Marissa Mayer
Profile Summary
Marissa Mayer is a U.S. technology figure born in 1975 and listed in California. Her estimated net worth is ~$1.3B RTB.
Business & SEC Activity
SEC EDGAR lists 227 insider filings for Marissa A. Mayer, including filings connected to Nextdoor Holdings, Starbucks, Walmart, Symbotic, and Baxter International SEC EDGAR. The most recent filings listed are from January through June 2026 and are primarily Form 4 filings, which report changes in an insider’s ownership of a company’s securities SEC EDGAR.
Philanthropy
Three listed foundations reported combined assets of $4,504,254 and grants paid of $908,434 for tax year 2023 ProPublica 990. The Mayer Foundation in New York reported $92,543 in assets and $100,950 in grants; the Mayer Family Foundation in Connecticut reported $4,186,345 in assets and $807,370 in grants; and the Mayer Family Foundation in Pennsylvania reported $225,366 in assets and $114 in grants ProPublica 990.
Political Activity
The most recent 100 federal contribution records on file show at least $412,944.73 in contributions, covering sampled records from September 12, 2013, through October 31, 2024 FEC. The sample’s party breakdown was $206,110.52 to Democratic recipients, $205,152.62 to recipients with an unknown party classification, and $1,681.59 to Democratic–Farmer–Labor recipients FEC. The largest listed recipients were the Harris Victory Fund and Hillary Victory Fund, at $100,000 each, followed by two Democratic National Committee entries totaling $74,700 and Harris for President at $6,600 FEC.
These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
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.
Political Contributions
These figures cover the 100 most recent of 121 federal contributions on file, not the full record. The total, party split, top recipients and dates below are all computed over that sample, so each is a floor rather than a complete figure.
By Party (in the sample)
Every party in this sample is listed here. The bars are rounded for display; unrounded they total exactly $412,944.73.
Top Recipients (in the sample)
Matched by name only. These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
SEC Filings
Associated Companies
Entities appearing alongside this person in SEC full-text search — an association, not necessarily ownership or control. Follow each link to the primary SEC record to judge for yourself.
Recent Insider Filings
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.