Net worth
$258.5B
Forbes Real-Time · as of Sep 24, 2026
Latest moves
No moves from Sergey Brin in the digest yet. The archive grows every morning.
Recent SEC filings
SEC filings · last 90 days
Converted 673K GOOGLGifted 673K GOOGLGifted 673K GOOGL
Form 4 insider trades post within 2 business days. 13F fund holdings can arrive 45 days after quarter end. New to filings? Read Filings 101.
Footprint
Companies
Alphabet Inc. (Google) - Class B sharesGOOGL · Nasdaq · Co-founder, director · 358,939,978 Class B shares =… · as of Dec 2025 · $342.36 ▲ 1.34%
source ↗More
- Ticker
- GOOGL
- Exchange
- Nasdaq
- Role
- Co-founder, director; returned to hands-on AI (Gemini) work in 2023
- Stake
- 358,939,978 Class B shares = 42.86% of Class B (10 votes/share); 5.81% of Class A on as-converted basis (13G/A)
- Stake as of
- 2025-12-31
Alphabet Inc. - direct holdings per latest Form 4GOOG · Nasdaq · Co-founder, director · 357,921,378 Class B +… · as of Aug 2026 · $339.01 ▲ 1.20%
source ↗More
- Ticker
- GOOG
- Exchange
- Nasdaq
- Role
- Co-founder, director
- Stake
- 357,921,378 Class B + 359,159,912 Class C shares held directly (plus 172,700 each of B and C in two CRUTs)
- Stake as of
- 2026-08-07
LTA Research & Exploration LLC (rigid airship developer, Pathfinder 1)Founder/backer
source ↗More
- Role
- Founder/backer (founded 2013)
Stakes
Soneira Bio (psychedelic drug research, via Brin/Catalyst4 ecosystem)
source ↗Investment vehicles
Bayshore Global Management LLCfamily office
source ↗More
- Type
- family office
- Notes
- Brin single-family office founded 2005, Palo Alto HQ; ~$100B AUM (2022 est.); CEO George Pavlov (since 2015), CIO Marie Young (since 2022); Singapore office opened late 2020. No EDGAR filer match found.
SMB Pacific 2021 Charitable Remainder Unitrusts I and IItrust
source ↗More
- Type
- trust
- Notes
- Each held 172,700 Alphabet Class B shares; Brin sole trustee (13G/A for 12/31/2025).
MDC Trust Itrust
source ↗More
- Type
- trust
- Notes
- Form 144 (2026-05-12) to sell 409,000 GOOGL Class A shares (~$157.7M) via Morgan Stanley; shares gifted by Brin in 2006.
Private deals
Terminated or relocated 15 California LLCs in Dec 2025 (seven converted to Nevada entities) ahead of proposed CA…Dec 2025
source ↗More
- In full
- Terminated or relocated 15 California LLCs in Dec 2025 (seven converted to Nevada entities) ahead of proposed CA billionaire tax
- Date
- 2025-12
Form 144: MDC Trust I proposed sale of 409,000 GOOGL Class A shares (~$157.7M)May 2026
source ↗Form 4: gifted 673,200 Class A (converted from Class B) and 673,200 Class C Alphabet sharesAug 2026
source ↗Form 4: gifted 437,500 Class A and 437,500 Class C Alphabet sharesFeb 2026
source ↗Gift of ~3.5M+ Alphabet shares (~$1.1B) to Catalyst4 (~$1B), Brin family foundation (~$90M), Michael J. Fox Foundation…Nov 2025
source ↗More
- In full
- Gift of ~3.5M+ Alphabet shares (~$1.1B) to Catalyst4 (~$1B), Brin family foundation (~$90M), Michael J. Fox Foundation (~$45M); followed ~$700M gift in May 2025
- Date
- 2025-11
Real estate
Crystal Bay, Lake Tahoe (Nevada side), ~5 acreslakefront estate (now listed primary… · $42M · Dec 2025
source ↗More
- Type
- lakefront estate (now listed primary residence)
- Price
- 42000000
- Date
- 2025-12-05
Malibu, CA (surf-access compound)residential compound · $49.7M · Dec 2025
source ↗Allison Island, Miami Beach, FLwaterfront mansion · $51M · Mar 2026
source ↗Point Dume, Malibu, CAbluff-top mansion · $35M · Jun 2023
source ↗Crystal Bay, Lake Tahoe (Nevada side) - 'Crystal Pointe' estate, ~5 acreslakefront estate (now listed primary… · $42M · Dec 2025
source ↗More
- Type
- lakefront estate (now listed primary residence)
- Price
- 42000000
- Date
- 2025-12-05
Trophies
Pathfinder 1 rigid helium airship (LTA Research), 124.5 m, first flew Oct 2024; flying over SF Bay in 2026
source ↗Superyacht Dragonfly (owned asset)
source ↗Boeing 767-200 and Alpha Jet held jointly with Larry Page (reported)
source ↗Legal & regulatory
US v. Google (search): liability ruling Aug 5, 2024; Sept 2, 2025 remedies barred exclusive contracts and required…
source ↗More
- In full
- US v. Google (search): liability ruling Aug 5, 2024; Sept 2, 2025 remedies barred exclusive contracts and required data sharing but no Chrome/Android divestiture; both sides appealing (2026)
US v. Google (ad tech): Apr 17, 2025 Judge Brinkema found illegal monopolies in publisher ad server/ad exchange; Sept…
source ↗More
- In full
- US v. Google (ad tech): Apr 17, 2025 Judge Brinkema found illegal monopolies in publisher ad server/ad exchange; Sept 2026 remedies imposed behavioral changes but no forced sale of AdX
California Proposition 40 (one-time 5% billionaire wealth tax) on Nov 2026 ballot; Fortune estimates >$13B potential…
source ↗More
- In full
- California Proposition 40 (one-time 5% billionaire wealth tax) on Nov 2026 ballot; Fortune estimates >$13B potential liability for Brin
Appointed to President's Council of Advisors on Science and Technology (PCAST), March 2026
source ↗May 2023 crash of Bayshore-owned De Havilland Twin Otter off Half Moon Bay (two fatalities)
source ↗Giving
Sergey Brin Family Foundation (2024 revenue ~$986M)EIN 47-2107200
source ↗Catalyst4 Inc (Palo Alto; founded by Brin 2021)EIN 87-3323607
source ↗Michael J. Fox Foundation / Parkinson's research (>$1B cumulative to Parkinson's)
source ↗Research gaps: Web-search budget exhausted mid-task; relied on fetched pages. Bayshore Global has no EDGAR filer/13F match. Current total voting % (~25%) seen only in search snippet, omitted. Details of other Miami homes (Fortune mentions ~$197M Miami portfolio incl. two other homes) unverified. Yacht/aircraft details from Wikipedia only. Pre-2023 Tahoe/Bay Area holdings not researched.
Prices via Finnhub · as of Sep 24, 2026 4:00 PM ET. For information only.
What to watch
California Prop 40 billionaire-tax vote; residency/LLC moves to Nevada and Florida may be testedNov 3, 2026
source ↗Appeals in US v. Google search case (DOJ and Google cross-appeals)
source ↗Follow-on to Sept 2026 ad tech remedies ruling (implementation, possible appeals)
source ↗Further Form 144 sales / share gifts by Brin-linked trusts (MDC Trust I, CRUTs)
source ↗Pathfinder 1 airship test flights around SF Bay
source ↗