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← AMERICAN PHILOSOPHICAL SOCIETY

Form 990 for tax year 2024

Filed by AMERICAN PHILOSOPHICAL SOCIETY.

Totals

Total revenue
$20,391,804
Total expenses
$15,571,638
Contributions and grants received
$3,265,366
Grants paid
$1,754,046
Program service revenue
$150,943
Investment income
$16,906,951
Other revenue
$68,544
Total assets, end of year
$310,248,157
Total liabilities, end of year
$7,715,566
Net assets or fund balances, end of year
$302,532,591
Program services expenses (Part IX)
$11,302,992
Management and general expenses
$3,472,986
Fundraising expenses
$795,660
Program service expenses (Part III)
$11,302,992

Program services were 72.6% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

Line items

Every line the filer filed in Parts VIII, IX and X, as filed and in filed order. Blank columns are left out, and the lines are not forced to add up to the totals above.

Revenue

Part VIII, the statement of revenue.

  • 1e · Government grants (contributions)

    $33,879

  • 1f · All other contributions, gifts and grants

    $3,231,487

  • 1g · Noncash contributions included above

    $279,571

  • 2a · Program service revenue: Publications sales

    total $150,943 · related or exempt $150,943

  • 3 · Investment income

    total $6,581,784 · excluded $6,581,784

  • 4 · Income from investment of tax-exempt bond proceeds

    total $0

  • 5 · Royalties

    total $0

  • 6a · Gross rents

    real property $20,255

  • 6c · Rental income or loss

    real property $20,255

  • 6d · Net rental income or loss

    total $20,255 · excluded $20,255

  • 7a · Gross sales of assets other than inventory

    securities $27,987,002

  • 7b · Less cost or other basis and sales expenses

    securities $17,661,835

  • 7c · Gain or loss

    securities $10,325,167

  • 7d · Net gain or loss

    total $10,325,167 · excluded $10,325,167

  • 8c · Net income from fundraising events

    total $0

  • 9c · Net income from gaming

    total $0

  • 10c · Net income from sales of inventory

    total $0

  • 11a · Other revenue: Digitization Royalties

    total $2,581 · excluded $2,581

  • 11b · Other revenue: Exhibition Sales

    total $30,923 · excluded $30,923

  • 11c · Other revenue: Misc. Inc. Photo Duplicat

    total $13,664 · excluded $13,664

  • 11d · All other revenue

    total $1,121 · excluded $1,121

  • 11e · Other revenue, total

    $48,289

Functional expenses

Part IX, the statement of functional expenses.

  • 1 · Grants to domestic organizations and governments

    total $15,000 · program services $15,000

  • 2 · Grants to domestic individuals

    total $1,591,346 · program services $1,591,346

  • 3 · Grants to foreign organizations and individuals

    total $147,700 · program services $147,700

  • 4 · Benefits paid to or for members

    total $0

  • 5 · Compensation of officers, directors and key employees

    total $1,239,765 · program services $271,636 · management and general $844,153 · fundraising $123,976

  • 6 · Compensation of disqualified persons

    total $0

  • 7 · Other salaries and wages

    total $3,982,801 · program services $3,386,876 · management and general $242,736 · fundraising $353,189

  • 8 · Pension plan contributions

    total $242,291 · program services $195,541 · management and general $19,356 · fundraising $27,394

  • 9 · Other employee benefits

    total $735,090 · program services $627,345 · management and general $47,153 · fundraising $60,592

  • 10 · Payroll taxes

    total $366,024 · program services $273,878 · management and general $60,314 · fundraising $31,832

  • 11a · Fees: management

    total $0

  • 11b · Fees: legal

    total $55,363 · management and general $55,363

  • 11c · Fees: accounting

    total $111,332 · management and general $111,332

  • 11d · Fees: lobbying

    total $0

  • 11e · Fees: professional fundraising services

    total $0

  • 11f · Fees: investment management

    total $994,886 · management and general $994,886

  • 11g · Fees: other

    total $0

  • 12 · Advertising and promotion

    total $0

  • 13 · Office expenses

    total $65,830 · management and general $65,830

  • 14 · Information technology

    total $147,571 · management and general $147,571

  • 15 · Royalties

    total $0

  • 16 · Occupancy

    total $909,846 · program services $909,846

  • 17 · Travel

    total $0

  • 18 · Travel or entertainment for public officials

    total $0

  • 19 · Conferences, conventions and meetings

    total $499,197 · program services $499,197

  • 20 · Interest

    total $0

  • 21 · Payments to affiliates

    total $0

  • 22 · Depreciation, depletion and amortization

    total $677,885 · program services $581,445 · management and general $92,000 · fundraising $4,440

  • 23 · Insurance

    total $118,016 · management and general $118,016

  • 24a · Other expenses: Printing and Publications

    total $632,107 · program services $632,107

  • 24b · Other expenses: Library operations

    total $596,599 · program services $596,599

  • 24c · Other expenses: FASB benefits expenses

    total $428,313 · program services $305,923 · management and general $83,292 · fundraising $39,098

  • 24d · Other expenses: Special Purposes Library

    total $309,954 · program services $309,954

  • 24e · All other expenses

    total $1,704,722 · program services $958,599 · management and general $590,984 · fundraising $155,139

Balance sheet

Part X, book values.

  • 1 · Cash, non-interest-bearing

    beginning of year $7,324,332 · end of year $712,018

  • 2 · Savings and temporary cash investments

    beginning of year $13,430,560 · end of year $10,503,888

  • 3 · Pledges and grants receivable

    beginning of year $723 · end of year $52,750

  • 4 · Accounts receivable

    end of year $0

  • 5 · Loans and receivables from officers and key people

    end of year $0

  • 6 · Loans and receivables from disqualified persons

    end of year $0

  • 7 · Other notes and loans receivable

    end of year $0

  • 8 · Inventories for sale or use

    end of year $0

  • 9 · Prepaid expenses and deferred charges

    beginning of year $345,720 · end of year $449,978

  • 10a · Land, buildings and equipment: cost or other basis

    $32,356,622

  • 10b · Land, buildings and equipment: accumulated depreciation

    $20,014,076

  • 10c · Land, buildings and equipment, net

    beginning of year $12,526,881 · end of year $12,342,546

  • 11 · Investments: publicly traded securities

    beginning of year $190,448,076 · end of year $207,388,639

  • 12 · Investments: other securities

    beginning of year $67,959,064 · end of year $78,798,337

  • 13 · Investments: program-related

    end of year $0

  • 14 · Intangible assets

    end of year $0

  • 15 · Other assets

    beginning of year $2 · end of year $1

  • 17 · Accounts payable and accrued expenses

    beginning of year $417,615 · end of year $196,386

  • 25 · Other liabilities

    beginning of year $7,805,290 · end of year $7,519,180

  • 27 · Net assets without donor restrictions

    beginning of year $40,227,807 · end of year $41,926,525

  • 28 · Net assets with donor restrictions

    beginning of year $243,584,646 · end of year $260,606,066

Mission and programs · 2024

Mission

The American Philosophical Society, the oldest learned society in the United States, was founded in 1743 by Benjamin Franklin for the purpose of "promoting useful knowledge." In the 21st century the Society sustains this mission in three principal ways. It honors and engages distinguished scientists, humanists, social scientists, and leaders in civic and cultural affairs through elected membership and opportunities for interdisciplinary, intellectual fellowship, particularly in the semi-annual Meetings in Philadelphia. It supports research and discovery through grants and fellowships, lectures, publications, prizes, exhibitions, and public education. It serves scholars through a research library of manuscripts and other collections internationally recognized for their enduring historic value. The American Philosophical Society's current activities reflect the founder's spirit of inquiry, provide a forum for the free exchange of ideas, and convey the conviction of its members that intel

Activities or mission (Part I)

The American Philosophical Society, the oldest learned society in the United States, was founded in 1743 by Benjamin Franklin for the purpose of "promoting useful knowledge." In the 21st century the Society sustains this mission with various programs described further within.

  • The Society's printed Yearbook for 2024 gives a complete account of the Society's activities. A copy will be furnished upon request. Details concerning contributions and research grants are on hand and are available for inspection at the Society's office.

    Expenses $11,302,992 · Grants $1,754,046 · Revenue $150,943

As filed on the 2024 return.

Listed in Part VII

  • Dr Robert M Hauser

    CEO

    Total calculated
    $376,275
    From this org
    $341,000
    From related orgs
    $0
    Other
    $35,275
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $341,000
    Bonus
    not reported
    Other
    not reported
    Deferred
    $27,280
    Nontaxable benefits
    $7,995
    Filer's total
    $376,275
  • Michelle McDonald

    Dir of Library

    Total calculated
    $301,818
    From this org
    $257,373
    From related orgs
    $0
    Other
    $44,445
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $257,373
    Bonus
    not reported
    Other
    not reported
    Deferred
    $16,500
    Nontaxable benefits
    $27,945
    Filer's total
    $301,818
  • John Wolfe

    Financial Offic

    Total calculated
    $300,742
    From this org
    $251,750
    From related orgs
    $0
    Other
    $48,992
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $251,750
    Bonus
    not reported
    Other
    not reported
    Deferred
    $5,793
    Nontaxable benefits
    $43,199
    Filer's total
    $300,742
  • Dr Patrick Spero

    CEO

    Total calculated
    $260,930
    From this org
    $231,916
    From related orgs
    $0
    Other
    $29,014
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $231,916
    Bonus
    not reported
    Other
    not reported
    Deferred
    $15,000
    Nontaxable benefits
    $14,014
    Filer's total
    $260,930
  • Linda Jacobs

    Development Direct

    Total calculated
    $222,211
    From this org
    $192,610
    From related orgs
    $0
    Other
    $29,601
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $192,610
    Bonus
    not reported
    Other
    not reported
    Deferred
    $15,408
    Nontaxable benefits
    $14,193
    Filer's total
    $222,211
  • Gary David

    Asso Dir of Collec

    Total calculated
    $176,288
    From this org
    $139,050
    From related orgs
    $0
    Other
    $37,238
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $139,050
    Bonus
    not reported
    Other
    not reported
    Deferred
    $11,124
    Nontaxable benefits
    $26,114
    Filer's total
    $176,288
  • Mary Grace Wahl

    Assoc Dir of Colle

    Total calculated
    $159,993
    From this org
    $113,810
    From related orgs
    $0
    Other
    $46,183
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $113,810
    Bonus
    not reported
    Other
    not reported
    Deferred
    $9,440
    Nontaxable benefits
    $36,743
    Filer's total
    $159,993
  • Bayard Miller

    Assoc Dir of Digit

    Total calculated
    $147,161
    From this org
    $120,120
    From related orgs
    $0
    Other
    $27,041
    Hours/week
    40
  • Linda Musumeci

    Dir of Grants & Fe

    Total calculated
    $133,218
    From this org
    $122,802
    From related orgs
    $0
    Other
    $10,416
    Hours/week
    40
  • Dr Joanna Aizenberg

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Julia H Gaisser

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Jacqueline K Barton

    V.P./Council

    Total calculated
    $0
    Hours/week
    1
  • Dr Dusa McDuff

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Clyde F Barker

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Linda K Kerber

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Vijay Kumar

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Jianguo Liu

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Anne Case

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr David Skorton

    Councilor/Secy

    Total calculated
    $0
    Hours/week
    1
  • Dr Richard E Lenski

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • John S Reed

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Linda Greenhouse

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Nina Jablonski

    V.P./Council

    Total calculated
    $0
    Hours/week
    1
  • Sir Mark Thompson

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Kathleen Hall Jamieson

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Andrew Delbanco

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Paul W Kroll

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Leslie C Aiello

    Curator/Council

    Total calculated
    $0
    Hours/week
    1
  • Mr Richard B Worley

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Jonathan R Cole

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Ronald M Fairman

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Margaret H Marshall

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Marna C Whittington

    Councilor/Treas

    Total calculated
    $0
    Hours/week
    1
  • Dr Alan S Blinder

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Robert James Miller

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Harriet Zuckerman

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr David Hollinger

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Keith S Thomson

    Curator/Council

    Total calculated
    $0
    Hours/week
    1
  • Dr Roger S Bagnall

    Pres/Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr William H Hooke

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr Caroline W Bynum

    Councilor/V.P.

    Total calculated
    $0
    Hours/week
    1
  • Dr Douglas S Massey

    Councilor

    Total calculated
    $0
    Hours/week
    1
  • Dr John C Van Horne

    Councilor

    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. 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.

Schedule J

Answered yes

  • 1a · Health or social club dues or initiation fees
  • 2 · Substantiation required before reimbursing expenses
  • 3 · Compensation survey or study
  • 3 · Approval by the board or compensation committee

Answered no

  • 1b · Written policy on the line-1a expenses
  • 4a · Severance or change-of-control payment
  • 4b · Supplemental nonqualified retirement plan
  • 4c · Equity-based compensation arrangement
  • 5a · Pay contingent on this organization's revenues
  • 5b · Pay contingent on a related organization's revenues
  • 6a · Pay contingent on this organization's net earnings
  • 6b · Pay contingent on a related organization's net earnings
  • 7 · Other non-fixed payments
  • 8 · Paid under the initial-contract exception

The filer's explanations (Part III)

Part I, Line 1a: Relevant information in regards to selections on 1a.
The Society paid $4,014 for social club memberships for the Orgnization's CEO.
Part I, Line 1b: Reason for not following policy regarding payment provisions for expenses
The Society has no written policy regarding compensation of this nature.The Society's Executive Officer and President decided together to provide this compensation to the Officer.

Part I's answers as filed. A line not listed was left unanswered; on lines 1a and 3 that means the box was not checked.

Grants on this return

Provenance

Return type
form_990
Tax year
2024
Filed
3 November 2025
IRS schema version
2024v5.2
Source object
202523079349302742

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