Cullinan Therapeutics, Inc. (CGEM) FY 2023 MD&A
This page reproduces the company's own Item 7 MD&A text from the linked SEC filing. It is filer text, not grepcent analysis, scoring, or investment advice.
Overview
We are a clinical-stage biopharmaceutical company focused on developing modality-agnostic targeted oncology therapies. Our mission is creating new standards of care for patients. Our strategy is to identify high-impact cancer targets, which we define as those that play key roles as either oncogenic drivers or immune system activators, and then select what we believe is the optimal therapeutic modality for those targets. We source innovation both internally and externally, focusing on product candidates with novel technology or differentiated mechanisms. Before we advance a product candidate into clinical development, we evaluate its potential for anti-tumor activity as a single agent as well as its ability to generate an immune response or to inhibit oncogenic processes. Using this strategy, we have built a broad and deep pipeline of targeted oncology programs that includes six distinct clinical-stage product candidates.
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Our lead unpartnered program, CLN-619, is a monoclonal antibody that stabilizes expression of MICA/B on the tumor cell surface to promote tumor cell lysis mediated by both cytotoxic innate and adaptive immune cells. CLN-619 is being investigated as both monotherapy and in combination with checkpoint inhibitor therapy in an ongoing Phase 1 clinical trial in patients with advanced solid tumors. We intend to present initial data from the checkpoint inhibitor therapy combination dose escalation module of the clinical trial, as well as updated data from the monotherapy dose escalation module, in the second quarter of 2024. Initial data from the disease specific expansion cohorts are anticipated in the first half of 2025. Separately, in February 2024, the United States ("“U.S."”) Food and Drug Administration ("“FDA"”) cleared our Investigational New Drug ("“IND"”) application to evaluate CLN-619 in a Phase 1 clinical trial in relapsed/refractory multiple myeloma patients.
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CLN-978 is a CD19xCD3 T cell engager with extended serum half-life and, based on preclinical data, robust potency against target cells expressing low levels of CD19. In August 2023, we dosed the first patient in our Phase 1 clinical trial of CLN-978 in patients with relapsed/refractory B cell non-Hodgkin lymphoma (“B-NHL”). Recently, academic and industry groups have generated clinical data and case series demonstrating that CD19 targeted CAR T cell therapy could lead to sustained improvements in disease, including durable remission in some cases, in several B cell mediated autoimmune indications. Nonetheless, cell therapy has many limitations, including the need for lymphodepleting chemotherapy, which is associated with significant toxicities, an FDA-recognized risk of secondary malignancies, and extended manufacturing timelines due to complexity of production. Based on the emerging clinical data supporting the efficacy of CD19 directed therapy in multiple autoimmune diseases and our belief that CLN-978 may address these limitations of CAR T cell therapy, we are also exploring the development of CLN-978 in autoimmune diseases.
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Zipalertinib (CLN-081/TAS6417), which we are co-developing with an affiliate of Taiho Pharmaceutical Co., Ltd ("Taiho"), is an orally-available small-molecule, irreversible epidermal growth factor receptor ("EGFR") inhibitor that is designed to selectively target cells expressing EGFR exon 20 ("EGFRex20") insertion mutations with relative sparing of cells expressing wild-type EGFR. The FDA has granted Breakthrough Therapy designation to zipalertinib. In collaboration with our partners at Taiho, we are evaluating zipalertinib in the pivotal Phase 2b portion of the REZILIENT1 clinical trial in patients with EGFRex20 non-small-cell lung cancer ("NSCLC") who progressed after prior systemic therapy, and in a global Phase 3 clinical trial (“REZILIENT3”) in combination with chemotherapy as a potential first-line treatment for EGFRex20 NSCLC adult patients. We expect to complete enrollment in the pivotal Phase 2b portion of the REZILIENT1 clinical trial by year-end 2024. Taiho and we will each receive 50% of any future pre-tax profits from potential U.S. sales of zipalertinib.
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CLN-049 is a FLT3xCD3 T cell engaging bispecific antibody being investigated in patients with relapsed/refractory acute myeloid leukemia ("AML") or myelodysplastic syndrome ("MDS"). CLN-049 is currently in an ongoing Phase 1 clinical trial with updated clinical data expected in the second half of 2024. In December 2023, we initiated a second Phase 1 clinical trial designed to evaluate the safety of CLN-049 in minimal residual disease-positive AML.
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CLN-418 is a B7H4x4-1BB fully human bispecific immune activator designed to achieve conditional activation of 4-1BB by targeting B7H4, a tumor-associated antigen that is highly expressed across multiple cancers with minimal expression on normal tissues. CLN-418 is being investigated in an ongoing Phase 1 clinical trial in patients with advanced solid tumors with initial clinical data expected in the second half of 2024.
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CLN-617 is a fusion protein combining two potent antitumor cytokines, interleukin-2 ("IL-2") and interleukin-12 ("IL-12") with tumor retention domains for the treatment of solid tumors. In December 2023, we dosed the first patient in the CLN-617 first-in-human Phase 1 clinical trial.
In addition to the product candidates described above, we are actively developing several preclinical oncology programs, all in the discovery stage, including our collaboration with Icahn School of Medicine at Mount Sinai for the development of novel hematopoietic progenitor kinase 1 degraders.
When we were a private company, we established development subsidiaries when we acquired or licensed exclusive worldwide rights to intellectual property, including for CLN-619, CLN-049, and CLN-617. The structure of our financing arrangements with each development subsidiary enables us to increase our economic ownership when we provide additional capital. We have not established development subsidiaries for our other current product candidates and programs. In June 2022, we sold our equity interest in our development subsidiary for zipalertinib to Taiho, and in connection with the sale and pursuant to a co-development agreement, we are co-developing zipalertinib with an affiliate of Taiho. We hold the intellectual property rights for CLN-978 and CLN-418, and we hold intellectual property rights or exclusive options for worldwide intellectual property for our earlier-stage programs. The following table shows our ownership interest as of December 31, 2023 in our development subsidiaries and their product candidates:
| Development Subsidiary (Product Candidate) | Ownership as of December 31, 2023 | |
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| Cullinan MICA Corp. (CLN-619) | 95% | |
| Cullinan Florentine Corp. (CLN-049) | 96% | |
| Cullinan Amber Corp. (CLN-617) | 94% |
Since our inception in 2016, we have focused all of our efforts and financial resources on raising capital, organizing and staffing our company, identifying, acquiring or in-licensing and developing product and technology rights, establishing and protecting our intellectual property portfolio and developing and advancing our programs. We do not have any products approved for sale and have not generated any revenue from product sales.
We have funded our operations primarily through the sale of equity securities and from licensing or selling the rights to our product candidates. As of December 31, 2023, we have received net proceeds of $579.6 million from equity financings, inclusive of our net proceeds of $264.5 million from our initial public offering ("IPO"). We have received $18.9 million in revenue from a previous license agreement and cash proceeds of $275.0 million from the sale of our equity interest in Cullinan Pearl Corp. ("Cullinan Pearl") to Taiho in June 2022.
As of December 31, 2023, we had cash, cash equivalents, short-term investments, and interest receivable of $468.3 million. Interest receivable is included in prepaid expenses and other current assets on the consolidated balance sheets and represents accrued and unpaid interest on our marketable securities. We have incurred significant operating losses, with the exception of 2022, and have had negative cash flows from operations since our inception. As of December 31, 2023, we had an accumulated deficit of $200.9 million. We expect to continue to generate operating losses for the foreseeable future. Our future viability is dependent on the success of our research and development and our ability to access additional capital to fund our operations. There can be no assurance that our current operating plan will be achieved or that additional funding will be available on terms acceptable to us, or at all.
We are subject to risks and uncertainties common to early-stage companies in the biotechnology industry including, but not limited to, new technological innovations, protection of proprietary technology, dependence on key personnel, compliance with government regulations and the ability to obtain additional capital to fund operations. Our current and future product candidates will require significant additional research and development efforts, including preclinical and clinical testing and regulatory approval prior to commercialization. These efforts require additional capital, adequate personnel and extensive compliance-reporting capabilities. There can be no assurance that our research and development will be successfully completed, that adequate protection for our intellectual property will be obtained, that any products developed will obtain necessary government regulatory approval or that any approved products will be commercially viable.
Components of Our Results of Operations
Revenue
We have not generated any revenue from the sale of products since our inception and do not expect to generate any revenue from the sale of products in the near future, if at all.
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Research and Development Expenses
Research and development expenses consist primarily of costs incurred in connection with the research and development of our product candidates and programs. These expenses include:
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compensation costs for employees engaged in research and development functions;
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expenses incurred under agreements with organizations that support our drug discovery and development activities;
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expenses incurred in connection with the preclinical and clinical development of our product candidates and programs, including under agreements with contract research organizations ("CROs");
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costs related to contract manufacturing organizations, that are primarily engaged to provide drug substance, raw materials, and drug product for our clinical trials, research and development programs, as well as investigative sites and consultants that conduct our clinical trials, nonclinical studies, and other scientific development services;
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the costs of acquiring and manufacturing nonclinical and clinical trial materials, including manufacturing registration and validation batches;
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costs related to compliance with quality and regulatory requirements;
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payments made under third-party licensing agreements; and
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direct and allocated costs related to facilities, information technology, personnel and other overhead.
Following the sale of our equity interest in Cullinan Pearl in the second quarter of 2022, development costs and any future potential pre-tax profits from potential U.S. sales of zipalertinib are shared equally between us and Taiho.
General and Administrative Expenses
General and administrative expenses consist primarily of compensation costs for personnel in executive management, finance, legal, corporate and business development, and other administrative functions. General and administrative expenses also include legal fees relating to patent and corporate matters; professional fees for accounting, auditing, tax, and administrative consulting services; insurance costs; administrative travel expenses; marketing expenses; and other operating costs.
Gain on Sale of Cullinan Pearl
Gain on sale of Cullinan Pearl represents the excess of the consideration received over the carrying value of the non-financial assets sold. Refer to Note 3 of our notes to the consolidated financial statements included in this Annual Report on Form 10-K for additional details relating to the transaction.
Impairment of Long-Lived Assets
Impairment of long-lived assets represents the impairment charge for the carrying value in excess of the fair value of the assets. Refer to Note 12 of our notes to the consolidated financial statements in this Annual Report on Form 10-K for additional details relating to the impairment.
Other Income
Other income consists primarily of interest income earned on our cash, cash equivalents, and investments.
Income Taxes
Income taxes consist primarily of federal and state income taxes.
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Results of Operations
Comparison of 2023 and 2022
The following table presents our results of operations for 2023 and 2022 (in thousands):
| 2023 | 2022 | |||||||
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| Operating expenses: | ||||||||
| Research and development | $ | 148,156 | $ | 91,948 | ||||
| General and administrative | 42,493 | 40,189 | ||||||
| Total operating expenses | 190,649 | 132,137 | ||||||
| Impairment of long-lived assets | (440 | ) | — | |||||
| Gain on sale of Cullinan Pearl | — | 276,785 | ||||||
| Income (loss) from operations | (191,089 | ) | 144,648 | |||||
| Other income (expense): | ||||||||
| Interest income | 21,627 | 6,611 | ||||||
| Other income (expense), net | 239 | 57 | ||||||
| Net income (loss) before income taxes | (169,223 | ) | 151,316 | |||||
| Income tax expense (benefit) | (14,122 | ) | 42,121 | |||||
| Net income (loss) | (155,101 | ) | 109,195 | |||||
| Net loss attributable to noncontrolling interests | (1,939 | ) | (2,019 | ) | ||||
| Net income (loss) attributable to common stockholders of Cullinan | $ | (153,162 | ) | $ | 111,214 |
Research and Development Expenses
The following table summarizes our research and development expenses for 2023 and 2022 (in thousands):
| 2023 | 2022 | ||||||
|---|---|---|---|---|---|---|---|
| CLN-619 | $ | 22,854 | $ | 16,815 | |||
| CLN-978 | 5,493 | 10,822 | |||||
| Zipalertinib | 31,234 | 16,889 | |||||
| CLN-049 | 9,236 | 6,605 | |||||
| CLN-418 | 38,539 | — | |||||
| CLN-617 | 8,272 | 12,110 | |||||
| Clinical-stage product candidates | 115,628 | 63,241 | |||||
| Early-stage research | 4,645 | 6,894 | |||||
| Unallocated personnel and other | 15,715 | 10,795 | |||||
| Equity-based compensation | 12,168 | 11,018 | |||||
| Total research and development expenses | $ | 148,156 | $ | 91,948 |
The $56.2 million increase in research and development expenses in 2023 compared to 2022 was primarily related to increased clinical costs ($33.3 million), an upfront fee due upon in-licensing CLN-418 ($25.0 million), higher personnel costs due to increased headcount and expansion of operations to support our research and development activities ($9.1 million), and higher equity-based compensation costs ($1.2 million), partially offset by lower preclinical costs ($11.0 million) some of which is allocated to product candidates in the above table.
General and Administrative Expenses
The increase of $2.3 million in general and administrative expenses in 2023 compared to 2022 was primarily due to an increase in personnel costs ($3.1 million), an increase in equity-based compensation expense ($1.3 million), and higher occupancy and other costs to support our expanded operations ($0.8 million), partially offset by one-time costs related to the sale of Cullinan Pearl in 2022 that did not recur in 2023 ($2.0 million), and lower legal and other professional service fees ($0.9 million).
Impairment of Long-Lived Assets
Impairment of long-lived assets represents the impairment charge for the carrying value in excess of the fair value of the assets. Refer to Note 12 of our notes to the consolidated financial statements in this Annual Report on Form 10-K for additional details relating to the impairment.
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Gain on Sale of Cullinan Pearl
Gain on sale of Cullinan Pearl represents the excess of the consideration received over the carrying value of the non-financial assets sold. Refer to Note 3 of our notes to the consolidated financial statements included in this Annual Report on Form 10-K for additional details relating to the transaction.
Other Income
The $15.2 million increase in other income in 2023 compared to 2022 was primarily related to higher interest income earned.
Income Tax Expense (Benefit)
The income tax benefit recognized for 2023 represents return to provision adjustments for the utilization of 2022 and historical tax attributes against the gain on sale of Cullinan Pearl and the expected utilization of tax attributes generated during 2023 that can be carried back to 2022. The income tax expense recognized for 2022 represents the tax from the gain on sale of Cullinan Pearl, including the expected utilization of tax attributes generated during 2022 and the release of valuation allowance for the expected utilization of certain historical tax attributes against the gain from the sale.
Net Loss Attributable to Noncontrolling Interests
Net loss attributable to noncontrolling interests is determined as the difference in the noncontrolling interests in the consolidated balance sheets between the start and end of each reporting period, after taking into account any capital transactions between our development subsidiaries and third parties. Refer to Note 8 of our notes to the consolidated financial statements included in this Annual Report on Form 10-K for additional details of capital transactions between our development subsidiaries and third parties.
Liquidity and Capital Resources
Overview
We have incurred significant operating losses, with the exception of 2022, and have had negative cash flows from operations since our inception and expect to continue to generate operating losses for the foreseeable future. We have not yet commercialized any products and we do not expect to generate revenue from sales of products for several years, if at all. To date, we have funded our operations primarily with proceeds from the sale of equity securities and from licensing or selling the rights to our product candidates. As of December 31, 2023, we had cash, cash equivalents, short-term investments, and interest receivable of $468.3 million.
Based on our current operational plans and assumptions, we expect that our current cash, cash equivalents, investments, and interest receivable, will be sufficient to fund operations into the second half of 2026. We have based these estimates on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we expect. We cannot guarantee that we will be able to raise additional capital on reasonable terms or at all.
In February 2023, we entered into a license and collaboration agreement (the “Harbour License Agreement”) with Harbour BioMed US Inc. ("Harbour"), pursuant to which Harbour granted us an exclusive license for the development, manufacturing and commercialization of CLN-418 in the U.S. Under the terms of the Harbour License Agreement, we paid Harbour an upfront license fee of $25.0 million at signing.
In May 2023, we entered into an agreement with Cowen and Company, LLC (“Cowen”) to establish an at-the-market equity offering program (the "ATM"), pursuant to which we may offer and sell up to $125.0 million of our common stock from time to time through Cowen, acting as our sales agent. In the second quarter of 2023, we sold approximately 3.3 million shares under the ATM and received net proceeds of $38.4 million, after deducting commissions. We have not subsequently made sales under the ATM. As of December 31, 2023, we had $85.6 million in shares of our common stock remaining under the ATM.
Cash Flows
Comparison of 2023 and 2022
The following table summarizes our sources and uses of cash for 2023 and 2022 (in thousands):
| 2023 | 2022 | |||||||
|---|---|---|---|---|---|---|---|---|
| Net cash used in operating activities | $ | (134,275 | ) | $ | (126,664 | ) | ||
| Net cash provided by investing activities | 35,806 | 248,975 | ||||||
| Net cash provided by (used in) financing activities | 40,751 | (25,933 | ) | |||||
| Net increase (decrease) in cash and cash equivalents | $ | (57,718 | ) | $ | 96,378 |
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Cash Flow from Operating Activities
During 2023, our operating activities used $134.3 million of cash, which primarily consisted of our operating expenses of $159.9 million excluding non-cash items, partially offset by interest income of $11.5 million excluding accretion on marketable securities, a benefit of $9.3 million from the net change in our non-tax operating assets and liabilities, income tax refunds of $4.4 million, and sublease income of $0.5 million. The non-cash operating expenses primarily consisted of equity-based compensation expense.
During 2022, our operating activities used $126.7 million of cash, which primarily consisted of our operating expenses of $103.7 million excluding non-cash items and $37.8 million in payments for a portion of our estimated tax liability from the gain on sale of Cullinan Pearl, partially offset by interest income of $7.9 million excluding amortization on marketable securities, and a benefit of $6.9 million from the net change in our non-tax operating assets and liabilities. The non-cash operating expenses primarily consisted of equity-based compensation expense.
Cash Flow from Investing Activities
During 2023, our investing activities provided $35.8 million of cash, which primarily consisted proceeds of $409.4 million from the maturities of marketable securities, partially offset by the purchase of marketable securities of $373.4 million.
During 2022, our investing activities provided $249.0 million of cash, which primarily consisted of proceeds of $352.9 million from the maturities of marketable securities and proceeds of $275.0 million from the sale of our equity interest in Cullinan Pearl, partially offset by $377.9 million used for the purchase of marketable securities and $1.1 million for the purchase of property and equipment to improve and furnish our leased office space.
Cash Flow from Financing Activities
During 2023, our financing activities provided $40.8 million of cash, which primarily consisted of $38.4 million of net proceeds from the issuance of common stock under our ATM, proceeds of $1.8 million from the issuance of a convertible note by our CLN-619 development subsidiary to a noncontrolling interest, and net issuance of common stock under equity-based compensation plans of $0.5 million.
During 2022, our financing activities used $25.9 million of cash, which primarily consisted of $33.3 million paid to acquire shares of our CLN-619 development subsidiary that were held by noncontrolling interests, partially offset by proceeds of $6.0 million from stock option exercises and proceeds of $1.2 million from the issuance of noncontrolling interests in our CLN-619 development subsidiary.
Future Funding Requirements
We expect our expenses to continue to increase in connection with our ongoing activities, particularly as we advance the clinical trials and manufacturing of our product candidates along with preclinical activities for our current and potential future product candidates. In addition, we have and will continue to incur additional costs associated with operating as a public company, including significant legal, accounting, investor relations and other expenses.
Our expenses will also increase as we:
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continue our research and development efforts and submit INDs for our current and future product candidates and programs;
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conduct preclinical studies and clinical trials for our current and future product candidates;
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experience any delays or encounter any issues with any of the above, including but not limited to failed studies, or trials, complex results, safety issues, or other regulatory challenges;
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develop the necessary processes, controls, and manufacturing capabilities to obtain marketing approval for our current and future product candidates and to support manufacturing on a commercial scale;
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develop and implement plans to establish and operate in-house manufacturing operations and facilities, if deemed appropriate;
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seek regulatory approvals for our current and future product candidates that successfully complete clinical trials;
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hire and retain additional personnel, such as non-clinical, clinical, pharmacovigilance, quality assurance, regulatory affairs, manufacturing, distribution, legal, compliance, medical affairs, finance, general and administrative, commercial, and scientific personnel; and
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develop, maintain, expand, and protect our intellectual property portfolio.
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Based on our current operational plans and assumptions, we expect that our current cash, cash equivalents, investments, and interest receivable will be sufficient to fund operations into the second half of 2026. We have based these estimates on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we expect. As we progress with our development programs and the regulatory review process, we expect to incur significant expenses related to product manufacturing, pre-commercial activities and commercialization. We may also require additional capital to pursue in-licenses or acquisitions of other programs to further expand our pipeline.
Because of the numerous risks and uncertainties associated with research, development and commercialization of our product candidates and programs, we are unable to estimate the exact amount of our working capital requirements. Our future funding requirements will depend on and could increase significantly as a result of many factors, including:
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the scope, progress, results, and costs of drug discovery, laboratory testing, and preclinical and clinical development for our current and future product candidates;
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timely completion of our preclinical studies and clinical trials, which may be significantly slower or cost more than we currently anticipate and will depend substantially upon the performance of third-party contractors;
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the prevalence, duration, and severity of potential side effects or other safety issues experienced by patients receiving our current and future product candidates;
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our ability to establish and maintain collaborations and license agreements on favorable terms, if at all, and the extent to which we acquire or in-license technologies or programs, if at all;
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our ability to enroll clinical trials in a timely manner and to quickly resolve any delays or clinical holds that may be imposed on our development programs;
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the costs of expanding our facilities to accommodate our expected growth in personnel;
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our ability and the ability of third parties with whom we contract to manufacture adequate clinical and commercial supplies of our current and future product candidates, remain in good standing with regulatory authorities and develop, validate, and maintain commercially viable manufacturing processes that are compliant with current good manufacturing practices;
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the costs of preparing, filing, and prosecuting patent applications, maintaining and enforcing our intellectual property rights, and defending intellectual property-related claims;
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the extent to which we acquire or in-license technologies or programs;
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the sales price and availability of adequate third-party coverage and reimbursement for our product candidates, if and when approved; and
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the ongoing costs of operating as a public company.
Until such time, if ever, that we can generate product revenue sufficient to achieve profitability, we expect to finance our cash needs through equity offerings, debt financings, government or other third-party funding, marketing and distribution arrangements, and other collaborations, strategic alliances and licensing arrangements. To the extent that we raise additional capital through the sale of equity, current ownership interests will be diluted. If we raise additional funds through government or third-party funding, collaboration agreements, strategic alliances, licensing arrangements, or marketing and distribution arrangements, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates, or grant licenses on terms that may not be favorable to us. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures, or declaring dividends. If we are unable to raise additional funds when needed, we may be required to delay, limit, reduce, or terminate our product development or future commercialization efforts or grant rights to develop and market products or product candidates that we would otherwise prefer to develop and market ourselves.
Contractual Obligations and Other Commitments
We have certain payment obligations under various license and collaboration agreements. Under these agreements, we are required to make milestone payments upon successful completion and achievement of certain intellectual property, clinical, regulatory, and sales milestones. The payment obligations under the license and collaboration agreements are contingent upon future events, such as our achievement of specified development, clinical, regulatory, and commercial milestones, and we will be required to make milestone and royalty payments in connection with the sale of products developed under these agreements. As the achievement and timing of these future milestone payments are not probable or estimable, such amounts have not been included in our consolidated balance sheet as of December 31, 2023 and 2022.
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As of December 31, 2023, total future minimum lease payments were $4.1 million with $1.7 million payable within 12 months. See Note 13 of our consolidated financial statements included in this Annual Report on Form 10-K for further detail on our lease obligations and the timing of expected future payments.
In addition, we enter into agreements in the normal course of business with CROs for clinical trials and with other vendors for preclinical studies, manufacturing services, and other services and products for operating purposes, which are generally cancelable upon written notice.
Critical Accounting Policies and Estimates
Our consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles ("GAAP"). The preparation of our consolidated financial statements and related disclosures requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, costs and expenses, and the disclosure of contingent assets and liabilities in our consolidated financial statements. We base our estimates on historical experience, known trends and events and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates under different assumptions or conditions.
While our significant accounting policies are described in more detail in Note 2 of our consolidated financial statements included in this Annual Report on Form 10-K, we believe that the following accounting policies are those most critical to the judgments and estimates used in the preparation of our consolidated financial statements.
Research and Development Contract Costs and Accruals
Research and development costs are expensed as incurred. We record accrued liabilities for estimated costs of research and development activities conducted by third-party service providers, which include the conduct of preclinical studies, clinical trials and contract manufacturing activities. We record the estimated costs of research and development activities based upon the estimated amount of services provided but not yet invoiced and include these costs in accrued research and development liabilities in our consolidated balance sheets and within research and development expense in our consolidated statements of operations and comprehensive income (loss). These costs are a significant component of our research and development expenses.
We accrue for these costs based on factors such as estimates of the amount of work completed through discussions with internal personnel and external service providers as to the progress or stage of completion of the services and in accordance with agreements established with our third-party service providers for such services. We make significant judgments and estimates in determining the accrued research and development liabilities balance at each reporting period. As actual costs become known, we adjust our accrued estimates. Although we do not expect our estimates to be materially different from amounts actually incurred, the status and timing of services performed, the number of patients enrolled in clinical trials and the rate of patient enrollment may vary from our estimates and could result in us reporting amounts that are too high or too low in any particular period. Our accrued expenses are dependent, in part, upon the receipt of timely and accurate reporting from clinical research organizations and other third-party service providers. We record advance payments to service providers as prepaid assets, which are expensed as the contracted services are performed.
Equity-Based Compensation Expense
We measure the fair value of market-based restricted stock units ("RSUs") on the grant date using a Monte Carlo simulation model. We estimate the fair value of stock options using the Black-Scholes option pricing model. Both the Monte Carlo simulation model and the Black-Scholes option pricing model require the input of objective and subjective assumptions. Certain assumptions used, including our expected stock price volatility, represent management’s estimates and involve inherent uncertainties and the application of management’s judgment. As a result, if factors change and management uses different assumptions, equity-based compensation expense could be materially different for future awards.
We do not have sufficient historical or implied volatility data for our common stock necessary to estimate expected volatility over a period of time commensurate with the expected term of our stock option awards. Prior to 2023, the expected volatility used in the Black-Scholes option pricing model for new options was based on historical volatilities of the stock prices of similar entities within our industry over a period of time commensurate with the expected term assumption. In 2023, we determined that a sufficient amount of historical information was available regarding the volatility of our stock price to begin using a blended rate that combines our historical volatility with the historical volatilities of the stock prices of similar entities within our industry over a period of time commensurate with the expected term assumption.
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Income Taxes
Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. A reduction in the carrying value of the deferred tax assets is required when it is not more likely than not that such deferred tax assets are not realizable. Judgment is required to if certain income tax positions are more likely than not of being sustained and may change from period to period when there is a change in judgment.
Emerging Growth Company Status
In April 2012, the JOBS Act was enacted. Section 107 of the JOBS Act provides that an “emerging growth company,” (“EGC”) can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act for complying with new or revised accounting standards. Thus, an EGC can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to use the extended transition period for new or revised accounting standards during the period in which we remain an emerging growth company; however, we may adopt certain new or revised accounting standards early.
We will remain an emerging growth company until the earliest to occur of (1) the last day of the fiscal year (a) following the fifth anniversary of the closing of our initial public offering, (b) in which we have total annual gross revenue of at least $1.235 billion or (c) in which we are deemed to be a large accelerated filer, which requires the market value of our common stock that is held by non-affiliates to exceed $700 million as of the prior June 30th, and (2) the date on which we have issued more than $1 billion in non-convertible debt during the prior three-year period.
Recently Issued and Adopted Accounting Pronouncements
A description of recently issued accounting pronouncements that may potentially impact our financial position and results of operations is disclosed in Note 2 of our consolidated financial statements included in this Annual Report on Form 10-K.
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