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WIKIMEDIA FOUNDATION ORG

EIN 20-0049703 SAN FRANCISCO, CA

Revenue 2024
$205,389,744
Expenses 2024
$189,748,442

Program services were 77.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
B60
Classification
2100
Street
1 SANSOME ST STE 1895

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • DARIUSZ JEMIELNIAK

    TRUSTEE (THRU 01/25)

    Total calculated
    $0
    Hours/week
    4

  • ESRA'A AL SHAFEI

    TRUSTEE

    Total calculated
    $0
    Hours/week
    4

  • JIMMY WALES

    TRUSTEE (FOUNDER)

    Total calculated
    $0
    Hours/week
    4

  • LORENZO LOSA

    TRUSTEE; COMMITTEE CHAIR

    Total calculated
    $0
    Hours/week
    6

  • LUIS BITENCOURT-EMILIO

    TRUSTEE

    Total calculated
    $0
    Hours/week
    4

  • NATALIIA TYMKIV

    CHAIR

    Total calculated
    $0
    Hours/week
    8

  • RAJU NARISETTI

    TRUSTEE; COMMITTEE CHAIR

    Total calculated
    $0
    Hours/week
    5

  • ROSIE STEPHENSON-GOODKNIGHT

    TRUSTEE (THRU 12/2024)

    Total calculated
    $0
    Hours/week
    4

  • SHANI EVENSTEIN SIGALOV

    TRUSTEE; COMMITTEE CHAIR

    Total calculated
    $0
    Hours/week
    5

  • CHRISTEL STEIGENBERGER

    TRUSTEE (BEG 12/2024)

    Total calculated
    $0
    Hours/week
    4

  • VICTORIA DORONINA

    TRUSTEE

    Total calculated
    $0
    Hours/week
    4

  • MIKE PEEL

    TRUSTEE

    Total calculated
    $0
    Hours/week
    4

  • MACIEJ NADZIKIEWICZ

    TRUSTEE (BEG 12/2024)

    Total calculated
    $0
    Hours/week
    4

  • KATHY COLLINS

    TRUSTEE; COMMITTEE CHAIR

    Total calculated
    $0
    Hours/week
    6

  • JAIME VILLAGOMEZ

    CFO & TREASURER

    Total calculated
    $456,256
    From this org
    $416,641
    From related orgs
    $0
    Other
    $39,615
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $408,761
    Bonus
    $0
    Other
    $7,880
    Deferred
    $7,423
    Nontaxable benefits
    $32,192
    Filer's total
    $456,256

  • MARYANA ISKANDER

    CHIEF EXECUTIVE OFFICER

    Total calculated
    $553,360
    From this org
    $530,923
    From related orgs
    $0
    Other
    $22,437
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $528,313
    Bonus
    $0
    Other
    $2,610
    Deferred
    $13,800
    Nontaxable benefits
    $8,637
    Filer's total
    $553,360

  • STEPHEN LAPORTE

    GEN COUNSEL & SECRETARY

    Total calculated
    $402,658
    From this org
    $376,705
    From related orgs
    $0
    Other
    $25,953
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $374,419
    Bonus
    $0
    Other
    $2,286
    Deferred
    $7,290
    Nontaxable benefits
    $18,663
    Filer's total
    $402,658

  • LISA SEITZ

    CHIEF ADV OFFICER

    Total calculated
    $463,076
    From this org
    $410,807
    From related orgs
    $0
    Other
    $52,269
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $407,765
    Bonus
    $0
    Other
    $3,042
    Deferred
    $13,800
    Nontaxable benefits
    $38,469
    Filer's total
    $463,076

  • COURTNEY BASS SHERIZEN

    CHIEF PEOPLE OFFICER

    Total calculated
    $438,283
    From this org
    $401,190
    From related orgs
    $0
    Other
    $37,093
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $398,850
    Bonus
    $0
    Other
    $2,340
    Deferred
    $7,419
    Nontaxable benefits
    $29,674
    Filer's total
    $438,283

  • SELENA DECKELMANN

    CHIEF PROD & TECH OFFICER

    Total calculated
    $517,425
    From this org
    $475,965
    From related orgs
    $0
    Other
    $41,460
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $473,355
    Bonus
    $0
    Other
    $2,610
    Deferred
    $11,786
    Nontaxable benefits
    $29,674
    Filer's total
    $517,425

  • ANUSHA ALIKHAN

    CHIEF COMMUNICATIONS OFFICER

    Total calculated
    $359,477
    From this org
    $351,306
    From related orgs
    $0
    Other
    $8,171
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $348,696
    Bonus
    $0
    Other
    $2,610
    Deferred
    $5,781
    Nontaxable benefits
    $2,390
    Filer's total
    $359,477

  • AERYN PALMER

    DEPUTY GENERAL COUNSEL

    Total calculated
    $327,870
    From this org
    $305,352
    From related orgs
    $0
    Other
    $22,518
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $303,012
    Bonus
    $0
    Other
    $2,340
    Deferred
    $11,679
    Nontaxable benefits
    $10,839
    Filer's total
    $327,870

  • OLJA DIMITRIJEVIC THRU 0525

    DIRECTOR, DATA PLATFORM ENGINEERING (THRU 05/25)

    Total calculated
    $328,055
    From this org
    $291,674
    From related orgs
    $0
    Other
    $36,381
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $288,632
    Bonus
    $0
    Other
    $3,042
    Deferred
    $11,827
    Nontaxable benefits
    $24,554
    Filer's total
    $328,055

  • TAJH TAYLOR

    VP OF DATA SCIENCE & ENGINEERING

    Total calculated
    $378,717
    From this org
    $341,090
    From related orgs
    $0
    Other
    $37,627
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $338,048
    Bonus
    $0
    Other
    $3,042
    Deferred
    $7,953
    Nontaxable benefits
    $29,674
    Filer's total
    $378,717

  • REBECCA MACKINNON

    VP OF GLOBAL ADVOCACY

    Total calculated
    $334,290
    From this org
    $299,582
    From related orgs
    $0
    Other
    $34,708
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $295,460
    Bonus
    $0
    Other
    $4,122
    Deferred
    $10,240
    Nontaxable benefits
    $24,468
    Filer's total
    $334,290

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $205,389,744
    Expenses
    $189,748,442
    Contributions
    $187,573,816
    Grants paid
    $29,021,576
  • 2023
    Revenue
    $185,418,243
    Expenses
    $178,588,294
    Contributions
    $174,507,977
    Grants paid
    $27,006,803
  • 2022
    Revenue
    $180,199,672
    Expenses
    $168,305,333
    Contributions
    $173,394,921
    Grants paid
    $24,707,665

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2023 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

Nonprofiteer parses the Form 990 only. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

Grants made

  • WIKIMEDIA ENDOWMENT

    $1,490,207

    2024 BOARD-APPROVED REMIT OF PLANNED GIFTS TO THE WIKIMEDIA ENDOWMENT

  • TIDES FOUNDATION

    $1,487,648

    2022 TO SUPPORT WORK TO FURTHER MISSION.

  • WIKIMEDIA ENDOWMENT

    $866,498

    2023 BOARD-APPROVED REMIT OF PLANNED GIFTS TO THE WIKIMEDIA ENDOWMENT

  • WIKI EDUCATION FOUNDATION

    $581,753

    2022 TO SUPPORT WORK TO FURTHER MISSION.

  • WIKI EDUCATION FOUNDATION

    $500,000

    2024 MULTI-YEAR GRANT FOR SUPPORT OF THE WIKI EDUCATION FOUNDATION ANNUAL PLAN FOR THE 2024-2026 PERIOD

  • WIKI EDUCATION FOUNDATION

    $445,000

    2023 MULTI-YEAR GRANT FOR SUPPORT OF THE WIKI EDUCATION FOUNDATION ANNUAL PLAN FOR THE 20242026 PERIOD

  • ARTFEMINISM INC

    $404,689

    2024 MULTI-YEAR GRANT FOR SUPPORT OF THE ART+FEMINISM ANNUAL PLAN FOR THE 2023-2025 PERIOD

  • ARTFEMINISM INC

    $404,689

    2023 MULTI-YEAR GRANT FOR SUPPORT OF THE ART+FEMINISM ANNUAL PLAN FOR THE 2023-2025 PERIOD

  • ARTFEMINISM INC

    $381,685

    2022 TO SUPPORT WORK TO FURTHER MISSION.

  • WIKIMEDIA NEW YORK CITY

    $305,340

    2024 MULTI-YEAR GRANT FOR SUPPORT OF THE WIKIMEDIA NEW YORK CITY ANNUAL PLAN FOR THE 2025-2028 PERIOD; GRANT FOR WIKICONFERENCE NORTH AMERICA 2025

The 10 largest by cash amount. The API serves every itemized grant.

Where these grants went next →

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 10 September 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.