Sergey Brin net worth is estimated at about $263.9 billion in late April 2026, based on Forbes’ real-time billionaire data. That number is not cash sitting in a bank account. It is an estimate built mostly from his large Alphabet stock ownership, plus reported share sales, dividends, investments, and charitable transfers.
Brin is best known as the co-founder of Google, the search company he started with Larry Page after they met at Stanford. Google later became part of Alphabet, one of the most valuable technology companies in the world. His wealth rose sharply from 2025 into 2026 as Alphabet shares climbed on strong search, cloud, AI, and advertising results.
This article explains Sergey Brin’s latest net worth, 2025 vs. 2026 change, income sources, business ownership, career timeline, family background, education, assets, rankings, comparisons, and why different wealth trackers may show different numbers.
Quick Answer
Sergey Brin is an American computer scientist, entrepreneur, and Google co-founder. His latest estimated net worth is about $263.9 billion as of April 28, 2026.
His main wealth source is Alphabet stock, especially his Class B voting shares and Class C shares. Estimates vary because Alphabet shares move daily, private investments are hard to value, and taxes, charitable gifts, and liquidity are not fully public.
Net Worth Snapshot Table
| Category | Detail |
|---|---|
| Full name | Sergey Mikhailovich Brin |
| Known as / nickname | Sergey Brin |
| Estimated latest net worth | About $263.9 billion |
| Estimated 2025 net worth | About $144 billion in spring 2025; reports later in 2025 moved much higher as Alphabet stock rallied |
| Change in dollars | About +$119.9 billion from the spring 2025 estimate to April 28, 2026 |
| Change in percentage | About +83.3% from the spring 2025 estimate |
| Main wealth source | Alphabet Inc. equity, mainly Google-related stock ownership |
| Country | United States |
| Industry | Technology, internet search, digital advertising, cloud, AI |
| Age | 52 |
| Birthday | August 21, 1973 |
| Birthplace | Moscow, Soviet Union, now Russia |
| Nationality | American |
| Last updated | April 28, 2026 |
| Confidence level | High for the main wealth source; medium for exact net worth |
| Reason for confidence level | Alphabet share ownership and public rankings are well documented, but real-time net worth changes with market prices and not every private investment, tax effect, or gift is public |
Basic Info
| Field | Detail |
|---|---|
| Full name | Sergey Mikhailovich Brin |
| Nickname | Sergey Brin |
| Age | 52 |
| Birthday | August 21, 1973 |
| Birthplace | Moscow, Soviet Union |
| Nationality | American |
| Profession | Computer scientist, entrepreneur, investor, board member |
| Known for | Co-founding Google with Larry Page |
| Main industry | Technology |
| Public status | Public business figure, Alphabet co-founder, board member, major shareholder |
Sergey Brin is one of the most important technology founders of the internet era. He helped turn Google from a Stanford research project into the world’s dominant search business and, later, into Alphabet, a company with major operations in search, YouTube, Android, cloud computing, AI, hardware, and “Other Bets” such as Waymo.
Family and Personal Life
Sergey Brin was born in Moscow to Mikhail Brin and Eugenia Brin. Public biographies describe his father as a mathematician and his mother as a researcher. His family left the Soviet Union when he was a child, a move often linked in public accounts to antisemitism and limits on opportunity at the time.
Brin has been married twice. His first marriage was to Anne Wojcicki, the co-founder of 23andMe. They later divorced. He later married Nicole Shanahan, an attorney and entrepreneur, and that marriage also ended in divorce. Public reports say Brin has children, but this article avoids unnecessary private details about them.
Brin is known for keeping a lower public profile than many other billionaires. He appears in official company records and philanthropy coverage, but he does not run a highly public personal brand.
Privacy note: Some family details are public because of biographies, company records, court reporting, and philanthropy coverage. Private addresses, children’s private lives, and unsupported personal claims are intentionally excluded.
Education
| School / Institution | Detail |
|---|---|
| Early schooling | Publicly available details are limited, but Brin’s early academic strength was in math and science |
| University of Maryland | Bachelor of Science with high honors in mathematics and computer science |
| Stanford University | Master’s degree in computer science |
| Ph.D. status | He was in Stanford’s Ph.D. program and later went on leave as Google grew |
| Academic recognition | National Science Foundation Graduate Fellowship; honorary MBA from Instituto de Empresa |
| Early interests | Search engines, data mining, information retrieval, and large-scale computing |
Brin’s education directly shaped his career. His work at Stanford focused on search, data, and information retrieval. That academic background helped create the system that became Google. The big idea was simple but powerful: web pages could be ranked by how other pages linked to them, making search results more useful.
Early Life and Background
Sergey Brin’s early life started far from Silicon Valley. He was born in Moscow in 1973 and moved to the United States with his family at age six. Public biographies describe the move as a major turning point. His parents were highly educated, and the family placed strong value on math, science, and learning.
Brin later studied at the University of Maryland, then Stanford. At Stanford, he met Larry Page. The two reportedly disagreed often at first, but their shared interest in organizing information led to a research project called BackRub. That project ranked web pages by links. It later became Google.
His first major career step was not a traditional corporate job. It was building a search engine from a research project. The major turning point came in 1998, when Google Inc. was formed with early investor backing. From there, Google grew from a garage startup into one of the most powerful companies in the world.
Career Timeline
| Year | Milestone | What happened | Net worth impact |
|---|---|---|---|
| 1973 | Birth | Sergey Brin was born in Moscow | No direct wealth impact |
| 1979 | Moved to the U.S. | Brin’s family emigrated when he was six | Created access to U.S. education and tech opportunities |
| 1993 | Stanford path begins | Brin entered graduate study in computer science | Put him in the network where Google began |
| 1995 | Met Larry Page | Page and Brin met at Stanford | Foundation of future Google partnership |
| 1996 | BackRub project | The early search research project began | Early intellectual base for Google |
| 1998 | Google founded | Google Inc. was formed | Major long-term wealth creation event |
| 2001 | Eric Schmidt joined leadership | Google professionalized management as it grew | Helped scale the company before IPO |
| 2004 | Google IPO | Google went public | Brin became a public-company billionaire |
| 2006 | YouTube acquisition | Google bought YouTube for $1.65 billion in stock | Strengthened Google’s future ad and video business |
| 2011 | Special projects role | Brin moved from president of technology to special projects | Shifted focus toward moonshot work |
| 2015 | Alphabet created | Google reorganized under Alphabet | Preserved Google while separating other long-term bets |
| 2019 | Stepped down as Alphabet president | Brin left the president role but stayed involved as co-founder, shareholder, and board member | Wealth remained tied to Alphabet stock |
| 2024 | Alphabet began paying dividends | Alphabet introduced a quarterly dividend | Added recurring cash income on top of stock wealth |
| 2025 | Alphabet stock surged | AI, cloud, search, and investor optimism lifted Alphabet shares | Brin’s paper wealth rose sharply |
| 2026 | Alphabet reached ultra-mega-cap territory | Alphabet crossed the $4 trillion market-cap level in early 2026 | Helped push Brin near the top of global wealth rankings |
Businesses and Ownership
Sergey Brin’s wealth is centered on Alphabet Inc., the parent company of Google. He is not currently CEO, but he remains a co-founder, board member, and controlling shareholder.
Confirmed and Publicly Known Business Links
| Business / Entity | Brin’s role | What is confirmed | Wealth impact |
|---|---|---|---|
| Co-founder | Founded with Larry Page in 1998 | Core source of wealth | |
| Alphabet Inc. | Co-founder, board member, major shareholder | Parent company of Google and other businesses | Main source of current net worth |
| Google Search | Co-created early search work with Page | Search became Alphabet’s biggest profit engine | Major indirect wealth source |
| Alphabet Class B shares | Major holder | Public filings show Brin owns a large block of Class B voting shares | Gives voting power and huge economic exposure |
| Alphabet Class C shares | Major holder | Bloomberg reports he owns about 360 million Class C shares | Large publicly traded share value |
| Sergey Brin Family Foundation | Philanthropic vehicle | Listed in Alphabet proxy materials and philanthropy reporting | Not a personal profit source |
| Catalyst4 | Philanthropic / nonprofit work | Reported recipient of a large Alphabet stock gift in 2025 | Reduces personal holdings but expands philanthropy |
| LTA Research | Backed by Brin | Public reporting links Brin to airship development | Private valuation is not fully public |
Equity Stakes
Public filings show Brin owns a large amount of Alphabet voting stock. Bloomberg’s billionaire profile says he owns both Class B and Class C shares, giving him an aggregate stake of about 6% of Alphabet. Alphabet’s 2025 proxy showed Brin with more than 362 million Class B shares and about 25.2% total voting power.
That ownership explains why a small move in Alphabet’s stock can change Sergey Brin’s net worth by billions of dollars.
Board Roles
Brin remains on Alphabet’s board. Alphabet’s official 2019 management-change announcement said Larry Page and Sergey Brin left their CEO and president roles but remained co-founders, shareholders, and board members.
What Is Estimated
The value of Brin’s Alphabet shares can be estimated from public market prices. But several items are harder to know exactly:
- Private investments
- Taxes paid after stock sales
- Charitable gifts
- Trust structures
- Personal debt, if any
- Private company valuations
- Real estate values not publicly confirmed
Because of that, his net worth should be read as a best public estimate, not an exact financial statement.
Net Worth 2025 vs Latest Net Worth
| Year / Date | Estimated net worth | Dollar change | Percentage change | Main reason for change |
|---|---|---|---|---|
| Spring 2025 | About $144 billion | — | — | Alphabet stock had not yet fully reflected the later 2025 AI and cloud rally |
| April 28, 2026 | About $263.9 billion | +$119.9 billion | +83.3% | Alphabet stock rose strongly as investors rewarded search, cloud, AI, and earnings growth |
Sergey Brin’s wealth increased mainly because Alphabet’s market value increased. He does not need to receive a large salary for his net worth to rise. When Alphabet shares climb, the value of his holdings climbs with them.
The 2025-to-2026 change was driven by several forces:
- Alphabet stock strength
Alphabet shares rose sharply in 2025, helped by stronger investor confidence in Google’s AI strategy, Google Cloud growth, and search resilience. - Google Search remained powerful
Alphabet’s 2025 annual report showed Google Search & other revenue rose from $198.1 billion in 2024 to $224.5 billion in 2025. - Google Cloud grew fast
Google Cloud revenue rose from $43.2 billion in 2024 to $58.7 billion in 2025. - AI changed investor expectations
Investors became more willing to value Alphabet as a long-term AI infrastructure and applications leader, not only as an advertising business. - Alphabet crossed $4 trillion in market value
In early 2026, Alphabet reached a $4 trillion market capitalization milestone, adding to Brin’s ranking momentum.
Wealth High and Low
| Measure | Estimate | Explanation |
|---|---|---|
| Highest known recent net worth | About $263.9 billion | Forbes listed Brin at this level on April 28, 2026 |
| Lowest recent public estimate | About $137 billion to $144 billion in spring 2025 reporting | Public reports in 2025 placed him much lower before Alphabet’s late-2025 surge |
| Main cause of high | Alphabet stock strength, AI optimism, cloud growth, search profits | Brin’s fortune is highly stock-linked |
| Main cause of low | Lower Alphabet valuation earlier in 2025, market concern about AI competition and regulation | Alphabet shares were materially lower before the rally |
Exact high and low figures are difficult because billionaire trackers update daily and use different methods. The broad pattern is clear: Brin’s wealth rose dramatically from 2025 into 2026 because Alphabet’s stock price and market value rose.
Income Sources
| Income source | Estimated value | Frequency | Reliability | Notes |
|---|---|---|---|---|
| Alphabet stock ownership | Roughly the vast majority of his $263.9 billion estimated net worth | Changes daily | High | Main wealth source; value moves with GOOG and GOOGL shares |
| Alphabet dividends | Potentially hundreds of millions per year before taxes, depending on eligible shares held | Quarterly | Medium | Alphabet declared a $0.21 quarterly dividend for Class A, Class B, and Class C shares in early 2026 |
| Past Alphabet / Google share sales | Bloomberg says more than $11 billion in shares sold since Google’s IPO | Irregular | High | Used by Bloomberg to estimate cash investments after taxes and giving |
| Cash and investments | Not fully public | Ongoing | Medium to low | Likely includes proceeds from stock sales and market investments |
| Private investments | Unknown | Irregular | Low | Some private stakes may exist, but values are not fully public |
| LTA Research / airship ventures | Unknown | Private | Low | Publicly linked to Brin, but valuation and economics are not transparent |
| Salary | Minimal or not a major source | Annual | High | Alphabet’s proxy listed Brin’s 2024 director compensation as $1 |
| Real estate | Not reliably public as a full portfolio | Long-term | Low | Avoid exact addresses and unsupported values |
| Endorsements / sponsorships | No major confirmed source | N/A | High | Brin is not known as an endorsement-driven public figure |
| Royalties / books / media | No major confirmed source | N/A | High | Not a meaningful public source of wealth |
| Crypto | Not publicly reliable | Unknown | Low | No strong public basis for including crypto as a major source |
| Sports contracts / touring / acting | None | N/A | High | Not applicable |
The important point: Brin’s income is not like a celebrity paycheck. His wealth is mostly ownership wealth. It rises and falls with Alphabet’s market value.
Property and Assets
Public reporting has connected Brin and other Google executives to aircraft and private aviation arrangements over the years. Public reports have also discussed high-end real estate linked to Brin, but exact addresses and private residential details are not necessary for a net worth article and are excluded here.
Publicly Discussed Asset Categories
| Asset category | Public detail | Estimated value |
|---|---|---|
| Alphabet stock | Largest known asset | Hundreds of billions in estimated value |
| Cash and market investments | Based partly on past share sales | Not fully public |
| Aircraft / aviation interests | Public reporting has linked Google founders to private aircraft arrangements | Not fully public |
| Philanthropic vehicles | Sergey Brin Family Foundation and Catalyst4 are publicly reported | Not personal spending assets |
| Real estate | Brin is associated with high-end property ownership in public reports | Full portfolio value not reliably public |
| Private technology projects | Includes airship-related interests | Private valuation unclear |
Because many billionaire assets are held through trusts, entities, or private vehicles, exact values are often unavailable. Any estimate that claims to know every home, aircraft, car, or private investment should be treated carefully.
Lifestyle
Sergey Brin’s public lifestyle is quieter than his wealth level might suggest. He is not known for constant luxury media coverage. His spending and interests appear more connected to technology, science, aviation, philanthropy, and long-term projects.
Cars
There is no reliable public evidence that cars are a major part of Brin’s wealth story. Any article listing a detailed luxury car collection without strong sources should be treated with caution.
Private Jets and Travel
Public reports have connected Brin and other Google founders to aircraft use and aviation arrangements. These reports fit his wealth level, but aircraft are not the main driver of his net worth. His Alphabet equity is.
Fashion and Luxury Purchases
Brin is not widely known for fashion, jewelry, or luxury-brand publicity. He has generally kept a lower personal profile.
Philanthropy
Brin’s philanthropy is significant. Public reporting has linked him to large donations for Parkinson’s research, climate-related work, health science, and nonprofit projects. In 2025, reports said he transferred hundreds of millions of dollars in Alphabet stock to philanthropic organizations, including Catalyst4, the Sergey Brin Family Foundation, and the Michael J. Fox Foundation.
Controversies and Legal Issues
Sergey Brin has not been the central public figure in most Alphabet legal disputes, but his wealth is tied to Alphabet, so major company legal risks matter.
Google Antitrust Cases
Google has faced major U.S. antitrust scrutiny. The Department of Justice said a federal court found Google maintained a search monopoly in violation of U.S. antitrust law. Remedies have focused on search distribution, default agreements, and competition.
For Brin, the financial impact is indirect. If a ruling or remedy hurts Alphabet’s profits, growth, or valuation, his net worth can fall. If investors believe the remedy is less severe than feared, Alphabet stock can rise.
Divorce Settlements
Brin’s divorces have been reported publicly, but many settlement details are private or sealed. It is not reliable to treat every media claim about settlement size as confirmed. Divorce can affect billionaire net worth, but the exact impact on Brin’s current fortune is not fully public.
Business Criticism
Google has faced public criticism over privacy, search dominance, advertising power, AI, and content moderation. Those issues matter because they can affect Alphabet’s reputation and regulation. But Brin’s personal net worth remains primarily driven by Alphabet share value.
Ranking
| Ranking type | Latest public context |
|---|---|
| Billionaire status | Yes, Sergey Brin is a billionaire and centibillionaire |
| World ranking | Forbes listed him at No. 4 in the world on April 28, 2026 |
| U.S. ranking | Among the richest people in the United States |
| Industry ranking | Among the richest technology founders in the world |
| Category | Internet search, digital advertising, AI, cloud, technology |
| Ranking source | Forbes real-time billionaire profile and related billionaire coverage |
| Date of ranking | April 28, 2026 |
Brin’s rank can change quickly. He has moved around the top five as Alphabet, Amazon, Oracle, Meta, Tesla, and other major technology stocks move.
Comparison With Similar People
| Person | Estimated net worth | Main source of wealth | Industry | Who is richer? | Reason |
|---|---|---|---|---|---|
| Larry Page | About $269 billion to $280 billion range in 2026 reporting | Alphabet / Google | Technology | Larry Page | Page owns a slightly larger Alphabet stake |
| Sergey Brin | About $263.9 billion | Alphabet / Google | Technology | — | Main subject |
| Jeff Bezos | Roughly $220 billion to $240 billion range in 2026 reporting | Amazon | E-commerce, cloud, space | Brin in late April 2026 | Alphabet’s rally pushed Brin above Bezos in some rankings |
| Mark Zuckerberg | Roughly low-to-mid $200 billion range in 2026 reporting | Meta Platforms | Social media, AI | Brin | Alphabet valuation was higher relative to Brin’s stake |
| Larry Ellison | Roughly low $200 billion range in 2026 reporting | Oracle | Enterprise software, cloud | Brin | Oracle shares fell from prior highs while Alphabet rose |
| Jensen Huang | Roughly $150 billion-plus range in 2026 reporting | Nvidia | Semiconductors, AI | Brin | Nvidia created huge wealth, but Brin’s Alphabet stake remains larger |
| Steve Ballmer | Roughly $120 billion-plus range in 2026 reporting | Microsoft | Software, investments | Brin | Brin’s Alphabet stake is worth more |
| Elon Musk | Hundreds of billions; Forbes listed him far above other billionaires in 2026 | Tesla, SpaceX, xAI | EVs, space, AI | Elon Musk | Musk’s private and public company stakes are larger in top rankings |
The closest comparison is Larry Page. Both built Google, both stepped back from daily leadership, both remain major Alphabet shareholders, and both have fortunes tied to the same stock.
Why Net Worth Estimates Differ
Sergey Brin net worth estimates differ for several reasons:
- Alphabet shares trade every market day
A small stock move can add or subtract billions. - Class B shares do not trade publicly
Brin’s Class B shares are usually valued by reference to publicly traded Alphabet shares. - Private assets are hard to value
Private investments, foundations, and private projects do not have daily market prices. - Debt is not always public
If a billionaire has private loans, they may not be visible in public rankings. - Taxes matter
Selling stock can create tax costs that reduce liquid wealth. - Charitable gifts reduce personal holdings
Brin has made large stock gifts. Trackers may update these at different times. - Divorce settlements may be private
Public reports do not always reveal exact financial terms. - Net worth is not cash
Brin cannot instantly turn all shares into cash without market, tax, and legal effects. - Different trackers use different models
Forbes and Bloomberg may treat private investments, share classes, and liquidity differently.
How We Estimated Net Worth
This estimate uses a transparent public-source method:
- Start with major billionaire rankings
Forbes’ real-time profile listed Sergey Brin at about $263.9 billion on April 28, 2026. - Check Bloomberg’s ownership explanation
Bloomberg says Brin’s fortune is mainly based on Alphabet shares, including Class B and Class C shares, and that he owns an aggregate stake of about 6%. - Review Alphabet proxy filings
Alphabet’s 2025 proxy listed Brin as a co-founder and director and showed more than 362 million Class B shares beneficially owned. - Review Alphabet business results
Alphabet’s 2025 annual report showed total revenue of $402.8 billion, Google Services revenue of $342.7 billion, and Google Cloud revenue of $58.7 billion. - Account for stock movement
Alphabet’s share price and market capitalization are the main reasons Brin’s wealth rose. - Consider share sales and giving
Bloomberg reports more than $11 billion in share sales since Google’s IPO. Public reports also show large charitable stock gifts. - Avoid exact private assumptions
No exact value is assigned to private homes, private investments, or personal assets unless reliable public data supports it.
This method does not claim exact accuracy. It is an estimate based on publicly available ownership, public-company value, and credible wealth trackers.
Latest Updates
| Update type | Latest available information |
|---|---|
| Most recent wealth update | Forbes listed Brin at about $263.9 billion on April 28, 2026 |
| Most recent business update | Alphabet reported 2025 revenue of $402.8 billion, with strong Google Services and Google Cloud growth |
| Most recent ranking update | Forbes placed Brin at No. 4 globally in its real-time billionaire profile on April 28, 2026 |
| Most recent career update | Brin remains an Alphabet co-founder, board member, and controlling shareholder |
| Most recent legal / market context | Google continues to face antitrust remedies and regulatory scrutiny, which can affect Alphabet valuation |
| Date of latest available information | April 28, 2026 |
FAQ
What is Sergey Brin’s net worth?
Sergey Brin’s net worth is estimated at about $263.9 billion as of April 28, 2026. The figure changes with Alphabet’s stock price.
How did Sergey Brin get rich?
He got rich by co-founding Google with Larry Page and keeping a large ownership stake as Google grew into Alphabet.
What is Sergey Brin’s salary?
Salary is not a meaningful part of his wealth. Alphabet’s proxy listed his 2024 director compensation as $1.
How much does Sergey Brin make per year?
There is no exact public annual income number. His paper wealth can rise or fall by tens of billions in a year depending on Alphabet stock. He may also receive large dividend income from Alphabet shares.
Is Sergey Brin a billionaire?
Yes. He is not only a billionaire but a centibillionaire, meaning his estimated net worth is above $100 billion.
What businesses does Sergey Brin own?
His main business ownership is Alphabet stock. He co-founded Google and Alphabet and remains an Alphabet board member and major shareholder.
What is Sergey Brin’s biggest income source?
His biggest wealth source is Alphabet equity. Most of his net worth comes from shares connected to Google’s parent company.
How much was Sergey Brin worth in 2025?
Public estimates varied during 2025. Spring 2025 reports placed him around $137 billion to $144 billion, while later 2025 estimates rose sharply as Alphabet stock rallied.
Why do net worth estimates differ?
They differ because Alphabet stock changes daily, Brin holds different share classes, private assets are hard to value, and taxes, giving, debt, and divorce details are not fully public.
Who is richer, Sergey Brin or Larry Page?
Larry Page is usually estimated to be slightly richer because his Alphabet stake is larger.
Does Sergey Brin own real estate?
Yes, public reports have linked him to high-end real estate, but exact private addresses and full portfolio values are not necessary or reliably complete.
What is Sergey Brin’s latest ranking?
Forbes listed Sergey Brin at No. 4 in the world on April 28, 2026.
Conclusion
Sergey Brin net worth is estimated at about $263.9 billion in late April 2026, making him one of the richest people in the world. His fortune comes mainly from Alphabet, the parent company of Google, rather than salary, endorsements, or celebrity-style income.
The biggest reason his wealth rose from 2025 into 2026 was Alphabet’s stock surge. Strong search revenue, Google Cloud growth, AI optimism, and Alphabet’s $4 trillion market-value milestone all helped lift his estimated fortune. Still, the number is not exact cash. It is a market-based estimate that can change quickly with Alphabet shares, taxes, charitable gifts, legal risks, and private assets.
Brin’s story remains one of the clearest examples of how founder equity in a world-changing technology company can create extraordinary long-term wealth.
Source Notes
| Source name | Page title | What it was used for | Link |
|---|---|---|---|
| Forbes | Sergey Brin profile | Latest real-time net worth, ranking, biography notes, source of wealth | |
| Bloomberg | Bloomberg Billionaires Index: Sergey Brin | Ownership method, Alphabet stake, share sales, biography milestones | |
| Alphabet / SEC | Alphabet 2025 Proxy Statement | Board role, Class B share ownership, voting power, compensation | |
| Google Research | Sergey Brin profile | Education, Stanford background, research interests | |
| From the garage to the Googleplex | Google origin story, Stanford meeting, BackRub, founding details | ||
| Alphabet Investor Relations | Alphabet management change | 2019 transition from president role and continued board/shareholder involvement | |
| Alphabet / SEC | Alphabet 2025 Form 10-K | 2025 revenue, Google Search, Google Cloud, segment data, business risks | |
| Alphabet Investor Relations | Q4 and fiscal year 2025 results | Latest annual-results release page and date | |
| Forbes Australia / Forbes syndicated coverage | Sergey Brin becomes world’s third-richest as Alphabet soars | 2026 ranking movement, Alphabet $4 trillion milestone, 2025 stock surge context | |
| Business Insider | Sergey Brin stock gift coverage | 2025 stock gift, philanthropy context, spring 2025 wealth estimate | |
| Forbes / Forbes Australia | Charitable gift reporting | 2025 donation allocation to Catalyst4, Sergey Brin Family Foundation, and Michael J. Fox Foundation | |
| Britannica Money | Sergey Brin biography | Career timeline, Alphabet reorganization, YouTube acquisition, Google China context | |
| U.S. Department of Justice | Department of Justice wins significant remedies against Google | Antitrust context and remedies background | |
| Alphabet earnings release PDF | Q4 2025 dividend declaration | Quarterly dividend amount and eligible share classes | |
| Web finance data | Alphabet Inc. market price and market cap | April 2026 Alphabet market-price context |
