Gary Siepser to Lead Rockland Federation as New Chief Executive Officer

The Jewish Federation of Rockland County announces the appointment of a new Chief Executive Officer, Gary Siepser, who will commence his leadership of the Rockland Federation on January 4, 2016. 

Siepser has held executive positions at Federations across the U.S. and Canada for the past twenty five years. Most recently he served as Chief Development Officer at the Jewish Federation of Northern New Jersey and prior to that role, Siepser was the Director of Donor Development at UJA Federation of New York.

Some of Seipser’s specific accomplishments in the Jewish philanthropic sector include launching successful annual campaigns from $3 to $10 million, stewarding major gift donors and securing capital gifts in excess of $1 million.

According to Andrea Weinberger, President of the Jewish Federation of Rockland, “Gary’s lifelong Federation career gives him the perfect blend of experiences to take our Federation to the next level. He has a track record of success in driving growth and revenue and we’re confident he will help us build our community.”

Siepser, who will report to Weinberger, can be reached after January 4 at the Rockland Federation offices at 845-362-4200, ext. 133. Diane Sloyer, who served as Executive Director of the Jewish Federation of Rockland County for over seven years, leaves on December 31, 2015 to serve as Director of Development, Campus Advancement at Hillel International.

About The Jewish Federation of Rockland County

The Jewish Federation of Rockland leads efforts that strengthen Jewish life and meet the critical needs of the Jewish community in Rockland County, Israel, and around the world. As a member of Jewish Federations of North America, we are part of a network of 151 Jewish Federations across the continent. The Jewish Federation of Rockland County is a non-profit 501 (c) (3) organization with offices at 450 West Nyack Road, West Nyack, NY. Learn more about the Jewish Federation of Rockland County at


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