Marijke Mars
American heiress, billionaire, member of Mars family (Mars Inc.)
Source: Wikidata — retrieved 8/30/2026 (wikidata)
Profile Summary
Marijke Mars is an American heiress and member of the Mars family, whose wealth is associated with Mars Inc. Wikidata She was born in 1965, is based in California, and has an estimated net worth of ~$1.0 billion. Wikidata
Business & SEC Activity
SEC EDGAR The records contain 1,000 filings, including 791 insider filings; recent Form 4 filings report changes in company insiders' ownership or transactions. SEC EDGAR
Philanthropy
Three foundations listed under the Mars name reported a combined $1.16 million in grants and $4.76 million in assets; the two foundations reporting 2023 data accounted for all of those amounts. ProPublica 990 The Mars Foundation in New York reported $945,543 in grants and $1.87 million in assets, while Mars Family Foundation Inc. in Wisconsin reported $218,059 in grants and $2.89 million in assets. ProPublica 990 A Mars Foundation in Texas reported $0 in grants and $0 in assets for the available filing data. ProPublica 990
Political Activity
FEC records show seven contributions totaling $3,756 between July 29, 2008, and July 31, 2014. FEC The listed recipients included Obama for America ($2,500), the Obama Victory Fund ($1,000), the Democratic National Committee ($250), and ActBlue ($6); $2,750 was categorized as Democratic and $1,006 as PAC/Other. FEC
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
By Party
Top Recipients
Matched by name only. These are the donations the FEC lists under this person’s name — so a different person with the same name can show up here too.
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 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 8/31/2026 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