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Governance Register
US nonprofit · EIN 227134561 · Reston, VAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 227134561) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe time served.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2025: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Society of Toxicologic Pathology's network

9 peoplei9 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (9). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

The board

9 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 9 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Deepa Bandi RAO (also filed as Deepa RAO)Councilor2021
5 yrs
Erin QuistSecretary-Treasurer2022
4 yrs
Jonathan Werner (also filed as Jon Werner)President Elect2018
8 yrs
Kathleen Heinz-TahenyCouncilor2024
2 yrs
Marie-Odile Benoit-BiancamanoCouncilor2022
4 yrs
Mark James Hoenerhoff (also filed as Mark Hoenerhoff, Mark J Hoenerhoff)Past President2018
8 yrs
Molly BoyleCouncilor2021
5 yrs
Richard A Peterson II (also filed as Richard A Peterson, Richard Peterson II)President2018
8 yrs
Wendy HelpernCouncilor2023
3 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

1 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Matthew J PriceExecutive Directorsince 2018

Pay and hours

year to 31 December 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Jon WernerPresident4$0
Richard A Peterson IIPast President2$0
Elizabeth GalbreathPresident Elect2$0
Erin QuistSecretary-Treasurer2$0
Keith NelsonSecretary-Treasurer-Elect2$0
Marie-Odile Benoit-BiancamanoCouncilor1$0
Elizabeth ClarkCouncilor1$0
Wendy HelpernCouncilor1$0
Kathleen Heinz-TahenyCouncilor1$0
Ingrid D PardoCouncilor1$0
Matthew PriceExecutive Director40$0

No pay was reported for anyone in Part VII on this return.

About

Legal name
Society of Toxicologic Pathology
EIN
227134561
Address
11190 Sunrise Valley Dr Ste 300, Reston, VA, 20191-4375
State
Virginia
Mission
The mission and vision of the society of toxicologic pathology (stp) is to be recognized as an international leader for improvement of human, animal, and environmental health using an interdisciplinary scientific approach based in pathology and toxicology by scientific, legislative, and regulatory stakeholders. Further to this, stp will be a global leader in providing educational and career... (as filed on the Form 990)
Activity (NTEE)
G97Z Voluntary health associations and medical disciplines
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Voluntary Health Associations & Medical Disciplines
Size band
6 (IRS master file code)
Formed
1971
Principal officer
Tierre Miller (as named on the Form 990)
IRS ruling date
1 May 1972
Status
Code 01 (unconditional exemption)
Form 990 filings on record
7, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥8years on the filingsJonathan Werner
≥8years on the filingsMark James Hoenerhoff
≥8years on the filingsRichard A Peterson II
≥5years on the filingsDeepa Bandi RAO

Latest return

year to 31 December 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2025. US dollars, as filed.
Total assets
$2.3m
Total liabilities
$318k
Net assets or fund balances
$2m
Contributions and grants received
$174k
Program service revenue
$805k
Grants and similar paid out
$26k
Employees
0
Volunteers
385

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$1.1m$1.1mDeficit $46k

As filed on the IRS Form 990. US dollars.

State registration

1 entityiBusiness-entity registers published by US states. These records are matched to this organisation by name and state, not by EIN, and are labelled as likely matches. Street addresses are not shown.
Society Of Toxicologic Pathology, Inc. likely matchiMatched by exact name and state (and ZIP where shown). State registers do not publish EINs, so this is not a confirmed match. Source: Texas Comptroller of Public Accounts, entity data (data.texas.gov 9cir-efmm). Licence not stated. Data last fetched 18 October 2026.
State
Texas
Status
Not stated
Formed
Not stated
Registered agent
Not stated

This register does not publish officers or directors.