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Aptose Biosciences Inc.

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FY2021 Annual Report · Aptose Biosciences Inc.
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

(Mark one)

☒         ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2021.

☐         TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 001-3200

APTOSE BIOSCIENCES INC.
(Exact name of registrant as specified in its charter)

Canada
(State or other jurisdiction of incorporation or organization)

98-1136802
(I.R.S. Employer Identification No.)

251 Consumers Road, Suite 1105
Toronto, Ontario, Canada  M2J 4R3
(Address of principal executive offices)

647-479-9828
(Registrant’s telephone number, including area code)

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

Title of each class
Common Shares, no par value

Trading Symbol(s)
APTO

Name of each exchange on which registered
Nasdaq Capital 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 ☐ No ☒

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

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 ☒ 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 (§229.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging

growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the
Exchange Act.

Large accelerated filer ☐
Non-accelerated filer ☒
Emerging growth company ☐

Accelerated filer ☐
Smaller reporting 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 registrant is a shell company (as defined in Rule 12b 2 of the Act). Yes ☐ No ☒

The aggregate market value of the voting stock and nonvoting common equity held by non-affiliates computed by reference to the price at which the common equity was
last sold, or the average bid and asked prices of such common equity, as of June 30, 2021 was $293,330,791.

As of March  22, 2022, the registrant had 92,229,189 common shares outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of our Proxy Statement for our 2022 Annual Meeting of Stockholders (the “Proxy Statement”), are incorporated by reference in Part III.

 
 
 
 
 
 
 
 
 
      
 
 
 
 
 
 
 
 
 
 
 
 
TABLE OF CONTENTS

PART I.

ITEM 1. BUSINESS

ITEM 1A. RISK FACTORS

ITEM 1B. UNRESOLVED STAFF COMMENTS

ITEM 2. PROPERTIES

ITEM 3. LEGAL PROCEEDINGS

ITEM 4. MINE SAFETY DISCLOSURES

PART II.

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY
SECURITIES

ITEM 6.  RESERVED 

ITEM 7 - MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

ITEM 7A.  QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

ITEM 9A. CONTROLS AND PROCEDURES

ITEM 9B. OTHER INFORMATION

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS

PART III.

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

ITEM 11. EXECUTIVE COMPENSATION

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AN DIRECTOR INDEPENDENCE

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

PART IV.

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

ITEM 16.  FORM 10-K SUMMARY

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This Annual Report on Form 10-K contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and
Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and is subject to the safe harbor created by those sections. For more information,
see “Part I. Item 1. Business — Cautionary Note Regarding Forward-Looking Statements.”

As used in this report, the terms “Aptose,” “Aptose Biosciences,” the “Company,” “we,” “us,” “our” and similar references refer to Aptose Biosciences Inc.

(formerly known as Lorus Therapeutics Inc.) and our consolidated subsidiaries, and the term “Common Shares” refers to our common shares, no par value.

Aptose has historically qualified as a “foreign private issuer” for purposes of reporting under the Exchange Act, and filing registration statements under the

Securities Act of 1933, as amended. Effective December 31, 2018, however, Aptose ceased qualifying as a foreign private issuer and began filing reports with the SEC as
a “domestic issuer”. As a result, Aptose changed the accounting standards by which it prepares its financial statements from International Financial Reporting Standards,
or “IFRS”, to generally accepted accounting principles in the United States, or “US GAAP”. All financial statements contained in this Annual Report are presented on
the basis of U.S. GAAP. This report contains the following trademarks, trade names and service marks of ours: Aptose. This report also contains trademarks, trade
names and service marks that are owned by other persons or entities.

ITEM 1. BUSINESS

Overview

PART I.

Aptose is a clinical stage precision oncology biotechnology company advancing highly differentiated kinase inhibitors to treat unmet medical needs in life-threatening
cancers,  such  as  acute  myeloid  leukemia  (“AML”),  certain  B-cell  malignancies,  high-risk  myelodysplastic  syndrome  (“MDS”),  and  other  hematologic  malignancies.
Aptose is a publicly listed company incorporated under the laws of Canada. The Company’s Common Shares are listed on the Nasdaq Capital Market and the Toronto
Stock Exchange. The Company was incorporated on September 5, 1986, under the name RML Medical Laboratories (“RML”) pursuant to the Business Corporations Act
(Ontario) and then continued pursuant to the Canada Business Corporations Act (“CBCA”). Between 1986 and 2014, the Company operated under the names of RML,
IMUTEC Corporation and Lorus Therapeutics Inc. On August 28, 2014, the Company changed its name from Lorus Therapeutics Inc. to Aptose Biosciences Inc. and, on
October 1, 2014, we consolidated our outstanding Common Shares on the basis of one post-consolidation Common Share for each twelve pre-consolidation Common
Shares.

Based on insights into the genetic profiles of certain cancers and patient populations, Aptose is building a pipeline of novel and targeted oncology therapies directed at
dysregulated processes and signaling pathways in cancer cells, and this strategy is intended to optimize efficacy through simultaneous targeting of key drivers of disease
in cancer cells, while preserving quality of life in patients by minimizing the side effects associated with conventional therapies. Our product pipeline includes cancer drug
candidates that exert potent activity as stand-alone agents and that enhance the activities of other anticancer agents without causing overlapping toxicities. Indeed, we
believe  our  targeted  products  can  emerge  as  first-in-class  or  best-in-class  agents  that  deliver  single  agent  benefit  and  may  serve  as  part  of  a  combination  therapeutic
strategy for specific populations of cancer patients.

We believe the future of cancer treatment and management lies in the prospective selection and treatment of patients having malignancies that are genetically predisposed
to response based on a drug’s unique mechanism of action. We are of the view that many drugs currently approved for the treatment and management of cancer are not
selective for the specific genetic alterations (targets) and pathways that cause the patient’s tumor and hence allow for disease progression and /or significant toxicities due
to off-target effects. Aptose’s strategy is to develop agents that target underlying disease-promoting mutations or altered pathways within a patient population, and we
intend to apply this strategy across several therapeutic indications in hematology and oncology.

Aptose Programs

Aptose has two therapeutic assets under clinical development in-house (HM43239 and luxeptinib), a third clinical asset available for partnering (APTO-253), and a fourth
preclinical asset already partnered (APL-581).

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The myeloid kinome inhibitor HM43239 is an oral small molecule inhibitor of a constellation of kinases operative in myeloid malignancies and known to be
involved in tumor proliferation, resistance to therapy, and differentiation. Preclinical in vitro and in vivo studies suggest that HM43239 may be an effective
monotherapy and combination therapy in patients with hematologic malignancies including AML. An international Phase 1/2 clinical trial in patients with
relapsed or refractory AML is ongoing. The dose escalation portion of this study thus far has delivered multiple complete responses in a diverse set of patients
with various disease genotypes, and no toxicity trends that prevent further dose escalation to date.

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The dual lymphoid and myeloid kinome inhibitor luxeptinib (CG026806, CG-806) is an oral small molecule inhibitor of kinases operative in both lymphoid
and myeloid malignancies (including Bruton’s tyrosine kinase (BTK), LYN, FMS-like tyrosine kinase 3 (FLT3), CSF1R, PDGRFα, TRK, AURK, and others),
currently being evaluated in two separate Phase 1a/b dose escalation studies. The first trial is being conducted in patients with certain B-cell malignancies,
including chronic lymphocytic leukemia (“CLL”), small lymphocytic lymphoma (“SLL”) and certain non-Hodgkin’s lymphomas (“NHL”) that are
resistant/refractory/intolerant to other therapies. The second trial is being conducted in patients with relapsed/refractory acute myeloid leukemia (“R/R AML”)
and high risk myelodysplastic syndrome (“HR MDS”).

APTO-253 is a small molecule MYC oncogene inhibitor at the Phase 1a/b clinical trial stage of development for the treatment of patients with relapsed or
refractory (“R/R”) blood cancers, including AML and high-risk MDS. The clinical program has been discontinued effective December 20, 2021 following a
prioritization of the company’s other more advanced pipeline assets.

APL-581 is a dual bromodomain and extra-terminal domain motif (“BET”) protein and kinase inhibitor program which we partnered with Ohm Inc. (“OHM”)
on March 7, 2018.

The following table sets forth various product conditions in our pipeline and their respective stages of development.

HM43239 Program

Inlicensing Overview

On November 4, 2021, we entered into a licensing agreement with South Korean company Hanmi Pharmaceutical Co Ltd. (“Hanmi”) for the clinical and commercial
development  of  HM43239.  Under  the  terms  of  the  agreement,  Hanmi  granted  Aptose  exclusive  worldwide  rights  to  HM43239  for  all  indications.  Hanmi  received  an
upfront payment of $12.5 million, including $5 million in cash and $7.5 million in Common Shares. Hanmi will also receive up to $407.5 million in future milestone
payments contingent upon the achievement of certain clinical, regulatory and sales milestones across several potential indications, as well as tiered royalties on net sales.
The term of the agreement will continue on a product-by-product and country-by-country basis until the expiration of the royalty period for such product in such country.
The licenses to Aptose will survive and become non-exclusive, perpetual, irrevocable and fully paid-up on a product-by-product and country-by-country basis, upon their
natural expiration under the terms of the agreement. 

Preclinical Profile

HM43239 is an oral, once-daily, highly potent myeloid kinome inhibitor (MKI) designed to target key kinases operative in myeloid malignancies. In preclinical studies,
HM43239  demonstrated  potent  in vitro  and  in  vivo  activity  against  FLT3  ITD  mutated  as  well  as  resistance-conferring  D835  and  gatekeeper  (F691)  tyrosine  kinase
domain (TKD) mutated AML. Additionally, HM43239 inhibited phosphorylation of SYK, known to be highly activated in AML and associated with resistance to FLT3
targeted  therapy.  HM43239  also  demonstrated  inhibitory  activity  against  several  kinases  that  are  involved  in  tumor  cell  proliferation  and/or  differentiation,  including
mutant forms of c-KIT, JAK1, and JAK2, with IC50 values < 10 nM.

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HM43239  induced  in vitro  cytotoxicity  in  AML  and  Ba/F3  cell  lines  expressing  FLT3  WT,  ITD,  and/or  TKD  point  mutations.  HM43239  showed  greater  inhibitory
activity  compared  to  quizartinib  on  Ba/F3  cells  expressing  resistance-conferring  ITD/TKD  double  mutations  (ITD/F691L  and  ITD/D835Y).  Thus,  HM43239  may
overcome  clinically  relevant  ITD/TKD  double  mutations,  which  may  result  from  sustained  FLT3  inhibition.  Moreover,  target  modulation  was  shown  as  HM43239
inhibited FLT3 phosphorylation and downstream signaling molecules such as phospho-ERK and phospho-STAT5.

The in vivo anti-tumor efficacy of HM43239 was demonstrated in murine MV-4-11 and MOLM-13 xenograft models of FLT3 ITD mutant AML and in a murine MOLM-
14 model of FLT3 ITD and F691L dual mutation with dosing regimens that match those currently under investigation. HM43239 exhibited dose-dependent tumor growth
inhibition of models of FLT3 ITD mutant AML with complete tumor regression observed in some groups, and no change in body weight. Of note, HM43239 produced
greater tumor growth inhibition in the MOLM-14 FLT3-ITD/F691L model compared to gilteritinib, or entospletinib (SYK inhibitor) as single agents, and comparable
activity to the gilteritinib + entospletinib combination.

Latest Clinical Update and Program Status

HM43239 is currently being evaluated in an international Phase 1/2 study in patients with relapsed or refractory AML across clinical centers in the United States and
South Korea. Clinical data from HM43239 in AML were presented at the American Society of Hematology (ASH) Annual Meeting in December 2021. In the ongoing
study, thirty-four relapsed/refractory patients who had received at least one prior line of therapy were enrolled at multiple centers between March 2019 and August 2021,
and  treated  at  doses  escalating  from  20  mg  to  160  mg.  HM43239  delivered  multiple  complete  responses  (CR)  and  demonstrated  clinically  meaningful  benefit  in  all
responders, by either bridging successfully to hematopoietic stem cell transplant (HSCT) or leading to a durable response, as well as a favorable safety profile.

Specifically, among FLT3 mutant patients treated with 80 mg, 3 out of 8 (37.5%) achieved a durable composite CR (CRc, CR + CRi). At the 80 mg dose, a composite
CRc rate of 25% was observed in both FLT3 mutant (including a prior gilteritinib failure patient) and FLT3 wild-type AML (including >1 year duration of response in a
relapsed TP53m AML patient unfit for HSCT). At the 80 mg dose, 4 of 5 (80%) responders advanced to HSCT. HM43239 showed a favorable safety profile with only
mild  AEs  and  no  DLTs  up  to  160  mg  per  day,  and  no  drug  discontinuations  from  drug  related  toxicity.  HM43239  plasma  inhibitory  assay  (PIA)  activity  was  dose-
dependent with up to 90% phospho-FLT3 inhibition at dose levels ≥ 80 mg.

Luxeptinib (CG-806) Program

Inlicensing Overview

On May 7, 2018, we exercised an option by paying $2.0 million in cash to South Korean company Crystal Genomics, Inc. (“CG”) to purchase an exclusive license to
research, develop and commercialize luxeptinib in all countries of the world except the Republic of Korea and China, for all fields of use (collectively, the “Rights”).
Subsequently, on June 14, 2018, we announced that we entered into a license agreement with CG for Aptose to gain a license for rights to CG-806 in China (including the
People’s Republic of China, Hong Kong, and Macau) ) (the “China Rights”). Under the license agreement, Aptose made an upfront payment to CG of $3.0 million for the
China Rights. CG is eligible for development, regulatory and commercial-based milestones, as well as single-digit royalties on product sales in China. The total deal value
for the China Rights, including the upfront payment, is up to $125 million. Aptose now owns worldwide (excluding Korea) rights to luxeptinib, a first-in-class, highly
potent oral small molecule being developed for AML, B-cell malignancies, and other hematologic malignancies. Future possible royalties that might be paid under these
agreements are determined on a country-by-country and product-by-product basis, on net sales during the period of time beginning on the first commercial sale of such
product in such country and continuing until the later of: (i) the expiration of the last-to-expire valid claim of the CG patents in such country covering such product; and
(ii) ten (10) years after the first commercial sale of such product in such country.

Preclinical Profile

Luxeptinib exhibits a picomolar half maximal inhibitory concentration (“IC50”) toward FLT3 with the Internal Tandem Duplication (“FLT3-ITD”), potency against the
wild type FLT3 and a host of mutant forms of FLT3, as well as single-digit nanomolar IC50’s against BTK and its C481S mutant (“BTK-C481S”). Further, luxeptinib
suppresses a small group of other relevant oncogenic kinases/pathways (including CSF1R, PDGFRα, TRK, and the ERK, MYC, AKT/mTOR/S6K and AURK/H3S10
pathways) that are operative in AML and certain B cell malignancies, but does not inhibit the TEC, epidermal growth factor receptor (EGFR) and ErbB2/4 kinases that
are  responsible  for  safety  concerns  with  certain  other  kinase  inhibitors.  Consequently,  luxeptinib  is  characterized  as  a  mutation-agnostic  dual  lymphoid  and  myeloid
kinome inhibitor.

As a potent inhibitor of FLT3-ITD, luxeptinib may become an effective therapy in a high-risk subset of AML patients. This is because the FLT3-ITD mutation occurs in
approximately 30% of patients with AML and is associated with a poor prognosis. In murine xenograft studies of human AML (FLT3-ITD), CG-806 administered orally
resulted in tumor elimination (“cures”) without measurable toxicity. Importantly, luxeptinib targets other oncogenic kinases which may also be operative in FLT3-ITD
AML, thereby potentially allowing the agent to become an important therapeutic option for a broader group of this difficult-to-treat AML patient population. The findings
that luxeptinib targets all forms of FLT3 and several other key oncogenic pathways, and that luxeptinib was well tolerated from a safety perspective during efficacy and
formal Good Laboratory Practice (“GLP”) toxicology studies, suggest that luxeptinib may also have applicability in treating patients, particularly those over the age of 65,
who cannot tolerate other therapies.

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Separate  from  the  AML  and  FLT3  story,  luxeptinib  may  be  a  therapeutic  option  for  patients  with  B  cell  malignancies.  Overexpression  of  the  BTK  enzyme  can  drive
oncogenic signaling of certain B cell malignancies, including CLL and certain NHL such as mantle cell lymphoma (“MCL”), follicular lymphoma (“FL”), diffuse large
cell B cell lymphoma (“DLBCL”) and others. Therapy of these patients with covalent, irreversible BTK inhibitors, such as ibrutinib, that target the active site cysteine
(“Cys”) residue of BTK can be beneficial in many patients. However, therapy with covalent BTK inhibitors can select for BTK with a C481S mutation, thereby conferring
resistance  to  covalent  BTK  inhibitors.  Furthermore,  approximately  half  of  CLL  patients  have  discontinued  treatment  with  ibrutinib  after  3.4  years  of  therapy.
Discontinuation of ibrutinib is due to the development of drug resistance (in particular, patients have malignancies that developed the BTK-C481S mutation), or due to
refractory disease (patient tumors did not respond to ibrutinib) or intolerance (side effects led to discontinuation of ibrutinib), according to a study performed at The Ohio
State University. The C481S mutation is observed in 5-10% of the patients, while 40-45% of the patients were intolerant or refractory to ibrutinib. As a non-covalent,
reversible  inhibitor  of  BTK,  luxeptinib  does  not  rely  on  the  Cysteine  481  residue  (“C481”)  for  inhibition  of  the  BTK  enzyme.  Indeed,  recent  X-ray  crystallographic
studies (with wild type and C481S BTK) demonstrated that luxeptinib binds productively to the BTK active site in a manner that is indifferent to the presence or absence
of  mutations  at  the  481  residue.  Moreover,  in  vitro  studies  demonstrated  that  luxeptinib  kills  B  cell  malignancy  cell  lines  on  average  approximately  1000  times  more
potently than ibrutinib and kills ibrutinib-resistance cancer cells, and that luxeptinib more potently killed primary malignant cells taken from the bone marrow of CLL and
ALL B-cell cancer patients. Yet, luxeptinib demonstrated a high degree of safety in animal efficacy and GLP toxicology studies. Consequently, patients who are resistant,
refractory  or  intolerant  to  ibrutinib  or  other  commercially  approved  or  development-stage  BTK  inhibitors  with  B  cell  malignancies  may  continue  to  be  sensitive  to
luxeptinib therapy. This is particularly true since luxeptinib inhibits the wild type and mutant forms of BTK, as well as other kinases/pathways that drive the survival and
proliferation of B cell malignancies.

Latest Clinical Update and Program Status

Luxeptinib  is  currently  being  evaluated  in  a  Phase  1  a/b  trial  in  patients  with  relapsed  or  refractory  B  cell  malignancies  who  have  failed  or  are  intolerant  to  standard
therapies, and in a separate Phase 1 a/b trial in patients with relapsed or refractory AML or high-risk MDS. Clinical data from both studies were presented at the American
Society of Hematology (ASH) Annual Meeting in December 2021. In these parallel studies, luxeptinib was generally well tolerated at dose levels of 450, 600 and 750 mg
using dosing schedule (“BID”) over multiple cycles, and continued being dosed in 900 mg BID cohorts in parallel. Target engagement of BTK and FLT3, and anti-tumor
activity,  including  dose-  and  exposure-dependent  tumor  reductions,  were  observed  in  multiple  patients  collectively  between  the  studies,  including  in  patients  with  FL,
DLBCL, CLL/SLL, and AML. In parallel with the ongoing dose escalation of the current formulation of luxeptinib in patients with B-cell malignancies and AML, Aptose
has made significant progress in the development of a “next generation” formulation that could reduce total active pharmaceutical ingredient, or drug substance (“API”)
administered, reduce pill burden, improve absorption, and increase exposure. Aptose began testing this new formulation of luxeptinib in the ongoing studies in patients
with hematologic malignancies during the first half of 2022.

APTO-253 Program

APTO-253 is a novel small molecule therapeutic agent that inhibits expression of the MYC oncogene, leading to cell cycle arrest and programmed cell death (apoptosis)
in human-derived solid tumor and hematologic cancer cells, without causing general myelosuppression of the healthy bone marrow. MYC is a transcription factor that
regulates cell growth, proliferation, differentiation and apoptosis, and overexpression amplifies new sets of genes to promote oncogenesis.

The clinical development of APTO-253 began in January 2011, with a Phase 1 dose-escalation study in patients with advanced or metastatic solid tumors. The clinical
program of APTO-253 more recently also included a Phase 1a/b dose escalation study in patients with relapsed or refractory AML or high risk MDS, during which no
objective responses were observed.

On December 20, 2021, Aptose announced the decision to discontinue further clinical development of APTO-253. The decision followed prioritization of the company’s
other more advanced pipeline candidates, as well as an internal review of the product profile and performance to date of APTO-253, including a clinical hold placed by
the U.S. Food & Drug Administration (“FDA”).

APL-581 Program

In  November  2015,  Aptose  announced  an  exclusive  drug  discovery  partnership  with  Laxai  Avanti  Life  Sciences  (“LALS”)  for  their  expertise  in  next  generation
epigenetic-based therapies. Under the agreement, LALS was to be responsible for developing multiple clinical candidates, including optimizing candidates that exert dual
BRD4 / kinase inhibitory activity. Based on available resources, Aptose halted further investment in the collaboration with LALS in late 2016. However, the program
delivered novel intellectual property and hit molecules (such as APL-581). Consequently, Aptose chose to out-license the program.

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On  March  7,  2018,  Aptose  entered  into  an  exclusive  global  license  agreement  with  OHM,  an  affiliate  of  LALS  that  was  formed  in  2016  to  advance  the  clinical
development  of  compelling  molecules  derived  from  the  LALS  initiative,  for  the  development,  manufacture  and  commercialization  of  APL-581,  as  well  as  related
molecules,  from  Aptose’s  dual  BET  protein  and  kinase  inhibitor  program.  Under  the  agreement,  Aptose  retained  reacquisition  rights  to  certain  molecules,  while
OHM/LALS has the rights to develop and sublicense all other molecules. Aptose received a nominal upfront cash payment and is eligible to receive up to $125 million of
additional payments based on the achievement of certain developmental, regulatory and sales milestones, as well as royalties on future sales.

Competitive Conditions

The  biotechnology  and  pharmaceutical  industries  are  characterized  by  rapidly  evolving  technology  and  intense  competition.  There  are  numerous  companies  in  these
industries that are focusing their efforts on activities similar to ours. Some of these are companies with established positions in the pharmaceutical industry and may have
substantially more financial and technical resources, more extensive research and development capabilities, and greater marketing, distribution, production, and human
resources than Aptose. In addition, we face competition from other companies for opportunities to enter partnerships with biotechnology and pharmaceutical companies
and academic institutions.

Competition with our potential products may include chemotherapeutic agents, monoclonal antibodies, antisense therapies, small molecules, immunotherapies, vaccines,
and other biologics with novel mechanisms of action. These drugs may kill cancer cells indiscriminately, or through a targeted approach, and some have the potential to be
used in non-cancer indications. We also expect that we will experience competition from established and emerging pharmaceutical and biotechnology companies that have
other forms of treatment for the cancers that we target, including drugs currently in development for the treatment of cancer that employ a number of novel approaches for
attacking these cancer targets. Cancer is a complex disease with more than 100 indications requiring drugs for treatment. The drugs in competition with our potential
drugs have specific targets for attacking the disease, targets which are not necessarily the same as ours. These competitive drugs, however, could potentially also be used
together in combination therapies with our drugs to manage the disease. Other factors that could render our potential products less competitive may include the stage of
development, where competitors’ products may achieve earlier commercialization, as well as superior patent protection, better safety profiles, or a preferred cost-benefit
profile.

Luxeptinib for B Cell Malignancies

We are aware of a number of companies that have developed and are pursuing different approaches to BTK inhibition, both for the wild type and to the C481S-mutant
forms. Companies that have developed approved or are currently developing inhibitors that directly target the wild type include AbbVie (IMBRUVICA), AstraZeneca
(CALQUENCE), and Beigene Co., Ltd. (Zanubrutinib). Others that are developing inhibitors that target the C481S-mutant BTK include Merck (nemtabrutinib), and Eli
Lilly (pirtobrutinib), among others.

HM43239 and Luxeptinib for AML

We also face intense competition in AML as there is a wide range of therapies that have been approved and are under development for the treatment of AML. Companies
that  have  developed  approved  therapies  include  Jazz  (VYXEOS),  Pfizer  (MYLOTARG),  Novartis  (RYDAPT),  Astellas  (XOSPATA),  and  AbbVie  (VENCLEXTA),
among  others.  Others  are  currently  developing  targeted  therapies  such  as  FLT3  inhibitors  which  include  Daiichi  Sankyo  (quizartinib),  Arog  (crenolanib),  IDH1/2
inhibitors  which  include  Agios/Servier  (TIBSOVO)  and  Celgene/BMS  (IDHIFA),  SYK  inhibitors  which  include  Kronos  Bio  (entospletinib  and  lanraprenib),  IRAK4
inhibitors which include Curis (emavusertib), and menin inhibitors which include Syndax (SNDX-5613) and Kura (KO-539), among others.

Manufacturers, Suppliers and Other Third Party Contractors

Contract manufacturing organizations (“CMOs”) manufacture our product candidates for all preclinical studies and clinical trials. We rely on CMOs for manufacturing,
filling, packaging, storing and shipping of drug product in compliance with Current Good Manufacturing Practice (“cGMP”) regulations applicable to our products. The
FDA  ensures  the  quality  of  drug  products  by  carefully  monitoring  drug  manufacturers’  compliance  with  cGMP  regulations.  The  cGMP  regulations  for  drugs  contain
minimum requirements for the methods, facilities and controls used in manufacturing, processing and packing of a drug product. These CMOs are reputable companies
active in the biotechnology industry. Pricing is predictable as there are many alternatives of such supplies that are readily available.

We rely and will continue to rely on third party contract research organizations (“CROs”) to conduct a significant portion of our preclinical and clinical development
activities. Preclinical activities include in vivo studies providing access to specific disease models, pharmacology and toxicology studies, and assay development. Clinical
development activities include trial design, regulatory submissions, clinical patient recruitment, clinical trial monitoring, clinical data management and analysis, safety
monitoring and project management, contract manufacturing and quality assurance.

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Intellectual Property

We  believe  that  our  issued  patents  and  pending  applications  are  important  in  establishing  and  maintaining  a  competitive  position  with  respect  to  our  products  and
technology.

HM43239

In November 2021, we licensed the exclusive rights to research, develop and commercialize HM43229. Under the terms of the agreement, Hanmi has granted Aptose
exclusive  worldwide  rights  to  HM43239  for  all  indications.    Aptose  is  now  the  exclusive  licensee  of  composition  of  matter  and  use  patents  covering  HM43229,  and
HM43239 analogs. Aptose believes that it now owns rights to a strong and defensive intellectual property position.

As  of  December  31,  2021,  Aptose  owns  rights  in  35  issued  patents,  including  3  issued  U.S.  patents,  that  are  in  force  and  cover  numerous  compounds,  including  the
HM43239 compound. These patents are expected to provide protection until 2038-2039. Patent applications are also pending in the United States and in contracting states
to the Patent Cooperation Treaty for coverage of HM43239 and analog compounds, with expected expiry dates between 2038‑2041.

Luxeptinib (CG-806)

In May 2018 and June 2018, we licensed the Rights to CG-806, for all fields of use, in all territories outside of the Republic of Korea and China, by exercising an option
we obtained through a June 2016 option-license agreement with CG that had granted us an exclusive option to research, develop and commercialize CG-806. In June
2018, we entered into a separate license agreement with CG for Aptose to gain a license for the China Rights. Aptose now owns worldwide Rights to CG-806, including
an issued patent in China but excluding any Rights in Korea.

As of December 31, 2021, Aptose owns rights to 12 issued patents, including 2 issued U.S. patents, that are in force and cover numerous compounds, including the CG-
806 compound, pharmaceutical compositions comprising the CG-806 compound, and methods of use for treating various diseases by administering various compounds,
including the CG-806 compound. These patents are expected to provide protection until December of 2033. Patent applications are also pending in the United States and
in contracting states to the Patent Cooperation Treaty for coverage of CG-806, with expected expiry dates between 2038‑2039.

Environmental Protection

The Company’s research and development activities involve the controlled use of hazardous and radioactive materials and, accordingly, the Company is subject to federal,
provincial and local laws and regulations in the United States and Canada governing the use, manufacture, storage, handling and disposal of such materials and certain
waste products. To the knowledge of the Company, compliance with such environmental laws and regulations does not and will not have any significant impact on its
capital spending, profits or competitive position within the normal course of its operating activities. There can be no assurance, however, that the Company will not be
required to incur significant costs to comply with environmental laws and regulations in the future or that its operations, business or assets will not be materially adversely
affected by current or future environmental laws or regulations.

Employees

As  at  December  31,  2021,  we  employed  41  full-time  persons  and  one  part-time  persons  in  research  and  drug  development  and  administration  activities.  Eight  of  our
employees hold Ph.D.s and numerous others hold degrees and designations such as MD, MSc, BSc, CPA (CA), CPA (California) and MBA. To encourage a focus on
achieving long-term performance, employees and members of the board of directors of the Company (the “Board”) have the ability to acquire an ownership interest in the
Company through Aptose’s share option and alternate compensation plans.

The business of the Company requires personnel with specialized skills and knowledge in oncology. Researchers must be able to design and implement studies to assess
the efficacy of anticancer drugs. Specialized knowledge and skills relating to chemistry and formulation process development are also needed. Such knowledge and skills
are  needed  to  develop  product  specific  analytical  methods  and  formulation  processes.  The  Company’s  business  also  requires  clinical  and  regulatory  expertise  and
knowledge. The Company has trained scientists and personnel with broad experience in these fields.

7

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
None of our employees are unionized, and we consider our relations with our employees to be good.

Government Regulation

Overview

Our overall regulatory strategy is to work with the appropriate government departments which regulate the use and sale of therapeutic drug products. This includes the
FDA  in  the  United  States,  Health  Canada  in  Canada,  the  European  Medicines  Agency  (“EMA”)  in  Europe,  and  other  local  regulatory  agencies  with  oversight  of
preclinical  studies,  clinical  trials  and  marketing  of  therapeutic  products.  Where  possible,  we  intend  to  take  advantage  of  opportunities  for  accelerated  development  of
drugs designed to treat rare and serious or life-threatening diseases. We also intend to pursue priority evaluation of any application for marketing approval filed in Canada,
the United States or the European Union and to file additional drug applications in other markets where commercial opportunities exist. We may not be able to pursue
these opportunities successfully.

Regulation(s)  by  government  authorities  in  the  United  States,  Canada,  and  the  European  Union  are  significant  factors  in  guiding  our  current  research  and  drug
development activities. To clinically test, manufacture and market drug products for therapeutic use, we must be in compliance with guidance and regulations established
by the regulatory agencies in the countries in which we currently operate or intend to operate.

The laws of most of these countries require the licensing of manufacturing facilities, carefully controlled research and the extensive testing of products. Biotechnology
companies must establish the safety and efficacy of their new products in clinical trials; they must establish and comply with cGMPs for the manufacturing of the product
and control over marketing activities before being allowed to market a product. The safety and efficacy of a new drug must be shown through human clinical trials of the
drug carried out in accordance with the guidance and regulations established by local and federal regulatory agencies.

The process of completing clinical trials and obtaining regulatory approval for a new drug takes a number of years and requires the expenditure of substantial resources.
Once a new drug or product license application is submitted, regulatory agencies may not review the application in a timely manner and may not approve the product.
Even  after  a  New  Drug  Application  (“NDA”)  submission  has  occurred  and/or  approval  has  been  obtained,  further  studies,  including  post-marketing  studies,  may  be
required to provide additional data on the efficacy and safety necessary to confirm the approved indication or to gain approval for the use of the new drug as a treatment
for clinical indications other than those for which the new drug was initially tested. Also, regulatory agencies require post-marketing surveillance programs to monitor a
new drug’s side effects, safety and long-term effects of the product. A serious safety or effectiveness problem involving an approved new drug may result in a regulatory
agency mandating a withdrawal of the new drug from the market and possible civil action. It is possible that we could encounter such difficulties or excessive costs in our
efforts to secure necessary approvals, which could delay or prevent us from manufacturing or marketing our products.

In addition to the regulatory product approval framework, biotechnology companies, including Aptose, are subject to regulation under local, provincial, state and federal
law, including requirements regarding occupational safety, laboratory practices, environmental protection and hazardous substance control, and may be subject to other
present and future local, provincial, state, federal and foreign regulation, including possible future regulation of the biotechnology industry.

Approval of New Drugs in Canada

In Canada, the manufacture and sale of new drugs are controlled by Health Canada. New drugs must pass through a number of testing stages, including pre-clinical testing
and  human  clinical  trials.  Pre-clinical  testing  involves  testing  the  new  drug’s  chemistry,  pharmacology  and  toxicology  in vitro  and  in vivo.  Successful  results  (that  is,
potentially valuable pharmacological activity combined with an acceptable low level of toxicity) enable the developer of the new drug to file a clinical trial application to
begin clinical trials involving humans.

To  study  a  drug  in  Canadian  patients,  a  clinical  trial  application  submission  must  be  filed  with  Health  Canada.  The  clinical  trial  application  submission  must  contain
specified information, including the results of the pre-clinical tests completed at the time of the submission and any available information regarding use of the drug in
humans. In addition, since the method of manufacture may affect the efficacy and safety of a new drug, information on manufacturing methods and standards and the
stability  of  the  drug  substance  and  dosage  form  must  be  presented.  Production  methods  and  quality  control  procedures  must  be  in  place  to  ensure  an  acceptably  pure
product, essentially free of contamination, and to ensure uniformity with respect to all quality aspects.

In addition, all federally regulated trials must be approved and monitored by an independent committee of doctors, scientists, advocates and others to ensure safety and
ethical standards, Institutional Review Boards (“IRBs”) or Ethics Review Boards (“ERBs”). The review boards study and approve all study-related documents before a
clinical trial begins and also carefully monitor data to detect benefit or harm, and validity of results.

8

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Provided Health Canada does not reject a clinical trial application submission and IRB or ERB approval has been obtained, clinical trials can begin. Clinical trials for
product  candidates  in  Canada,  as  in  the  United  States,  are  generally  carried  out  in  three  phases.  Phase  1  involves  studies  to  evaluate  toxicity  and  ideal  dose  levels  in
healthy  humans.  The  new  drug  is  administered  to  human  patients  who  have  met  the  clinical  trial  entry  criteria  to  determine  pharmacokinetics,  human  tolerance  and
prevalence of any adverse side effects. Phases 2 and 3 involve therapeutic studies. In Phase 2, efficacy, dosage, side effects and safety are established in a small number of
patients who have the disease or disorder that the new drug is intended to treat. In Phase 3, there are controlled clinical trials in which the new drug is administered to a
large number of patients who are likely to receive benefit from the new drug. In Phase 3, the effectiveness of the new drug in patients is compared to that of standard
accepted methods of treatment in order to provide sufficient data for the statistical proof of safety and efficacy for the new drug.

If clinical studies establish that a new drug has value, the manufacturer submits a new drug submission application to Health Canada for marketing approval. The new
drug  submission  contains  all  information  known  about  the  new  drug,  including  the  results  of  pre-clinical  testing  and  clinical  trials.  Information  about  a  substance
contained  in  new  drug  submission  includes  its  proper  name,  its  chemical  name,  and  details  on  its  method  of  manufacturing  and  purification,  and  its  biological,
pharmacological and toxicological properties. The new drug submission also provides information about the dosage form of the new drug, including a quantitative listing
of  all  ingredients  used  in  its  formulation,  its  method  of  manufacture,  manufacturing  facility  information,  packaging  and  labelling,  the  results  of  stability  tests,  and  its
diagnostic or therapeutic claims and side effects, as well as details of the clinical trials to support the safety and efficacy of the new drug. Furthermore, for biological
products, an on-site evaluation is completed to assess the production process and manufacturing facility. It is required prior to the issuance of a notice of compliance. All
aspects of the new drug submission are critically reviewed by Health Canada. If a new drug submission is found satisfactory, a notice of compliance is issued permitting
the new drug to be sold for the approved use. In Canada, an establishment license must be obtained prior to marketing the product.

Health Canada has a policy of priority evaluation of new drug submissions for all drugs intended for serious or life-threatening diseases for which no drug product has
received regulatory approval in Canada and for which there is reasonable scientific evidence to indicate that the proposed new drug is safe and may provide effective
treatment.

An exception to the foregoing requirements relating to the manufacture and sale of a new drug is the limited authorization that may be available in respect of the sale of
new drugs for emergency treatment. Under the special access program, Health Canada may authorize the sale of a quantity of a new drug for human use to a specific
practitioner for the emergency treatment of a patient under the practitioner’s care. Prior to authorization, the practitioner must supply Health Canada with information
concerning the medical emergency for which the new drug is required, such data as is in the possession of the practitioner with respect to the use, safety and efficacy of
the  new  drug,  the  names  of  the  institutions  at  which  the  new  drug  is  to  be  used  and  such  other  information  as  may  be  requested  by  Health  Canada.  In  addition,  the
practitioner  must  agree  to  report  to  both  the  drug  manufacturer  and  Health  Canada  the  results  of  the  new  drug’s  use  in  the  medical  emergency,  including  information
concerning adverse reactions, and must account to Health Canada for all quantities of the new drug made available.

The Canadian regulatory approval requirements for new drugs outlined above are similar to those of other major pharmaceutical markets. While the testing carried out in
Canada is often acceptable for the purposes of regulatory submissions in other countries, individual regulatory authorities may request supplementary testing during their
assessment of any submission. Therefore, the clinical testing conducted under Health Canada authorization or the approval of regulatory authorities of other countries may
not be accepted by regulatory authorities outside Canada or other countries.

Approval of New Drugs in the United States

In the United States, the FDA controls and investigates the investigation, manufacturing, and sale of new drugs. New drugs require FDA approval of an NDA prior to
commercial sale. In the case of certain biological products, a Biological License Application (“BLA”) must be obtained prior to marketing and batch releasing. As in
Canada,  to  obtain  marketing  approval,  data  from  adequate  and  well-controlled  human  clinical  trials,  demonstrating  to  the  FDA’s  satisfaction  a  new  drug’s  safety  and
effectiveness  for  its  intended  use,  are  required.  Data  are  generated  in  studies  conducted  pursuant  to  an  investigational  new  drug  (“IND”)  submission,  similar  to  that
required for a clinical trial application in Canada. Clinical trials with human subjects are characterized as Phase 1, Phase 2 and Phase 3 trials or a combination thereof. In a
marketing application, the manufacturer must also demonstrate the identity, potency, quality and purity of the active ingredients of the new drug involved, and the stability
of  those  ingredients.  Further,  the  manufacturing  facilities,  equipment,  processes  and  quality  controls  for  the  new  drug  must  comply  with  the  FDA’s  current  cGMP
regulations for drugs both in a pre-licensing inspection before product licensing and in subsequent periodic inspections after licensing. An establishment license grants the
sponsor permission to fabricate, package, label, distribute, import, wholesale or test the newly approved drug.

Federally regulated trials must be approved and monitored by an independent committee of doctors, scientists, advocates and others to ensure safety and ethical standards,
IRBs or ERBs. The review boards study and approve all study-related documents before a clinical trial begins and also carefully monitor data to detect benefit or harm,
and validity of results.

9

 
 
 
 
 
 
 
 
 
 
Post-Approval Regulation

The monitoring of a new drug does not cease once it is on the market. For example, a manufacturer of a new drug must report any new information received concerning
serious side effects, as well as the failure of the new drug to produce desired effects. If Health Canada determines it to be in the interest of public health, a notice of
compliance for a new drug may be suspended and the new drug may be removed from the market.

A post surveillance program involves clinical trials conducted after a drug is marketed (referred to as Phase 4 studies in the United States) and is an important source of
information  on  as  yet  undetected  adverse  outcomes,  especially  in  populations  that  may  not  have  been  involved  in  the  premarketing  trials  (e.g.,  children,  the  elderly,
pregnant women) and the drug’s long-term morbidity and mortality profile. Regulatory authorities may require companies to conduct Phase 4 studies as a condition of
market approval. Companies often conduct post-marketing studies in the absence of a regulatory mandate.

The foregoing description is a brief summary of the requirements for a new drug to be approved for marketing in North America. The EMA and Japanese Pharmaceuticals
and  Medical  Devices  Agency  are  also  important  regulatory  authorities  in  drug  development.  Together  with  the  FDA,  they  are  the  three  International  Conference  on
Harmonization parties which oversee the three largest markets for drug sales.

Information About Our Executive Officers

Aptose’s leadership team comprises accomplished industry, financial and clinical research professionals who are dedicated to building a comprehensive anticancer drug
pipeline and clinical development programs focused on targeted therapeutics directed against dysregulated oncogenic processes in patients with life. The team includes
our President, Chairman and Chief Executive Officer, our Chief Financial Officer and Chief Business Officer, and our Chief Medical Officer.

Dr. William G. Rice, Ph.D., age 63, joined Aptose as Chairman and Chief Executive Officer in October 2013. Prior to joining Aptose, Dr. Rice served as the President,
Chief Executive Officer and Chairman of the board of Cylene Pharmaceuticals, Inc. (“Cylene”), a private biotechnology company, from 2003 to 2013. Prior to Cylene, Dr.
Rice was the founder, President, Chief Executive Officer and Director of Achillion Pharmaceuticals, Inc. from 1998 to 2003. He also served as Senior Scientist and Head
of  the  Drug  Mechanism  Laboratory  at  the  National  Cancer  Institute-Frederick  Cancer  Research  and  Development  Center  from  1992  to  1998  and  served  as  a  faculty
member in the division of Pediatric Hematology and Oncology at Emory University School of Medicine from 1989 to 1992. Dr. Rice received his Ph.D. from Emory
University Department of Biochemistry. He continues to serve as the Chairman of the board of Cylene and is a member of the board of directors of Oncolytics Biotech
Inc. since 2015.

Dr. Jotin Marango, M.D., Ph.D.., age 43, joined Aptose as Senior Vice President and Chief Business Officer in June 2019, and Chief Business and Strategy Officer in
January 2021. Dr. Marango was appointed Chief Financial Officer effective March 29, 2021. Prior to joining Aptose, from 2017 to 2019, Dr. Marango was a managing
director and senior research analyst at Roth Capital Partners covering biotechnology and therapeutics. Dr. Marango joined Roth from H.C. Wainwright & Co., where he
worked from 2015 to 2017 and covered hematology, oncology, and pulmonary therapeutics, with a focus on epigenetic and molecularly targeted therapies. Dr. Marango
began  his  career  in  equity  research  with  Collins  Stewart/Canaccord  Genuity  in  2010.  Previously,  Dr.  Marango  also  served  as  Chief  Operating  Officer  at  the  Samuel
Waxman  Cancer  Research  Foundation  from  2012  to  2015,  where  he  oversaw  academic  collaborations  in  translational  therapeutics,  as  well  as  venture  philanthropy
initiatives in drug development. Dr. Marango studied theoretical chemistry and classical literature at Harvard University and later received his M.D. and Ph.D. degrees
from the Mount Sinai School of Medicine in New York.

Dr.  Rafael  Bejar,  M.D,  Ph.D.,  age  50,  joined  Aptose  as  Senior  Vice  President  and  Chief  Medical  Officer  in  January  2020.  Dr.  Bejar  is  an  internationally  recognized
physician scientist with extensive research and clinical experience in the area of hematologic malignancies. Dr. Bejar joined Aptose from UC San Diego (“UCSD”) where
he  began  working  in  2012.  He  continues  to  serve  at  UCSD  as  an  Associate  Professor  of  Clinical  Medicine,  caring  for  patients  and  maintaining  a  research  laboratory
focused on translational studies of myeloid malignancies and also serves and is an independent consultant as a member of the Independent Data Monitoring Committee
for  other  pharmaceutical  companies.  At  UCSD,  he  founded  the  MDS  Center  of  Excellence  and  led  the  Hematology  Disease  Team  from  2017  to  2019.  There  he  has
directed several clinical studies and served as an advisor for numerous companies including Celgene, Takeda, AbbVie, Astex, Genoptix, Forty Seven, PersImmune, and
Daiichi-Sankyo.  Outside  UCSD,  Dr.  Bejar  sits  on  the  Scientific  Advisory  Board  for  the  MDS  Foundation,  is  a  prior  member  of  the  National  Comprehensive  Cancer
Network  Guidelines  Committee,  and  has  led  projects  for  the  International  Working  Group  for  MDS.  He  is  frequently  invited  to  speak  at  national  and  international
meetings and has published articles in a variety of journals including The New England Journal of Medicine, Journal of Clinical Oncology, Leukemia, Blood, and Blood
Advances. Dr. Bejar completed his fellowship at the Dana-Farber Cancer Institute and has been board certified in Hematology and Oncology. He completed his internship
in  Internal  Medicine  at  the  University  of  Chicago  followed  by  his  residency  at  the  Brigham  and  Women’s  Hospital  in  Boston  where  he  later  served  a  Medical  Chief
Resident and an Instructor in Hematology. He holds an M.D. degree and Neuroscience Ph.D. from UCSD and a BSc. in Physics from MIT.

10

 
 
 
 
 
 
 
 
 
 
 
Corporate Information

Aptose  is  a  publicly  traded  company  governed  by  the  CBCA.  Our  headquarters  are  located  at  251  Consumers  Road,  Suite  1105  Toronto,  Ontario,  Canada  M2J  4R3
(telephone: 647-479-9828), and our executive offices are located at 12770 High Bluff Drive, Suite 120, San Diego, CA 92130 (telephone: 858-926-2730).

We  file  annual,  quarterly,  current  reports,  proxy  statements  and  other  information  with  the  Securities  and  Exchange  Commission  (the  “SEC”).  The  SEC  maintains  an
Internet site that contains our public filings and other information regarding the Company, at www.sec.gov. We make these reports available free of charge at our website
http://www.aptose.com (under the “Investors — Financial Information” caption).

Prior  to  December  31,  2018,  Aptose  was  a  foreign  private  issuer,  and  in  compliance  with  SEC  regulations,  filed  its  Quarterly  reports  on  Form  6-Ks,  and  its  Annual
Reports on either Forms F-20 or F-40. These reports were made available on our website as soon as reasonably practicable after their filing with, or furnishing to, the
SEC.

We are also a reporting issuer under the securities laws of every province of Canada.

Cautionary Note Regarding Forward-Looking Statements and Risk Factor Summary

This Annual Report on Form 10-K contains forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995 and
“forward-looking information” within the meaning of applicable Canadian securities law. We refer to such forward-looking statements and forward-looking information
collectively as “forward-looking statements”. These statements relate to future events or future performance and reflect our expectations and assumptions regarding our
growth,  results  of  operations,  performance  and  business  prospects  and  opportunities.  Such  forward-looking  statements  reflect  our  current  beliefs  and  are  based  on
information currently available to us. In some cases, forward-looking statements can be identified by terminology such as “may”, “would”, “could”, “will”, “should”,
“expect”, “plan”, “intend”, “anticipate”, “believe”, “estimate”, “predict”, “potential”, “continue” or the negative of these terms or other similar expressions concerning
matters that are not historical facts. The forward-looking statements in this Annual Report on Form 10-K include, among others, statements regarding our future operating
results, economic performance and product development efforts and statements in respect of:

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our ability to obtain the substantial capital we require to fund research and operations;

our business strategy;

our clinical development plans;

our plans to conduct clinical trials and preclinical programs;

our ability to accrue appropriate numbers and types of patients;

our reliance on external contract research/manufacturing organizations for certain activities;

our plans to secure and maintain strategic partnerships to assist in the further development of our product candidates and to build our pipeline;

our ability to file and maintain intellectual property to protect our pharmaceutical assets;

potential exposure to legal actions and potential need to take action against other entities;

our expectations regarding the progress and the successful and timely completion of the various stages of our drug discovery, drug synthesis and
formulation, preclinical and clinical studies and the regulatory approval process;

our plans, objectives, expectations and intentions; and

other statements including words such as “anticipate”, “contemplate”, “continue”, “believe”, “plan”, “estimate”, “expect”, “intend”, “will”,
“should”, “may”, and other similar expressions.

The forward-looking statements contained in this Annual Report on Form 10-K reflect our current views with respect to future events, are subject to significant risks and
uncertainties, and are based upon a number of estimates and assumptions that, while considered reasonable by us, are inherently subject to significant business, economic,
competitive, political and social uncertainties and contingencies. Forward-looking statements contained in this Annual Report on Form 10-K are made as of the date of
this Annual Report on Form 10-K.

Except as required under applicable securities legislation, we undertake no obligation to publicly update or revise forward-looking statements, whether as a result of new
information, future events or otherwise.

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Risk Factor Summary

Many factors could cause our actual results, performance or achievements to be materially different from any future results, performance, or achievements that may be
expressed or implied by such forward-looking statements, including, among others:

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our lack of product revenues and net losses and a history of operating losses;

our early stage of development, particularly the inherent risks and uncertainties associated with (i) developing new drug candidates generally,
(ii) demonstrating the safety and efficacy of these drug candidates in clinical studies in humans, and (iii) obtaining regulatory approval to
commercialize these drug candidates;

our need to raise substantial additional capital in the future and that we may be unable to raise such funds when needed and on acceptable terms;

further equity financing, which may substantially dilute the interests of our existing shareholders;

clinical studies and regulatory approvals of our drug candidates are subject to delays, and may not be completed or granted on expected
timetables, if at all, and such delays may increase our costs and could substantially harm our business;

our reliance on external contract research/manufacturing organizations for certain activities and if we are subject to quality, cost, or delivery issues
with the preclinical and clinical grade materials supplied by contract manufacturers, our business operations could suffer significant harm;

clinical studies are long, expensive and uncertain processes and the FDA, or other similar foreign regulatory agencies that we are required to
report to, may ultimately not approve any of our product candidates;

our operations could be adversely affected by events outside of our control, such as natural disasters, wars or health crises such as the COVID-19
pandemic.

our ability to comply with applicable governmental regulations and standards;

our inability to achieve our projected development goals in the time frames we announce and expect;

difficulties in enrolling patients for clinical trials may lead to delays or cancellations of our clinical trials;

our reliance on third-parties to conduct and monitor our preclinical studies;

our ability to attract and retain key personnel, including key executives and scientists;

any misconduct or improper activities by our employees;

our exposure to exchange rate risk;

our ability to commercialize our business attributed to negative results from clinical trials;

the marketplace may not accept our products or product candidates due to the intense competition and technological change in the biotechnical
and pharmaceuticals, and we may not be able to compete successfully against other companies in our industries and achieve profitability;

our ability to obtain and maintain patent protection;

our ability to afford substantial costs incurred with defending our intellectual property;

our ability to protect our intellectual property rights and not infringe on the intellectual property rights of others;

our business is subject to potential product liability and other claims;

potential exposure to legal actions and potential need to take action against other entities;

commercialization limitations imposed by intellectual property rights owned or controlled by third parties;

our ability to maintain adequate insurance at acceptable costs;

our ability to find and enter into agreements with potential partners;

extensive government regulation;

data security incidents and privacy breaches could result in increased costs and reputational harm;

our share price has been and is likely to continue to be volatile;

future sales of our Common Shares by us or by our existing shareholders could cause our share price to drop;

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changing global market and financial conditions;

changes in an active trading market in our Common Shares;

difficulties by non-Canadian investors to obtain and enforce judgments against us because of our Canadian incorporation and presence;

potential adverse U.S. federal tax consequences for U.S. shareholders because we are a “passive foreign investment company”;

our “smaller reporting company” status;

any failures to maintain an effective system of internal controls may result in material misstatements of our financial statements, or cause us to fail
to meet our reporting obligations or fail to prevent fraud;

our broad discretion in how we use the proceeds of the sale of Common Shares;

our ability to expand our business through the acquisition of companies or businesses; and

other risks detailed from time-to-time in our on-going filings with the SEC and Canadian securities regulators, and those which are discussed in
Item 1A. Risk Factors in this Annual Report on Form 10-K.

Should one or more of these risks or uncertainties materialize, or should the assumptions described in the Item 1A. Risk Factors in this Annual Report on Form 10-K
underlying those forward-looking statements prove incorrect, actual results may vary materially from those described in the forward-looking statements.

Although we have attempted to identify factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements,
there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Forward-looking statements are based upon our beliefs,
estimates  and  opinions  at  the  time  they  are  made  and  we  undertake  no  obligation  to  update  forward-looking  statements  if  these  beliefs,  estimates  and  opinions  or
circumstances should change, except as required by applicable law. There can be no assurance that forward-looking statements will prove to be accurate, as actual results
and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.

We qualify all the forward-looking statements contained in this Annual Report on Form 10-K by the foregoing cautionary statements.

ITEM 1A. RISK FACTORS

Risk Factors and Uncertainties

Any of the risks and uncertainties described below could significantly and negatively affect our business, prospects, financial condition, operating results, or credit ratings,
which could cause the trading price of our Common Shares to decline. Additional risks and uncertainties not presently known to us, or risks that we currently consider
immaterial, could also impair our business operations or financial condition. The following discussion of risk factors contains “forward-looking” statements, as discussed
above.

Risks Related to our Business

We are an early stage development company with no revenues from product sales.

We are at an early stage of development. None of our potential products has obtained regulatory approval for commercial use and sale in any country and as such, no
revenues have resulted from product sales. Significant additional investment will be necessary to complete the development of any of our product candidates. Preclinical
and clinical trial work must be completed before our potential products could be ready for use within the markets that we have identified. We may fail to develop any
products, obtain regulatory approvals, enter clinical trials or commercialize any products. We do not know whether any of our potential product development efforts will
prove to be effective, meet applicable regulatory standards, obtain the requisite regulatory approvals, be capable of being manufactured at a reasonable cost or be accepted
in the marketplace. We also do not know whether sales, license fees or related royalties will allow us to recoup any investment we make in the commercialization of our
products.

The  product  candidates  we  are  currently  developing  are  not  expected  to  be  commercially  viable  for  at  least  the  next  several  years  and  we  may  encounter  unforeseen
difficulties or delays in commercializing our product candidates. In addition, our potential products may not be effective or may cause undesirable side effects.

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Our product candidates require significant funding to reach regulatory approval assuming positive clinical results. We are currently conducting Phase 1 clinical trials with
our product candidates HM43239 and luxeptinib. Significant additional capital will be necessary to complete the Phase 1 clinical trials, and if required, Phase 2 or Phase 3
clinical  trials.  Such  funding  for  our  product  candidates  may  be  difficult,  or  impossible  to  raise  in  the  public  or  private  markets  or  through  partnerships.  If  funding  or
partnerships are not readily attainable, the development of our product candidates may be significantly delayed or stopped altogether. The announcement of a delay or
discontinuation of development would likely have a negative impact on our share price.

We need to raise additional capital.

We have an ongoing need to raise additional capital. To obtain the necessary capital, we must rely on some or all of the following: additional share issues, debt issuances
(including promissory notes), collaboration agreements or corporate partnerships and grants and tax credits to provide full or partial funding for our activities. Additional
funding may not be available on terms that are acceptable to us or in amounts that will enable us to carry out our business plan. Although, as of the date of this report, the
COVID‑19  pandemic  did  not  have  and  we  do  not  expect  that  it  will  have  a  significant  impact  on  our  liquidity  and  capital  resources,  the  extent  to  which  COVID-19
impacts our business will depend on future developments, which are highly uncertain and cannot be predicted, including the scope, severity and duration of the pandemic,
the actions taken to contain the pandemic or mitigate its impact, and the direct and indirect economic effects of the pandemic and containment measures, among other
future developments. As such, our ability to raise additional funds could be affected by adverse market conditions resulting from the COVID-19 pandemic and delays
related to COVID‑19 in enrollment in our trial.

Our need for capital may require us to:

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engage in equity financings that could result in significant dilution to existing investors;

delay or reduce the scope of or eliminate one or more of our development programs;

obtain funds through arrangements with collaborators or others that may require us to relinquish rights to technologies, product candidates or products
that we would otherwise seek to develop or commercialize ourselves;

license rights to technologies, product candidates or products on terms that are less favorable to us than might otherwise be available;

considerably reduce operations; or

cease our operations.

In addition, sales of a substantial number of our Common Shares in the public markets, or the perception that such sales could occur, could depress the market price of our
Common Shares and impair our ability to raise capital through the sale of additional equity securities.

Our operations could be adversely affected by events outside of our control, such as natural disasters, wars or health crises such as the COVID-19 pandemic.

We  may  be  impacted  by  business  interruptions  resulting  from  pandemics  and  public  health  emergencies,  including  those  related  to  COVID-19,  geopolitical  actions,
including war and terrorism or natural disasters including earthquakes, typhoons, floods and fires. An outbreak of infectious disease, a pandemic or a similar public health
threat, such as the COVID-19 pandemic, or a fear of any of the foregoing, could adversely impact us by causing operating, manufacturing, supply chain, clinical trial and
project  development  delays  and  disruptions,  labour  shortages,  travel  and  shipping  disruption  and  shutdowns  (including  as  a  result  of  government  regulation  and
prevention measures). Although, as of the date of this report, we do not expect that COVID‑19 will have a significant impact on our liquidity and capital resources, the
extent to which COVID-19 impacts our business will depend on future developments, which are highly uncertain and cannot be predicted, including the scope, severity
and  duration  of  the  pandemic,  the  actions  taken  to  contain  the  pandemic  or  mitigate  its  impact,  and  the  direct  and  indirect  economic  effects  of  the  pandemic  and
containment measures, among other future developments. We may incur expenses or delays relating to such events outside of our control, which could have a material
adverse impact on our business, operating results and financial condition.

We have a history of operating losses. We expect to incur net losses and we may never achieve or maintain profitability.

We have not been profitable since our inception in 1986. We reported net losses of $65.4 million in the fiscal year ended December 31, 2021, $55.2 million in the fiscal
year ended December 31, 2020 and $26.3 million in the fiscal year ended December 31, 2019, and as of December 31, 2021, we had an accumulated deficit of $422.5
million.

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We have not generated any significant revenue to date and it is possible that we will never have sufficient product sales revenue (if any) to achieve profitability. We expect
to  continue  to  incur  losses  for  at  least  the  next  several  years  as  we  or  our  collaborators  and  licensees  pursue  clinical  trials  and  research  and  development  efforts.  To
become profitable, we, either alone or with our collaborators and licensees, must successfully develop, manufacture and market our current product candidates HM43239
or luxeptinib, as well as continue to identify, develop, manufacture and market new product candidates. It is possible that we will never have significant product sales
revenue or receive royalties on our licensed product candidates. If funding is insufficient at any time in the future, we may not be able to develop or commercialize our
products, take advantage of business opportunities or respond to competitive pressures.

We  currently  do  not  earn  any  revenues  from  our  drug  candidates  and  are  therefore  considered  to  be  in  the  development  stage.  The  continuation  of  our  research  and
development activities and the commercialization of the targeted therapeutic products are dependent upon our ability to successfully finance and complete our research
and development programs through a combination of equity financing and payments from strategic partners. We have no current sources of significant payments from
strategic partners.

We heavily rely on the capabilities and experience of our key executives and scientists and the loss of any of them could affect our ability to develop our products.

The loss of our executive officers could harm our operations and our ability to achieve strategic objectives. While we have employment agreements with our executive
officers, such employment agreements do not guarantee their retention. We also depend on our scientific and clinical collaborators and advisors, all of whom have outside
commitments that may limit their availability to us. In addition, we believe that our future success will depend in large part upon our ability to attract and retain highly
skilled  scientific,  managerial,  medical,  clinical  and  regulatory  personnel,  particularly  as  we  expand  our  activities  and  seek  regulatory  approvals  for  clinical  trials.  We
routinely enter into consulting agreements with our scientific and clinical collaborators and advisors, key opinion leaders and academic partners in the ordinary course of
our  business.  We  also  enter  into  contractual  agreements  with  physicians  and  institutions  who  will  recruit  patients  into  our  clinical  trials  on  our  behalf  in  the  ordinary
course of our business. Notwithstanding these arrangements, we face significant competition for these types of personnel from other companies, research and academic
institutions, government entities and other organizations. We cannot predict our success in hiring or retaining the personnel we require for continued growth. The loss of
the services of any of our executive officers or other key personnel could potentially harm our business, operating results or financial condition.

Our employees may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements, which could have a
material adverse effect on our business.

We  are  exposed  to  the  risk  of  employee  fraud  or  other  misconduct.  Misconduct  by  employees  could  include  failures  to  comply  with  FDA/Health  Canada  regulations,
provide accurate information to the FDA/Health Canada, comply with manufacturing standards we have established, comply with federal, state and provincial health-care
fraud and abuse laws and regulations, report financial information or data accurately or disclose unauthorized activities to us. In particular, sales, marketing and business
arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, kickbacks, self-dealing and other abusive practices. These
laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other
business arrangements. Employee misconduct could also involve the improper use of information obtained in the course of clinical trials, which could result in regulatory
sanctions and serious harm to our reputation. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those
actions could have a substantial impact on our business and results of operations, including the imposition of substantial fines or other sanctions.

We have no sales, marketing or distribution experience and would have to invest significant financial and management resources to establish these capabilities.

We  have  no  sales,  marketing  or  distribution  experience.  We  currently  expect  to  rely  heavily  on  third  parties  to  launch  and  market  our  products,  if  they  are  approved.
However, if we elect to develop internal sales, distribution and marketing capabilities, we will need to invest significant financial and management resources. For products
where we decide to perform sales, marketing and distribution functions ourselves, we could face a number of additional risks, including: 

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we may not be able to attract and build a significant marketing or sales force;

the cost of establishing a marketing or sales force may not be justifiable in light of the revenues generated by any particular product; and

our direct sales and marketing efforts may not be successful.

If we are unable to develop our own sales, marketing and distribution capabilities, we will not be able to successfully commercialize our products without reliance on
third parties.

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We may expand our business through the acquisition of companies or businesses or by entering into collaborations or by in-licensing product candidates, each of
which could disrupt our business and harm our financial condition.

We may in the future seek to expand our pipeline and capabilities by acquiring one or more companies or businesses, entering into collaborations or in-licensing one or
more  product  candidates.  For  example,  in  June  2016,  we  entered  into  a  definitive  agreement  with  CG,  granting  Aptose  an  exclusive  option  to  research,  develop  and
commercialize CG-806 in all countries of the world except Korea, for all fields of use, and in November 2021 we entered into an agreement with Hanmi granting Aptose
exclusive worldwide rights to develop and commercialize HM43239.

Acquisitions, collaborations and in-licenses involve numerous risks, including, but not limited to:

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substantial cash expenditures;

technology development risks;

potentially dilutive issuances of equity securities;

incurrence of debt and contingent liabilities, some of which may be difficult or impossible to identify at the time of acquisition;

difficulties in assimilating the operations of the acquired companies;

potential disputes regarding contingent consideration;

diverting our management’s attention away from other business concerns;

entering markets in which we have limited or no direct experience;

potential loss of our key employees or key employees of the acquired companies or businesses; and

failure of the in-licenses agents or technologies to deliver the desired activities or functions.

We have experience in entering collaborations and in-licensing product candidates; however, we cannot provide assurance that any acquisition, collaboration or in-license
will result in short-term or long-term benefits to us. We may incorrectly judge the value or worth of an acquired company or business or in-licensed product candidate. In
addition, our future success would depend in part on our ability to manage the rapid growth associated with some of these acquisitions, collaborations and in-licenses. We
cannot assure you that we would be able to successfully combine our business with that of acquired businesses, manage a collaboration or integrate in-licensed product
candidates. Furthermore, the development or expansion of our business may require a substantial capital investment by us.

Fluctuations in exchange rates can cause us to incur losses.

We may be exposed to fluctuations of the U.S. dollar against certain other currencies because we hold most of our cash and cash equivalents in U.S. dollars, while we
incur some of our expenses in foreign currencies, primarily the Canadian dollar. Fluctuations in the value of currencies could cause us to incur currency exchange losses,
and we do not currently employ a hedging strategy against exchange rate risk. As a result, changes in the exchange rate between the Canadian dollar and the U.S. dollar
could materially impact our reported results of operations and distort period to period comparisons. In particular, to the extent that foreign currency-denominated (i.e.,
non-U.S.  dollar)  monetary  assets  do  not  equal  the  amount  of  our  foreign  currency  denominated  monetary  liabilities,  foreign  currency  gains  or  losses  could  arise  and
materially impact our financial statements. As a result of such foreign currency fluctuations, it could be more difficult to detect underlying trends in our business and
results  of  operations.  In  addition,  to  the  extent  that  fluctuations  in  currency  exchange  rates  cause  our  results  of  operations  to  differ  from  our  expectations  or  the
expectations of our investors, the trading price of our Common Shares could be adversely affected.

Risks Related to Development, Clinical Testing and Regulatory Approval of Our Product Candidates

Clinical trials are long, expensive and uncertain processes and the FDA or Health Canada may ultimately not approve any of our product candidates. We may never
develop any commercial drugs or other products that generate revenues.

In the past five years, none of our product candidates has received regulatory approval for commercial use and sale in North America. We cannot market a pharmaceutical
product in any jurisdiction until it has completed thorough preclinical testing and clinical trials in addition to that jurisdiction’s extensive regulatory approval process.
Approval in one country does not assure approval in another country. In general, significant research and development and clinical studies are required to demonstrate the
safety and effectiveness of our product candidates before we can submit any applications for regulatory approval.

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Clinical trials are long, expensive and uncertain processes. Clinical trials may not start or be on schedule and the FDA or Health Canada or any other regulatory body may
not ultimately approve our product candidates for commercial sale in the relevant territory. The clinical trials of any of our drug candidates could be unsuccessful, which
would prevent us from advancing, commercializing or partnering the drug.

Even if the results of our preclinical studies or clinical trials are initially positive, it is possible that we will obtain different results in the later stages of drug development
or that results seen in clinical trials will not continue with longer term treatment. Positive results in Phase 1 clinical trials may not necessarily repeat in larger Phase 2 or
Phase 3 clinical trials.

Our preclinical studies and clinical trials may not generate positive results that will allow us to move towards the commercial use and sale of our product candidates.
Furthermore,  negative  preclinical  or  clinical  trial  results  may  cause  our  business,  financial  condition,  or  results  of  operations  to  be  materially  adversely  affected.  Our
HM43239  and  luxeptinib  product  candidates  are  currently  being  evaluated  in  Phase  1  studies,  and  are  expected  to  undergo  many  years  of  testing  and  regulatory
examinations prior to any potential regulatory approvals.

Preparing,  submitting  and  advancing  applications  for  regulatory  approval  of  products  is  complex,  expensive  and  time  intensive  and  entails  significant  uncertainty.  A
commitment  of  substantial  resources  to  conduct  time-consuming  research,  preclinical  studies  and  clinical  trials  is  required  if  we  are  to  complete  development  of  our
products.

Clinical trials of our products require that we identify and enroll a large number of patients with the illness under investigation. We may not be able to enroll a sufficient
number of appropriate patients to complete our clinical trials in a timely manner, particularly in smaller indications and indications where there is significant competition
for patients. If we experience difficulty in enrolling a sufficient number of patients to conduct our clinical trials, we may need to delay or terminate ongoing clinical trials
and will not accomplish objectives material to our success. Delays in planned patient enrollment or lower than anticipated event rates in our current clinical trials or future
clinical trials also may result in increased costs, program delays, or both.

In addition, unacceptable toxicities or adverse side effects may occur at any time in the course of preclinical studies or human clinical trials or, if any product candidates
are successfully developed and approved for marketing, during commercial use of any approved products. The appearance of any unacceptable toxicities or adverse side
effects could interrupt, limit, delay or abort the development of any of our product candidates or, if previously approved, necessitate their withdrawal from the market.
Furthermore, disease resistance or other unforeseen factors may limit the effectiveness of our potential products.

Our failure to develop safe and commercially viable drugs would substantially impair our ability to generate revenues and sustain our operations and would materially
harm our business and adversely affect our share price.

We may not achieve our projected development goals in the time frames we announce and expect.

We set goals for, and make public statements regarding, the expected timing of the accomplishment of objectives material to our success, such as the commencement and
completion of clinical trials, the submission of a drug-regulatory application, and the expected costs to develop our product candidates. The actual timing and costs of
these events can vary dramatically due to factors within and beyond our control, such as delays or failures in our IND submissions or clinical trials, issues related to the
manufacturing of drug supply, uncertainties inherent in the regulatory approval process, market conditions and interest by partners in our product candidates, among other
things. Our clinical trials may not be completed, we may not make regulatory submissions or receive regulatory approvals as planned; or we may not secure partnerships
for any of our product candidates. Any failure to achieve one or more of these milestones as planned would have a material adverse effect on our business, financial
condition and results of operations.

Although, as of the date of this report, we do not foresee material delays to the enrollment of patients or timelines for our trials due to COVID-19, the extent to which
COVID-19 will impact the projected development goals will depend on future developments, which are highly uncertain and cannot be predicted. In the beginning of
April 2020 we learned that certain of our larger sites would not be able to enroll new patients on the fourth dose level of luxeptinib due to the current environment caused
by COVID-19 and we therefore expect a slowdown in enrollment at these sites. While it is difficult to estimate the duration and impact of COVID-19 on the larger clinical
sites and regional cancer care sites, as of the date of this report, we have not experienced and do not foresee material delays to the enrollment of patients or timelines for
the luxeptinib Phase 1a/b B-cell malignancy trial due to the variety of clinical sites that we have actively recruited for this trial. While as of the date of this report we have
not experienced any material delays in our HM43239 and luxeptinib Phase 1 clinical studies in AML due to COVID‑19, we are conducting site initiation visits remotely
which could result in delays in site activations and negatively impact this trial. Additionally, COVID‑19 could negatively impact patient enrolment if our clinical sites are
unable to enroll patients due to either a lack of administrative resources at their sites or decisions made at the clinical sites to limit patient exposure to COVID‑19.

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Delays in clinical testing could result in delays in commercializing our product candidates and our business may be substantially harmed.

We cannot predict whether any clinical trials will begin as planned, will need to be restructured or will be completed on schedule, if at all. Our product development costs
will  increase  if  we  experience  delays  in  clinical  testing.  Significant  clinical  trial  delays  could  shorten  any  periods  during  which  we  may  have  the  exclusive  right  to
commercialize our product candidates or allow our competitors to bring products to market before us, which would impair our ability to successfully commercialize our
product candidates and may harm our financial condition, results of operations and prospects. The completion of clinical trials for our products, including the HM43239
and luxeptinib clinical trials may be delayed for a number of reasons, including delays related, but not limited, to:

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failure by regulatory authorities to grant permission to proceed with a clinical trial;

a regulatory decision to place or placing the clinical trial on hold;

patients failing to enroll or remain in our trials at the rate we expect;

suspension or termination of clinical trials by regulators for many reasons, including concerns about patient safety or failure of our contract
manufacturers to comply with cGMP requirements;

any changes to our manufacturing process that may be necessary or desired;

delays or failure to obtain GMP-grade clinical supply from contract manufacturers of our products necessary to conduct clinical trials;

product candidates demonstrating a lack of safety or efficacy during clinical trials;

patients choosing an alternative treatment for the indications for which we are developing any of our product candidates or participating in competing
clinical trials;

patients failing to complete clinical trials due to dissatisfaction with the treatment, side effects or other reasons;

reports of clinical testing on similar technologies and products raising safety and/or efficacy concerns;

competing clinical trials and scheduling conflicts with participating clinicians;

clinical investigators not performing our clinical trials on their anticipated schedule, dropping out of a trial, or employing methods not consistent with
the clinical trial protocol, regulatory requirements or other third parties not performing data collection and analysis in a timely or accurate manner;

failure of our contract research organizations, or CROs, to satisfy their contractual duties or meet expected deadlines;

inspections of clinical trial sites by regulatory authorities or IRBs, or ethics committees or boards finding regulatory violations that require us to
undertake corrective action, resulting in suspension or termination of one or more sites or the imposition of a clinical hold on the entire study;

one or more IRBs or ethics committees or boards rejecting, suspending or terminating the study at an investigational site, precluding enrollment of
additional subjects, or withdrawing its approval of the trial; or

failure to reach agreement on acceptable terms with prospective clinical trial sites.

Our  product  development  costs  will  increase  if  we  experience  delays  in  testing  or  approval  or  if  we  need  to  perform  more  or  larger  clinical  trials  than  planned.
Additionally, changes in regulatory requirements and policies may occur, and we may need to amend study protocols to reflect these changes. Amendments may require
us to resubmit our study protocols to regulatory authorities or IRBs or ethics committees or boards for re-examination, which may impact the cost, timing or successful
completion of a trial. Delays or increased product development costs may have a material adverse effect on our business, financial condition and prospects.

We  rely  on  contract  manufacturers  over  whom  we  have  limited  control.  If  we  are  subject  to  quality,  cost  or  delivery  issues  with  the  preclinical  and  clinical  grade
materials supplied by contract manufacturers, our business operations could suffer significant harm.

We rely on CMOs to manufacture our product candidates for some preclinical studies and clinical trials. We rely on CMOs for manufacturing, filling, packaging, storing
and shipping of drug product in compliance with cGMP regulations applicable to our products. The FDA and other regulatory agencies ensure the quality of drug products
by  carefully  monitoring  drug  manufacturers’  compliance  with  cGMP  regulations.  The  cGMP  regulations  for  drugs  contain  minimum  requirements  for  the  methods,
facilities and controls used in manufacturing, processing and packing of a drug product.

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We  contracted  with  multiple  CMOs  for  the  manufacture  of  HM43239  and  luxeptinib  to  supply  the  active  ingredient  and  then  drug  product  for  our  clinical  trials.  The
synthesis of luxeptinib is challenging from a scale-up synthetic chemistry perspective. We pre-qualified CMOs to have the capacity, the systems and the experience to
supply HM43239 and luxeptinib for our clinical trials. We have qualified the manufacturing facilities and the FDA has also performed site audits for our selected CMOs.
In  spite  of  the  efforts  to  prequalify  CMOs,  delays  and  errors  may  occur,  and  any  such  manufacturing  failures,  delays  or  compliance  issues  could  cause  delays  in  the
completion of our clinical trial programs.

There can be no assurances that CMOs will be able to meet our timetable and requirements. We have contracted with alternate suppliers in the event our current CMOs
are unable to scale up production, or if our current CMOs otherwise experience any other significant problems in the manufacture of HM43239 and luxeptinib. However,
it is possible that all third-party manufacturing sources may experience failure or delays and may demand commercially unreasonable terms, which may lead to further
delays in the development of our product candidates. Further, contract manufacturers must operate in compliance with cGMP and failure to do so could result in, among
other things, the disruption of product supplies. Our dependence upon third parties for the manufacture of our products may adversely affect our profit margins and our
ability to develop and deliver products on a timely and competitive basis.

Although, as of the date of this report, we have not experienced any material delays in the manufacturing of HM43239 and luxeptinib due to COVID-19, the extent to
which it will impact the manufacturing of our products will depend on future developments, which are highly uncertain and cannot be predicted. Should our suppliers
involved in the manufacture of HM43239 and luxeptinib be required to shut down their facilities due to COVID-19 either due to lack of materials or personnel, our trials
would be negatively impacted. We are mitigating this risk by continuing to manufacture drug supply, but there is no guarantee that we will have enough drug to supply the
trial if any of our manufacturers have a sustained shut down in their operations.

Some components of our products are manufactured by third parties outside of the United States, and our business may be harmed by legal, regulatory, economic,
political and public health risks associated with international trade and those markets.

We have third-party manufacturing partners in South Korea, Germany and the United Kingdom; in addition, some materials used by our third-party manufacturers are
supplied by companies located in other countries, including China. Our reliance on suppliers and manufacturers in foreign markets creates risks inherent in doing business
in foreign jurisdictions, including: (a) the burdens of complying with a variety of foreign laws and regulations, including laws relating to the importation and taxation of
goods (b) public health crises, such as pandemics and epidemics, in the countries where our suppliers and manufacturers are located; (c) transportation interruptions or
increases  in  transportation  costs;  and  (d)  foreign  intellectual  property  infringement  risks.  For  example,  the  ongoing  COVID-19  pandemic  has  resulted  in  the  extended
shutdown of certain businesses and markets in many regions causing reduced availability for certain pharmaceutical ingredients. The current public health crisis or any
further political developments or health concerns in markets in which our products are manufactured or from which we obtain necessary pharmaceutical ingredients could
adversely affect the supply of our drug products and, in turn, our business, financial condition, and results of operations.

If we have difficulty enrolling patients in clinical trials, the completion of the trials may be delayed or cancelled.

As our product candidates advance from preclinical testing to clinical testing, and then through progressively larger and more complex clinical trials, we will need to
enroll an increasing number of patients that meet our eligibility criteria. There is significant competition for recruiting cancer patients in clinical trials, and we may be
unable to enroll the patients we need to complete clinical trials for cancer indications on a timely basis or at all. Certain factors that affect enrollment of patients in our
clinical trials are impacted by external forces that may be beyond our control. Such factors include, but are not limited to, the following:

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size and nature of the patient population;

eligibility and exclusion criteria for the trial;

design of the study protocol;

competition with other companies for clinical sites or patients;

the perceived risks and benefits of the product candidate under study;

the patient referral practices of physicians; and

the number, availability, location and accessibility of clinical trial sites.

Although, as of the date of this report, we do not foresee material delays to the enrollment of patients or timelines for our trials due to COVID-19, the extent to which
COVID-19 will impact the projected development goals will depend on future developments, which are highly uncertain and cannot be predicted.

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If  we  are  unable  to  successfully  develop  companion  diagnostics  for  our  therapeutic  product  candidates,  or  experience  significant  delays  in  doing  so,  we  may  not
achieve marketing approval or realize the full commercial potential of our therapeutic product candidates.

We  plan  to  develop  companion  diagnostics  for  our  therapeutic  product  candidates.  We  expect  that,  at  least  in  some  cases,  regulatory  authorities  may  require  the
development  and  regulatory  approval  of  a  companion  diagnostic  as  a  condition  to  approving  our  therapeutic  product  candidates.  We  have  limited  experience  and
capabilities  in  developing  or  commercializing  diagnostics  and  plan  to  rely  in  large  part  on  third  parties  to  perform  these  functions.  We  do  not  currently  have  any
agreement in place with any third party to develop or commercialize companion diagnostics for any of our therapeutic product candidates.

Companion diagnostics are subject to regulation by the FDA, Health Canada and comparable foreign regulatory authorities as medical devices and may require separate
regulatory  approval  or  clearance  prior  to  commercialization.  If  we,  or  any  third  parties  that  we  engage  to  assist  us,  are  unable  to  successfully  develop  companion
diagnostics for our therapeutic product candidates, or experience delays in doing so, our business may be substantially harmed.

We  rely  and  will  continue  to  rely  on  third  parties  to  conduct  and  monitor  many  of  our  preclinical  studies  and  our  clinical  trials,  and  their  failure  to  perform  as
required could cause substantial harm to our business.

We rely and will continue to rely on third parties to conduct a significant portion of our preclinical and clinical development activities. Preclinical activities include in vivo
studies providing access to specific disease models, pharmacology and toxicology studies, and assay development. Clinical development activities include trial design,
regulatory submissions, clinical patient recruitment, clinical trial monitoring, clinical data management and analysis, safety monitoring and project management, contract
manufacturing and quality assurance. If there is any dispute or disruption in our relationship with third parties, or if they are unable to provide quality services in a timely
manner and at a feasible cost, our active development programs will face delays. Further, if any of these third parties fails to perform as we expect or if their work fails to
meet regulatory requirements, our testing could be delayed, cancelled or rendered ineffective.

Negative results from clinical trials or studies of others and adverse safety events involving the targets of our products may have an adverse impact on our future
commercialization efforts.

From time to time, studies or clinical trials on various aspects of biopharmaceutical products are conducted by academic researchers, competitors or others. The results of
these studies or trials, when published, may have a significant effect on the market for the biopharmaceutical product that is the subject of the study. The publication of
negative results of studies or clinical trials or adverse safety events related to our product candidates, or the therapeutic areas in which our product candidates compete,
could adversely affect our share price and our ability to finance future development of our product candidates, and our business and financial results could be materially
and adversely affected.

The design or our execution of clinical trials may not support regulatory approval.

The design or execution of a clinical trial can determine whether its results will support regulatory approval and flaws in the design or execution of a clinical trial may not
become apparent until the clinical trial is well advanced. In some instances, there can be significant variability in safety or efficacy results between different trials of the
same  product  candidate  due  to  numerous  factors,  including  changes  in  trial  protocols,  differences  in  size  and  type  of  the  patient  populations,  adherence  to  the  dosing
regimen and other trial protocols and the rate of dropout among clinical trial participants. We do not know whether any Phase 2, Phase 3 or other clinical trials that we
may conduct will demonstrate consistent or adequate efficacy and safety to obtain regulatory approval to market our product candidates.

Further, the FDA, Health Canada and comparable foreign regulatory authorities will have some discretion in the approval process and in determining when or whether
regulatory approval will be obtained for any of our product candidates. Our product candidates may not be approved even if they achieve their primary endpoints in future
Phase 3 clinical trials or registration trials. The FDA, Health Canada or other regulatory authorities may disagree with our trial design and our interpretation of data from
preclinical studies and clinical trials. In addition, any of these regulatory authorities may change requirements for the approval of a product candidate even after reviewing
and providing comments or advice on a protocol for a pivotal Phase 3 clinical trial that has the potential to result in approval by the FDA, Health Canada or another
regulatory agency. In addition, any of these regulatory authorities may also approve a product candidate for fewer or more limited indications than we request or may
grant  approval  contingent  on  the  performance  of  costly  post-marketing  clinical  trials.  The  FDA,  Health  Canada  or  other  regulatory  authorities  may  not  approve  the
labeling claims that we believe would be necessary or desirable for the successful commercialization of our product candidates.

20

 
 
 
 
 
 
 
 
 
 
 
 
As  a  result  of  intense  competition  and  technological  change  in  the  biotechnical  and  pharmaceutical  industries,  the  marketplace  may  not  accept  our  products  or
product candidates, and we may not be able to compete successfully against other companies in our industry and achieve profitability.

Many of our competitors have:

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drug products that have already been approved or are in development;

large, well-funded research and development programs in the biotechnical and pharmaceutical fields;

substantially greater financial, technical and management resources, stronger intellectual property positions and greater manufacturing, marketing and
sales capabilities, areas in which we have limited or no experience; and

significantly greater experience than we do in undertaking preclinical testing and clinical trials of new or improved pharmaceutical products and
obtaining required regulatory approvals.

Consequently,  our  competitors  may  obtain  FDA,  Health  Canada  and  other  regulatory  approvals  for  product  candidates  sooner  and  may  be  more  successful  in
manufacturing and marketing their products than we or our collaborators are.

Our  competitors’  existing  and  future  products,  therapies  and  technological  approaches  will  compete  directly  with  the  products  we  seek  to  develop.  Current  and
prospective  competing  products  may  be  more  effective  than  our  existing  and  future  products  insofar  as  they  may  provide  greater  therapeutic  benefits  for  a  specific
problem or may offer easier delivery or comparable performance at a lower cost.

For luxeptinib in B cell malignancies, examples of companies that have developed or are pursuing different approaches to BTK inhibition, both for the wild type and to
the  C481S-mutant  forms,  include  AbbVie  (IMBRUVICA),  AstraZeneca  (CALQUENCE),  Beigene  Co.,  Ltd.  (Zanubrutinib),  Merck  (nemtabrutinib),  and  Eli  Lilly
(pirtobrutinib), among others.

For HM43239 and luxeptinib in AML, examples of companies that have developed or are pursuing different therapies include Jazz (VYXEOS), Pfizer (MYLOTARG),
Novartis  (RYDAPT),  Astellas  (XOSPATA),  AbbVie  (VENCLEXTA),  Daiichi  Sankyo  (quizartinib),  Arog  (crenolanib),  Agios/Servier  (TIBSOVO),  Celgene/BMS
(IDHIFA), Kronos Bio (entospletinib and lanraprenib), Curis (emavusertib), Syndax (SNDX-5613), and Kura (KO-539), among others.

Any  product  candidate  that  we  develop  and  that  obtains  regulatory  approval  must  then  compete  for  market  acceptance  and  market  share.  Our  products  may  not  gain
market  acceptance  among  physicians,  patients,  healthcare  payers,  insurers,  the  medical  community  and  other  stakeholders.  The  degree  of  market  acceptance  of  our
product candidates, if approved for commercial sale, will depend on a number of factors, including:

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●

●

●

efficacy and potential advantages compared to alternative treatments;

the ability to offer our product candidates for sale at competitive prices;

convenience and ease of administration compared to alternative treatments;

the willingness of the target patient population to try new therapies and of physicians to prescribe these therapies;

the strength of marketing and distribution support;

sufficient third-party coverage or reimbursement; and

the prevalence and severity of any side effects.

Further, any products we develop may become obsolete or face generic entry before we recover any expenses we incurred in connection with the development of these
products. As a result, we may never achieve profitability.

Risks Related to our Intellectual Property

We may be unable to obtain patents to protect our technologies from other companies with competitive products, and patents of other companies could prevent us
from manufacturing, developing or marketing our products.

Patent protection

The  patent  positions  of  pharmaceutical  and  biotechnology  companies  are  uncertain  and  involve  complex  legal  and  factual  questions.  The  United  States  Patent  and
Trademark Office (“USPTO”) and many other patent offices in the world have not established a consistent policy regarding the breadth of claims that they will allow in
biotechnology patents.

Our pending patent applications may not result in issued patents and our issued patents may not be held valid and enforceable if challenged. Competitors may be able to
circumvent  any  such  issued  patents  by  adoption  of  a  competitive,  though  non-infringing  product  or  process.  Interpretation  and  evaluation  of  pharmaceutical  or
biotechnology patent claims present complex and often novel legal and factual questions. Our business could be adversely affected by increased competition in the event
that any patent granted to it is held to be invalid or unenforceable or is inadequate in scope to protect our operations.

21

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Allowable patentable subject matter and the scope of patent protection obtainable may differ between jurisdictions. If a patent office allows broad claims, the number and
cost  of  patent  interference  proceedings  in  the  United  States,  or  analogous  proceedings  in  other  jurisdictions  and  the  risk  of  infringement  litigation  may  increase.  If  it
allows narrow claims, the risk of infringement may decrease, but the value of our rights under our patents, licenses and patent applications may also decrease.

The scope of the claims in a patent application can be significantly modified during prosecution before the patent is issued. Consequently, we cannot know whether our
pending  applications  will  result  in  the  issuance  of  patents  or,  if  any  patents  are  issued,  whether  they  will  provide  us  with  significant  proprietary  protection  or  will  be
circumvented, invalidated or found to be unenforceable.

Publication of discoveries in scientific or patent literature often lags behind actual discoveries. Patent applications filed in the United States generally will be published 18
months after the filing date unless the applicant certifies that the invention will not be the subject of a foreign patent application. In many other jurisdictions, such as
Canada, patent applications are published 18 months from the priority date. We may not be aware of such literature. Accordingly, we cannot be certain that the named
inventors of our products and processes were the first to invent that product or process or that we were the first to pursue patent coverage for our inventions.

In addition, United States patent laws may change which could prevent or limit us from filing patent applications or patent claims in the United States to protect our
products and technologies or limit the exclusivity periods that are available to patent holders for United States patents. For example, the Leahy-Smith America Invents
Act, (the “Leahy-Smith Act”) was signed into law in 2011 and includes a number of significant changes to United States patent law. These include changes to transition
from a “first-to-invent” system to a “first-to-file” system and to the way issued patents are challenged. These changes may favor larger and more established companies
that have more resources to devote to patent application filing and prosecution. It is not clear what, if any, impact the Leahy-Smith Act will ultimately have on the cost of
prosecuting our patent applications in the United States, our ability to obtain patents in the United States based on our discoveries and our ability to enforce or defend our
United States issued patents.

Until such time, if ever, that further patents are issued to us, we will rely upon the law of trade secrets to the extent possible given the publication requirements under
international patent treaty laws and/or requirements under foreign patent laws to protect our technology and our products incorporating the technology. In this regard, we
have  adopted  certain  confidentiality  procedures.  These  include:  limiting  access  to  confidential  information  to  certain  key  personnel;  requiring  all  directors,  officers,
employees and consultants and others who may have access to our intellectual property to enter into confidentiality agreements which prohibit the use of or disclosure of
confidential  information  to  third  parties;  and  implementing  physical  security  measures  designed  to  restrict  access  to  such  confidential  information  and  products.  Our
ability to maintain the confidentiality of our technology is crucial to our ultimate possible commercial success. The procedures adopted by us to protect the confidentiality
of  our  technology  may  not  be  effective,  third  parties  may  gain  access  to  our  trade  secrets  or  our  trade  secrets  or  those  of  our  collaborators  may  be  independently
discovered by others. Our collaborators, employees and consultants and other parties may not comply with the terms of their agreements with us, and we might be unable
to adequately enforce our rights or obtain adequate compensation for the damages caused by unauthorized disclosure or use of our trade secrets or know how. Further, by
seeking patent protection in various countries, it is inevitable that a substantial portion of our technology will become available to our competitors, through publication of
such patent applications.

Enforcement of intellectual property rights

Protection of the rights revealed in published patent applications can be complex, costly and uncertain. Our commercial success depends in part on our ability to maintain
and enforce our proprietary rights. If third parties engage in activities that infringe our proprietary rights, our management’s focus will be diverted and we may incur
significant costs in asserting our rights. We may not be successful in asserting our proprietary rights, which could result in our patents being held invalid or a court holding
that the third party is not infringing, either of which would harm our competitive position.

Others may design around our patented technology. We may have to participate in interference proceedings declared by the USPTO, European opposition proceedings, or
other analogous proceedings in other parts of the world to determine priority of invention and the validity of patent rights granted or applied for, which could result in
substantial cost and delay, even if the eventual outcome is favorable to us. Our pending patent applications, even if issued, may not be held valid or enforceable.

Our products and product candidates may infringe the intellectual property rights of others, or others may infringe on our intellectual property rights which could
increase our costs.

Our success also depends on avoiding infringement of the proprietary technologies of others. In particular, there may be certain issued patents and patent applications
claiming subject matter which we or our collaborators may be required to license in order to research, develop or commercialize HM43239 or luxeptinib. In addition, third
parties may assert infringement or other intellectual property claims against us. An adverse outcome in these proceedings could subject us to significant liabilities to third-
parties,  require  disputed  rights  to  be  licensed  from  third-parties  or  require  us  to  cease  or  modify  our  use  of  the  technology.  If  we  are  required  to  license  third-party
technology, a license under such patents and patent applications may not be available on acceptable terms or at all. Further, we may incur substantial costs defending
ourselves in lawsuits against charges of patent infringement or other unlawful use of another’s proprietary technology. We may also need to bring claims against others
who we believe are infringing our rights in order to become or remain competitive and successful. Any such claims can be time consuming and expensive to pursue.

22

 
 
 
 
 
 
 
 
 
 
 
 
We may incur substantial cost in defending our intellectual property.

While we believe that our products and technology do not infringe proprietary rights of others, third parties may assert infringement claims in the future and such claims
could be successful. Even if challenges are unsuccessful, we could incur substantial costs in defending ourselves against patent infringement claims brought by others or
in prosecuting suits against others. In addition, others may obtain patents that we would need to license, which may not be available to us on reasonable terms. Whether
we are able to obtain a necessary license would depend on the terms offered, the degree of risk of infringement and the need for the patent.

We have licensed important portions of our intellectual property from Hanmi and CG, and are subject to significant obligations under those license agreements.

The rights we hold under our license agreements with Hanmi and CG are critical to our business.

Our HM43239 program is built around patents exclusively in-licensed from Hanmi, which permit us to research, develop and commercialize HM43239 worldwide. Under
our  agreement  with  Hanmi,  we  are  subject  to  significant  obligations,  including  diligence  obligations  with  respect  to  development  and  commercialization  activities,
payment obligations upon achievement of certain milestones and royalties on product sales, as well as other material obligations. Hanmi is eligible for payments upon the
achievement of developmental, regulatory and commercial-based milestones, as well as tiered royalties on product sales.

Our luxeptinib program is built around patents exclusively in-licensed from CG, which permit us to research, develop and commercialize CG-806 worldwide except for
the  Republic  of  Korea.  Under  our  agreement  with  CG,  we  are  subject  to  significant  obligations,  including  diligence  obligations  with  respect  to  development  and
commercialization  activities,  payment  obligations  upon  achievement  of  certain  milestones  and  royalties  on  product  sales,  as  well  as  other  material  obligations.  CG  is
eligible for payments upon the achievement of developmental, regulatory and commercial-based milestones, as well as low single-digit royalties on product sales.

If there is any conflict, dispute, disagreement or issue of non-performance between us and Hanmi or CG regarding our rights or obligations under the respective license
agreements, including any conflict, dispute or disagreement arising from our failure to satisfy diligence or payment obligations under such agreements, Hanmi or CG may
have a right to terminate the respective license. The loss of this license agreement could materially and adversely affect our ability to use intellectual property that could
be critical to our drug discovery and development efforts, as well as our ability to enter into future collaboration, licensing and/or marketing agreements for one or more
affected drug candidates or development programs.

Our business depends, in part, on our ability to use technology that we have licensed or will in the future license from third parties, including Hanmi and CG, and, if
these licenses were terminated or if we were unable to license additional technology we may need in the future, our business will be adversely affected.

We currently hold licenses for certain technologies that are or may be critical to our current and subsequent product candidates. These include our exclusive license to
research,  develop  and  commercialize  luxeptinib  worldwide  except  for  the  Republic  of  Korea,  and  our  exclusive  license  to  develop  and  commercialize  HM43239
worldwide. Both licenses are subject to termination in the event of a breach by us of the license, if we fail to cure the breach following notice and the passage of a cure
period. We may need to acquire additional licenses in the future to technologies developed by others. Furthermore, future license agreements may require us to make
substantial  milestone  payments.  We  may  also  be  obligated  to  make  royalty  payments  on  the  sales,  if  any,  of  products  resulting  from  the  license.  The  termination  of  a
license or the inability to license future technologies on acceptable terms may adversely affect our ability to develop or sell our products.

Legal and Regulatory Risk

Our ability to develop, produce and market our products is subject to extensive government regulation.

Government regulation is a significant factor in the development, production and marketing of our products. Research and development, testing, manufacture, marketing
and  sales  of  pharmaceutical  products  or  related  products  are  subject  to  extensive  regulatory  oversight,  often  in  multiple  jurisdictions,  which  may  cause  significant
additional costs and/or delays in bringing products to market, and in turn, may cause significant losses to investors. The regulations applicable to our product candidates in
a given jurisdiction may change. Even if granted, regulatory approvals may include significant limitations on the uses for which products can be marketed or may be
conditioned on the conduct of post-marketing surveillance studies. Failure to comply with applicable regulatory requirements can, among other things, result in delay in
approving or refusal to approve a product candidate, interruptions of clinical trials or manufacturing, suspension or withdrawal of regulatory approval, warning letters, the
imposition  of  civil  penalties  or  other  monetary  payments,  product  recall  or  seizure,  operating  restrictions,  injunctions  or  criminal  prosecution.  In  addition,  regulatory
agencies many not approve the labeling claims that are necessary or desirable for the successful commercialization of our product candidates.

23

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Requirements  for  regulatory  approval  vary  widely  from  country  to  country.  Whether  or  not  approved  in  Canada  or  the  United  States,  regulatory  authorities  in  other
countries must approve a product prior to the commencement of marketing the product in those countries. The time required to obtain any such approval may be longer or
shorter than in Canada or the United States. Approved drugs, as well as their manufacturers, are subject to continuing and ongoing review, and discovery of problems with
these products or the failure to adhere to manufacturing or quality control requirements may result in regulatory restrictions being imposed.

Current  and  future  legislation  may  increase  the  difficulty  and  cost  for  us  to  obtain  marketing  approval  of  and  commercialize  our  product  candidates  and  may
adversely affect the prices we may obtain. 

In the United States and some foreign jurisdictions, there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system
that  could,  among  other  things,  prevent  or  delay  marketing  approval  of  our  product  candidates,  restrict  or  regulate  post  approval  activities  and  affect  our  ability  to
profitably sell any products for which we obtain marketing approval.

For example, in March 2010, the Patient Protection and Affordable Care Act, as amended by the Health Care Education Reconciliation Act, or collectively the Affordable
Care Act, was enacted to broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance remedies against fraud and abuse, add new
transparency requirements for health care and health insurance industries, impose new taxes and fees on the health industry and impose additional health policy reforms.
Additionally, the Drug Supply Chain Security Act, enacted in 2013, imposed new obligations on manufacturers of pharmaceutical products related to product tracking and
tracing.

Since its enactment, there have been judicial, executive and Congressional challenges to certain aspects of the Affordable Care Act, and we expect there will be additional
challenges and amendments to the Affordable Care Act in the future. On June 17, 2021, the United States Supreme Court dismissed the most recent judicial challenge to
the Affordable Care Act without specifically ruling on the constitutionality of the Affordable Care Act. Prior to the Supreme Court’s decision, President Biden issued an
executive order initiating a special enrollment period from February 15, 2021 through August 15, 2021 for purposes of obtaining health insurance coverage through the
Affordable Care Act marketplace. The executive order also instructed certain governmental agencies to review and reconsider their existing policies and rules that limit
access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create
unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the Affordable Care Act. It is possible that the Affordable Care Act will be
subject to judicial or Congressional challenges in the future. It is unclear how any such challenges and the healthcare reform measures of the Biden administration will
impact the Affordable Care Act and our business.

We expect ongoing initiatives in the United States and internationally to increase pressure on drug pricing. Regulations that mandate price controls and limitations on
patient access to products or establish prices paid by government entities or programs may impact product candidates that we may successfully develop. Pharmaceutical
product pricing is subject to enhanced government and public scrutiny and calls for reform. Some U.S. states have implemented, and other U.S. states are considering,
pharmaceutical price controls or patient access constraints under the Medicaid program, and some U.S. states are considering price-control regimes that would apply to
broader segments of their populations that are not Medicaid eligible. Efforts by government officials or legislators to implement measures to regulate prices or payments
for  pharmaceutical  products,  including  legislation  on  drug  importation,  could  have  an  adverse  effect  on  anticipated  revenues  from  product  candidates  that  we  may
successfully develop and for which we may obtain regulatory approval and may affect our overall financial condition and ability to develop drug candidates.

Legislative and regulatory proposals have also been made to expand post approval requirements and restrict sales and promotional activities for pharmaceutical products
in the US. Any healthcare reforms enacted in the future may, like the Affordable Care Act, be phased in over a number of years but, if enacted, could reduce our revenue,
increase our costs, or require us to revise the ways in which we conduct business or put us at risk for loss of business. We are not sure whether additional legislative
changes will be enacted, or whether the current regulations, guidance or interpretations will be changed, or what the impact of such changes on our business, if any, may
be.

In Canada, the Patented Medicine Prices Review Board (“PMPRB”) has jurisdiction to control prices of patented medicines that are considered excessive. Recent changes
to the regulations governing the PMPRB are intended to lower the prices of patented medicines even further. The PMPRB’s jurisdiction could extend to any of our drug
products that are approved in Canada and protected under Canadian patents, with an adverse effect on the prices that we would otherwise obtain for these drugs in the
relevant market.

24

 
 
 
 
 
 
 
 
 
 
Coverage and adequate reimbursement may not be available for our product candidates, which could make it difficult for us to sell our products profitably.

Market acceptance and sales of any drug candidates that we develop will depend in part on the extent to which reimbursement for these products and related treatments
will be available from third party payors, including government health administration authorities and private health insurers. Third party payors decide which drugs they
will pay for and establish reimbursement levels. Third party payors often rely upon Medicare coverage policy and payment limitations in setting their own reimbursement
policies. However, decisions regarding the extent of coverage and amount of reimbursement to be provided for each of our drug candidates will be made on a plan by plan
basis. One payor’s determination to provide coverage for a product does not assure that other payors will also provide coverage, and adequate reimbursement, for the
product.  Additionally,  a  third  party  payor’s  decision  to  provide  coverage  for  a  drug  does  not  imply  that  an  adequate  reimbursement  rate  will  be  approved.  Each  plan
determines whether or not it will provide coverage for a drug, what amount it will pay the manufacturer for the drug, and on what tier of its formulary the drug will be
placed.  The  position  of  a  drug  on  a  formulary  generally  determines  the  copayment  that  a  patient  will  need  to  make  to  obtain  the  drug  and  can  strongly  influence  the
adoption of a drug by patients and physicians. Patients who are prescribed treatments for their conditions and providers performing the prescribed services generally rely
on third party payors to reimburse all or part of the associated healthcare costs. Patients are unlikely to use our products unless coverage is provided and reimbursement is
adequate to cover a significant portion of the cost of our products. 

A primary trend in the U.S. healthcare industry and elsewhere is cost containment. Third party payors have attempted to control costs by limiting coverage and the amount
of  reimbursement  for  particular  medications.  We  cannot  be  sure  that  coverage  and  reimbursement  will  be  available  for  any  product  that  we  commercialize  and,  if
reimbursement is available, what the level of reimbursement will be. Inadequate coverage and reimbursement may impact the demand for, or the price of, any product for
which we obtain marketing approval. If coverage and adequate reimbursement is not available, or is available only to limited levels, we may not be able to successfully
commercialize any drug candidates that we develop.

Additionally, there have been a number of legislative and regulatory proposals to change the healthcare system in the United States and in some foreign jurisdictions,
including Canada, that could affect our ability to sell any future drugs profitably. These legislative and regulatory changes may negatively impact the reimbursement for
any future drugs, following approval.

We are subject to U.S. and Canadian healthcare laws and regulations, which could expose us to criminal sanctions, civil penalties, contractual damages, reputational
harm, fines, disgorgement, exclusion from participation in government healthcare programs, curtailment or restricting of our operations and diminished profits and
future earnings.

Healthcare providers, physicians and others will play a primary role in the recommendation and prescription of any products for which we obtain marketing approval. Our
future arrangements with healthcare providers, patients and third party payors could expose us to broadly applicable U.S. and Canadian laws and regulations relating to
fraud  abuse  and  healthcare  more  generally  that  may  constrain  the  business  or  financial  arrangements  and  collaborative  partners  through  which  we  market,  sell  and
distribute any products for which we obtain marketing approval.

Efforts to ensure that our collaborations with third parties, and our business generally, will comply with applicable U.S. and Canadian healthcare laws and regulations will
involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations
or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations are found to be in violation of any of these laws or any other
governmental  laws  and  regulations  that  may  apply  to  us,  we  may  be  subject  to  significant  civil,  criminal  and  administrative  penalties,  damages,  fines,  imprisonment,
exclusion of products from government funded healthcare programs, contractual damages, reputational harm, disgorgement, curtailment or restricting of our operations,
any of which could substantially disrupt our operations and diminish our profits and future earnings. If any of the physicians or other providers or entities with whom we
expect to do business is found not to be in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from
government funded healthcare programs. The risk of our being found in violation of these laws is increased by the fact that many of them have not been fully interpreted
by the regulatory authorities or the courts, and their provisions are open to a variety of interpretations.

If product liability, clinical trial liability or environmental liability claims are brought against us or we are unable to obtain or maintain product liability, clinical trial
or environmental liability insurance, we may incur substantial liabilities that could reduce our financial resources.

The clinical testing and commercial use of pharmaceutical products involves significant exposure to product liability, clinical trial liability, environmental liability and
other risks that are inherent in the testing, manufacturing and marketing of our products. These liabilities, if realized, could have a material adverse effect on our business,
results of operations and financial condition.

We have obtained limited product liability insurance coverage for our clinical trials on humans; however, our insurance coverage may be insufficient to protect us against
all  product  liability  damages.  Regardless  of  merit  or  eventual  outcome,  liability  claims  may  result  in  decreased  demand  for  a  future  product,  injury  to  reputation,
withdrawal of clinical trial volunteers, loss of revenue, costs of litigation, distraction of management and substantial monetary awards to plaintiffs. Additionally, if we are
required to pay a product liability claim, we may not have sufficient financial resources to complete development or commercialization of any of our product candidates
and our business and results of operations will be adversely affected. In general, insurance will not protect us against some of our own actions, such as negligence.

25

 
 
 
 
 
 
 
 
 
 
 
 
As our development activities progress towards the commercialization of product candidates, our liability coverage may not be adequate, and we may not be able to obtain
adequate  product  liability  insurance  coverage  at  a  reasonable  cost,  if  at  all.  Even  if  we  obtain  product  liability  insurance,  our  financial  position  may  be  materially
adversely  affected  by  a  product  liability  claim.  A  product  liability  claim  could  also  significantly  harm  our  reputation  and  delay  market  acceptance  of  our  product
candidates.  Additionally,  product  recalls  may  be  issued  at  the  direction  of  the  FDA,  other  government  agencies  or  other  companies  having  regulatory  control  for
pharmaceutical sales. If a product recall occurs in the future, such a recall could adversely affect our business, financial condition or reputation.

If  we  fail  to  comply  with  environmental,  health  and  safety  laws  and  regulations,  we  could  become  subject  to  fines  or  penalties  or  incur  costs  that  could  have  a
material adverse effect on the success of our business.

We  are  subject  to  numerous  environmental,  health  and  safety  laws  and  regulations,  including  those  governing  laboratory  procedures  and  the  handling,  use,  storage,
treatment and disposal of hazardous materials and wastes. Our operations involve the use of hazardous and flammable materials, including chemicals and radioactive and
biological materials. Our operations also produce hazardous waste products. We generally contract with third parties for the disposal of these materials and wastes. We
cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from our use of hazardous materials, we could
be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with civil or criminal fines and
penalties.

Although  we  maintain  workers’  compensation  insurance  to  cover  us  for  costs  and  expenses  we  may  incur  due  to  injuries  to  our  employees  resulting  from  the  use  of
hazardous materials, this insurance may not provide adequate coverage against potential liabilities. We do not maintain insurance for environmental liability or toxic tort
claims that may be asserted against us in connection with our storage or disposal of biological, hazardous or radioactive materials.

In addition, we may incur substantial costs in order to comply with current or future environmental, health and safety laws and regulations. These current or future laws
and  regulations  may  impair  our  research,  development  or  production  efforts.  Failure  to  comply  with  these  laws  and  regulations  also  may  result  in  substantial  fines,
penalties or other sanctions.

We may be unable to obtain partnerships for our product candidates, which could curtail future development and negatively affect our share price. In addition, our partners
might not satisfy their contractual responsibilities or devote sufficient resources to our partnership.

Our  strategy  for  the  research,  development  and  commercialization  of  our  products  requires  entering  into  various  arrangements  with  corporate  collaborators,  licensors,
licensees and others, and our commercial success is dependent upon these outside parties performing their respective contractual responsibilities. The amount and timing
of resources that such third parties will devote to these activities may not be within our control. These third parties may not perform their obligations as expected and our
collaborators may not devote adequate resources to our programs. In addition, we could become involved in disputes with our collaborators, which could result in a delay
or termination of the related development programs or result in litigation. We intend to seek additional collaborative arrangements to develop and commercialize some of
our products. We may not be able to negotiate collaborative arrangements on favorable terms, or at all, in the future, and our current or future collaborative arrangements
may not be successful.

If we cannot negotiate collaboration, license or partnering agreements, we may never achieve profitability and we may not be able to continue to develop our product
candidates. Continuing Phase 1, and commencing Phase 2 and Phase 3 clinical trials for HM43239 and luxeptinib would require significant amounts of funding and such
funding may not be available to us.

Risks Related to Our Common Shares

Our share price has been and is likely to continue to be volatile and an investment in our Common Shares could suffer a decline in value.

You should consider an investment in our Common Shares as risky and invest only if you can withstand a significant loss and wide fluctuations in the market value of
your investment. The market price of our Common Shares has been highly volatile and is likely to continue to be volatile. This leads to a heightened risk of securities
litigation pertaining to such volatility. Factors affecting our Common Share price include but are not limited to:

●

●

●

the progress of our pre-clinical and clinical trials;

our ability to obtain partners and collaborators to assist with the future development of our products;

general market conditions;

26

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
●

●

●

●

●

●

●

●

●

announcements of technological innovations or new product candidates by us, our collaborators or our competitors;

published reports by securities analysts;

developments in patent or other intellectual property rights;

the cash and investments held by us and our ability to secure future financing;

our ability to raise additional capital;

public concern as to the safety and efficacy of drugs that we and our competitors develop;

shareholder interest in our Common Shares;

low liquidity in the daily trading volume of our Common Shares; and

our ability to continue as a going concern.

Future sales of our Common Shares by us or by our existing shareholders could cause our share price to fall.

The  issuance  of  Common  Shares  by  us  could  result  in  significant  dilution  in  the  equity  interest  of  existing  shareholders  and  adversely  affect  the  market  price  of  our
Common Shares. Sales by existing shareholders of a large number of our Common Shares in the public market and the issuance of Common Shares in connection with
strategic alliances, or the perception that such additional sales could occur, could cause the market price of our Common Shares to decline and have an undesirable impact
on our ability to raise capital.

We are susceptible to stress in the global economy and therefore, our business may be affected by the current and future global financial conditions.

If the increased level of volatility and market turmoil that have marked recent years continue, our operations, business, financial condition and the trading price of our
Common Shares could be materially adversely affected. Furthermore, general economic conditions may have a great impact on us, including our ability to raise capital,
our commercialization opportunities and our ability to establish and maintain arrangements with others for research, manufacturing, product development and sales.

An active trading market in our Common Shares may not be sustained.

Our Common Shares are listed for trading on the Nasdaq Capital Market and the Toronto Stock Exchange. However, an active trading market in our Common Shares on
the stock exchanges may not be sustained and we may not be able to maintain our listings.

Certain Canadian laws could delay or deter a change of control.

Limitations  on  the  ability  to  acquire  and  hold  our  Common  Shares  may  be  imposed  by  the  Competition Act  in  Canada.  This  legislation  permits  the  Commissioner  of
Competition of Canada to review any acquisition of a significant interest in us. This legislation grants the Commissioner jurisdiction to challenge such an acquisition
before the Canadian Competition Tribunal if the Commissioner believes that it would, or would be likely to, result in a substantial lessening or prevention of competition
in any market in Canada. The Investment Canada Act subjects an acquisition of control of a company by a non-Canadian to government review if the value of our assets,
as calculated pursuant to the legislation, exceeds a threshold amount. A reviewable acquisition may not proceed unless the relevant minister is satisfied that the investment
is likely to result in a net benefit to Canada. Any of the foregoing could prevent or delay a change of control and may deprive or limit strategic opportunities for our
shareholders to sell their shares.

The exercise of all or any number of outstanding stock options, the award of any additional options, restricted stock units or other stock-based awards or any issuance
of shares to raise funds or acquire a business may dilute your Common Shares.

We have in the past and may in the future grant to some or all of our directors, officers and employees options to purchase our Common Shares and other stock-based
awards as non-cash incentives to those persons. The issuance of any equity securities could, and the issuance of any additional shares will, cause our existing shareholders
to experience dilution of their ownership interests.

Any additional issuance of shares or a decision to acquire other businesses through the sale of equity securities may dilute our investors’ interests, and investors may
suffer  dilution  in  their  net  book  value  per  share  depending  on  the  price  at  which  such  securities  are  sold.  Such  issuance  may  cause  a  reduction  in  the  proportionate
ownership and voting power of all other shareholders. The dilution may result in a decline in the price of our Common Shares or a change in control.

27

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We do not expect to pay dividends for the foreseeable future.

We have not paid any cash dividends to date and we do not intend to declare dividends for the foreseeable future, as we anticipate that we will reinvest future earnings, if
any,  in  the  development  and  growth  of  our  business.  Therefore,  investors  will  not  receive  any  funds  unless  they  sell  their  Common  Shares,  and  shareholders  may  be
unable  to  sell  their  shares  on  favorable  terms  or  at  all.  We  cannot  assure  you  of  a  positive  return  on  investment  or  that  you  will  not  lose  the  entire  amount  of  your
investment in our Common Shares. Prospective investors seeking or needing dividend income or liquidity should not purchase our Common Shares.

General Risks

It may be difficult for non-Canadian investors to obtain and enforce judgments against us because of our Canadian incorporation and presence.

We are a corporation existing under the laws of Canada. Some of our directors and officers, and many of the experts named in this Annual Report on Form 10-K, are
residents of Canada, and all or a substantial portion of their assets, and a substantial portion of our assets, are located outside the United States. Consequently, although we
have appointed an agent for service of process in the United States, it may be difficult for holders of our shares who reside in the United States to effect service within the
United States upon our directors and officers and experts who are not residents of the United States. It may also be difficult for holders of our shares who reside in the
United States to realize in the United States upon judgments of courts of the United States predicated upon our civil liability and the civil liability of our directors, officers
and experts under the United States federal securities laws. Investors should not assume that Canadian courts (i) would enforce judgments of United States courts obtained
in actions against us or our directors, officers or experts predicated upon the civil liability provisions of the United States federal securities laws or the securities or “blue
sky” laws of any state within the United States or (ii) would enforce, in original actions, liabilities against us or our directors, officers or experts predicated upon the
United  States  federal  securities  laws  or  any  such  state  securities  or  “blue  sky”  laws.  In  addition,  we  have  been  advised  by  our  Canadian  counsel  that  in  normal
circumstances, only civil judgments and not other rights arising from United States securities legislation are enforceable in Canada and that the protections afforded by
Canadian securities laws may not be available to investors in the United States.

We are likely a “passive foreign investment company” which may have adverse United States federal income tax consequences for United States shareholders.

United States investors in our Common Shares should be aware that we believe we are classified as a passive foreign investment company (“PFIC”) during the tax year
ended  December  31,  2021,  and  based  on  the  nature  of  our  business,  the  projected  composition  of  our  gross  income  and  the  projected  composition  and  estimated  fair
market value of our assets, we expect to be a PFIC for the year ending December 31, 2022, and may be a PFIC in subsequent tax years. If the Company is a PFIC for any
year during a United States shareholder’s holding period, then such United States shareholder generally will be required to treat any gain realized upon a disposition of
Common Shares, or any so-called “excess distribution” received on its Common Shares, as ordinary income, and to pay an interest charge on a portion of such gain or
distributions, unless the shareholder makes a timely and effective “qualified electing fund” election (“QEF election”) or a “mark-to-market” election with respect to the
Common Shares. A United States shareholder who makes a QEF election generally must report on a current basis its share of the Company’s net capital gain and ordinary
earnings for any year in which the Company is a PFIC, whether or not the Company distributes any amounts to its shareholders. However, United States shareholders
should  be  aware  that  we  do  not  intend  to  satisfy  record  keeping  requirements  that  apply  to  a  qualified  electing  fund,  and  we  do  not  intend  to  supply  United  States
shareholders with information that such United States shareholders require to report under the QEF election rules, in the event that we are a PFIC and a United States
shareholder  wishes  to  make  a  QEF  election.  Thus,  United  States  shareholders  should  assume  that  they  will  not  be  able  to  make  a  QEF  election  with  respect  to  their
Common Shares. A United States shareholder who makes the mark-to-market election generally must include as ordinary income each year the excess of the fair market
value of the Common Shares over the taxpayer’s basis therein. Each United States shareholder should consult its own tax advisor regarding the United States federal,
United States local, and foreign tax consequences of the PFIC rules and the acquisition, ownership, and disposition of our Common Shares.

Any failure to maintain an effective system of internal controls may result in material misstatements of our consolidated financial statements or cause us to fail to
meet our reporting obligations or fail to prevent fraud; and in that case, our shareholders could lose confidence in our financial reporting, which would harm our
business and could negatively impact the price of our Common Shares.

Section 404(a) of the Sarbanes-Oxley Act of 2002 requires that our management assess and report annually on the effectiveness of our internal control over financial
reporting and identify any material weaknesses in our internal control over financial reporting.

Effective internal controls are necessary for us to provide reliable financial reports and prevent fraud. If we fail to maintain an effective system of internal controls, we
might not be able to report our financial results accurately or prevent fraud; and in that case, our shareholders could lose confidence in our financial reporting, which
would harm our business and could negatively impact the price of our Common Shares. While we believe that we have sufficient personnel and review procedures to
allow us to maintain an effective system of internal controls, we cannot assure you that we will not experience potential material weaknesses in our internal control. Even
if  we  conclude  that  our  internal  control  over  financial  reporting  provides  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of
consolidated financial statements for external purposes in accordance with US GAAP, because of its inherent limitations, internal control over financial reporting may not
prevent or detect fraud or misstatements. Failure to implement required new or improved controls, or difficulties encountered in their implementation, could harm our
results of operations or cause us to fail to meet our future reporting obligations.

28

 
 
 
 
 
 
 
 
 
 
 
 
If we fail to timely achieve and maintain the adequacy of our internal control over financial reporting, we may not be able to produce reliable financial reports or help
prevent fraud. Our failure to achieve and maintain effective internal control over financial reporting could prevent us from complying with our reporting obligations on a
timely basis, which could result in the loss of investor confidence in the reliability of our consolidated financial statements, harm our business and negatively impact the
trading price of our Common Shares.

Prior to December 31, 2018, we were a foreign private issuer and were therefore not subject to certain United States securities law disclosure requirements that apply
to a domestic United States issuer, which may limit the historical information publicly available to our shareholders.

As  a  foreign  private  issuer  prior  to  December  31,  2018,  we  were  exempt  from  certain  rules  under  the  Exchange  Act  that  impose  disclosure  requirements  as  well  as
procedural requirements for proxy solicitations under Section 14 of the Exchange Act. In addition, our officers, directors and principal shareholders were exempt from the
reporting and “short-swing” profit recovery provisions of Section 16 of the Exchange Act. Moreover, we were not required to file periodic reports and financial statements
with the SEC as frequently or as promptly as a company that files as a domestic issuer whose securities are registered under the Exchange Act, nor were we generally
required  to  comply  with  the  SEC’s  Regulation  Fair  Disclosure,  which  restricts  the  selective  disclosure  of  material  non-public  information.  For  as  long  as  we  were  a
“foreign private issuer” or an eligible Canadian issuer under the Multijurisdictional Disclosure System, we filed our annual financial statements on Form 20-F, or on Form
40-F, respectively, and furnished our quarterly updates on Form 6-K to the SEC. However, the information we filed or furnished was not the same as the information
required in annual and quarterly reports on Form 10-K or Form 10-Q for United States domestic issuers. Accordingly, there may be less historical information publicly
available concerning us than there is for a company that has filed as a domestic issuer for longer.

Data security incidents and privacy breaches could result in important remediation costs, increased cyber security costs, litigation and reputational harm.

Cyber security incidents can result from deliberate attacks or unintentional events. Cyber-attacks and security breaches could include unauthorized attempts to access,
disable, improperly modify or degrade the Company’s information, systems and networks, the introduction of computer viruses and other malicious codes and fraudulent
“phishing” emails that seek to misappropriate data and information or install malware onto users’ computers. Cyber-attacks in particular vary in technique and sources,
are persistent, frequently change and are increasingly more targeted and difficult to detect and prevent against. Our network security and data recovery measures and those
of third parties with which we contract, may not be adequate to protect against cyber-attacks.

Disruptions due to cyber security incidents could adversely affect our business. In particular, a cyber security incident could result in the loss or corruption of data from
our  research  and  development  activities,  including  clinical  trials,  which  may  cause  significant  delays  to  some  or  all  of  our  clinical  programs.  Also,  our  trade  secrets,
including unpatented know how, technology and other proprietary information could be disclosed to competitors further to a breach, which would harm our business and
competitive position. We expect that risks and exposures related to cyber security attacks will remain high for the foreseeable future due to the rapidly evolving nature and
sophistication  of  these  threats.  While  we  have  invested  in  the  protection  of  data  and  information  technology,  there  can  be  no  assurance  that  our  efforts  to  implement
adequate security measures would be sufficient to protect us against cyber-attacks.

We must successfully upgrade and maintain our information technology systems.

We rely on various information technology systems to manage our operations. There are inherent costs and risks associated with maintaining, modifying and/or changing
these systems and implementing new systems, including potential disruption of our internal control structure, substantial capital expenditures, additional administration
and operating expenses, retention of sufficiently skilled personnel to implement and operate its systems, demands on management time and other risks and costs of delays
or difficulties in transitioning to new systems or of integrating new systems into our current systems. In addition, our information technology system implementations may
not result in productivity improvements at a level that outweighs the costs of implementation, or at all. The implementation of new information technology systems may
also cause disruptions in our business operations and have an adverse effect on our business, prospects, financial condition and operating results.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

29

 
 
 
 
 
 
 
 
 
 
 
 
ITEM 2. PROPERTIES

We lease approximately 7,309 square feet of office space and 2,168 square feet of lab space in San Diego, California for research and drug development. The lease for the
office space expires on March 31, 2023, and can be extended for an additional 5 year period. We lease approximately 2,078 square feet of office space in Toronto, Ontario,
Canada. The lease for this location expires on June 30, 2023, with an option to renew for another five-year period. We believe that our facilities are sufficient to meet our
needs and that suitable additional space will be available as and when needed.

ITEM 3. LEGAL PROCEEDINGS

We know of no material pending legal proceedings to which our company or subsidiaries is a party or of which any of our properties, or the properties of our subsidiaries,
is the subject. However, from time to time, we may be subject to various pending or threatened legal actions and proceedings, including those that arise in the ordinary
course of our business.  Such matters are subject to many uncertainties and to outcomes that are not predictable with assurance and that may not be known for extended
periods of time.

ITEM 4. MINE SAFETY DISCLOSURES

None.

PART II.

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY
SECURITIES

Our Common Shares are currently traded on The Nasdaq Capital Market under the symbol “APTO” and the Toronto Stock Exchange under the symbol “APS”.

As  of  March  22,  2022,  there  were  approximately  38  shareholders  of  record  of  our  Common  Shares,  which  included  Cede  &  Co.,  a  nominee  for  Depository  Trust
Company,  or  DTC,  and  CDS  &  Co.,  a  nominee  for  The  Canadian  Depository  for  Securities  Ltd.,  or  CDS.  Common  shares  that  are  held  by  financial  institutions  as
nominees for beneficial owners are deposited into participant accounts at either DTC or CDS, and are considered to be held of record by Cede & Co. or CDS & Co., each
as one shareholder.

We currently intend to retain all future earnings, if any, for the operation and expansion of our business and, therefore, do not anticipate declaring or paying cash dividends
on our Common Shares in the foreseeable future.

Repurchases of Equity Securities

There were no repurchases of equity securities during the fourth quarter of 2021.

ITEM 6. RESERVED

ITEM 7 - MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This discussion contains forward-looking statements that involve risks and uncertainties. When reviewing the discussion below, you should keep in mind the substantial
risks and uncertainties that impact our business. In particular, we encourage you to review the risks and uncertainties described in “Risk Factors” in Part I, Item 1A in
this Annual Report on Form 10-K. These risks and uncertainties could cause actual results to differ materially from those projected or implied by our forward-looking
statements contained in this report. These forward-looking statements are made as of the date of this management’s discussion and analysis, and we do not intend, and do
not assume any obligation, to update these forward-looking statements, except as required by law.

All amounts are expressed in United States dollars unless otherwise stated.

OVERVIEW

Aptose is a clinical stage precision oncology company advancing highly differentiated kinase inhibitors to treat unmet medical needs in life-threatening cancers. Based on
insights into the genetic profiles of certain cancers and patient populations, Aptose is building a pipeline of novel and targeted oncology therapies directed at dysregulated
processes and signaling pathways in cancer cells, and this strategy is intended to optimize efficacy through simultaneous targeting of key drivers of disease in cancer cells,
while preserving quality of life in patients by minimizing the side effects associated with conventional therapies. Our product pipeline includes cancer drug candidates that
exert potent activity as stand-alone agents and that enhance the activities of other anticancer agents without causing overlapping toxicities. Indeed, we believe our targeted
products  can  emerge  as  first-in-class  or  best-in-class  agents  that  deliver  single  agent  benefit  and  may  serve  as  part  of  a  combination  therapeutic  strategy  for  specific
populations of cancer patients. We currently have two candidates in clinical development: HM43239 and luxeptinib (CG-806), both being evaluated for safety, tolerability,
pharmacokinetics and signals of efficacy in Phase 1 clinical trials. Each molecule is described below.

30

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
HM43239  is  an  orally  administered,  highly  potent  myeloid  kinome  inhibitor  that  selectively  targets  a  constellation  of  kinases  operative  in  myeloid  malignancies  and
known  to  be  involved  in  tumor  proliferation,  resistance  to  therapy,  and  differentiation.  This  small  molecule  anticancer  agent  is  currently  being  evaluated  in  an
international Phase 1/2 clinical trial in patients with relapsed or refractory AML, including the emerging populations resistant to FLT3 inhibitors.

Luxeptinib  (CG-806)  is  an  orally  administered,  highly  potent  dual  lymphoid  and  myeloid  kinome  inhibitor  that  selectively  targets  defined  clusters  of  kinases  that  are
operative in hematologic malignancies. This mutationally agnostic small molecule anticancer agent is currently being evaluated in a Phase 1a/b study for the treatment of
patients having B-cell malignancies including classic CLL, SLL and certain NHL that are resistant/refractory/intolerant to other therapies, and in a Phase 1a/b study for
the treatment of patients with R/R AML and HR MDS.

Impact of COVID 19 on our Research Programs:

We are advancing first-in-class targeted agents to treat life-threatening cancers that, in most cases, are not elective for patients and require immediate treatment. However,
COVID-19 has caused global economic and social disruptions that could adversely affect our ongoing or planned research and development and clinical trial activities
including enrollment of patients in our ongoing clinical trials, collection and analysis of patient data and eventually, the reporting of top-line results from our trials.

Our team proactively addressed these new challenges swiftly and appropriately, implementing safeguards and procedures to ensure both the safety of our employees and
stakeholders, and accommodate the potential challenges due to COVID-19. Aptose was early in directing its employees to work-from-home and provided the tools to
minimize productivity disruptions. Our clinical operations team reached out to active and future clinical sites to determine their needs and challenges and assist where
possible, including virtual monitoring of patients, which reduces patients’ visits. We also have contacted our drug manufacturers to identify any potential supply chain
disruptions and are adjusting accordingly. Since the early part of the COVID-19 pandemic in the first quarter of 2020, we began to carefully monitor the potential impact
of  COVID-19,  and  on  a  regular  basis,  we  communicated  with  investigators  at  our  clinical  sites  to  gain  an  evolving  understanding  of  competing  COVID-19  related
activities and clinical trial related activities. While it is difficult to estimate the duration and impact of COVID-19 on clinical sites, as of the date of this report, we have
not experienced and do not foresee material delays to the enrollment of patients or timelines for the HM43239 and luxeptinib clinical trials.

PROGRAM UPDATES

HM43239

Indication and Clinical Trials:

HM43239  is  an  oral,  highly  potent,  genotype-agnostic  small  molecule  inhibitor  of  kinases  operative  in  myeloid  malignancies  and  known  to  be  involved  in  tumor
proliferation, resistance to therapy and differentiation. Preclinical in vitro and in vivo studies suggest that HM43239 may be an effective monotherapy and combination
therapy in patients with hematologic malignancies including AML. An international Phase 1/2 clinical trial in patients with relapsed or refractory AML is ongoing. The
dose escalation portion of this study to date has observed evidence of robust clinical activity, including multiple complete responses in R/R AML patients with various
disease genotypes, and no toxicity trends that should prevent further dose escalation.

The FDA has granted orphan drug designation to HM43239 for the treatment of patients with AML in October 2018. Orphan drug designation is granted by the FDA to
encourage  companies  to  develop  therapies  for  the  treatment  of  diseases  that  affect  fewer  than  200,000  individuals  in  the  United  States.  Orphan  drug  status  provides
research and development tax credits, an opportunity to obtain grant funding, exemption from FDA application fees and other benefits. The orphan drug designation also
provides us with seven additional years of marketing exclusivity in this indication.

Manufacturing:

Following  the  HM43239  licensing  agreement  between  Aptose  and  Hanmi  on  November  4,  2021,  Aptose  received  from  Hanmi  an  existing  inventory  of  drug  product
expected  to  support  continuation  of  the  current  Phase  1/2  study.  The  Company  and  Hanmi  have  also  entered  into  a  separate  supply  agreement  in  2022  for  additional
production of new drug substance (API) and drug product to support further clinical development.

31

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Program Updates at Recent Scientific Forums:

At the 63rd American Society of Hematology (ASH) Annual Meeting on December 11, 2021, we presented new clinical data from HM43239 in patients with relapsed or
refractory AML at an oral presentation titled “First in Human FLT3 and SYK Inhibitor HM43239 Shows Single Agent Activity in Patients with Relapsed or Refractory
FLT3 Mutated and Wild-Type Acute Myeloid Leukemia (AML)”. In the ongoing international Phase 1/2 study, thirty-four relapsed/refractory patients who had received at
least one prior line of therapy were enrolled at multiple centers between March 2019 and August 2021, and treated at doses escalating from 20 mg to 160 mg. HM43239
delivered multiple complete responses (CR) and demonstrated clinically meaningful benefit in all responders, by either bridging successfully to hematopoietic stem cell
transplant (HSCT) or leading to a durable response, as well as a favorable safety profile across all treated patients. Among FLT3 mutant patients treated with 80 mg, 3 of 8
(37.5%) achieved a durable composite CR (CRc, CR + CRi). At the 80 mg dose, a composite CRc rate of 25% was observed in both FLT3 mutant (including a prior
gilteritinib failure patient) and FLT3 wild-type AML (including >1 year duration of response in a relapsed TP53m AML patient unfit for HSCT). At the 80 mg dose, 4 of
5 (80%) responders advanced to HSCT. At the 120 mg dose, a prior gilteritinib failure patient achieved PR after one cycle. HM43239 showed a favorable safety profile
with only mild AEs and no DLTs up to 160 mg per day, and no drug discontinuations from drug related toxicity. HM43239 plasma inhibitory assay (PIA) activity was
dose-dependent with up to 90% phospho-FLT3 inhibition at dose levels ≥ 80 mg.

Luxeptinib (CG-806)

Indication and Clinical Trials:

Luxeptinib  is  being  developed  with  the  intent  to  deliver  the  agent  as  an  oral  therapeutic  for  the  treatment  of  R/R  AML  and  for  the  treatment  of  a  spectrum  of  B  cell
malignancies (including but not limited to CLL, SLL and NHL).

On March 25, 2019, we announced that the FDA granted Aptose IND allowance to initiate its Phase 1a/b clinical trial for luxeptinib. The clinical trial is a multicenter,
open  label,  dose-escalation  study  with  additional  optional  expansion  cohorts  to  assess  the  safety,  tolerability,  pharmacokinetics  and  pharmacodynamic  effects,  and
preliminary efficacy of luxeptinib in patients with CLL, SLL or NHL. In this study, luxeptinib is administered in gelatin capsules twice daily (BID) during a 28-day cycle.

As of the date of this report, we have initiated multiple clinical sites for the Phase 1a/b trial in patients with CLL/SLL or NHL which include specialty regional cancer
care centers as well as large hospitals and key academic institutions. As of the date of this report, we have completed the first, second, third, fourth and fifth dose levels
(150 mg, 300 mg, 450 mg, 600 mg, and 750 mg BID, respectively). Under an FDA-approved accelerated titration protocol, only one patient was required at each of the
first two dose levels, followed by three patients at each dose level thereafter. Intra-patient dose escalation is allowed if the higher dose is safe in three or more patients, and
additional patients may be enrolled at dose levels previously declared safe. To date, we have reported that among enrolled patients with an array of B-cell malignancies,
we have observed inhibition of phospho-BTK and “on-target” lymphocytosis in patients with classic CLL and modest tumor reductions in patients with different tumor
types, indicating target engagement and pharmacologic activity of luxeptinib.

We are also advancing luxeptinib into myeloid malignancies, with an initial focus on AML and MDS, in a separate Phase 1a/b trial. Our strategy was to identify a starting
dose of luxeptinib that we believe could be therapeutically active in critically ill patients with R/R AML. In our ongoing Phase 1a/b study in patients with CLL and other
B-cell malignancies, 450 mg BID luxeptinib delivered plasma levels potently inhibited phospho-FLT3 in a plasma inhibitory activity (PIA) reporter cell assay, suggesting
that the 450 mg BID dose may be active in patients with AML. On June 29, 2020, we announced that we had received allowance from the FDA to proceed with a study in
R/R AML with a starting dose of 450 mg BID, and subsequently on October 19, 2020, we announced that we had initiated dosing of the first patient with AML. As of the
date of this report we have initiated multiple clinical sites for the Phase 1a/b trial, and we have completed the first, second, and third dose levels (450 mg, 600 mg, and
750 mg BID, respectively).. To date, we have reported that among enrolled patients, we have observed blast reductions in patients carrying the FLT3-ITD mutation, and a
durable MRD-negative CR in a patient carrying the FLT3-ITD mutation.

In parallel with the ongoing dose escalation of the current formulation of luxeptinib in patients with B-cell malignancies and AML, Aptose has made significant progress
in the development of a “next generation” formulation that could reduce total API administered, reduce pill burden, improve absorption, and increase exposure. Aptose
began testing this new formulation of luxeptinib in the ongoing studies in patients with hematologic malignancies in the first half of fiscal 2022.

Manufacturing:

During fiscal years 2017 and 2018, we created a scalable chemical synthetic route for the manufacture of luxeptinib drug substance and have scaled the manufacture of
API to multi-kg levels, we completed the manufacture of a multi-kg batch of API under GMP conditions as our API supply for our first-in-human clinical trials, and we
manufactured under GMP conditions two dosage strengths of capsules to serve as our clinical supply in those human studies. During fiscal 2019 and 2020, we completed
successful manufacture of multiple batches of API and drug product, and planned numerous GMP production campaigns to supply the ongoing trial and planned trials into
the  future.  To  date  we  have  been  able  to  manufacture  API  and  capsules  to  support  clinical  supplies  under  GMP  conditions.  In  fiscal  2021  we  are  continued  our
manufacturing campaigns and scale-up and tech transfer activities to support additional manufacturing capacity for the ongoing and planned clinical trials of luxeptinib.
Additional research and development funds were utilized to support the development of a “next generation” formulation of luxeptinib.

32

 
 
 
 
 
 
 
 
 
 
 
 
 
Program Updates at Recent Scientific Forums:

We have completed several non-clinical studies that demonstrate the highly differentiated profile of luxeptinib. Key studies that have been presented at scientific forums
are as follows:

●

●

●

●

●

On April 15, 2018, at the 2018 Annual Meeting of the American Association for Cancer Research (“AACR”), we presented with the OHSU Knight Cancer
Institute preclinical data demonstrating that luxeptinib, a pan-FLT3/pan-BTK inhibitor, demonstrates broader activity and superior potency to other FLT3 and
BTK inhibitors against primary bone marrow samples from patients with hematologic malignancies. We also presented preclinical data demonstrating that
luxeptinib targets multiple pathways to kill diverse subtypes of AML and B-cell malignancies in vitro.

On June 15, 2018, at the 23rd Congress of the European Hematology Association (“EHA”), we presented, during a poster presentation, preclinical data
demonstrating a unique binding mode of luxeptinib to wild type and C481S mutant BTK. Further, we presented that luxeptinib suppresses the B-cell receptor
(“BCR”), AKT/PI3K, ERK and NFkB signaling pathways and exerts broader and far greater potency of direct cancer cell killing that ibrutinib against
malignant bone marrow cells from patients with CLL, ALL and a host of other hematologic malignancies.

On December 3, 2018, we announced two separate poster presentations at the American Society of Hematology (“ASH”) Annual Meeting. The OHSU Knight
Cancer Institute and Aptose presented data in one poster and the team at The University of MD Anderson Cancer Center (“MDACC”) presented data in a
separate poster. These presentations highlighted several key findings. First, in collaboration with the MDACC, orally administered luxeptinib demonstrated
efficacy in a patient derived xenograft (“PDX”) model study in which the bone marrow cells from a patient with AML having dual ITD and D835 mutations in
FLT3 were implanted into a mouse. The dual FLT3 mutant form of AML represents a very difficult-to-treat population that has shown resistance to other FLT3
inhibitors, and data from the PDX model suggest that luxeptinib may be useful in treating such patients. Secondly, Aptose presented high level data from
preclinical GLP toxicology studies that demonstrate orally administered luxeptinib is a well-tolerated targeted molecule. Finally, in collaboration with the
OHSU Knight Cancer Center, studies of luxeptinib on 124 samples of freshly isolated bone marrow from CLL patients demonstrated both broader and greater
cell killing potency for luxeptinib than Ibrutinib.

On April 1, 2019, at the 2019 Annual Meeting of the AACR, Aptose, along with our collaborators at OHSU Knight Cancer Institute, presented data
highlighting luxeptinib was more potent in killing AML patient-derived samples than other FLT3 inhibitors including midostaurin, sorafenib, sunitinib,
dovitinib, quizartinib, crenolanib and gilteritinib. Luxeptinib was equally potent against cells from patients in the adverse, intermediate and favorable risk
groups (2017 ELN risk stratification), and cells from patients with relapsed or transformed AML (World Health Organization classification) were as sensitive
as those from patients with de novo AML. The data demonstrated potency on primary AML patient samples across all AML subgroups including
relapsed/refractory/transformed AML and those with genetic abnormalities related to poor prognosis. While patient samples with FLT3-ITD mutations were
expected to have greater sensitivity to luxeptinib, the most surprising correlation was the sensitivity of patient samples with IDH1 R132 mutations. The
enhanced sensitivity of IDH-1 mutant AML to luxeptinib warrants investigation in the clinical setting. Moreover, in studies of luxeptinib on AML patient bone
marrow samples, we demonstrated that mutations in p53, ASXL1 and NPM1 do not hinder the potency of luxeptinib.

On June 14, 2019, we presented new preclinical data for luxeptinib in a poster presentation at the 24th Congress of the EHA in Amsterdam, the Netherlands.
The poster, CG-806, preclinical in vivo efficacy and safety profile as a pan-FLT3 / pan-BTK inhibitor, highlights the in vivo anti-leukemic efficacy of
luxeptinib and its GLP toxicology and toxicokinetic profile. In a preclinical MV4-11 FLT3-ITD AML xenograft mouse model, luxeptinib suppressed leukemia
growth at all doses tested throughout the 28-day period of dosing. In the mice treated with 100 mg/kg, 5 of 11 (45%) were cured through day 120, and in the
300 mg/kg group, 10 of 11 (91%) of the mice were cured. Retreating the “uncured’ mice in these two dose groups for an additional 28 days beginning on day
88 led to rapid and robust antitumor response in all retreated mice through day 120. In the “re-treated” mice, no drug resistance and no toxicities were
observed. GLP 28-day toxicology and TK studies mice and dogs showed no adverse luxeptinib-related effects on body weight, ophthalmic, respiratory or
neurological examinations, clinical pathology (coagulation, clinical chemistry, or urinalysis), organ weight or macroscopic evaluations. No luxeptinib-related
cardiovascular effects were noted in the 28-day GLP toxicology study or in a separate preclinical cardiovascular safety study.

33

 
 
 
 
 
 
 
 
 
 
 
 
 
 
●

●

●

●

●

On October 24, 2019, we presented preclinical data in a poster presentation at the 5th International Conference on Acute Myeloid Leukemia “Molecular and
Translational” Advances in Biology and Treatment in Estoril, Portugal. The poster, CG-806 Pan-FLT3/Pan-BTK Inhibitor Simultaneously Suppresses Multiple
Oncogenic Signaling Pathways to Treat AML, highlighted that luxeptinib acts on large xenograft tumors with no evidence of drug resistance and with no
observed toxicity, enhances killing of patient-derived AML and B-cell cancer cells when combined with venetoclax, and retains activity in patient-derived
AML cells even when cells harbor mutations of FLT3, IDH-1, NPM1, ASXL1 or p53.

On December 8 and 9, 2019, we presented new preclinical data in two separate poster presentations at the 61st ASH Annual Meeting. On December 8, 2019,
the poster CG-806, a First-in-Class Pan-FLT3/Pan-BTK Inhibitor, Exhibits Broad Signaling Inhibition in Chronic Lymphocytic Leukemia Cells compared
luxeptinib and ibrutinib, the standard of care, on primary patient cells of CLL highlighting that CG-806 broadly inhibits BCR signaling in CLL cells, resulting
in CLL cell apoptosis and reduced proliferation, luxeptinib is more potent than ibrutinib in inducing apoptosis of MEC1 CLL cells and, finally, luxeptinib
targets elements of the CLL microenvironment, and thereby potentially targets pro-survival signals from the microenvironment. The poster presented on
December 9, 2019 titled Synergistic Targeting of BTK and E-Selectin/CXCR4 in the Microenvironment of Mantle Cell Lymphomas, explored the effects of
luxeptinib on cells of MCL, a rare subtype of aggressive B cell non Hodgkin lymphoma that is incurable with standard therapy, and investigated the molecular
mechanisms of acquired resistance to treatment, highlighted that luxeptinib demonstrated superior anti-lymphoma effects compared with ibrutinib, exerting
potent cell growth inhibitory effects on ibrutinib-resistant MCL cells, luxeptinib suppresses phospho-BTK, -Stat3, -AKT, -ERK, -Src, NF-kB, and the anti-
apoptotic protein Mcl1, while upregulating p53, luxeptinib increased autophagy in MCL cells, which may be associated with resistance to luxeptinib-mediated
apoptosis. Inhibition of autophagy re-sensitizes MCL cells to luxeptinib-induced apoptosis, luxeptinib treatment upregulates CXCR4/E-selectin levels in MCL
cells and finally, combination of CXCR4/E-selectin antagonists with luxeptinib enhances luxeptinib-induced apoptotic killing of MCL cells in the presence of
the tumor microenvironment. On December 7, 2019, Aptose also hosted a corporate event and clinical update, where the company’s management and invited
Key Opinion Leaders highlighted some early clinical observations on safety, tolerability, pharmacokinetics, and activity, including. The discussion focused on
key findings from dose levels one and two of luxeptinib in heavily pretreated R/R CLL patients, including: the clean safety profile to date, with no
myelosuppression, drug-related adverse events or dose-limiting toxicity observed; meaningful oral absorption and predictable pharmacokinetic (“PK”) profile;
evidence of target engagement manifesting as inhibition of Phospho-BTK, Phospho-SYK and Phospho-ERK in a plasma inhibitory assay (“PIA”) using plasma
from the CLL patient on dose level two, and early evidence of clinical activity in the same patient manifesting as increase in peripheral blood lymphocytes
(lymphocytosis), typically associated with BTK inhibition.

On April 27, 2020, we presented the early clinical data on luxeptinib at the AACR Virtual Annual Meeting I in lieu of the live oral presentation originally
planned. A video summary of Abstract # 9967 - Early clinical findings from a Phase 1a/b dose escalation trial to evaluate the safety and tolerability of CG-806
in patients with relapsed or refractory CLL/SLL or non-Hodgkin’s lymphomas described the first-in-human tests of luxeptinib which are being carried out in a
Phase 1a/b clinical study in patients with significant unmet needs including patients with relapsed or refractory CLL, SLL or NHL who had been failed by or
been intolerant to two lines of established therapy. We noted that the second patient, treated at the 300 mg BID dose level, represented a classic CLL patient
that developed a brisk lymphocytosis (evidence of BTK target engagement and evidence of pharmacologic activity), and that enrollment was continuing.

On June 12, 2020, we presented new clinical data on luxeptinib in a poster presentation at the 25th Congress of the EHA. The poster, Early Clinical Findings
from a Phase 1 a/b Dose Escalation Trial to Evaluate the Safety and Tolerability of CG-806 in Patients with Relapsed or Refractory CLL/SLL or Non-
Hodgkin’s Lymphomas (EHA2020 Abstract# EP711), reviewed luxeptinib data for eight patients (as of the data cut-off date on May 5, 2020) with relapsed or
refractory CLL, SLL or NHL in the first in-human Phase 1a/b, open-label, single arm, multicenter dose-escalation clinical study. Data from the ongoing trial
demonstrated that luxeptinib was well-tolerated in patients treated at 150 mg, 300 mg, 450 mg BID over multiple cycles, with no dose-limiting toxicities or
serious adverse events observed, supporting continued dose escalation. Luxeptinib treatment achieved human steady state PK levels known to be effective in
murine tumor models and led to complete inhibition of phospho-BTK and multiple CLL survival pathways. Luxeptinib treatment also led to lymphocytosis in
both classic CLL patients entering study with elevated lymphocyte counts and led to complete inhibition of phospho-FLT3, suggesting that dose levels
evaluated in this study may be therapeutic in patients with AML.

On June 22, 2020, we presented new preclinical data on luxeptinib in a poster presentation at the AACR Virtual Annual II 2020. The poster, CG-806, a First-
in-Class FLT3/BTK Inhibitor, and Venetoclax Synergize to Inhibit Cell Proliferation and to Induce Apoptosis and Aggressive B-cell Lymphomas, illustrated
how luxeptinib simultaneously inhibits the driver BCR pathway and PI3K/AKT, NFᴋB and MAPK-mediated rescue pathways to kill aggressive double-hit and
double-expressor B-cell lymphoma cells. Overall, the presented work provided additional mechanistic evidence to support the clinical development of CG-806
as a single agent or in combination with venetoclax in patients with aggressive B-cell lymphomas harboring unfavorable BCL2/MYC/BCL6 translocations and
/ or overexpression.

34

 
 
 
 
 
 
 
 
 
 
 
 
●

●

●

On December 6, 2020, we presented new clinical data in a virtual poster presentation at the 62nd ASH Annual Meeting. The poster, A Phase 1 a/b Dose
Escalation Study of the Mutation Agnostic BTK/FLT3 Inhibitor CG-806 in Patients with Relapsed or Refractory CLL/SLL or Non-Hodgkin’s
Lymphomas reviewed luxeptinib data for fourteen patients (as of the cutoff date of November 2, 2020) with relapsed or refractory CLL, SLL or NHL in the first
in-human Phase 1a/b, open-label, single arm, multicenter dose-escalation clinical study. Data from the ongoing trial demonstrated that luxeptinib was generally
well-tolerated in patients treated at 150 mg, 300 mg, 450 mg, and 600 mg BID over multiple cycles, supporting continued dose escalation. At the ongoing 750
mg dose, luxeptinib achieved steady state plasma concentration greater than 2 micromolar at the of Cycle 1. Luxeptinib treatment also led to modest reductions
in patients with different B-cell malignancies. On December 6, 2020, Aptose also hosted a corporate event and clinical update, where the company’s
management highlighted some early clinical observations on safety, tolerability, pharmacokinetics and activity from the Phase 1a/b study in B-cell
malignancies as well as from the recently initiated Phase 1a/b study in AML.On June 11, 2021, we presented clinical data on luxeptinib in a poster
presentations at the EHA June 2021  Congress. With luxeptinib in heavily pretreated B-cell cancer patients we presented that many of the patients rapidly
progressed immediately before luxeptinib treatment was initiated, resulting in a trend of tumor growth early in treatment, often followed by tumor reductions.
We observed dose-dependent anti-leukemic activity to luxeptinib in patients who received dose escalation, including one follicular lymphoma patient who
experienced tumor growth while on 450mg BID and upon dose escalation to 600mg BID the patient experienced 43% tumor reduction from peak (12% from
baseline). In that patient, luxeptinib was well-tolerated with single agent activity for the duration of 16+ cycles of therapy. In addition, one CLL patient and one
WM patient reported >25% tumor volume reduction.

Also, on June 11, 2021, during a virtual corporate update event we provided updated clinical findings with luxeptinib for the treatment of patients with relapsed
or refractory AML. We presented dose-dependent inhibition of phospho-FLT3, -BTK, -SYK, and -PDGFRα signaling and that all three R/R-AML patients with
FLT3-ITD mutations who received 450mg BID luxeptinib (the lowest dose) for 28 days experienced blast reductions. Two patients experienced blast reduction
of 67-90% but later experienced disease progression. However, one patient who failed chemotherapy twice, failed prior FLT3 inhibitor therapy, failed
venetoclax and decitabine treatment and failed AHSC transplants twice, achieved a MRD-negative CR with monotherapy of 450mg BID luxeptinib.

On December 11, 2021, we presented clinical updates from luxeptinib in patients with relapsed or refractory B-cell malignancies and relapsed or refractory
AML in two virtual poster presentation at the 63rd ASH Annual Meeting (A Phase 1 a/b Dose Escalation Study of the Mutation Agnostic BTK/FLT3 Inhibitor
Luxeptinib (CG-806) in Patients with Relapsed or Refractory B-Cell Malignancies; A Phase 1 a/b Dose Escalation Study of the Mutation Agnostic FLT3/BTK
Inhibitor Luxeptinib (CG-806) in Patients with Relapsed or Refractory Acute Myeloid Leukemia). The presentations highlighted that in both of these Phase 1/2
studies luxeptinib has been generally well tolerated at dose levels of 450, 600 and 750 mg BID over multiple cycles, and is currently being dosed in 900 mg
BID cohorts in parallel. Target engagement of BTK and FLT3, and anti-tumor activity, including dose- and exposure-dependent tumor reductions, have been
observed in multiple patients collectively between the studies, including in patients with FL, DLBCL, CLL/SLL, and AML.

LIQUIDITY AND CAPITAL RESOURCES

We are an early stage development company and we currently do not earn any revenues from our drug candidates. The continuation of our research and development
activities  and  the  commercialization  of  the  targeted  therapeutic  products  are  dependent  upon  our  ability  to  successfully  finance  and  complete  our  research  and
development  programs  through  a  combination  of  equity  financing  and  payments  from  strategic  partners.  We  have  no  current  sources  of  significant  payments  from
strategic partners.

Sources of liquidity:

The following table presents our cash and cash equivalents, investments and working capital as at December 31, 2021 and 2020.

(in thousands)
Cash and cash equivalents
Investments
Total

Working capital

Balances at

December 31, 2021    

Balances at
December 31, 2020  
117,393 
5,000 
122,393 

39,114    $
40,014     
79,128    $

  $

  $

73,563     

118,264 

Working capital is a non gaap measure and represents primarily cash, cash equivalents, investments, prepaid expenses and other current assets less current liabilities.

35

 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
   
 
     
       
 
   
 
 
We believe that our cash, cash equivalents and investments on hand at December 31, 2021 will be sufficient to finance our operations for at least 12 months from the
issuance date of these financial statements. Our cash needs for the next twelve months include estimates of the number of patients and rate of enrollment of our clinical
trials, the amount of drug product that we will require to support our clinical trials, and our general corporate overhead costs to support our operations, and our reliance on
our  manufacturers.  We  have  based  these  estimates  on  assumptions  and  plans  which  may  change  and  which  could  impact  the  magnitude  and/or  timing  of  operating
expenses and our cash runway.

We expect that we will need to raise additional capital or incur indebtedness to continue to fund our operations in the future. In December 2019, we filed a short form base
shelf  prospectus  (the  “Base  Shelf”)  that  allows  us  to  distribute,  upon  the  filing  of  prospectus  supplements,  up  to  $200,000,000  of  Common  Shares,  warrants,  or  units
comprising  any  combination  of  Common  Shares  and  warrants.  The  Base  Shelf  was  declared  effective  by  the  SEC  on  January  9,  2020  and  expires  on  January  9,
2023.Since our inception, we have financed our operations and technology acquisitions primarily from equity financing, proceeds from the exercise of warrants and stock
options, and interest income on funds held for future investment.

On  May  5,  2020,  the  Company  entered  an  “at-the-market”  equity  distribution  agreement  with  Piper  Sandler  &  Co.  (“Piper  Sandler”)  and  Canaccord  Genuity  LLC
(“Canaccord Genuity”) acting as co-agents (the “2020 ATM Facility”). Under the terms of the 2020 ATM Facility, the Company may, from time to time, sell Common
Shares  having  an  aggregate  offering  value  of  up  to  $75  million  through  Piper  Sandler  and  Canaccord  Genuity  on  the  Nasdaq  Capital  Market.  During  the  year  ended
December 31, 2021, the Company issued 15,315 shares under the 2020 ATM Facility at an average price of $2.446 for gross proceeds of $37 thousand ($36 thousand net
of share issue costs). Costs associated with the proceeds consisted of a 3% cash commission.

On July 20, 2020 and August 10, 2020, the Company completed a confidentially marketed public offering (“CMPO”), with Piper Sandler as the representative of the
underwriters, through the issuance of, in the aggregate, 11,854,472 Common Shares for gross proceeds of $62.2 million (approximately $58.2 million net of share issue
costs).

During the year ended December 31, 2019, the Company completed two CMPOs, with RBC Capital Markets, LLC (“RBC Capital Markets”) and Canaccord Genuity, as
representatives of the underwriters, and Piper Jaffray & Co (now Piper Sandler) as the representative of the underwriters, respectively, through the issuance of, in the
aggregate, 30,043,750 Common Shares for aggregate gross proceeds of $95.45 million (approximately $88.18 million net of share issue costs). The Company also raised
capital pursuant to two separate share purchase agreements with Aspire Capital Fund, LLC (“Aspire Capital”) through the issuance of an aggregate of 7,302,433 Common
Shares for aggregate gross proceeds of $14.4 million.

Our ability to raise additional funds could be affected by adverse market conditions, the status of our product pipeline, possible delays in enrollment in our trial related to
COVID-19, and various other factors and we may be unable to raise capital when needed, or on terms favorable to us. If the necessary funds are not available, we may
need to delay, reduce the scope of, or eliminate some of our development programs, potentially delaying the time to market for any of our product candidates.

Cash flows:

The following table presents a summary of our cash flows for the years ended December 31, 2021 and 2020:

(in thousands)

Net cash provided by (used in):

Operating activities
Investing activities
Financing activities
Effect of exchange rates changes on cash and cash equivalents

Net (decrease)/increase in cash and cash equivalents

Cash used in operating activities:

For the Years Ended,

  December 31,2021

    December 31, 2020  

  $

  $

(43,304)   $
(35,208)    
226     
7     
(78,279)   $

(33,891)
12,628 
58,807 
7 
37,551 

Our cash used from operating activities for the years ended December 31, 2021 and 2020 was approximately $43.3 million and $33.9 million, respectively. Our uses of
cash for operating activities for both years consisted primarily of salaries and wages for our employees, facility and facility-related costs for our offices and laboratories,
fees  paid  in  connection  with  preclinical  and  clinical  studies,  drug  manufacturing  costs,  laboratory  supplies  and  materials,  and  professional  fees.  In  the  year  ended
December 31, 2021, our use of cash from operating activities also included $5.0 million in license fees to Hanmi for global development rights of compound HM43239.
Net cash used in operating activities was higher in the year ended December 31, 2021 as compared with the year ended December 31, 2020 resulting mostly from a higher
net loss in the current year. See “Results of Operations”.

36

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
       
 
     
       
 
   
   
   
 
 
 
We do not expect to generate positive cash flow from operations for the foreseeable future due to additional research and development costs, including costs related to
drug discovery, preclinical testing, clinical trials, and manufacturing, as well as operating expenses associated with supporting these activities, and potential milestone
payment to our collaborators. It is expected that negative cash flow will continue until such time, if ever, that we receive regulatory approval to commercialize any of our
products under development and/or royalty or milestone revenue from any such products exceeds expenses.

Cash flow from investing activities:

Our cash used by investing activities for the year ended December 31, 2021 was $35.2 million, and consisted of net purchases of investments of approximately $35.0
million and purchases of property and equipment of approximately $212 thousand.

Our cash provided by investing activities for the year ended December 31, 2020 was $12.6 million, and consisted of maturities of investments of approximately $12.7
million and purchases of property and equipment of approximately $79 thousand.

The composition and mix of cash, cash equivalents and investments is based on our evaluation of conditions in financial markets and our near-term liquidity needs. We
have exposure to credit risk, liquidity risk and market risk related to our investments. The Company manages credit risk associated with its cash and cash equivalents and
investments by maintaining minimum standards of R1‑low or A‑low investments. The Company invests only in highly rated corporations and treasury bills which are
capable of prompt liquidation. The Company manages its liquidity risk by continuously monitoring forecasts and actual cash flows. The Company is subject to interest
rate risk on its cash and cash equivalents and investments. The Company does not believe that the results of operations or cash flows would be affected to any significant
degree by a sudden change in market interest rates relative to interest rates on the investments, owing to the relative short‑term nature of the investments.

Cash flow from financing activities:

Our cash flow from financing activities for the year ended December 31, 2021 was approximately $226 thousand, and consisted mostly of proceeds from the exercise of
stock options of $190 thousand and proceeds from shares issued from the 2020 ATM Facility of approximately $36 thousand as described above. Our cash flow from
financing activities for the year ended December 31, 2020 was approximately $58.8 million, consisted mostly of the CMPO we completed in July and August 2020 as
described above and of proceeds from the exercise of stock options of $573 thousand.

At-The-Market Facilities

On May 5, 2020, the Company entered into an equity distribution agreement with Piper Sandler and Canaccord Genuity acting as co-agents in connection with the 2020
ATM Facility. Under the terms of the 2020 ATM Facility, the Company may, from time to time, sell Common Shares having an aggregate offering value of up to $75
million through Piper Sandler and Canaccord Genuity on the Nasdaq Capital Market. During the year ended December 31, 2021, the Company issued 15,315 shares under
the 2020 ATM Facility at an average price of $2.446 for gross proceeds of approximately $37 thousand ($36 thousand net of share issue costs). Costs associated with the
proceeds consisted of a 3% cash commission.

Contractual Obligations and Off-Balance Sheet Financing

As at December 31, 2021, we have not entered into any off-balance sheet arrangements.

The Company enters into research, development and license agreements in the ordinary course of business where the Company receives research services and rights to
proprietary technologies. Milestone and royalty payments that may become due under various agreements are dependent on, among other factors, clinical trials, regulatory
approvals and ultimately the successful development of a new drug, the outcome and timing of which is uncertain.

On November 4, 2021, the Company entered into an exclusive license agreement with Hanmi for global rights to its compound named HM43239. Under the Company’s
license  agreement  with  Hanmi,  the  Company  has  maximum  obligations  for  clinical  development  and  global  regulatory  milestones  totaling  $64.5  million  for  the  first
potential clinical indication of HM43239, $34 million for the second indication, and $29 million for the third Indication. The Company has maximum obligations for
tiered global sales based milestones totaling $280 million. The Company also has an obligation for tiered royalty payments on global sales of commercialized product.
The timing of any milestone or royalty payments that may become due is not yet determinable.

Under the license agreement with CG with regards to the Rights (other than the China Rights), the Company has obligations for development milestones of $16 million
related to the initiation of Phase 2 and pivotal clinical trials, and regulatory milestones totaling $44 million. The Company also has an obligation to pay royalty payments
on sales of commercialized product. The timing of any milestone or royalty payments that may become due is not yet determinable.

37

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Under the license agreement with CG with regards to the China Rights, we entered into a license agreement with CG to gain an exclusive license to CG-806 in China
(including the People’s Republic of China, Hong Kong and Macau). The Company has future obligations of development milestones of $6 million related to approval of
an  IND  and  to  the  initiation  of  Phase  2  and  pivotal  clinical  trials,  and  regulatory  milestones  totaling  $20  million.  The  Company  also  has  an  obligation  to  pay  sales
milestones and royalty payments on sales of commercialized product. The timing of any milestone or royalty payments that may become due is not yet determinable.

RESULTS OF OPERATIONS

A summary of the results of operations for the years ended December 31, 2021 and 2020 is presented below:

(in thousands except per Common Share data)

Revenues
Research and development expenses
General and administrative expenses
Net finance income
Net loss
Unrealized gain/(loss) on securities available-for-sale
Total comprehensive loss
Basic and diluted loss per Common Share

Year ended December 31,

2021

2020

  $

  $

  $
  $

—    $
45,985     
19,462     
93     
(65,354)   $
-     
(65,354)   $
(0.73)   $

— 
29,288 
26,480 
530 
(55,238)
(18)
(55,256)
(0.67)

Net loss of $65.4 million for the year ended December 31, 2021 increased by approximately $10.1 million as compared with $55.2 million for the year ended December
31, 2020, primarily as of a result of $12.5 million in license fees paid to Hanmi for development rights of HM43239, a combined increase in program costs and related
personnel expenses of approximately $4.2 million on our luxeptinib development program, and higher cash-based general and administrative expenses of approximately
$1.5 million, and lower finance income of approximately $0.4 million, offset by a decrease of $8.6 million in stock-based compensation expense.

Research and Development Expenses

Research and development expenses consist primarily of costs incurred related to the research and development of our product candidates. Costs include the following:

●

●

●

External research and development expenses incurred under agreements with third parties, such as CROs, consultants, members of our scientific advisory
boards, external labs and CMOs;

Employee-related expenses, including salaries, benefits, travel, and stock-based compensation for personnel directly supporting our clinical trials and
manufacturing, and development activities;

License fees.

We have ongoing Phase 1 clinical trials for our product candidates HM43239 and Luxeptinib. HM43239 was licensed into Aptose in Q4, 2021 and we have assumed
sponsorship, and the related costs, of the HM43239 study effective January 1, 2022. In Q4, 2021, we discontinued the APTO-253 program and are exploring strategic
alternatives for this compound.

We expect our research and development expenses to be higher for the foreseeable future as we continue to advance HM43239 and luxeptinib into larger clinical trials.

The research and development (“R&D”) expenses for the years ended December 31, 2021 and 2020 were as follows:

(in thousands)

License fee – HM43239
Program costs – HM43239
Program costs – Luxeptinib
Program costs – APTO-253
Personnel expenses
Stock-based compensation
Depreciation of equipment

Year ended December 31,

2021

2020

12,500     
57     
18,490     
3,543     
7,593     
3,790     
12     
45,985    $

- 
- 
16,329 
3,632 
5,590 
3,720 
17 
29,288 

  $

38

 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
     
       
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
     
       
 
   
   
   
   
   
   
   
 
 
R&D expenses increased by $16.7 million to $46.0 million for the year ended December 31, 2021 as compared with $29.3 million for the comparative period in 2020.
Changes to the components of our R&D expenses presented in the table above are primarily as a result of the following activities:

●

●

●

●

●

License fees paid in the year ended December 31, 2021 to Hanmi l of $12.5 million for global development rights of HM-43239, including $5.0 million in cash
and $7.5 million in Common Shares. There were no license fee paid in the year ended December 31, 2020.

Program costs for luxeptinib increased by approximately $2.2 million, mostly as a result of higher manufacturing costs associated with optimizing the
formulation and higher costs related to the luxeptinib AML trial, for which we received an IND allowance in June 2020, and offset by lower expenses related to
the 806 BCM trial.

Program costs for APTO-253 decreased by approximately $89 thousand, mostly as a result of lower clinical trial costs related to the APTO-253 Phase 1a/b
trial. In Q4, 2021, we discontinued the APTO-253 program and we are currently exploring strategic alternatives for this compound.

Personnel-related expenses increased by $2.0 million, mostly related to new positions hired to support our clinical trials and manufacturing activities.

Stock-based compensation increased by approximately $70 thousand in the year ended December 31, 2021, compared with the year ended December 31, 2020,
mostly related to higher number of options granted in the current year, and offset by those options having a lower grant date fair value as compared with the
options granted in the comparative year.

General and Administrative Expenses

General  and  administrative  expenses  consist  primarily  of  salaries,  benefits  and  travel,  including  stock-based  compensation  for  our  executive,  finance,  business
development, human resource, and support functions. Other general and administrative expenses and professional fees for auditing, and legal services, investor relations
and other consultants, insurance and facility related expenses.

We  expect  that  our  general  and  administrative  expenses  will  increase  for  the  foreseeable  future  as  we  incur  additional  costs  associated  with  being  a  publicly  traded
company  and  to  support  our  expanding  pipeline  of  activities.  We  also  expect  our  intellectual  property  related  legal  expenses  to  increase  as  our  intellectual  property
portfolio expands.

The general and administrative expenses for the years ended December 31, 2021 and 2020 are as follows:

(in thousands)

General and administrative, excluding items below:
Stock-based compensation
Depreciation of equipment

Year ended December 31,

2021

2020

  $

  $

10,164    $
9,160     
138     
19,462    $

8,627 
17,718 
135 
26,480 

General and administrative expenses for the year ended December 31, 2021 were approximately $19.5 million as compared with $26.5 million for the comparative period
in 2020, a decrease of approximately $7.0 million. The decrease was primarily as a result of the following:

●

●

General and administrative expenses, other than stock-based compensation and depreciation of equipment, increased by approximately $1.5 million in the year
ended December 31, 2020 primarily as a result of higher insurance costs, higher professional fees, higher patent costs, higher investor relations costs offset by
lower office administrative costs and lower personnel related costs.

Stock-based compensation decreased by approximately $8.6 million mostly as a result of lower number of options granted in the year ended December 31,
2021, that those options had a lower grant date fair value as compared with the options granted in the year ended December 31, 2020 and that in the
comparative year the Company had issued RSUs that had fully vested by the end of the comparative year. This decrease was offset by increased compensation
of approximately $1.7 million mostly related to the modification of option agreements of one officer as part of a separation and release agreement.

39

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
     
       
 
   
   
 
 
 
 
 
 
 
 
COVID-19 did not have a significant impact on our results of operations for the years ended December 31, 2021 and 2020. We have not experienced and do not foresee
material delays to the enrollment of patients or timelines for the HM43239 Phase 1/2 trial or the luxeptinib Phase 1a/b trials due to the variety of clinical sites that we have
actively recruited for these trials. As of the date of this report, we have not experienced material delays in the manufacturing of HM43239 or luxeptinib related to COVID-
19. Should our manufacturers be required to shut down their facilities due to COVID-19 for an extended period of time, our trials may be negatively impacted.

CRITICAL ACCOUNTING POLICIES

Critical Accounting Policies and Estimates

We periodically review our financial reporting and disclosure practices and accounting policies to ensure that they provide accurate and transparent information relative to
the current economic and business environment. As part of this process, we have reviewed our selection, application and communication of critical accounting policies
and financial disclosures. Management has discussed the development and selection of the critical accounting policies with the Audit Committee of the Board, and the
Audit Committee has reviewed the disclosure relating to critical accounting policies in this MD&A.

Significant accounting judgments and estimates

Management’s  assessment  of  our  ability  to  continue  as  a  going  concern  involves  making  a  judgment,  at  a  particular  point  in  time,  about  inherently  uncertain  future
outcomes and events or conditions. Please see the “Liquidity and Capital Resources” section in this document for a discussion of the factors considered by management in
arriving at its assessment.

Other  important  accounting  policies  and  estimates  made  by  management  are  the  estimates  related  to  prepaid  and  accrued  R&D  activities,  the  valuation  of  contingent
liabilities, the valuation of tax accounts, and the assumptions used in determining the valuation of share-based compensation.

Research and Development Activities:

R&D costs are expensed as incurred.  R&D costs consist primarily of salaries and benefits, stock-based compensation, manufacturing, contract services, clinical trials, and
research related overhead.  Non-refundable advance payments for goods and services that will be used in future research are recorded in prepaid and other assets and are
expensed when the services are performed.

The Company records expenses for research and development activities based on Management’s estimates of services received and efforts expended pursuant to contracts
with vendors that conduct research and development on the Company’s behalf. The financial terms vary from contract to contract and may result in uneven payment flows
as  compared  with  services  performed  or  products  delivered.  As  a  result,  the  Company  is  required  to  estimate  research  and  development  expenses  incurred  during  the
period, which impacts the amount of accrued expenses and prepaid balances related to such costs as of each balance sheet date. Management estimates the amount of
work completed through discussions with internal personnel and the contract research and contract manufacturing organizations as to the progress or stage of completion
of the services. The Company’s estimates are based on a number of factors, including the Company’s knowledge of the status of each of the research and development
project milestones, and contract terms together with related executed change orders. Management makes significant judgments and estimates in determining the accrued
balance at the end of each reporting period.

Although  Management  does  not  expect  our  estimates  to  be  materially  different  from  amounts  actually  incurred,  if  the  estimates  of  the  status  and  timing  of  services
performed differ from the actual status and timing of services performed, it could result in the Company reporting amounts that are too high or too low in any particular
period.  As  of  December  31,  2021,  the  Company  has  recorded  approximately  $632  thousand  in  prepaid  expenses  and  approximately  $3.5  million  in  accrued  liabilities
related to its research and development activities. If the estimates are too high or too low by a factor of 10% this would mean that prepaid expenses would be over or
understated by approximately $63 thousand, and accrued liabilities would be over or understated by approximately $350 thousand. On a combined basis, this could mean
an increase or decrease in research and development expenses by approximately $413 thousand. To date, there have been no material differences between the estimates of
such expenses and the amounts actually incurred.

Valuation of contingent liabilities:

The  Company  utilizes  considerable  judgment  in  the  measurement  and  recognition  of  provisions  and  the  Company’s  exposure  to  contingent  liabilities.  Judgment  is
required  to  assess  and  determine  the  likelihood  that  any  potential  or  pending  litigation  or  any  and  all  potential  claims  against  the  Company  may  be  successful.  The
Company must estimate if an obligation is probable, as well as quantify the possible economic cost of any claim or contingent liability. Such judgments and assumptions
are  inherently  uncertain.  The  increase  or  decrease  of  one  of  these  assumptions  could  materially  increase  or  decrease  the  fair  value  of  the  liability  and  the  associated
expense.

40

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Valuation of tax accounts:

Uncertainties  exist  with  respect  to  the  interpretation  of  complex  tax  regulations  and  the  amount  and  timing  of  future  taxable  income.  Currently,  the  Company  has
deductible temporary differences which would create a deferred tax asset. Deferred tax assets are recognized for all deductible temporary differences to the extent that it is
probable that future taxable profit will be available against which the deductible temporary differences can be utilized. Management judgment is required to determine the
amount of deferred tax assets that can be recognized, based upon the likely timing and the level of future taxable profits together with future tax planning strategies. To
date, the Company has determined that none of its deferred tax assets should be recognized. The Company’s deferred tax assets are mainly comprised of its net operating
losses from prior years and prior year research and development expenses not yet deducted for income tax purposes. These tax pools relate to entities that have a history
of losses, have varying expiry dates, and may not be used to offset taxable income. As well, there are no taxable temporary differences or any tax planning opportunities
available that could partly support the recognition of these losses as deferred tax assets. The generation of future taxable income could result in the recognition of some
portion or all of the remaining benefits, which could result in an improvement in the Company’s results of operations through the recovery of future income taxes.

Valuation of share based compensation:

Management  measures  the  costs  for  share  based  payments  using  market-based  option  valuation  techniques.  Assumptions  are  made  and  judgment  is  used  in  applying
valuation  techniques.  These  assumptions  and  judgments  include  estimating  the  future  volatility  of  the  share  price,  expected  dividend  yield,  and  expected  life  of  the
options. The Company uses historical data to estimate the expected dividend yield and expected volatility of its Common Shares in determining the fair value of stock
options. The expected life of the options represents the estimated length of time the options are expected to remain outstanding. Such judgments and assumptions are
inherently uncertain. The increase or decrease of one of these assumptions could materially increase or decrease the fair value of share based payments and share purchase
warrants issued and the associated expense.

The weighted average assumptions that were used in the Black Scholes option pricing model to determine the fair value of stock options granted during the periods ended
December 31, 2021 and 2020, respectively, are presented in Note 12 to the consolidated financial statements.

Updated share information

As at March 22, 2022, we had 92,229,189 Common Shares issued and outstanding. In addition, there were 18,674,755 Common Shares issuable upon the exercise of
outstanding stock options.

ITEM 7A. QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK

Under SEC rules and regulations, as a smaller reporting company, we are not required to provide this information.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The financial statements required by this item are included in the Exhibits to this Annual Report on Form 10-K.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

As of the end of our fiscal year ended December 31, 2021, an evaluation of the effectiveness of our “disclosure controls and procedures” (as such term is defined in Rules
13a-15(e) and 15d-15(e) under the Exchange Act) was carried out by our management, with the participation of our principal executive officer and principal financial
officer.  Based  upon  that  evaluation,  our  principal  executive  officer  and  principal  financial  officer  have  concluded  that  as  of  the  end  of  that  fiscal  year,  our  disclosure
controls and procedures are effective to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is (i) recorded,
processed, summarized and reported within the time periods specified in SEC rules and forms and (ii) accumulated and communicated to our management, including our
principal executive officer and principal financial officers, to allow timely decisions regarding required disclosure.

It should be noted that while our principal executive officer and principal financial officer believe that our disclosure controls and procedures provide a reasonable level of
assurance that they are effective, they do not expect that our disclosure controls and procedures or internal control over financial reporting will prevent all errors or fraud.
A control system, no matter how well conceived or operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met.

41

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our management is responsible for establishing and maintaining adequate internal control over financial reporting as such term is defined in Exchange Act Rule 13a-
15(f). Internal control over financial reporting is a process designed under the supervision and with the participation of our management, including our principal executive
and financial officer, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in
accordance with accounting principles generally accepted in the United States of America.

As of December 31, 2021, our management assessed the effectiveness of our internal control over financial reporting using the criteria set forth by the Committee of
Sponsoring  Organizations  of  the  Treadway  Commission  in  Internal  Control-Integrated  Framework  (2013  Framework).  Based  on  this  assessment,  our  management
concluded that, as of December 31, 2021, our internal control over financial reporting was effective based on those criteria. We are a “smaller reporting company” as
defined in Item 10(f)(1) of Regulation S-K under the Securities Act. For as long as we continue to be a smaller reporting company, we may take advantage of exemptions
from various reporting requirements that are applicable to other public companies that are not smaller reporting companies.

CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING

There were no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) under the 1934 Act) during our fiscal quarter ended December 31,
2021, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B. OTHER INFORMATION

None.

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS

Not applicable.

PART III.

Certain  information  required  by  Part  III  of  this  Annual  Report  on  Form  10-K  is  omitted  from  this  report  because  we  are  incorporating  by  reference  to  the
definitive Proxy Statement for our 2022 Annual Meeting of Shareholders, referred to as the Proxy Statement, which will be filed with the SEC within 120 days of the
2021 fiscal year-end.

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this item is incorporated herein by reference to the information from the Proxy Statement under the sections entitled “Election of
Directors,” “Nomination of Directors,” and “Corporate Governance – Board Committees” and except for the information required with respect to our executive officers,
which has been included under the heading “Executive Officers” in Item 1, Part I of this Form 10-K, and is incorporated herein by reference, and except for information
on our code of ethics:

We  have  adopted  a  code  of  ethics  for  directors,  officers  (including  our  principal  executive  officer,  principal  financial  officer  and  principal  accounting  officer)  and
employees, known as the Code of Business Conduct and Ethics. The Code of Business Conduct and Ethics is available on our website at http://www.aptose.com under the
Corporate Governance section of our Investor Relations page. We will promptly disclose on our website (i) the nature of any amendment to the policy that applies to our
principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and (ii) the nature of any waiver,
including an implicit waiver, from a provision of the policy that is granted to one of these specified individuals that is required to be disclosed pursuant to SEC rules and
regulations, the name of such person who is granted the waiver and the date of the waiver.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is incorporated herein by reference to the information from the Proxy Statement under the sections entitled “Executive

Compensation,” and “Director Compensation.”

42

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The  information  required  by  this  item  is  incorporated  herein  by  reference  to  the  information  from  the  Proxy  Statement  under  the  sections  entitled  “Share

Ownership of Certain Beneficial Owners, Management and Directors” and “Equity Compensation Plan Information.”

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AN DIRECTOR INDEPENDENCE

The information required by this item is incorporated herein by reference to the information from the Proxy Statement under the sections entitled “Corporate

Governance - Independence of the Board” and “Interest of Related Persons in Transactions.”

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this item is incorporated herein by reference to the information from the Proxy Statement under the section entitled “Audit, Audit-

Related, Tax and Other Fees” and “Pre-Approval Policies and Procedures.”

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a) Documents filed as part of this report.

1. Financial Statements. We have filed the following documents as part of this Annual Report:

PART IV.

Report of Independent Registered Public Accounting Firm (KPMG LLP, Vaughan, Canada, Auditor Firm ID: 85)

Balance Sheets

Statements of Operations and Comprehensive Loss

Statements of Shareholders’ Equity

Statements of Cash Flows

Notes to Financial Statements

2. Financial Statement Schedules.

Page

F-2 - F-4

F-5

F-6

F-7

F-8

F-9

All schedules are omitted because they are not applicable or the required information is shown in the Financial Statements or notes thereto.

(b) Exhibits

The following exhibits are filed as part of, or incorporated by reference into, this report:

Exhibit Number

Description of Document

3.1

3.2

Articles of Incorporation, Arrangement and Amendment (incorporated herein by reference to Exhibit 99.3 to the Company’s Current Report on
Form 6-K filed with the SEC on June 12, 2015)

By-law #2 of the Company (incorporated herein by reference to Exhibit 99.2 to the Company’s Current Report on Form 6-K filed with the SEC
on June 12, 2015)

43

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit Number

Description of Document

4.1*

10.1

10.2+

10.3+

10.4+

10.5+

10.6+

10.7+

10.8

10.9

10.10

10.11

10.12

10.13

Description of Securities

Indemnification Agreement dated July 10, 2007 between Lorus Therapeutics Inc. and the Company (incorporated herein by reference to
Exhibit  99.1 to the Company’s Current Report on Form 6-K filed with the SEC on September 4, 2007)

Amended and Restated Executive Employment Agreement between the Company and Dr. William G. Rice dated August  19, 2014 (incorporated
herein by reference to Exhibit 4.9A to the Company’s Annual Report on Form 20-F filed with the SEC on March 4, 2015)

Executive Employment Agreement between the Company and Gregory K. Chow dated November 29, 2013 (incorporated herein by reference to
Exhibit 4.9.1 to the Company’s Annual Report on Form 20-F filed with the SEC on May 16, 2014)

Share Option Plan as amended May 5, 2015 (incorporated herein by reference to Exhibit 99.2 to the Company’s Current Report on Form 6-K filed
with the SEC on June 12, 2015)

Stock Incentive Plan as adopted May 5, 2015 (incorporated herein by reference to Exhibit 99.1 to the Company’s Current Report on Form 6-K
filed with the SEC on June 12, 2015)

Form of Executive Employment Agreement, dated June 3, 2019, between the Company and Dr. Jotin Marango (incorporated herein by reference
to Exhibit 10.4 to the Company’s Quarterly Report filed on Form 10-Q on August 6, 2019)

Form of Executive Employment Agreement, dated December 4, 2019, between the Company and Dr. Rafael Bejar (incorporated herein by
reference to Exhibit 10.7 to the Company’s Annual Report filed on Form 10-K filed with the SEC on March 10, 2020)

License agreement dated June 13, 2018 by and between the Company and CrystalGenomics, Inc. (incorporated herein by reference to Exhibit 1.1
to the Company’s Current Report on Form 6-K filed with the SEC filed on June 22, 2018)

Option and License Agreement between the Company and CrystalGenomics, Inc. dated March 21, 2016 (incorporated herein by reference on
Form 10-KA/3 filed with the SEC on April 22, 2019)

Amendment to Option and License Agreement between the Company and CrystalGenomics, Inc., dated April 26, 2016 (incorporated herein by
reference to Exhibit 99.2 to the Company’s Current Report on Form 6-K filed with the SEC on June 8, 2016)

Second Amendment to Option and License Agreement between the Company and CrystalGenomics, Inc., dated May 13, 2016 (incorporated
herein by reference to Exhibit 99.3 to the Company’s Current Report on Form 6-K filed with the SEC on June 8, 2016)

Third Amendment to Option and License Agreement between the Company and CrystalGenomics, Inc., dated May 19, 2016 (incorporated herein
by reference to Exhibit 99.4 to the Company’s Current Report on Form 6-K filed with the SEC on June 8, 2016)

Fourth Amendment to Option and License Agreement between the Company and CrystalGenomics, Inc., dated June 1, 2016 (incorporated herein
by reference to Exhibit 99.5 to the Company’s Current Report on Form 6-K filed with the SEC on June 8, 2016)

44

 
 
 
Exhibit Number

Description of Document

10.14

10.15

10.16

10.17

10.18

10.19+

10.20+

10.21 +

10.22

21.1*

23.1*

24.1*

31.1*

31.2*

32.1*

32.2*

License Agreement dated as of March 6, 2018 by and between the Company and Ohm Oncology Inc. (incorporated herein by reference to Exhibit
99.2 on Form 6-K filed with the SEC filed on March 8, 2018)

Underwriting Agreement, dated May 30, 2019, between Aptose Biosciences Inc. and RBC Capital Markets, LLC and Canaccord Genuity LLC
(incorporated herein by reference to Exhibit 1.1 to the Company’s Current Report filed on Form 8-K on May 30, 2019).

Underwriting Agreement, dated December 16, 2019, between Aptose Biosciences Inc. and Piper Sandler & Co. (incorporated herein by reference
to Exhibit 1.1 to the Company’s Current Report filed on Form 8-K on December 17, 2020).

Equity Distribution Agreement dated May 5, 2020 between the Company and Piper Sandler & Co. and Cannacord Genuity LLC (incorporated by
reference to Exhibit 10.1 on Form 8K filed with the SEC on May 5, 2020).

Underwriting Agreement, dated July 15, 2020, between Aptose Biosciences Inc. and Piper Sandler & Co. (incorporated herein by reference to
Exhibit 1.1 to the Company’s Current Report filed on Form 8-K on July 16, 2020).

Consulting Agreement dated March 26, 2021 between Aptose Biosciences Inc. and Gregory K. Chow (incorporated by reference to Exhibit 10.1
to Aptose Biosciences Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2021).

Aptose Biosciences Inc. 2021 Employee Stock Purchase Plan ( incorporated by reference to the Definitive Proxy statement on Schedule 14A filed
with the SEC on April 1, 2021)(File no. 1-32001)

Aptose Biosciences Inc. 2021 Employee Stock Incentive Plan ( incorporated by reference to the Definitive Proxy statement on Schedule 14A filed
with the SEC on April 1, 2021)(File no. 1-32001)

Exclusive License Agreement, dated November 4, 2021, by and between Hanmi Pharmaceutical Co. Ltd. and Aptose Biosciences Inc. (
incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report filed on Form 8-K on November 4, 2021)

List of Subsidiaries

Consent of Independent Registered Public Accounting Firm (KPMG)

Powers of Attorney (included on signature page)

Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act
of 2002.

Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of
2002.

101.INS**

Inline XBRL Instance Document

101.SCH

101.CAL

101.DEF

Inline XBRL Taxonomy Extension Schema Document

Inline XBRL Taxonomy Extension Calculation Linkbase Document

Inline XBRL Taxonomy Extension Definition Linkbase Document

45

 
 
 
Exhibit Number

Description of Document

101.LAB

101.PRE

104

+

*

**

Inline XBRL Taxonomy Extension Label Linkbase Document

Inline XBRL Taxonomy Extension Presentation Linkbase Document

Cover Page Interactive Data File (embedded within the Inline XBRL document)

Indicates management contract or compensatory plan.

Filed herewith.

Confidential treatment has been sought with respect to certain portions of this exhibit.

Confidential treatment has been granted with respect to certain portions of this exhibit. Omitted portions have been filed separately with the
Securities and Exchange Commission.

In accordance with Rule 406T of Regulation S-T, the Inline XBRL related information in Exhibit 101 to this Annual Report on Form 10-K is
deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act, is deemed not filed for
purposes of Section 18 of the Exchange Act, and otherwise is not subject to liability under these sections.

ITEM 16. FORM 10-K SUMMARY

None.

46

 
 
 
 
 
 
 
 
 
Pursuant to the requirements of the Securities Act, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly

authorized, in the City of San Diego, State of California, on the 22nd day of March, 2022.

SIGNATURES

Aptose Biosciences Inc.

/s/ William G. Rice

By:

William G. Rice, Ph.D.
President, Chief Executive Officer and Chairman
of the Board of Directors

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Dr. William G. Rice and Dr. Jotin Marango ,
and each of them, his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place
and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this report, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and
authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or either of them, or their or his substitutes or substitute, may lawfully do
or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the
capacities and on the dates indicated.

Signature

Title

/s/ William G. Rice, Ph.D.

/s/ Jotin Marango, M.D., Ph.D.

President, Chief Executive Officer and Chairman of the Board of Directors (Principal
Executive Officer)

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

/s/ Denis R. Burger, Ph.D.

Director, Lead Independent

/s/ Carol G. Ashe

/s/ Caroline Loewy

/s/ Erich M. Platzer, M.D., Ph.D.

/s/ Mark D.Vincent, M.D.

/s/ Warren Whitehead

Director

Director

Director

Director

Director

47

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated Financial Statements

APTOSE BIOSCIENCES INC.

Years ended December 31, 2021 and 2020

F-1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
KPMG LLP
100 New Park Place, Suite 1400
Vaughan, ON L4K 0J3
Tel 905-265 5900
Fax 905-265 6390
www.kpmg.ca

To the Shareholders and Board of Directors
Aptose Biosciences Inc.

Opinion on the Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

We have audited the accompanying consolidated statements of financial position of Aptose Biosciences Inc. and subsidiaries (the Company) as of December 31, 2021 and
2020, the related consolidated statements of loss and comprehensive loss, changes in shareholders’ equity, and cash flows for each of the years in the two-year period
ended December 31, 2021, and the related notes (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in
all material respects, the financial position of the Company as of December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the years in
the two-year period ended December 31, 2021, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial
statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (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 consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged
to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial
reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no
such opinion.

KPMG LLP, an Ontario limited liability partnership and member firm of the KPMG global organization of independent member firms affiliated with KPMG International Limited, a private
English company limited by guarantee. KPMG Canada provides services to KPMG LLP.

F-2

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Aptose Biosciences Inc.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated 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
consolidated 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 consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required
to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our
especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the consolidated financial
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts
or disclosures to which it relates.

Research and Development Prepaid and Accrued Costs

As discussed in Notes 2(i), 4 and 9 to the consolidated financial statements, the Company records expenses for research and development activities based on
Management’s estimates of services received and efforts expended pursuant to contracts with vendors that conduct research and development on the Company’s behalf.
The financial terms vary from contract to contract and may result in uneven payment flows as compared with services performed or products delivered. As a result, the
Company is required to estimate research and development expenses incurred during the period, which impacts the amount of accrued expenses and prepaid balances
related to such costs as of each balance sheet date. Management estimates the amount of work completed through discussions with internal personnel and the contract
research and contract manufacturing organizations as to the progress or stage of completion of the services. The Company’s estimates are based on a number of factors,
including the Company’s knowledge of the status of each of the research and development project milestones, and contract terms together with related executed change
orders. Management makes significant judgments and estimates in determining the accrued balance at the end of each reporting period.

We identified the evaluation of research and development prepaid and accrued costs as a critical audit matter. Higher degree of auditor judgment was required in
evaluating the results of our audit procedures because of the subjectivity and estimation uncertainty associated with this estimate.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design of certain internal controls related to the critical audit
matter. This included controls over the development of the estimated amount of prepaid and accrued costs incurred by the contract research and contract manufacturing
organizations. For a selection of research and development projects, we assessed the Company’s estimates of a selection of the research and development activities
completed to date by:

F-3

 
 
 
 
 
 
 
 
 
 
 Aptose Biosciences Inc.

●inquiring with Company personnel responsible for overseeing the research and development activities to understand progress of the activities including project

milestones, and contract terms together with related executed change orders

●inspecting the terms of the contracts, including related executed change orders, between the Company and the respective contract research and contract manufacturing
organizations, the correspondence between the Company and these organizations as to the completion status, and using this information to arrive at an independent
estimate of the prepaid or accrual amounts and comparing it to the amounts recorded by the Company

We have served as the Company’s auditor since 1994.

/s/KPMG LLP

Chartered Professional Accountants, Licensed Public Accountants

Vaughan, Canada
March 22, 2022

F-4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.

Consolidated Statements of Financial Position
(Expressed in thousands of US dollars)

Assets

Current assets:

Cash and cash equivalents
Investments
Prepaid expenses
Other current assets
Total current assets

Non-current assets:

Property and equipment
Right-of-use assets, operating leases
Total non-current assets

Total assets

Liabilities and Shareholders’ Equity

Current liabilities:

Accounts payable
Accrued liabilities
Current portion of lease liability, operating leases
Total current liabilities

Non-current liabilities:

Lease liability, operating leases
Total liabilities

Shareholders’ equity:

Share capital:

Common shares, no par value, unlimited authorized shares, 92,215,024 and 88,881,737 shares issued and
outstanding at December 31, 2021 and December 31, 2020, respectively

Additional paid-in capital
Accumulated other comprehensive loss
Deficit
Total shareholders’ equity

Total liabilities and shareholders’ equity

See accompanying notes to consolidated financial statements.
Subsequent events (note 16)

F-5

December 31,

2021   

December 31,
2020 

  $

39,114    $
40,014     
2,476     
133     
81,737     

323     
465     
788     

117,393 
5,000 
2,554 
129 
125,076 

261 
925 
1,186 

  $

82,525    $

126,262 

  $

1,699     
6,016     
459     
8,174     

115     
8,289     

2,171 
4,102 
539 
6,812 

535 
7,347 

437,386     
63,673     
(4,316)    
(422,507)    
74,236     

429,523 
50,861 
(4,316)
(357,153)
118,915 

  $

82,525    $

126,262 

 
 
 
 
 
 
 
 
 
 
       
 
 
 
 
 
       
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
 
 
      
  
 
 
 
       
 
 
 
 
 
 
 
 
 
 
      
  
 
 
 
      
  
 
 
 
       
 
 
 
 
 
       
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
      
  
 
 
 
       
 
 
 
 
 
 
     
       
 
 
 
 
       
 
 
 
 
       
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
  
 
 
APTOSE BIOSCIENCES INC.
Consolidated Statements of Loss and Comprehensive Loss
(Expressed in thousands of US dollars, except for per common share data)

Revenue

Expenses:

Research and development
General and administrative
Operating expenses

Other income :

Interest income
Foreign exchange gain/(loss)
Total other income

Net loss

Other comprehensive loss:
Unrealized loss on securities available-for-sale
Total comprehensive loss

Basic and diluted loss per common share

Year ended
December 31, 2021 

Year ended
December 31, 2020 

$

-  $

- 

45,985   
19,462   
65,447   

94   
(1)  
93   

29,288 
26,480 
55,768 

522 
8 
530 

(65,354)  

(55,238)

$

$

-   
(65,354) $

(0.73) $

(18)
(55,256)

(0.67)

Weighted average number of common shares outstanding used in the calculation of (in thousands)

Basic and diluted loss per common share

89,086   

81,837 

See accompanying notes to consolidated financial statements.

F-6

 
 
 
 
 
 
   
     
 
 
   
     
 
   
     
 
 
 
 
 
 
    
  
   
     
 
 
 
 
 
 
    
  
 
 
   
     
 
   
     
 
 
 
 
    
  
 
 
    
  
   
     
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.
Consolidated Statements of Changes in Shareholders’ Equity
(Expressed in thousands of US dollars, except for per common share data)

Common Shares

Shares

(thousands)   

Amount     

Additional
paid-in
capital     

Accumulated
other
comprehensive

loss     

Deficit     

Total 

88,882    $

429,523    $

50,861    $

(4,316)   $

(357,153)   $

118,915 

3,236     
15     
82     
-     
-     
92,215    $
76,108    $
11,854     
235     
-     

685     
-     
-     
88,882    $

7,500     
36     
327     
-     
-     
437,386    $
365,490    $
58,234     
998     
-     

4,801     
-     
-     
429,523    $

-     
-     
(137)    
12,949     
-     
63,673    $
34,649    $
-     
(425)    
21,438     

(4,801)    
-     
-     
50,861    $

-     
-     
-     
-     
-     
(4,316)   $
(4,298)   $
-     
-     
-     

-     
(18)    
-     
(4,316)   $

-     
-     
-     
-     
(65,354)    
(422,507)   $
(301,915)   $
-     
-     
-     

-     
-     
(55,238)    
(357,153)   $

7,500 
36 
190 
12,949 
(65,354)
74,236 
93,926 
58,234 
573 
21,438 

- 
(18)
(55,238)
118,915 

Balance, December 31, 2020
Common shares issued pursuant to the Hanmi licensing
fees
Common shares issued under the May 2020 ATM
Common shares issued upon exercise of stock options
Stock-based compensation
Net loss
Balance, December 31, 2021
Balance, December 31, 2019
Common shares issued pursuant to the public offering
Common shares issued upon exercise of stock options
Stock-based compensation
Common shares issued upon redemption of restricted
share units
Other comprehensive loss
Net loss
Balance, December 31, 2020

See accompanying notes to consolidated financial statements.

F-7

 
 
 
 
 
 
   
    
    
    
  
 
 
 
     
       
       
       
       
       
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
 
APTOSE BIOSCIENCES INC.
Consolidated Statements of Cash Flows
(Expressed in thousands of US dollars)

Cash flows from operating activities:

Net loss for the year
Items not involving cash:

Stock-based compensation
Shares issued to Hanmi Pharmaceutical as license fees
Depreciation and amortization
Amortization of right-of-use assets
Interest on lease liabilities
Unrealized foreign exchange gain/(loss)
Accrued interest on investments
Change in operating working capital:

Prepaid expenses
Operating lease payments
Other assets
Accounts payable
Accrued liabilities
Cash used in operating activities

Cash flows from financing activities:

Issuance of common shares under 2020 ATM
Issuance of common shares under July/August 2020 Public Offering
Offering costs paid
Issuance of common shares pursuant to exercise of stock options
Cash provided by financing activities

Cash flows from (used in) investing activities:
Maturity (acquisition) of investments, net
Purchase of property and equipment
Cash provided by (used in) investing activities

Effect of exchange rate fluctuations on cash and cash equivalents held

Increase/(decrease) in cash and cash equivalents

Cash and cash equivalents, beginning of year
Cash and cash equivalents, end of year

See accompanying notes to consolidated financial statements.

Year ended

December 31, 2021   

Year ended
December 31, 2020 

  $

(65,354)  

(55,238)

12,949   
7,500   
150   
472   
43   
(7)  
(18)  

78   
(555)  
(4)  
(472)  
1,914   
(43,304)  

36   
-   
-   
190   
226   

(34,996)  
(212)  
(35,208)  

7   

(78,279)  

  $

117,393   
39,114    $

F-8

21,438 
- 
152 
462 
69 
(8)
33 

(1,529)
(537)
12 
211 
1,044 
(33,891)

- 
58,402 
(168)
573 
58,807 

12,707 
(79)
12,628 

7 

37,551 

79,842 
117,393 

 
 
 
 
 
 
 
     
       
 
     
   
 
 
 
 
     
   
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
     
   
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
     
       
 
     
   
 
 
 
   
 
   
 
   
 
   
 
   
 
 
     
       
 
     
   
 
 
 
   
 
   
 
   
 
 
     
       
 
   
 
 
     
       
 
   
 
 
     
       
 
   
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

1.

Reporting entity:

Aptose Biosciences Inc. (“Aptose” or the “Company”) is a clinical‑stage precision oncology company developing differentiated kinase inhibitors addressing unmet
medical needs in oncology. The Company’s executive offices are located in San Diego, California and its head office is located in Toronto, Canada.

Aptose  has  two  clinical-stage  programs  and  a  third  program  in  discovery-stage  and  partnered  with  another  company.  Luxeptinib  (previously  named  CG-806),
Aptose’s dual lymphoid and myeloid kinome inhibitor, is currently evaluating the safety, tolerability, PK, and preliminary efficacy of luxeptinib in a Phase 1a/b,
multicenter, dose-escalation trial with expansions to assess in patients with chronic lymphocytic leukemia (CLL/SLL) or non-Hodgkin lymphomas (NHL), and, in
parallel, a separate Phase 1a/b multicenter, dose escalation trial in patients with relapse or refractory acute myeloid leukemia (AML) and high-risk Myelodysplastic
Syndrome  (MDS)  .  In  November  2021,  Aptose  licensed  in  HM43239  from  Hanmi  Pharmaceutical  Co.  HM43239  is  an  oral  potent  myeloid  kinome  inhibitor,
targeting  a  constellation  of  kinases  operative  in  myeloid  malignancies  and  known  to  be  involved  in  tumor  proliferation,  resistance  to  therapy,  and
differentiation.  Specifically,  HM43239  is  a  potent  inhibitor  of  FLT3,  SYK,  cKIT-MUT,  JAK,  and  other  kinases.  HM43239  is  currently  being  evaluated  in  an
international Phase 1/2 dose-escalation clinical trial designed to assess the safety, tolerability, pharmacokinetics and pharmacodynamic responses of HM43239 as a
single agent in patients with relapsed or refractory AML. Aptose assumed sponsorship of this trial effective January 1, 2022. In December 2021 Aptose announced
that it was discontinuing further development of APTO-253, a small molecule MYC inhibitor, previously positioned in a Phase 1a/b clinical trial for the treatment
of patients with R/R blood cancers, including AML and high risk MDS.

We are advancing first-in-class targeted agents to treat life-threatening cancers that, in most cases, are not elective for patients and require immediate treatment. 
However, COVID-19  has  caused  global  economic  and  social  disruptions  that  could  adversely  affect  our  ongoing  and  planned  research  and  development  of  our
clinical-stage  programs  including  but  not  limited  to  drug  manufacturing  campaigns,  clinical  trial  activities  including  enrollment  of  patients  in  our  ongoing  and
planned clinical trials, collection and analysis of patient data and eventually, the reporting of results from our trials. 

Since  our  inception,  we  have  financed  our  operations  and  technology  acquisitions  primarily  from  equity  financing,  proceeds  from  the  exercise  of  warrants  and
stock options, and interest income on funds held for future investment. Our uses of cash for operating activities have primarily consisted of salaries and wages for
our employees, facility and facility-related costs for our offices and laboratories, fees paid in connection with preclinical and clinical studies, drug manufacturing
costs, laboratory supplies and materials, and professional fees.

We do not expect to generate positive cash flow from operations for the foreseeable future due to the early stage of our clinical trials. It is expected that negative
cash flow will continue until such time, if ever, that we receive regulatory approval to commercialize any of our products under development and/or royalty or
milestone revenue from any such products exceeds expenses.

We believe that our cash, cash equivalents and investments on hand at December 31, 2021 will be sufficient to finance our operations for at least 12 months from
the issuance date of these financial statements. Our cash needs for the next twelve months include estimates of the number of patients and rate of enrollment of our
clinical trials, the amount of drug product that we will require to support our clinical trials, and our general corporate overhead costs to support our operations, and
our  reliance  on  our  manufacturers.  We  have  based  these  estimates  on  assumptions  and  plans  which  may change  and  which  could  impact  the  magnitude  and/or
timing of operating expenses and our cash runway.

Our ability to raise additional funds could be affected by adverse market conditions, the status of our product pipeline, possible delays in enrollment in our trial
related  to  COVID-19,  and  various  other  factors  and  we  may be  unable  to  raise  capital  when  needed,  or  on  terms  favorable  to  us.  If  necessary  funds  are  not
available,  we  may have  to  delay,  reduce  the  scope  of,  or  eliminate  some  of  our  development  programs,  potentially  delaying  the  time  to  market  for  any  of  our
product candidates.

F- 9

 
 
 
 
 
 
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

2.

Significant accounting policies

(a) Basis of consolidation:

These consolidated financial statements include the accounts of its subsidiaries. All intercompany transactions, balances, revenue and expenses are eliminated
on consolidation.

(b) Basis of presentation:

These consolidated financial statements have been prepared in conformity with generally accepted accounting principles in the United States, or GAAP and
the rules and regulations of the Securities and Exchange Commission, or SEC, related to annual reports filed on Form 10-K. The functional and presentation
currency of the Company is the US dollar.

(c) Significant accounting policies, estimates and judgments:

The  preparation  of  the  consolidated  financial  statements  requires  management  to  make  judgments,  estimates  and  assumptions  that  affect  the  application  of
accounting policies and reported amounts of assets and liabilities at the date of the consolidated financial statements and reported amounts of revenue and
expenses during the reporting period. Actual outcomes could differ from those estimates. The consolidated financial statements include estimates, which, by
their nature, are uncertain.

The  impacts  of  such  estimates  are  pervasive  throughout  the  consolidated  financial  statements  and  may  require  accounting  adjustments  based  on  future
occurrences.

The  estimates  and  underlying  assumptions  are  reviewed  on  a  regular  basis.  Revisions  to  accounting  estimates  are  recognized  in  the  period  in  which  the
estimate is revised and in any future periods affected.

(d) Leases

The Company’s operating leases of tangible property with terms greater than twelve months are recognized as right of use assets, which represents the lessee’s
right to use, or control the use of, a specified asset for the lease term, and a corresponding lease liability, which represents the lessee’s obligation to make lease
payments  under  a  lease,  measured  on  a  discounted  basis.  Landlord  inducements  in  the  form  of  free  rent  periods  are  netted  against  lease  payments  to  the
landlord in measuring right-of-use assets and lease liabilities.

(e) Cash and cash equivalents:

Cash and cash equivalents are short-term highly liquid investments with original maturities of 90 days or less as at the date of purchase. Cash equivalents are
accounted for an amortized cost basis, which approximates its fair value due to their short-term maturities.

(f)

Investments:

Investments  consist  of  term  deposits  with  original  maturities  greater  than  90  days  and  are  classified  by  management  as  securities  available-for-sale.  These
available-for-sale  securities  are  recorded  at  estimated  fair  values.  Unrealized  gains  and  losses  on  these  investments  are  recorded  in  accumulated  other
comprehensive income (AOCI) in shareholder’s equity. Realized gains and losses and declines in value that are judged to be other than temporary are included
in interest income.

(g) Concentration of risk:

The Company is subject to credit risk from the Company’s cash and cash equivalents and investments. The carrying amount of the financial assets represents
the  maximum  credit  exposure.  The  Company  manages  credit  risk  associated  with  its  cash  and  cash  equivalents  and  investments  by  maintaining  minimum
standards of R1‑low or A‑low investments and the Company invests only in highly rated Canadian corporations and treasury bills, which are capable of prompt
liquidation.

F- 10

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

(h) Property and equipment:

Property and equipment is measured at cost less accumulated depreciation and accumulated impairment losses. Cost includes expenditures that are directly
attributable to the acquisition of the asset. The Company records depreciation at rates that charge operations with the cost of the assets over their estimated
useful lives on a straight‑line basis as follows:

Office furniture
Laboratory equipment
Computer hardware
Computer software
Leasehold improvements

5 years
5 years
3 years
3 years
Life of lease

The residual value, useful life and methods of depreciation of the assets are reviewed at each reporting period and adjusted prospectively if appropriate.

(i) Research and development:

Research  and  development  (R&D)  costs  are  expensed  as  incurred.  R&D  costs  consist  primarily  of  salaries  and  benefits,  stock-based  compensation,
manufacturing, contract services, clinical trials and research related overhead. Non-refundable advance payments for goods and services that will be used in
future research are recorded in prepaid and other assets and are expensed when the services are performed.

The Company records expenses for research and development activities based on Management’s estimates of services received and efforts expended pursuant
to contracts with vendors that conduct research and development on the Company’s behalf. The financial terms vary from contract to contract and may result
in  uneven  payment  flows  as  compared  with  services  performed  or  products  delivered.  As  a  result,  the  Company  is  required  to  estimate  research  and
development expenses incurred during the period, which impacts the amount of accrued expenses and prepaid balances related to such costs as of each balance
sheet  date.  Management  estimates  the  amount  of  work  completed  through  discussions  with  internal  personnel  and  the  contract  research  and  contract
manufacturing organizations as to the progress or stage of completion of the services. The Company’s estimates are based on a number of factors, including
the Company’s knowledge of the status of each of the research and development project milestones, and contract terms together with related executed change
orders. Management makes significant judgments and estimates in determining the accrued balance at the end of each reporting period.

(j) Fair value:

The Company measures its financial assets and liabilities at fair value. The carrying amounts for the Company’s financial instruments, including cash and cash
equivalents, accounts payable and accrued liabilities approximate their fair value due to their short maturities. Fair value is the price that would be received to
sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

(k) Stock-based compensation:

The  Company  has  a  stock‑based  compensation  plan  (the  “Plan”)  available  to  officers,  directors,  employees  and  consultants  with  grants  under  the  Plan
approved by the Company’s Board of Directors. Under the Plan, the exercise price of each option equals the closing trading price of the Company’s stock on
the day prior to the grant if the grant is made during the trading day or the closing trading price on the day of grant if the grant is issued after markets have
closed. Vesting is provided for at the discretion of the Board of Directors and the expiration of options is to be no greater than 10 years from the date of grant.

The Company uses the fair value based method of accounting for employee awards granted under the Plan. The Company calculates the fair value of each
stock  option  grant  using  the  Black‑Scholes  option  pricing  model  at  the  grant  date.  The  stock‑based  compensation  cost  of  the  options  is  recognized  as
stock‑based compensation expense over the relevant vesting period of the stock options using an estimate of the number of options that will eventually vest.

F- 11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

Stock options awarded to non‑employees are measured at grant-date fair value of the equity instruments issued in accordance with FASB issued accounting
standards update No 2018-07, Topic 718.

The  Company  has  a  stock  incentive  plan  pursuant  to  which  the  Board  may grant  equity  settled  stock‑based  awards  comprised  of  restricted  stock  units  or
dividend equivalents to employees, officers, consultants, independent contractors, advisors and non‑employee directors of the Company. Compensation cost
for restricted share units is measured at fair value at the date of grant, which is the market price of the underlying security, and is expensed over the award’s
vesting period on a straight-line basis using an estimate of the number of awards that will eventually vest.

(l) Segment reporting:

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief
operating  decision-maker,  or  CODM.  The  Company’s  Chief  Executive  Officer  serves  as  its  CODM.  The  Company  views  its  operations  and  manages  its
business  as  one  segment,  which  is  the  discovery  and  development  of  personalized  therapies  addressing  unmet  medical  needs  in  oncology.  The  Company
operates primarily in the US.

(m) Loss per share:

Basic loss per share is computed by dividing the net loss available to common shareholders by the weighted average number of shares outstanding during the
year. Diluted loss per share is computed similarly to basic loss per share except that the weighted average share outstanding is increased to include additional
shares for the assumed exercise of stock options and warrants, if dilutive. The number of additional shares is calculated by assuming that outstanding stock
options and warrants were exercised and that the proceeds from such exercises were used to acquire common stock at the average market price during the year.
The inclusion of the Company’s stock options and warrants in the computation of diluted loss per share has an anti‑dilutive effect on the loss per share and,
therefore, they have been excluded from the calculation of diluted loss per share.

(n) Income taxes:

The  Company  accounts  for  income  taxes  under  the  asset  and  liability  method.  Under  this  method,  deferred  tax  assets  and  liabilities  are  recognized  for  the
estimated future tax consequences attributable to differences between financial statement carrying amounts of existing assets and liabilities and their respective
tax bases. Deferred tax assets and liabilities are measured using enacted rates in effect for the year in which these temporary differences are expected to be
recovered or settled. Valuation allowances are provided if, based on the weight of available evidence, it is more likely than not that some or all of the deferred
tax assets will not be realized.

The Company provides reserves for potential payments of tax to various tax authorities related to uncertain tax positions and other issues. Reserves are based
on a determination of whether and how much of a tax benefit taken by the Company in its tax filing is more likely than not to be realized following resolution
of any potential contingencies present related to the tax benefit. Potential interest and penalties associated with such uncertain tax positions are recorded as
components of income tax expense. As at December 31, 2021 and December 31, 2020, the Company has not recorded any reserves for potential payments as
the Company has a history of losses and does not have any revenue from operations.

3.

Cash and cash equivalents:

Cash and cash equivalents consists of cash of $294 thousand ( December 31, 2020 ‑ $329  thousand),  deposits  in  high  interest  savings  accounts,  money  market
funds and accounts with original maturities less than 90 days totaling $38.820 million ( December 31, 2020 ‑ $117.064 million).

F- 12

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

4.

Prepaid expenses:

Prepaid research and development expenses
Other prepaid expenses

5.

Property and equipment:

December 31, 2021

Laboratory equipment
Computer hardware
Computer software
Office furniture
Leasehold improvements

December 31, 2020

Laboratory equipment
Computer hardware
Computer software
Office furniture
Leasehold improvements

6.

Right-of-use assets, operating leases:

Right-of-use assets, beginning of year
Additions to right-of-use assets
Right-of-use assets, end of year
Accumulated amortization
Right-of use assets, NBV

December 31,   
2021   

December 31, 
2020 

  $

  $

632    $
1,844     
2,476    $

622 
1,932 
2,554 

Cost   

369    $
198     
222     
140     
184     
1,113    $

Cost   

185    $
170     
222     
140     
184     
901    $

Accumulated
depreciation   

Net book value 

188    $
144     
222     
95     
141     
790    $

181 
54 
- 
45 
43 
323 

Accumulated
depreciation   

Net book value 

177    $
99     
174     
72     
118     
640    $

8 
71 
48 
68 
66 
261 

Year ended

December 31, 2021   

Year ended
December 31, 2020 

  $

  $

1,848    $
12     
1,860     
(1,395)    
465    $

1,837 
11 
1,848 
(923)
925 

  $

  $

  $

  $

F- 13

 
 
 
 
 
 
 
 
 
 
     
       
 
   
 
 
 
 
 
 
     
       
       
 
   
   
   
   
 
 
     
       
       
 
 
 
     
       
       
 
   
   
   
   
 
 
 
 
 
 
 
     
       
 
   
   
   
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

7.

Investments:

Investments consisted of the following as of December 31, 2021 and December 31, 2020:

Guaranteed Investment Certificate
Commercial notes

United States Treasury Bills

December 31, 2021

Cost   

Unrealized gain   

Market value 

20,016     
19,998     
40,014     

-     

-     

20,016 
19,998 
40,014 

December 31, 2020

Cost   

Unrealized gain   

Market value 

5,000     
5,000     

-     
-     

5,000 
5,000 

  $

  $

  $
  $

8.

Fair value measurements and financial instruments:

The fair value hierarchy establishes three levels to classify the inputs to valuation techniques used to measure fair value.

Level 1 ‑ inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities;

Level 2 ‑ inputs are quoted prices in markets that are not active, quoted prices for similar assets or liabilities in active markets, inputs other than quoted prices that
are observable for the asset or liability, or inputs that are derived principally from or corroborated by observable market data or other means; and

Level 3 ‑ inputs are unobservable (supported by little or no market activity).

The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs.

The following table presents the fair value of the Company’s financial instruments for the periods presented:

Assets

Money Market accounts
Money Market Funds
High interest savings accounts
Commercial notes
Guaranteed Investment Certificate

December 31,

2021   

Level 1   

Level 2   

Level 3

17,974    $
15,801     
5,045     
19,998     
20,016     
78,834    $

-    $
-     
-     
-     

-    $

17,974    $
15,801     
5,045     
19,998     
20,016     
78,834    $

- 
- 
- 
- 

- 

  $

  $

F- 14

 
 
 
 
 
 
 
 
 
 
 
 
     
       
       
 
   
     
 
 
   
      
      
  
 
 
 
 
 
 
 
     
       
       
 
 
 
   
      
      
  
 
 
 
 
 
 
 
 
 
 
 
 
     
       
       
       
 
 
     
       
       
       
 
   
   
   
   
     
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

Assets

Money Market accounts
Money Market Funds
High interest savings accounts
United States Treasury Bill
Government of Canada Treasury Bill

December 31,

2020   

Level 1   

Level 2   

Level 3

  $

  $

668    $
44,000     
48,397     
5,000     
23,999     
122,064    $

-    $
-     
-     
-     
-     
-    $

668    $
44,000     
48,397     
5,000     
23,999     
122,064    $

- 
- 
- 
- 
- 
- 

9.

Accrued liabilities:

Accrued liabilities as of December 31, 2021 and December 31, 2020 consisted of the following:

Accrued personnel related costs
Accrued research and development expenses
Other accrued expenses

10.

Lease liability

December 31,   
2021   

December 31, 
2020 

  $

  $

2,152    $
3,520     
344     
6,016    $

1,917 
1,932 
253 
4,102 

Aptose leases office space and lab space in San Diego, California. The lease for the office space expires on March 31, 2023 and can be extended for an additional 5
year period. The lease for our lab space expired on February 28, 2022 and has been renewed for a twelve month period. We lease office space in Toronto, Ontario,
Canada and the lease for this location expires on June 30, 2023 with an option to renew for another 5-year period. The Company has not included any extension
periods in calculating its right-to-use assets and lease liabilities. The Company also enters into leases for small office equipment.

Minimum payments, undiscounted, under our operating leases are as follows:

Years ending December 31,
2022
2023
Thereafter

  $

  $

470 
123 
- 
593 

F- 15

 
 
 
 
 
 
     
       
       
       
 
 
     
       
       
       
 
   
   
   
   
 
 
 
 
 
 
 
 
 
 
     
       
 
   
   
 
 
 
 
 
 
     
 
   
   
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

To  calculate  the  lease  liability,  the  lease  payments  in  the  table  above  were  discounted  over  the  remaining  term  of  the  leases  using  the  Company’s  incremental
borrowing rate as at January 1, 2019 for existing leases at the time of adopting the Topic 842,  and  for  new  leases  after  the  date  adoption,  as  at  the  date  of  the
execution date of the new lease. The following table presents the weighted average remaining term of the leases and the weighted average discount rate:

Weighted-average remaining term – operating leases (years)
Weighted-average discount rate – operating leases

Lease liability, current portion
Lease liability, long term portion
Lease liability, total

Operating lease costs and operating cash flows from our operating leases are as follows:

Operating lease cost

Operating cash flows from operating leases

11.

Share capital:

December 31, 
2021 
1.2 
5.37%   

December 31, 
2020 
2.1 
5.40%

459 
115 
574 

  $

  $

539 
535 
1,074 

Year ended

December 31, 2021   

Year ended
December 31, 2020 

515    $

555    $

530 

537 

  $

  $

  $

  $

The Company has authorized share capital of an unlimited number of common voting shares.

(a) Equity issuances:

(i) On November 4, 2021, the Effective date, the Company entered into an exclusive license agreement with Hanmi Pharmaceutical Co. Ltd. (Hanmi) for

global rights to its compound named HM43239.  Pursuant to the terms of this agreement, on December 14, 2021, the Company issued 3,235,548 Common
Shares as a partial upfront payment to Hanmi in consideration of the license and other rights granted for a total cost of $7.5 million. The number of
common shares issued is determined using the average market closing price of the common shares on the NASDAQ stock market over the five (5) trading
day period ending on the Effective Date. 

(ii) 2020 At‑The‑Market (“ATM”) Facility

On May 5, 2020, the Company entered into an equity distribution agreement with Piper Sandler and Canaccord Genuity acting as co-agents in connection
with the 2020 ATM Facility. Under the terms of the 2020 ATM Facility, the Company may, from time to time, sell Common Shares having an aggregate
offering value of up to $75 million through Piper Sandler and Canaccord Genuity on the Nasdaq Capital Market. During the year ended December 31,
2021, the Company issued 15,315 shares under this ATM Facility at an average price of $2.446 for gross proceeds of $37 thousand ($36 thousand net of
share issue costs). Costs associated with the proceeds consisted of a 3% cash commission.

(iii) July/August 2020 Confidentially Marketed Public Offering (CMPO)

On July 20, 2020 and August 10, 2020, the Company completed a confidentially marketed public offering through the issuance of 11,854,472 common
shares at a price of $5.25 per share for gross proceeds of $62.236 million (approximately $58.234 million net of share issue costs). Costs associated with
the proceeds consisted of a 6% cash commissions and share issue costs, which consisted of agent commission, legal and professional fees and listing fees.

(b) Loss per share:

Loss per common share is calculated using the weighted average number of common shares outstanding and is presented in the table below:

(in thousands)

Net loss
Weighted-average common shares – basic and diluted
Net loss per share – basic and diluted

F- 16

Year ended

December 31, 2021   

Year ended
December 31, 2020 

  $

  $

(65,354)   $
89,086     
(0.73)   $

(55,238)
81,837 
(0.67)

 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
  
   
  
   
   
 
 
 
 
 
     
       
 
 
     
       
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
       
 
   
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

The effect of any potential exercise of the Company’s stock options outstanding during the year ended December 31, 2021 and December 31, 2020 has been
excluded from the calculation of diluted loss per common share as it would be anti‑dilutive.

12.

Stock‑based compensation:

(a) Stock option plan and employee stock purchase plan

Effective June 1, 2021, the Company adopted a new stock incentive plan (New Incentive Plan) and an employee stock purchase plan (ESPP).

The New Incentive Plan authorizes the Board of Directors to administer the New Incentive Plan to provide equity‑based compensation in the form of stock
options, stock appreciation rights., restricted stock, restricted stock units and Dividend Equivalents.

The Corporation currently maintains its existing Share Option Plan and 2015 Stock Incentive Plan (2015 SIP). Effective June 1, 2021 no further grants will be
made under the Share Option Plan or 2015 SIP, though existing grants under the Share Option Plan will remain in effect in accordance with their terms.

The aggregate number of our common shares, no par value, that may be issued under all awards under the New Incentive Plan is (i) 6,343,242, plus (ii) any of
our common shares subject to any outstanding award under our prior plans that, after June 1, 2021, are not purchased or are forfeited or reacquired by us, or
otherwise not delivered to the participant due to termination, cancellation or cash settlement of such award subject to the share counting provisions of the New
Incentive Plan.

Under both the Share Option Plan and the New Incentive Plan, the exercise price of each option equals the closing trading price of the Company’s stock on the
day prior to the grant if the grant is made during the trading day or the closing trading price on the day of grant if the grant is issued after markets have closed.
Vesting is provided for at the discretion of the Board of Directors and the expiration of options is to be no greater than 10 years from the date of grant.

The Company uses the fair value based method of accounting for employee awards granted under both plans. The Company calculates the fair value of each
stock  option  grant  using  the  Black‑Scholes  option  pricing  model  at  the  grant  date.  The  stock‑based  compensation  cost  of  the  options  is  recognized  as
stock‑based compensation expense over the relevant vesting period of the stock options using an estimate of the number of options that will eventually vest.

The ESPP, which will be administered by the Board of Directors, allows eligible employees of the Company with an opportunity to purchase Common Shares
through accumulated payroll deductions up to a maximum 15% of eligible compensation. The ESPP will be implemented by consecutive offering periods with
a new offering period commencing on the first trading day on or after February 1 and August 1 each year, or on such other date as the Board of Directors will
determine, and continuing thereafter until terminated in accordance with the Plan. Unless the Board of Directors provides otherwise, the purchase price will be
equal to eighty‑five percent (85%) of the fair market value of a Common Share on the offering date or the exercise date, whichever is lower.

The maximum number of Common Shares which will be made available for sale under the ESPP will be 1,700,000 Common Shares.

The Company has not established a first offering period; there are no options outstanding under the ESPP as of December 31, 2021.

F- 17

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

Stock option transactions for the year ended December 31, 2021 and December 31, 2020, are summarized as follows:

Option numbers are in (000’s)

Outstanding, December 31, 2019
Granted
Exercised
Forfeited
Outstanding, December 31, 2020
Granted
Exercised
Forfeited
Outstanding, December 31, 2021
Exercisable, December 31, 2021
Vested and expected to vest, December 31, 2021

Weighted average

Options   

exercise price    

Weighted
average
remaining
contractual
life (years)

Aggregate
Intrinsic
Value

5,941    $
6,362     
(235)    
(126)    
11,942    $
4,659     
(82)    
(1,407)    
15,112    $
8,164    $
14,068    $

2.84     
6.81     
2.45     
4.50     
4.97     
3.84     
2.32     
5.38     
4.61     
4.50     
4.60     

6.6    $
5.3    $
6.5    $

96,117 
96,117 
96,117 

Aggregate intrinsic value represents the excess of the value of the closing stock price on the previous trading day of the respective balance sheet dates over the
exercise price of the stock options. Total intrinsic value of options exercised was $222 thousand for 2021 (2020 – $850 thousand).

As of December 31, 2021, there was $6.0 million of total unrecognized compensation cost related to non-vested stock options, which is expected to be recognized
over an estimated weighted-average period of 1.68 years.

The  following  table  presents  the  weighted  average  assumptions  that  were  used  in  the  Black‑Scholes  option  pricing  model  to  determine  the  fair  value  of  stock
options granted during the period, and the resultant weighted average fair values:

Risk-free interest rate
Expected dividend yield
Expected volatility
Expected life of options (years)
Grant date fair value

Year ended
December 31, 2021 

Year ended
December 31, 2020 

0.59%   
- 
81.8%   
5 
2.47 

  $

1.27%
- 
85.9%
5 
4.59 

  $

The  Company  uses  historical  data  to  estimate  the  expected  dividend  yield  and  expected  volatility  of  its  common  shares  in  determining  the  fair  value  of  stock
options. The expected life of the options represents the estimated length of time the options are expected to remain outstanding.

The following table presents the vesting terms of options granted in the period:

Option numbers are in (000’s)

Cliff vesting after one year anniversary
3 year vesting (50%-25%-25%)
4 year vesting (50%-16 2/3%-16 2/3%-16 2/3%)
Earlier of Performance criteria or 4 years
Total stock options granted in the year

F- 18

Year ended

December 31, 2021   
Number of options   

-     
430     
3,429     
800     
4,659     

Year ended
December 31, 2020 
Number of options 
300 
862 
5,200 
- 
6,362 

 
 
 
 
     
       
       
       
 
 
   
 
     
 
   
   
 
 
 
 
   
 
 
     
       
       
       
 
   
      
  
   
      
  
   
      
  
   
      
  
   
      
  
   
      
  
   
      
  
   
      
  
   
   
   
 
 
 
 
 
 
 
 
     
 
     
 
   
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
   
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

During the year ended December 31, 2021, the option agreements of one officer were modified as part of a separation and release agreement. Vested options of
1,679,169,  with  exercise  prices  ranging  from  $1.03  to  $7.44,  were  allowed  to  continue  to  be  exercisable  for  an  additional  12  month  period,  and  also  504,833
options that would have expired unvested, were allowed to continue to vest for a 12 month period. As there was no service requirement, during the year ended
December 31, 2021, the company recorded $945 thousand and $663 thousand additional compensation related to these modifications for the vested and unvested
options, respectively.

During the year ended December 31, 2021, the Company issued 800,000 performance stock option (PSO) to two officers of the Company. One officer received
400,000  PSOs,  of  which  200,000  PSOs  will  vest  in  tranches  connected  with  financing  events,  and  the  remaining  200,000  PSOs  will  vest  in  connection  with
licensing and partnering events. The other officer received 400,000 PSOs, of which 200,000 PSOs will vest in tranches connected to dose escalation trials and the
remaining 200,000 PSOs will vest in connection with expansion trials. If such performance triggers are not attained, such PSOs will vest on the fourth anniversary
of the grant. On November 11, 2021, the performance criteria connected with the financing events were met, and 200,000 PSOs were vested.

(b) Restricted share units

The  Company  has  a  stock  incentive  plan  (SIP)  pursuant  to  which  the  Board  may  grant  stock-based  awards  comprised  of  restricted  stock  units  or  dividend
equivalents to employees, officers, consultants, independent contractors, advisors and non-employee directors of the Company. Each restricted unit is automatically
redeemed for one common share of the Company upon vesting. The following table presents the activity under the SIP plan for the year ended December 31, 2021
and 2020 the units outstanding.

Outstanding, beginning of period
Granted
Vested
Outstanding, end of period

Year ended,
December 31, 2021

Year ended,
December 31, 2020

Number
(in thousands)

Weighted average
grant date fair

value   

Number
(in thousands)

-    $
-     
-     
-    $

-     
-     
-     
-     

40    $
645     
(685)    
-    $

Weighted
average grant
date fair value 
2.00 
7.32 
7.01 
- 

On March 10, 2020, the Company granted 645,000 restricted share units (RSUs) with a vesting term of three months. On May 5, 2020, the vesting term on the
RSUs was extended from three months to four months. On July 10, 2020, all of these restricted share units were vested and were redeemed for 645,000 common
shares.

On June 3, 2019, the Company granted 80,000 restricted share units (RSUs), 40,000 of which have a vesting term of three months and the balance have a vesting
term of one year. On May 5, 2020, the vesting term on the balance was extended from one year to one year and one month. On July 2, 2020, the remaining of these
restricted share units were vested and were redeemed for 40,000 common shares.

The grant date fair value of the RSUs was determined as the closing value of the common shares of the Company on the Nasdaq Stock Market on the date prior to
the date of grant.

F- 19

 
 
 
 
 
 
 
 
 
 
   
 
 
 
   
   
   
   
   
   
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

(c) Share-based payment expense

The Company recorded share-based payment expense related to stock options and RSUs as follows:

Research and development
General and administrative
Total

13.

Collaborative agreements:

Year ended

December 31, 2021   

Year ended
December 31, 2020 

  $

  $

3,789    $
9,160     
12,949    $

3,720 
17,718 
21,438 

The  Company  enters  into  research,  development  and  license  agreements  in  the  ordinary  course  of  business  where  the  Company  receives  research  services  and
rights to proprietary technologies. Milestone and royalty payments that may become due under various agreements are dependent on, among other factors, clinical
trials, regulatory approvals and ultimately the successful development of a new drug, the outcome and timing of which is uncertain.

On November 4, 2021, the Effective Date, the Company entered into an exclusive license agreement with Hanmi Pharmaceutical Co. Ltd. (Hanmi) for global rights
to its compound named HM43239.  In consideration of the license and other rights granted, Aptose made an upfront payment to Hanmi in the amount of $12.5
million, including $5.0 million in cash and $7.5 million in Aptose common shares (the “Aptose Shares”).   The number of Aptose Shares issued was determined
using the average market closing price of the Aptose Shares on the NASDAQ stock market over the five (5) trading day period ending on the Effective Date. 
Accordingly, Aptose has issued 3,235,548 shares to Hanmi.

Under the Company’s license agreement with Hanmi, the Company has maximum obligations for clinical development and global regulatory milestones totaling
$64.5 million for the first potential clinical indication of HM43239, $34 million for the second indication, and $29 million for the third Indication. The company
has maximum obligations for tiered global sales based milestones totaling $280 million. The Company also has an obligation for tiered royalty payments on global
sales of commercialized product. The timing of any milestone or royalty payments that may become due is not yet determinable.

Under the Company’s license agreement with CrystalGenomics for rights to CG-806, in all territories outside of the Republic of Korea and China, the Company
has obligations for development milestones of $16  million  related  to  the  initiation  of  Phase  2  and  pivotal  clinical  trials,  and  regulatory  milestones  totaling  $44
million. The Company also has an obligation to pay royalty payments on sales of commercialized product. The timing of any milestone or royalty payments that
may become due is not yet determinable.

On June  13,  2018,  the  Company  entered  into  a  license  agreement  with  CrystalGenomics  to  gain  an  exclusive  license  to  CG-806  in  China.  The  Company  has
potential future obligations of development milestones of $6 million related to approval of an Investigational New Drug (“IND”) and to the initiation of Phase 2
and pivotal clinical trials, and regulatory milestones totaling $20 million. The Company also has an obligation to pay sales milestones and royalty payments on
sales of commercialized product. The timing or likelihood of any milestone or royalty payments that may become due is not yet determinable.

On March 7, 2018, we entered into an exclusive global license agreement with Ohm Oncology (OHM), for the development, manufacture and commercialization
of APL-581, as well as related molecules from our dual bromodomain and extra-terminal domain motif (BET) protein and kinase inhibitor program. Under the
agreement, we will retain reacquisition rights to certain molecules, while OHM/LALS will have the rights to develop and sublicense all other molecules. We have
received  two  nominal  upfront  cash  payments  and  are  eligible  to  receive  up  to  $125  million  of  additional  payments  based  on  the  achievement  of  certain
development, regulatory and sales milestones, as well as significant royalties on future sales generated from the program, if any.

F- 20

 
 
 
 
 
 
 
 
 
     
       
 
   
 
 
 
 
 
 
 
 
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

14.

Income taxes:

(a)

Income taxes

For the years ended December 31, 2021 and 2020, the total comprehensive loss is as follows:

Loss attributed to US foreign operations
Loss attributed to Canadian operations
Income (loss) before income taxes

(b) Tax rate reconciliation

December 31,

2021   

December 31,
2020 

  $

  $

(52,447)   $
(12,907)    
(65,354)   $

(39,757)
(15,481)
(55,238)

Major items causing the Company’s income tax rate to differ from the statutory rate of approximately 26.5% ( December 31, 2020 – 26.5%) are as follows:

Net loss
Statutory Canadian corporate tax rate

Computed expected tax recovery
Non-deductible permanent differences
Change in valuation allowance
Foreign tax rate differential
Prior year true-up adjustments
Other

(c) Significant components of deferred taxes

Year ended
December 31, 2021 

Year ended
December 31, 2020 

  $

  $

  $

(65,354)   $
26.5%   

(17,319)   $
3,707 
15,274 

(683)    
(951)    
(28)    
  $
- 

(55,238)
26.5%

(14,638)
4,959 
10,383 
(428)
(230)
(46)
- 

The tax effects of temporary differences that give rise to significant portions of the unrecognized deferred tax assets are presented below:

Net operating losses carried forward
Research and development expenditures
Property, equipment, and other intangible assets
Research and development tax credits
Financing costs
Right-of-use assets
Total deferred tax assets
Valuation allowance
Net deferred tax asset

F- 21

December 31,

2021   

December 31,
2020 

49,286    $
5,032     
7,261     
4,202     
1,580     
40     
67,401     
(67,401)    
-    $

37,362 
5,032 
3,760 
3,597 
2,336 
40 
52,127 
(52,127)
- 

  $

  $

 
 
 
 
 
 
 
 
 
 
 
     
       
 
   
 
 
 
 
 
 
 
 
     
 
     
 
   
 
     
 
     
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
     
       
 
   
   
   
   
   
   
   
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

The valuation allowance at December 31, 2021 was primarily related to net operating loss carryforwards that, in the judgment of management, are not more-likely
than-not to be realized. In assessing the realizability of deferred tax assets, management considers whether it is more-likely than-not that all or some portion of the
deferred assets will not be realized. This ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the period in
which those deductible temporary difference become deductible. Based on the history of losses and projections for future taxable income, management believes
that it is not more-likely than-not that the Company will realize the benefits of these deductible temporary differences (e.g. deferred tax assets).

The Company has Canadian undeducted research and development expenditures, totaling $19.0 million that can be carried forward indefinitely. The Company also
has Canadian non‑refundable federal and provincial investment tax credits of approximately $3.3 million which are available to reduce future federal taxes payable
and begin to expire in 2022, as well as non‑refundable US research and development tax credits of approximately $1.8 million which are available to reduce future
US taxes payable and begin to expire in 2038.

In addition, the Company has Canadian non-capital loss carryforwards of $177.9 million. To the extent that the non-capital loss carryforwards are not used, they
begin to expire in 2026. The Company also has US non-capital loss carryforward of $0.9 million, To the extent that the non-capital loss carryforwards are not used,
they begin to expire in 2034.

The Company files income tax returns with Canada and its provinces and territories. Generally, we are subject to routine examinations by the Canada Revenue
Agency ("CRA"). Income tax returns filed with various provincial jurisdictions are generally open to examination for periods of four to five years subsequent to the
filing of the respective return.

The Company also files income tax returns for our U.S. operations and subsidiary with the U.S. federal and state tax jurisdictions. Generally, we are subject to
routine examination by taxing authorities in the U.S. jurisdictions. There are presently no examination of our U.S. federal and U.S. state returns. We believe that
our tax positions comply with the applicable tax law.

15.

Selected quarterly financial data (unaudited):

Selected financial data (unaudited) for the periods presented was as follows:

Revenue
Net loss
Basic and diluted loss per common share

Revenue
Net loss
Basic and diluted loss per common share

March 31,

2021   

June 30,

September 30,

2021   

2021   

December 31,
2021 

-    $
(16,227)    
(0.18)    

-    $
(13,470)    
(0.15)    

-    $
(11,333)    
(0.13)    

- 
(24,324)
(0.27)

March 31,

2020   

June 30,

September 30,

2020   

2020   

December 31,
2020 

-    $
(11,526)    
(0.15)    

-    $
(15,750)    
(0.21)    

-    $
(13,249)    
(0.15)    

- 
(14,713)
(0.17)

  $

  $

F- 22

 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
       
       
       
 
   
   
 
 
 
 
     
       
       
       
 
   
   
 
 
APTOSE BIOSCIENCES INC.
Notes to Consolidated Financial Statements
Year ended December 31, 2021 and 2020
(Tabular amounts in thousands of United States dollars, except as otherwise noted)

16.

Subsequent events

Subsequent to the year end, the Company issued 3,870,000 stock options to directors, officers, employees and consultants with an average exercise price of $1.34. 
The stock options vest 50% after one year and 16.67% on each of the next three anniversaries, except for 425,000 options which vest 50% after one year and 25%
on each of the next two anniversaries.

F-23

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Description of Securities Registered
Under Section 12 of the Exchange Act of 1934

Exhibit 4.1

The following description of our common shares, no par value per share, is a summary and does not purport to be complete. It is subject to and qualified in its
entirety by reference to our Articles of Incorporation, Arrangement and Amendment last amended on June 12, 2015 (the “Articles”) and our Amended By-Law No. 2 (the
“Bylaws”), each of which is incorporated by reference as an exhibit to the Annual Report on Form 10-K of which this Exhibit is a part. We encourage you to read our
Articles and our Bylaws for additional information.

Authorized Capital

Our authorized share capital consists of an unlimited number of common shares.

Voting Rights

Holders of common shares will be entitled to receive notice of and to attend all meetings of the shareholders.  Holders of common shares are entitled to one vote
per share on all matters voted on by the shareholders, including the election of directors. Our common shares do not have cumulative voting rights.  Each director is elected
by a plurality of the votes cast. However, in an uncontested election, if a nominee for director receives a greater number of votes “withheld” from his or her election than
votes “for” such election, the nominee will be considered not to have received the support of the shareholders, even though duly elected as a matter of corporate law.  Such a
nominee will be expected to provide forthwith his or her resignation to the board, effective on acceptance by the board. Unless special circumstances apply, the board will
accept the resignation. Within 90 days following the applicable meeting of the shareholders, the board will determine whether to accept or reject the resignation offer that
has been submitted. Following the board’s decision on the resignation, the board will promptly disclose, via press release, its decision (including the reasons for rejecting
the resignation offer, if applicable).

Except for the election of directors, or as otherwise required by the Articles, the Bylaws or applicable laws and regulations, all questions properly before a meeting

of shareholders will be decided by a majority of the votes cast on the question.

Dividend Rights and Dividend Policy

The holders of common shares are entitled, at the discretion of our board of directors, to receive out of any or all of our assets properly available for the payment of
dividends, any dividend declared by the board of directors and payable by us on our common shares. Any dividend unclaimed after a period of six years from the date on
which the same has been declared to be payable shall be forfeited and shall revert to us.  We and our subsidiaries are, and may become, parties to agreements pursuant to
which we borrow money, and certain covenants in these agreements may limit our ability to pay dividends or other distributions with respect to the common shares or to
repurchase common shares.

We  have  not  paid  any  dividends  since  our  incorporation.  At  the  discretion  of  our  board  of  directors,  we  will  consider  paying  dividends  in  the  future  as  our
operational circumstances may permit, having regard to, among other things, our earnings, cash flow and financial requirements. It is the current policy of our board of
directors to retain all earnings to finance our business plan.

Liquidation Rights

The holders of common shares will participate on a pro rata basis in any distribution of our remaining property upon our liquidation, dissolution or winding-up or

any other return of capital or distribution of our assets among our shareholders for the purpose of winding up our affairs.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other Rights and Preferences

Our common shares have no sinking fund or redemption provisions or preemptive, conversion or exchange rights.

Fully Paid Shares

Our outstanding common shares are, and any newly issued common shares will be, fully paid and non-assessable.

 
 
 
 
 
 
Name

State/Jurisdiction of Incorporation

Aptose Biosciences U.S. Inc.
NuChem Pharmaceuticals Inc.

Delaware
Ontario, Canada

Subsidiaries of the Registrant

Exhibit 21.1

 
 
 
 
 
 
 
 
Exhibit 23.1

KPMG LLP
100 New Park Place, Suite 1400
Vaughan, ON L4K 0J3
Tel 905-265 5900
Fax 905-265 6390
www.kpmg.ca

The Board of Directors
Aptose Biosciences Inc.

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the registration statement (No. 333- 235730) on Form S-3 and the registration statements (No. 333-257446, No. 333-
228794, and No. 333-205158) on Form S-8 of our report dated March 22, 2022, with respect to the consolidated financial statements of Aptose Biosciences Inc. which
comprise the consolidated statements of financial position as at December 31, 2021 and December 31, 2020, the related consolidated statements of loss and comprehensive
loss, changes in shareholders’ equity and cash flows for each of the years in the two-year period ended December 31, 2021, and the related notes, which report appears in
the December 31, 2021 annual report on Form 10-K of Aptose Biosciences Inc.

/s/ KPMG LLP

Chartered Professional Accountants, Licensed Public Accountants
March 22, 2022
Vaughan, Canada

KPMG LLP, an Ontario limited liability partnership and member firm of the KPMG global organization of independent member firms affiliated with KPMG International
Limited, a private English company limited by guarantee. KPMG Canada provides services to KPMG LLP.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.1

I, William G. Rice, certify that:

1.

I have reviewed this Annual Report on Form 10-K of Aptose Biosciences Inc.;

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 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 fourth fiscal quarter

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 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: March 22, 2022

/s/ William G. Rice
Name: William G. Rice, Ph.D.
Title: President and Chief Executive Officer

 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.2

I, Jotin Marango, certify that:

1.

I have reviewed this Annual Report on Form 10-K of Aptose Biosciences Inc.;

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 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 fourth fiscal quarter

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 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: March 22, 2022

/s/ Jotin Marango
Name: Jotin Marango
Title: Senior Vice President and Chief Financial
Officer

 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, William G. Rice, the President and Chief

Executive Officer of Aptose Biosciences Inc. (the “Company”), hereby certify that, to my knowledge:

1.  The Annual Report on Form 10-K for the year ended December 31, 2021 (the “Report”) of the Company fully complies with the requirements of Section

13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

2.  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 22, 2022

Exhibit 32.1

/s/ William G. Rice
Name: William G. Rice, Ph.D.
Title: President and Chief Executive Officer

 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Jotin Marango, the Senior Vice President and

Chief Financial Officer of Aptose Biosciences Inc. (the “Company”), hereby certify that, to my knowledge:

1.  The Annual Report on Form 10-K for the year ended December 31, 2021 (the “Report”) of the Company fully complies with the requirements of Section

13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

2.  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 22, 2022

Exhibit 32.2

/s/ Jotin Marango
Name: Jotin Marango
Title: Senior Vice President and Chief Financial
Officer