Marijke Mars
American heiress, billionaire, member of Mars family (Mars Inc.)
Source: Wikidata — retrieved 7/12/2026 (wikidata)
Profile Summary
Marijke Mars (born 1965) is an American heiress and a member of the Mars family associated with Mars, Inc. Wikidata. She is listed with an estimated net worth of ~$1.0B and is based in California Wikidata.
Business & SEC Activity
SEC EDGAR search results show activity tied to Kellanova (ticker: K) and an entity named Acquiror 10VB8, LLC SEC EDGAR. The dataset reports 791 insider filings and shows recent Form 4 filings in December 2025; Form 4 is used to report insider transactions (buys/sells and other changes) by company insiders SEC EDGAR.
Philanthropy
ProPublica 990 data lists three foundations: Mars Foundation (NY, tax year 2023), Mars Wrigley Foundation (DE, tax year 2023), and Mars Foundation (TX) ProPublica 990. Across these filings, total foundation assets are reported at $41,306,734 and total grants paid are reported as $0, including $0 grants paid by the NY and DE foundations in 2023 despite reporting assets of $1,867,388 and $39,439,346 respectively ProPublica 990.
Political Activity
FEC records show 7 contributions totaling $3,756 from 2008-07-29 to 2014-07-31 FEC. The largest recipients listed are Obama for America ($2,500) and Obama Victory Fund ($1,000), and the party breakdown shows $2,750 to Democrats and $1,006 to PAC/Other FEC.
U.S. Presence
Philanthropy
Political Contributions
By Party
Top Recipients
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 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