- 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
-
HISTORY OF SCIENCE SOCIETY INC
$16,797
2024 NSF TRAVEL GRANT REIMBURSEMENT
-
HISTORY OF SCIENCE SOCIETY INC
$14,157
2023 NSF TRAVEL GRANT REIMBURSEMENT
-
HISTORY OF SCIENCE SOCIETY INC
$14,157
2022 NSF TRAVEL GRANT REIMBURSEMENT
-
$10,000
2022 PROGRAM SERVICE
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.