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SOCIETY OF TOXICOLOGY

EIN 52-6057050 RESTON, VA

Revenue 2023
$7,545,400
Expenses 2023
$8,076,051

Program services were 75.0% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
Classification
2800
Street
11190 SUNRISE VALLEY DR STE 300

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).

Officers and directors · 2023

As listed in Part VII of the 2023 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • TONIA MASSON

    EXECUTIVE DIRECTOR

    Total calculated
    $163,802
    From this org
    $0
    From related orgs
    $163,802
    Other
    $0
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $0 + $163,802 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0
    Nontaxable benefits
    $0
    Filer's total
    $0 + $163,802 related

  • LAURIE C HAWS PHD

    PRESIDENT

    Total calculated
    $0
    Hours/week
    1

  • DORI R GERMOLEC PHD

    PAST PRESIDENT

    Total calculated
    $0
    Hours/week
    1

  • CYNTHIA RIDER PHD

    VICE PRESIDENT

    Total calculated
    $0
    Hours/week
    1

  • JAMES P LUYENDYK PHD

    VICE PRESIDENT-ELECT

    Total calculated
    $0
    Hours/week
    1

  • BRIAN S CUMMINGS PHD

    TREASURER

    Total calculated
    $0
    Hours/week
    1

  • REBECCA C FRY PHD

    TREASURER - ELECT

    Total calculated
    $0
    Hours/week
    1

  • MATTHEW J CAMPEN PHD

    SECRETARY

    Total calculated
    $0
    Hours/week
    1

  • LAUREN M ALEKSUNES PHD

    COUNCILOR

    Total calculated
    $0
    Hours/week
    1

  • BETINA J LEW PHD

    COUNCILOR

    Total calculated
    $0
    Hours/week
    1

  • JENNIFER L RAYNER PHD

    COUNCILOR

    Total calculated
    $0
    Hours/week
    1

  • CHIDOZIE J AMUZIE PHD

    COUNCILOR

    Total calculated
    $0
    Hours/week
    1

  • DARRYL B HOOD PHD

    COUNCILOR

    Total calculated
    $0
    Hours/week
    1

  • AGNES L KARMAUS PHD

    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. Earlier years are each on their own filing page.

Filings

  • 2023
    Revenue
    $7,545,400
    Expenses
    $8,076,051
    Contributions
    $1,576,157
    Grants paid
    $669,393
  • 2022
    Revenue
    $7,575,120
    Expenses
    $7,921,596
    Contributions
    $1,381,442
    Grants paid
    $667,047

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

  • 2023 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2021 · 990

    Revenue
    $7,344,865
    Expenses
    $7,784,867
    Assets (EOY)
    $16,858,021

  • 2021 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2020 · 990

    Revenue
    $6,972,488
    Expenses
    $5,927,515
    Assets (EOY)
    $19,615,880

  • 2020 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2019 · 990

    Revenue
    $6,196,147
    Expenses
    $6,723,734
    Assets (EOY)
    $18,372,678

  • 2018 · 990

    Revenue
    $7,979,982
    Expenses
    $7,653,310
    Assets (EOY)
    $19,222,783

  • 2017 · 990

    Revenue
    $7,980,511
    Expenses
    $7,440,166
    Assets (EOY)
    $18,423,171

  • 2016 · 990

    Revenue
    $8,028,603
    Expenses
    $7,449,764
    Assets (EOY)
    $17,748,212

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. Showing the 10 most recent; the API carries the rest.

Grants made

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

Where these grants went next →

Grants received

Taxable family

From Schedule R Parts I, III and IV: entities that legally are the filer, and taxable partnerships, corporations and trusts it is related to. These record ownership and control, not shared board members or money.

Related corporations and trusts on its 2022 return

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 23 October 2026, for every organization at once. Returns through tax year 2023, the newest we have parsed for this organization.