Board of Directors

David Collins, Chair, is a risk management and treasury professional who works for a life science equipment manufacturer in Palo Alto. David holds a BA from the University of Georgia and an MBA from Rice University. Having grown up in Montana, David enjoys the outdoors; his hobbies include skiing, gardening, and biking. David relocated to California in 2006 and now resides in Palo Alto.

Sally O’Neil, Vice Chair, is Director of Industrial Contracts at Stanford University. A lawyer and former journalist, Sally holds an MJ from the University California, Berkeley, a JD from Stanford University, and an AA from Oberlin College. Sally is a Palo Alto resident and longtime Canopy volunteer. Gardening, traveling, reading and hanging out with her grandkids are her favorite activities.

Marilyn Keller, Secretary, was formerly a biologist working on health, environmental, and safety issues associated with utilities at PG&E. She holds a BS in Biology, and in Applied Earth Sciences, and an MS in Environmental Earth Sciences, all from Stanford University. Marilyn now devotes much of her time to working in the community. In addition to joining the Canopy board in 2011, Marilyn served on the The City of Palo Alto Utilities Advisory Commission from 2005 to 2012, and she is an active member of the Palo Alto Unified School District Sustainable Schools Committee. Marilyn lives in Palo Alto with her husband, Jeff, and her two wonderful daughters (also Canopy volunteers!).

Beth Lim, Treasurer, is a finance and program management professional. She is currently the Finance Director at Planet Granite. Beth holds a BS in Chemical Engineering from Cornell University and an MBA from New York University. Beth came to Canopy via her former work as Director of Practice Development for CLASS Consulting Group. In addition to her work as a Canopy Board member and long-time volunteer, Beth volunteers as a mentor with Girl Ventures in San Francisco. She spends her spare time rock climbing, mountain biking, hiking, and generally enjoying the great outdoors. Beth is a resident of San Mateo.

Leila Abu-Sharr is a Partner at Andreessen Horowitz, and a Mountain View resident. Previously, she worked at several Bay Area startups, including World Centric, a manufacturer of compostable foodservice products. Leila has been volunteering for Canopy since moving to the Bay Area in 2012 and joined the Board in summer of 2015. Leila holds a BA in French from the University of Southern California, and originally hails from the DC area. She now lives in Mountain View. In her spare time, Leila enjoys running, swimming, yoga, and of course, caring for trees!

Marty Deggeller is a retired Aerospace manager who has been a Canopy volunteer since 1997. He has previously served two six-year terms on the Canopy Board and was Board Chair for four years. He grew up in the forests of Washington state and has had a lifelong affinity to trees including several summer jobs in the forest products industry, and early work with International Paper Company. Marty holds a BS in Industrial Engineering from Stanford University, is a long-time Palo Alto resident, and a member of the Palo Alto Kiwanis Club.

Kate Disney is on the engineering faculty at Mission College in Santa Clara and Cabrillo College in Aptos. Kate holds a BS and MS in electrical Engineering from the University California, Davis, and the University California, Santa Barbara, respectively. Kate joined the Canopy Board in summer of 2015. Previously, she served eight years on the Los Altos Planning Commission where she continuously advocated for canopy-producing street trees. Kate is a bay area native, and enjoys road trips and camping with her family.

Geoff Paulsen is recently retired from the Park Service. Geoff’s childhood on a Palo Alto ranch next to Foothills Park gave him a deep love of the outdoors. Over the course of his career, he worked as a park ranger, open space planner, and public health manager. He has managed his family’s 380-acre forest in Mendocino County for 26 years. Geoff is Vice-Chair of the Cupertino Parks and Recreation Commission and on the Board of Friends of Stevens Creek Trail. He enjoys prescribed burning, hiking, bicycling, writing, history, church leadership, and tinkering with old Mercedes cars. He and his wife Janine, a school nurse, have four adult children. Geoff holds a BS in Natural Resources Planning and Interpretation, and an MPA from the University of San Francisco.

Susan Rosenberg, Canopy co-founder, grew up in a small town in the Salinas Valley that boasted more oak trees than people. She has been a Palo Alto resident since 1984, was co-chair for the Trees for El Camino Project, and has served on the Palo Alto Storm Drain Oversight Committee since 2006. Susan holds a BS in Psychology from Santa Clara University, and attended Conway School of Landscape Design. She also built and flew a Christen Eagle biplane. .

Sesha Srinivasachari has over 18 years of experience in the Biotechnology industry with increasing responsibilities in the areas of Technology Transfer, GMP Manufacturing of Biologics, Supply Chain Management, Project Management, and Information Technology. He currently works at Genentech, Inc., as Senior Principal Site Manager. Sesha holds an MBA from the Haas School of Business, University of California, Berkeley, and a BS from Thiagarajar College of Engineering, India. Sesha is a resident of Palo Alto. He joined the Canopy board in summer of 2015. Sesha enjoys the outdoors and loves gardening and playing tennis with his kids.

Wen Shu Tang is a software engineer working in a technology startup company in Palo Alto. Previously, he was a software engineer in Cisco Systems for four years. He volunteered as a project lead in a nonprofit consulting organization where he helped several bay area organizations, including Canopy, achieve financial sustainability. Wen Shu holds an MS in Electrical and Computer Engineering from Carnegie Mellon University. In his spare time, he enjoys a wide range of activities from tennis, running, biking, and traveling, to reading and learning about biodiversity and environmental sustainability. In the summer time, he enjoys hiking and exploring the high Sierras of California. Wen Shu is a resident of San Francisco.

“Canopy meshes strategic vision and planning, technical know-how, volunteer and community partnering, educational outreach, and STILL manages to plant and care for thousands of trees on our streets and neighborhoods.”

~ Susan Rosenberg,
Canopy Co-Founder and Former Board Chair