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Sergey Brin

Google co-founder and Alphabet director; listed author on the Gemini and Gemini 2.5 technical reports

  • Member of the Board of Directors (Executive Committee), Alphabet21

Sergey Brin is one of Google's co-founders and has been a director since 1998, serving on the Executive Committee of Alphabet's board, according to Alphabet's 2026 proxy statement. The proxy lists Brin's earlier roles as Google's President and Chairman of the Board from 1998 to 2001, President, Technology from 2001 to 2011, Google's President from 2011 to 2015, and Alphabet's President from 2015 to 2019. Brin is listed among the authors of the 2023 report Gemini: A Family of Highly Capable Multimodal Models and of the 2025 Gemini 2.5 technical report.1234

Career

Sergey Brin co-founded Google and served as its President and Chairman of the Board from September 1998 to July 2001.1

Brin was Google's President, Technology from July 2001 to April 2011 and its President from May 2011 to October 2015, then Alphabet's President from October 2015 to December 2019. Brin has been a director since 1998, sits on the Executive Committee of Alphabet's board, and is listed on Alphabet's board of directors page.12

Gemini

Brin is listed among the authors of Gemini: A Family of Highly Capable Multimodal Models, the December 2023 report introducing Google's Gemini models, and of the July 2025 Gemini 2.5 technical report on reasoning, multimodality, long context and agentic capabilities.34

Work

Career timeline

  1. Sep 1998

    Became President and Chairman of the Board of Google, which Brin co-founded.1

  2. Jul 2001

    Became Google's President, Technology.1

  3. May 2011

    Became President of Google.1

  4. Oct 2015

    Became President of Alphabet, serving until December 2019.1

  5. Dec 19, 2023

    Listed among the authors of the first Gemini technical report.3

  6. Jul 7, 2025

    Listed among the authors of the Gemini 2.5 technical report.4

Other documented roles

Roles the sources document but that are not confirmed as current.

  • President, Alphabet1
  • President; earlier President, Technology, and President and Chairman of the Board, Google1

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References · reviewed Oct 21, 2026

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