3.22.1 html 140 316 1 false 50 0 false 7 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.soleno.life/20211231/taxonomy/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Consolidated Balance Sheets Sheet http://www.soleno.life/20211231/taxonomy/role/StatementConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 100020 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://www.soleno.life/20211231/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Consolidated Statements of Operations Sheet http://www.soleno.life/20211231/taxonomy/role/StatementConsolidatedStatementsOfOperations Consolidated Statements of Operations Statements 4 false false R5.htm 100040 - Statement - Consolidated Statements of Stockholders' Equity Sheet http://www.soleno.life/20211231/taxonomy/role/StatementConsolidatedStatementsOfStockholdersEquity Consolidated Statements of Stockholders' Equity Statements 5 false false R6.htm 100050 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical) Sheet http://www.soleno.life/20211231/taxonomy/role/StatementConsolidatedStatementsOfStockholdersEquityParenthetical Consolidated Statements of Stockholders' Equity (Parenthetical) Statements 6 false false R7.htm 100060 - Statement - Consolidated Statements of Cash Flows Sheet http://www.soleno.life/20211231/taxonomy/role/StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 100070 - Disclosure - Overview Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureOverview Overview Notes 8 false false R9.htm 100080 - Disclosure - Going Concern and Management's Plans Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureGoingConcernAndManagementSPlans Going Concern and Management's Plans Notes 9 false false R10.htm 100090 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 100100 - Disclosure - Fair Value of Financial Instruments Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureFairValueOfFinancialInstruments Fair Value of Financial Instruments Notes 11 false false R12.htm 100110 - Disclosure - Other Financial Statement Details Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureOtherFinancialStatementDetails Other Financial Statement Details Notes 12 false false R13.htm 100120 - Disclosure - Warrant Liabilities Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureWarrantLiabilities Warrant Liabilities Notes 13 false false R14.htm 100130 - Disclosure - Leases Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureLeases Leases Notes 14 false false R15.htm 100140 - Disclosure - Commitments and Contingencies Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 15 false false R16.htm 100150 - Disclosure - Stockholders' Equity Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquity Stockholders' Equity Notes 16 false false R17.htm 100160 - Disclosure - Income Taxes Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxes Income Taxes Notes 17 false false R18.htm 100170 - Disclosure - Net loss per share Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureNetLossPerShare Net loss per share Notes 18 false false R19.htm 100180 - Disclosure - Defined Contribution Plan Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureDefinedContributionPlan Defined Contribution Plan Notes 19 false false R20.htm 100190 - Disclosure - Subsequent Events Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureSubsequentEvents Subsequent Events Notes 20 false false R21.htm 100200 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.soleno.life/20211231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies 21 false false R22.htm 100210 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) Tables http://www.soleno.life/20211231/taxonomy/role/DisclosureFairValueOfFinancialInstruments 22 false false R23.htm 100220 - Disclosure - Other Financial Statement Details (Tables) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureOtherFinancialStatementDetailsTables Other Financial Statement Details (Tables) Tables http://www.soleno.life/20211231/taxonomy/role/DisclosureOtherFinancialStatementDetails 23 false false R24.htm 100230 - Disclosure - Warrant Liabilities (Tables) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureWarrantLiabilitiesTables Warrant Liabilities (Tables) Tables http://www.soleno.life/20211231/taxonomy/role/DisclosureWarrantLiabilities 24 false false R25.htm 100240 - Disclosure - Leases (Tables) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureLeasesTables Leases (Tables) Tables http://www.soleno.life/20211231/taxonomy/role/DisclosureLeases 25 false false R26.htm 100250 - Disclosure - Stockholders' Equity (Tables) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquityTables Stockholders' Equity (Tables) Tables http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquity 26 false false R27.htm 100260 - Disclosure - Income Taxes (Tables) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxes 27 false false R28.htm 100270 - Disclosure - Net loss per share (Tables) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureNetLossPerShareTables Net loss per share (Tables) Tables http://www.soleno.life/20211231/taxonomy/role/DisclosureNetLossPerShare 28 false false R29.htm 100280 - Disclosure - Going Concern and Management's Plans - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureGoingConcernAndManagementSPlansAdditionalInformationDetail Going Concern and Management's Plans - Additional Information (Detail) Details 29 false false R30.htm 100290 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetail Summary of Significant Accounting Policies - Additional Information (Detail) Details 30 false false R31.htm 100300 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Instruments Measured at Fair Value on Recurring Basis (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsSummaryOfFinancialInstrumentsMeasuredAtFairValueOnRecurringBasisDetail Fair Value of Financial Instruments - Summary of Financial Instruments Measured at Fair Value on Recurring Basis (Detail) Details 31 false false R32.htm 100310 - Disclosure - Fair Value of Financial Instruments - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsAdditionalInformationDetail Fair Value of Financial Instruments - Additional Information (Detail) Details 32 false false R33.htm 100320 - Disclosure - Fair Value of Financial Instruments - Summary of Changes in Fair Value of Level 3 Financial Instruments (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsSummaryOfChangesInFairValueOfLevel3FinancialInstrumentsDetail Fair Value of Financial Instruments - Summary of Changes in Fair Value of Level 3 Financial Instruments (Detail) Details 33 false false R34.htm 100330 - Disclosure - Other Financial Statement Details - Schedule of Property and Equipment (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureOtherFinancialStatementDetailsScheduleOfPropertyAndEquipmentDetail Other Financial Statement Details - Schedule of Property and Equipment (Detail) Details 34 false false R35.htm 100340 - Disclosure - Other Financial Statement Details - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureOtherFinancialStatementDetailsAdditionalInformationDetail Other Financial Statement Details - Additional Information (Detail) Details 35 false false R36.htm 100350 - Disclosure - Other Financial Statements Details - Intangible Assets (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureOtherFinancialStatementsDetailsIntangibleAssetsDetail Other Financial Statements Details - Intangible Assets (Detail) Details 36 false false R37.htm 100360 - Disclosure - Other Financial Statement Details - Future Amortization Expense (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureOtherFinancialStatementDetailsFutureAmortizationExpenseDetail Other Financial Statement Details - Future Amortization Expense (Detail) Details 37 false false R38.htm 100370 - Disclosure - Warrant Liabilities - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureWarrantLiabilitiesAdditionalInformationDetail Warrant Liabilities - Additional Information (Detail) Details 38 false false R39.htm 100380 - Disclosure - Warrant Liabilities - Fair Value of Convertible Preferred Stock Warrant Liability (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureWarrantLiabilitiesFairValueOfConvertiblePreferredStockWarrantLiabilityDetail Warrant Liabilities - Fair Value of Convertible Preferred Stock Warrant Liability (Detail) Details 39 false false R40.htm 100390 - Disclosure - Leases - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureLeasesAdditionalInformationDetail Leases - Additional Information (Detail) Details 40 false false R41.htm 100400 - Disclosure - Leases - Schedule of Components of Lease Expense (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureLeasesScheduleOfComponentsOfLeaseExpenseDetail Leases - Schedule of Components of Lease Expense (Detail) Details 41 false false R42.htm 100410 - Disclosure - Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureLeasesScheduleOfSupplementalCashFlowInformationRelatedToLeasesDetail Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) Details 42 false false R43.htm 100420 - Disclosure - Leases - Schedule of Future Maturities (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureLeasesScheduleOfFutureMaturitiesDetail Leases - Schedule of Future Maturities (Detail) Details 43 false false R44.htm 100440 - Disclosure - Stockholders' Equity - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquityAdditionalInformationDetail Stockholders' Equity - Additional Information (Detail) Details 44 false false R45.htm 100450 - Disclosure - Stockholders' Equity - Summary of Stock Based Compensation Expense (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquitySummaryOfStockBasedCompensationExpenseDetail Stockholders' Equity - Summary of Stock Based Compensation Expense (Detail) Details 45 false false R46.htm 100460 - Disclosure - Stockholders' Equity - Schedule of Fair Value of Award Granted Using Black-Scholes Option Pricing Model (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquityScheduleOfFairValueOfAwardGrantedUsingBlackScholesOptionPricingModelDetail Stockholders' Equity - Schedule of Fair Value of Award Granted Using Black-Scholes Option Pricing Model (Detail) Details 46 false false R47.htm 100470 - Disclosure - Stockholders' Equity - Summary of Stock Option and Restricted Stock Unit Transactions (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquitySummaryOfStockOptionAndRestrictedStockUnitTransactionsDetail Stockholders' Equity - Summary of Stock Option and Restricted Stock Unit Transactions (Detail) Details 47 false false R48.htm 100480 - Disclosure - Stockholders' Equity - Summary of Restricted Stock Unit Transactions (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureStockholdersEquitySummaryOfRestrictedStockUnitTransactionsDetail Stockholders' Equity - Summary of Restricted Stock Unit Transactions (Detail) Details 48 false false R49.htm 100490 - Disclosure - Income Taxes - Schedule of Geographical Distribution of Loss before Income Taxes (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxesScheduleOfGeographicalDistributionOfLossBeforeIncomeTaxesDetail Income Taxes - Schedule of Geographical Distribution of Loss before Income Taxes (Detail) Details 49 false false R50.htm 100500 - Disclosure - Income Taxes - Provision for Income Tax Benefit by Applying Statutory Federal Income Tax Rate to Operating Loss (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxesProvisionForIncomeTaxBenefitByApplyingStatutoryFederalIncomeTaxRateToOperatingLossDetail Income Taxes - Provision for Income Tax Benefit by Applying Statutory Federal Income Tax Rate to Operating Loss (Detail) Details 50 false false R51.htm 100510 - Disclosure - Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxesSignificantComponentsOfCompanySDeferredTaxAssetsAndLiabilitiesDetail Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) Details 51 false false R52.htm 100520 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 52 false false R53.htm 100530 - Disclosure - Income Taxes - Summary of Gross Unrecognized Tax Benefits (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureIncomeTaxesSummaryOfGrossUnrecognizedTaxBenefitsDetail Income Taxes - Summary of Gross Unrecognized Tax Benefits (Detail) Details 53 false false R54.htm 100540 - Disclosure - Net loss per share - Schedule of Potentially Dilutive Securities Outstanding Excluded from Computations of Diluted Weighted-Average Shares Outstanding (Detail) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureNetLossPerShareScheduleOfPotentiallyDilutiveSecuritiesOutstandingExcludedFromComputationsOfDilutedWeightedAverageSharesOutstandingDetail Net loss per share - Schedule of Potentially Dilutive Securities Outstanding Excluded from Computations of Diluted Weighted-Average Shares Outstanding (Detail) Details 54 false false R55.htm 100550 - Disclosure - Defined Contribution Plan - Additional Information (Details) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureDefinedContributionPlanAdditionalInformationDetails Defined Contribution Plan - Additional Information (Details) Details 55 false false R56.htm 100560 - Disclosure - Subsequent Events - Additional Information (Details) Sheet http://www.soleno.life/20211231/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetails Subsequent Events - Additional Information (Details) Details 56 false false All Reports Book All Reports slno-10k_20211231.htm slno-20211231.xsd slno-20211231_cal.xml slno-20211231_def.xml slno-20211231_lab.xml slno-20211231_pre.xml slno-ex211_7.htm slno-ex231_6.htm slno-ex311_8.htm slno-ex312_11.htm slno-ex321_9.htm slno-ex322_10.htm http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true