W. Onnie Mayshak

Vice President
Phone: +1 617 419 7001


Onnie Mayshak is a vice president in Landmark’s investor relations group. He is primarily responsible for marketing, communications and business development.

Mr. Mayshak was recently senior vice president of institutional sales and investor relations with Brookwood Financial Partners. Previously, he was with Guggenheim Partners as the director-institutional sales.

Mr. Mayshak holds a BA in Environmental Science and Public Policy from Harvard University.