Net worth
$50.3B
Forbes Real-Time · as of Sep 24, 2026
Latest moves
No moves from John Mars in the digest yet. The archive grows every morning.
Recent SEC filings
This person doesn't file with the SEC.
Footprint
Companies
Mars, IncorporatedCo-owner · ~1/3 (Forbes estimate… · as of Sep 2026
source ↗More
- Role
- Co-owner; former co-president/CEO; listed as Chairman on Wikipedia (board role not confirmed on mars.com)
- Stake
- ~1/3 (Forbes estimate; siblings John and Jacqueline each ~1/3, late brother Forrest Jr.'s daughters the remaining third)
- Stake as of
- 2026-09-24
Kellanova (Pringles, Cheez-It, Pop-Tarts, Eggo etc.) - wholly owned Mars subsidiary via Acquiror 10VB8, LLCDelisted from NYSE Dec 2025 · Owned through Mars, Inc. · 100% · as of Dec 2025
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- Exchange
- Delisted from NYSE Dec 2025
- Role
- Owned through Mars, Inc.
- Stake
- 100% held by Mars
- Stake as of
- 2025-12-11
Mars Petcare (Royal Canin, Pedigree, Whiskas; vet chains Banfield, VCA, BluePearl, AniCura, Linnaeus)Owned through Mars, Inc.
source ↗Mars Snacking (Mars Wrigley: M&M's, Snickers, Twix, Wrigley gum; KIND; Hotel Chocolat)Owned through Mars, Inc.
source ↗Mars Food & Nutrition (Ben's Original etc.)Owned through Mars, Inc.
source ↗Private deals
Mars completed acquisition of Kellanova at $83.50/share cash (~$35.9bn incl. debt, per Forbes); EU unconditional…Dec 2025
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- In full
- Mars completed acquisition of Kellanova at $83.50/share cash (~$35.9bn incl. debt, per Forbes); EU unconditional approval Dec 8, 2025; Kellanova delisted from NYSE
- Date
- 2025-12-11
Mars opened a THB 7 billion Pringles plant in ThailandSep 2026
source ↗Real estate
Jackson, WyomingResidence (per Forbes; previously… · as of 2026
source ↗More
- Type
- Residence (per Forbes; previously Fairfax County, Virginia per Wikipedia)
- Date
- as of 2026
Legal & regulatory
European Commission review delayed the Kellanova deal; unconditional clearance Dec 8, 2025 (FTC also cleared)
source ↗International Rights Advocates v. Mars, Inc. et al., D.D.C. No. 1:24-cv-894 (Judge Royce Lamberth)…
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- In full
- International Rights Advocates v. Mars, Inc. et al., D.D.C. No. 1:24-cv-894 (Judge Royce Lamberth), consumer-protection suit tied to cocoa supply-chain child labor claims; memorandum opinion issued Mar 13, 2025 (outcome not verified here)
Giving
Supporter (with wife Adrienne) of the Smithsonian Institution
source ↗Research gaps: No verified individual SEC CIK (EDGAR name search for 'Mars John' returned no match). No family office, foundation EIN, or recent real estate transactions verified. Mars is private: no earnings dates. Current Mars board chair title not confirmed by a primary source. Web search budget was exhausted mid-task, limiting depth.
What to watch
Integration of Kellanova into Mars Snacking after Dec 2025 close (private company; no public earnings calendar)
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