3.25.4 html 165 284 1 false 45 0 false 6 false false R1.htm 995200090 - Document - Document and Entity Information Sheet http://sagimetbiosciences.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 995200100 - Statement - Balance Sheets Sheet http://sagimetbiosciences.com/role/StatementBalanceSheets Balance Sheets Statements 2 false false R3.htm 995200105 - Statement - Balance Sheets (Parenthetical) Sheet http://sagimetbiosciences.com/role/StatementBalanceSheetsParenthetical Balance Sheets (Parenthetical) Statements 3 false false R4.htm 995200200 - Statement - Statements of Operations and Comprehensive Loss Sheet http://sagimetbiosciences.com/role/StatementStatementsOfOperationsAndComprehensiveLoss Statements of Operations and Comprehensive Loss Statements 4 false false R5.htm 995200300 - Statement - Statements of Stockholders' Equity Sheet http://sagimetbiosciences.com/role/StatementStatementsOfStockholdersEquity Statements of Stockholders' Equity Statements 5 false false R6.htm 995200305 - Statement - Statements of Stockholders' Equity (Parenthetical) Sheet http://sagimetbiosciences.com/role/StatementStatementsOfStockholdersEquityParenthetical Statements of Stockholders' Equity (Parenthetical) Statements 6 false false R7.htm 995200400 - Statement - Statements of Cash Flows Sheet http://sagimetbiosciences.com/role/StatementStatementsOfCashFlows Statements of Cash Flows Statements 7 false false R8.htm 995210101 - Disclosure - Description of Business and Basis of Presentation Sheet http://sagimetbiosciences.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentation Description of Business and Basis of Presentation Notes 8 false false R9.htm 995210201 - Disclosure - Significant Accounting Policies Sheet http://sagimetbiosciences.com/role/DisclosureSignificantAccountingPolicies Significant Accounting Policies Notes 9 false false R10.htm 995210301 - Disclosure - Fair Value Measurements and Fair Value of Financial Instruments Sheet http://sagimetbiosciences.com/role/DisclosureFairValueMeasurementsAndFairValueOfFinancialInstruments Fair Value Measurements and Fair Value of Financial Instruments Notes 10 false false R11.htm 995210401 - Disclosure - Prepaid Expenses and Other Current Assets Sheet http://sagimetbiosciences.com/role/DisclosurePrepaidExpensesAndOtherCurrentAssets Prepaid Expenses and Other Current Assets Notes 11 false false R12.htm 995210501 - Disclosure - Accrued Expenses and Other Current Liabilities Sheet http://sagimetbiosciences.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilities Accrued Expenses and Other Current Liabilities Notes 12 false false R13.htm 995210601 - Disclosure - Commitments and Contingencies Sheet http://sagimetbiosciences.com/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 13 false false R14.htm 995210701 - Disclosure - Stockholders' Equity Sheet http://sagimetbiosciences.com/role/DisclosureStockholdersEquity Stockholders' Equity Notes 14 false false R15.htm 995210801 - Disclosure - Stock-Based Compensation Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensation Stock-Based Compensation Notes 15 false false R16.htm 995210901 - Disclosure - Income Taxes Sheet http://sagimetbiosciences.com/role/DisclosureIncomeTaxes Income Taxes Notes 16 false false R17.htm 995211001 - Disclosure - Segment Reporting Sheet http://sagimetbiosciences.com/role/DisclosureSegmentReporting Segment Reporting Notes 17 false false R18.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 18 false false R19.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 19 false false R20.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 20 false false R21.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 21 false false R22.htm 99920202 - Disclosure - Significant Accounting Policies (Policies) Sheet http://sagimetbiosciences.com/role/DisclosureSignificantAccountingPoliciesPolicies Significant Accounting Policies (Policies) Policies http://sagimetbiosciences.com/role/DisclosureSignificantAccountingPolicies 22 false false R23.htm 99930203 - Disclosure - Summary of significant accounting policies (Tables) Sheet http://sagimetbiosciences.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables Summary of significant accounting policies (Tables) Tables 23 false false R24.htm 99930303 - Disclosure - Fair Value Measurements and Fair Value of Financial Instruments (Tables) Sheet http://sagimetbiosciences.com/role/DisclosureFairValueMeasurementsAndFairValueOfFinancialInstrumentsTables Fair Value Measurements and Fair Value of Financial Instruments (Tables) Tables http://sagimetbiosciences.com/role/DisclosureFairValueMeasurementsAndFairValueOfFinancialInstruments 24 false false R25.htm 99930403 - Disclosure - Prepaid expenses and other current assets (Tables) Sheet http://sagimetbiosciences.com/role/DisclosurePrepaidExpensesAndOtherCurrentAssetsTables Prepaid expenses and other current assets (Tables) Tables 25 false false R26.htm 99930503 - Disclosure - Accrued expenses and other current liabilities (Tables) Sheet http://sagimetbiosciences.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesTables Accrued expenses and other current liabilities (Tables) Tables 26 false false R27.htm 99930603 - Disclosure - Commitments and Contingencies (Tables) Sheet http://sagimetbiosciences.com/role/DisclosureCommitmentsAndContingenciesTables Commitments and Contingencies (Tables) Tables http://sagimetbiosciences.com/role/DisclosureCommitmentsAndContingencies 27 false false R28.htm 99930803 - Disclosure - Stock-based compensation (Tables) Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensationTables Stock-based compensation (Tables) Tables 28 false false R29.htm 99931003 - Disclosure - Segment Reporting (Tables) Sheet http://sagimetbiosciences.com/role/DisclosureSegmentReportingTables Segment Reporting (Tables) Tables http://sagimetbiosciences.com/role/DisclosureSegmentReporting 29 false false R30.htm 99940101 - Disclosure - Description of Business and Basis of Presentation (Details) Sheet http://sagimetbiosciences.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentationDetails Description of Business and Basis of Presentation (Details) Details http://sagimetbiosciences.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentation 30 false false R31.htm 99940201 - Disclosure - Significant Accounting Policies - EPS (Details) Sheet http://sagimetbiosciences.com/role/DisclosureSignificantAccountingPoliciesEpsDetails Significant Accounting Policies - EPS (Details) Details http://sagimetbiosciences.com/role/DisclosureSignificantAccountingPoliciesPolicies 31 false false R32.htm 99940202 - Disclosure - Significant Accounting Policies - Dilutive (Details) Sheet http://sagimetbiosciences.com/role/DisclosureSignificantAccountingPoliciesDilutiveDetails Significant Accounting Policies - Dilutive (Details) Details 32 false false R33.htm 99940301 - Disclosure - Fair Value Measurements and Fair Value of Financial Instruments - Warrants (Details) Sheet http://sagimetbiosciences.com/role/DisclosureFairValueMeasurementsAndFairValueOfFinancialInstrumentsWarrantsDetails Fair Value Measurements and Fair Value of Financial Instruments - Warrants (Details) Details http://sagimetbiosciences.com/role/DisclosureFairValueMeasurementsAndFairValueOfFinancialInstrumentsTables 33 false false R34.htm 99940302 - Disclosure - Fair Value Measurements and Fair Value of Financial Instruments - Fair value (Details) Sheet http://sagimetbiosciences.com/role/DisclosureFairValueMeasurementsAndFairValueOfFinancialInstrumentsFairValueDetails Fair Value Measurements and Fair Value of Financial Instruments - Fair value (Details) Details http://sagimetbiosciences.com/role/DisclosureFairValueMeasurementsAndFairValueOfFinancialInstrumentsTables 34 false false R35.htm 99940401 - Disclosure - Prepaid expenses and other current assets (Details) Sheet http://sagimetbiosciences.com/role/DisclosurePrepaidExpensesAndOtherCurrentAssetsDetails Prepaid expenses and other current assets (Details) Details http://sagimetbiosciences.com/role/DisclosurePrepaidExpensesAndOtherCurrentAssetsTables 35 false false R36.htm 99940501 - Disclosure - Accrued expenses and other current liabilities (Details) Sheet http://sagimetbiosciences.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesDetails Accrued expenses and other current liabilities (Details) Details http://sagimetbiosciences.com/role/DisclosureAccruedExpensesAndOtherCurrentLiabilitiesTables 36 false false R37.htm 99940601 - Disclosure - Commitments and contingencies - Licenses (Details) Sheet http://sagimetbiosciences.com/role/DisclosureCommitmentsAndContingenciesLicensesDetails Commitments and contingencies - Licenses (Details) Details 37 false false R38.htm 99940602 - Disclosure - Commitments and contingencies - Lease (Details) Sheet http://sagimetbiosciences.com/role/DisclosureCommitmentsAndContingenciesLeaseDetails Commitments and contingencies - Lease (Details) Details 38 false false R39.htm 99940603 - Disclosure - Commitments and Contingencies - Operating lease liabilities (Details) Sheet http://sagimetbiosciences.com/role/DisclosureCommitmentsAndContingenciesOperatingLeaseLiabilitiesDetails Commitments and Contingencies - Operating lease liabilities (Details) Details 39 false false R40.htm 99940604 - Disclosure - Commitments and Contingencies - Supplemental (Details) Sheet http://sagimetbiosciences.com/role/DisclosureCommitmentsAndContingenciesSupplementalDetails Commitments and Contingencies - Supplemental (Details) Details 40 false false R41.htm 99940701 - Disclosure - Stockholders' Equity - Stock (Details) Sheet http://sagimetbiosciences.com/role/DisclosureStockholdersEquityStockDetails Stockholders' Equity - Stock (Details) Details 41 false false R42.htm 99940801 - Disclosure - Stock-based compensation - Equity Incentive Plan (Details) Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensationEquityIncentivePlanDetails Stock-based compensation - Equity Incentive Plan (Details) Details 42 false false R43.htm 99940802 - Disclosure - Stock-based compensation - Expense (Details) Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensationExpenseDetails Stock-based compensation - Expense (Details) Details 43 false false R44.htm 99940803 - Disclosure - Stock-based compensation - Stock options (Details) Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensationStockOptionsDetails Stock-based compensation - Stock options (Details) Details 44 false false R45.htm 99940804 - Disclosure - Stock-based compensation - Restricted Stock Units (Details) Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensationRestrictedStockUnitsDetails Stock-based compensation - Restricted Stock Units (Details) Details 45 false false R46.htm 99940805 - Disclosure - Stock-based compensation - Fair value input (Details) Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensationFairValueInputDetails Stock-based compensation - Fair value input (Details) Details 46 false false R47.htm 99940806 - Disclosure - Stock-Based Compensation - ESPP (Details) Sheet http://sagimetbiosciences.com/role/DisclosureStockBasedCompensationEsppDetails Stock-Based Compensation - ESPP (Details) Details 47 false false R48.htm 99940901 - Disclosure - Income Taxes - Rate Reconciliation, Amount (Details) Sheet http://sagimetbiosciences.com/role/DisclosureIncomeTaxesRateReconciliationAmountDetails Income Taxes - Rate Reconciliation, Amount (Details) Details 48 false false R49.htm 99940902 - Disclosure - Income Taxes - Rate Reconciliation, Percent (Details) Sheet http://sagimetbiosciences.com/role/DisclosureIncomeTaxesRateReconciliationPercentDetails Income Taxes - Rate Reconciliation, Percent (Details) Details 49 false false R50.htm 99940903 - Disclosure - Income taxes - Deferred (Details) Sheet http://sagimetbiosciences.com/role/DisclosureIncomeTaxesDeferredDetails Income taxes - Deferred (Details) Details 50 false false R51.htm 99940904 - Disclosure - Income taxes - Carryforwards (Details) Sheet http://sagimetbiosciences.com/role/DisclosureIncomeTaxesCarryforwardsDetails Income taxes - Carryforwards (Details) Details 51 false false R52.htm 99940905 - Disclosure - Income taxes - Unrecognized (Details) Sheet http://sagimetbiosciences.com/role/DisclosureIncomeTaxesUnrecognizedDetails Income taxes - Unrecognized (Details) Details 52 false false R53.htm 99941001 - Disclosure - Segment Reporting (Details) Sheet http://sagimetbiosciences.com/role/DisclosureSegmentReportingDetails Segment Reporting (Details) Details http://sagimetbiosciences.com/role/DisclosureSegmentReportingTables 53 false false All Reports Book All Reports sgmt-20251231.xsd sgmt-20251231_cal.xml sgmt-20251231_def.xml sgmt-20251231_lab.xml sgmt-20251231_pre.xml sgmt-20251231x10k.htm sgmt-20251231x10k006.jpg sgmt-20251231x10k007.jpg sgmt-20251231x10k008.jpg sgmt-20251231x10k009.jpg sgmt-20251231x10k010.jpg sgmt-20251231x10k011.jpg sgmt-20251231x10k012.jpg sgmt-20251231x10k013.jpg sgmt-20251231x10k014.jpg sgmt-20251231x10k015.jpg sgmt-20251231x10k016.jpg sgmt-20251231x10k017.jpg sgmt-20251231x10k018.jpg sgmt-20251231x10k019.jpg sgmt-20251231x10k020.jpg sgmt-20251231x10k021.jpg sgmt-20251231x10k022.jpg sgmt-20251231x10k023.jpg sgmt-20251231x10k024.jpg sgmt-20251231x10k025.jpg sgmt-20251231x10k026.jpg sgmt-20251231x10k027.jpg sgmt-20251231x10k028.jpg sgmt-20251231x10k029.jpg sgmt-20251231x10k030.jpg sgmt-20251231x10k031.jpg sgmt-20251231x10k032.jpg sgmt-20251231x10k033.jpg sgmt-20251231x10k034.jpg sgmt-20251231x10k035.jpg sgmt-20251231x10k036.jpg sgmt-20251231x10k037.jpg sgmt-20251231x10k038.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/cyd/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 true true