Liabilities / Assets
37th percentile
Higher debt load relative to assets than 37% of similar nonprofits.
EIN 81-4308701 • 501(c)3 • Brooklyn, NY
Profile
First street foundation's mission is to make climate risk accessible, easy to understand and actionable for individuals, governments, and industry.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
37th percentile
Higher debt load relative to assets than 37% of similar nonprofits.
Liabilities / Revenue
26th percentile
Higher debt load relative to revenue than 26% of similar nonprofits.
Net Margin
96th percentile
Higher net margin than 96% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
96th percentile
Faster asset growth than 96% of similar nonprofits.
Revenue Growth
88th percentile
Faster revenue growth than 88% of similar nonprofits.
Assets
Up$17,030,839
Up $12,639,195 (+288%) from 2022
Liabilities
Up$1,500,000
Up $726,243 (+94%) from 2022
Net Assets
Up$15,530,839
Up $11,912,952 (+329%) from 2022
Revenue
Up$19,464,008
Up $11,771,587 (+153%) from 2022
Expenses
Down$3,136,557
Down $4,763,797 (-60%) from 2022
Net Income
Up$16,327,451
Up $16,535,384 (+7952%) from 2022
Most recent year
2024 • Form 990Summary only. Only limited summary data is available for this year.
First street foundation's mission is to make climate risk accessible, easy to understand and actionable for individuals, governments, and industry.
to Make climate risk accessible, easy to understand and actionable for individuals, governments, and industry.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Cash and Non-Interest-Bearing Accounts | $581,121 | $10,161,948 | ▲ $9,580,827 |
| Investments Other Securities | $0 | $6,798,474 | ▲ $6,798,474 |
| Land, Buildings, and Equipment, Net | $1,746,986 | $0 | ▼ $1,746,986 |
| Pledges and Grants Receivable | $200,000 | $0 | ▼ $200,000 |
| Accounts Receivable | $119,044 | $70,417 | ▼ $48,627 |
| Savings and Temporary Cash Investments | $0 | $0 | → $0 |
| Other Notes and Loans Receivable, Net | $0 | $0 | → $0 |
| Receivable From Disqualified Prsn | $0 | $0 | → $0 |
| Receivables From Officers Etc | $0 | $0 | → $0 |
| Investments Program Related | $0 | $0 | → $0 |
| Investments in Publicly Traded Securities | $0 | $0 | → $0 |
| Intangible Assets | $0 | $0 | → $0 |
| Inventories for Sale or Use | $0 | $0 | → $0 |
| Loans From Officers Directors | $0 | $0 | → $0 |
| Prepaid Expenses and Deferred Charges | $0 | $0 | → $0 |
| Total Assets | $2,668,751 | $17,030,839 | ▲ $14,362,088 |
| Other Assets Total | $21,600 | $0 | ▼ $21,600 |
| Liabilities | |||
| Deferred Revenue | $1,674,975 | $0 | ▼ $1,674,975 |
| Other Liabilities | $1,500,000 | $1,500,000 | → $0 |
| Accounts Payable and Accrued Expenses | $290,388 | $0 | ▼ $290,388 |
| Grants Payable | $0 | $0 | → $0 |
| Mortgage Notes Payable Secured by Investment Property | $0 | $0 | → $0 |
| Unsecured Notes Loans Payable | $0 | $0 | → $0 |
| Escrow Account Liability | $0 | $0 | → $0 |
| Tax Exempt Bond Liabilities | $0 | $0 | → $0 |
| Total Liabilities | $3,465,363 | $1,500,000 | ▼ $1,965,363 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $-796,612 | $15,530,839 | ▲ $16,327,451 |
| Net Assets With Donor Restrictions | $0 | $0 | → $0 |
| Total Net Assets Fund Balance | $-796,612 | $15,530,839 | ▲ $16,327,451 |
| Total Liabilities and Net Assets / Fund Balance | $2,668,751 | $17,030,839 | ▲ $14,362,088 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Securities | $6,798,474 | - | - |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Edward J Kearns | CHIEF DATA OFFICER (Thru 2/24) | FT | $71,609 | $6,050 | $77,659 |
| Matthew Eby | PRES. & EXE. Director (Thru 2/24) | FT | $50,988 | $3,061 | $54,049 |
| Name | Title |
|---|---|
| Keith Pardy | Director/chair |
| Phillip Lundie | Treasurer |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Morrison Foerster | Legal Services | PO Box 742335, Los Angeles, CA 90074-2335 | $132,801 |
| Spatial Informatics Group | Software Engineering | 2529 YOLANDA CT, Pleasanton, CA 94566 | $103,166 |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $1,230,226 |
| Grants and Similar Amounts Paid | $1,011,111 |
| Other Expenses | $895,220 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Grants to Domestic Orgs | $1,011,111 | - | - | $1,011,111 |
| Other Salaries and Wages | $552,309 | $303,431 | - | $855,740 |
| Information Technology | $231,670 | $38,065 | - | $269,735 |
| Depreciation Depletion | $141,337 | $62,654 | - | $203,991 |
| Fees for Services Legal | - | $138,465 | - | $138,465 |
| Current Officers, Directors, Trustees, and Key Employees | $96,420 | $35,288 | - | $131,708 |
| Fees for Services Other | $131,522 | $23 | - | $131,545 |
| Other Employee Benefits | $41,160 | $68,406 | - | $109,566 |
| Payroll Taxes | $54,670 | $24,235 | - | $78,905 |
| Pension Plan Contributions | $35,648 | $18,659 | - | $54,307 |
| Occupancy | $34,763 | $15,410 | - | $50,173 |
| Fees for Services Accounting | - | $37,160 | - | $37,160 |
| Office Expenses | $24,150 | $11,950 | - | $36,100 |
| Travel | $11,298 | $5,008 | - | $16,306 |
| Insurance | $4,962 | $2,200 | - | $7,162 |
| Advertising | $3,798 | - | - | $3,798 |
| Conferences and Meetings | - | $785 | - | $785 |
| Total Functional Expenses | $2,374,818 | $761,739 | $0 | $3,136,557 |
| Line Item | Amount |
|---|---|
| Expenses per Audited Statements | $3,136,557 |
| Total Expenses per Audited Statements | $3,136,557 |
| Total Expenses per Form 990 | $3,136,557 |
| Recipient | Location | Category | Purpose | Amount |
|---|---|---|---|---|
| Goldman Sachs Philanthropy Fund | Albany, NY | 501(c)(3) | sustainability/climate | $861,111 |
| Carnegie Endowment for International Peace | Washington, DC | 501(c)(3) | sustainability/climate | $150,000 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $0 |
| Fundraising Gross Income | $0 |
| Gaming Direct Expenses | $0 |
| Gaming Gross Income | $0 |
| Professional Fundraising Fees | $0 |
| Interested Party | Relationship | Description | Shared Revenue | Amount |
|---|---|---|---|---|
| Anthro Digital LLC | Vendor | Rent and Utilities | No | $28,497 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Loans from Officers, Directors, Trustees, and Key Employees | $0 | $0 | → $0 |
| Receivables from Disqualified Persons | $0 | $0 | → $0 |
| Receivables from Officers, Directors, Trustees, and Key Employees | $0 | $0 | → $0 |
| Liability | Amount |
|---|---|
| Recoverable Grant | $1,500,000 |
“Comparable salaries of other related non-profits were compiled and voted on by the board of directors without the executive director's vote.”
“A draft of form 990 is sent to the board of directors for review and approval.”
“FORM 990 WILL BE AVAILABLE ONLINE AT WWW.GUIDESTAR.ORG AND WWW.ag.ny.gov. ALL DOCUMENTS ARE AVAILABLE UPON REQUEST.”
“Sale of the Subsidiary and certain of the Organization's Assets On February 29, 2024, 1st Street Foundation, Inc. (the "Foundation"), the sole member of Risk Factor, LLC (the "Subsidiary"), entered into a merger agreement with First Street Technology, Inc. (the "Buyer"), resulting in the acquisition of the Subsidiary. The transaction was executed through a merger of the Subsidiary with Risk Factor Merger Sub, LLC, a wholly owned subsidiary of the Buyer, with the Subsidiary surviving as a wholly owned subsidiary of the Buyer. Immediately prior to the merger, the Foundation contributed and transferred certain assets to the Subsidiary in accordance with a Contribution Agreement.”
“The board of directors oversights the audit.”
“1st street foundation inc believes that it has appropriate support for any tax positions taken, and as such, does not have any uncertain tax positions.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 290388 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 0 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 119044 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 70417 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | to Make climate risk accessible, easy to understand and actionable for individuals, governments, and industry. |
| IRS990/AddressChangeInd | 0 | X |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 3798 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 3798 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | HELENA CRAWLEY |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6464528848 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 215 PLYMOUTH STREET 3RD FLOOR |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | BROOKLYN |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 11201 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | true |
| IRS990/BusinessRlnWithFamMemInd | 0 | true |
| IRS990/BusinessRlnWithOrgMemInd | 0 | true |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 581121 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 10161948 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 35288 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 96420 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 131708 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 785 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 785 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | true |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 103166 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 132801 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 2529 YOLANDA CT |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | PO Box 742335 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | PLEASANTON |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | LOS ANGELES |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | CA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 94566 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 900742335 |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 0 | SPATIAL INFORMATICS GROUP |
| IRS990/ContractorCompensationGrp/ContractorName/PersonNm | 1 | Morrison Foerster |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | SOFTWARE ENGINEERING |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | Legal Services |
| IRS990/CostOfGoodsSoldAmt | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 0 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 1011111 |
| IRS990/CYInvestmentIncomeAmt | 0 | 16781400 |
| IRS990/CYOtherExpensesAmt | 0 | 895220 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 2682608 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 16327451 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1230226 |
| IRS990/CYTotalExpensesAmt | 0 | 3136557 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 19464008 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 1674975 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 62654 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 141337 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 203991 |
| IRS990/Desc | 0 | In early 2024, the Foundation continued its model enhancements, partnered with numerous new businesses and government agencies, and increased its reach to everyday Americans. On February 29, 2024, the Foundation, sold its subsidiary, Risk Factor, LLC, which was subsequently renamed First Street Technology, Inc. Immediately prior to the sale, the Foundation contributed and transferred its models, intellectual property and other assets to Risk Factor. In exchange for the sale, the Foundation received cash and stock in First Street Technology, Inc. On July 23, 2024, the Foundation divested some of its ownership in the First Street Technology, Inc. in exchange for cash. The Foundation made grants to charitable organizations aligned with its mission to make climate risk accessible, easy to understand and actionable for individuals, governments, and industry. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | true |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 30 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/EscrowAccountLiabilityGrp/BOYAmt | 0 | 0 |
| IRS990/EscrowAccountLiabilityGrp/EOYAmt | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 2374818 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 37160 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 37160 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 138465 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 138465 |
| IRS990/FeesForServicesLobbyingGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 23 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 131522 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 131545 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 0 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 60.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 60.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.0 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 6050 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 3061 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | EDWARD J KEARNS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | MATTHEW EBY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | PHILLIP LUNDIE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | KEITH PARDY |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 71609 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 50988 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | CHIEF DATA OFFICER (Thru 2/24) |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRES. & EXE. DIR. (Thru 2/24) |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR/CHAIR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 2016 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/ConsolidatedBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/FundraisingDirectExpensesAmt | 0 | 0 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 0 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 16467231 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GamingDirectExpensesAmt | 0 | 0 |
| IRS990/GamingGrossIncomeAmt | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 2 |
| IRS990/GrantAmt | 0 | 1011111 |
| IRS990/GrantsPayableGrp/BOYAmt | 0 | 0 |
| IRS990/GrantsPayableGrp/EOYAmt | 0 | 0 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 1011111 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 1011111 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | true |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 18500000 |
| IRS990/GrossReceiptsAmt | 0 | 21496777 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 0 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | true |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 2 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InfoInScheduleOPartXInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 38065 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 231670 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 269735 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 2200 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 4962 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 7162 |
| IRS990/IntangibleAssetsGrp/BOYAmt | 0 | 0 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/InterestGrp/TotalAmt | 0 | 0 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 0 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 314169 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 314169 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 6798474 |
| IRS990/InvestmentsProgramRelatedGrp/BOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 9 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 1746986 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 0 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | DC |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 2032769 |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LoansFromOfficersDirectorsGrp/BOYAmt | 0 | 0 |
| IRS990/LoansFromOfficersDirectorsGrp/EOYAmt | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | FIRST STREET FOUNDATION'S MISSION IS TO MAKE CLIMATE RISK ACCESSIBLE, EASY TO UNDERSTAND AND ACTIONABLE FOR INDIVIDUALS, GOVERNMENTS, AND INDUSTRY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | -796612 |
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| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 25387162 |
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| IRS990ScheduleD/FederalIncomeTaxLiabilityAmt | 0 | 0 |
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| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | RECOVERABLE GRANT |
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| IRS990ScheduleD/OtherSecuritiesGrp/Desc | 0 | 1ST STREET TECHNOLOGIES |
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| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | 1ST STREET FOUNDATION INC BELIEVES THAT IT HAS APPROPRIATE SUPPORT FOR ANY TAX POSITIONS TAKEN, AND AS SUCH, DOES NOT HAVE ANY UNCERTAIN TAX POSITIONS. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
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| IRS990ScheduleI/RecipientTable/PurposeOfGrantTxt | 1 | sustainability/climate |
| IRS990ScheduleI/RecipientTable/RecipientBusinessName/BusinessNameLine1Txt | 0 | Goldman Sachs Philanthropy Fund |
| IRS990ScheduleI/RecipientTable/RecipientBusinessName/BusinessNameLine1Txt | 1 | Carnegie Endowment for International Peace |
| IRS990ScheduleI/RecipientTable/RecipientEIN | 0 | 113813663 |
| IRS990ScheduleI/RecipientTable/RecipientEIN | 1 | 130552040 |
| IRS990ScheduleI/RecipientTable/USAddress/AddressLine1Txt | 0 | PO Box 15203 |
| IRS990ScheduleI/RecipientTable/USAddress/AddressLine1Txt | 1 | 1779 Massachusetts Avenue NW |
| IRS990ScheduleI/RecipientTable/USAddress/CityNm | 0 | Albany |
| IRS990ScheduleI/RecipientTable/USAddress/CityNm | 1 | Washington |
| IRS990ScheduleI/RecipientTable/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990ScheduleI/RecipientTable/USAddress/StateAbbreviationCd | 1 | DC |
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| IRS990ScheduleI/RecipientTable/USAddress/ZIPCd | 1 | 20036 |
| IRS990ScheduleI/RecipientTable/ValuationMethodUsedDesc | 0 | BOOK |
| IRS990ScheduleI/RecipientTable/ValuationMethodUsedDesc | 1 | BOOK |
| IRS990ScheduleI/SupplementalInformationDetail/ExplanationTxt | 0 | The Foundation made grants to charitable organizations aligned with its mission to make climate risk accessible, easy to understand and actionable for individuals, governments, and industry. The organization requests periodic reports from grant recipients. |
| IRS990ScheduleI/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART I DESCRIPTION OF PROCEDURE FOR MONITORING USE OF FUNDS |
| IRS990ScheduleI/Total501c3OrgCnt | 0 | 2 |
| IRS990ScheduleI/TotalOtherOrgCnt | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/NameOfInterested/PersonNm | 0 | ANTHRO DIGITAL LLC |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/RelationshipDescriptionTxt | 0 | VENDOR |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/SharingOfRevenuesInd | 0 | false |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionAmt | 0 | 28497 |
| IRS990ScheduleL/BusTrInvolveInterestedPrsnGrp/TransactionDesc | 0 | RENT AND UTILITIES |
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