John Brennan
American businessperson and board member, Chairman Emeritus and Senior Advisor of The Vanguard Group, Inc., director at American Express
About John Brennan
Born 1954. John Brennan is an American businessperson.
John J. Brennan (born 1954), also known as Jack Brennan, served as Chairman of The Vanguard Group from 1996 to 2009, and was Vanguard CEO from 1996 to 2008, when he was succeeded by William McNabb.
Career Brennan joined Vanguard in 1982. For many years he served as the company's president alongside John C. Bogle who was Vanguard's founder and CEO. When Bogle stepped down from his chairmanship in 1996, Brennan was his hand-picked successor.
He also was chairman of the Investment Company Institute, a trade organization representing mutual fund companies. He was an independent director of General Electric and was also the chairman of FINRA (Financial Industry Regulatory Authority).
Personal life Brennan grew up in Winchester, Massachusetts, and attended Dartmouth College where he was a member of Sigma Nu fraternity.
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Important facts
People in John Brennan's life
Named in this biography and alive at the same time
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Contemporaries
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Frequently asked questions
Who is John Brennan?
American businessperson and board member, Chairman Emeritus and Senior Advisor of The Vanguard Group, Inc., director at American Express
When was John Brennan born?
John Brennan was born in 1954.
What is John Brennan's occupation?
John Brennan is a businessperson.
What nationality is John Brennan?
John Brennan is American.
Sources & further reading
· DBpedia: John J. Brennan (businessman)
Cite this page
APA: Biography.guide. (2026). John Brennan. https://biography.guide/john-brennan-businessperson/
MLA: "John Brennan." Biography.guide, https://biography.guide/john-brennan-businessperson/.
Chicago: "John Brennan." Biography.guide. https://biography.guide/john-brennan-businessperson/.
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