$GOSS
Gossamer Bio, Inc. Stock $goss

$goss Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000172811724000092 Filed on November 07, 2024

Income Statement

Concept	2024 Q4	2024 Q3	2023 Q3
Revenue		$9.480M	$0.00
YoY Change
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin		$8.502M	$9.290M
YoY Change		-8.48%	-19.2%
% of Gross Profit
Research & Development		$34.90M	$31.20M
YoY Change		11.85%	-29.9%
% of Gross Profit
Depreciation & Amortization		$200.0K	$400.0K
YoY Change		-50.0%	-20.0%
% of Gross Profit
Operating Expenses		$43.40M	$40.49M
YoY Change		7.18%	-27.72%
Operating Profit		-$33.92M	-$40.49M
YoY Change		-16.23%	-27.72%
Interest Expense		-$2.304M	$3.343M
YoY Change		-168.92%	-3.8%
% of Operating Profit
Other Income/Expense, Net		$1.984M	$482.0K
YoY Change		311.62%	-114.42%
Pretax Income		-$31.94M	-$40.01M
YoY Change		-20.18%	-32.6%
Income Tax		-$1.100M	$0.00
% Of Pretax Income
Net Earnings		-$30.80M	-$40.01M
YoY Change		-23.01%	-32.6%
Net Earnings / Revenue		-324.93%
Basic Earnings Per Share		-$0.14	-$0.21
Diluted Earnings Per Share		-$0.14	-$0.21
COMMON SHARES
Basic Shares Outstanding	226.6M shares	226.2M shares	225.3M shares
Diluted Shares Outstanding		226.3M shares	192.9M shares

Balance Sheet

Concept	2024 Q3	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$327.0M	$328.9M
YoY Change	-0.57%	8.05%
Cash & Equivalents	$28.46M	$82.61M
Short-Term Investments	$298.6M	$246.3M
Other Short-Term Assets	$10.65M	$12.60M
YoY Change	-15.51%	64.73%
Inventory
Prepaid Expenses
Receivables	$6.588M
Other Receivables	$0.00
Total Short-Term Assets	$344.3M	$341.5M
YoY Change	0.81%	9.44%
LONG-TERM ASSETS
Property, Plant & Equipment	$302.0K	$1.941M
YoY Change	-84.44%	-54.91%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$283.0K	$649.0K
YoY Change	-56.39%	3.18%
Total Long-Term Assets	$6.611M	$6.435M
YoY Change	2.74%	-44.07%
TOTAL ASSETS
Total Short-Term Assets	$344.3M	$341.5M
Total Long-Term Assets	$6.611M	$6.435M
Total Assets	$350.9M	$347.9M
YoY Change	0.85%	7.54%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.057M	$1.251M
YoY Change	144.36%	244.63%
Accrued Expenses	$17.42M	$17.46M
YoY Change	-0.22%	-44.63%
Deferred Revenue	$20.30M
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$11.61M
YoY Change	-100.0%	0.0%
Total Short-Term Liabilities	$51.09M	$42.32M
YoY Change	20.72%	-19.62%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$3.634M
YoY Change	-100.0%	-75.5%
Other Long-Term Liabilities	$48.37M	$1.000M
YoY Change	4737.3%	-76.26%
Total Long-Term Liabilities	$0.00	$3.634M
YoY Change	-100.0%	-75.5%
TOTAL LIABILITIES
Total Short-Term Liabilities	$51.09M	$42.32M
Total Long-Term Liabilities	$0.00	$3.634M
Total Liabilities	$296.7M	$243.3M
YoY Change	21.96%	-8.94%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.236B	-$1.164B
YoY Change	6.15%	19.19%
Common Stock	$1.292B	$1.269B
YoY Change	1.79%	22.81%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$54.14M	$104.6M
YoY Change
Total Liabilities & Shareholders Equity	$350.9M	$347.9M
YoY Change	0.85%	7.54%

Cashflow Statement

Concept	2024 Q3	2023 Q3
OPERATING ACTIVITIES
Net Income	-$30.80M	-$40.01M
YoY Change	-23.01%	-32.6%
Depreciation, Depletion And Amortization	$200.0K	$400.0K
YoY Change	-50.0%	-20.0%
Cash From Operating Activities	-$32.03M	-$34.49M
YoY Change	-7.12%	-6.78%
INVESTING ACTIVITIES
Capital Expenditures		$0.00
YoY Change		-100.0%
Acquisitions
YoY Change
Other Investing Activities	-$26.75M	-$118.3M
YoY Change	-77.38%	424.04%
Cash From Investing Activities	-$26.75M	-$118.3M
YoY Change	-77.38%	423.32%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	281.0K	198.5M
YoY Change	-99.86%	66.5%
NET CHANGE
Cash From Operating Activities	-32.03M	-34.49M
Cash From Investing Activities	-26.75M	-118.3M
Cash From Financing Activities	281.0K	198.5M
Net Change In Cash	-58.51M	45.75M
YoY Change	-227.88%	-23.27%
FREE CASH FLOW
Cash From Operating Activities	-$32.03M	-$34.49M
Capital Expenditures		$0.00
Free Cash Flow		-$34.49M
YoY Change		-6.7%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1291883000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1212040000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	62769000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	249147000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	700000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	700000000	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	23000	usd
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-38796
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	47-5461709
	dei	Entity Address Address Line1 EntityAddressAddressLine1	3115 Merryfield Row, Suite 120
	dei	Entity Address City Or Town EntityAddressCityOrTown	San Diego
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	92121
	dei	City Area Code CityAreaCode	858
	dei	Local Phone Number LocalPhoneNumber	684-1300
	dei	Document Type DocumentType	10-Q
	dei	Entity Registrant Name EntityRegistrantName	GOSSAMER BIO, INC.
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	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	26738000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	29398000	usd
CY2024Q3	us-gaap	Operating Expenses OperatingExpenses	43399000	usd
CY2023Q3	us-gaap	Operating Expenses OperatingExpenses	40490000	usd
	us-gaap	Operating Expenses OperatingExpenses	129113000	usd
	us-gaap	Operating Expenses OperatingExpenses	134732000	usd
CY2024Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-33919000	usd
CY2023Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-40490000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	-23791000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	-134732000	usd
CY2024Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	430000	usd
CY2023Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	405000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	2523000	usd
	us-gaap	Investment Income Interest InvestmentIncomeInterest	1687000	usd
CY2024Q3	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	2734000	usd
CY2023Q3	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	3343000	usd
	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	8779000	usd
	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	10272000	usd
CY2023Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3420000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	9851000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	11648000	usd
CY2024Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1984000	usd
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	3595000	usd
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	3063000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-31935000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-40008000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-20196000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-131669000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1132000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3303000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	-30803000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	-40008000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-23499000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-131669000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2260000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-170000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2244000	usd
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-146000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	547000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	363000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	102000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1713000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-137000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1881000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-44000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-32516000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-40145000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-25380000	usd
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CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.14
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.21
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.10
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.03
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	226346058	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	192883209	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	226101727	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	128092499	shares
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	62769000	usd
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5811000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	348000	usd
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CY2024Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5001000	usd
CY2024Q2	goss	Adjustments To Additional Paid In Capital Equity Option Issued AdjustmentsToAdditionalPaidInCapitalEquityOptionIssued	464000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	49232000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	110000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	81529000	usd
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Entity Central Index Key EntityCentralIndexKey	0001728117
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023Q2	goss	Share Based Payment Arrangement Option Cancellation Percentage ShareBasedPaymentArrangementOptionCancellationPercentage	0.33
	dei	Security12b Title Security12bTitle	Common Stock, $0.0001 par value per share
	dei	Trading Symbol TradingSymbol	GOSS
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	28464000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	32109000	usd
CY2024Q3	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	298570000	usd
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CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	302000	usd
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CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	6026000	usd
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CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	51598000	usd
CY2024Q3	goss	Long Term Convertible Senior Notes LongTermConvertibleSeniorNotes	197285000	usd
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	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	102375000	usd
	us-gaap	Research And Development Expense Excluding Acquired In Process Cost ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost	105334000	usd
CY2024Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	8502000	usd
CY2024Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4288000	usd
CY2023Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	482000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	33000	usd
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.14
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.21
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.03
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	226346058	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	192883209	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	226101727	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	128092499	shares
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	-41928000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-278000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4842000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	281000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	-30803000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1713000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	54136000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	12077000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8127000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	367000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-49165000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	138000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	-28456000	usd
CY2023Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8197000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-42496000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-45000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	-62800000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	10779000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	201323000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6162000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	77000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	-40008000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-137000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	104617000	usd
	us-gaap	Profit Loss ProfitLoss	-23499000	usd
	us-gaap	Profit Loss ProfitLoss	-131669000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	725000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1315000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	15654000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	22486000	usd
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	2351000	usd
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	2064000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	848000	usd
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1013000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	9698000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	5868000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-621000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-726000	usd
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	6588000	usd
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	0	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	552000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	6400000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-335000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-31000	usd
	goss	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	2351000	usd
	goss	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	2216000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-4736000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-272000	usd
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-9778000	usd
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1255000	usd
	goss	Increase Decrease In Accrued Research And Development Expenses IncreaseDecreaseInAccruedResearchAndDevelopmentExpenses	2499000	usd
	goss	Increase Decrease In Accrued Research And Development Expenses IncreaseDecreaseInAccruedResearchAndDevelopmentExpenses	-3636000	usd
	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-290000	usd
	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-4483000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	64107000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	0	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	2365000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	2430000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	32013000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-125734000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	411093000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	321404000	usd
	goss	Proceeds From Maturity Of Marketable Securities ProceedsFromMaturityOfMarketableSecurities	386900000	usd
	goss	Proceeds From Maturity Of Marketable Securities ProceedsFromMaturityOfMarketableSecurities	224800000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-24193000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-96604000	usd
	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	0	usd
	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	201323000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	629000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	444000	usd
	goss	Proceeds From Issuance Of Equity Option ProceedsFromIssuanceOfEquityOption	464000	usd
	goss	Proceeds From Issuance Of Equity Option ProceedsFromIssuanceOfEquityOption	0	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	12581000	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	8710000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-11488000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	193057000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	23000	usd
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-83000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-3645000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-29364000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	32109000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	111973000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	28464000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	82609000	usd
	us-gaap	Interest Paid Net InterestPaidNet	5561000	usd
	us-gaap	Interest Paid Net InterestPaidNet	6831000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5246000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
	goss	Noncash Investing And Financing Activities Change In Unrealized Gain On Marketable Securities Net Of Tax NoncashInvestingAndFinancingActivitiesChangeInUnrealizedGainOnMarketableSecuritiesNetOfTax	363000	usd
	goss	Noncash Investing And Financing Activities Change In Unrealized Gain On Marketable Securities Net Of Tax NoncashInvestingAndFinancingActivitiesChangeInUnrealizedGainOnMarketableSecuritiesNetOfTax	102000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1235500000	usd
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:10pt;text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. These estimates and assumptions are based on current facts, historical experience and various other factors believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of </span></div><div style="margin-top:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results could differ from those estimates.</span></div>
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	102318469	shares
CY2024Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	102318469	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	63579374	shares
CY2023Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	63579374	shares
CY2024Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4027000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7080000	usd
CY2024Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3725000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5432000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	302000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1648000	usd
CY2024Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	200000	usd
CY2023Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	400000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	700000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1300000	usd
CY2024Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	10004000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	10294000	usd
CY2024Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1748000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3302000	usd
CY2024Q3	goss	Accrued Consulting Fees Current AccruedConsultingFeesCurrent	633000	usd
CY2023Q4	goss	Accrued Consulting Fees Current AccruedConsultingFeesCurrent	643000	usd
CY2024Q3	us-gaap	Interest Payable Current InterestPayableCurrent	3333000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	968000	usd
CY2024Q3	goss	Accrued Legal Fees Current AccruedLegalFeesCurrent	19000	usd
CY2023Q4	goss	Accrued Legal Fees Current AccruedLegalFeesCurrent	385000	usd
CY2024Q3	goss	Accrued Accounting Fees Current AccruedAccountingFeesCurrent	144000	usd
CY2023Q4	goss	Accrued Accounting Fees Current AccruedAccountingFeesCurrent	234000	usd
CY2024Q3	goss	Accrued In Process Research And Development Current AccruedInProcessResearchAndDevelopmentCurrent	0	usd
CY2023Q4	goss	Accrued In Process Research And Development Current AccruedInProcessResearchAndDevelopmentCurrent	10000000	usd
CY2024Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1103000	usd
CY2023Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	usd
CY2024Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	439000	usd
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	854000	usd
CY2024Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	17423000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	26680000	usd
CY2024Q3	us-gaap	Interest Receivable Current InterestReceivableCurrent	100000	usd
CY2023Q4	us-gaap	Interest Receivable Current InterestReceivableCurrent	0	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	298141000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	435000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	6000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	298570000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	4	security
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	264249000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	102000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	35000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	264316000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	12	security
CY2024Q3	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	25300000	usd
CY2023Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	25200000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Remainder Of Fiscal Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesRemainderOfFiscalYearFairValue	298570000	usd
CY2024Q3	goss	Available For Sale Securities Debt Maturities After One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneYearFairValue	0	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	298570000	usd
	goss	Common Stock Voting Rights Number Of Votes Per Share CommonStockVotingRightsNumberOfVotesPerShare	1	vote
CY2023Q3	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	212100000	usd
CY2023Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	750000	shares
CY2023Q2	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	1.36
CY2023Q2	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	1.36
CY2023Q2	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	6817057	shares
CY2023Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost	3400000	usd
CY2023Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2000000	usd
CY2023Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	1400000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	23626115	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.52
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y10M24D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	369000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	12602228	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.96
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	1132943	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	1.85
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	35095400	shares
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	1.98
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y8M12D
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1212000	usd
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	35095400	shares
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	1.98
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P7Y8M12D
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	1212000	usd
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	12484553	shares
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	3.55
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P5Y10M24D
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	19000	usd
CY2023Q3	us-gaap	Warrants And Rights Outstanding Term WarrantsAndRightsOutstandingTerm	P5Y
CY2024Q3	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	32467360	shares
CY2024Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4842000	usd
CY2023Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6162000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15654000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	22486000	usd
CY2024Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M
CY2024Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1012000	usd
CY2023Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	778000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	2569000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	2335000	usd
CY2024Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	9000	usd
CY2023Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	13000	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	30000	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	39000	usd
CY2024Q3	us-gaap	Lease Cost LeaseCost	1021000	usd
CY2023Q3	us-gaap	Lease Cost LeaseCost	791000	usd
	us-gaap	Lease Cost LeaseCost	2599000	usd
	us-gaap	Lease Cost LeaseCost	2374000	usd
CY2024Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	700000	usd
CY2023Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	600000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	2700000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	2500000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1197000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1519000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1397000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1406000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1448000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1237000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	8204000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1863000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	6341000	usd
CY2024Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1748000	usd
CY2024Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	4593000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	6341000	usd
CY2024Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	1100000	usd
CY2023Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	900000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	2800000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	2600000	usd
CY2024Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	20300000	usd
CY2024Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	43800000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1100000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3300000	usd
CY2024Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.035
CY2023Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.164
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
FilingSummary.xml	Edgar Link	unprocessable
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0001728117-24-000092-index.html	Edgar Link	pending
0001728117-24-000092.txt	Edgar Link	pending
0001728117-24-000092-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
goss-20240930.htm	Edgar Link	pending
goss-20240930.xsd	Edgar Link	pending
goss-20240930x10qxexx311.htm	Edgar Link	pending
goss-20240930x10qxexx312.htm	Edgar Link	pending
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goss-20240930x10qxexx322.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
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R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
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R40.htm	Edgar Link	pending
goss-20240930_def.xml	Edgar Link	unprocessable
goss-20240930_lab.xml	Edgar Link	unprocessable
goss-20240930_htm.xml	Edgar Link	completed
goss-20240930_pre.xml	Edgar Link	unprocessable
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R42.htm	Edgar Link	pending
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R53.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
goss-20240930_cal.xml	Edgar Link	unprocessable

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$GOSS
Gossamer Bio, Inc. Stock $goss

2024 Q4 Form 10-Q Financial Statement

#000172811724000092 Filed on November 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GOSS Gossamer Bio, Inc. Stock $goss

2024 Q4 Form 10-Q Financial Statement

#000172811724000092 Filed on November 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GOSS
Gossamer Bio, Inc. Stock $goss