and chapters further underscored organizational unrest. In July 2025, Jealous took a leave of absence from his role at the Sierra Club. On August 11, 2025, the Sierra Club board "unanimously voted to terminate Mr. Jealous' employment with the Sierra Club for cause following extensive evaluation of his conduct." In September 2025, Loren Blackford was named as the group's new executive director.

The Sierra Club is organized on both a national and state level with chapters named for the 50 states and two U.S. territories (Puerto Rico and