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Seaport Therapeutics, Inc.

SPTXNasdaqCIK 2042347HealthcareFiscal year ends Dec 31

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Standardized line items from XBRL company facts, the last twelve quarters. Negative values are in parentheses. A figure marked d is derived from year-to-date figures.

Income statement

Operating income−$65.8m, Q2 FY2026
Net income−$62.6m, Q2 FY2026
Line itemUnitperiod not labelled2025-03-31period not labelled2025-06-30Q1 FY20262026-03-31Q2 FY20262026-06-30
Research and development$m10.5Research and development, period not labelled, three months to 2025-03-31$10.5m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure13.4Research and development, period not labelled, three months to 2025-06-30$13.4m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure21.4Research and development, Q1 FY2026, three months to 2026-03-31$21.4m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure24.6Research and development, Q2 FY2026, three months to 2026-06-30$24.6m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Operating income$m(16.2)Operating income, period not labelled, three months to 2025-03-31−$16.2m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(18.5)Operating income, period not labelled, three months to 2025-06-30−$18.5m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(27.5)Operating income, Q1 FY2026, three months to 2026-03-31−$27.5m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(65.8)Operating income, Q2 FY2026, three months to 2026-06-30−$65.8m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Income tax$m0.0Income tax, period not labelled, three months to 2025-03-31$31.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure0.1Income tax, period not labelled, three months to 2025-06-30$134.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure0.5Income tax, Q1 FY2026, three months to 2026-03-31$519.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure0.3Income tax, Q2 FY2026, three months to 2026-06-30$251.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Net income$m(13.1)Net income, period not labelled, three months to 2025-03-31−$13.1m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(15.1)Net income, period not labelled, three months to 2025-06-30−$15.1m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(25.4)Net income, Q1 FY2026, three months to 2026-03-31−$25.4m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(62.6)Net income, Q2 FY2026, three months to 2026-06-30−$62.6m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Diluted EPS$ per share(5.65)Diluted EPS, period not labelled, three months to 2025-03-31−$5.65 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(6.40)Diluted EPS, period not labelled, three months to 2025-06-30−$6.40 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(10.34)Diluted EPS, Q1 FY2026, three months to 2026-03-31−$10.34 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(1.78)Diluted EPS, Q2 FY2026, three months to 2026-06-30−$1.78 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Basic EPS$ per share(5.65)Basic EPS, period not labelled, three months to 2025-03-31−$5.65 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(6.40)Basic EPS, period not labelled, three months to 2025-06-30−$6.40 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(10.34)Basic EPS, Q1 FY2026, three months to 2026-03-31−$10.34 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(1.78)Basic EPS, Q2 FY2026, three months to 2026-06-30−$1.78 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure

Balance sheet

Cash and equivalents$64.2m, Q2 FY2026
Shareholders' equity$422.6m, Q2 FY2026
Line itemUnitperiod not labelled2024-12-31period not labelled2025-03-31period not labelled2025-06-30period not labelled2025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Cash and equivalents$mnot reportednot reportednot reported46.0Cash and equivalents, period not labelled, at 2025-12-31$46.0m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure52.9Cash and equivalents, Q1 FY2026, at 2026-03-31$52.9m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure64.2Cash and equivalents, Q2 FY2026, at 2026-06-30$64.2m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Current assets$mnot reportednot reportednot reported223Current assets, period not labelled, at 2025-12-31$223.2m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure188Current assets, Q1 FY2026, at 2026-03-31$188.3m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure282Current assets, Q2 FY2026, at 2026-06-30$282.2m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Total assets$mnot reportednot reportednot reported249Total assets, period not labelled, at 2025-12-31$249.0m. XBRL concept us-gaap:Assets. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure228Total assets, Q1 FY2026, at 2026-03-31$227.7m. XBRL concept us-gaap:Assets. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure442Total assets, Q2 FY2026, at 2026-06-30$441.7m. XBRL concept us-gaap:Assets. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Current liabilities$mnot reportednot reportednot reported12.8Current liabilities, period not labelled, at 2025-12-31$12.8m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure14.2Current liabilities, Q1 FY2026, at 2026-03-31$14.2m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure15.7Current liabilities, Q2 FY2026, at 2026-06-30$15.7m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Total liabilities$mnot reportednot reportednot reported16.2Total liabilities, period not labelled, at 2025-12-31$16.2m. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure18.0Total liabilities, Q1 FY2026, at 2026-03-31$18.0m. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure19.1Total liabilities, Q2 FY2026, at 2026-06-30$19.1m. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure
Shareholders' equity$m(24.8)Shareholders' equity, period not labelled, at 2024-12-31−$24.8m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(36.2)Shareholders' equity, period not labelled, at 2025-03-31−$36.2m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(49.5)Shareholders' equity, period not labelled, at 2025-06-30−$49.5m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(92.5)Shareholders' equity, period not labelled, at 2025-12-31−$92.5m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure(116)Shareholders' equity, Q1 FY2026, at 2026-03-31−$115.6m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure423Shareholders' equity, Q2 FY2026, at 2026-06-30$422.6m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure

Cash flow

Operating cash flow−$26.1m, Q2 FY2026
Capital expenditure$0, Q2 FY2026
Line itemUnitperiod not labelled2025-03-31period not labelled2025-06-30Q1 FY20262026-03-31Q2 FY20262026-06-30
Operating cash flow$m(20.2)Operating cash flow, period not labelled, three months to 2025-03-31−$20.2m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(15.3)Operating cash flow, period not labelled, three months to 2025-06-30−$15.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-03, accession 0001193125-26-329537. Derived: 6-month figure less the 3-month figure.Report this figure(20.2)Operating cash flow, Q1 FY2026, three months to 2026-03-31−$20.2m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure(26.1)Operating cash flow, Q2 FY2026, three months to 2026-06-30−$26.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-03, accession 0001193125-26-329537. Derived: 6-month figure less the 3-month figure.Report this figure
Capital expenditure$m0.1Capital expenditure, period not labelled, three months to 2025-03-31$54.0k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure0.3Capital expenditure, period not labelled, three months to 2025-06-30$269.0k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-03, accession 0001193125-26-329537. Derived: 6-month figure less the 3-month figure.Report this figure0.0Capital expenditure, Q1 FY2026, three months to 2026-03-31$0. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure0.0Capital expenditure, Q2 FY2026, three months to 2026-06-30$0. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-03, accession 0001193125-26-329537. Derived: 6-month figure less the 3-month figure.Report this figure

Shares

Diluted shares (weighted)35.24m, Q2 FY2026
Line itemUnitperiod not labelled2025-03-31period not labelled2025-06-30Q1 FY20262026-03-31Q2 FY20262026-06-30
Diluted shares (weighted)m shares2.3Diluted shares (weighted), period not labelled, three months to 2025-03-312,323,724 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure2.4Diluted shares (weighted), period not labelled, three months to 2025-06-302,356,777 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure2.5Diluted shares (weighted), Q1 FY2026, three months to 2026-03-312,456,766 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-06-08, accession 0001193125-26-260678.Report this figure35.2Diluted shares (weighted), Q2 FY2026, three months to 2026-06-3035,236,214 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure

Shares outstanding: 53.53mShares outstanding, period not labelled, at 2026-07-2753,530,550 shares. XBRL concept dei:EntityCommonStockSharesOutstanding. 10-Q filed 2026-08-03, accession 0001193125-26-329537.Report this figure at Jul 27, 2026, from the cover of the 10-Q filed Aug 3, 2026.

Source: SEC EDGAR, XBRL company facts. Last ingested by Listed: Oct 24, 2026, 15:51 ET. Listed shows no prices and gives no investment advice.