Company research
Boundless Bio, Inc.
CIK 1782303Updated Nov 11, 2026
SecurityBOLD · NASDAQ · equity
BOLD price & chart
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NASDAQ:BOLD on TradingView ↗About the company
Boundless Bio is a clinical-stage oncology company dedicated to unlocking a new paradigm in cancer therapeutics that addresses the significant unmet need in patients with oncogene amplified tumors. For more information, visit https://boundlessbio.com/.
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Recent filings
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Financials
FY 2025 · USDSource
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balance sheet · annual statements
| Line item | Q3 2025 | Q3 2024 | Q2 2026 | Q2 2025 | Q2 2024 | Q1 2026 | Q1 2025 | Q1 2024 | FY 2025 | FY 2024 | FY 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ASSETS | |||||||||||
| AssetsUSD | 168,721,000Source | 175,093,000Source | 73,744,000Source | 179,453,000Source | 188,203,000Source | 140,970,000Source | 191,242,000Source | 117,077,000Source | 157,059,000Source | 206,409,000Source | 129,894,000Source |
| Property, Plant and Equipment, NetUSD | 3,499,000Source | 3,959,000Source | 97,000Source | 3,794,000Source | 3,739,000Source | 2,940,000Source | 4,085,000Source | 2,418,000Source | 3,216,000Source | 4,321,000Source | 2,573,000Source |
| Current assets: | |||||||||||
| Cash and Cash Equivalents, at Carrying ValueUSD | 14,980,000Source | 40,214,000Source | 20,213,000Source | 14,697,000Source | 31,363,000Source | 17,483,000Source | 15,117,000Source | 25,143,000Source | 17,868,000Source | 26,587,000Source | 23,706,000Source |
| Assets, CurrentUSD | 120,156,000Source | 170,449,000Source | 73,647,000Source | 129,690,000Source | 183,132,000Source | 94,616,000Source | 140,364,000Source | 112,161,000Source | 109,611,000Source | 154,390,000Source | 124,204,000Source |
| Prepaid Expense and Other Assets, CurrentUSD | 2,586,000Source | 3,314,000Source | 1,021,000Source | 2,542,000Source | 3,842,000Source | 1,769,000Source | 2,111,000Source | 7,281,000Source | 2,030,000Source | 2,276,000Source | 3,452,000Source |
| Operating Lease, Right-of-Use AssetUSD | 44,480,000Source | 109,000Source | 0Source | 45,365,000Source | 754,000Source | 42,831,000Source | 46,183,000Source | 1,385,000Source | 43,659,000Source | 47,039,000Source | 2,002,000Source |
| LIABILITIES AND EQUITY | |||||||||||
| LiabilitiesUSD | 58,552,000Source | — | 7,768,000Source | 56,762,000Source | — | 54,587,000Source | 54,650,000Source | — | 58,405,000Source | 55,767,000Source | 9,359,000Source |
| Stockholders’ equity: | |||||||||||
| Preferred Stock, Value, IssuedUSD | 0Source | 0Source | 0Source | 0Source | 0Source | 0Source | 0Source | — | 0Source | 0Source | 0Source |
| Common Stock, Value, IssuedUSD | 2,000Source | 2,000Source | 2,000Source | 2,000Source | 2,000Source | 2,000Source | 2,000Source | 0Source | 2,000Source | 2,000Source | 0Source |
| Additional Paid in CapitalUSD | 356,901,000Source | 349,869,000Source | 362,923,000Source | 355,598,000Source | 347,823,000Source | 359,628,000Source | 353,788,000Source | 10,376,000Source | 358,257,000Source | 351,991,000Source | 8,987,000Source |
| Retained Earnings (Accumulated Deficit)USD | -246,784,000Source | -185,024,000Source | -296,917,000Source | -232,905,000Source | -168,515,000Source | -273,224,000Source | -217,230,000Source | -151,539,000Source | -259,669,000Source | -201,472,000Source | -136,109,000Source |
| Accumulated Other Comprehensive Income (Loss), Net of TaxUSD | 50,000Source | 236,000Source | -32,000Source | -4,000Source | -64,000Source | -23,000Source | 32,000Source | -21,000Source | 64,000Source | 121,000Source | 40,000Source |
| Stockholders' Equity Attributable to ParentUSD | 110,169,000Source | 165,083,000Source | 65,976,000Source | 122,691,000Source | 179,246,000Source | 86,383,000Source | 136,592,000Source | -141,184,000Source | 98,654,000Source | 150,642,000Source | -127,082,000Source |
| Liabilities and EquityUSD | 168,721,000Source | 175,093,000Source | 73,744,000Source | 179,453,000Source | 188,203,000Source | 140,970,000Source | 191,242,000Source | 117,077,000Source | 157,059,000Source | 206,409,000Source | 129,894,000Source |
| Current liabilities: | |||||||||||
| Liabilities, CurrentUSD | 11,845,000Source | 10,010,000Source | 7,768,000Source | 9,213,000Source | 8,957,000Source | 9,583,000Source | 6,338,000Source | 10,644,000Source | 12,537,000Source | 8,135,000Source | 9,359,000Source |
| Operating Lease, Liability, CurrentUSD | 3,052,000Source | 121,000Source | 0Source | 1,961,000Source | 837,000Source | 3,284,000Source | 262,000Source | 1,523,000Source | 3,167,000Source | — | 2,195,000Source |
| Accounts Payable, CurrentUSD | 1,136,000Source | 2,542,000Source | 1,051,000Source | 2,294,000Source | 1,686,000Source | 2,035,000Source | 1,366,000Source | 2,937,000Source | 1,491,000Source | 1,274,000Source | 2,222,000Source |
| Operating Lease, Liability, NoncurrentUSD | 46,707,000Source | — | 0Source | 47,549,000Source | — | 45,004,000Source | 48,312,000Source | — | 45,868,000Source | 47,632,000Source | — |
| Additional Financial Items | |||||||||||
| Cash, Cash Equivalents, and Short-term InvestmentsUSD | 117,600,000Source | 167,100,000Source | 72,600,000Source | 127,100,000Source | 179,300,000Source | 92,800,000Source | 138,300,000Source | 104,880,000Source | 107,600,000Source | 152,100,000Source | — |
| Short-term InvestmentsUSD | 102,590,000Source | 126,921,000Source | 52,413,000Source | 112,451,000Source | 147,927,000Source | 75,364,000Source | 123,136,000Source | 79,737,000Source | 89,713,000Source | 125,527,000Source | 97,046,000Source |
cash flow · annual statements
| Line item | Q4 2025 | Q4 2024 | Q3 2025 | Q3 2024 | Q2 2026 | Q2 2025 | Q1 2026 | Q1 2025 | FY 2025 | FY 2024 | FY 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cash flows from operating activities: | |||||||||||
| Net Income (Loss), Including Portion Attributable to Noncontrolling InterestUSD | — | — | -13,879,000Source | -16,509,000Source | -23,693,000Source | -15,675,000Source | -13,555,000Source | -15,758,000Source | -58,197,000Source | -65,363,000Source | -49,434,000Source |
| Adjustments to reconcile net income to net cash provided by operating activities: | |||||||||||
| Depreciation, Depletion and AmortizationUSD | — | — | — | — | — | — | 284,000Source | 317,000Source | 1,251,000Source | 1,086,000Source | 957,000Source |
| Share-based Payment Arrangement, Noncash ExpenseUSD | — | — | — | — | — | — | 1,371,000Source | 1,797,000Source | 6,125,000Source | 7,516,000Source | 3,336,000Source |
| Deferred Income Tax Expense (Benefit)USD | — | — | — | — | — | — | — | — | 0Source | — | — |
| Net Cash Provided by (Used in) Operating ActivitiesUSD | — | — | — | — | — | — | -14,972,000Source | -14,530,000Source | -46,661,000Source | -60,841,000Source | -46,855,000Source |
| Cash flows from investing activities: | |||||||||||
| Net Cash Provided by (Used in) Investing ActivitiesUSD | — | — | — | — | — | — | 14,587,000Source | 3,060,000Source | 37,801,000Source | -26,101,000Source | -38,260,000Source |
| Payments to Acquire Property, Plant, and EquipmentUSD | — | — | — | — | — | — | 8,000Source | 59,000Source | 546,000Source | 2,536,000Source | 633,000Source |
| Cash flows from financing activities: | |||||||||||
| Net Cash Provided by (Used in) Financing ActivitiesUSD | — | — | — | — | — | — | — | — | 141,000Source | 89,823,000Source | 97,897,000Source |
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate EffectUSD | — | — | — | — | — | — | -385,000Source | -11,470,000Source | -8,719,000Source | 2,881,000Source | 12,782,000Source |
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash EquivalentsUSD | — | — | 15,540,000Source | 40,774,000Source | 20,213,000Source | 15,257,000Source | 18,043,000Source | 15,677,000Source | 18,428,000Source | 27,147,000Source | 24,266,000Source |
| Additional Financial Items | |||||||||||
| Share-based Payment Arrangement, ExpenseUSD | — | — | 1,303,000Source | 2,045,000Source | 3,222,000Source | 1,693,000Source | 1,371,000Source | 1,797,000Source | 6,125,000Source | 7,516,000Source | 3,336,000Source |
| Cash, Cash Equivalents, and Short-term InvestmentsUSD | — | — | 117,600,000Source | 167,100,000Source | 72,600,000Source | 127,100,000Source | 92,800,000Source | 138,300,000Source | 107,600,000Source | 152,100,000Source | — |
| General and Administrative ExpenseUSD | — | — | 4,475,000Source | 4,626,000Source | 10,411,000Source | 4,843,000Source | 4,741,000Source | 5,203,000Source | 18,707,000Source | 18,000,000Source | 12,159,000Source |
| Income Tax Expense (Benefit)USD | — | — | — | — | — | — | — | — | 0Source | — | — |
| Investment Income, InterestUSD | — | — | 1,269,000Source | 2,174,000Source | 690,000Source | 1,386,000Source | 920,000Source | 1,585,000Source | 5,357,000Source | 7,892,000Source | 5,282,000Source |
| Net Income (Loss) Attributable to ParentUSD | — | — | -13,879,000Source | -16,509,000Source | -23,693,000Source | -15,675,000Source | -13,555,000Source | -15,758,000Source | -58,197,000Source | -65,363,000Source | -49,434,000Source |
| Nonoperating Income (Expense)USD | — | — | 1,269,000Source | 2,206,000Source | 691,000Source | 1,386,000Source | 920,000Source | 1,583,000Source | 5,355,000Source | 7,904,000Source | 5,362,000Source |
| Operating ExpensesUSD | — | — | 15,148,000Source | 18,715,000Source | 24,384,000Source | 17,061,000Source | 14,475,000Source | 17,341,000Source | 63,552,000Source | 73,267,000Source | 54,796,000Source |
| Other Nonoperating Income (Expense)USD | — | — | 0Source | 32,000Source | 1,000Source | 0Source | — | -2,000Source | -2,000Source | 12,000Source | 80,000Source |
| Payments to Acquire InvestmentsUSD | — | — | — | — | — | — | 29,405,000Source | 52,625,000Source | 174,897,000Source | 208,465,000Source | 160,123,000Source |
| Proceeds from Stock Options ExercisedUSD | — | — | — | — | — | — | — | — | — | 62,000Source | 182,000Source |
income statement · annual statements
| Line item | Q4 2025 | Q4 2024 | Q3 2025 | Q3 2024 | Q2 2026 | Q2 2025 | Q1 2026 | Q1 2025 | FY 2025 | FY 2024 | FY 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating Income (Loss)USD | — | — | -15,148,000Source | -18,715,000Source | -24,384,000Source | -17,061,000Source | -14,475,000Source | -17,341,000Source | -63,552,000Source | -73,267,000Source | -54,796,000Source |
| Other Nonoperating Income (Expense)USD | — | — | 0Source | 32,000Source | 1,000Source | 0Source | — | -2,000Source | -2,000Source | 12,000Source | 80,000Source |
| Income Tax Expense (Benefit)USD | — | — | — | — | — | — | — | — | 0Source | — | — |
| Net Income (Loss) Attributable to ParentUSD | — | — | -13,879,000Source | -16,509,000Source | -23,693,000Source | -15,675,000Source | -13,555,000Source | -15,758,000Source | -58,197,000Source | -65,363,000Source | -49,434,000Source |
| Earnings Per Share, BasicUSD per share | — | — | -0.62Source | -0.74Source | -1.06Source | -0.7Source | -0.6Source | -0.71Source | -2.6Source | -3.85Source | -40.65Source |
| Earnings Per Share, DilutedUSD per share | — | — | -0.62Source | -0.74Source | -1.06Source | -0.7Source | -0.6Source | -0.71Source | -2.6Source | -3.85Source | -40.65Source |
| Weighted Average Number of Shares Outstanding, Basicshares | — | — | 22,386,000Source | 22,254,000Source | 22,450,000Source | 22,356,000Source | 22,407,000Source | 22,300,000Source | 22,360,000Source | 16,984,000Source | 1,216,000Source |
| Weighted Average Number of Shares Outstanding, Dilutedshares | — | — | 22,386,000Source | 22,254,000Source | 22,450,000Source | 22,356,000Source | 22,407,000Source | 22,300,000Source | 22,360,000Source | 16,984,000Source | 1,216,000Source |
| Additional Financial Items | |||||||||||
| Current Income Tax Expense (Benefit)USD | — | — | — | — | — | — | — | — | 0Source | — | — |
| Depreciation, Depletion and Amortization, NonproductionUSD | — | — | 300,000Source | 300,000Source | 1,300,000Source | 300,000Source | 300,000Source | 300,000Source | 1,300,000Source | 1,100,000Source | 1,000,000Source |
| General and Administrative ExpenseUSD | — | — | 4,475,000Source | 4,626,000Source | 10,411,000Source | 4,843,000Source | 4,741,000Source | 5,203,000Source | 18,707,000Source | 18,000,000Source | 12,159,000Source |
| Investment Income, InterestUSD | — | — | 1,269,000Source | 2,174,000Source | 690,000Source | 1,386,000Source | 920,000Source | 1,585,000Source | 5,357,000Source | 7,892,000Source | 5,282,000Source |
| Nonoperating Income (Expense)USD | — | — | 1,269,000Source | 2,206,000Source | 691,000Source | 1,386,000Source | 920,000Source | 1,583,000Source | 5,355,000Source | 7,904,000Source | 5,362,000Source |
| Operating ExpensesUSD | — | — | 15,148,000Source | 18,715,000Source | 24,384,000Source | 17,061,000Source | 14,475,000Source | 17,341,000Source | 63,552,000Source | 73,267,000Source | 54,796,000Source |
| Research and Development ExpenseUSD | — | — | 10,673,000Source | 14,089,000Source | 13,973,000Source | 12,218,000Source | 9,734,000Source | 12,138,000Source | 44,845,000Source | 55,267,000Source | 42,637,000Source |
Offerings
Registration 333-299369
Filing attachments
d108148dex43.htm · S-4 · 2026-10-08
Exhibit 4.3 CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [***], HAS BEEN OMITTED BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) IS THE TYPE THAT REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL THIS WARRANT AND THE SECURITIES ISSUABLE UPON EXERCISE OF THIS WARRANT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR UNDER THE SECURITIES LAWS OF CERTAIN STATES. THESE SECURITIES MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, P…
Read attachment ↗d108148dex44.htm · S-4 · 2026-10-08
Exhibit 4.4 THIS WARRANT AND THE SHARES OF COMMON STOCK ISSUABLE UPON THE EXERCISE OF THIS WARRANT (THE “SECURITIES”) HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR THE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES. THE SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT AND MAY NOT BE SOLD, TRANSFERRED OR ASSIGNED UNLESS (I) SUCH SECURITIES HAVE BEEN REGISTERED FOR SALE PURSUANT TO THE SECURITIES ACT, (II) SUCH SECURITIES MAY BE SOLD PURSUANT TO R…
Read attachment ↗d108148dex46.htm · S-4 · 2026-10-08
Exhibit 4.6 CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY [***], HAS BEEN OMITTED BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) IS THE TYPE THAT REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL SERAPHA BIO, INC. INVESTORS’ RIGHTS AGREEMENT THIS INVESTORS’ RIGHTS AGREEMENT (this “Agreement”), is made as of June 22, 2026, by and among Serapha Bio, Inc., a Delaware corporation (the “Company”), the Investors (as defined below) and the Key Holders (as defined below). RECITA…
Read attachment ↗d108148dex992.htm · S-4 · 2026-10-08
Exhibit 99.2 Consent to be Named as a Director Boundless Bio, Inc. is filing a Registration Statement on Form S-4 (the “Registration Statement”) with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”). In connection therewith, I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement and any and all amendments and supplements thereto as a future member of the board of directors of the combi…
Read attachment ↗d159021dex991.htm · 8-K · 2026-06-23
EX-99.1 7 d159021dex991.htm EX-99.1 EX-99.1 Exhibit 99.1 Boundless Bio and Serapha Bio Announce Merger Agreement and $230 Million Concurrent Private Placement Combined company to operate as Serapha Bio and to advance Serapha’s potential best-in-class in vivo base editing program for Alpha-1 Antitrypsin Deficiency Serapha’s lead program SERP-01 targets the SERPINA1 E342K (PiZZ) mutation, with proof-of-concept data demonstrating restoration of serum AAT to normal levels Concurrent $230 mi…
Read attachment ↗d159021dex992.htm · 8-K · 2026-06-23
EX-99.2 8 d159021dex992.htm EX-99.2 EX-99.2 Exhibit 99.2 Boundless Bio & Serapha BioConference Call Script Operator Good morning and welcome to the Boundless Bio conference call to discuss the merger of Boundless and Serapha Bio. This call is being recorded for replay at the company’s request. It’s now my pleasure to turn the call over to Monique Allaire, IR representative for Boundless Bio. Please go ahead. Monique Allaire Good morning and thank you for joining us for today’s conferen…
Read attachment ↗