Endowment / Foundation

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The Humane Society of the United States

Humane World for Animals (formerly the Humane Society of the United States and Humane Society International) is a global leader in animal welfare, working to...

The Humane Society of the United States logo

The Humane Society of the United States

Humane World for Animals (formerly the Humane Society of the United States and Humane Society International) is a global leader in animal welfare, working to end animal suffering and promote compassionate living.

General information

Firm type

Endowment / Foundation

Year founded

1954

AUM

Undisclosed

Location

Region

North America

Country

United States

City

Washington

Corporate office

1255 23rd Street NW, Suite 450, Washington, DC 20037, United States

Principals

Kitty Block

President and CEO

Susan Atherton

Co-Chair of the Board of Directors

Thomas J. Sabatino, Jr.

Co-Chair of the Board of Directors

Sector focus

Real EstateHedge FundsPrivate Credit

Frequently asked questions

How does HSUS fund its operations beyond public donations?

The Humane Society of the United States maintains a diversified investment portfolio that generates revenue to support its advocacy, litigation, and direct animal-care operations. This includes commercial real estate such as its Washington, DC headquarters, a portfolio of wildlife sanctuaries and rescue facilities across 38 states and multiple countries, and an offshore investment portfolio in the Caribbean and Europe. HSUS also operates a cryptocurrency donation program that accepts digital assets and converts them to operational funding.

Who governs HSUS's investment decisions and endowment strategy?

The board of directors holds ultimate fiduciary responsibility for HSUS's assets. Thomas J. Sabatino, Jr., former General Counsel of Aetna, serves as Co-Chair of the Board and brings significant regulated-industry financial oversight experience. Another board member, Chuck Laue, is a co-founder of Stray Dog Capital, a venture firm focused on alternative proteins. While HSUS does not publicly disclose the structure of its investment committee, board members with this profile provide governance for its generalist, multi-asset strategy.

Does HSUS make mission-related investments or direct venture investments?

HSUS itself does not promote a dedicated mission-related investing program or take direct venture positions in animal-aligned startups. However, there is a connective line through its governance: board member Chuck Laue co-founded Stray Dog Capital, which invests in plant-based and alternative protein companies. The investment posture of HSUS remains a generalist asset-owner mandate rather than a targeted impact-investing strategy.

How is HSUS related to Humane Society International and the Humane Society Legislative Fund?

HSUS operates Humane Society International (HSI) as its global arm, extending animal protection programs into more than 50 countries. The Humane Society Legislative Fund (HSLF) is a separate 501(c)(4) entity that lobbies for animal-protection legislation at the state and federal level. While all three share the Humane Society brand, they are legally distinct organizations that together form an integrated advocacy network.

What real assets does HSUS own?

HSUS holds a substantial portfolio of real property. Its primary asset is its headquarters building at 1255 23rd Street NW in Washington, DC. The organization also owns and operates two large-scale animal sanctuaries — the Cleveland Amory Black Beauty Ranch in Murchison, Texas, and the Duchess Sanctuary in Oregon — as well as the South Florida Wildlife Center in Fort Lauderdale and the Cape Wildlife Center in Barnstable, Massachusetts. Its sanctuary and rescue network extends across 38 states and nine countries.

Does HSUS maintain an offshore investment presence?

Yes. HSUS maintains an offshore investment portfolio with vehicles domiciled in the Caribbean and Europe. The specific fund managers, strategies, and asset allocations within this portfolio are not publicly disclosed, but it functions as part of the organization's broader endowment and treasury-management strategy to diversify revenue beyond traditional U.S. donor cycles.

What level of financial transparency does HSUS provide?

HSUS is accredited by the BBB Wise Giving Alliance, meeting its 20 standards for charity accountability including governance, financial reporting, and transparency. As a tax-exempt 501(c)(3) organization, HSUS files IRS Form 990 annually, which provides public disclosure of revenue, executive compensation, and program spending. However, HSUS does not disclose granular detail on its investment portfolio holdings or total endowment value on a real-time or quarterly basis.

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