Oklahoma Humane Society

Public charity · Grantmaker Oklahoma City, OK EIN: 20-8446621

The primary goal of the Oklahoma Humane Society is to end the needless euthanasia of adoptable pets in Oklahoma. Through its partnership with the Oklahoma city animal shelter, the organization is able to transfer dogs and cats at risk of euthanasia into its adoption and relocation programs. Through its spay and neuter program, the organization prevents the birth of unwanted pets and helps reduce intake at the Oklahoma city animal shelter. Humane education programs promote compassion toward animals and teach responsible pet ownership. The organization has a statewide initiative that is targeting rural communities to reduce pet overpopulation through spay / neuter, vaccines and education.

Oklahoma Humane Society at a glance

Total assets
$19,596,705
+372.4% vs 2023
Revenue (2024)
$19,976,779
+435.8% vs 2023
Net investment income (2024)
$11,717
-54.0% vs 2023
Expenses (2024)
$4,297,098
-18.8% vs 2023
Latest 990 filing
Form 990, 2024 View filing

Data from IRS Form 990, 2024; updated September 2026.

Who Oklahoma Humane Society funds

How this funder distributes its grants

Grant Size Distribution

3 grants across all recorded years

<$50K$50–100K2$100–250K$250–500K$500K–1M1$1–5M$5M+

The most common grant size was in the $100–250K range: 2 grants of 3 (67%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

1state

States

Cities

Oklahoma CityShady PointVinita

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$500K$1M$1.5M0 grants2020 Total only2021 1 grant2022 2 grants2023 0 grants2024

From 2021 to 2023, annual grant giving ranged from $308 (2021) to $1.3M (2023). In 2023 it made 2 grants totaling $1.3M.

Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
City of Vinita Vinita, OKAnimal Shelter$1,161,000
Arnall Family Foundation Oklahoma City, OKReturn of Previous Gift$148,000
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsNet Investment Income
2024$19,596,705$19,976,779$4,297,098——$11,717
2023$4,148,288$3,728,304$5,290,543$1,309,0002$25,446
2022$5,208,759$3,088,822$3,853,461$110,0001$22,109
2021$6,448,209$4,369,716$3,911,442$308Total only$14,801
2020$5,399,617$5,113,161$3,144,275——$-5,400

"Total only": grants paid as reported on the IRS filing, which lists no individual grants for that year.

About Oklahoma Humane Society

Based on IRS filings

Oklahoma Humane Society is a public charity focused on Environment & Animals, based in Oklahoma City, OK. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $19.6M in total assets. Net investment income was $12K.

Leadership & Key People

Officers and directors from IRS filings

Oklahoma Humane Society is led by Mark Eby, CEO on every filing since 2022; 3 of 23 officers listed in 2024 are compensated.

Officers on the 2024 filing

  • Mark Eby

    CEO

    On filings since 2022

    45 hrs/week

    $7K (2022) → $122K (2024)

  • Alba Weaver

    Chair

    Secretary → Vice Chair, 2023

    Vice Chair → Chair, 2024

    On filings since 2020

    1 hr/week

    No compensation reported

  • Amanda Elmenhorst

    Medical Director

    On filings since 2023

    40 hrs/week

    $109K (2023) → $113K (2024)

  • Avis Scaramucci

    Director

    Board of Directors → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Dudley Hyde

    Director

    Board of Directors → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Frank Hill

    Director

    Board of Directors → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Julie Carrington Hall

    Director

    Board of Directors → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Kathleen Moore

    Director

    Board of Director → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Lacie Lowry

    Director

    Board of Directors → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Martha Burger

    Director

    Board of Directors → Past Chair, 2021

    Past Chair → Director, 2022

    On filings since 2020

    1 hr/week

    No compensation reported

  • Matthew Chesnut

    Director

    Vice Chair → Chair, 2022

    Chair → Director, 2024

    On filings since 2020

    1 hr/week

    No compensation reported

  • Megan Tilly

    Director

    Board of Directors → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Shannon Presti

    Director

    Board of Directors → Director, 2021

    On filings since 2020

    1 hr/week

    No compensation reported

  • Hailey Benton-Thomas

    Director

    On filings since 2021

    1 hr/week

    No compensation reported

  • Daniel Mercer

    Director

    On filings since 2022

    1 hr/week

    No compensation reported

  • Carrie Blumert

    Director

    On filings since 2023

    1 hr/week

    No compensation reported

  • Hilarie Blaney

    Director

    On filings since 2023

    1 hr/week

    No compensation reported

  • Andrea Gossard

    Director

    New on the 2024 filing

    1 hr/week

    No compensation reported

  • Lauren Ottaway

    Director

    New on the 2024 filing

    1 hr/week

    No compensation reported

  • Shelley Maxted

    Director

    New on the 2024 filing

    1 hr/week

    No compensation reported

  • Emily Keith Dvm

    Veterinarian

    New on the 2024 filing

    40 hrs/week

    $102K (2024)

  • Caitlin Mazaheri

    Treasurer

    Board of Directors → Director, 2021

    Director → Treasurer, 2024

    On filings since 2020

    1 hr/week

    No compensation reported

  • Christine Hilton

    Vice Chair

    Director → Treasurer, 2022

    Treasurer → Vice Chair, 2024

    On filings since 2020

    1 hr/week

    No compensation reported

Former officers (13)
  • Former: Donita Thomas (2020–2023) — Past-Chair
  • Former: Jim Klepper (2020–2023) — Director
  • Former: Louise Bennett (2020–2023) — Director
  • Former: Shelley Sanders (2020–2023) — Director
  • Former: Dana R. McCrory (2020–2022) — Former President & CEO
  • Former: Jim Roth (2020–2022) — Director
  • Former: Lisa Knatvold (2020–2022) — Vice Chair
  • Former: Rita Hoch (2020–2022) — Director
  • Former: Mike Crutcher (2020–2021) — Director
  • Former: Sue Ann Arnall (2020–2021) — Director
  • Former: Lyndi Porter Zavy (2021) — Secretary
  • Former: Hailey Benton Thomas (2020) — Board of Directors
  • Former: Lyndi Porter (2020) — Board of Directors

Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Compensation Overview

From 2024 IRS filing

Mark EBY — CEO: $122KMark EBYCEO$122KAmanda Elmenhorst — Medical Director: $113KAmanda ElmenhorstMedical Director$113KEmily Keith DVM — Veterinarian: $102KEmily Keith DVMVeterinarian$102K

The highest reported compensation on the 2024 filing was $122K, to Mark EBY (CEO). 3 officers or directors reported compensation on that filing.

Frequently asked questions about Oklahoma Humane Society

How large is Oklahoma Humane Society?

Oklahoma Humane Society reported $19.6M in total assets on its 2024 IRS Form 990. Its revenue that year was $20.0M.

What is Oklahoma Humane Society?

Oklahoma Humane Society is a public charity focused on Environment & Animals, based in Oklahoma City, OK. It holds $19.6M in total assets as of 2024.

Where does Oklahoma Humane Society operate?

Oklahoma Humane Society has awarded grants in Oklahoma.

What is Oklahoma Humane Society's EIN?

Oklahoma Humane Society's EIN (Employer Identification Number) is 20-8446621. IRS Form 990 filing data is available on this page for 2020–2024.

Data last updated September 2026. Sourced from IRS Form 990 filings.

Data update history

(5)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990 for fiscal year 2020 (received by the IRS February 23, 2023)
  2. Updated Form 990 for fiscal year 2021 (received by the IRS October 31, 2023)
  3. Updated Form 990 for fiscal year 2022 (received by the IRS November 8, 2023)
  4. Updated Form 990 for fiscal year 2023 (received by the IRS October 7, 2024)
  5. IRS filings on file for fiscal years 2020–2024

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Browse active grant opportunities in Oklahoma Humane Society's focus areas in our free grants database

Similar Funders

Funders with grantees in common, and similar funders in Oklahoma

Arnall Family Foundation

Oklahoma City, OK

The Arnall Family Foundation funds criminal justice reform, homelessness services, youth welfare and justice, and community work in northeast Oklahoma City, supporting organizations or programs operating in Oklahoma. Its 2024 grants had a median of about $8,900, though awards ranged widely, and it does not accept unsolicited requests.

Assets

$27.7M

Grants

6

Total Given

$832K

Lockhart Foundation

Oklahoma City, OK

The Lockhart Foundation funds Oklahoma 501(c)(3) nonprofits rescuing domestic animals, including rescue, adoption, foster care, spay/neuter, and veterinary services, with preference for organizations in Cleveland and Oklahoma counties. In 2025, its 21 grants ranged from $2,500 to $36,000, with a median of $18,604. It accepts proposals year-round and meets quarterly.

Assets

$3.0M

Grants

21

Total Given

$394K

South Texas Outreach Foundation

Laredo, TX

In its final reported year, South Texas Outreach Foundation funded food assistance, shelter, animal care, rehabilitation, and other charitable services, primarily in Texas, with some grants elsewhere. Its 2022 grants ranged from $5,000 to $207,000, with a median of $32,500; it funded only preselected organizations and did not accept unsolicited requests. The foundation’s assets were transferred to North Texas Charitable Foundation.

Philanthropy, Voluntarism & Grantmaking

Assets

—

Grants

56

Total Given

$2.6M

BISSELL Pet Foundation

Grand Rapids, MI

BISSELL Pet Foundation funds U.S. animal welfare nonprofits and local-government entities working to reduce pet homelessness, including through adoption, spay/neuter, microchipping, transport, and crisis response. Its 2024 grants ranged from $157 to $30,000, with a median of $1,503, and its network spans all 50 states. Organizations must be approved Partners for Pets members in good standing for at least six months before applying; an online application is required during the submission window.

Assets

$2.8M

Grants

61

Total Given

$210K

Humane World for Animals Inc

Washington, DC

Humane World for Animals funds animal welfare work, including crisis care, shelter and rescue support, veterinary and spay/neuter services, and efforts to prevent cruelty; its work spans the United States and more than 50 countries. In 2025, grants ranged from $5,000 to $17.5 million, with a median of about $77,000. The profile does not state whether it accepts unsolicited requests.

Assets

$543.2M

Grants

209

Total Given

$51.2M

The American Society for the Prevention of Cruelty to Animals

New York, NY

The ASPCA funds animal welfare organizations and programs nationwide, including shelters, rescue groups, public agencies, and universities, with support for veterinary and shelter capacity, disaster response, research, education, and stronger animal protections. Its 2024 grants ranged from $5,000 to $1,065,500, with a median of $16,001. Application information is provided for specific programs; whether it accepts unsolicited requests is not stated.

Environment & Animals

Assets

$724.8M

Grants

538

Total Given

$21.8M

More similar funders

More Funders in Oklahoma

The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open

Figures come from Oklahoma Humane Society's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.

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