Civic Intelligence

Institute for Governance and Sustainable

EIN 81-0616238 • 501(c)3 • Washington, DC

Profile

Igsd's mission is to promote fast climate mitigation to slow near-term warming and self-propagating climate feedbacks, avoid or at least delay catastrophic climate and societal tipping points, and limit global temperatures to 1.5 cor at least keep this temperature guardrail in sight and limit overshoot.

5800 Macarthur Blvd NWWashington, DC 20016-2512

www.igsd.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

35th percentile

0.07x

Higher debt load relative to assets than 35% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2025

Liabilities / Revenue

30th percentile

0.09x

Higher debt load relative to revenue than 30% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2025

Net Margin

80th percentile

29%

Higher net margin than 80% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2025

Top Officer Pay

81st percentile

$330,241

Higher top officer pay than 81% of similar nonprofits.

Top officer pay equals 2.5% of source-year revenue.

501(c)3 • $10M-$25M nonprofits • Source year 2025

Asset Growth

88th percentile

30%

Faster asset growth than 88% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2024 to 2025

Revenue Growth

49th percentile

6.9%

Faster revenue growth than 49% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets35th percentile

Assets

Up

$15,668,160

Up $3,654,212 (+30%) from 2024

Liabilities

Down

$1,160,734

Down $74,065 (-6.0%) from 2024

Net Assets

Up

$14,507,426

Up $3,728,277 (+35%) from 2024

Operations
Liabilities / Revenue30th percentileNet Margin80th percentile

Revenue

Up

$13,022,902

Up $838,075 (+6.9%) from 2024

Expenses

Up

$9,294,625

Up $817,994 (+9.6%) from 2024

Net Income

Up

$3,728,277

Up $20,081 (+0.5%) from 2024

Trend Graphs

Balance Sheet Trend

Asset Growth88th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$20M$15M$10M$5.0M$0Assets 2011: $1,298,912Liabilities 2011: $312,164Net Assets 2011: $986,7482011Assets 2012: $1,054,241Liabilities 2012: $62,536Net Assets 2012: $991,7052012Assets 2013: $1,311,390Liabilities 2013: $148,210Net Assets 2013: $1,163,1802013Assets 2014: $1,310,255Liabilities 2014: $150,031Net Assets 2014: $1,160,2242014Assets 2015: $2,244,818Liabilities 2015: $1,076,602Net Assets 2015: $1,168,2162015Assets 2016: $1,490,576Liabilities 2016: $147,609Net Assets 2016: $1,342,9672016Assets 2017: $2,955,366Liabilities 2017: $1,278,095Net Assets 2017: $1,677,2712017Assets 2018: $3,432,497Liabilities 2018: $658,167Net Assets 2018: $2,774,3302018Assets 2019: $5,121,470Liabilities 2019: $464,120Net Assets 2019: $4,657,3502019Assets 2020: $7,779,701Liabilities 2020: $309,556Net Assets 2020: $7,470,1452020Assets 2021: $3,406,420Liabilities 2021: $350,877Net Assets 2021: $3,055,5432021Assets 2022: $5,047,571Liabilities 2022: $2,483,132Net Assets 2022: $2,564,4392022Assets 2023: $8,189,235Liabilities 2023: $1,118,282Net Assets 2023: $7,070,9532023Assets 2024: $12,013,948Liabilities 2024: $1,234,799Net Assets 2024: $10,779,1492024Assets 2025: $15,668,160Liabilities 2025: $1,160,734Net Assets 2025: $14,507,4262025

Highlighted filing

2025

Assets$15,668,160
Liabilities$1,160,734
Net Assets$14,507,426
Open 2025 Filing

Operations Trend

Revenue Growth49th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$15M$10M$5.0M$0-$5.0MRevenue 2011: $2,991,978Expenses 2011: $2,908,540Net Income 2011: $83,4382011Revenue 2012: $3,241,902Expenses 2012: $3,236,945Net Income 2012: $4,9572012Revenue 2013: $3,504,238Expenses 2013: $3,332,763Net Income 2013: $171,4752013Revenue 2014: $2,666,372Expenses 2014: $2,669,328Net Income 2014: -$2,9562014Revenue 2015: $3,139,087Expenses 2015: $3,131,095Net Income 2015: $7,9922015Revenue 2016: $3,922,156Expenses 2016: $3,747,405Net Income 2016: $174,7512016Revenue 2017: $7,370,688Expenses 2017: $7,036,384Net Income 2017: $334,3042017Revenue 2018: $9,982,357Expenses 2018: $8,885,298Net Income 2018: $1,097,0592018Revenue 2019: $11,229,339Expenses 2019: $9,346,319Net Income 2019: $1,883,0202019Revenue 2020: $11,311,091Expenses 2020: $8,498,296Net Income 2020: $2,812,7952020Revenue 2021: $7,176,788Expenses 2021: $11,591,081Net Income 2021: -$4,414,2932021Revenue 2022: $6,894,670Expenses 2022: $7,385,774Net Income 2022: -$491,1042022Revenue 2023: $12,604,816Expenses 2023: $8,098,302Net Income 2023: $4,506,5142023Revenue 2024: $12,184,827Expenses 2024: $8,476,631Net Income 2024: $3,708,1962024Revenue 2025: $13,022,902Expenses 2025: $9,294,625Net Income 2025: $3,728,2772025

Highlighted filing

2025

Revenue$13,022,902
Expenses$9,294,625
Net Income$3,728,277
Open 2025 Filing

Filings

Most recent year

2025 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$15,668,160
Liabilities
$1,160,734
Net assets
$14,507,426
Revenue
$13,022,902
Expenses
$9,294,625
Net income
$3,728,277
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$15.7$1.16$14.5$13.0$9.29$3.73
2024Detailed filing. Detailed filing data is available for this year.$12.0$1.23$10.8$12.2$8.48$3.71
2023Detailed filing. Detailed filing data is available for this year.$8.19$1.12$7.07$12.6$8.10$4.51
2022Detailed filing. Detailed filing data is available for this year.$5.05$2.48$2.56$6.89$7.39$0.49
2021Detailed filing. Detailed filing data is available for this year.$3.41$0.35$3.06$7.18$11.6$4.41
2020Detailed filing. Detailed filing data is available for this year.$7.78$0.31$7.47$11.3$8.50$2.81
2019Detailed filing. Detailed filing data is available for this year.$5.12$0.46$4.66$11.2$9.35$1.88
2018Detailed filing. Detailed filing data is available for this year.$3.43$0.66$2.77$9.98$8.89$1.10
2017Detailed filing. Detailed filing data is available for this year.$2.96$1.28$1.68$7.37$7.04$0.33
2016Detailed filing. Detailed filing data is available for this year.$1.49$0.15$1.34$3.92$3.75$0.17
2015Detailed filing. Detailed filing data is available for this year.$2.24$1.08$1.17$3.14$3.13$0.01
2014Summary only. Only limited summary data is available for this year.$1.31$0.15$1.16$2.67$2.67$0.00
2013Summary only. Only limited summary data is available for this year.$1.31$0.15$1.16$3.50$3.33$0.17
2012Summary only. Only limited summary data is available for this year.$1.05$0.06$0.99$3.24$3.24$0.00
2011Summary only. Only limited summary data is available for this year.$1.30$0.31$0.99$2.99$2.91$0.08
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jul 1, 2024 to Jun 30, 2025
Signed
Mar 6, 2026
Return Version
2024v5.5
Gross Receipts
$13,022,902
Mission and Program Overview

Mission

Igsd's mission is to promote fast climate mitigation to slow near-term warming and self-propagating climate feedbacks, avoid or at least delay catastrophic climate and societal tipping points, and limit global temperatures to 1.5 cor at least keep this temperature guardrail in sight and limit overshoot.

Balance Sheet Detail
LineBeginningEndChange
Assets
Cash and Non-Interest-Bearing Accounts$8,416,939$9,844,720▲ $1,427,781
Pledges and Grants Receivable$3,416,846$5,531,297▲ $2,114,451
Savings and Temporary Cash Investments$148,215$213,963▲ $65,748
Prepaid Expenses and Deferred Charges$31,948$78,180▲ $46,232
Land, Buildings, and Equipment, Net$0$0→ $0
Total Assets$12,013,948$15,668,160▲ $3,654,212
Other Assets Total$0$0→ $0
Liabilities
Accounts Payable and Accrued Expenses$1,234,799$1,160,734▼ $74,065
Total Liabilities$1,234,799$1,160,734▼ $74,065
Net Assets / Fund Balance
Net Assets With Donor Restrictions$6,310,565$9,613,608▲ $3,303,043
Net Assets Without Donor Restrictions$4,468,584$4,893,818▲ $425,234
Total Net Assets Fund Balance$10,779,149$14,507,426▲ $3,728,277
Total Liabilities and Net Assets / Fund Balance$12,013,948$15,668,160▲ $3,654,212

Asset Categories

AssetBook ValueDepreciationBasis
Equipment$0$5,854$5,854
Compensation and Service Providers
Top Officer Pay81st percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
Durwood ZaelkePresidentFT$300,000$30,241$330,241
Romina PicolottiSenior Policy AdvisorFT$253,333$70,253$323,586
Richard FerrisSenior CounselFT$241,667$27,324$268,991
Gabrielle DreyfusSenior ScientistFT$206,667$45,216$251,883
Zerin OshoDirector India ProgramFT$201,667$25,324$226,991
Melinda SofferDirector Finance & AdministrationFT$176,667$43,716$220,383
Xiaopu SunSenior China CounselFT$204,667$10,233$214,900

Board Members and Trustees

NameTitle
Oran YoungChair
Vance HughesVice Chair
Donald KaniaruBoard Member
Lewis GordonBoard Member
Sally Shelton-colbyBoard Member
Rachel BidermanSecretary

Highest Paid Contractors

ContractorServicesLocationCompensation
Gist Earth LLC Philip L DecolaIndia Science/economic Policy1924 PARK RD NW, Washington, DC 20010, Mo$250,000
Stephen AndersenScience/economic Policy195 BEVERLY COURT, Surry, VA 23883$223,333
Mohamed Rida DerderNorth Africa Policy Analyst702 COBB ST, Durham, NC 27707$190,833
Shindell Consulting LLCClimate Policy Analyst-$183,000
Revenue and Support

Revenue Composition

Contributions and Grants
$12,842,415
Program Service Revenue
$0
Investment Income
$180,487
Other Revenue
$0
All Other Contributions
$12,842,415
Change in Net Assets
$3,728,277

Audited Revenue Reconciliation

Revenue per Audited Statements
$13,022,902
Revenue Not Reported on Financial Statements
$0
Revenue Not Reported on Form 990
$0
Total Revenue per Audited Statements
$13,022,902
Total Revenue per Form 990
$13,022,902
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$5,141,721
Salaries, Compensation, and Employee Benefits$3,543,169
Grants and Similar Amounts Paid$609,735
Professional Fundraising Fees$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Fees for Services Other$3,837,621$27,988-$3,865,609
Other Salaries and Wages$2,111,814$175,661-$2,287,475
Travel$870,900--$870,900
Current Officers, Directors, Trustees, and Key Employees$305,815$254,775-$560,590
Other Employee Benefits$369,810$41,573-$411,383
Grants to Domestic Orgs$399,735--$399,735
Foreign Grants$210,000--$210,000
Conferences and Meetings$203,958--$203,958
Payroll Taxes$158,110$43,767-$201,877
Pension Plan Contributions-$81,844-$81,844
Office Expenses$20,356$60,095-$80,451
Fees for Services Accounting-$44,800-$44,800
Insurance-$35,710-$35,710
Fees for Services Legal-$8,122-$8,122
Other Expenses$692,017$-692,017-$0
Total Functional Expenses$9,210,922$83,703$0$9,294,625

Audited Expense Reconciliation

Line ItemAmount
Expenses per Audited Statements$9,294,625
Total Expenses per Audited Statements$9,294,625
Total Expenses per Form 990$9,294,625
Expenses Not Reported on Financial Statements$0
Expenses Not Reported on Form 990$0
International Activity

Grant and Assistance Recipients

RecipientLocationCategoryPurposeAmount
University of MarylandBaltimore, MD501(c)(3)STRATEGIC INTERNATIONAL COLLABORATION, RAISING THE BAR ON CHINA'S METHANE MITIGATION AMBITION$200,000
The Regents of the University of CaliforniaBerkeley, CA501(c)(3)Research on Energy Efficiency by Lawrence Berkely National Laboratory$199,735

International Summary

Offices
0
Employees
0
Spending
$210,000

International Compliance

Foreign grant records maintained
Yes
Activity in boycott countries
No
Foreign corporation ownership
No
Foreign partnership interest
No
Interest in foreign trust
No
Passive foreign investment company interest
No
Transfers to foreign corporations
No

International Activities

RegionActivityServicesOfficesEmployeesSpending
South AmericaGrants to Recipients-00$160,000
South AsiaGrants to Recipients-00$50,000
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
Yes
Subject to proxy tax
No
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
Audit committee
Yes
Backup withholding compliance
Yes
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
Yes
Other officer compensation reviewed
Yes
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Part VI, Section B, Line 11B

“The governing body was emailed a copy of the preliminary form 990 for review and approval prior to the filing of the final form 990.”

Form 990, Part VI, Section B, Line 12C

“Igsd maintains open communication between directors and employees; furthermore, officers, directors, and key employees are made aware of new business relationships as they are contracted. When potential conflicts are discovered, top management assess the situation. If a conflict exists, the person with the conflict is prohibited from participating in the governing body's deliberations and decisions in the transaction.”

Form 990, Part VI, Section B, Line 15

“The finance committee reviews the compensation of the igsd president utilizing comparable (washington, dc) industry data.”

Form 990, Part VI, Section C, Line 19

“The governing documents, conflict of interest policy, and financial statements are available to the public upon request.”

Filing and Contact Details

Filer

Filer Name
Institute for Governance and Sustainable
EIN
81-0616238
Phone
2023381300
Address
5800 MACARTHUR BLVD NW, WASHINGTON, DC 20016-2512

Signing Officer

Name
Durwood Zaelke
Title
President
Phone
2023381300
Signed
2026-03-06
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Durwood Zaelke
Formed
2003
Legal Domicile
Dc
Voting Board Members
7
Independent Board Members
6
Employees
22
Volunteers
6

Preparer

Firm
Councilor Buchanan & Mitchell Pc
Address
7910 WOODMONT AVE STE 500, BETHESDA, MD 20814
Preparer
Daniel L Weaver
Phone
3019860600
Supplemental Narrative

Additional Explanations

Form 990, Part IX, Line 11G

“Consultants: program service expenses 3,837,621. Management and general expenses 26,548. Fundraising expenses 0. Total expenses 3,864,169. Other services: program service expenses 0. Management and general expenses 1,440. Fundraising expenses 0. Total expenses 1,440.”

FORM 990, PART XII, LINE 2C:

“The audit committee assumes responsibility for oversight of the audit and selection of an independent accountant. This process has not changed from the prior year.”

Financial Statement Notes

PART X, LINE 2:

“The accounting standard on accounting for uncertainty in income taxes addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the financial statements. Under that guidance, igsd may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by taxing authorities based on the technical merits of the position. Examples of tax positions include igsd's tax-exempt status of and various positions related to the potential sources of unrelated business income tax (ubit). As of june 30, 2025 and 2024, igsd had no uncertain tax positions that qualified for either recognition as unrecognized tax benefits or disclosure in its financial statements.”

Raw XML AppendixShowing 400 of 681 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt40
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt50
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt60
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IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt843253
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt945216
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt1027324
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt1110233
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt1225324
IRS990/Form990PartVIISectionAGrp/PersonNm0DURWOOD ZAELKE
IRS990/Form990PartVIISectionAGrp/PersonNm1ORAN YOUNG
IRS990/Form990PartVIISectionAGrp/PersonNm2VANCE HUGHES
IRS990/Form990PartVIISectionAGrp/PersonNm3RACHEL BIDERMAN
IRS990/Form990PartVIISectionAGrp/PersonNm4DONALD KANIARU
IRS990/Form990PartVIISectionAGrp/PersonNm5SALLY SHELTON-COLBY
IRS990/Form990PartVIISectionAGrp/PersonNm6LEWIS GORDON
IRS990/Form990PartVIISectionAGrp/PersonNm7MELINDA SOFFER
IRS990/Form990PartVIISectionAGrp/PersonNm8ROMINA PICOLOTTI
IRS990/Form990PartVIISectionAGrp/PersonNm9GABRIELLE DREYFUS
IRS990/Form990PartVIISectionAGrp/PersonNm10RICHARD FERRIS
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IRS990/Form990PartVIISectionAGrp/PersonNm12ZERIN OSHO
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IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt8280333
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IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt00
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IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt120
IRS990/Form990PartVIISectionAGrp/TitleTxt0PRESIDENT
IRS990/Form990PartVIISectionAGrp/TitleTxt1CHAIR
IRS990/Form990PartVIISectionAGrp/TitleTxt2VICE CHAIR
IRS990/Form990PartVIISectionAGrp/TitleTxt3SECRETARY
IRS990/Form990PartVIISectionAGrp/TitleTxt4BOARD MEMBER
IRS990/Form990PartVIISectionAGrp/TitleTxt5BOARD MEMBER
IRS990/Form990PartVIISectionAGrp/TitleTxt6BOARD MEMBER
IRS990/Form990PartVIISectionAGrp/TitleTxt7DIRECTOR FINANCE & ADMINISTRATION
IRS990/Form990PartVIISectionAGrp/TitleTxt8SENIOR POLICY ADVISOR
IRS990/Form990PartVIISectionAGrp/TitleTxt9SENIOR SCIENTIST
IRS990/Form990PartVIISectionAGrp/TitleTxt10SENIOR COUNSEL
IRS990/Form990PartVIISectionAGrp/TitleTxt11SENIOR CHINA COUNSEL
IRS990/Form990PartVIISectionAGrp/TitleTxt12DIRECTOR INDIA PROGRAM
IRS990/Form990ProvidedToGvrnBodyInd01
IRS990/FormationYr02003
IRS990/FormerOfcrEmployeesListedInd00
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IRS990/FSAuditedInd01
IRS990/FundraisingActivitiesInd00
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IRS990/GoverningBodyVotingMembersCnt07
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IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt0399735
IRS990/GrantsToDomesticOrgsGrp/TotalAmt0399735
IRS990/GrantsToIndividualsInd00
IRS990/GrantsToOrganizationsInd01
IRS990/GrantToRelatedPersonInd00
IRS990/GrossReceiptsAmt013022902
IRS990/GroupReturnForAffiliatesInd00
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IRS990/InsuranceGrp/ManagementAndGeneralAmt035710
IRS990/InsuranceGrp/TotalAmt035710
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IRS990/MembersOrStockholdersInd00
IRS990/MethodOfAccountingAccrualInd0X
IRS990/MinutesOfCommitteesInd01
IRS990/MinutesOfGoverningBodyInd01
IRS990/MissionDesc0IGSD'S MISSION IS TO PROMOTE FAST CLIMATE MITIGATION TO SLOW NEAR-TERM WARMING AND SELF-PROPAGATING CLIMATE FEEDBACKS, AVOID OR AT LEAST DELAY CATASTROPHIC CLIMATE AND SOCIETAL TIPPING POINTS, AND LIMIT GLOBAL TEMPERATURES TO 1.5 COR AT LEAST KEEP THIS TEMPERATURE GUARDRAIL IN SIGHT AND LIMIT OVERSHOOT.
IRS990/MoreThan5000KToIndividualsInd00
IRS990/MoreThan5000KToOrgInd01
IRS990/NetAssetsOrFundBalancesBOYAmt010779149
IRS990/NetAssetsOrFundBalancesEOYAmt014507426
IRS990/NetUnrelatedBusTxblIncmAmt00
IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt04468584
IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt04893818
IRS990/NondeductibleContributionsInd00
IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt060095
IRS990/OfficeExpensesGrp/ProgramServicesAmt020356
IRS990/OfficeExpensesGrp/TotalAmt080451
IRS990/OfficerMailingAddressInd00
IRS990/OperateHospitalInd00
IRS990/Organization501c3Ind0X
IRS990/OrganizationFollowsFASB117Ind0X
IRS990/OtherAssetsTotalGrp/BOYAmt00
IRS990/OtherAssetsTotalGrp/EOYAmt00
IRS990/OtherChangesInNetAssetsAmt00
IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt041573
IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt0369810
IRS990/OtherEmployeeBenefitsGrp/TotalAmt0411383
IRS990/OtherExpensesGrp/Desc0PUBLICATIONS
IRS990/OtherExpensesGrp/Desc1MISCELLANEOUS
IRS990/OtherExpensesGrp/Desc2OVERHEAD
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt0306
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt11079
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt2-692017
IRS990/OtherExpensesGrp/ProgramServicesAmt030786
IRS990/OtherExpensesGrp/ProgramServicesAmt1692017
IRS990/OtherExpensesGrp/TotalAmt031092
IRS990/OtherExpensesGrp/TotalAmt11079
IRS990/OtherExpensesGrp/TotalAmt20
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IRS990/PartialLiquidationInd00
IRS990/PayPremiumsPrsnlBnftCntrctInd00
IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt043767
IRS990/PayrollTaxesGrp/ProgramServicesAmt0158110
IRS990/PayrollTaxesGrp/TotalAmt0201877
IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt081844
IRS990/PensionPlanContributionsGrp/TotalAmt081844
IRS990/PledgesAndGrantsReceivableGrp/BOYAmt03416846
IRS990/PledgesAndGrantsReceivableGrp/EOYAmt05531297
IRS990/PoliticalCampaignActyInd00
IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt031948
IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt078180
IRS990/PrincipalOfficerNm0DURWOOD ZAELKE
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IRS990/ProgSrvcAccomActy2Grp/Desc0INTERNATIONAL CLIMATE LITIGATIONTHE FAST-ACTION CLIMATE MITIGATION CAMPAIGN - TO PROMOTE NON-CO2 STRATEGIES THAT WILL RESULT IN SIGNIFICANT EMISSIONS REDUCTIONS IN THE NEAR TERM AS WELL AS TO COMPLEMENT CUTS IN CO2 WHICH ARE ESSENTIAL IN THE LONG-TERM.
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IRS990/ProgSrvcAccomActy2Grp/GrantAmt00
IRS990/ProgSrvcAccomActy2Grp/RevenueAmt00
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IRS990/PYExcessBenefitTransInd00
IRS990/PYGrantsAndSimilarPaidAmt0637000
IRS990/PYInvestmentIncomeAmt0179331
IRS990/PYOtherExpensesAmt04456190
IRS990/PYOtherRevenueAmt00
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IRS990/PYTotalExpensesAmt08476631
IRS990/PYTotalProfFndrsngExpnsAmt00
IRS990/PYTotalRevenueAmt012184827
IRS990/QuidProQuoContributionsInd00
IRS990/RcvFndsToPayPrsnlBnftCntrctInd00
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IRS990/ReportLandBuildingEquipmentInd01
IRS990/ReportOtherAssetsInd00
IRS990/ReportOtherLiabilitiesInd00
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IRS990/RevenueAmt00
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IRS990/SavingsAndTempCashInvstGrp/EOYAmt0213963
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt012842415
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt012005496
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt012598196
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt06894670
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt07176788
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IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt0180487
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt0179331
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt06620
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt00
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt00
IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt0366438
IRS990ScheduleA/PublicOrganization170Ind0X
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IRS990ScheduleA/PublicSupportPY170Pct00.52590
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IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt07176788
IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt051517565
IRS990ScheduleA/TotalSupportAmt051884003
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine10RESTRICTED
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IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED
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IRS990/ScheduleBRequiredInd01
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IRS990ScheduleC/AvgGrassrootsNontaxableGrp/CurrentYearMinus2Amt0138729
IRS990ScheduleC/AvgGrassrootsNontaxableGrp/CurrentYearMinus3Amt0129822
IRS990ScheduleC/AvgGrassrootsNontaxableGrp/TotalAmt0565692
IRS990ScheduleC/AvgLobbyingNontaxableAmountGrp/CurrentYearAmt0614731
IRS990ScheduleC/AvgLobbyingNontaxableAmountGrp/CurrentYearMinus1Amt0573832
IRS990ScheduleC/AvgLobbyingNontaxableAmountGrp/CurrentYearMinus2Amt0554915
IRS990ScheduleC/AvgLobbyingNontaxableAmountGrp/CurrentYearMinus3Amt0519289
IRS990ScheduleC/AvgLobbyingNontaxableAmountGrp/TotalAmt02262767
IRS990ScheduleC/GrassrootsCeilingAmt0848538
IRS990ScheduleC/GrassrootsNontaxableGrp/FilingOrganizationsTotalAmt0153683
IRS990ScheduleC/LobbyingCeilingAmt03394151
IRS990ScheduleC/LobbyingNontaxableAmountGrp/FilingOrganizationsTotalAmt0614731
IRS990ScheduleC/OtherExemptPurposeExpendGrp/FilingOrganizationsTotalAmt09294625
IRS990ScheduleC/TotalDirectLobbyingGrp/FilingOrganizationsTotalAmt00
IRS990ScheduleC/TotalExemptPurposeExpendGrp/FilingOrganizationsTotalAmt09294625
IRS990ScheduleC/TotalGrassrootsLobbyingGrp/FilingOrganizationsTotalAmt00
IRS990ScheduleC/TotalLobbyingExpendGrp/FilingOrganizationsTotalAmt00
IRS990ScheduleC/TotLbbyExpendMnsLbbyngNonTxGrp/FilingOrganizationsTotalAmt00
IRS990ScheduleC/TotLbbyngGrassrootMnsNonTxGrp/FilingOrganizationsTotalAmt00
IRS990ScheduleD/EquipmentGrp/BookValueAmt00
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IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt05854
IRS990ScheduleD/ExpensesNotReportedAmt00
IRS990ScheduleD/ExpensesNotRptFinclStmtAmt00
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IRS990ScheduleD/FootnoteTextInd0X
IRS990ScheduleD/RevenueNotReportedAmt00
IRS990ScheduleD/RevenueNotReportedFinclStmtAmt00
IRS990ScheduleD/RevenueSubtotalAmt013022902
IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt0THE ACCOUNTING STANDARD ON ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES ADDRESSES THE DETERMINATION OF WHETHER TAX BENEFITS CLAIMED OR EXPECTED TO BE CLAIMED ON A TAX RETURN SHOULD BE RECORDED IN THE FINANCIAL STATEMENTS. UNDER THAT GUIDANCE, IGSD MAY RECOGNIZE THE TAX BENEFIT FROM AN UNCERTAIN TAX POSITION ONLY IF IT IS MORE LIKELY THAN NOT THAT THE TAX POSITION WILL BE SUSTAINED ON EXAMINATION BY TAXING AUTHORITIES BASED ON THE TECHNICAL MERITS OF THE POSITION. EXAMPLES OF TAX POSITIONS INCLUDE IGSD'S TAX-EXEMPT STATUS OF AND VARIOUS POSITIONS RELATED TO THE POTENTIAL SOURCES OF UNRELATED BUSINESS INCOME TAX (UBIT). AS OF JUNE 30, 2025 AND 2024, IGSD HAD NO UNCERTAIN TAX POSITIONS THAT QUALIFIED FOR EITHER RECOGNITION AS UNRECOGNIZED TAX BENEFITS OR DISCLOSURE IN ITS FINANCIAL STATEMENTS.
IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc0PART X, LINE 2:
IRS990ScheduleD/TotalBookValueLandBuildingsAmt00
IRS990ScheduleD/TotalExpensesPerForm990Amt09294625
IRS990ScheduleD/TotalRevenuePerForm990Amt013022902
IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt013022902

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