Nonprofit · EIN 20-0049703
WIKIMEDIA FOUNDATION ORG
Tax-exempt · SAN FRANCISCO, CA 94104
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $205,389,744 | $189,748,442 | $15,641,302 | $310,794,417 | $14,244,387 | $296,550,030 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $187,573,816
- Program service revenue
- $0
- Investment income
- $7,194,577
- Royalties
- $8,267,917
- Net gain from sales of assets
- -$1,282,877
- Net income from sales of inventory
- $192,965
- Other revenue
- $10,621,351
Expenses
- Grants and similar amounts paid
- $29,021,576
- Compensation of officers, directors and key employees
- $5,238,266
- Other salaries and wages
- $84,050,713
- Salaries, compensation and benefits (total)
- $108,920,793
- Professional fundraising fees
- $343,373
- Legal fees
- $4,182,941
- Accounting fees
- $151,778
- Occupancy
- $133,414
- Travel
- $5,291,611
- Depreciation
- $4,592,768
- Program services (functional)
- $146,283,034
- Management and general (functional)
- $21,645,032
- Fundraising (functional)
- $21,820,376
Balance sheet and other
- Total assets, start of year
- $286,759,938
- Total assets, end of year
- $310,794,417
- Total liabilities, end of year
- $14,244,387
- Net assets, end of year
- $296,550,030
- Land, buildings and equipment
- $11,786,864
- Publicly traded securities
- $213,347,452
- Net assets without donor restrictions
- $292,735,030
- Net assets with donor restrictions
- $3,815,000
- Gross unrelated business income
- $222,965
- Gross receipts
- $286,704,286
- Employees
- 394
- Volunteers
- 265,188
- Year formed
- 2003
- State of legal domicile
- FL
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MARYANA ISKANDER | CHIEF EXECUTIVE OFFICER Officer | 40 | $530,923 | $22,437 |
| SELENA DECKELMANN | CHIEF PROD & TECH OFFICER Key employee | 40 | $475,965 | $41,460 |
| LISA SEITZ | CHIEF ADV OFFICER Key employee | 40 | $410,807 | $52,269 |
| JAIME VILLAGOMEZ | CFO & TREASURER Officer | 40 | $416,641 | $39,615 |
| COURTNEY BASS SHERIZEN | CHIEF PEOPLE OFFICER Key employee | 40 | $401,190 | $37,093 |
| STEPHEN LAPORTE | GEN COUNSEL & SECRETARY Officer | 40 | $376,705 | $25,953 |
| TAJH TAYLOR | VP OF DATA SCIENCE & ENGINEERING Highest-paid employee | 40 | $341,090 | $37,627 |
| ANUSHA ALIKHAN | CHIEF COMMUNICATIONS OFFICER Key employee | 40 | $351,306 | $8,171 |
| DHAVAL PATEL | PRINCIPAL INVESTMENT MANAGER Highest-paid employee | 40 | $296,642 | $46,452 |
| REBECCA MACKINNON | VP OF GLOBAL ADVOCACY Highest-paid employee | 40 | $299,582 | $34,708 |
| OLJA DIMITRIJEVIC THRU 0525 | DIRECTOR, DATA PLATFORM ENGINEERING (THRU 05/25) Highest-paid employee | 40 | $291,674 | $36,381 |
| AERYN PALMER | DEPUTY GENERAL COUNSEL Highest-paid employee | 40 | $305,352 | $22,518 |
| DARIUSZ JEMIELNIAK | TRUSTEE (THRU 01/25) Trustee or director | 4 | $0 | $0 |
| ESRA'A AL SHAFEI | TRUSTEE Trustee or director | 4 | $0 | $0 |
| JIMMY WALES | TRUSTEE (FOUNDER) Trustee or director | 4 | $0 | $0 |
11 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LORENZO LOSA | TRUSTEE; COMMITTEE CHAIR Trustee or director, Officer | 6 | $0 |
| LUIS BITENCOURT-EMILIO | TRUSTEE Trustee or director | 4 | $0 |
| NATALIIA TYMKIV | CHAIR Trustee or director, Officer | 8 | $0 |
| RAJU NARISETTI | TRUSTEE; COMMITTEE CHAIR Trustee or director, Officer | 5 | $0 |
| ROSIE STEPHENSON-GOODKNIGHT | TRUSTEE (THRU 12/2024) Trustee or director | 4 | $0 |
| SHANI EVENSTEIN SIGALOV | TRUSTEE; COMMITTEE CHAIR Trustee or director, Officer | 5 | $0 |
| CHRISTEL STEIGENBERGER | TRUSTEE (BEG 12/2024) Trustee or director | 4 | $0 |
| VICTORIA DORONINA | TRUSTEE Trustee or director | 4 | $0 |
| MIKE PEEL | TRUSTEE Trustee or director | 4 | $0 |
| MACIEJ NADZIKIEWICZ | TRUSTEE (BEG 12/2024) Trustee or director | 4 | $0 |
| KATHY COLLINS | TRUSTEE; COMMITTEE CHAIR Trustee or director, Officer | 6 | $0 |
Address and contacts
- Address (IRS master file)
- 1 SANSOME ST STE 1895, SAN FRANCISCO, CA 94104-4432
- In care of
- % JAIME VILLAGOMEZ
- Principal officer (990 for 2024)
- JAIME VILLAGOMEZ, 1 SANSOME STREET SUITE 1895, SAN FRANCISCO, CA 94104
- Signed the 990
- JAIME VILLAGOMEZ, CFO
- Phone
- (415) 839-6885
- Return prepared by
- KPMG LLP
Mission
THE MISSION OF THE WIKIMEDIA FOUNDATION IS TO EMPOWER AND ENGAGE PEOPLE AROUND THE WORLD TO COLLECT AND DEVELOP EDUCATIONAL CONTENT UNDER A FREE LICENSE OR IN THE PUBLIC DOMAIN, AND TO DISSEMINATE IT EFFECTIVELY AND GLOBALLY. (SEE SCHEDULE O)IN COORDINATION WITH A NETWORK OF INDIVIDUAL VOLUNTEERS AND OUR INDEPENDENT MOVEMENT ORGANIZATIONS, INCLUDING RECOGNIZED CHAPTERS, THEMATIC ORGANIZATIONS, USER GROUPS, AND PARTNERS, THE FOUNDATION PROVIDES THE ESSENTIAL INFRASTRUCTURE AND AN ORGANIZATIONAL FRAMEWORK FOR THE SUPPORT AND DEVELOPMENT OF MULTILINGUAL WIKI PROJECTS AND OTHER ENDEAVORS WHICH SERVE THIS MISSION. THE FOUNDATION WILL MAKE AND KEEP USEFUL INFORMATION FROM ITS PROJECTS AVAILABLE ON THE INTERNET FREE OF CHARGE.
Program accomplishments
- TECHNOLOGY: OUR CORE FUNCTIONS INCLUDE SUPPORT FOR THE TECHNOLOGY THAT MAKES WIKIPEDIA AND OTHER WIKIMEDIA PROJECTS POSSIBLE, WHICH TOGETHER IS ONE OF THE WORLD'S MOST POPULAR WEB PLATFORMS, AND THE WORLD'S LARGEST COLLABORATIVE FREE KNOWLEDGE PROJECT. THE WIKIMEDIA FOUNDATION PROVIDES THE SERVERS AND ELECTRICITY NEEDED TO KEEP THE WEBSITES RUNNING, ALONG WITH DEDICATED TECHNICAL RESOURCES TO BUILD, IMPROVE, AND MAINTAIN THE TECHNICAL INFRASTRUCTURE OF WIKIMEDIA PROJECTS. THESE ONGOING ENGINEERING EFFORTS AND PRODUCT IMPROVEMENTS REQUIRE RESEARCH AND DESIGN WORK, AS WELL AS LEGAL SUPPORT. ALL OF THIS ALLOWS FOR THE BEST EXPERIENCE FOR OUR READERS AND VOLUNTEER COMMUNITY, ENSURING USERS CONTINUE TO ACCESS, CONTRIBUTE TO AND GROW THE WORLD'S LARGEST ONLINE FREE KNOWLEDGE RESOURCE. (SEE SCHEDULE O)IN ADDITION TO OUR TWO MAIN DATA CENTERS AND FIVE CACHING DATA CENTERS, WE MAINTAIN THE SOFTWARE AND INFRASTRUCTURE ON WHICH WE OPERATE SOME OF THE WORLD'S MOST MULTILINGUAL SITES WITH OVER 1,000 SEPARATE WIKI INSTANCES AND OVER 3,800 COMMUNITY-CONTRIBUTED TOOLS, MANY OF WHICH ARE ESSENTIAL TO MAINTAINING THE CONTENT AND QUALITY OF WIKIPEDIA, AS WELL AS SEVEN MOBILE APPLICATIONS. WIKIPEDIA AND THE OTHER PROJECTS OPERATED BY THE WIKIMEDIA FOUNDATION RECEIVE MORE THAN 18 BILLION PAGEVIEWS PER MONTH. WIKIPEDIA IS AVAILABLE IN MORE THAN 342 LANGUAGES AND CONTAINS MORE THAN 65 MILLION ARTICLES CONTRIBUTED BY A GLOBAL VOLUNTEER COMMUNITY.Expenses $85,835,166
- SUPPORT FOR VOLUNTEERS: THE WIKIMEDIA FOUNDATION SUPPORT FOR VOLUNTEERS FOCUSES ON SUSTAINING AND GROWING THE WIKIMEDIA PROJECTS AND CONTRIBUTOR COMMUNITIES AROUND THE WORLD. GRANTMAKING PROVIDES FUNDING TO WIKIMEDIA AFFILIATE ORGANIZATIONS, AS WELL AS OTHER MISSION-ALIGNED ORGANIZATIONS AND INDIVIDUALS FOR PROGRAMMATIC WORK THAT ADVANCES WIKIMEDIA'S FREE KNOWLEDGE MISSION. OTHER ACTIVITIES INCLUDE PARTNERSHIPS TO POSITION WIKIMEDIA AS A KEY PLAYER IN THE FREE KNOWLEDGE ECOSYSTEM, TRUST AND SAFETY TO PROTECT ONLINE CONTRIBUTOR COMMUNITIES, LEGAL AND ADVOCACY TO RAISE AWARENESS ABOUT AND DEFEND THE WIKIMEDIA MODEL WORLDWIDE, AND COMMUNICATIONS TO BUILD TRUST AND AFFINITY WITH WIKIMEDIA'S GLOBAL AUDIENCES.Expenses $60,447,868 · grants $29,021,576
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 20-0049703
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2005
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Education (B60)
- Assets (IRS master file)
- $310,794,417
- Income (IRS master file)
- $286,704,286
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | – | – | – | IRS |
| 990-T | June 2025 | – | – | – | IRS |
| 990 | June 2024 | – | – | – | IRS |
| 990-T | June 2024 | – | – | – | IRS |
| 990 | June 2023 | $180,199,672 | $168,305,333 | $274,123,369 | IRS |
| 990-T | June 2023 | – | – | – | IRS |
| 990 | June 2022 | $167,911,116 | $145,835,404 | $250,965,442 | IRS |
| 990-T | June 2022 | – | – | – | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990-T | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | IRS |
| 990 | June 2018 | – | – | – | IRS |
990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS.
Questions about WIKIMEDIA FOUNDATION ORG
- What is the EIN of WIKIMEDIA FOUNDATION ORG?
- The employer identification number (EIN) of WIKIMEDIA FOUNDATION ORG is 20-0049703.
- Is WIKIMEDIA FOUNDATION ORG tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2005.
- Are donations to WIKIMEDIA FOUNDATION ORG tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does WIKIMEDIA FOUNDATION ORG file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of WIKIMEDIA FOUNDATION ORG due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did WIKIMEDIA FOUNDATION ORG last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of WIKIMEDIA FOUNDATION ORG?
- The 990 for the year ended June 30, 2025 names JAIME VILLAGOMEZ.
- Who are the officers and directors of WIKIMEDIA FOUNDATION ORG?
- The 990 for the year ended June 30, 2025 lists 26 people; 12 received compensation from the organization, the highest $530,923 (MARYANA ISKANDER, CHIEF EXECUTIVE OFFICER).
- How much revenue does WIKIMEDIA FOUNDATION ORG have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $205,389,744, expenses of $189,748,442 and total assets of $310,794,417 at year end.
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