Gwendolyn Sontheim Meyer
American show jumper, heiress (Cargill), billionaire
Source: Wikidata — retrieved 7/12/2026 (wikidata)
Profile Summary
Gwendolyn Sontheim Meyer is an American show jumper and Cargill heiress, with an estimated net worth of ~$5.4B. She was born in 1961 and is based in the United States. Wikidata
Philanthropy
Three foundations in 2023 filings show combined assets of $56,802,913 and total grants paid of $0. The largest, The Meyer Foundation (NY), reported $56,167,395 in assets, $740,534 in revenue, $3,574,049 in expenses, and $0 in grants paid for 2023. The other two foundations (OH and IL) also reported $0 grants paid in 2023. ProPublica 990
Political Activity
From 2019-02-10 to 2025-12-31, she made 66 federal contributions totaling $4,054,353.49. The top recipients were Democratic Grassroots Victory Fund ($1,730,000), Nancy Pelosi Victory Fund ($594,700), DCCC ($564,600), DNC Services Corp / Democratic National Committee ($355,000), and Jeffries Battleground Protection Fund ($322,100). The reported party breakdown was $1,137,553.49 to DEM and $2,916,800 to PAC/Other. FEC
U.S. Presence
Philanthropy
Political Contributions
By Party
Top Recipients
Score Breakdown
The PBS is a weighted average of 2 components. The formula is open and versioned — the weight percentages below show how much each component contributes to the final score.
Evidenced charitable giving — built on what they actually give each year, not parked assets. Dominated by generosity (annual giving relative to net worth — the share of your fortune you give), plus the absolute scale of that giving, plus a small nudge for signing the Giving Pledge (a commitment, not a realized action).
Data: ProPublica 990 charitable disbursements, net worth, The Giving Pledge registry
How much sourced, public accountability data exists — net worth, political contributions, SEC filings, foundation 990s, news coverage, and a verified profile. More public disclosure scores higher.
Data: FEC, SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): PBS = 65% x Philanthropy + 35% x Transparency
Scored on 6/23/2026 on a 0–100 scale. The score uses only the signals we have populated data for. Goal Impact, Controversy, and Community Approval are deferred until that data exists — Phase 1 goal adoption, controversy detection, and community votes respectively.
All data is sourced from public records. Each section links to its original source. View on Wikidata