Elaine Tettemer Marshall
American billionaire heiress
Source: Wikidata — retrieved 10/11/2026 (wikidata)Dispute
Profile Summary
A net worth stated in this summary may be out of date.
Elaine Tettemer Marshall (born 1942) is an American billionaire heiress with an estimated net worth of ~$30.9B. Her billionaire status and heiress description are reported in Wikidata. She is associated with multiple entities named “Marshall Foundation” that filed recent U.S. nonprofit tax returns. Wikidata ProPublica 990
Philanthropy
Across three Marshall Foundation filings (AZ and CA for tax year 2023; TX for tax year 2022), the reported total foundation assets sum to $29,176,565 and total grants paid were $0. Individually, the Tucson, AZ Marshall Foundation reported $28,493,869 in assets, $15,402,793 in revenue, $5,124,716 in expenses, and $0 grants paid for 2023. The Los Angeles, CA and Katy, TX Marshall Foundation filings also reported $0 grants paid, while reporting expenses of $80,934 (2023) and $103,925 (2022), respectively. ProPublica 990
U.S. Presence
Philanthropy
Foundations are matched to a person by name, not by trustee records — so a same-surname family foundation can land here in error. Every entity below links to its full IRS filing; if one doesn’t belong, tell us at hello@skylarkcreations.com and we’ll pull it.
Score Breakdown
The giving score 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 record we hold about this person — net worth, SEC filings, foundation 990s, news coverage, Wikidata. It measures our coverage, not how open the person is. Each further kind of record scores higher, up to eight. Political donation records matched to a person by name alone are not counted: they may belong to someone else with the same name. From October 7, 2026, our own AI-written summary and the profile photo are not counted either — neither is a public record — so grades that leaned on them moved down that day.
Data: SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): Giving score = 65% x Philanthropy + 35% x Data coverage
Scored on 10/16/2026 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