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    SLS

    SELLAS Life Sciences Group, Inc.

    Company overview

    Market capitalization
    $2.34B
    Employees
    13
    Latest publication
    2026-09-29
    About SELLAS Life Sciences Group, Inc.

    SELLAS Life Sciences Group, Inc., a late-stage clinical biopharmaceutical company, focuses on the development of novel therapeutics for various cancer indications in the United States. The company's lead product candidate is galinpepimut-S (GPS), a peptide immunotherapy directed against the Wilms tumor 1, antigen; and SLS009 (tambiciclib), a selective small molecule cyclin-dependent kinase 9, or CDK9, inhibitor. It has a strategic collaboration with Merck & Co., Inc. to evaluate GPS as it is administered in combination with PD1 blocker pembrolizumab in a Phase 1/2 clinical trial enrolling patients in up to five cancer indications, including hematologic malignancies and solid tumors; GenFleet Therapeutics (Shanghai), Inc. for the development and commercialization of GFH009; and Memorial Sloan Kettering Cancer Center for developing and commercializing MSK's WT1 peptide vaccine technology. SELLAS Life Sciences Group, Inc. is headquartered in New York, New York.

    Company website

    Financial statements

    Income Quarterly

    Exact reported values; units shown beside each amount. Missing values are —.
    MetricQ1 20262026-03-31 · USDQ4 20252025-12-31 · USDQ3 20252025-09-30 · USDQ2 20252025-06-30 · USDQ1 20252025-03-31 · USDQ4 20242024-12-31 · USDQ3 20242024-09-30 · USDQ2 20242024-06-30 · USD
    Total Revenue0USD0USD0USD0USD0USD0USD0USD0USD
    Research Development5,129,000USD4,730,000USD4,216,000USD3,871,000USD3,205,000USD4,437,000USD4,362,000USD5,186,000USD
    Selling General Administrative4,123,000USD3,525,000USD2,867,000USD3,002,000USD2,858,000USD2,481,000USD2,967,000USD2,435,000USD
    Total Operating Expenses9,252,000USD8,255,000USD7,083,000USD6,873,000USD6,063,000USD6,918,000USD7,329,000USD7,621,000USD
    Operating Income-9,252,000USD-8,255,000USD-7,083,000USD-6,873,000USD-6,063,000USD-6,918,000USD-7,329,000USD-7,621,000USD
    Interest Income845,000USD597,000USD292,000USD272,000USD250,000USD181,000USD221,000USD151,000USD
    Net Interest Income845,000USD597,000USD292,000USD272,000USD250,000USD181,000USD221,000USD151,000USD
    Income Before Tax-8,407,000USD-7,658,000USD-6,791,000USD-6,601,000USD-5,813,000USD-6,737,000USD-7,108,000USD-7,470,000USD
    Net Income-8,407,000USD-7,658,000USD-6,791,000USD-6,601,000USD-5,813,000USD-6,737,000USD-7,108,000USD-7,470,000USD
    Net Income From Continuing Ops-8,407,000USD-7,658,000USD-6,791,000USD-6,601,000USD-5,813,000USD-6,737,000USD-7,108,000USD-7,470,000USD
    Ebitda-9,252,000USD-8,255,000USD292,000USD-6,601,000USD-6,063,000USD-16,382,000USD-7,329,000USD-7,621,000USD
    Total Other Income Expense Net845,000USD597,000USD292,000USD272,000USD250,000USD181,000USD221,000USD151,000USD
    Ebit——-6,791,000USD-6,873,000USD-6,063,000USD-6,737,000USD-7,329,000USD-15,242,000USD
    Depreciation And Amortization——7,083,000USD——-9,645,000USD—7,621,000USD
    Income Tax Expense—————9,645,000USD—-7,621,000USD
    SourceLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacy

    Income Yearly

    Exact reported values; units shown beside each amount. Missing values are —.
    MetricFY 20252025-12-31 · USDFY 20242024-12-31 · USDFY 20232023-12-31 · USDFY 20222022-12-31 · USDFY 20212021-12-31 · USDFY 20202020-12-31 · USDFY 20192019-12-31 · USDFY 20182018-12-31 · USD
    Total Revenue0USD0USD0USD1,000,000USD7,600,000USD1,900USD0USD0USD
    Research Development16,022,000USD19,096,000USD24,007,000USD30,268,000USD21,374,000USD9,282,000USD10,118,000USD18,317,000USD
    Selling General Administrative12,252,000USD12,417,000USD13,862,000USD12,582,000USD11,320,000USD9,600,000USD9,923,000USD12,772,000USD
    Total Operating Expenses28,274,000USD31,513,000USD37,869,000USD42,850,000USD32,694,000USD-18,882,000USD20,041,000USD31,589,000USD
    Operating Income-28,274,000USD-31,513,000USD-37,869,000USD-41,950,000USD-25,294,000USD-16,982,000USD-20,041,000USD-31,589,000USD
    Interest Income1,411,000USD632,000USD642,000USD317,000USD6,000USD26,000USD118,000USD266,000USD
    Net Interest Income1,411,000USD632,000USD642,000USD317,000USD6,000USD26,000USD118,000USD-266,000USD
    Income Before Tax-26,863,000USD-30,881,000USD-37,340,000USD-41,301,000USD-20,936,000USD-16,774,000USD-19,373,000USD-29,048,000USD
    Net Income-26,863,000USD-30,881,000USD-37,340,000USD-41,301,000USD-20,699,000USD-16,757,000USD-19,292,000USD-27,670,000USD
    Net Income From Continuing Ops-26,863,000USD-30,881,000USD-38,325,000USD-41,301,000USD-20,699,000USD-16,757,000USD-19,292,000USD-27,648,000USD
    Ebitda-28,274,000USD632,000USD529,000USD-31,493,000USD-18,321,000USD26,524,300USD668,000USD-33,396,000USD
    Total Other Income Expense Net1,411,000USD632,000USD529,000USD649,000USD4,358,000USD16,965,226USD668,000USD2,541,000USD
    Ebit—-30,881,000USD-37,340,000USD-31,950,000USD-19,594,000USD-16,757,000USD-16,540,000USD-35,703,000USD
    Depreciation And Amortization—31,513,000USD37,869,000USD457,000USD1,273,000USD282,000USD17,208,000USD22,039,000USD
    Cost Of Revenue——0USD100,000USD200,000USD377,000USD—0USD
    Gross Profit——0USD900,000USD7,400,000USD1,900USD—0USD
    Income Tax Expense——-37,869,000USD-649,000USD-237,000USD-17,000USD-81,000USD-1,378,000USD
    Interest Expense———649,000USD4,358,000USD390,000USD118,000USD266,000USD
    Tax Provision———0USD-237,000USD-17,000USD-81,000USD-1,378,000USD
    Net Income Applicable To Common Shares———-41,301,000USD-20,699,000USD-16,835,000USD-27,951,000USD-41,251,000USD
    Unclassified Operating Expenses—————-37,764,000USD——
    Reconciled Depreciation—————282,000USD0USD0USD
    Non Operating Income Net Other—————208,000USD——
    SourceLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacy

    Balance sheet Quarterly

    Exact reported values; units shown beside each amount. Missing values are —.
    MetricQ2 20262026-06-30 · USDQ1 20262026-03-31 · USDQ4 20252025-12-31 · USDQ3 20252025-09-30 · USDQ2 20252025-06-30 · USDQ1 20252025-03-31 · USDQ4 20242024-12-31 · USDQ3 20242024-09-30 · USD
    Total Assets145,382,000USD114,177,000USD78,345,000USD51,555,000USD32,305,000USD34,956,000USD19,432,000USD26,505,000USD
    Cash And Equivalents138,343,000USD———————
    Total Current Assets142,505,000USD111,169,000USD75,211,000USD49,051,000USD29,447,000USD31,973,000USD16,327,000USD24,035,000USD
    Other Current Assets4,062,000USD3,972,000USD3,318,000USD4,631,000USD4,150,000USD3,576,000USD2,441,000USD3,004,000USD
    Total Liabilities7,726,000USD———————
    Total Current Liabilities7,569,000USD6,456,000USD7,017,000USD5,925,000USD5,999,000USD6,888,000USD9,510,000USD10,613,000USD
    Other Current Liabilities3,903,000USD———————
    Total Stockholder Equity137,656,000USD107,412,000USD70,871,000USD45,630,000USD26,149,000USD27,759,000USD9,465,000USD15,892,000USD
    Total Equity Including Noncontrolling Interest137,656,000USD———————
    Property Plant Equipment Net710,000USD839,000USD963,000USD556,000USD683,000USD806,000USD925,000USD513,000USD
    Goodwill1,914,000USD———————
    Accounts Payable3,086,000USD3,633,000USD2,948,000USD2,305,000USD3,336,000USD3,756,000USD3,500,000USD4,547,000USD
    Short Term Debt580,000USD562,000USD544,000USD599,000USD580,000USD561,000USD544,000USD576,000USD
    Common Stock20,000USD18,000USD15,000USD12,000USD10,000USD9,000USD7,000USD6,000USD
    Retained Earnings-293,000,000USD-283,395,000USD-274,988,000USD-267,330,000USD-260,539,000USD-253,938,000USD-248,125,000USD-241,388,000USD
    Total Liab—6,765,000USD7,474,000USD5,925,000USD6,156,000USD7,197,000USD9,967,000USD10,613,000USD
    Other Current Liab—2,261,000USD3,525,000USD3,021,000USD2,083,000USD2,571,000USD5,466,000USD5,490,000USD
    Capital Stock—18,000USD15,000USD12,000USD10,000USD9,000USD7,000USD6,000USD
    Good Will—1,914,000USD1,914,000USD1,914,000USD1,914,000USD1,914,000USD1,914,000USD1,914,000USD
    Cash—107,197,000USD71,893,000USD44,420,000USD25,297,000USD28,397,000USD13,886,000USD21,031,000USD
    Cash And Short Term Investments—107,197,000USD71,893,000USD44,420,000USD25,297,000USD28,397,000USD13,886,000USD21,031,000USD
    Net Debt—-106,326,000USD-70,892,000USD-43,821,000USD-24,560,000USD-27,527,000USD-12,885,000USD-20,455,000USD
    Short Long Term Debt Total—871,000USD1,001,000USD599,000USD737,000USD870,000USD1,001,000USD576,000USD
    Property Plant Equipment Gross—839,000USD963,000USD556,000USD683,000USD806,000USD925,000USD513,000USD
    Common Stock Shares Outstanding—172,481,541shares153,103,459shares108,396,000shares98,558,567shares87,760,319shares73,987,797shares68,254,021shares
    Non Current Assets Total—3,008,000USD3,134,000USD2,504,000USD2,858,000USD2,983,000USD3,305,000USD2,470,000USD
    Non Current Liabilities Total—309,000USD457,000USD0USD157,000USD309,000USD457,000USD0USD
    Non Currrent Assets Other—255,000USD257,000USD34,000USD261,000USD263,000USD466,000USD43,000USD
    Net Working Capital—104,713,000USD68,194,000USD43,126,000USD23,448,000USD25,085,000USD6,817,000USD13,422,000USD
    Unclassified Equity—390,771,000USD345,829,000USD312,936,000USD286,668,000USD281,679,000USD257,576,000USD257,268,000USD
    Other Assets——————-200,000USD—
    Short Term Investments———————100,000USD
    SourceDisclosureDeterministicFinalLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacy

    Balance sheet Yearly

    Exact reported values; units shown beside each amount. Missing values are —.
    MetricFY 20252025-12-31 · USDFY 20242024-12-31 · USDFY 20232023-12-31 · USDFY 20222022-12-31 · USDFY 20212021-12-31 · USDFY 20202020-12-31 · USDFY 20192019-12-31 · USDFY 20182018-12-31 · USD
    Total Assets78,345,000USD19,432,000USD6,219,000USD20,943,000USD26,427,000USD46,049,000USD16,609,000USD16,915,000USD
    Other Current Assets3,318,000USD2,441,000USD642,000USD631,000USD1,589,000USD495,000USD657,000USD501,000USD
    Total Liab7,474,000USD9,967,000USD14,195,000USD16,092,000USD6,080,000USD18,088,000USD10,516,000USD11,670,000USD
    Total Stockholder Equity70,871,000USD9,465,000USD-7,976,000USD4,851,000USD20,347,000USD27,961,000USD6,093,000USD5,245,000USD
    Other Current Liab3,525,000USD5,466,000USD7,650,000USD11,786,000USD2,640,000USD1,913,000USD1,171,000USD2,219,000USD
    Common Stock15,000USD7,000USD3,000USD2,000USD2,000USD1,000USD1,000USD2,000USD
    Capital Stock15,000USD7,000USD3,000USD2,000USD2,000USD1,000USD5,000USD2,000USD
    Retained Earnings-274,988,000USD-248,125,000USD-217,244,000USD-179,904,000USD-138,603,000USD-117,904,000USD-101,147,000USD-81,855,000USD
    Good Will1,914,000USD1,914,000USD1,914,000USD1,914,000USD1,914,000USD1,914,000USD1,914,000USD1,914,000USD
    Cash71,893,000USD13,886,000USD2,530,000USD17,125,000USD21,455,000USD35,302,000USD7,277,000USD5,337,000USD
    Cash And Short Term Investments71,893,000USD13,886,000USD2,530,000USD17,125,000USD21,455,000USD35,302,000USD7,277,000USD5,337,000USD
    Total Current Assets75,211,000USD16,327,000USD3,172,000USD17,756,000USD23,044,000USD36,925,000USD8,242,000USD5,838,000USD
    Total Current Liabilities7,017,000USD9,510,000USD13,735,000USD15,515,000USD4,982,000USD12,336,000USD5,290,000USD5,974,000USD
    Net Debt-70,892,000USD-12,885,000USD-1,624,000USD-16,180,000USD-20,647,000USD-34,311,000USD-7,060,000USD-5,337,000USD
    Short Term Debt544,000USD544,000USD446,000USD372,000USD198,000USD166,000USD217,000USD—
    Short Long Term Debt Total1,001,000USD1,001,000USD906,000USD945,000USD808,000USD991,000USD217,000USD—
    Accounts Payable2,948,000USD3,500,000USD5,639,000USD3,357,000USD2,144,000USD4,657,000USD3,902,000USD3,755,000USD
    Property Plant Equipment Net963,000USD925,000USD858,000USD874,000USD723,000USD896,000USD217,000USD—
    Property Plant Equipment Gross963,000USD925,000USD858,000USD874,000USD723,000USD896,000USD217,000USD—
    Common Stock Shares Outstanding109,051,215shares61,202,412shares27,777,111shares19,395,709shares15,481,113shares7,977,104shares2,558,755shares261,542shares
    Non Current Assets Total3,134,000USD3,305,000USD3,047,000USD3,187,000USD3,382,999USD9,124,000USD8,367,000USD11,077,000USD
    Non Current Liabilities Total457,000USD457,000USD460,000USD577,000USD1,097,999USD5,752,000USD5,226,000USD5,696,000USD
    Non Currrent Assets Other257,000USD466,000USD275,000USD399,000USD593,999USD614,000USD536,000USD-765,000USD
    Net Working Capital68,194,000USD6,817,000USD-10,563,000USD2,241,000USD18,062,000USD24,589,000USD2,952,000USD-136,000USD
    Unclassified Equity345,829,000USD257,576,000USD209,262,000USD184,751,000USD158,946,000USD145,863,000USD107,234,000USD87,096,000USD
    Other Assets—-200,000USD1USD399,000USD594,000USD7,210,000USD536,000USD663,000USD
    Short Term Investments——100,000USD—————
    Other Liab———4,000USD336,000USD4,927,000USD5,226,000USD5,696,000USD
    Net Tangible Assets———2,937,000USD18,433,000USD20,347,000USD4,179,000USD3,345,000USD
    Current Deferred Revenue————2,479,000USD5,600,000USD——
    Non Current Liabilities Other————296,000USD4,633,000USD4,964,000USD5,339,000USD
    Unclassified Current Liabilities————-2,479,000USD———
    Intangible Assets—————5,700,000USD5,700,000USD8,500,000USD
    Deferred Long Term Liab—————239,000USD262,000USD357,000USD
    Net Receivables—————1,128,000USD308,000USD—
    Inventory—————465,000USD573,000USD—
    Accumulated Other Comprehensive Income—————0USD——
    Unclassified Non Current Assets—————-7,210,000USD——
    Unclassified Non Current Liabilities—————-4,047,000USD-5,226,000USD-5,696,000USD
    SourceLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacy

    Cash flow Quarterly

    Exact reported values; units shown beside each amount. Missing values are —.
    MetricQ1 20262026-03-31 · USDQ4 20252025-12-31 · USDQ3 20252025-09-30 · USDQ2 20252025-06-30 · USDQ1 20252025-03-31 · USDQ4 20242024-12-31 · USDQ3 20242024-09-30 · USDQ2 20242024-06-30 · USD
    Net Income-8,407,000USD-7,658,000USD-6,791,000USD-6,601,000USD-5,813,000USD-6,737,000USD-7,108,000USD-7,470,000USD
    Stock Based Compensation798,000USD447,000USD503,000USD501,000USD505,000USD373,000USD381,000USD334,000USD
    Other Non Cash Items951,000USD154,000USD147,000USD149,000USD147,000USD148,000USD137,000USD-921,000USD
    Change In Working Capital-1,390,000USD2,136,000USD-927,000USD-1,379,000USD-3,909,000USD-937,000USD-1,216,000USD-1,625,000USD
    Total Cash From Operating Activities-8,846,000USD-4,921,000USD-7,068,000USD-7,330,000USD-9,070,000USD-7,153,000USD-7,806,000USD-9,682,000USD
    Capital Expenditures0USD0USD0USD0USD0USD0USD0USD0USD
    Free Cash Flow-8,846,000USD-4,921,000USD-7,068,000USD-7,330,000USD-9,070,000USD-7,153,000USD-7,806,000USD-9,682,000USD
    Total Cash From Financing Activities44,150,000USD32,394,000USD26,091,000USD4,230,000USD23,581,000USD8,000USD19,690,000USD414,000USD
    Issuance Of Capital Stock0USD0USD0USD21,000USD23,030,000USD71,000USD19,488,000USD59,000USD
    Change In Cash35,304,000USD27,473,000USD19,023,000USD-3,100,000USD14,511,000USD-7,145,000USD11,884,000USD-9,268,000USD
    Begin Period Cash Flow71,893,000USD44,420,000USD25,397,000USD28,497,000USD13,986,000USD21,131,000USD9,247,000USD18,515,000USD
    End Period Cash Flow107,197,000USD71,893,000USD44,420,000USD25,397,000USD28,497,000USD13,986,000USD21,131,000USD9,247,000USD
    Other Cashflows From Financing Activities44,150,000USD-527,000USD26,091,000USD4,230,000USD551,000USD-63,000USD202,000USD355,000USD
    Unclassified Financing Cash Flow—32,921,000USD——————
    Investments—————0USD0USD—
    SourceLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacy

    Cash flow Yearly

    Exact reported values; units shown beside each amount. Missing values are —.
    MetricFY 20252025-12-31 · USDFY 20242024-12-31 · USDFY 20232023-12-31 · USDFY 20222022-12-31 · USDFY 20212021-12-31 · USDFY 20202020-12-31 · USDFY 20192019-12-31 · USDFY 20182018-12-31 · USD
    Net Income-26,863,000USD-30,881,000USD-37,340,000USD-41,301,000USD-20,699,000USD-16,757,000USD-19,292,000USD-27,670,000USD
    Stock Based Compensation1,956,000USD1,564,000USD1,390,000USD1,726,000USD1,011,000USD578,000USD573,000USD395,000USD
    Other Non Cash Items596,999USD561,000USD1,195,000USD10,125,000USD-4,164,000USD-87,000USD586,000USD4,416,000USD
    Change In Working Capital-4,078,999USD-6,646,000USD3,345,000USD5,641,000USD-7,615,000USD5,590,000USD-1,112,000USD-10,006,000USD
    Total Cash From Operating Activities-28,389,000USD-35,402,000USD-31,410,000USD-23,809,000USD-26,021,000USD-10,417,000USD-17,643,000USD-30,422,000USD
    Capital Expenditures0USD0USD-5,500,000USD-4,500,000USD0USD0USD0USD0USD
    Free Cash Flow-28,389,000USD-35,402,000USD-36,910,000USD-28,309,000USD-26,021,000USD-10,417,000USD-17,643,000USD-30,422,000USD
    Total Cash From Financing Activities86,296,000USD46,758,000USD22,315,000USD24,079,000USD12,074,000USD38,442,000USD19,569,000USD23,123,000USD
    Issuance Of Capital Stock23,051,000USD46,164,000USD19,751,000USD23,994,000USD9,005,000USD29,599,000USD15,971,000USD31,211,000USD
    Change In Cash57,907,000USD11,356,000USD-14,595,000USD-4,230,000USD-13,947,000USD28,025,000USD1,926,000USD-7,299,000USD
    Begin Period Cash Flow13,986,000USD2,630,000USD17,225,000USD21,455,000USD35,402,000USD7,377,000USD5,451,000USD12,750,000USD
    End Period Cash Flow71,893,000USD13,986,000USD2,630,000USD17,225,000USD21,455,000USD35,402,000USD7,377,000USD5,451,000USD
    Other Cashflows From Financing Activities-527,000USD594,000USD90,000USD85,000USD3,069,000USD8,843,000USD3,598,000USD9,647,000USD
    Unclassified Financing Cash Flow63,772,000USD—22,256,000USD——-8,535,000USD-3,598,000USD-9,647,000USD
    Investments—0USD-5,500,000USD-4,500,000USD0USD——0USD
    Total Cashflows From Investing Activities——-5,500,000USD-4,500,000USD-4,500,000USD-4,500,000USD-4,500,000USD—
    Sale Purchase Of Stock——-31,000USD——38,134,000USD19,569,000USD31,211,000USD
    Other Cashflows From Investing Activities——-5,500,000USD-4,500,000USD————
    Unclassified Investing Cash Flow——11,000,000USD9,000,000USD-4,500,000USD-4,500,000USD-4,500,000USD—
    Depreciation———457,000USD5,685,000USD282,000USD1,697,000USD3,759,000USD
    Change To Liabilities———1,213,000USD-8,113,000USD4,764,000USD-1,036,000USD-10,218,000USD
    Change To Account Receivables—————308,000USD——
    Cash And Cash Equivalents Changes—————28,025,000USD1,926,000USD-7,299,000USD
    Dividends Paid——————0USD-487,000USD
    Net Borrowings———————-7,601,000USD
    Unclassified Operating Cash Flow———————-1,316,000USD
    SourceLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacyLegacy providerLegacy

    Operating metrics

    No operating metrics are currently published for this company.

    Revenue breakdown

    No revenue breakdown is currently published for this company.

    Periods follow company fiscal calendars. Quarterly, annual and year-to-date amounts are shown separately. Missing values are not zero. Data may be delayed, incomplete or corrected; follow the disclosure links to verify figures.