The following discussion of our financial condition and results of operations
should be read in conjunction with the Condensed Consolidated Financial
Statements and the related notes appearing elsewhere in this report. Some of the
information contained in this discussion and analysis and set forth elsewhere in
this report, including information with respect to our plans and strategy for
our business, includes forward-looking statements, based on current expectations
and related to future events and our future financial and operational
performance, that involve risks and uncertainties. You should review the
discussion above under the heading "Risk Factor Summary," the risk factors
detailed further in Item 1A, "Risk Factors" of Part I of our Annual Report on
Form 10-K for the year ended December 31, 2020, and, if applicable, those
included under Part II, Item 1A of this Quarterly Report on Form 10-Q, for a
discussion of important factors that could cause actual results to differ
materially from the results described in or implied by the forward-looking
statements contained in the following discussion and analysis. As used
throughout this report, the terms "the Company," "we," "us," and "our" refer to
the business of Curis, Inc. and its wholly owned subsidiaries, except where the
context otherwise requires, and the term "Curis" refers to Curis, Inc.
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Overview
We are a biotechnology company focused on the development of first-in-class and
innovative therapeutics for the treatment of cancer.
We conduct our research and development programs both internally and through
strategic collaborations. Our clinical stage drug candidates are:
•CA-4948, an orally-available small molecule inhibitor of Interleukin-1
receptor-associated kinase 4, or IRAK4, which is currently undergoing testing in
a Phase 1/2 open-label dose escalating clinical trial in patients with
non-Hodgkin lymphomas, including those with Myeloid Differentiation Primary
Response Protein 88, or MYD88 alterations. We reported preliminary clinical data
from the study in December 2020. The trial was amended to include a combination
study of CA-4948 and ibrutinib, a BTK inhibitor, in patients with non-Hodgkin
lymphomas for which we enrolled the first patient in February 2021. We expect to
provide initial data from the combination study in the first half of 2022. We
are also conducting a separate Phase 1/2 open-label, single arm dose escalating
and expansion trial in patients with acute myeloid leukemia, or AML, and
myelodysplastic syndromes, or MDS, and announced preliminary clinical data from
this study in December 2020. The study was amended in April 2021 to include dose
escalation cohorts of CA-4948 in combination with azacitidine or venetoclax. In
April 2021, CA-4948 was granted Orphan Drug Designation for the treatment of AML
and MDS by the U.S. Food and Drug Administration, or FDA. In June 2021, we
reported updated preliminary clinical data from the Phase 1/2 study in patients
with AML or MDS and announced the recommended Phase 2 dose for monotherapy dose
expansion.
•CI-8993, a monoclonal antibody designed to antagonize the V-domain Ig
suppressor of T cell activation, or VISTA signaling pathway. In June 2020, we
announced the FDA had cleared our Investigational New Drug, or IND, application
for CI-8993. In September 2020, we began enrollment in our Phase 1 trial of
CI-8993 in patients with solid tumors. We have an option to license CI-8993 from
ImmuNext, Inc., or ImmuNext.
Our pipeline also includes the following:
•Fimepinostat, a small molecule that potently inhibits the activity of histone
deacetylase, or HDAC, and phosphotidyl-inositol 3 kinase, or PI3 kinase enzymes,
which has been granted Orphan Drug Designation and Fast Track Designation for
the treatment of diffuse large B-cell lymphoma, or DLBCL, by the FDA in April
2015 and May 2018, respectively. In 2019, we began enrollment in a Phase 1
combination study with venetoclax in DLBCL patients, including patients with
translocations in both MYC and the BCL2 gene, also referred to as double-hit
lymphoma, or high-grade B-cell lymphoma, or HGBL. We reported preliminary
clinical data from this combination study in December 2019. In March 2020, we
announced that although we observed no significant drug-drug interaction in our
Phase 1 study of fimepinostat in combination with venetoclax, we did not see an
efficacy signal that would warrant continuation of the study. Accordingly, no
further patients will be enrolled in this study. We are currently evaluating
future studies for fimepinostat.
•CA-170, a small molecule antagonist of VISTA and PDL1, for which we announced
initial data from a clinical study in patients with mesothelioma in conjunction
with the Society of Immunotherapy of Cancer conference in November 2019. Based
on this data, no further patients will be enrolled in the study. We are
currently evaluating future studies for CA-170.
•CA-327, a small molecule antagonist of PDL1 and TIM3, which is a pre-IND, stage
oncology drug candidate.
We are party to a collaboration with Genentech Inc., or Genentech, a member of
the Roche Group, under which F. Hoffmann-La Roche Ltd, or Roche and Genentech
are commercializing Erivedge® (vismodegib), a first-in-class orally administered
small molecule Hedgehog signaling pathway antagonist. Erivedge is approved for
the treatment of advanced basal cell carcinoma, or BCC.
In January 2015, we entered into an exclusive collaboration agreement focused on
immuno-oncology and selected precision oncology targets with Aurigene Discovery
Technologies Limited, or Aurigene, which was amended in September 2016 and
February 2020. As of June 30, 2021, we have licensed four programs under the
Aurigene collaboration:

1.IRAK4 Program - a precision oncology program of small molecule inhibitors of
IRAK4. The development candidate is CA-4948.
2.PD1/VISTA Program - an immuno-oncology program of small molecule antagonists
of PD1 and VISTA immune checkpoint pathways. The development candidate is
CA-170.
3.PD1/TIM3 Program - an immuno-oncology program of small molecule antagonists of
PD1 and TIM3 immune checkpoint pathways. The development candidate is CA-327.
4.In March 2018, we exercised our option to license a fourth program, which is
an immuno-oncology program.
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In addition, we are party to an option and license agreement with ImmuNext.
Pursuant to the terms of the option and license agreement, we have an option,
exercisable for a specified period as set forth in the option and license
agreement, to obtain an exclusive license to develop and commercialize certain
VISTA antagonizing compounds, including ImmuNext's lead compound, CI-8993, and
products containing these compounds in the field of oncology.
Based on our clinical development plans for our pipeline, we intend to
predominantly focus our available resources on the continued development of
CA-4948, in collaboration with Aurigene, and CI-8993, in collaboration with
ImmuNext, in the near term.
Liquidity
Since our inception, we have funded our operations primarily through private and
public placements of our equity securities, license fees, contingent cash
payments, research and development funding from our corporate collaborators,
debt financings and the monetization of certain royalty rights. We have never
been profitable on an annual basis and have an accumulated deficit of $1.1
billion as of June 30, 2021. For the six months ended June 30, 2021, we incurred
a net loss of $20.8 million and used $19.8 million of cash in operations. We
expect that our $160.7 million cash, cash equivalents and investments as of June
30, 2021 should enable us to maintain our planned operations into 2024. We have
based this assessment on assumptions that may prove to be wrong, and we could
exhaust our available capital resources sooner than we expect.
We will need to generate significant revenues to achieve profitability, and do
not expect to achieve profitability in the foreseeable future, if at all. If
sufficient funds are not available, we will have to delay, reduce the scope of,
or eliminate some of our research and development programs, including related
clinical trials and operating expenses, potentially delaying the time to market
for or preventing the marketing of any of our product candidates, which could
adversely affect our business prospects and our ability to continue our
operations, and would have a negative impact on our financial condition and
ability to pursue our business strategies. In addition, we may seek to engage in
one or more strategic alternatives, such as a strategic partnership with one or
more parties, the licensing, sale or divestiture of some of our assets or
proprietary technologies or the sale of our company, but there can be no
assurance that we would be able to enter into such a transaction or transactions
on a timely basis or on terms favorable to us, or at all.
COVID-19 Pandemic
The COVID-19 pandemic has spread worldwide, causing many governments to
implement measures to slow the spread of the outbreak through quarantines,
strict travel restrictions, heightened border scrutiny, and other measures. The
outbreak and government measures taken in response have had a significant
impact, both direct and indirect, on businesses and commerce. While the COVID-19
pandemic has had adverse effects on our business and we expect the outbreak to
have an adverse effect on our business, financial conditions and results of
operations in the future, we are unable to predict the extent or nature of the
future progression of the COVID-19 pandemic or its effects on our business and
operations at this time.
We have enrolled, and will seek to enroll, cancer patients in clinical trials at
sites located both in the United States and internationally. Many of our
clinical trial sites have imposed restrictions as a result of the COVID-19
pandemic, which have had and may continue to have a negative impact on our
ability to conduct our clinical trials. We have encountered and may continue to
face difficulties recruiting and retaining patients in our ongoing and planned
clinical trials to the extent patients are affected by the virus or are fearful
of visiting or traveling to our clinical trial sites because of the outbreak. In
addition, we do not currently know the duration or to what degree medical
facilities, including our clinical trial sites, will continue to be impacted by
the pandemic. For example, all of our clinical trial sites for our ongoing Phase
1/2 clinical trial for CA-4948 in patients with non-Hodgkin lymphomas, including
those with MYD88 alterations, are at large academic research hospitals that have
imposed restrictions on entry which have in some instances prohibited, and in
other instances may potentially prohibit in the future, clinical trial monitors
and patients from entering the trial sites. We are actively working with our
clinical trial sites to follow FDA guidelines for conducting clinical trials
during the COVID-19 pandemic, including performing remote monitoring to the
extent possible and arranging for the shipment of medicine directly from the
clinical trial site to patients who are enrolled in our trials, if required;
however, there is no assurance such arrangements will be successful. As a
result, further enrollment in our ongoing clinical trial for CA-4948 in patients
with non-Hodgkin lymphomas, including those with MYD88 alterations, has been
delayed and may continue to be delayed and patients currently enrolled in the
trial may cease treatment due to the restrictions described above or fear of
visiting or inability to visit our trial sites. As a result, enrollment in this
trial has been slower than expected and the timeline of this trial has been
delayed and may continue to be delayed. In addition, in July 2020, we commenced
enrollment in our Phase 1 clinical trial of CA-4948 in patients with AML and
MDS. Clinical trial sites for this study have also imposed and may continue to
impose restrictions similar to those described above. As a result, we may not be
able to enroll this trial on our planned timeline, which would cause a delay in
the overall timeline for this trial. Similarly, enrollment in and the overall
timeline of our combination study of CA-4948 and ibrutinib, for which we
commenced enrollment in February 2021, and our Phase 1 clinical trial for
CI-8993, for which we commenced enrollment in September 2020, have
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been delayed and may continue to be delayed due to the factors discussed above.
To the extent clinical trial sites are slowed down or closed to enrollment in
our ongoing and planned clinical trials, this could also have a material adverse
impact on our clinical trial plans and timelines. These restrictions may also
impact our ability to collect patient data in a timely fashion. In addition, we
do not know whether and to what extent potential exposure to COVID-19 of
patients in our clinical trials could impact the efficacy of CA-4948 or CI-8993.
The response to the COVID-19 pandemic may redirect resources of regulators in a
way that would adversely impact our ability to progress regulatory approvals. In
addition, we may face impediments to regulatory meetings and approvals relating
to our clinical trials due to measures intended to limit in-person interactions.
We and our collaborators, third-party contract manufacturers, contract research
organizations and clinical sites may experience delays or disruptions in supply
and release of product candidates and/or procuring items that are essential for
our research and development activities, including, for example, raw materials
used in the manufacturing of our product candidates, basic medical and
laboratory supplies used in our clinical trials or preclinical studies or
animals that are used for preclinical testing, in each case, for which there may
be shortages because of ongoing efforts to address the outbreak. While we
believe that we currently have sufficient supply of our product candidates to
continue our ongoing clinical trials, some of our product candidates, or
materials contained therein, come from facilities located in areas impacted by
COVID-19, including India, China, and Europe. In addition, any disruptions could
impact the supply, manufacturing or distribution of Erivedge, and sales of
Erivedge may be negatively impacted by a decrease in new prescriptions as a
result of a decline in patient medical visits due to the COVID-19 pandemic,
which has had and could continue to have a negative impact on the amount and
timing of any royalty revenue we may receive from Genentech related to Erivedge.
There is no guarantee that the COVID-19 pandemic, or any potential future
outbreak, would not impact our supply chain, which could have a material adverse
impact on our clinical trial plans and business operations.
We experienced delays in closing down our clinical trial sites related to our
fimepinostat and CA-170 trials due to restrictions on non-essential workers
imposed at those sites in response to COVID-19, which delayed the winding down
of these trials.
Any negative impact that the COVID-19 pandemic has on the ability of our
suppliers to provide materials for our product candidates or on recruiting or
retaining patients in our clinical trials could cause costly delays to clinical
trial activities, which could adversely affect our ability to obtain regulatory
approval for and to commercialize our product candidates, increase our operating
expenses, and have a material adverse effect on our financial results.
Additionally, the pandemic has already caused significant disruptions in the
financial markets, and may continue to cause such disruptions, which could
impact our ability to raise additional funds and has also impacted, and may
continue to impact, the volatility of our stock price and trading in our stock.
Moreover, the pandemic has significantly impacted economies worldwide, which
could result in adverse effects on our business and operations. We cannot be
certain what the overall impact of the COVID-19 pandemic will be on our business
and it has had and may continue to have an adverse effect on our business,
financial condition, results of operations, and prospects.
Key Drivers
We believe that near term key drivers to our success will include:
•our ability to successfully plan, finance and complete current and planned
clinical trials for CA-4948 and CI-8993, as well as for such clinical trials to
generate favorable data; and
•our ability to raise additional financing, when required, to fund operations.
In the longer term, a key driver to our success will be our ability, and the
ability of any current or future collaborator or licensee, to successfully
develop and commercialize drug candidates.
Our Collaborations and License Agreements
For information regarding our collaboration and license agreements, refer to
Note 9, Research and Development Collaborations, in the accompanying Notes to
the Condensed Consolidated Financial Statements included in Item 1 of Part I of
this Quarterly Report on Form 10-Q and Note 11, Research and Development
Collaborations, in Item 8 of our Annual Report on Form 10-K for the year ended
December 31, 2020 as filed with the Securities and Exchange Commission, or SEC,
on March 16, 2021.
Financial Operations Overview

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General. Our future operating results will largely depend on the progress of
drug candidates currently in our research and development pipeline. The results
of our operations will vary significantly from year to year and quarter to
quarter and depend on, among other factors, the cost and outcome of any
preclinical development or clinical trials then being conducted. For a
discussion of our liquidity and funding requirements, see "Liquidity" and
"Liquidity and Capital Resources - Funding Requirements".
Liability Related to the Sale of Future Royalties. In connection with the
termination and repayment in full of our prior loan with HealthCare Royalty
Partners, III, L.P., or HealthCare Royalty, we and Curis Royalty entered into
the royalty interest purchase agreement, or Oberland Purchase Agreement, with
entities managed by Oberland Capital Management, LLC, or the Purchasers. Upon
closing of the Oberland Purchase Agreement, Curis Royalty received an upfront
purchase price of $65.0 million from the Purchasers, approximately $33.8 million
of which was used to pay off the remaining loan principal to HealthCare Royalty,
and $3.7 million of which was used to pay transaction costs, including $3.4
million to HealthCare Royalty in accrued and unpaid interest and prepayment fees
under the loan, resulting in net proceeds of $27.5 million. Curis Royalty will
also be entitled to receive milestone payments of (i) $17.2 million if the
Purchasers and Curis Royalty receive aggregate royalty payments pursuant to the
Oberland Purchase Agreement in excess of $18.0 million during the calendar year
2021, subject to certain exceptions, and (ii) $53.5 million if the Purchasers
receive payments pursuant to the Oberland Purchase Agreement in excess of $117.0
million on or prior to December 31, 2026, which milestone payments may each be
paid, at the option of the Purchasers, in a lump sum in cash or out of the
Purchaser's portion of future payments under the Oberland Purchase Agreement.
For a discussion of the Oberland Purchase Agreement, see "Liquidity and Capital
Resources - Royalty Interest Purchase Agreement".
Revenue. We do not expect to generate any revenues from our direct sale of
products for several years, if ever. Substantially all of our revenues to date
have been derived from license fees, research and development payments, and
other amounts that we have received from our strategic collaborators and
licensees, including royalty payments. Since the first quarter of 2012, we have
recognized royalty revenues related to Genentech's sales of Erivedge and we
expect to continue to recognize royalty revenue in future quarters from
Genentech's sales of Erivedge in the U.S. and Roche's sales of Erivedge outside
of the U.S. However, a portion of our royalty and royalty-related revenues under
our collaboration with Genentech will be paid to the Purchasers, pursuant to the
Oberland Purchase Agreement. The Oberland Purchase Agreement will terminate upon
the earlier to occur of (i) the date on which Curis Royalty's rights to receive
the Purchased Receivables owed by Genentech under the Genentech collaboration
agreement have terminated in their entirety and (ii) the date on which payment
in full of the put/call price is received by the Purchasers pursuant to the
Purchasers' exercise of their put option or Curis Royalty's exercise of its call
right. For additional information regarding the terms and termination provisions
of this agreement, see Note 8, Liability Related to the Sale of Future
Royalties, in the accompanying Notes to the Condensed Consolidated Financial
Statements included in Item 1 of Part I of this Quarterly Report on Form 10-Q.
We could receive additional milestone payments from Genentech, provided that
contractually specified development and regulatory objectives are met. Also, we
could receive milestone payments from the Purchasers, provided that
contractually specified royalty payment amounts are met within applicable time
periods. Our only source of revenues and/or cash flows from operations for the
foreseeable future will be royalty payments that are contingent upon the
continued commercialization of Erivedge under our collaboration with Genentech,
and contingent cash payments for the achievement of clinical, development and
regulatory objectives, if any, that are met, under our collaboration with
Genentech. Our receipt of additional payments under our collaboration with
Genentech cannot be assured, nor can we predict the timing of any such payments,
as the case may be.
Cost of Royalty Revenues. Cost of royalty revenues consists of all expenses
incurred that are associated with royalty revenues that we record as revenues in
our Condensed Consolidated Statements of Operations and Comprehensive Loss.
These costs currently consist of payments we are obligated to make to university
licensors on royalties that Curis Royalty receives from Genentech on net sales
of Erivedge. In all territories other than Australia, our obligation is equal to
5% of the royalty payments that we receive from Genentech for a period of 10
years from the first commercial sale of Erivedge, which occurred in February
2012 in the U.S.
Research and Development. Research and development expense consists of costs
incurred to develop our drug candidates. These expenses consist primarily of:
•salaries and related expenses for personnel, including stock-based compensation
expense;
•costs of conducting clinical trials, including amounts paid to clinical
centers, clinical research organizations and consultants, among others;
• other outside service costs including costs of contract manufacturing;
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•sublicense payments;
•the costs of supplies and reagents;
•occupancy and depreciation charges;
•certain payments that we make under our collaboration agreements, including,
for example, semi-annual payments, option exercise fees and milestone payments;
•payments that we are obligated to make to certain third-party university
licensors upon our receipt of payments from Genentech related to the achievement
of clinical development and regulatory objectives under our collaboration
agreement; and
•internal and external costs of complying with the requirements of the FDA or
another regulatory authority.
We expense research and development costs as incurred. We are currently
incurring research and development costs under our Hedgehog signaling pathway
antagonist collaboration with Genentech related to the maintenance of
third-party licenses to certain background technologies.
Research and development activities are central to our business model. Product
candidates in later stages of clinical development generally have higher
development costs than those in earlier stages, primarily due to the increased
size and duration of later-stage clinical trials. As a result, we expect that
our research and development expenses will increase substantially over the next
several years as we conduct our clinical trials of CA-4948 and CI-8993; prepare
regulatory filings for our product candidates; continue to develop additional
product candidates; and potentially advance our product candidates into later
stages of clinical development.
The successful development and commercialization of our product candidates is
highly uncertain. At this time, we cannot reasonably estimate or know the
nature, timing and costs of the efforts that will be necessary to complete the
preclinical and clinical development of any of our product candidates. This
uncertainty is due to the numerous risks and uncertainties associated with
product development and commercialization, including the uncertainty of:
•our ability to successfully enroll our current and future clinical trials and
our ability to initiate future clinical trials, which has been and may continue
to be negatively impacted by the COVID-19 pandemic and responsive measures
relating thereto;
•the scope, quality of data, rate of progress and cost of clinical trials and
other research and development activities undertaken by us or our collaborators;
•the results of future preclinical studies and clinical trials;
•the cost and timing of regulatory approvals and maintaining compliance with
regulatory requirements;
•the cost and timing of establishing sales, marketing and distribution
capabilities;
•the cost of establishing clinical and commercial supplies of our drug
candidates and any products that we may develop;
•the effect of competing technological and market developments; and
•the cost and effectiveness of filing, prosecuting, defending and enforcing any
patent claims and other intellectual property rights.
Any changes in the outcome of any of these variables with respect to the
development of our product candidates could mean a significant change in the
costs and timing associated with the development of these product candidates.
For example, if the FDA or another regulatory authority were to delay our
clinical trials or require us to conduct clinical trials or other testing beyond
those that we currently expect, or if we experience significant delays in
enrollment in any of our clinical trials, we could be required to expend
significant additional financial resources and time to complete clinical
development of that product candidate. We may never obtain regulatory approval
for any of our product candidates. If we do obtain regulatory approval for our
product candidates, drug commercialization will take several years and millions
of dollars in development costs.
A further discussion of some of the risks and uncertainties associated with
completing our research and development programs on schedule, or at all, and
some consequences of failing to do so, are set forth under Item 1A, "Risk
Factors" of Part I of our Annual Report on Form 10-K for the year ended December
31, 2020.
General and Administrative. General and administrative expense consists
primarily of salaries, stock-based compensation expense and other related costs
for personnel in executive, finance, accounting, business development, legal,
information technology, corporate communications and human resource functions.
Other costs include facility costs not otherwise included
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in research and development expense, insurance, and professional fees for legal,
patent and accounting services. Patent costs include certain patents covered
under collaborations, a portion of which is reimbursed by collaborators and a
portion of which is borne by us.
Critical Accounting Policies and Estimates
The preparation of our consolidated financial statements in conformity with
accounting principles generally accepted in the United States requires that we
make estimates and assumptions that affect the reported amounts and disclosure
of certain assets and liabilities at our balance sheet date. Such estimates and
judgments include the carrying value of property and equipment and intangible
assets, revenue recognition, the value of certain liabilities, debt
classification and stock-based compensation. We base our estimates on historical
experience and on various other factors that we believe to be appropriate under
the circumstances, the results of which form the basis for making judgments
about the carrying value of assets and liabilities that are not readily apparent
from other sources. Actual results may differ from these estimates under
different assumptions or conditions.
During the six months ended June 30, 2021, there were no material changes to our
critical accounting policies and estimates as reported in our Annual Report on
Form 10-K for the year ended December 31, 2020, which was filed with the SEC on
March 16, 2021.
Results of Operations
Three and Six Months Ended June 30, 2021 and June 30, 2020

The following table summarizes our results of operations for the three and six months ended June 30, 2021 and 2020:



                                            For the Three Months Ended                Percentage                    For the Six Months Ended                  Percentage
                                                     June 30,                          Increase                             June 30,                           Increase
                                              2021                 2020               (Decrease)                    2021                    2020              (Decrease)
                                                  (in thousands)                                                         (in thousands)
Revenues, net:                         $         2,286          $  2,360                        (3) %       $       4,475               $   5,068                     (12) %
Costs and expenses:
Cost of royalty revenues                           116               122                        (5) %                 225                     247                      (9) %
Research and development                         8,753             5,282                        66  %              15,510                  12,754                      22  %
General and administrative                       4,067             2,386                        70  %               8,190                   5,980                      37  %
Other expense, net                                 188             1,278                       (85) %               1,315                   2,504                     (47) %
Net loss                               $       (10,838)         $ (6,708)                       62  %       $     (20,765)              $ (16,417)                     26  %


Revenues. Total revenues are summarized as follows:



                                      For the Three Months Ended                Percentage                For the Six Months Ended                Percentage
                                               June 30,                          Increase                         June 30,                         Increase
                                        2021                 2020               (Decrease)                  2021                2020              (Decrease)
                                            (in thousands)                                                     (in thousands)
Revenues, net:
Royalties                         $        2,348          $  2,446                        (4) %       $       4,535          $ 4,961                       (9) %
Other revenue                                  1                 -                       100  %                   1              211                     (100) %
Contra revenue, net                          (63)              (86)                      (27) %                 (61)            (104)                     (41) %
Total revenues, net               $        2,286          $  2,360                        (3) %       $       4,475          $ 5,068                      (12) %


Total revenues, net of $2.3 million decreased by 3% for the three months ended
June 30, 2021 as compared to the same period in 2020. The decrease is driven by
decreased royalty revenues arising from Genentech and Roche's net sales of
Erivedge during the current year period as compared to the prior year period.
Total revenues, net of $4.5 million decreased by 12% for the six months ended
June 30, 2021 as compared to the same period in 2020. The decrease was primarily
due to the inclusion of a milestone payment from an out-licensed technology that
occurred in the first quarter of 2020 for which there was no such amount in
2021.
Cost of Royalty Revenues. Cost of royalty revenues decreased by 5% and 9% for
the three and six months ended June 30, 2021 as compared to the same period in
2020, respectively, which is consistent with the decrease in royalty revenue. We
are
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obligated to make payments to two university licensors on royalties that Curis
Royalty earns from Genentech on net sales of Erivedge.
Research and Development Expenses. The following table summarizes our research
and development expenses incurred during the periods indicated:

                                         For the Three Months Ended                Percentage                 For the Six Months Ended               Percentage
                                                  June 30,                          Increase                          June 30,                        Increase
                                           2021                 2020               (Decrease)                  2021                2020              (Decrease)
                                               (in thousands)                                                      (in thousands)

Direct research and development $ 5,473 $ 3,336

                             $       9,741          $  8,619
expenses                                                                                     64  %                                                            13  %
Employee related expenses                     2,788             1,434                        94  %               4,851             3,180                      53  %
Facilities, depreciation and other              492               512                                              918               955
expenses                                                                                     (4) %                                                            (4) %
Total research and development
expenses                             $        8,753          $  5,282                        66  %       $      15,510          $ 12,754                      22  %



Research and development expenses were $8.8 million for the three months ended
June 30, 2021 as compared to $5.3 million in the same period in 2020, an
increase of approximately $3.5 million, or 66%. Direct research and development
expenses increased by $2.1 million for the three months ended June 30, 2021 as
compared to the same period in 2020. The increase in direct research and
development expenses for the quarter is primarily attributable to increased
clinical and manufacturing costs for our programs. Additionally, employee
related costs increased by $1.4 million, primarily attributable to increased
stock compensation and personnel costs as a result of additional headcount.

Research and development expenses were $15.5 million for the six months ended
June 30, 2021 as compared to $12.8 million in the same period in 2020, an
increase of approximately $2.8 million, or 22%. Direct research and development
expenses increased by $1.1 million for the six months ended June 30, 2021 as
compared to the same period in 2020. The increase in direct research and
development expenses for the quarter is primarily attributable to increased
clinical and manufacturing costs for our programs. The increase in costs is
offset by the upfront license fee expense from our option and license agreement
with ImmuNext that occurred during the first quarter of 2020. Additionally,
employee related costs increased by $1.7 million, primarily attributable to
increased stock compensation and personnel costs as a result of additional
headcount.

We expect that a majority of our research and development expenses for the
foreseeable future will be incurred in connection with our efforts to advance
our programs, including clinical and preclinical development costs,
manufacturing, option exercise fees, and potential milestone payments upon
achievement of certain milestones.
General and Administrative Expenses. General and administrative expenses are
summarized as follows:

                                           For the Three Months Ended                Percentage                For the Six Months Ended               Percentage
                                                    June 30,                          Increase                         June 30,                        Increase
                                             2021                 2020               (Decrease)                  2021                2020             (Decrease)
                                                 (in thousands)                                                     (in thousands)
Personnel                              $        1,336          $    992                        35  %       $       2,514          $ 2,108                      19  %
Occupancy and depreciation                        153               222                       (31) %                 299              345                     (13) %
Legal services                                    568               233                       >100 %               1,433            1,415                       1  %
Professional and consulting services              751               257                       >100 %               1,508              645                     >100 %
Insurance costs                                   149               114                        31  %                 303              220                      38  %
Stock-based compensation                          835               400                       >100 %               1,596              855                      87  %
Other general and administrative
expenses                                          276               168                        64  %                 537              392                      37  %
Total general and administrative
expenses                               $        4,068          $  2,386                        70  %       $       8,190          $ 5,980                      37  %


General and administrative expenses were $4.1 million for the three months ended
June 30, 2021, as compared to $2.4 million in the same period in 2020, an
increase of $1.7 million, or 70%. The increase in general administrative expense
was driven primarily by higher costs for stock-based compensation, personnel,
professional and consulting services, and legal services during the three months
ended June 30, 2021.
General and administrative expenses were $8.2 million for the six months ended
June 30, 2021, as compared to $6.0 million in the same period in 2020, an
increase of $2.2 million, or 37%. The increase in general administrative expense
was
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driven primarily by higher costs for stock-based compensation, personnel, and
professional and consulting services costs during the six months ended June 30,
2021.
Other Expense. Other expense decreased by $1.1 million, or 85% for the three
months ended June 30, 2021 as compared to the same period in 2020 primarily due
to the forgiveness of the PPP Loan. See "Liquidity and Capital Resources - Debt
Financing" for further discussion. The remaining net other expense for the three
months ended June 30, 2021 and June 30, 2020 primarily consisted of imputed
interest expense related to future royalty payments.
Other expense decreased by $1.2 million, or 47% for the six months ended June
30, 2021 as compared to the same period in 2020 primarily due to the forgiveness
of the PPP Loan. The remaining net other expense for the six months ended June
30, 2021 and June 30, 2020 primarily consisted of imputed interest expense
related to future royalty payments.
Liquidity and Capital Resources
We have financed our operations primarily through private and public placements
of our equity securities, license fees, contingent cash payments and research
and development funding from our corporate collaborators, debt financings, and
the monetization of certain royalty rights. See "Funding Requirements" and Note
1 to the Condensed Consolidated Financial Statements appearing in this Quarterly
Report on Form 10-Q for a further discussion of our liquidity.
At June 30, 2021, our principal sources of liquidity consisted of cash, cash
equivalents and investments of $160.7 million, excluding our restricted cash of
$0.8 million. Our cash and cash equivalents are highly liquid investments with a
maturity of three months or less at date of purchase. Our short and long-term
investments primarily include commercial paper and securities. We maintain cash
balances with financial institutions in excess of insured limits.
Common Stock Purchase Agreement
In February 2020, we entered into a common stock purchase agreement, or the
Agreement, with Aspire Capital Fund, LLC, or Aspire Capital, for the sale of up
to $30.0 million of our common stock. Under the terms of the Agreement, Aspire
Capital has committed to purchase such shares of our common stock at our
request, from time to time during a 30-month period at prices based on the
market price at the time of each sale, subject to specified terms and
limitations.
Aspire Capital made an initial investment of $3.0 million through the purchase
of 2,693,965 shares of the our common stock. In 2020, Aspire Capital
subsequently purchased an additional 4,650,000 shares of our common stock for
$5.4 million. In addition, as consideration for Aspire Capital's obligation
under the Agreement, we issued 646,551 shares of common stock to Aspire Capital
as a commitment fee. We also entered into a registration rights agreement with
Aspire Capital in connection with our entry into the Agreement in which we
agreed to file with the SEC one or more registration statements, as necessary,
and to the extent permissible and subject to certain exceptions, to register
under the Securities Act, the sale of the shares of our common stock that have
been and may be issued to Aspire Capital under the Agreement. As of June 30,
2021 and December 31, 2020, a total of $21.6 million remained available under
the Agreement. We did not sell shares of common stock under this Agreement
during the three months ended June 30, 2021 and June 30, 2020.
Under the terms of the Agreement, we have the right to sell up to 150,000 shares
of common stock per day to Aspire Capital, which total may be increased by
mutual agreement up to an additional 2,000,000 shares per day. The extent to
which we rely on Aspire Capital as a source of funding will depend on a number
of factors, including the prevailing market price of our common stock and the
extent to which we are able to secure working capital from other sources.
Pursuant to the Agreement, we will control the timing and amount of the further
sale of our common stock to Aspire Capital. We plan to use the proceeds for
general corporate purposes, including research and development, clinical trial
activity and working capital. There are no restrictions on future financings and
there are no financial covenants, participation rights, rights of first refusal,
or penalties in the Agreement. We have the right to terminate the Agreement at
any time without any additional cost or penalty.
Equity Offerings
In March 2020, we entered into a Capital on Demand™ Sales Agreement with
JonesTrading Institutional Services LLC, or JonesTrading, to sell from time to
time up to $30.0 million of our common stock through an "at the market offering"
program under which JonesTrading acted as sales agent. We terminated this sales
agreement effective as of December 9, 2020. We did not incur any termination
penalties as a result of the termination. As of the effective date of the
termination of this sales agreement, we had sold an aggregate of 6,298,648
shares of common stock under the sales agreement for aggregate gross proceeds of
$8.3 million and net proceeds of $7.9 million, after deducting commissions and
offering expenses. The $21.7 million of common stock that remained unsold under
this sales agreement at the time of termination is no longer available.
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In June 2020, we entered into a securities purchase agreement with certain
institutional investors, pursuant to which we issued and sold, in a registered
direct offering, an aggregate of 14,000,000 shares of our common stock at a
purchase price per share of $1.25, for aggregate gross proceeds of
$17.5 million, before deducting fees of approximately $1.0 million paid to the
placement agent and other offering expenses of approximately $0.5 million paid
by us. JonesTrading acted as the exclusive placement agent for the transaction,
and we offered the shares pursuant to our universal shelf registration statement
on Form S-3, or the 2018 Shelf, which was filed with the SEC on May 3, 2018 and
declared effective by the SEC on May 17, 2018 (File No. 333-224627), and a
prospectus supplement thereunder.
In December 2020, we completed an underwritten public offering of 29,500,000
shares of our common stock, including 3,847,826 shares issued and sold upon the
exercise in full of the underwriters' option to purchase additional shares, at a
public offering price of $5.75 per share, for aggregate gross proceeds of $169.6
million before deducting underwriting discounts and commissions and other
offering expenses of $10.2 million. The securities in this transaction were
offered pursuant to the 2018 Shelf and an additional registration statement on
Form S-3 (File No. 333-251211) filed pursuant to Rule 462(b) which became
automatically effective on December 9, 2020, and a prospectus supplement
thereunder.
In March 2021, we entered into a Sales Agreement with Cantor Fitzgerald & Co.,
or Cantor, and JonesTrading to sell from time to time up to $100.0 million of
our common stock through an "at the market offering" program under which Cantor
and JonesTrading act as sales agents. To date, we have not made any sales of
common stock pursuant to the sales agreement. The securities in this transaction
were offered pursuant to an automatic shelf registration statement of securities
on Form S-3ASR (File No. 333-254362) that was filed with the SEC on March 16,
2021.
Debt Financing
In April 2020, we entered into a promissory note evidencing an unsecured $0.9
million loan, or the PPP Loan, under the Paycheck Protection Program, or PPP, of
the Coronavirus Aid, Relief, and Economic Security Act, or the CARES Act as
administered by the U.S. Small Business Administration, or the SBA. The PPP Loan
was made by Silicon Valley Bank and had a term of 24-months and an interest rate
of 1%. Under the terms of the CARES Act and the Paycheck Protection Program
Flexibility Act of 2020, PPP Loan recipients can apply for and be granted
forgiveness for all or a portion of loans granted under the PPP. We applied for
such forgiveness in 2020 and received notification in June 2021 that the SBA has
forgiven the PPP Loan in full, including interest accrued on the PPP Loan.
During the three months and six months ended June 30, 2021, the Company recorded
a gain of $0.9 million to Other income (expense), net for extinguishment of the
debt.
Royalty Interest Purchase Agreement
In March 2019, we and Curis Royalty entered into the Oberland Purchase Agreement
with the Purchasers. We sold to the Purchasers a portion of our rights to
receive royalties from Genentech on potential net sales of Erivedge.
As upfront consideration for the purchase of the royalty rights, at closing the
Purchasers paid to Curis Royalty $65.0 million less certain transaction
expenses. Curis Royalty will also be entitled to receive up to approximately
$70.7 million in milestone payments based on sales of Erivedge as follows: (i)
$17.2 million if the Purchasers and Curis Royalty receive aggregate royalty
payments pursuant to the Oberland Purchase Agreement in excess of $18.0 million
during the calendar year 2021, subject to certain exceptions and (ii) $53.5
million if the Purchasers receive payments pursuant to the Oberland Purchase
Agreement in excess of $117.0 million on or prior to December 31, 2026. For
further discussion please refer to Note 8, Liability Related to the Sale of
Future Royalties.
Milestone Payments and Monetization of Royalty Rights
We have received aggregate milestone payments totaling $59.0 million under our
collaboration with Genentech since 2012. In addition, we began receiving royalty
revenues in 2012 in connection with Genentech's sales of Erivedge in the U.S.
and Roche's sales of Erivedge outside of the U.S. Erivedge royalty revenues
received after December 2012 have been used to repay Curis Royalty's outstanding
principal and interest under the loans due to BioPharma-II and HealthCare
Royalty. A portion of Erivedge royalty and royalty-related revenue payments will
be paid to the Purchasers pursuant to the Oberland Purchase Agreement. We also
remain entitled to receive any contingent payments upon achievement of clinical
development objectives and royalty payments related to sales of Erivedge
pursuant to our collaboration agreement with Genentech and certain contingent
payments upon achievement of contractually specified royalty revenue payment
amounts related to sales of Erivedge pursuant to the Oberland Purchase
Agreement. Upon receipt of any such payments, as well as on royalties received
in any territory other than Australia, we are required to make payments to
certain university licensors totaling 5% of these amounts. In addition, for
royalties that Curis Royalty receives from Roche's sales of Erivedge in
Australia, we were obligated to make payments to university licensors of 2% of
Roche's direct net sales in Australia until the expiration of the patent in
April 2019. After April 2019, the amount we are obligated to pay in Australia
decreased to 5% of the royalty payments that Curis Royalty receives from
Genentech.
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Cash Flows
Cash flows for operations have primarily been used for salaries and wages for
our employees, facility and facility-related costs for our office and
laboratory, fees paid in connection with preclinical and clinical studies,
laboratory supplies, consulting fees and legal fees. We expect that costs
associated with clinical studies will increase in future periods.
Net cash used in operating activities of $19.8 million during the six months
ended June 30, 2021 was primarily the result of our net loss for the period of
$20.8 million, offset by non-cash charges consisting of stock-based
compensation, loan forgiveness, non-cash lease expense, depreciation, and
non-cash imputed interest totaling $2.6 million. Accounts payable, accrued
expenses and operating lease liability decreased by $2.0 and prepaid expenses
and other assets increased by $0.4 million. These changes increased cash
utilization. Accounts receivable decreased $0.7 million and reduced cash
utilization. We recognized a gain of $0.9 million on the forgiveness of the PPP
Loan.
Net cash used in operating activities of $14.1 million during the six months
ended June 30, 2020 was primarily the result of our net loss for the period of
$16.4 million, offset by non-cash charges consisting of stock-based
compensation, amortization of debt issuance costs, non-cash lease expense,
depreciation, and non-cash imputed interest totaling $1.6 million. Accounts
payable and accrued and other liabilities decreased $0.1 million, and accounts
receivable decreased $0.8 million related to a decrease in Erivedge royalties.
Prepaid expenses and other assets decreased $0.1 million.
We expect to continue to use cash in operations as we seek to advance our drug
candidates and our programs under our collaboration agreements with Aurigene and
ImmuNext. In addition, in the future we may owe royalties and other contingent
payments to our licensors based on the achievement of developmental milestones,
product sales and other specified objectives.
Investing activities used cash of $32.8 million and provided cash of $4.6
million for the six months ended June 30, 2021 and 2020, respectively, resulting
primarily from net investment activity from purchases and sales or maturities of
investments for the respective periods.
Financing activities used cash of $1.9 million for the six months ended June 30,
2021, primarily due to the payment of our liability under the Oberland Purchase
Agreement.
Financing activities provided cash of $17.8 million for the six months ended
June 30, 2020, as a result of the proceeds from our registered direct offering
in June 2020 and the issuance of shares to Aspire Capital in the first quarter
of 2020, offset by the payment of our liability under the Oberland Purchase
Agreement.
We have historically derived a portion of our operating cash flow from our
receipt of milestone payments under collaboration agreements with third parties.
However, we cannot predict whether we will receive additional milestone payments
under existing or future collaborations.
Funding Requirements
We have incurred significant losses since our inception. As of June 30, 2021, we
had an accumulated deficit of approximately $1.1 billion. We will require
substantial funds to continue our research and development programs and to
fulfill our planned operating goals. Our planned operating and capital
requirements currently include the support of our current and future research
and development activities for CA-4948 and CI-8993 as well as development
candidates we have and continue to license under our collaborations with
Aurigene and ImmuNext. We will require substantial additional capital to fund
the further development of these programs, as well as to fund our general and
administrative costs and expenses. Moreover, our agreements with collaborators
impose significant potential financial obligations on us. For example, under our
collaboration, license and option agreement with Aurigene, we are required to
make milestone, royalty and option fee payments for discovery, research and
preclinical development programs that will be performed by Aurigene, which
impose significant potential financial obligations on us. In addition, if we
choose to exercise our option under the option and license agreement with
ImmuNext, or the ImmuNext Agreement, we will be required to make milestone,
royalty, and option fee payments in connection with the development of CI-8993.
Based upon our current operating plan, we believe that our existing cash, cash
equivalents and investments of $160.7 million as of June 30, 2021, should enable
us to fund our operating expenses and capital expenditure requirements into
2024. We have based this assessment on assumptions that may prove to be wrong,
and we could exhaust our available capital resources sooner than we expect. We
will need to raise additional capital or incur indebtedness to continue to fund
our operations in the future. Our ability to raise additional funds will depend
on financial, economic and market conditions, many of which are outside of our
control, and we may be unable to raise financing 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, or preventing the marketing of, any of our
product candidates, which could adversely affect our business prospects, and we
may be unable to continue our operations.
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Furthermore, there are a number of factors that may affect our future capital
requirements and further accelerate our need for additional working capital,
many of which are outside our control, including the following:
•unanticipated costs in our research and development programs;
•the timing and cost of obtaining regulatory approvals for our drug candidates
and maintaining compliance with regulatory requirements;
•payments due to licensors, including Aurigene and ImmuNext if we exercise our
option under the ImmuNext Agreement, for patent rights and technology used in
our drug development programs;
•the costs of commercialization activities for any of our drug candidates that
receive marketing approval, to the extent such costs are our responsibility,
including the costs and timing of establishing drug sales, marketing,
distribution and manufacturing capabilities;
•unplanned costs to prepare, file, prosecute, defend and enforce patent claims
and other patent-related costs, including litigation costs and technology
license fees;
•unexpected losses in our cash investments or an inability to otherwise
liquidate our cash investments due to unfavorable conditions in the capital
markets; and
•impacts resulting from the COVID-19 pandemic and responsive actions relating
thereto.
To become and remain profitable, we, either alone or with collaborators, must
develop and eventually commercialize one or more drug candidates with
significant market potential. This will require us to be successful in a range
of challenging activities, including completing preclinical testing and clinical
trials of our drug candidates, obtaining marketing approval for these drug
candidates, manufacturing, marketing and selling those drugs for which we may
obtain marketing approval and satisfying any post marketing requirements. We may
never succeed in these activities and, even if we do, may never generate
revenues that are significant or large enough to achieve profitability. Other
than Erivedge, which is being commercialized by Genentech and Roche, our most
advanced drug candidates are currently only in early clinical testing.
For the foreseeable future, we will need to spend significant capital in an
effort to develop and commercialize products and we expect to incur substantial
operating losses. Our failure to become and remain profitable would, among other
things, depress the market price of our common stock and could impair our
ability to raise capital, expand our business, diversify our research and
development programs or continue our operations.
New Accounting Pronouncements
For detailed information regarding recently issued accounting pronouncements and
the expected impact on our Condensed Consolidated Financial Statements, see Note
2g, New Accounting Pronouncements, in the accompanying Notes to Condensed
Consolidated Financial Statements included in Item 1 of Part I of this Form
10-Q.
Contractual Obligations

There have been no material changes to our contractual obligations set forth
under the heading "Management's Discussion and Analysis of Financial Condition
and Results of Operations - Contractual Obligations" in our Annual Report on
Form 10-K for the year ended December 31, 2020.
Off-Balance Sheet Arrangements
We have no off-balance sheet arrangements as of June 30, 2021.

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