2024 Q2 Form 10-Q Financial Statement

#000095017024058718 Filed on May 13, 2024

View on sec.gov

Income Statement

Concept 2024 Q2 2024 Q1
Revenue $25.71M $13.01M
YoY Change 146.89% 2.64%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin $12.37M $12.72M
YoY Change -17.52% -17.99%
% of Gross Profit
Research & Development $62.02M $56.88M
YoY Change 49.12% 44.36%
% of Gross Profit
Depreciation & Amortization $1.790M $1.761M
YoY Change 3.41% 9.04%
% of Gross Profit
Operating Expenses $74.39M $69.60M
YoY Change 31.45% 26.75%
Operating Profit -$48.69M -$56.59M
YoY Change 5.43% 33.98%
Interest Expense $7.961M $5.562M
YoY Change -3.48% -174.98%
% of Operating Profit
Other Income/Expense, Net -$7.286M -$7.184M
YoY Change 1548.42%
Pretax Income -$48.01M -$58.21M
YoY Change 25.11% 17.23%
Income Tax $8.000K $0.00
% Of Pretax Income
Net Earnings -$48.02M -$58.21M
YoY Change 24.64% 16.31%
Net Earnings / Revenue -186.8% -447.52%
Basic Earnings Per Share -$0.59 -$0.95
Diluted Earnings Per Share -$0.59 -$0.95
COMMON SHARES
Basic Shares Outstanding 81.79M 62.44M
Diluted Shares Outstanding 81.22M 61.46M

Balance Sheet

Concept 2024 Q2 2024 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments $426.0M $313.2M
YoY Change 8.77% 13.28%
Cash & Equivalents $90.79M $65.22M
Short-Term Investments $335.2M $248.0M
Other Short-Term Assets $10.53M $10.06M
YoY Change 1.83% -43.13%
Inventory
Prepaid Expenses
Receivables $6.950M $31.30M
Other Receivables $0.00 $0.00
Total Short-Term Assets $443.5M $354.6M
YoY Change 7.64% 16.61%
LONG-TERM ASSETS
Property, Plant & Equipment $19.41M $20.63M
YoY Change -17.86% -14.15%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets $4.964M $5.739M
YoY Change 51.9% 76.58%
Total Long-Term Assets $45.57M $48.82M
YoY Change -13.88% -9.51%
TOTAL ASSETS
Total Short-Term Assets $443.5M $354.6M
Total Long-Term Assets $45.57M $48.82M
Total Assets $489.0M $403.4M
YoY Change 5.19% 12.68%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $6.086M $7.511M
YoY Change 57.83% 48.5%
Accrued Expenses $9.940M $7.077M
YoY Change 4.53% 11.34%
Deferred Revenue $73.96M $20.50M
YoY Change 310.09% 19.29%
Short-Term Debt $0.00 $0.00
YoY Change
Long-Term Debt Due $0.00 $0.00
YoY Change -100.0% -100.0%
Total Short-Term Liabilities $130.0M $79.51M
YoY Change 93.65% 33.66%
LONG-TERM LIABILITIES
Long-Term Debt $0.00 $0.00
YoY Change
Other Long-Term Liabilities $1.694M $1.694M
YoY Change -99.3% -98.5%
Total Long-Term Liabilities $1.694M $1.694M
YoY Change -99.3% -98.5%
TOTAL LIABILITIES
Total Short-Term Liabilities $130.0M $79.51M
Total Long-Term Liabilities $1.694M $1.694M
Total Liabilities $336.9M $305.4M
YoY Change 8.6% 76.93%
SHAREHOLDERS EQUITY
Retained Earnings -$665.6M -$617.6M
YoY Change 22.99% 22.86%
Common Stock $818.0M $715.8M
YoY Change 17.54% 4.01%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $152.2M $98.02M
YoY Change
Total Liabilities & Shareholders Equity $489.0M $403.4M
YoY Change 5.19% 12.68%

Cashflow Statement

Concept 2024 Q2 2024 Q1
OPERATING ACTIVITIES
Net Income -$48.02M -$58.21M
YoY Change 24.64% 16.31%
Depreciation, Depletion And Amortization $1.790M $1.761M
YoY Change 3.41% 9.04%
Cash From Operating Activities $9.455M -$64.74M
YoY Change -130.31% 6.15%
INVESTING ACTIVITIES
Capital Expenditures $756.0K $446.0K
YoY Change -52.87% -52.65%
Acquisitions
YoY Change
Other Investing Activities -$79.62M $64.55M
YoY Change -217.5% -5.62%
Cash From Investing Activities -$80.38M $64.11M
YoY Change -221.49% -4.96%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 96.49M -3.429M
YoY Change -29.91% -139.15%
NET CHANGE
Cash From Operating Activities 9.455M -64.74M
Cash From Investing Activities -80.38M 64.11M
Cash From Financing Activities 96.49M -3.429M
Net Change In Cash 25.57M -4.065M
YoY Change -85.19% -126.71%
FREE CASH FLOW
Cash From Operating Activities $9.455M -$64.74M
Capital Expenditures $756.0K $446.0K
Free Cash Flow $8.699M -$65.19M
YoY Change -126.52% 5.25%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2024Q1 dei Amendment Flag
AmendmentFlag
false
CY2024Q1 dei Document Fiscal Period Focus
DocumentFiscalPeriodFocus
Q1
CY2024Q1 dei Entity Central Index Key
EntityCentralIndexKey
0001382101
CY2024Q1 dei Current Fiscal Year End Date
CurrentFiscalYearEndDate
--12-31
CY2024Q1 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2023Q4 us-gaap Commitments And Contingencies
CommitmentsAndContingencies
CY2024Q1 us-gaap Preferred Stock Value
PreferredStockValue
CY2023Q4 us-gaap Preferred Stock Value
PreferredStockValue
CY2024Q1 dei Document Type
DocumentType
10-Q
CY2024Q1 dei Document Quarterly Report
DocumentQuarterlyReport
true
CY2024Q1 dei Document Period End Date
DocumentPeriodEndDate
2024-03-31
CY2024Q1 dei Document Fiscal Year Focus
DocumentFiscalYearFocus
2024
CY2024Q1 dei Document Transition Report
DocumentTransitionReport
false
CY2024Q1 dei Entity File Number
EntityFileNumber
001-38662
CY2024Q1 dei Entity Registrant Name
EntityRegistrantName
SUTRO BIOPHARMA, INC.
CY2024Q1 dei Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
DE
CY2024Q1 dei Entity Tax Identification Number
EntityTaxIdentificationNumber
47-0926186
CY2024Q1 dei Entity Address Address Line1
EntityAddressAddressLine1
111 Oyster Point Blvd
CY2024Q1 dei Entity Address City Or Town
EntityAddressCityOrTown
South San Francisco
CY2024Q1 dei Entity Address State Or Province
EntityAddressStateOrProvince
CA
CY2024Q1 dei Entity Address Postal Zip Code
EntityAddressPostalZipCode
94080
CY2024Q1 dei City Area Code
CityAreaCode
650
CY2024Q1 dei Local Phone Number
LocalPhoneNumber
881-6500
CY2024Q1 dei Security12b Title
Security12bTitle
Common stock, $0.001 par value
CY2024Q1 dei Trading Symbol
TradingSymbol
STRO
CY2024Q1 dei Security Exchange Name
SecurityExchangeName
NASDAQ
CY2024Q1 dei Entity Current Reporting Status
EntityCurrentReportingStatus
Yes
CY2024Q1 dei Entity Interactive Data Current
EntityInteractiveDataCurrent
Yes
CY2024Q1 dei Entity Filer Category
EntityFilerCategory
Non-accelerated Filer
CY2024Q1 dei Entity Small Business
EntitySmallBusiness
true
CY2024Q1 dei Entity Emerging Growth Company
EntityEmergingGrowthCompany
false
CY2024Q1 dei Entity Shell Company
EntityShellCompany
false
CY2024Q2 dei Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
81794334
CY2024Q1 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
65218000
CY2023Q4 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
69268000
CY2024Q1 us-gaap Marketable Securities Current
MarketableSecuritiesCurrent
202384000
CY2023Q4 us-gaap Marketable Securities Current
MarketableSecuritiesCurrent
264413000
CY2024Q1 us-gaap Equity Securities Fv Ni
EquitySecuritiesFvNi
45616000
CY2023Q4 us-gaap Equity Securities Fv Ni
EquitySecuritiesFvNi
41937000
CY2024Q1 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
31300000
CY2023Q4 us-gaap Accounts Receivable Net Current
AccountsReceivableNetCurrent
36078000
CY2024Q1 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
10064000
CY2023Q4 us-gaap Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
9846000
CY2024Q1 us-gaap Assets Current
AssetsCurrent
354582000
CY2023Q4 us-gaap Assets Current
AssetsCurrent
421542000
CY2024Q1 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
20630000
CY2023Q4 us-gaap Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
21940000
CY2024Q1 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
21594000
CY2023Q4 us-gaap Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
22815000
CY2024Q1 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
5739000
CY2023Q4 us-gaap Other Assets Noncurrent
OtherAssetsNoncurrent
3567000
CY2024Q1 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
857000
CY2023Q4 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
872000
CY2024Q1 us-gaap Assets
Assets
403402000
CY2023Q4 us-gaap Assets
Assets
470736000
CY2024Q1 us-gaap Accounts Payable Current
AccountsPayableCurrent
7511000
CY2023Q4 us-gaap Accounts Payable Current
AccountsPayableCurrent
9440000
CY2024Q1 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
7077000
CY2023Q4 us-gaap Accrued Liabilities Current
AccruedLiabilitiesCurrent
14686000
CY2024Q1 us-gaap Contract With Customer Liability Current
ContractWithCustomerLiabilityCurrent
20502000
CY2023Q4 us-gaap Contract With Customer Liability Current
ContractWithCustomerLiabilityCurrent
20666000
CY2024Q1 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
6673000
CY2023Q4 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
6420000
CY2023Q4 us-gaap Debt Current
DebtCurrent
4061000
CY2024Q1 stro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
37746000
CY2023Q4 stro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
38473000
CY2024Q1 us-gaap Liabilities Current
LiabilitiesCurrent
79509000
CY2023Q4 us-gaap Liabilities Current
LiabilitiesCurrent
93746000
CY2024Q1 us-gaap Contract With Customer Liability Noncurrent
ContractWithCustomerLiabilityNoncurrent
46313000
CY2023Q4 us-gaap Contract With Customer Liability Noncurrent
ContractWithCustomerLiabilityNoncurrent
53379000
CY2024Q1 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
21397000
CY2023Q4 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
23154000
CY2024Q1 stro Deferred Royalty Obligation Related To Sale Of Future Royalties Noncurrent
DeferredRoyaltyObligationRelatedToSaleOfFutureRoyaltiesNoncurrent
156465000
CY2023Q4 stro Deferred Royalty Obligation Related To Sale Of Future Royalties Noncurrent
DeferredRoyaltyObligationRelatedToSaleOfFutureRoyaltiesNoncurrent
149114000
CY2024Q1 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
1694000
CY2023Q4 us-gaap Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
1694000
CY2024Q1 us-gaap Liabilities
Liabilities
305378000
CY2023Q4 us-gaap Liabilities
Liabilities
321087000
CY2024Q1 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2023Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2024Q1 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2023Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2024Q1 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2023Q4 us-gaap Preferred Stock Shares Issued
PreferredStockSharesIssued
0
CY2024Q1 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2023Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2024Q1 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2023Q4 us-gaap Common Stock Par Or Stated Value Per Share
CommonStockParOrStatedValuePerShare
0.001
CY2024Q1 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
300000000
CY2023Q4 us-gaap Common Stock Shares Authorized
CommonStockSharesAuthorized
300000000
CY2024Q1 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
62456546
CY2024Q1 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
62456546
CY2023Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
61009829
CY2023Q4 us-gaap Common Stock Shares Outstanding
CommonStockSharesOutstanding
61009829
CY2024Q1 us-gaap Common Stock Value
CommonStockValue
62000
CY2023Q4 us-gaap Common Stock Value
CommonStockValue
61000
CY2024Q1 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
715696000
CY2023Q4 us-gaap Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
708975000
CY2024Q1 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
-113000
CY2023Q4 us-gaap Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
21000
CY2024Q1 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-617621000
CY2023Q4 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-559408000
CY2024Q1 us-gaap Stockholders Equity
StockholdersEquity
98024000
CY2023Q4 us-gaap Stockholders Equity
StockholdersEquity
149649000
CY2024Q1 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
403402000
CY2023Q4 us-gaap Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
470736000
CY2024Q1 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
13008000
CY2023Q1 us-gaap Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
12674000
CY2024Q1 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
56878000
CY2023Q1 us-gaap Research And Development Expense
ResearchAndDevelopmentExpense
39399000
CY2024Q1 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
12721000
CY2023Q1 us-gaap General And Administrative Expense
GeneralAndAdministrativeExpense
15512000
CY2024Q1 us-gaap Operating Expenses
OperatingExpenses
69599000
CY2023Q1 us-gaap Operating Expenses
OperatingExpenses
54911000
CY2024Q1 us-gaap Operating Income Loss
OperatingIncomeLoss
-56591000
CY2023Q1 us-gaap Operating Income Loss
OperatingIncomeLoss
-42237000
CY2024Q1 us-gaap Investment Income Nonoperating
InvestmentIncomeNonoperating
4096000
CY2023Q1 us-gaap Investment Income Nonoperating
InvestmentIncomeNonoperating
2560000
CY2024Q1 us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
3679000
CY2023Q1 us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
-6992000
CY2024Q1 stro Non Cash Interest Expense Related To The Sale Of Future Royalties
NonCashInterestExpenseRelatedToTheSaleOfFutureRoyalties
7184000
CY2024Q1 stro Interest And Other Income Expense Net
InterestAndOtherIncomeExpenseNet
-2213000
CY2023Q1 stro Interest And Other Income Expense Net
InterestAndOtherIncomeExpenseNet
-2986000
CY2024Q1 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-58213000
CY2023Q1 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-49655000
CY2023Q1 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
395000
CY2024Q1 us-gaap Net Income Loss
NetIncomeLoss
-58213000
CY2023Q1 us-gaap Net Income Loss
NetIncomeLoss
-50050000
CY2024Q1 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-0.95
CY2024Q1 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-0.95
CY2023Q1 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-0.85
CY2023Q1 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-0.85
CY2024Q1 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
61457793
CY2024Q1 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
61457793
CY2023Q1 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
58723432
CY2023Q1 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
58723432
CY2024Q1 us-gaap Net Income Loss
NetIncomeLoss
-58213000
CY2023Q1 us-gaap Net Income Loss
NetIncomeLoss
-50050000
CY2024Q1 us-gaap Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
-134000
CY2023Q1 us-gaap Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
511000
CY2024Q1 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-58347000
CY2023Q1 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
-49539000
CY2023Q4 us-gaap Stockholders Equity
StockholdersEquity
149649000
CY2024Q1 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
117000
CY2024Q1 us-gaap Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
911000
CY2024Q1 us-gaap Adjustments Related To Tax Withholding For Share Based Compensation
AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
374000
CY2024Q1 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
6068000
CY2024Q1 us-gaap Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
-134000
CY2024Q1 us-gaap Net Income Loss
NetIncomeLoss
-58213000
CY2024Q1 us-gaap Stockholders Equity
StockholdersEquity
98024000
CY2022Q4 us-gaap Stockholders Equity
StockholdersEquity
217048000
CY2023Q1 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
314000
CY2023Q1 us-gaap Stock Issued During Period Value Employee Stock Purchase Plan
StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
1097000
CY2023Q1 us-gaap Adjustments Related To Tax Withholding For Share Based Compensation
AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
451000
CY2023Q1 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
6021000
CY2023Q1 stro Stock Issued During Period Value Through At The Market Sale
StockIssuedDuringPeriodValueThroughAtTheMarketSale
10923000
CY2023Q1 us-gaap Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax
OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
511000
CY2023Q1 us-gaap Net Income Loss
NetIncomeLoss
-50050000
CY2023Q1 us-gaap Stockholders Equity
StockholdersEquity
185413000
CY2024Q1 us-gaap Profit Loss
ProfitLoss
-58213000
CY2023Q1 us-gaap Profit Loss
ProfitLoss
-50050000
CY2024Q1 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
1761000
CY2023Q1 us-gaap Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
1615000
CY2024Q1 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
2656000
CY2023Q1 us-gaap Accretion Amortization Of Discounts And Premiums Investments
AccretionAmortizationOfDiscountsAndPremiumsInvestments
1786000
CY2024Q1 us-gaap Share Based Compensation
ShareBasedCompensation
6068000
CY2023Q1 us-gaap Share Based Compensation
ShareBasedCompensation
6021000
CY2024Q1 stro Noncash Lease Expenses
NoncashLeaseExpenses
1221000
CY2023Q1 stro Noncash Lease Expenses
NoncashLeaseExpenses
641000
CY2024Q1 us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
3679000
CY2023Q1 us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
-6992000
CY2024Q1 stro Non Cash Interest Expense On Deferred Royalty Obligation
NonCashInterestExpenseOnDeferredRoyaltyObligation
7184000
CY2024Q1 us-gaap Other Noncash Income Expense
OtherNoncashIncomeExpense
-189000
CY2023Q1 us-gaap Other Noncash Income Expense
OtherNoncashIncomeExpense
13000
CY2024Q1 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
-4778000
CY2023Q1 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
2751000
CY2024Q1 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
2390000
CY2023Q1 us-gaap Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
7424000
CY2024Q1 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
-1897000
CY2023Q1 us-gaap Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
198000
CY2024Q1 us-gaap Increase Decrease In Employee Related Liabilities
IncreaseDecreaseInEmployeeRelatedLiabilities
-7609000
CY2023Q1 us-gaap Increase Decrease In Employee Related Liabilities
IncreaseDecreaseInEmployeeRelatedLiabilities
-6786000
CY2024Q1 stro Increase Decrease In Accrued Expenses And Other Liabilities
IncreaseDecreaseInAccruedExpensesAndOtherLiabilities
-765000
CY2023Q1 stro Increase Decrease In Accrued Expenses And Other Liabilities
IncreaseDecreaseInAccruedExpensesAndOtherLiabilities
-2399000
CY2024Q1 us-gaap Increase Decrease In Contract With Customer Liability
IncreaseDecreaseInContractWithCustomerLiability
-7230000
CY2023Q1 us-gaap Increase Decrease In Contract With Customer Liability
IncreaseDecreaseInContractWithCustomerLiability
-4412000
CY2024Q1 us-gaap Increase Decrease In Operating Lease Liability
IncreaseDecreaseInOperatingLeaseLiability
-1503000
CY2023Q1 us-gaap Increase Decrease In Operating Lease Liability
IncreaseDecreaseInOperatingLeaseLiability
-837000
CY2024Q1 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-64741000
CY2023Q1 us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
-60991000
CY2024Q1 us-gaap Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
135001000
CY2023Q1 us-gaap Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
52764000
CY2024Q1 stro Proceeds From Maturities Of Marketable Securities
ProceedsFromMaturitiesOfMarketableSecurities
199262000
CY2023Q1 stro Proceeds From Maturities Of Marketable Securities
ProceedsFromMaturitiesOfMarketableSecurities
112102000
CY2024Q1 stro Proceeds From Sales Of Marketable Securities
ProceedsFromSalesOfMarketableSecurities
290000
CY2023Q1 stro Proceeds From Sales Of Marketable Securities
ProceedsFromSalesOfMarketableSecurities
9055000
CY2024Q1 stro Payments To Acquire Equipment And Leasehold Improvements
PaymentsToAcquireEquipmentAndLeaseholdImprovements
446000
CY2023Q1 stro Payments To Acquire Equipment And Leasehold Improvements
PaymentsToAcquireEquipmentAndLeaseholdImprovements
942000
CY2024Q1 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
64105000
CY2023Q1 us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
67451000
CY2023Q1 us-gaap Proceeds From Issuance Initial Public Offering
ProceedsFromIssuanceInitialPublicOffering
10923000
CY2024Q1 us-gaap Repayments Of Debt
RepaymentsOfDebt
4083000
CY2023Q1 us-gaap Repayments Of Debt
RepaymentsOfDebt
3125000
CY2024Q1 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
117000
CY2023Q1 us-gaap Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
314000
CY2024Q1 us-gaap Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
374000
CY2023Q1 us-gaap Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
451000
CY2024Q1 us-gaap Proceeds From Stock Plans
ProceedsFromStockPlans
911000
CY2023Q1 us-gaap Proceeds From Stock Plans
ProceedsFromStockPlans
1097000
CY2024Q1 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
-3429000
CY2023Q1 us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
8758000
CY2024Q1 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
-4065000
CY2023Q1 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
15218000
CY2023Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
70140000
CY2022Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
48126000
CY2024Q1 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
66075000
CY2023Q1 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
63344000
CY2024Q1 us-gaap Interest Paid Net
InterestPaidNet
63000
CY2023Q1 us-gaap Interest Paid Net
InterestPaidNet
393000
CY2024Q1 us-gaap Income Taxes Paid Net
IncomeTaxesPaidNet
10000
CY2024Q1 us-gaap Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
219000
CY2023Q1 us-gaap Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
371000
CY2024Q1 stro Financing Component Associated With Program Fees
FinancingComponentAssociatedWithProgramFees
2160000
CY2023Q1 stro Financing Component Associated With Program Fees
FinancingComponentAssociatedWithProgramFees
2543000
CY2024Q1 stro Deferred Offering Cost Included In Accounts Payable And Accrued Expenses
DeferredOfferingCostIncludedInAccountsPayableAndAccruedExpenses
528000
CY2023Q1 stro Deferred Offering Cost Included In Accounts Payable And Accrued Expenses
DeferredOfferingCostIncludedInAccountsPayableAndAccruedExpenses
101000
CY2024Q1 us-gaap Nature Of Operations
NatureOfOperations
<p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Arial;min-width:fit-content;">1. Organization and Principal Activities</span></p><p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Arial;font-style:italic;min-width:fit-content;">Description of Business</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Arial;font-style:italic;min-width:fit-content;"> </span></p><p style="text-indent:3.333%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">Sutro Biopharma, Inc. (the “Company”), is a clinical-stage oncology company developing site-specific and novel-format antibody drug conjugates, or ADCs. The Company was incorporated on </span><span style="font-size:10pt;font-family:Arial;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">April 21, 2003</span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">, and is headquartered in </span><span style="font-size:10pt;font-family:Arial;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">South San Francisco</span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">, </span><span style="font-size:10pt;font-family:Arial;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">California</span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">.</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> </span></p><p style="text-indent:3.333%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">The Company operates in </span><span style="font-size:10pt;font-family:Arial;color:#000000;white-space:pre-wrap;min-width:fit-content;">one</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> business segment, the development of biopharmaceutical products. Operating segments are components of an enterprise for which separate financial information is available and is evaluated regularly by the Chief Executive Officer, the Company’s chief operating decision maker, in deciding how to allocate resources and assessing performance. The Company operates and manages its business as one operating segment. The Company’s Chief Executive Officer reviews financial information on an aggregate basis for the purposes of allocating and evaluating financial performance.</span></p><p style="text-indent:3.333%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">All of the Company’s long-lived assets are maintained in the United States.</span></p><p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Arial;font-style:italic;min-width:fit-content;">Liquidity</span></p><p style="text-indent:3.333%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">The Company has incurred significant losses and has negative cash flows from operations. As of March 31, 2024, there was an accumulated deficit of $</span><span style="font-size:10pt;font-family:Arial;color:#000000;white-space:pre-wrap;min-width:fit-content;">617.6</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> million. Management expects to continue to incur additional </span><span style="font-size:10pt;font-family:Arial;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">substantial</span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> losses in the foreseeable future as a result of the Company’s research and development and other operational activities.</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> </span></p><p style="text-indent:3.333%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">As of March 31, 2024, the Company had unrestricted cash, cash equivalents, and marketable securities of $</span><span style="font-size:10pt;font-family:Arial;color:#000000;white-space:pre-wrap;min-width:fit-content;">267.6</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> million and equity securities of $</span><span style="font-size:10pt;font-family:Arial;color:#000000;white-space:pre-wrap;min-width:fit-content;">45.6</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> million, consisting solely of common stock of Vaxcyte, which are available to fund future operations. The Company will need to raise additional capital to support the completion of its research and development activities and to support its operations.</span></p><p style="text-indent:3.333%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">The Company believes that its unrestricted cash, cash equivalents, marketable securities and investments in equity securities</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> as of March 31, 2024, will enable the Company to maintain its operations for a period of at least </span><span style="font-size:10pt;font-family:Arial;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;">12</span></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> months following the filing date of its condensed financial statements.</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Arial;min-width:fit-content;"> </span></p>
CY2024Q1 dei Entity Incorporation Date Of Incorporation
EntityIncorporationDateOfIncorporation
2003-04-21
CY2024Q1 dei Entity Address City Or Town
EntityAddressCityOrTown
South San Francisco
CY2024Q1 dei Entity Address State Or Province
EntityAddressStateOrProvince
CA
CY2024Q1 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2024Q1 us-gaap Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
-617600000
CY2024Q1 us-gaap Substantial Doubt About Going Concern Within One Year
SubstantialDoubtAboutGoingConcernWithinOneYear
false
CY2024Q1 stro Unrestricted Cash Cash Equivalents And Marketable Securities At Carrying Value
UnrestrictedCashCashEquivalentsAndMarketableSecuritiesAtCarryingValue
267600000
CY2023Q4 us-gaap Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss
DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
110900000
CY2024Q1 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
65218000
CY2023Q1 us-gaap Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
62472000
CY2024Q1 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
857000
CY2023Q1 us-gaap Restricted Cash Noncurrent
RestrictedCashNoncurrent
872000
CY2024Q1 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
66075000
CY2023Q1 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
63344000
CY2024Q1 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
265754000
CY2024Q1 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
3000
CY2024Q1 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
116000
CY2024Q1 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
265641000
CY2023Q4 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
329540000
CY2023Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
54000
CY2023Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
33000
CY2023Q4 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
329561000
CY2024Q1 us-gaap Marketable Securities Noncurrent
MarketableSecuritiesNoncurrent
0
CY2023Q4 us-gaap Marketable Securities Noncurrent
MarketableSecuritiesNoncurrent
0
CY2024Q1 us-gaap Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss
DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
190500000
CY2024Q1 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
100000
CY2023Q4 us-gaap Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax
AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
33000
CY2024Q1 us-gaap Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings
OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings
0
CY2023Q1 us-gaap Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings
OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings
0
CY2024Q1 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
0
CY2023Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
0
CY2024Q1 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
20500000
CY2024Q1 us-gaap Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1
RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
P12M
CY2024Q1 us-gaap Operating Lease Cost
OperatingLeaseCost
1984000
CY2023Q1 us-gaap Operating Lease Cost
OperatingLeaseCost
1538000
CY2024Q1 us-gaap Short Term Lease Cost
ShortTermLeaseCost
53000
CY2023Q1 us-gaap Short Term Lease Cost
ShortTermLeaseCost
24000
CY2024Q1 us-gaap Variable Lease Cost
VariableLeaseCost
594000
CY2023Q1 us-gaap Variable Lease Cost
VariableLeaseCost
410000
CY2024Q1 us-gaap Lease Cost
LeaseCost
2631000
CY2023Q1 us-gaap Lease Cost
LeaseCost
1972000
CY2024Q1 us-gaap Operating Lease Expense
OperatingLeaseExpense
2000000
CY2023Q1 us-gaap Operating Lease Expense
OperatingLeaseExpense
1500000
CY2023Q4 stro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
38473000
CY2024Q1 stro Percentage Of Interest Rate Amortize Liability
PercentageOfInterestRateAmortizeLiability
0.19
CY2024Q1 stro Non Cash Interest Expense On Deferred Royalty Obligation
NonCashInterestExpenseOnDeferredRoyaltyObligation
7200000
CY2023Q1 stro Non Cash Interest Expense On Deferred Royalty Obligation
NonCashInterestExpenseOnDeferredRoyaltyObligation
0
CY2024Q1 us-gaap Operating Lease Payments
OperatingLeasePayments
2300000
CY2023Q1 us-gaap Operating Lease Payments
OperatingLeasePayments
1700000
CY2024Q1 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P3Y7M6D
CY2023Q4 us-gaap Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
P3Y9M18D
CY2024Q1 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.108
CY2023Q4 us-gaap Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
0.108
CY2024Q1 us-gaap Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
6951000
CY2024Q1 us-gaap Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
9533000
CY2024Q1 us-gaap Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
8994000
CY2024Q1 us-gaap Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
8289000
CY2024Q1 us-gaap Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
33767000
CY2024Q1 us-gaap Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
5697000
CY2024Q1 us-gaap Operating Lease Liability
OperatingLeaseLiability
28070000
CY2024Q1 us-gaap Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
6673000
CY2024Q1 us-gaap Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
21397000
CY2024Q1 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
15165000
CY2023Q4 us-gaap Accrued Income Taxes Current
AccruedIncomeTaxesCurrent
15165000
CY2024Q1 us-gaap Other Liabilities Current
OtherLiabilitiesCurrent
3407000
CY2023Q4 us-gaap Other Liabilities Current
OtherLiabilitiesCurrent
3897000
CY2024Q1 stro Accrued Expenses And Other Current Liabilities
AccruedExpensesAndOtherCurrentLiabilities
37746000
CY2024Q1 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
6068000
CY2023Q1 us-gaap Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
6021000
CY2024Q1 us-gaap Net Income Loss
NetIncomeLoss
-58213000
CY2023Q1 us-gaap Net Income Loss
NetIncomeLoss
-50050000
CY2024Q1 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
61457793
CY2024Q1 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
61457793
CY2023Q1 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
58723432
CY2023Q1 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
58723432
CY2024Q1 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-0.95
CY2024Q1 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-0.95
CY2023Q1 us-gaap Earnings Per Share Basic
EarningsPerShareBasic
-0.85
CY2023Q1 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
-0.85
CY2024Q1 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
15133565
CY2023Q1 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
13850196
CY2024Q1 us-gaap Common Stock Voting Rights
CommonStockVotingRights
one vote per share
CY2024Q1 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
17647008
CY2023Q4 us-gaap Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
15970351
CY2024Q1 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2023Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
10000000
CY2024Q1 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2023Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
0.001
CY2024Q1 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2023Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0

Files In Submission

Name View Source Status
0000950170-24-058718-index-headers.html Edgar Link pending
0000950170-24-058718-index.html Edgar Link pending
0000950170-24-058718.txt Edgar Link pending
0000950170-24-058718-xbrl.zip Edgar Link pending
Financial_Report.xlsx Edgar Link pending
MetaLinks.json Edgar Link pending
R1.htm Edgar Link pending
R10.htm Edgar Link pending
R11.htm Edgar Link pending
R12.htm Edgar Link pending
R13.htm Edgar Link pending
R14.htm Edgar Link pending
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R57.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
stro-20240331.htm Edgar Link pending
stro-20240331.xsd Edgar Link pending
stro-ex10_1.htm Edgar Link pending
stro-ex31_1.htm Edgar Link pending
stro-ex31_2.htm Edgar Link pending
stro-ex32_1.htm Edgar Link pending
stro-ex32_2.htm Edgar Link pending
stro-20240331_htm.xml Edgar Link completed
FilingSummary.xml Edgar Link unprocessable