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ST LOUIS SCIENCE CENTER FOUNDATION

EIN 43-1496632 SAINT LOUIS, MO

Revenue 2025
$10,815,081
Expenses 2025
$9,659,434

Program services were 76.7% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
U20
Classification
1000
Street
5050 OAKLAND AVE

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).

Other organizations at this address

1 other organization in the IRS Business Master File lists the same street address. matched by us

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

Mission and programs · 2025

Mission

SUPPORT THE ST. LOUIS SCIENCE CENTER AND ITS COMPREHENSIVE ARRAY OF EDUCATIONAL OUTREACH PROGRAMS TO THE COMMUNITY IN ORDER TO INCREASE INTEREST, UNDERSTANDING AND ENTHUSIASM FOR STEM (SCIENCE, TECHNOLOGY, ENGINEERING AND MATHEMATICS).

Activities or mission (Part I)

TO IGNITE AND SUSTAIN LIFELONG SCIENCE AND TECHNOLOGY LEARNING.

  • THE SAINT LOUIS SCIENCE CENTER FOUNDATION PROVIDES FACILITIES AND DIRECT FINANCIAL SUPPORT FOR THE OPERATIONS OF THE SAINT LOUIS SCIENCE CENTER. EACH YEAR, THE FOUNDATION SECURES CONTRIBUTED REVENUE TO SUPPORT THE SCIENCE CENTER'S MISSION TO INSPIRE EVERYONE TO BE CURIOUS AND ENGAGED IN SCIENCE. WELCOMING MORE THAN 640,000 GUESTS ANNUALLY, THE SCIENCE CENTER OFFERS DYNAMIC, ACCESSIBLE PROGRAMMING FOR LEARNERS OF ALL AGES INCLUDING HUNDREDS OF INTERACTIVE EXHIBITS, EARLY CHILDHOOD EDUCATION, TEEN INITIATIVES LIKE YOUTH EXPLORING SCIENCE, AND COMMUNITY OUTREACH PROGRAMS SUCH AS STL FOR ALL. SIGNATURE PROGRAMS LIKE SCIFEST, ESPORTS ENRICHMENT, AND SUMMERTIME SCIENCE CAMPS FOSTER HANDS-ON STEM LEARNING.CONTINUED ON SCHEDULE OANCHORED BY DESTINATIONS LIKE THE JAMES S. MCDONNELL PLANETARIUM AND THE OMNIMAX THEATER, THE SCIENCE CENTER SERVES AS A VITAL REGIONAL HUB FOR SCIENCE EDUCATION AND ENGAGEMENT.

    Expenses $7,405,448 · Grants $4,042,700 · Revenue $5,015,419

As filed on the 2025 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Ray Vandiver

    PRESIDENT / CEO (AS OF 2/25)

    Total calculated
    $373,441
    From this org
    $0
    From related orgs
    $348,260
    Other
    $25,181
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $341,619 related
    Bonus
    $0 + $6,641 related
    Other
    $0
    Deferred
    $0 + $12,857 related
    Nontaxable benefits
    $0 + $12,324 related
    Filer's total
    $0 + $373,441 related
  • Todd Bastean

    PRESIDENT / CEO (THRU 4/25)

    Total calculated
    $183,341
    From this org
    $0
    From related orgs
    $162,742
    Other
    $20,599
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $159,788 related
    Bonus
    $0 + $2,954 related
    Other
    $0
    Deferred
    $0 + $5,149 related
    Nontaxable benefits
    $0 + $15,450 related
    Filer's total
    $0 + $183,341 related
  • Mark Wrighton

    CHAIRMAN

    Total calculated
    $0
    Hours/week
    1 + 1 related
  • Mike Baughman

    TREASURER

    Total calculated
    $0
    Hours/week
    1 + 1 related
  • Kelvin Adams

    SECRETARY (AS OF 1/25)

    Total calculated
    $0
    Hours/week
    1 + 1 related
  • Mary Beth Kastner

    CFO & ASSISTANT TREASURER

    Total calculated
    $256,439
    From this org
    $0
    From related orgs
    $223,165
    Other
    $33,274
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $223,165 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0 + $13,825 related
    Nontaxable benefits
    $0 + $19,449 related
    Filer's total
    $0 + $256,439 related
  • Bobby Sanderson

    CHIEF INST. ADVANCEMENT OFFICER

    Total calculated
    $260,344
    From this org
    $0
    From related orgs
    $235,478
    Other
    $24,866
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $235,478 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0 + $10,631 related
    Nontaxable benefits
    $0 + $14,235 related
    Filer's total
    $0 + $260,344 related
  • Mark Johnson

    MANAGING DIRECTOR OF FINANCE

    Total calculated
    $174,077
    From this org
    $0
    From related orgs
    $153,464
    Other
    $20,613
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $153,464 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0 + $7,915 related
    Nontaxable benefits
    $0 + $12,698 related
    Filer's total
    $0 + $174,077 related
  • Philip Leachman

    MANAGING DIRECTOR, OPERATIONS

    Total calculated
    $179,708
    From this org
    $0
    From related orgs
    $161,636
    Other
    $18,072
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $161,636 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0 + $5,018 related
    Nontaxable benefits
    $0 + $13,054 related
    Filer's total
    $0 + $179,708 related
  • Rebecca Thompson

    CHIEF SCIENCE AND EDUCATION

    Total calculated
    $276,587
    From this org
    $0
    From related orgs
    $258,994
    Other
    $17,593
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $258,994 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0 + $8,135 related
    Nontaxable benefits
    $0 + $9,458 related
    Filer's total
    $0 + $276,587 related
  • Mindy Pierce

    MANAGING DIRECTOR, MARKETING & COMM.

    Total calculated
    $160,246
    From this org
    $0
    From related orgs
    $136,856
    Other
    $23,390
    Hours/week
    1 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $136,856 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0 + $4,338 related
    Nontaxable benefits
    $0 + $19,052 related
    Filer's total
    $0 + $160,246 related

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, and on a Form 990-PF Part VIII's — 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

  • 2025
    Revenue
    $10,815,081
    Expenses
    $9,659,434
    Contributions
    $4,852,762
    Grants paid
    $4,042,700
  • 2024
    Revenue
    $8,144,810
    Expenses
    $5,870,873
    Contributions
    $4,015,297
    Grants paid
    $194,600
  • 2023
    Revenue
    $7,769,767
    Expenses
    $5,696,809
    Contributions
    $2,655,988
    Grants paid
    $0
  • 2022
    Revenue
    $11,081,845
    Expenses
    $12,755,229
    Contributions
    $3,368,954
    Grants paid
    $0

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

  • 2021 · 990

    Revenue
    $19,478,193
    Expenses
    $12,992,583
    Assets (EOY)
    $53,330,924
  • 2020 · 990

    Revenue
    $8,476,945
    Expenses
    $11,511,723
    Assets (EOY)
    $52,073,485
  • 2019 · 990

    Revenue
    $13,435,760
    Expenses
    $15,104,659
    Assets (EOY)
    $54,290,199
  • 2018 · 990

    Revenue
    $12,754,445
    Expenses
    $13,575,537
    Assets (EOY)
    $52,951,303
  • 2017 · 990

    Revenue
    $14,361,624
    Expenses
    $14,623,532
    Assets (EOY)
    $55,361,326
  • 2016 · 990

    Revenue
    $13,492,836
    Expenses
    $11,569,333
    Assets (EOY)
    $55,919,983
  • 2015 · 990

    Revenue
    $14,825,558
    Expenses
    $12,676,074
    Assets (EOY)
    $51,379,659
  • 2014 · 990

    Revenue
    $15,272,770
    Expenses
    $13,503,812
    Assets (EOY)
    $48,487,064
  • 2013 · 990

    Revenue
    $13,356,909
    Expenses
    $17,169,477
    Assets (EOY)
    $49,758,286

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. 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

  • SAINT LOUIS SCIENCE CENTER

    $4,042,700

    2025 TO PROMOTE THE STUDY OF SCIENCE THROUGH EDUCATIONAL PROGRAMS AND FUNDRAISING ACTIVITIES.

  • SAINT LOUIS SCIENCE CENTER

    $194,600

    2024 TO PROMOTE THE STUDY OF SCIENCE THROUGH EDUCATIONAL PROGRAMS AND FUNDRAISING ACTIVITIES.

Where these grants went next →

Grants received

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

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2025 return

  • ST LOUIS SCIENCE CENTER

    SCIENCE MUSEUM · MO

Declared as related by

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 13 October 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.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 29 October 2026, for every organization at once. Returns through tax year 2025, the newest we have parsed for this organization.