Forbes listed Sergey Brin’s net worth at $262.2 billion on August 25, 2026, fourth in the world. That is an estimate built from a share count and a stock price, not a disclosure. No filing states what Sergey Brin is worth, and trackers disagree by tens of billions.
Key facts about Sergey Brin’s net worth
| Reported net worth | About $262 billion (Forbes, August 25, 2026) |
|---|---|
| Full name | Sergey Mikhailovich Brin |
| Born | August 21, 1973, Moscow (age 53) |
| Primary income source | About 717 million Alphabet shares |
| College | University of Maryland (1993), Stanford M.S. (1995) |
| Marital status | Divorced twice, three children |
How Forbes gets to $262 billion for Sergey Brin
An August 11, 2026 Form 4 puts Brin’s direct holdings at 357.9 million Class B shares and 359.2 million Class C shares, roughly 717 million in total.
At the $337 Alphabet traded near in mid-January, that stake alone is worth about $242 billion. Alphabet’s market value stood at $4.13 trillion on August 27, 2026, so Brin owns close to 6% of the company.
The rest is guesswork. Celebrity Net Worth estimates Brin has sold about $10 billion of stock since the search company Brin and Larry Page started in 1998 went public in 2004, but where that cash sits is private.
Sergey Brin net worth, 2025 to 2026
Forbes estimates at four dated points, in billions of US dollars.
Sources: Forbes World’s Billionaires List (April 2025), Forbes reporting on November 25, 2025 and January 13, 2026, and the Forbes profile page on August 25, 2026. All figures are estimates that move with Alphabet’s share price, and the Bloomberg Billionaires Index publishes different numbers.
Why Sergey Brin’s net worth doubled in 2025
Alphabet stock rose 65% in 2025, its best year since 2009, on Gemini’s progress and cloud demand. Brin passed Larry Ellison on November 25, 2025 and Jeff Bezos on January 13, 2026, the day an Apple deal to run Siri on Gemini was reported.
Brin had a hand in that. After stepping down as Alphabet president on December 3, 2019, Brin returned in 2023 to work on Gemini and told staff in a February 26, 2025 memo that a 60-hour week is “the sweet spot of productivity.”
The $13 billion question: Sergey Brin and California’s Proposition 40
The biggest threat to the estimate is a ballot measure. Proposition 40, on the November 2026 ballot, would levy a one-time 5% tax on the roughly 200 billionaires living in California as of January 1, 2026.
At a $267 billion fortune, Brin’s bill would be about $13.3 billion. Brin has given $102 million to the Building a Better California committee fighting the measure, including a $20 million check filed in early August.
Brin’s own explanation: “I fled socialism with my family in 1979 and know the devastating, oppressive society it created.”
The paper trail suggests Brin is also preparing to lose. The New York Times reported that 15 Brin-linked LLCs, including one holding the Dragonfly superyacht, were closed or moved to Nevada in December 2025. In March 2026 Brin paid $51 million for a 9,700-square-foot house on Allison Island in Miami Beach.
What Proposition 40 would cost Sergey Brin, at scale
Estimated fortune, estimated tax bill, and campaign spending, drawn to the same scale.
Sources: Forbes profile (August 25, 2026), Fortune and TechCrunch reporting on August 10 and 11, 2026, and California campaign finance filings as cited there. The tax bill is a projection at roughly 5% of an estimated fortune, not an assessment.
Sergey Brin’s share sales and $2 billion in gifts
Brin sells small slices and gives away larger ones. A Form 144 filed May 12, 2026 covered 409,000 Class A shares worth about $157.7 million, following a $53 million sale of 172,000 shares on February 27, 2026.
On August 7, 2026 Brin converted 673,200 Class B shares and gifted 673,200 Class A and 673,200 Class C shares to unnamed recipients. A similar gift in May 2025 was worth about $700 million.
Forbes credits Brin with more than $2 billion donated to Parkinson’s research. Brin’s mother, Eugenia Brin, had the disease and died in 2024, and Brin carries a gene variant that raises the risk.
Sergey Brin’s age, marriages, and children
Brin turned 53 on August 21, 2026 and, per Forbes, still lives in Los Altos, California, despite the Miami purchase. Brin sits on the board of Google’s parent company and joined the President’s Council of Advisors on Science and Technology in 2026.
Brin married Anne Wojcicki in May 2007 and divorced in June 2015; the two have children Chloe and Benji. Brin married Nicole Shanahan on November 7, 2018, filed for divorce in 2022, and finalized it in 2023. Brin and Shanahan have a daughter, Echo.
Both divorces surface in Sergey Brin net worth Reddit threads, usually with the wrong assumption that Shanahan took half. Court filings reported by Gizmodo show Brin contested spousal support, and no settlement figure was made public.
Frequently asked questions about Sergey Brin’s net worth
How much is Sergey Brin worth in 2026?
Forbes put Sergey Brin’s net worth at $262.2 billion on August 25, 2026. About 717 million Alphabet shares make up nearly all of that, so the figure changes every trading day.
What was Sergey Brin’s net worth in 2025?
Forbes listed Sergey Brin at $125.8 billion on its April 2025 list and $245.3 billion by November 25, 2025, after Alphabet’s 65% rise that year.
What does Reddit say about Sergey Brin’s net worth?
Reddit threads on Sergey Brin’s net worth tend to split between people surprised Brin passed Jeff Bezos and people arguing the $100 million spent against Proposition 40 is a rounding error next to a $13 billion bill. Both are right on the arithmetic.
Where does Sergey Brin live now?
Forbes lists Los Altos, California as Sergey Brin’s residence. Brin bought a $51 million house on Allison Island in Miami Beach in March 2026, and residency on January 1, 2026 is what Proposition 40 turns on.
Is Sergey Brin married?
No. Sergey Brin divorced Anne Wojcicki in 2015 and Nicole Shanahan in 2023, and Forbes lists Brin as separated.
Is Sergey Brin still at Google?
Yes, as a board member and controlling shareholder. Sergey Brin came back in 2023 to work on Gemini and has no executive title.
