STRATEGY STUDIO / PUBLIC DATA EXPLORER

WILMINGTON HISTORICAL SOCIETY

Cite this

Plain text WILMINGTON HISTORICAL SOCIETY. Strategy Studio, nonprofit organization profile, tax years 2025. https://strategystudio.org/org/330318784. Retrieved 2026-10-19.

APA Strategy Studio. (n.d.). WILMINGTON HISTORICAL SOCIETY [Nonprofit organization profile; tax years 2025]. Retrieved October 19, 2026, from https://strategystudio.org/org/330318784

MLA “WILMINGTON HISTORICAL SOCIETY.” Strategy Studio, tax years 2025, https://strategystudio.org/org/330318784. Accessed 19 Oct. 2026.

Retrieved 2026-10-19; covers tax years 2025. Data: Strategy Studio, CC BY 4.0.

2025 · Form 990EZ · revenue $70K · expenses $59K · assets $26K

EIN
33-0318784
Address
309 W OPP ST, WILMINGTON, CA 90744-3412
NTEE code
A80
Subsection
501(c)(3)
Ruling year
2019
Cross-check
ProPublica Nonprofit Explorer

Mission

We collect, archive, digitize, educate and make available to the public the local history of Wilmington California.

Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).

People paid by the organization

None of the 2 people listed on these returns reported compensation from the organization. They are listed below.

Officers and directors, no compensation reported

2 people listed on the returns with $0 (or no amount) in every compensation column: current people first. Hours are as filed on the latest return each person appears on.

NameLatest titleYearsHrs/wk (latest)CompensationOrganizations
Laura Mohberg Treasurer2025 30 $0 reported 1
Simie Seaman President2025 10 $0 reported 1

People by year

2025 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Laura Mohberg Treasurer30 $0-$0 $01
Simie Seaman President10 $0-$0 $01

Highest-paid independent contractors

No independent contractors reported.

Who gave

Contributor names are not public for this form type.

Public charities filing Form 990 or 990-EZ report large donors on Schedule B, but the IRS withholds their names and addresses from public copies. Private foundations (990-PF) are different: their contributors are public.

Finances

Newest first. Each filing: its name on one row, its figures on the row beneath. Greyed filings are superseded by a later return for the same period and are left out everywhere else on this page.

RevenueExpensesAssetsNet assetsContributionsProgram revenueOfficer payEmployeesVolunteers
2025 · Form 990EZ period ending 2026-03-31 · view filing · original 990 ↗
$70,447$59,021 $25,894$25,894 $70,132$0 ---

Funders of this organization

4 grantors reported grants to this organization, $22,648 in all, tax years 2020 to 2024. Exact: the grantor wrote this organization's EIN. Fuzzy: the grantor wrote only a name (foundations' 990-PF has no EIN field), matched to the same or a near-identical name in the same state; the name as filed is shown. From the latest return for each grantor and year, so amended returns aren't counted twice. CSV

GrantorTypeMatchYears givenGrantsTotalLatest yearLatest year's amountGrants
LOCAL INITIATIVES SUPPORT CORPORATION Public charity Exact 2020 1$15,000 2020$15,000
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Marathon Petroleum Foundation Inc Private foundation Fuzzy filed as “WILMINGTON HISTORICAL SOCIETY” 2021 1$5,000 2021$5,000
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BANC OF CALIFORNIA CHARITABLE FOUNDATION Private foundation Fuzzy filed as “Wilmington Historical Society” 2024 1$2,500 2024$2,500
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AMAZONSMILE FOUNDATION Private foundation Fuzzy filed as “WILMINGTON HISTORICAL SOCIETY” 2022-2023 2$148 2023$62
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Similar organizations

Ranked without any AI: same NTEE code first, then the same NTEE group; then revenue within 2x, 5x or 10x; then the same state; then similar name and mission text. Same state only · More (100)

OrganizationStateNTEELatest revenueLatest expensesTop-paid titleTop payWhy similar
DIXON HISTORICAL SOCIETYCAA80 $77,391$70,738 President$0 Same NTEE code A80, revenue within 2x, same state, similar name
ARTESIA HISTORICAL SOCIETYCAA80 $63,232$12,862 Treasurer$0 Same NTEE code A80, revenue within 2x, same state, similar name
ST HELENA HISTORICAL SOCIETYCAA80 $93,017$91,889 TREASURER$0 Same NTEE code A80, revenue within 2x, same state, similar name
TEMECULA VALLEY HISTORICAL SOCIETYCAA80 $92,595$82,286 PRESIDENT$0 Same NTEE code A80, revenue within 2x, same state, similar name
TURLOCK HISTORICAL SOCIETYCAA80 $75,298$39,147 President$0 Same NTEE code A80, revenue within 2x, same state, similar name
463RD BOMB GROUP HISTORICAL SOCIETYCAA80 $70,010$9,547 President$0 Same NTEE code A80, revenue within 2x, same state, similar name
THREE RIVERS HISTORICAL SOCIETYCAA80 $56,495$56,516 Director$0 Same NTEE code A80, revenue within 2x, same state, similar name
RANCHO BERNARDO HISTORICAL SOCIETYCAA80 $89,347$104,901 TREASURER$0 Same NTEE code A80, revenue within 2x, same state, similar name
CALIFORNIA HISTORICAL ARTILLERY SOCIETYCAA80 $55,906$66,019 President$0 Same NTEE code A80, revenue within 2x, same state
EIGHTH AIR FORCE HISTORICAL SOCIETY INCCAA80 $91,874$100,045 VICE PRESIDE$0 Same NTEE code A80, revenue within 2x, same state
HISTORICAL PRESERVATION FOUNDATION OF THE NATIVE SONS OF GOLDEN WESTCAA80 $67,670$37,616 Secretary$0 Same NTEE code A80, revenue within 2x, same state
MOTHER LODE MINERAL SOCIETYCAA80 $66,541$100,833 PRESIDENT$0 Same NTEE code A80, revenue within 2x, same state
HYPERION HISTORICAL ALLIANCECAA80 $82,985$56,294 President & CEO$0 Same NTEE code A80, revenue within 2x, same state
SAUSALITO WOMANS CLUB PRESERVATION SOCIETYCAA80 $53,316$57,012 Director$0 Same NTEE code A80, revenue within 2x, same state
MILLIKEN MUSEUM SOCIETYCAA80 $68,656$15,307 President$0 Same NTEE code A80, revenue within 2x, same state
NATIONAL SOCIETY OF THE DAUGHTERS OF THE AMERICAN REVOLUTIONCAA80 $57,377$49,934 TREASURER$0 Same NTEE code A80, revenue within 2x, same state
BLUE OX HISTORIC VILLAGE AND SCHOOLCAA80 $83,045$86,383 DIRECTOR$0 Same NTEE code A80, revenue within 2x, same state
ANTIQUE & CLASSIC BOAT SOCIETY NO CAL-LAKE TAHOE CHAPTERCAA80 $66,126$74,803 President$0 Same NTEE code A80, revenue within 2x, same state
LEGION SIX HISTORICAL FOUNDATION INCCAA80 $77,980$155,718 PRESIDENT$0 Same NTEE code A80, revenue within 2x, same state
SARATOGA FOOTHILL CLUB HISTORICAL LANDMARK FOUNDATIONCAA80 $85,228$45,932 Recording Secty$0 Same NTEE code A80, revenue within 2x, same state
VENICE CANALS ASSOCIATIONCAA80 $69,960$82,295 President and Director$0 Same NTEE code A80, revenue within 2x, same state
MISSION HILLS HERITAGECAA80 $57,970$64,979 President$0 Same NTEE code A80, revenue within 2x, same state
CARSON & COLORADO RAILWAY INCCAA80 $74,982$32,933 PRESIDENT$0 Same NTEE code A80, revenue within 2x, same state
CENTRAL VALLEY HOLOCAUST EDUCATORS NETWORKCAA80 $64,341$57,909 DIRECTOR$14,500 Same NTEE code A80, revenue within 2x, same state
CAMARILLO RANCH FOUNDATION INCCAA80 $81,758$58,310 President$0 Same NTEE code A80, revenue within 2x, same state

Who funds organizations like this

Grantors that funded the 100 most similar organizations. Ranked by total given to them. Foundations (990-PF) and donor-advised fund sponsors only. Same matching as Funders above (by EIN, or by name for foundations).

GrantorTypeTotal givenGrantsOrganizations fundedYearsWhich ones
STURGIS AREA COMMUNITY FOUNDATION DAF sponsor$2,477,59517 12013–2024 STURGIS HISTORICAL SOCIETY
FOUNDATION FOR THE CAROLINAS DAF sponsor$603,9408 12015–2024 LEGION SIX HISTORICAL FOUNDATION INC
DONOR ADVISED CHARITABLE GIVING DAF sponsor$465,05026 102016–2024 GHIBERTI FOUNDATION; HISTORICAL PRESERVATION FOUNDATION OF THE NATIVE SONS OF GOLDEN WEST; SARATOGA FOOTHILL CLUB HISTORICAL LANDMARK FOUNDATION; FRIENDS OF NO 9 INC and 6 more
AMERICAN ENDOWMENT FOUNDATION DAF sponsor$410,0004 22020–2023 SARATOGA FOOTHILL CLUB HISTORICAL LANDMARK FOUNDATION; OAKBROOK PARK CHUMASH INDIAN CORPORATION
MARIN COMMUNITY FOUNDATION DAF sponsor$387,2155 12013–2023 SAUSALITO WOMANS CLUB PRESERVATION SOCIETY
THE COMMUNITY FOUNDATION INC DAF sponsor$343,7278 12017–2024 KING WILLIAM COUNTY HISTORICAL SOCIETY
SANTA BARBARA FOUNDATION DAF sponsor$333,15025 12010–2017 SANTA BARBARA COURTHOUSE LEGACY FOUNDATION
SAN FRANCISCO FOUNDATION DAF sponsor$298,5606 22012–2022 URBAN PRESERVATION FOUNDATION; GHIBERTI FOUNDATION
COMMUNITY FOUNDATION OF SARASOTA COUNTY INC DAF sponsor$275,07415 12010–2024 JERSEY COUNTY HISTORICAL SOCIETY
EVA CRANE GOFF FOUNDATION Private foundation$255,90610 12016–2025 DANVILLE HISTORICAL SOCIETY
JEWISH COMMUNITY FEDERATION OF S F MARIN PENINSULA & SONOMA COUNTIES DAF sponsor$250,0002 12009–2010 GHIBERTI FOUNDATION
SKYLIGHT CHARITABLE TR Private foundation$200,0002 12022–2022 LEBANON HISTORICAL SOCIETY
HIND FOUNDATION Private foundation$170,0001 12014–2014 SANTA BARBARA COURTHOUSE LEGACY FOUNDATION
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$144,20013 82017–2024 BUCKLAND HISTORICAL SOCIETY INC; CALIFORNIA HISTORICAL ARTILLERY SOCIETY; FRIENDS OF NO 9 INC; GLENBROOK HISTORICAL SOCIETY INC and 4 more
VANGUARD CHARITABLE ENDOWMENT PROGRAM DAF sponsor$139,0003 22022–2023 BUCKLAND HISTORICAL SOCIETY INC; GLENBROOK HISTORICAL SOCIETY INC

The full list · all similar organizations

Where the money went

Every expense line on each return, biggest first: Form 990 Part IX (with its program, management and fundraising columns), 990-EZ Part I, or 990-PF Part I. Event marks lines the organization itself describes as events. “Events” in each summary adds those lines, conferences and meetings, and the direct costs of fundraising events. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.

2025 · Form 990EZ · $59,021 spent · pay $0 · grants $0 · events $0
LineAs describedTotalShare
Occupancy, rent, utilities, maintenance $37,601 63.7%
Other expenses (detail on Schedule O) $12,568 21.3%
Fees to independent contractors $8,835 15.0%
Printing, publications, postage $17 0.0%
Total$59,021100%

View the filing