOR for a one-month
interest period plus 1.00% , plus an initial spread of 0.25% per annum, subject to adjustment based on the First Lien Secured Leverage Ratio of the Company. If an
event of default occurs under the 2017 Credit Agreement, the interest rate on overdue amounts will increase by 2.00% per annum. The obligations under the 2017
Credit Agreement are guaranteed by all material subsidiaries of the Company and are secured by a lien on substantially all of the assets of the Company and its
material subsidiaries, in each case subject to certain exceptions, pursuant to security and guarantee agreements entered into on the closing date of the 2017 Credit
Agreement.

The 2017 Credit Agreement requires the Company to maintain (i) a First Lien Secured Leverage Ratio not exceeding 3.50 to 1.00 and (ii) after the incurrence
of additional indebtedness under certain specified exceptions in the 2017 Credit Agreement, a Total Leverage Ratio (as defined in the 2017 Credit Agreement) not
exceeding 4.50 to 1.00 .  The  2017  Credit  Agreement  also  includes  other  covenants,  including  ones  that  subject  to  certain  exceptions,  restrict  the  ability  of  the
Company and its subsidiaries to (i) incur additional indebtedness, (ii) create, incur, assume or permit to exist any liens, (iii) enter into mergers, consolidations or
similar transactions, (iv) make investments and acquisitions, (v) make certain dispositions of assets, (vi) make dividends, distributions and prepayments of certain
indebtedness,  and  (vii)  enter  into  certain  transactions  with  affiliates.  The  Company  was  in  compliance  with  the  covenants  in  the  2017  Credit  Agreement  as  of
December 31, 2018 .

The Company had no outstanding long-term debt at  December 31, 2018 and December 31, 2017 . For the years ended December 31, 2018 , 2017 and 2016 ,

the Company recognized interest expense, including amortization of debt issuance costs and commitment fees, on its revolving credit facility and term loan of
approximately  $3 million , $9 million and $10 million , respectively. Interest expense included amortized debt issuance costs of approximately $1 million , $2
million and $3 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The Company had  $3 million and $4 million  of deferred debt
issuance costs included in deposits and other assets at  December 31, 2018 and December 31, 2017 , respectively.

F-27

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

11.     INCOME TAXES

The components of the provision for income taxes attributable to operations consist of the following (in thousands):

Year Ended December 31,

2018

2017

2016

Current:

Federal

State

Foreign

Total current

Deferred:

Federal

State

Foreign

Total deferred

$

36,167   $

41,453   $

5,140  

708  

42,015  

6,576  

(2,582)  

(328)  

3,666  

3,518  

295  

45,266  

(7,917)  

4,695  

319  

(2,903)  

Total provision for income taxes

$

45,681   $

42,363   $

The components of deferred tax assets and liabilities consist of the following (in thousands):

32,198

3,682

76

35,956

12,586

3,014

35

15,635

51,591

Deferred tax assets:

Reserve for bad debts

Accrued compensation

Stock compensation

Net operating losses

Accrued reserve and other

Deferred rent

Deferred gain on the sale of building

Research and development credits

Total deferred tax assets, prior to valuation allowance

Valuation allowance

Total deferred tax assets, net of valuation allowance

Deferred tax liabilities:

Deferred commission costs, net 

Prepaid expenses

Property and equipment, net

Intangible assets, net

Total deferred tax liabilities

Net deferred tax assets (liabilities)

December 31,

2018

2017

$

1,457   $

4,803  

10,041  

26,349  

1,773  

5,928  

4,140  

6,331  

60,822  

1,636

6,706

10,568

25,899

1,578

6,533

4,741

—

57,661

(14,246)  

46,576  

(13,032)

44,629

(19,314)

(2,204)  

(5,367)  

(82,079)  

(108,964)  

—

(1,239)

(6,229)

(43,800)

(51,268)

$

(62,388)   $

(6,639)

As  of  December  31,  2018  and 2017 ,  a  valuation  allowance  has  been  established  for  certain  deferred  tax  assets  due  to  the  uncertainty  of  realization.  The
valuation allowance as of December 31, 2018 and 2017 includes an allowance for unrealized losses on ARS investments, foreign deferred tax assets and state net
operating  losses  and  tax  credits.  The  valuation  allowance  for  the  deferred  tax  asset  for  unrealized  losses  on  ARS  has  been  recorded  as  an  adjustment  to
accumulated other comprehensive loss.

The  Company  established  the  valuation  allowance  because  it  is  more  likely  than  not  that  a  portion  of  the  deferred  tax  asset  for  certain  items  will  not  be

realized based on the weight of available evidence. A valuation allowance was established for the

F-28

 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
   
 
 
 
 
 
   
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

unrealized losses on securities as the Company has not historically generated capital gains, and it is uncertain whether the Company will generate sufficient capital
gains in the future to absorb the capital losses. A valuation allowance was established for the foreign deferred tax assets due to the cumulative loss in recent years
in  those  jurisdictions.  The  Company  has  not  had  sufficient  taxable  income  historically  to  utilize  the  foreign  deferred  tax  assets,  and  it  is  uncertain  whether  the
Company will generate sufficient taxable income in the future to utilize the deferred tax assets. Similarly, the Company has established a valuation allowance for
net operating losses and tax credits in certain states where it is uncertain whether the Company will generate sufficient taxable income to utilize the net operating
losses and tax credits before they expire.

The  Company’s  change  in  valuation  allowance  was  an  increase  of  approximately  $1  million  for  the  year  ended  December  31,  2018  and  a  decrease  of
approximately $4  million  for  the  year  ended  December  31,  2017  .  The  increase for  the  year  ended  December  31,  2018  is  due  to  an  increase  in  the  valuation
allowance  for  state  tax  credits  related  to  the  D.C.  qualified  high  technology  company  credit  of  approximately  $1  million  .  The  increase  for  the  year  ended
December  31,  2017  is  due  to  an  increase  in  the  valuation  allowance  for  foreign  deferred  tax  assets  related  to  foreign  net  operating  losses  of  approximately  $4
million .

The Company had U.S. income before income taxes of approximately $294 million , $167 million and $135 million for the years ended December 31, 2018 ,
2017 and 2016 , respectively. The Company had foreign losses before income taxes of approximately $10 million and $2 million for the years ended December 31,
2018 and December 31, 2017 , respectively. The Company had foreign income before income taxes of approximately $2 million for the year ended December 31,
2016 .

The Company’s provision for income taxes resulted in effective tax rates that varied from the statutory federal income tax rate as follows (in thousands):

Expected federal income tax provision at statutory rate

State income taxes, net of federal benefit

Foreign income taxes, net effect

Increase (decrease) in valuation allowance

Tax rate changes

Research credits

Excess tax benefit

Tax reserves

Other adjustments

Income tax expense

Year Ended December 31,

2018

2017

2016

$

59,643   $

10,312  

(315)  

1,214  

141  

(15,373)  

(14,227)  

1,870  

2,416  

57,770   $

4,776  

(3,540)  

3,624  

(7,340)  

(20,547)  

(7,010)  

12,646  

1,984  

$

45,681   $

42,363   $

47,832

3,638

(31)

(103)

283

(920)

—

(150)

1,042

51,591

The Company’s U.K. subsidiaries with foreign losses are disregarded entities for U.S. income tax purposes. Accordingly, the losses from these disregarded
entities  are  included  in  the  Company’s  consolidated  federal  income  tax  provision  at  the  statutory  rate.  Federal  income  taxes  attributable  to  income  from  these
disregarded entities are reduced by foreign taxes paid by those disregarded entities.

The Company recognized an income tax benefit during the year ended December 31, 2018 for state research credits of $14 million for tax years December 31,
2013 through December 31, 2018. These research credits relate to eligible activities including the development of new products, product enhancements and new or
improved processes.

The Company has net operating loss carryforwards for international income tax purposes of approximately $53 million , which do not expire. The Company
has federal net operating loss carryforwards of approximately $44 million that begin to expire in  2020 , state net operating loss carryforwards with a tax value of
approximately $4 million that begin to expire in 2020 and state income tax credit carryforwards with a tax value of approximately $11 million primarily relating to
state  research  and development  credits  and the D.C. qualified  high technology  company tax credit  that begin to expire  in 2020 . The Company realized a cash
benefit  relating  to  the  use  of  its  tax  loss  carryforwards  of  approximately  $6  million  ,  $7  million  and  $5  million  in  December  31,  2018  ,  2017  and  2016  ,
respectively.

F-29

 
 
 
 
 
 
   
   
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The following table summarizes the activity related to the Company’s unrecognized tax benefits (in thousands):

Unrecognized tax benefit as of December 31, 2015                                                                                                                

$

Increase for current year tax positions

Decrease for prior year tax positions

Expiration of the statute of limitation for assessment of taxes

Unrecognized tax benefit as of December 31, 2016                                                                                                         

Increase for current year tax positions

Decrease for prior year tax positions

Expiration of the statute of limitation for assessment of taxes

Unrecognized tax benefit as of December 31, 2017                                                                                                               

Increase for current year tax positions

Decrease for prior year tax positions

Expiration of the statute of limitation for assessment of taxes

Unrecognized tax benefit as of December 31, 2018                                                                                                               

$

7,664

368

(6,115)

(74)

1,843

12,620

(34)

(66)

14,363

9,561

(70)

(1,482)

22,372

Approximately $22 million and $14 million of the unrecognized tax benefits as of December 31, 2018 and 2017 , respectively, would favorably affect the
annual  effective  tax  rate,  if  recognized  in  future  periods.  The  increase  for  current  year  tax  positions  of  $9  million  for  the  year  ended  December  31,  2018  is
primarily attributable to research credits and state apportionment methodology reserve related to the ForRent acquisition. The decrease of $1 million for the year
ended December  31, 2018 is primarily  attributable  to the  expiration  of the statute  of limitation  on the state  apportionment  methodology  reserve.  The Company
recognized $224,000 for  interest  and  penalties  in  its  consolidated  statement  of  operations  for  the  year  ended  December  31,  2018  .  The  Company  recognized
$72,000 for interest and penalties in its consolidated statement of operations for the year ended December 31, 2017 . The Company reversed interest and penalties
of $416,000 in its consolidated statement of operations for the year ended December 31, 2016 . The Company had liabilities of $430,000 , $205,000 and $133,000
for interest and penalties in its consolidated balance sheets as of December 31, 2018 , 2017 , 2016 respectively. The Company does not anticipate the amount of the
unrecognized tax benefits will change significantly over the next twelve months.

The Company is subject to taxation in the U.S. federal jurisdiction and various states and foreign jurisdictions. The Company’s federal income tax returns for
tax years 2013 through 2017 remain open to examination. The Company is under Internal Revenue Service examination for tax year 2013 related to the research
and development credit. Most of the Company’s state income tax returns for tax years 2015 through 2017 remain open to examination. For states that have a four-
year statute of limitations, the state income tax returns for tax years 2014 through 2017 remain open to examination. The Company’s U.K. income tax returns for
tax years 2013 through 2017 remain open to examination. The Company believes that an adequate provision has been made for any adjustments that may result
from tax examinations.

On December  22, 2017, the  U.S. enacted  the  Tax Cuts and Jobs Act (the  “Tax Act”),  which significantly  changed  U.S. tax law. The Tax Act lowered  the
Company’s U.S. statutory federal income tax rate from  35%  to  21%  effective January 1, 2018, while also imposing a deemed repatriation tax on deferred foreign
income.  The  Tax  Act  also  created  a  new  minimum  tax  on  certain  future  foreign  earnings  under  section  951(a)  and  allows  foreign-derived  intangible  income
deduction under section 250(a). The Securities and Exchange Commission staff issued Staff Accounting Bulletin 118, Income Tax Accounting Implications of the
Tax Cuts and Jobs Act, ("SAB 118"), which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provided a measurement period of up to
one year from the Tax Act enactment date for companies to complete the accounting under ASC 740.

As of December 31, 2018, the Company's accounting for income tax effects of the Tax Act is complete and the Company has reflected all income tax effects
of the Tax Act in the financial statements and related disclosures. Any additional guidance issued by the U.S. Treasury Department, the IRS, and other standard-
setting bodies, may result in the Company deciding to make adjustments. Those adjustments may materially impact the provision for income taxes in the period in
which the adjustments are made.

As of December 31, 2018 the Company has evaluated the global intangible low taxed income inclusion under section 951(a)("GILTI"). Under U.S. GAAP, the
Company is allowed to make an accounting policy choice of either (1) treating GILTI as a current-period expense when incurred (the “period cost method”) or (2)
factoring such amounts into the measurement of deferred taxes (the “deferred method”). The Company elected to record the GILTI income inclusion under the
current-period cost method.

F-30

 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

12.     COMMITMENTS AND CONTINGENCIES

The Company leases office facilities and office equipment under various non-cancelable operating leases. The leases contain various renewal options. Rent

expense for the years ended December 31, 2018 , 2017 and 2016 , was approximately $29 million , $26 million and $22 million , respectively.

Future minimum lease payments as of December 31, 2018 are as follows (in thousands): 

2019

2020

2021

2022

2023

Thereafter

Total future minimum lease payments

$

30,485

29,255

27,421

25,634

24,515

31,768

$

169,078

Currently, and from time to time, the Company is involved in litigation  incidental to the conduct of its business. In accordance  with GAAP, the Company
records a provision for a liability when it is both probable that a liability has been incurred and the amount can be reasonably estimated. While it is reasonably
possible that an unfavorable outcome may occur as a result of one or more of the Company’s current litigation matters, at this time management has concluded that
the resolutions of these matters are not expected to have a material adverse effect on the Company's consolidated financial position, future results of operations or
liquidity. Legal defense costs are expensed as incurred.

13.     SEGMENT REPORTING

Segment Information

The  Company  manages  its  business  geographically  in  two operating  segments,  with  the  primary  areas  of  measurement  and  decision-making  being  North
America,  which  includes  the  U.S.  and  Canada,  and  International,  which  includes  the  U.K.,  Spain,  Germany  and  France.  Management  relies  on  an  internal
management reporting process that provides revenue and operating segment net income before interest and other income (expense), loss on debt extinguishment,
income  taxes,  depreciation  and  amortization  (“EBITDA”).  Management  believes  that  operating  segment  EBITDA  is  an  appropriate  measure  for  evaluating  the
operational performance of the Company’s operating segments. EBITDA is used by management to internally measure operating and management performance
and to evaluate the performance of the business. However, this measure should be considered in addition to, not as a substitute for or superior to, income from
operations or other measures of financial performance prepared in accordance with GAAP. 

Summarized information by operating segment consists of the following (in thousands):

EBITDA

North America

International

Total EBITDA

Year Ended December 31,

2018

2017

2016

$

$

358,036   $

236,906   $

(6,729)  

553  

351,307   $

237,459   $

210,901

4,169

215,070

F-31

 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS  

The reconciliation of net income to EBITDA consists of the following (in thousands):

Net income

Amortization of acquired intangible assets in cost of revenues

Amortization of acquired intangible assets in operating expenses

Depreciation and other amortization

Interest and other income

Interest and other expense

Loss on debt extinguishment

Income tax expense

EBITDA

Summarized information by operating segment consists of the following (in thousands):

Year Ended December 31,

2018

2017

2016

$

238,334   $

122,695   $

20,586  

30,881  

26,276  

(13,281)  

2,830  

—  

45,681  

19,707  

17,684  

26,252  

(4,044)  

9,014  

3,788  

42,363  

$

351,307   $

237,459   $

85,071

22,819

22,731

24,615

(1,773)

10,016

—

51,591

215,070

Property and equipment, net

North America

International

Total property and equipment, net

Goodwill

North America

International

Total goodwill

Assets

North America

International

Total assets

Liabilities

North America

International

Total liabilities

14.     STOCKHOLDERS' EQUITY

Preferred Stock

December 31,

2018

2017

79,493   $

3,810  

83,303   $

79,736

4,760

84,496

1,573,088   $

1,253,494

38,447  

29,963

1,611,535   $

1,283,457

3,253,035   $

2,816,156

59,922  

57,285

3,312,957   $

2,873,441

272,776   $

18,239  

291,015   $

201,831

20,360

222,191

$

$

$

$

$

$

$

$

The Company has 2 million shares of preferred stock, $0.01 par value, authorized for issuance as of December 31, 2018 . The Board of Directors may issue

the preferred stock from time to time as shares of one or more classes or series.

Common Stock

The Company has 60 million shares of common stock, $0.01 par value, authorized for issuance. Dividends may be declared and paid on the common stock,
subject in all cases to the rights and preferences of the holders of preferred stock and authorization by the Board of Directors. In the event of liquidation or winding
up of the Company and after the payment of all preferential amounts required to be paid to the holders of any series of preferred stock, any remaining funds shall
be distributed among the holders of the issued and outstanding common stock.

F-32

 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Equity Offering

In October 2017, the Company completed a public equity offering of 3.3 million shares of common stock for  $260  per share. Net proceeds from the public
equity offering were approximately  $834 million , after deducting approximately  $29 million  of underwriting discounts and other fees. The Company used net
proceeds from the public equity offering to fund the costs of strategic acquisitions, to finance business growth and for working capital and other general corporate
purposes.  The  Company  expects  to  use  any  remaining  net  proceeds  from  the  equity  offering  to  fund  all  or  a  portion  of  the  costs  of  any  additional  strategic
acquisitions  the  Company  determines  to  pursue,  to  finance  the  growth  of  its  business  and  for  working  capital  and  other  general  corporate  purposes.  General
corporate  purposes  may  include  additions  to  working  capital,  capital  expenditures,  repayment  of  debt,  investments  in  the  Company’s  subsidiaries,  possible
acquisitions and the repurchase, redemption or retirement of securities, including the Company’s common stock.

15.     NET INCOME PER SHARE

The following table sets forth the calculation of basic and diluted net income per share (in thousands except per share data):

Numerator:

Net income

Denominator:

Year Ended December 31,

2018

2017

2016

$

238,334   $

122,695   $

85,071

Denominator for basic net income per share — weighted-average outstanding shares

36,058  

33,200  

32,167

Effect of dilutive securities:

Stock options and restricted stock awards

Denominator for diluted net income per share — weighted-average outstanding shares

Net income per share — basic 

Net income per share — diluted 

390  

36,448  

359  

33,559  

$

$

6.61   $

6.54   $

3.70   $

3.66   $

269

32,436

2.64

2.62

Stock options to purchase approximately 64,000 , 87,000 and 194,000 shares that were outstanding for the years ended December 31, 2018 , December 31,

2017 and December 31, 2016 , respectively, were not included in the computation of diluted net income per share because the inclusion of the potentially dilutive
common  shares  would  have  an  anti-dilutive  effect.  Shares  underlying  restricted  common  stock  awards  that  vest  based  on  Company  performance  and  service
conditions that have not been achieved as of the end of the period are not included in the computation of basic or diluted earnings per share. Shares underlying
restricted stock units that vest based on Company service conditions, that have not been achieved as of the end of the period are not included in the computation of
basic  or  diluted  earnings  per  share.  The  following  table  summarizes  the  shares  underlying  the  performance-based  restricted  stock  awards  and  service-based
restricted stock units excluded from the basic and diluted calculation (in thousands):

Performance-based restricted stock awards

Service-based restricted stock units

Total shares excluded from computation

16.     EMPLOYEE BENEFIT PLANS

Stock Incentive Plans

Year Ended December 31,

2018

2017

2016

53  

1  

54  

58  

1  

59  

59

1

60

In  April  2007,  the  Company’s  Board  of  Directors  adopted  the  CoStar  Group,  Inc.  2007  Stock  Incentive  Plan  (as  amended,  the  “2007  Plan”),  subject  to
stockholder approval, which was obtained on June 7, 2007. In April 2016, the Company’s Board of Directors adopted the CoStar Group, Inc. 2016 Stock Incentive
Plan (as amended, the “2016 Plan”), subject to stockholder approval, which was obtained on June 9, 2016. All shares of common stock that were authorized for
issuance under the 2007 Plan that, as

F-33

 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

of June 9, 2016, remained available for issuance under the 2007 Plan (excluding shares subject to outstanding awards) were rolled into the 2016 Plan and, as of that
date, no shares of common stock were available for new awards under the 2007 Plan. The 2007 Plan continues to govern unexercised and unexpired awards issued
under the 2007 Plan prior to June 9, 2016. The 2007 Plan provided for the grant of stock options, restricted stock, restricted stock units and stock appreciation
rights to officers, directors and employees of the Company and its subsidiaries. Stock options granted under the 2007 Plan could be incentive or non-qualified, and
except  in limited  circumstances  related  to a merger  or other  acquisition,  the exercise  price  for a stock option  may not be less than the fair  market  value  of the
Company’s  common  stock  on  the  date  of  grant.  The  vesting  period  of  the  options,  restricted  stock  and  restricted  stock  unit  grants  under  the  2007  Plan  was
determined by the Board of Directors or a committee thereof and was generally three to four years . In some cases, vesting of restricted stock awards under the
2007 Plan is subject to performance conditions. Upon the occurrence of a Change of Control, as defined in the 2007 Plan, all outstanding unexercisable options and
restricted stock grants under the 2007 Plan immediately become exercisable.

The 2016 Plan provides for the grant of stock options, restricted stock, restricted stock units, and stock appreciation rights to officers, directors and employees
of the Company and its subsidiaries. Stock options granted under the 2016 Plan may be non-qualified or may qualify as incentive stock options. Except in limited
circumstances related to a merger or other acquisition, the exercise price for an option may not be less than the fair market value of the Company’s common stock
on  the  date  of  grant.  The  vesting  period  for  each  grant  of  options,  restricted  stock,  restricted  stock  units  and  stock  appreciation  rights  under  the  2016  Plan  is
determined by the Board of Directors or a committee  thereof  and is generally  three to four years , subject to minimum vesting periods for restricted  stock and
restricted stock units of at least one year . In some cases, vesting of awards under the 2016 Plan may be based on performance conditions. The Company has issued
and/or  reserved  the  following  shares  of  common  stock  for  issuance  under  the  2016  Plan:  (a)  1,450,000  shares  of  common  stock,  plus  (b)  815,464  shares  of
common stock that were authorized for issuance under the 2007 Plan that, as of June 9, 2016, remained available for issuance under the 2007 Plan (not including
any Shares that were subject as of such date to outstanding awards under the 2007 Plan), and (c) any shares of common stock subject to outstanding awards under
the 2007 Plan as of June 9, 2016, that on or after such date cease for any reason to be subject to such awards (other than by reason of exercise or settlement of the
awards to the extent they are exercised for or settled in vested and nonforfeitable shares). Unless terminated sooner, the 2016 Plan will terminate in June 2026, but
will continue to govern unexercised and unexpired awards issued under the 2016 Plan prior to that date. Approximately 2 million shares were available for future
grant under the 2016 Plan as of December 31, 2018 .

At December 31, 2018 , there was approximately $66 million of unrecognized compensation cost related to stock incentive plans, net of estimated forfeitures,

which the Company expects to recognize over a weighted-average-period of 2.4 years .

F-34

Stock Options

Option activity was as follows:

Outstanding at December 31, 2015

Granted

Exercised

Canceled or expired

Outstanding at December 31, 2016

Granted

Exercised

Outstanding at December 31, 2017

Granted

Exercised

Canceled or expired

Outstanding at December 31, 2018

Exercisable at December 31, 2016

Exercisable at December 31, 2017

Exercisable at December 31, 2018

COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Number of
Shares

Range of 
Exercise Price

Weighted-
Average
Exercise
Price

Weighted-
Average
Remaining
Contract
Life (in years)

Aggregate
Intrinsic
Value
(in thousands)

400,077  

82,400  

(29,285)  

(13,034)  

440,158  

95,500  

(81,815)  

453,843  

82,500  

(177,299)  

(14,768)  

344,276  

284,489  

278,239  

185,405  

$36.48 - $201.04   $

$182.75 - $182.75   $

$36.48 - $201.04   $

$193.69 - $201.04   $

$36.48 - $201.04   $

$204.91   $

$36.48 - $201.04   $

$36.73 - $204.91   $

342.13   $

$36.73 - $204.91   $

$182.75 - $342.13   $

$36.73 - $342.13   $

$36.48 - $201.04   $

$36.73 - $201.04   $

$54.51 - $204.91   $

122.30    

182.75    

112.78    

195.78    

132.08    

204.91    

83.07    

156.24  

342.13    

125.16    

261.20    

212.28  

100.94  

130.91  

165.31  

7.03   $

43,418

5.79   $

31,895

The aggregate intrinsic value is calculated as the difference between (i) the closing price of the common stock at the end of the period and (ii) the exercise
prices of the underlying awards, multiplied by the shares underlying options as of the end of the period that had an exercise price less than the closing price on that
date. Options to purchase 177,299 , 81,815 , and 29,285 , shares were exercised during the years ended 2018 , 2017 and 2016 , respectively. The aggregate intrinsic
value  of  options  exercised,  determined  as  of  the  date  of  option  exercise,  was  approximately  $45  million  ,  $13  million  and  $3  million  for  the  years  ended
December 31, 2018 , 2017 and 2016 , respectively.

The weighted-average grant date fair value of each option granted during the years ended December 31, 2018 , 2017 and 2016 using the Black-Scholes option-

pricing model was $101.02 , $59.06 and $54.34 , respectively.

The Company estimated the fair value of each option granted on the date of grant using the Black-Scholes option-pricing model, using the assumptions in the

following table:

Dividend yield

Expected volatility

Risk-free interest rate

Expected life (in years)

Year Ended December 31,

2018

2017

2016

0%  

28%  

3%  

5

0%  

28%  

2%  

5

0%

31%

1%

5

The expected dividend yield is determined based on the Company's past cash dividend history and anticipated future cash dividend payments. The Company
has never declared or paid any dividends on its common stock and does not anticipate paying any dividends on its common stock during the foreseeable future, but
intends  to  retain  any  earnings  for  future  growth  of  its  business.  Expected  volatility  is  calculated  based  on  historical  volatility  of  the  daily  closing  price  of  the
Company's common stock over a period consistent with the expected life of the options granted. The risk-free interest rate is based on the U.S. Treasury rate with
terms similar to the expected life of the options granted. The expected life for the options is determined based on multiple factors,

F-35

 
 
 
 
 
 
   
   
   
   
   
   
   
 
   
   
   
 
 
   
   
   
   
     
 
 
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

including  historical  employee  behavior  patterns  of  exercising  options  and  post-employment  termination  behavior  as  well  as  expected  future  employee  option
exercise patterns.

The following table summarizes information regarding options outstanding at December 31, 2018 :

Range of
Exercise Price

 Number of
Shares

 Options Outstanding

Weighted-Average
Remaining
Contractual Life
(in years)

 Options Exercisable

Weighted-
Average
Exercise Price

Number of
Shares

Weighted-
Average 
Exercise   Price

$54.51 - $78.33

$78.34 - $142.45

$142.46 - $188.22

$188.23 - $197.37

$197.38 - $202.98

$202.99 - $273.52

$273.53 - $342.13

$54.51 - $342.13

Restricted Stock Awards

300  

58,844  

57,768  

34,264  

34,600  

82,500  

76,000  

344,276  

1.92   $

4.19   $

7.19   $

6.17   $

5.16   $

8.16   $

9.16   $

7.03   $

54.51  

102.16  

182.75  

193.69  

201.04  

204.91  

342.13  

212.28  

300   $

58,844   $

33,033   $

34,264   $

34,600   $

24,364   $

—   $

185,405   $

54.51

102.16

182.75

193.69

201.04

204.91

—

165.31

In  February  2018,  March  2017  and  March  2016,  the  Compensation  Committee  of  the  Board  of  Directors  of  the  Company  approved  grants  of  restricted
common stock to the executive officers that vest based on the Company’s achievement of a three-year cumulative revenue goal established at the grant date, and
are subject to forfeiture in the event the foregoing performance condition is not met by the end of each respective three-year period. The number of shares that may
be earned ranges between 0% (if the specified threshold performance level is not attained) and 200% (if performance meets or exceeds the maximum achievement
level) of the target award. If actual performance exceeds the pre-established threshold, the number of shares earned is calculated based on the relative performance
between  specified  levels  of  achievement.  These  awards  support  the  Company’s  goals  of  aligning  executive  incentives  with  long-term  stockholder  value  and
ensuring that executive officers have a continuing stake in the long-term success of the Company.

These grants of restricted common stock are subject to continuing employment requirements and to a market condition. The actual number of shares that vest
at the end of the respective three-year period is determined based on the Company’s achievement of the three -year performance goals described above, as well as
its  TSR  relative  to  the  Russell  1000  Index  over  the  same  three-year  performance  period.  At  the  end  of  the  three-year  performance  period,  if  the  performance
condition is achieved at or above the pre-established threshold, the number of shares earned is further adjusted by a TSR payout percentage, which ranges between
80% and 120% , based on the Company’s TSR performance relative to that of the Russell 1000 Index over the respective three-year period. The Company granted
a  total  of  26,160  ,  32,160  and  25,680  shares  of  performance-based  restricted  common  stock  during  the  years  ended  December  31,  2018  ,  2017  and  2016  ,
respectively.

The Company estimates the fair value of its performance-based restricted common stock awards with a market condition on the date of grant using a Monte-
Carlo simulation valuation model. This pricing model uses multiple simulations to evaluate the probability of the Company achieving various stock price levels to
determine the expected TSR performance ranking. Expense is only recorded for awards that are expected to vest, net of estimated forfeitures. The assumptions
used to estimate the fair value of performance-based restricted common stock awards with a market condition granted were as follows:

Dividend yield

Expected volatility

Risk-free interest rate

Expected life (in years)

Year Ended December 31,

2018

2017

2016

0%  

28%  

2%  

3

0%  

28%  

2%  

3

0%

28%

1%

3

Weighted-average grant date fair value

$

342.13

  $

218.59

  $

184.97

F-36

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The expected dividend yield is determined based on the Company's past cash dividend history and anticipated future cash dividend payments. The Company
has never declared or paid any dividends on its common stock and does not anticipate paying any dividends on its common stock during the foreseeable future, but
intends  to  retain  any  earnings  for  future  growth  of  its  business.  Expected  volatility  is  calculated  based  on  historical  volatility  of  the  daily  closing  price  of  the
common stock of the companies within the Russell 1000 Index over a period consistent with the expected life of the performance-based restricted common stock
awards  with  a  market  condition.  The  risk-free  interest  rate  is  based  on  the  U.S.  Treasury  rate  with  terms  similar  to  the  expected  life  of  the  performance-based
restricted  common  stock  awards  with  a  market  condition.  The  expected  life  is  consistent  with  the  performance  measurement  period  of  the  performance-based
restricted common stock awards with a market condition.

As of December 31, 2018 , the Company reassessed the probability of achieving the performance and market conditions and determined that it was probable
that  the  performance  and  market  conditions  for  the  2018,  2017  and  2016  performance-based  restricted  common  stock  awards  would  be  met  by  their  forfeiture
dates.  As  a  result,  the  Company  recorded  a  total  of  approximately  $5  million  , $5  million  and $3  million  of  stock-based  compensation  expense  related  to  the
performance-based restricted common stock awards with a market condition for the years ended December 31, 2018 , 2017 and 2016 , respectively. The Company
expects to record an aggregate amount of stock-based compensation expense related to the performance-based restricted common stock awards of approximately
$7 million over the periods 2019 , 2020 and 2021 .

The following table presents unvested restricted stock awards activity for the year ended December 31, 2018 :

Restricted Stock Awards — without
Market Condition

Restricted Stock Awards — with Market
Condition

Number of
Shares

Weighted-Average
Grant Date
Fair Value per
Share

Number of
Shares

Weighted-Average
Grant Date
Fair Value per
Share

363,883   $

134,209   $

(151,995)   $

(41,936)   $

304,161   $

206.59  

358.51  

193.70  

258.19  

272.95  

85,200   $

26,160   $

(27,360)   $

(7,680)   $

76,320   $

205.08

380.24

361.20

361.20

193.44

Unvested restricted stock awards at December 31,
2017                                   

Granted

Vested

Canceled

Unvested restricted stock awards at December 31, 2018

Restricted Stock Units

The following table presents unvested restricted stock units activity for the year ended December 31, 2018 :

Unvested restricted stock units at December 31, 2017

Granted

Vested

Canceled

Unvested restricted stock units at December 31, 2018

Management Stock Purchase Plan

Number of
Shares

Weighted-Average
Grant Date
Fair Value per
Share

962

214

(324)

  $

  $

  $

—   $

852

  $

190.27

342.13

189.08

—

228.86

The Board of Directors adopted the Company’s Management Stock Purchase Plan (the “MSPP”) in December 2017 with the intent of providing selected key
employees of the Company and its subsidiaries, including the Company's executive officers, the opportunity to defer a portion of their cash incentive compensation
and to align management and stockholder interests through awards of Deferred Stock Units (“DSUs”) under the MSPP and awards of matching restricted stock
units (“Matching RSUs”) issued under the Company 2016 Plan. Commencing with cash incentive compensation for calendar year 2018, participants were

F-37

 
 
 
 
 
 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

permitted to elect to defer up to 100% of their annual incentive bonus earned during the calendar year or commissions earned from March through December of
2018  by  submitting  an  irrevocable  election  in  accordance  with  Section  409A  of  the  Internal  Revenue  Code,  as  amended.  On  the  date  the  incentive  bonus  or
commission  would  otherwise  be  paid  in  cash  (typically  during  the  following  calendar  year),  the  Company  will  award  to  the  participant  DSUs  representing  a
number of shares of common stock having an aggregate fair market value on that date equal to the amount of compensation elected to be deferred under the MSPP.
On the same date the DSUs are awarded, a participant will receive a grant of Matching RSUs covering a number of shares of common stock equal to 100% of the
DSUs granted. The expense related to the DSUs will be recognized at the grant date and the expense related to the Matching RSUs will be recognized over the four
year vesting period following the grant date. There were no grants of DSUs or Matching RSUs and no expense recognized under the MSPP in 2018.

Employee 401(k) Plan

The Company maintains a 401(k) Plan (the “401(k)”) as a defined contribution retirement plan for all eligible employees. The 401(k) provides for tax-deferred
contributions  of employees’  salaries,  limited  to a maximum  annual amount as established  by the IRS. In addition to the traditional  401(k), effective  January 1,
2015,  eligible  employees  have  the  option  of  making  an  after-tax  contribution  to  a  Roth  401(k)  plan  or  a  combination  of  both.  In  2018 , 2017 and 2016 , the
Company matched 100% of employee contributions up to a maximum of 4% of total compensation. Amounts contributed to the 401(k) by the Company to match
employee contributions for the years ended December 31, 2018 , 2017 and 2016 were approximately $12 million , $10 million and $9 million , respectively. The
Company had no administrative expenses in connection with the 401(k) plan for the years ended December 31, 2018 , 2017 and 2016 , respectively.

Employee Pension Plan

The  Company  maintains  a  Group  Personal  Pension  Plan  (the  “Plan”)  for  all  eligible  employees  in  the  Company’s  U.K.  offices.  The  Plan  is  a  defined
contribution plan. Employees are eligible to contribute a portion of their salaries, subject to a maximum annual amount as established by Her Majesty's Revenue
and Customs. In 2018 , 2017 and 2016 , the Company's matching contribution was based on the percentage contributed by the employee, up to a maximum of 6%
of total compensation. Amounts contributed to the Plan by the Company to match employee contributions for the years ended December 31, 2018 , 2017 and 2016
, were approximately $0.5 million, $0.4 million and $0.4 million respectively.

Registered Retirement Savings Plan

As of January 1, 2015, the Company introduced a registered retirement savings plan (“RRSP”) for all eligible employees in the Company’s Canadian offices.
In 2017, 2016 and 2015, the Company matched 100% of employee contributions up to a maximum of 4% of total compensation. Amounts contributed to the RRSP
by the Company to match employee contributions for the years ended December 31, 2018 , 2017 and 2016 were approximately $ 58,000 , $43,000 and $10,000
respectively.

 Employee Stock Purchase Plan

As of August 1, 2006, the Company introduced an Employee Stock Purchase Plan (“ESPP”), pursuant to which eligible employees participating in the plan
authorize  the  Company  to  withhold  specified  amounts  from  the  employees’  compensation  and  use  the  withheld  amounts  to  purchase  shares  of  the  Company's
common stock at 90% of the market price. Participating employees are able to purchase common stock under this plan during each offering period. An offering
period begins the second Saturday before each of the Company’s regular pay dates and ends on each of the Company’s regular pay dates. On June 3, 2015, the
Company’s  stockholders  approved  an  amendment  to  the  ESPP  to  increase  the  number  of  shares  available  for  purchase  under  the  ESPP  by  100,000 shares. On
September  14, 2015,  the  Company  registered  the  issuance  of  these  additional  shares  under  the  ESPP pursuant  to  the  registration  statement  filed  September  14,
2015. There were 65,174 and 80,022 shares available for purchase under the ESPP as of December 31, 2018 and 2017 , respectively, and approximately 14,848 and
13,790 shares of the Company’s common stock were purchased under the ESPP during 2018 and 2017 , respectively.  

F-38

 
 
 
COSTAR GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

17.     QUARTERLY RESULTS OF OPERATIONS

The following is a summary of the unaudited quarterly results of operations for the years ended December 31, 2018 and 2017 . Information about prior period

acquisitions and the adoption of recent accounting pronouncements that may affect the comparability of the quarterly financial information presented below are
included in Note 2 and Note 4 .

Mar. 31

Jun. 30

Sep. 30

Dec. 31

2018

$

273,718   $

297,018   $

305,525   $

Revenues

Cost of revenues

Gross profit

Operating expenses

Income from operations

Interest and other income

Interest and other expense

Income before income taxes

Income tax expense

Net income

Net income per share — basic

Net income per share — diluted

Revenues

Cost of revenues

Gross profit

Operating expenses

Income from operations

Interest and other income

Interest and other expense

Loss on debt extinguishment

Income before income taxes

Income tax expense

Net income

Net income per share — basic

Net income per share — diluted

62,477  

211,241  

157,796  

53,445  

2,987  

(690)  

55,742  

3,511  

67,136  

229,882  

186,108  

43,774  

2,652  

(728)  

45,698  

1,863  

72,072  

233,453  

162,765  

70,688  

3,035  

(717)  

73,006  

14,247  

52,231   $

43,835   $

58,759   $

1.46   $

1.44   $

1.63   $

1.61   $

1.22   $

1.20   $

2017

315,571

68,248

247,323

141,666

105,657

4,607

(695)

109,569

26,060

83,509

2.31

2.29

Mar. 31

Jun. 30

Sep. 30

Dec. 31

226,553   $

237,153   $

247,533   $

51,346  

175,207  

137,545  

37,662  

429  

(2,686)  

—  

35,405  

13,275  

55,273  

181,880  

153,997  

27,883  

605  

(2,693)  

—  

25,795  

3,611  

55,483  

192,050  

134,537  

57,513  

555  

(2,901)  

—  

55,167  

20,990  

22,130   $

22,184   $

34,177   $

0.69   $

0.68   $

0.68   $

0.68   $

1.05   $

1.04   $

253,991

58,301

195,690

144,932

50,758

2,455

(734)

(3,788)

48,691

4,487

44,204

1.24

1.22

F-39

$

$

$

$

$

$

$

 
 
 
 
 
 
 
 
 
 
SUBSIDIARIES OF THE REGISTRANT

EXHIBIT 21.1

     a) CoStar Realty Information, Inc., a Delaware corporation

     b) CoStar Limited, a U.K. company

     c) CoStar UK Limited, a U.K. company

d) Grecam S.A.S., a France Societée par Actions Simplifiée

e) CoStar Portfolio Strategy, LLC, a Delaware limited liability company

f) Property and Portfolio Research Ltd., a U.K. company

g) CoStar Realty Information Canada Ltd., a British Columbia company

h) CoStar International LLC., a Delaware limited liability company

i) CoStar Field Research, LLC, a Delaware limited liability company

j) Realla Ltd., a U.K. company

k) CoStar Europe Ltd., a U.K. company

l) CoStar España, S.L., a Spanish company

m) Thomas Daily GmbH, a German company

n) Westside Rentals, LLC, a California limited liability company

o) Westside Credit Services, LLC, a California limited liability company

p) CS Land LLC, a Delaware limited liability company

q) The Screening Pros, LLC, a California limited liability company

r) ForRent Holdings, LLC, a Delaware limited liability company

s) ForRent, LLC, a Delaware limited liability company

t) Apartment Book, LLC, a Virginia limited liability company

u) Cozy Services, LLC., a Delaware limited liability company

v) Cozy Insurance Services, LLC, a Florida limited liability company

EXHIBIT 21.1

Consent of Independent Registered Public Accounting Firm

EXHIBIT 23.1

We consent to the incorporation by reference in the following Registration Statements:

(1) Registration Statement Number 333-135709 on Form S-8 pertaining to the CoStar Group, Inc. Employee Stock Purchase Plan, 

(2) Registration Statement Number 333-206929 on Form S-8 pertaining to the CoStar Group, Inc. Amended and Restated Employee Stock Purchase

Plan,

(3) Registration Statement Number 333-143968 on Form S-8 pertaining to the CoStar Group, Inc. 2007 Stock Incentive Plan, as amended,

(4) Registration Statement Number 333-167424 on Form S-8 pertaining to the CoStar Group, Inc. 2007 Stock Incentive Plan, as amended,

(5) Registration Statement Number 333-182377 on Form S-8 pertaining to the CoStar Group, Inc. 2007 Stock Incentive Plan, as amended,

(6) Registration Statement Number 333-212278 on Form S-8 pertaining to the CoStar Group, Inc. 2016 Stock Incentive Plan, and

(7) Registration Statement Number 333-220607 on Form S-3 of CoStar Group, Inc. and

(8) Registration Statement Number 333-223230 on Form S-8 pertaining to the CoStar Group, Inc. Management Stock Purchase Plan

of our reports dated February 28, 2019 , with respect to the consolidated financial statements and schedule of CoStar Group, Inc. and the effectiveness of internal
control over financial reporting of CoStar Group, Inc., included in this Annual Report (Form 10-K) of CoStar Group, Inc. for the year ended December 31, 2018 .

Tysons, Virginia

February 28, 2019

/s/ Ernst & Young LLP

EXHIBIT 31.1

I, Andrew C. Florance, certify that:

1.

I have reviewed this annual report on Form 10-K of CoStar Group, Inc.;

CERTIFICATION

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements

made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange

Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that
material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly
during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of

the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal

quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who have  a  significant  role  in  the  registrant’s  internal  control  over

financial reporting.

Date: 2/28/2019

By:

/s/ Andrew C. Florance

Andrew C. Florance

Chief Executive Officer

(Principal Executive Officer and Duly Authorized Officer)

 
 
 
 
 
 
 
 
 
EXHIBIT 31.2

I, Scott T. Wheeler certify that:

1.

I have reviewed this annual report on Form 10-K of CoStar Group, Inc.;

CERTIFICATION

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements

made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange

Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that
material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly
during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of

the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal

quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to

adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: 2/28/2019

By:

/s/ Scott T. Wheeler

Scott T. Wheeler

Chief Financial Officer

(Principal Financial and Accounting Officer and Duly Authorized Officer)

 
 
 
 
 
 
 
 
 
EXHIBIT 32.1

CoStar Group, Inc.
1331 L Street, NW
Washington, DC 20005

February 28, 2019

Securities and Exchange Commission
100 F Street, NE
Washington, DC  20549

Re:   Certification Of Principal Executive Officer Pursuant To 18 U.S.C. Sec. 1350

Dear Ladies and Gentlemen:

In connection with the accompanying Annual Report on Form 10-K of CoStar Group, Inc., for the year ended December 31, 2018 , I, Andrew C. Florance,
Chief Executive Officer of CoStar Group, Inc., hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of
2002, that:

1)

2)

such Annual Report on Form 10-K of CoStar Group, Inc., for the year ended December 31, 2018 , fully complies with the requirements of Section 13(a)
or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o (d)); and

the information  contained  in such Annual Report on Form 10-K of CoStar Group, Inc., for the year  ended  December 31, 2018 , fairly  presents, in all
material respects, the financial condition and results of operations of CoStar Group, Inc.

By:

/s/ Andrew C. Florance

Andrew C. Florance

Chief Executive Officer

(Principal Executive Officer and Duly Authorized Officer)

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging or otherwise adopting the signature that
appears in typed form within the electronic version of this written statement required by Section 906, has been provided to CoStar Group, Inc. and will be retained
by CoStar Group, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

In accordance with Item 601 of Regulation S-K, this certification is being “furnished” as Exhibit 32.1 to CoStar Group, Inc.’s annual report and shall not be
deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor
shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference
in such a filing.

 
 
 
 
 
 
 
EXHIBIT 32.2

CoStar Group, Inc.
1331 L Street, NW
Washington, DC 20005

February 28, 2019

Securities and Exchange Commission
100 F Street, NE
Washington, DC  20549

Re: Certification Of Principal Financial Officer Pursuant To 18 U.S.C. Sec. 1350

Dear Ladies and Gentlemen:

In connection with the accompanying Annual Report on Form 10-K of CoStar Group, Inc., for the year ended December 31, 2018 , I, Scott T. Wheeler, Chief
Financial Officer of CoStar Group, Inc., hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:

1)

2)

such Annual Report on Form 10-K of CoStar Group, Inc., for the year ended December 31, 2018 , fully complies with the requirements of Section 13(a)
or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o (d)); and

the information  contained  in such Annual Report on Form 10-K of CoStar Group, Inc., for the year  ended  December 31, 2018 , fairly  presents, in all
material respects, the financial condition and results of operations of CoStar Group, Inc.

By:

/s/ Scott T. Wheeler

Scott T. Wheeler

Chief Financial Officer

(Principal Financial and Accounting Officer and Duly Authorized Officer)

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging or otherwise adopting the signature that
appears in typed form within the electronic version of this written statement required by Section 906, has been provided to CoStar Group, Inc. and will be retained
by CoStar Group, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

In accordance with Item 601 of Regulation S-K, this certification is being “furnished” as Exhibit 32.2 to CoStar Group, Inc.’s annual report and shall not be
deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor
shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference
in such a filing.