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Michael Brune

Sierra Club · United States

✓ Verified current role· as of 2026-09-22

Michael Brune is the CEO of Sierra Club. Brune is based in the United States.

Michael Brune is an American environmentalist. He became the youngest executive director of the Sierra Club at age 38. The board of directors hired him in January 2010, after Carl Pope stepped down. He held the position for 11 years.

Recent developments

AI summary of recent coverage

Recent coverage has focused on Michael Brune's launch of a climate investment fund following his departure from the Sierra Club. Brune's new venture, developed in partnership with Ripple cofounder Chris Larsen, aims to approach climate investing through a different model than traditional approaches. The news comes after Brune stepped down as Sierra Club executive director in 2021 amid organizational upheaval related to workplace culture and racial equity issues.

Summarized from the headlines below; see each source for the full story.

Our coverage

On CEOInsider

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Michael Brune: FAQ

What company does Michael Brune lead?
Michael Brune is CEO of Sierra Club.