Biggest changeThe following tables set forth our results of operations for the periods presented (In thousands): For the Years Ended December 31, 2024 2023 Revenues Partner program revenue $ 4,534 $ 5,718 Total revenues 4,534 5,718 Operating expenses Research and development 63,859 48,067 Selling, general and administrative 36,174 37,832 Depreciation and amortization 13,389 13,999 Goodwill impairment — 21,335 Total operating expenses 113,422 121,233 Operating loss (108,888) (115,515) Other income (expense) Interest expense (565) (1,010) Other income, net 6,417 6,059 Total other income, net 5,852 5,049 Loss before income taxes (103,036) (110,466) Income tax expense (70) (100) Net loss $ (103,106) $ (110,566) 90 Comparison of the Years Ended December 31, 2024 and 2023 The following table summarizes our results of operations for the years ended December 31, 2024 and 2023 (In thousands, except for percentages): Revenue For the Years Ended December 31, 2024 2023 $ Change % Change Revenues Partner program revenue $ 4,534 $ 5,718 $ (1,184) (21) % Total revenues $ 4,534 $ 5,718 $ (1,184) (21) % Partner program revenue decreased by $1.2 million, or 21%, for the year ended December 31, 2024 compared to the year ended December 31, 2023, driven by a combination of the timing of achieving project-based milestones and the mix of ongoing program activity under our drug creation agreements.
Biggest changeThe following tables set forth our results of operations for the periods presented (In thousands): For the Years Ended December 31, 2025 2024 Partner program revenue $ 2,800 $ 4,534 Operating expenses Research and development 81,418 63,859 Selling, general and administrative 35,058 36,174 Depreciation and amortization 11,742 13,389 Gain on settlement of contingent consideration (5,101) — Total operating expenses 123,117 113,422 Operating loss (120,317) (108,888) Other income (expense) Interest expense (209) (565) Other income, net 5,412 6,417 Total other income, net 5,203 5,852 Loss before income taxes (115,114) (103,036) Income tax expense (69) (70) Net loss $ (115,183) $ (103,106) Comparison of the Years Ended December 31, 2025 and 2024 Revenue Partner program revenue decreased by $1.7 million, or 38%, for the year ended December 31, 2025 compared to the year ended December 31, 2024, driven by a combination of the timing of achieving project-based milestones and the mix of ongoing program activity under our drug creation agreements.
Research and development activities consist of continued development of our Integrated Drug Creation platform, internally developed programs, and partnered programs. We derive improvements to our Integrated Drug Creation platform from each type of activity. Research and development efforts apply to our Integrated Drug Creation platform broadly, as well as and across programs.
Research and development activities consist of continued development of our Integrated Drug Creation platform, internally developed programs, and partnered programs. We derive improvements to our Integrated Drug Creation platform from each type of activity. Research and development efforts apply to our Integrated Drug Creation platform broadly, as well as across programs.
We also hold trademarks and trademark applications in the United States and foreign jurisdictions. Costs to secure and defend our intellectual property are expensed as incurred and are classified as selling, general and administrative expenses. 89 Depreciation and amortization Depreciation and amortization expense consists of the depreciation expense of our property and equipment and amortization of our intangibles.
We also hold trademarks and trademark applications in the United States and foreign jurisdictions. Costs to secure and defend our intellectual property are expensed as incurred and are classified as selling, general and administrative expenses. Depreciation and amortization Depreciation and amortization expense consists of the depreciation expense of our property and equipment and amortization of our intangibles.
Debt financing and preferred equity financing, if available, may involve agreements that include covenants restricting our ability to take specific actions, such as incurring additional debt, selling or licensing our programs, making product acquisitions, making capital expenditures, or declaring dividends.
Debt financing and preferred equity financing, if available, may involve agreements that include covenants restricting our 99 ability to take specific actions, such as incurring additional debt, selling or licensing our programs, making product acquisitions, making capital expenditures, or declaring dividends.
We refer to our customers as “partners” when describing our relationship in an agreement. 94 Partner program revenue Our drug creation agreements related to our partnered programs generally include multiple stages of drug creation that combined represent a single performance obligation.
We refer to our customers as “partners” when describing our relationship in an agreement. Partner program revenue Our drug creation agreements related to our partnered programs generally include multiple stages of drug creation that combined represent a single performance obligation.
Operating Expenses Research and development Research and development expenses include the personnel-related costs (comprised of salaries, benefits and share-based compensation), contract research services, contract manufacturing, consulting fees, laboratory supplies and facilities, and certain technology costs. These expenses are exclusive of depreciation and amortization.
Operating Expenses Research and development Research and development expenses include personnel-related costs (comprised of salaries, benefits and share-based compensation), contract research services, contract manufacturing, consulting fees, laboratory supplies and facilities, and certain technology costs. These expenses are exclusive of depreciation and amortization.
If we are unable to execute on our business plan and adequately fund operations, or if our business plan requires a level of spending in excess of cash resources, we may be required to change our strategies related to pre-clinical and clinical development and our approach to negotiating partnerships.
If we are unable to execute on our business plan and adequately fund operations, or if our business plan requires a level of spending in excess of cash resources, we may be required to change our strategies related to preclinical and clinical development and our approach to negotiating partnerships.
Income taxes Income tax expense for the year ended December 31, 2024 represents state income tax obligations and taxes in foreign jurisdictions for which we conduct business. Income tax expense for the year ended December 31, 2023 represents our federal and certain state income tax obligations and taxes in foreign jurisdictions for which we conduct business.
Income taxes Income tax expense for the year ended December 31, 2025 represents taxes in foreign jurisdictions for which we conduct business. Income tax expense for the year ended December 31, 2024 represents our federal and certain state income tax obligations and taxes in foreign jurisdictions for which we conduct business.
As of December 31, 2024, we have recorded a full valuation allowance on our U.S. federal and state deferred tax assets. Our effective income tax rate from continuing operations was (0.1)% and (0.1)% for the years ended December 31, 2024 and 2023, respectively.
As of 101 December 31, 2025, we have recorded a full valuation allowance on our U.S. federal and state deferred tax assets. Our effective income tax rate from continuing operations was (0.1)% for the years ended December 31, 2025 and 2024.
We expect research and development expenses to increase in absolute dollars over the long term as we develop and advance our internally developed programs, enter into additional partnerships, and continue to invest in technology enhancements.
We expect research and development expenses to increase in absolute dollars over the long term as we develop and advance our internally developed programs through pre-clinical and clinical activities, enter into additional partnerships, and continue to invest in technology enhancements.
We expect that our revenue will fluctuate from period to period due to, for example, the timing of executing additional partnerships, the contractual structure of future partnerships, the uncertainty of the timing of milestone achievements and dependence on our partners’ program-related decisions.
We expect that our revenue will fluctuate from period to period due to, for example, the timing of executing additional partnerships, the contractual structure of future partnerships, the measurement of progress towards completion of each program, the uncertainty of the timing of milestone achievements and dependence on our partners’ program-related decisions.
We believe that our cash, cash equivalents and short-term investments will be sufficient to meet our operating expenses, working capital and capital expenditure needs over at least the next 12 months following the date of this filing.
We believe that our cash, cash equivalents and marketable securities will be sufficient to meet our operating expenses, working capital and capital expenditure needs over at least the next 12 months following the date of this filing.
Our future capital requirements will depend on many factors, including, but not limited to our ability to raise additional capital through equity or debt financing, the development of our internally developed programs including the progress and strategy of any pre-clinical and clinical activities, our ability to successfully secure additional partnerships under contract with new partners and increase the number of programs covered under contracts with existing partners, the advancement of technology development activities with existing and future partners, the successful preclinical and clinical development by us and our partners of product candidates generated using our Integrated Drug Creation platform, and the successful commercialization by us and our partners of any such product candidates that are approved.
Our future capital requirements will depend on many factors, including, but not limited to our ability to raise additional capital through equity or debt financing, the development of our internally developed programs including the progress and strategy of our preclinical and clinical activities, our ability to successfully enter into additional partnerships with new and existing partners, the advancement of technology development activities with existing and future partners, the successful preclinical and clinical development by us and our partners of product candidates generated using our Integrated Drug Creation platform, and the successful commercialization by us and our partners of any such product candidates that are approved.
Emerging Growth Company Status We are an emerging growth company, as defined in the JOBS Act. Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies.
Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies.
On June 16, 2023, we entered into a Sales Agreement with Cowen and Company, LLC, as Sales Agent, with respect to an “at the market offering” program under which we may offer and sell, from time to time at our sole discretion, shares of our common stock, par value $0.0001 per share, having an aggregate offering price of up to $100.0 million through the Sales Agent.
At-the-market offering In June 2023, the Company entered into a Sales Agreement with Cowen and Company, LLC, as Sales Agent (the “Prior Sales Agreement”), with respect to an “at the market offering” program under which the Company had the ability to offer and sell, from time to time, shares of its common stock, par value $0.0001 per share, having an aggregate offering price of up to $100.0 million through the Sales Agent.
Sources of liquidity Since our inception, we have financed our operations primarily from the issuance and sale of our redeemable convertible preferred stock, issuances of equity securities, borrowings under long-term debt agreements, and to a lesser extent, cash flow from operations. Equipment financing In 2022, we received a total of $12.0 million of proceeds from equipment financing arrangements.
Sources of liquidity Since our inception, we have financed our operations primarily from the issuance and sale of our redeemable convertible preferred stock, issuances of equity securities, borrowings under long-term debt agreements, and to a lesser extent, cash flow from operations.
Total revenue was $4.5 million for the year ended December 31, 2024, compared to $5.7 million for the year ended December 31, 2023, a decrease of $1.2 million due to the number of ongoing partnered programs and respective timing of project-based milestones achieved.
Financial results Revenue was $2.8 million for the year ended December 31, 2025 compared to $4.5 million for the year ended December 31, 2024 due to the number of ongoing partnered programs and respective timing of project-based milestones achieved.
In the year ended December 31, 2023, net cash used in financing activities was $4.5 million primarily from cash used for principal payments of $5.3 million made for financed equipment, partially offset by proceeds of $0.9 million from the issuance of common stock from option exercises and our 2021 ESPP.
In the year ended December 31, 2024, net cash provided by financing activities was $82.5 million primarily from proceeds of $82.4 million from the issuance of common stock from a public offering and the Prior Sales Agreement and proceeds of $4.2 million from the issuance of common stock from option exercises and our 2021 ESPP, partially offset by principal payments of $4.0 million made for financed equipment.
We incurred a net loss of $103.1 million for the year ended December 31, 2024, compared to a net loss of $110.6 million for the year ended December 31, 2023. Research and development expenses increased by $15.8 million, or 33%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
We incurred a net loss of $115.2 million for the year ended December 31, 2025 compared to a net loss of $103.1 million for the year ended December 31, 2024. Research and development expenses increased by $17.6 million, or 27%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Selling, general, and administrative Selling, general, and administrative expenses include personnel-related costs (comprised of salaries, benefits and share-based compensation) for executive, business development, legal, finance, human resources, information technology and other administrative functions. Business development expenses include costs associated with attending conferences and other promotion efforts of our Integrated Drug Creation platform.
Selling, general, and administrative Selling, general, and administrative expenses include personnel-related costs (comprised of salaries, benefits and share-based compensation) for executive, business development, legal, finance, human resources, information technology and other administrative functions.
Our equipment is used most actively as part of our lab operations. We expect depreciation expense to fluctuate in future periods in line with continued growth and compute demands in absolute dollars as we purchase additional equipment.
Our equipment is used most actively as part of our lab operations. We expect depreciation expense to fluctuate in future periods in line with continued growth in absolute dollars as we purchase additional equipment. Other income (expense) Interest expense Interest expense, net, consists primarily of interest related to borrowings under our term debt and financed laboratory equipment.
Subsequent to December 31, 2024 , the Company issued and sold 5,269,192 shares of common stock for net proceeds of $21.7 million pursuant to the Sales Agreement. On March 1, 2024, we closed the sale of an aggregate of 19,205,000 shares of our common stock, pursuant to an underwriting agreement with Morgan Stanley & Co.
During the year ended December 31, 2025, the Company issued 927,855 shares and received $3.5 million in net proceeds from the sale of securities pursuant to the Sales Agreement. Public offerings of common stock On March 1, 2024, we sold an aggregate of 19,205,000 shares of our common stock, pursuant to an underwriting agreement with Morgan Stanley & Co.
General and administrative expenses include certain professional service expenses such as, external legal, accounting, and other consultants, as well as certain technology costs and allocated facility costs. These expenses are exclusive of depreciation and amortization. As we grow our operations, we expect personnel-related costs to increase in absolute dollars and we expect to actively manage other general and administrative expenses.
General and administrative expenses include certain professional service expenses, such as external legal, accounting, and other consultants, as well as insurance, certain technology costs, and allocated facility costs. These expenses are exclusive of depreciation and amortization.
Cash flows from investing activities In the year ended December 31, 2024, net cash used in investing activities was $41.6 million primarily from purchases of short-term investments of $186.1 million, partially offset by cash provided by maturities of short-term investments of $144.0 million. 93 In the year ended December 31, 2023, net cash provided by investing activities was $81.9 million primarily from maturities of short-term investments of $229.9 million, partially offset by cash used for purchases of short-term investments of $147.3 million and purchases of lab equipment of $0.9 million.
In the year ended December 31, 2024, net cash used in investing activities was $41.6 million primarily from purchases of marketable securities of $186.1 million, partially offset by maturities of marketable securities of $144.0 million. Cash flows from financing activities In the year ended December 31, 2025, net cash provided by financing activities was $105.9 million.
The net cash provided resulted primarily from proceeds of $82.4 million from the issuance of common stock from a public offering and the Sales Agreement, pursuant to the “at the market offering” program, and proceeds of $4.2 million from the issuance of common stock from stock option exercises and our 2021 ESPP, partially offset by principal payments of $4.0 million made for financed equipment.
The net cash provided resulted primarily from aggregate proceeds of $105.8 million from the issuance of common stock pursuant to the PIPE with AMD, the issuance of common stock pursuant to our July 2025 underwritten offering and pursuant to the Sales Agreement and Prior Sales Agreement, and proceeds of $3.3 million from the issuance of common stock from stock option exercises and our 2021 ESPP, partially offset by principal payments of $3.2 million made for financed equipment.
Liquidity and Capital Resources Overview As of December 31, 2024, we had $112.4 million of cash, cash equivalents and short-term investments. We have incurred net operating losses since inception. As of December 31, 2024, our accumulated deficit was $509.6 million.
Liquidity and Capital Resources Overview As of December 31, 2025, we had $144.3 million of cash, cash equivalents and marketable securities. We have incurred net operating losses since inception. As of December 31, 2025, our accumulated deficit was $624.8 million.
We expect to continue to incur significant expenses in connection with our ongoing activities, including as we: • develop our internally developed programs across diverse indications, including the advancement of these product candidates through preclinical and clinical development; • continue to engage in discovery, research and development efforts and scale our activities to meet potential demand from both new and existing partners; • execute an effective business development strategy to drive adoption of our Integrated Drug Creation platform by new and existing partners and, as relevant, to identify partners for internally developed programs; • develop, acquire, in-license or otherwise obtain technologies that enable us to expand our Integrated Drug Creation platform capabilities; and • attract, retain and motivate highly qualified personnel.
As of December 31, 2025, we had an accumulated deficit of $624.8 million and cash equivalents and marketable securities totaling $144.3 million. 95 We expect to continue to incur significant expenses in connection with our ongoing activities, including as we: • develop ABS-201 and other internally developed programs across diverse indications, including the advancement of these product candidates through preclinical and clinical development; • continue to engage in discovery, research and development efforts and scale our activities through our existing and potential new partnerships; • develop, acquire, in-license or otherwise obtain technologies that enable us to expand our Integrated Drug Creation platform capabilities; and • attract, retain and motivate highly qualified personnel to join Absci in our mission.
Cash Flows The following summarizes our cash flows (In thousands): For the Years Ended December 31, 2024 2023 Net cash provided by (used in) Operating activities (72,402) (64,636) Investing activities (41,577) 81,944 Financing activities 82,526 (4,483) Net (decrease) increase in cash, cash equivalents, and restricted cash $ (31,453) $ 12,825 Cash flows from operating activities In the year ended December 31, 2024, net cash used in operating activities was $72.4 million and consisted primarily of a net loss of $103.1 million adjusted for non-cash items, including depreciation and amortization expense of $13.4 million, stock-based compensation of $19.5 million, and impairment of $1.4 million for assets that met the held for sale criteria during the period, partially offset by $3.7 million of accretion of discount on short-term investments.
In the year ended December 31, 2024, net cash used in operating activities was $72.4 million and consisted primarily of a net loss of $103.1 million adjusted for non-cash items, including depreciation and amortization expense of $13.4 million, stock-based compensation expense of $19.5 million, impairment of $1.4 million for asset that met the held for sale criteria during the period, partially offset by $3.7 million of accretion of discount on marketable securities.
In certain drug creation agreements that require a portion of the contract consideration to be received in advance at the commencement of the contract, such advance payment is initially recorded as a contract liability.
In certain drug creation agreements 102 that require a portion of the contract consideration to be received in advance at the commencement of the contract, such advance payment is initially recorded as a contract liability. Accrued preclinical and clinical development expenses We expense all research and development costs in the periods in which they are incurred.
We will pay the Sales Agent a commission up to 3.0% of the gross sales proceeds of any shares sold under the Sales Agreement. As of December 31, 2024, we have issued 377,996 shares and received $1.6 million net proceeds from the sale of securities registered pursuant to the Sales Agreement.
The Company agreed to pay the Sales Agent a commission up to 3.0% of the gross sales proceeds of any shares sold under the Prior Sales Agreement. During the year ended December 31, 2025, the Company issued 10,377,752 shares and received $35.7 million in net proceeds from the sale of securities pursuant to the Prior Sales Agreement.
For the years ended December 31, 2024 and 2023, two partners represented approximately 99% and 89% of partner program revenue, respectively.
For the year ended December 31, 2025, three partners represented 95% of partner program revenue. For the year ended December 31, 2024, two partners represented 99% of partner program revenue.
Goodwill impairment We performed a quantitative impairment evaluation of goodwill as of June 30, 2023 and recorded an impairment charge in the amount of $21.3 million . 91 Other income (expense) Interest expense Interest expense was $0.6 million for the year ended December 31, 2024, compared to $1.0 million for the year ended December 31, 2023, representing a decrease of $0.4 million, or 44%, primarily attributable to decreased finance lease and long-term debt obligations.
Other income (expense) Interest expense Interest expense was $0.2 million for the year ended December 31, 2025, compared to $0.6 million for the year ended December 31, 2024, representing a decrease of $0.4 million, or 63%. This decrease was primarily attributable to decreased finance lease and long-term debt obligations.
Results of Operations The results of operations presented below should be reviewed in conjunction with our consolidated financial statements and notes included elsewhere in this Annual Report.
Other income, net Other income, net consists primarily of interest income from our cash, cash equivalents and marketable securities and realized and unrealized gains and losses on foreign currency transactions. 97 Results of Operations The results of operations presented below should be reviewed in conjunction with our consolidated financial statements and notes included elsewhere in this Annual Report.
These fees are earned and paid at various points throughout the terms of these agreements including upfront, upon the achievement of specified project-based milestones, and throughout the program.
These fees are earned and paid at various points throughout the terms of these agreements including upfront, upon the achievement of specified project-based milestones, and throughout the program. Future revenue may also be earned from our partners’ achievements of certain clinical, regulatory, and commercial milestones and through royalties as a percentage of net product sales.
Net cash used in operations increased by $7.8 million year-over-year primarily due to increased research and development costs, including ABS-101 IND-enabling studies.
Net cash used in operations increased by $20.5 million year-over-year primarily due to increased research and development costs, including external preclinical and clinical development costs related to our internally developed programs.
Private Investment in Public Equity On January 7, 2025, we closed the sale of an aggregate of 5,714,285 shares of our common stock, through a private investment in public equity (PIPE) to Advanced Micro Devices, Inc. (AMD), at an offering price of $3.50 per share. We received total net proceeds from the offering of $20.0 million.
Private investment in public equity In January 2025, we entered into a strategic collaboration with AMD and sold an aggregate of 5,714,285 shares of our common stock to AMD for net proceeds of $20.0 million through a private investment in public equity (PIPE).
Other income, net Other income, net, was $6.4 million for the year ended December 31, 2024, compared to $6.1 million for the year ended December 31, 2023, representing an increase of $0.3 million, or 6%, primarily attributable to increases in investment income from cash, cash equivalents and short-term investments due to higher balances and interest rates, offset by impairment of a non-marketable equity investment.
Other income, net Other income, net, was $5.4 million for the year ended December 31, 2025, compared to $6.4 million for the year ended December 31, 2024, representing a decrease of $1.0 million, or 16%, primarily attributable to realized and unrealized gains and losses on foreign currency transactions and a decrease in investment income from cash, cash equivalents and investments.
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations Overview We are a data-first generative AI drug creation company with the mission to design differentiated antibody therapeutics. Our Integrated Drug Creation platform comprises, in part, cutting edge generative AI models aimed at designing better antibody therapeutics, including against hard-to-drug targets.
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations Overview We are a clinical-stage biopharmaceutical company using an AI-native approach to develop differentiated antibody therapeutics. Our integrated drug creation platform combines Origin-1, our generative design model, with rapid validation using our lab-in-the-loop.
Operating expenses The following table summarizes our operating expenses for the years ended December 31, 2024 and 2023 (In thousands, except for percentages): For the Years Ended December 31, 2024 2023 $ Change % Change Operating expenses Research and development $ 63,859 $ 48,067 $ 15,792 33 % Selling, general and administrative 36,174 37,832 (1,658) (4) % Depreciation and amortization 13,389 13,999 (610) (4) % Goodwill impairment — 21,335 (21,335) 100 % Total operating expenses $ 113,422 $ 121,233 $ (7,811) (6) % Research and development Research and development expenses increased by $15.8 million, or 33%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Operating expenses The following tables summarize our operating expenses for the years ended December 31, 2025 and 2024 (In thousands, except for percentages): For the Years Ended December 31, 2025 2024 $ Change % Change Operating expenses Research and development $ 81,418 $ 63,859 $ 17,559 27 % Selling, general and administrative 35,058 36,174 (1,116) (3) % Depreciation and amortization 11,742 13,389 (1,647) (12) % Gain on settlement of contingent consideration (5,101) — (5,101) 100 % Total operating expenses $ 123,117 $ 113,422 $ 9,695 9 % Research and development Research and development expenses increased by $17.6 million, or 27%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Cash flows from financing activities In the year ended December 31, 2024, net cash provided by financing activities was $82.5 million.
Cash flows from investing activities In the year ended December 31, 2025, net cash used in investing activities was $50.2 million primarily from purchases of marketable securities of $119.9 million, partially offset by cash provided by maturities of marketable securities of $69.5 million.
We will remain an emerging growth company until the earlier of (a) the last day of the fiscal year in which we have total annual gross revenue of $1.235 billion or more; (b) December 31, 2026, the last day of 95 the fiscal year following the fifth anniversary of the date of the completion of our IPO; (c) the date on which we have issued more than $1.0 billion in nonconvertible debt during the previous three years; or (d) the date we qualify as a “large accelerated filer,” which requires the market value of our common stock that are held by non-affiliates to exceed $700.0 million as of the prior June 30th.
We will remain a smaller reporting company until (a) the last day of the fiscal year in which we have total annual gross revenue of less than $100 million and the market value of our common stock held by non-affiliates exceeds $700.0 million as of the prior June 30th, or (b) the last day of the fiscal year in which we have total annual gross revenue exceeding $100 million and the market value of our common stock held by non-affiliates exceeds $250.0 million.
The decrease was primarily attributable to a decrease in personnel costs of $4.2 million, decreased other administrative costs of $2.7 million, offset by a $5.2 million increase in stock-based compensation.
The decrease was primarily attributable to a decrease of $1.5 million in personnel and stock-based compensation costs. Depreciation and amortization Depreciation and amortization expense decreased by $1.6 million, or 12%, for the year ended December 31, 2025 compared to the year ended December 31, 2024, primarily due to disposals of lab equipment.
The increase was primarily attributable to the advancement of our drug creation programs representing $11.8 million of this increase, which also included direct costs associated with IND-enabling studies for ABS-101, an increase in stock-based compensation of $2.8 million, and an increase in impairment expense of $0.9 million for assets.
The increase was primarily attributable to the advancement of our drug creation programs representing $17.3 million of this increase, including $13.1 million of direct costs associated with external preclinical and clinical development of our internally developed programs including ABS-101 and ABS-201, and an increase of $1.9 million of personnel costs and stock-based compensation, offset by a decrease of $1.6 million in other lab costs. 98 Selling, general and administrative expenses Selling, general, and administrative expenses decreased by $1.1 million, or 3%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
In the year ended December 31, 2023, net cash used in operating activities was $64.6 million and consisted primarily of a net loss of $110.6 million adjusted for non-cash items, including depreciation and amortization expense of $14.0 million, stock-based compensation of $11.4 million, and goodwill impairment of $21.3 million, partially offset by $2.7 million of accretion of discount on short-term investments.
The issuance of stock to AMD was at a premium of approximately $2.5 million over the market price on the issuance date. 100 Cash Flows The following summarizes our cash flows (In thousands): For the Years Ended December 31, 2025 2024 Net cash provided by (used in) Operating activities (92,925) (72,402) Investing activities (50,160) (41,577) Financing activities 105,949 82,526 Net decrease in cash, cash equivalents, and restricted cash $ (37,136) $ (31,453) Cash flows from operating activities In the year ended December 31, 2025, net cash used in operating activities was $92.9 million and consisted primarily of a net loss of $115.2 million adjusted for non-cash items, including depreciation and amortization expense of $11.7 million, stock-based compensation expense of $18.3 million, and a net decrease in operating assets and liabilities in the amount of $0.4 million.