About Us

Marin Group Leadership

2026 Executive Committee Officers

Chair Holli Thier
Secretary Jenny Silva
Treasurer Chance Cutrano

Open Positions on the Executive Committee

We currently have one open position on our ExCom
and are looking for enthusiastic leaders! 
Please email sampenrose@gmail.com 
if you’d like to be considered for an appointment to our ExCom board.

Also, every year there is an ELECTION starting in June
for active members to become ExCom Board members. 
For information, calendar, and candidate forms,
please visit the Chapter Page

2024 POSITIONS

Political Committee
Chair: Sam Ruben
Alternate: Jack Noble

SF Bay Chapter ExCom Rep:
Main: Jenny Silva
Alternate: Bryan Shiles, Nate McKitterick

COMMITTEES

Political Committee

The Sierra Club Marin Group Executive Committee has a very high standard for its political endorsements, including the candidate’s proven commitment to environmental leadership and record on issues. The Sierra Club requires a 2/3 majority vote of the Sierra Club Marin Group Executive Committee and approval by the Sierra Club Bay Chapter Political Committee for an endorsement.  Local candidates seeking an endorsement completed a detailed questionnaire and an interview.

Meeting Schedule

Schedule for regularly scheduled meetings for the Sierra Club Marin Group

Leader Resources

Resources for Bay Chapter volunteer leaders and others who are interested.