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PHILOSOPHY OF SCIENCE ASSOCIATION

EIN 51-0141683 CINCINNATI, OH

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Revenue 2024
$421,466
Expenses 2024
$377,530

Program services were 90.5% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A77Z
Classification
2000
Street
2600 CLIFTON AVE - ML 0374

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).

Mission and programs · 2024

Mission

The Philosophy of Science Association (Inc.) promotes research, teaching and free discussion of issues in the philosophy of science from diverse standpoints.

  • PSA BIENNIAL CONFERENCE - PSA conducts a major conference every 2 years, with one running in Nov. 2024 and the next in Nov. 2026. The PSA Biennial Meeting is the largest meeting of philosophers of science in the world, with over 700 attendees from over 35 countries. The meeting provides an opportunity for scholars from around the world to present and get feedback on their work and to learn about the latest research in the field. The meeting also provides opportunities to mentor and support early-career scholars, to award distinguished scholarship in the field, to hold a Public Form about issues of broad public interest and a plethora of other teaching, learning and networking opportunities.

    Expenses $240,518 · Revenue $191,467

  • JOURNAL PUBLICATION - Since its inception in 1934, "Philosophy of Science," a professional journal, has been dedicated to the furthering of studies and free discussion from diverse standpoints in the philosophy of science. The Journal is published five times each year, once for each quarter with a December issue containing the PSA Conference proceedings. The Journal aims to publish the best original work in philosophy of science, broadly construed. This work will advance the discussion in some area of philosophy of science or the philosophy of a particular science in a way that is of direct interest to experts in the field, and in a way that explicitly acknowledges and responds to existing work in the area. Prior to selection and publishing, all submissions are peer reviewed with the author anonymous.

    Expenses $32,726 · Revenue $179,912

  • OTHER MEMBER PROGRAMS - >>ARCHIVES: PSA maintains a free electronic archive for scholarly articles, monographs and other material specifically tailored to philosophers of science to promote communication in the field by rapid dissemination of new work. >>AWARDS: PSA sponsors numerous awards, including the Hempel Award, the PSA Prize in Philosophy of Science & Race, and the Graduate Student Essay Award. The PSA DEI Caucus also awards the DEI Caucus Prize in Philosophy of Science. >> OTHER INITIATIVES: PSA provides other numerous programs, initiatives and opportunities to enhance and support those working and studying in the Philosophy of Science field. Please see our website for additional information on these initiatives.

    Expenses $68,479 · Revenue $26,009

As filed on the 2024 return.

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.

  • Max Cormendy

    Executive Director (non-voting)

    Total calculated
    $49,452
    From this org
    $49,452
    From related orgs
    $0
    Other
    $0
    Hours/week
    40
  • Craig Callender

    President

    Total calculated
    $0
    Hours/week
    5
  • Alan Love

    President Elect

    Total calculated
    $0
    Hours/week
    5
  • Michela Massimi

    Past President

    Total calculated
    $0
    Hours/week
    5
  • Chris Haufe

    Secretary (non-voting)

    Total calculated
    $0
    Hours/week
    1
  • Kevin Zollman

    Treasurer (non-voting)

    Total calculated
    $0
    Hours/week
    5
  • Mazviita Chirimuuta

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Mathias Frisch

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Kerry McKenzie

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Lydia Patton

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Stephanie Ruphy

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Jacqueline Sullivan

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • John Tsou

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Jim Weatherall

    Trustee

    Total calculated
    $0
    Hours/week
    1

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. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $421,466
    Expenses
    $377,530
    Contributions
    $29,018
    Grants paid
    $0
  • 2023
    Revenue
    $236,533
    Expenses
    $166,191
    Contributions
    $10,619
    Grants paid
    $0
  • 2022
    Revenue
    $429,471
    Expenses
    $329,490
    Contributions
    $55,951
    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
    $225,060
    Expenses
    $265,130
    Assets (EOY)
    $429,404
  • 2020 · 990

    Revenue
    $238,421
    Expenses
    $191,115
    Assets (EOY)
    $466,329
  • 2013 · 990-EZ

    Revenue
    $66,729
    Expenses
    $73,268
    Assets (EOY)
    $242,846
  • 2012 · 990-EZ

    Revenue
    $45,998
    Expenses
    $78,084
    Assets (EOY)
    $249,385
  • 2011 · 990-EZ

    Revenue
    $52,435
    Expenses
    $43,676
    Assets (EOY)
    $281,471
  • 2010 · 990-EZ

    Revenue
    $59,443
    Expenses
    $138,167
    Assets (EOY)
    $272,712

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

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

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 11 November 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 9 November 2026 and read 9 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.