Clara serves as CEO of Tumml, building the organization's national presence. Prior to founding Tumml, she worked in real estate development – at real estate tech startup Fundrise, as well as at AECOM, GVA Advantis, and Monument Realty. Clara earned her MBA from MIT Sloan and her BA from NYU. She is a member of the MIT Sloan Alumni Board. In January 2014, Forbes listed her as one of its “30 Under 30” for Social Entrepreneurship.

Clara serves as CEO of Tumml, building the organization's national presence. Prior to founding Tumml, she worked in real estate development at real estate tech startup Fundrise, as well as at AECOM, GVA Advantis, and Monument Realty. Clara earned her MBA from MIT Sloan and her BA from NYU. She is a member of the MIT Sloan Alumni Board. In January 2014, Forbes listed her as one of its “30 Under 30” for Social Entrepreneurship.

Clara Brenner 
CEO and Co-Founder

Tom is Director of Sales Training at Yelp, the company that connects people to great local businesses, where he manages a team of approximately 100 salespeople. He has over ten years of local sales and management experience, first at The Boylston Group and C. Bridges Associates, and then at Yelp, where he began as an Account Executive. In his free time, Tom writes fiction and poetry – he was awarded Stanford’s Urmy/Hardy Prize in Poetry in 2006. Tom earned his BA from Stanford University.

Tom is Director of Sales Training at Yelp, the company that connects people to great local businesses, where he manages a team of approximately 100 salespeople. He has over ten years of local sales and management experience, first at The Boylston Group and C. Bridges Associates, and then at Yelp, where he began as an Account Executive. In his free time, Tom writes fiction and poetry – he was awarded Stanford’s Urmy/Hardy Prize in Poetry in 2006. Tom earned his BA from Stanford University.

Tom Feulner
Board Member

Molly is the Global Head of Civic Partnerships at Airbnb. In this role, she manages public-private partnerships with various municipal government agencies, non-profits, and tourism bureaus throughout the world. Before Airbnb, Molly consulted with governments on sustainable tourism development and conducted research with the UNESCO World Heritage Center. She currently serves on the board of SPUR. Molly earned her Masters in Urban Planning from Harvard University and her BA from Dartmouth College.

Molly is the Global Head of Civic Partnerships at Airbnb. In this role, she manages public-private partnerships with various municipal government agencies, non-profits, and tourism bureaus throughout the world. Before Airbnb, Molly consulted with governments on sustainable tourism development and conducted research with the UNESCO World Heritage Center. She currently serves on the board of SPUR. Molly earned her Masters in Urban Planning from Harvard University and her BA from Dartmouth College.

Molly Turner
Board Member

Julie serves as President of Tumml, managing operations and working closely with the organization's portfolio companies. Prior to founding Tumml, she worked in polling and political consulting at Tulchin Research and Greenberg Quinlan Rosner Research. Julie earned her MBA from MIT Sloan and her BA from Stanford. Her work in urban innovation has been featured in CNN, Forbes, The San Francisco Chronicle, and smart city conferences around the globe.

Julie serves as President of Tumml, managing operations and working closely with the organization's portfolio companies. Prior to founding Tumml, she worked in polling and political consulting at Tulchin Research and Greenberg Quinlan Rosner Research. Julie earned her MBA from MIT Sloan and her BA from Stanford. Her work in urban innovation has been featured in CNN, Forbes, The San Francisco Chronicle, and smart city conferences around the globe.

Julie Lein
President and Co-Founder

Chris is President of Platinum Advisors, a public affairs firm representing companies like Airbnb and Zipcar. He served as Finance Director of Gavin Newsom’s first mayoral campaign and Chairman of his re-election and inaugural committees. Chris serves on the Board of the Municipal Fiscal Advisory Committee, the SF Host Committee, and Lycée Français de San Francisco. He is also a Founding Trustee of the Laborers’ Union Community Service and Training Foundation. He served in the US Army and earned his BA from UCLA.

Chris is President of Platinum Advisors, a public affairs firm representing companies like Airbnb and Zipcar. He served as Finance Director of Gavin Newsom’s first mayoral campaign and Chairman of his re-election and inaugural committees. Chris serves on the Board of the Municipal Fiscal Advisory Committee, the SF Host Committee, and Lycée Français de San Francisco. He is also a Founding Trustee of the Laborers’ Union Community Service and Training Foundation. He served in the US Army and earned his BA from UCLA.

Chris Gruwell
Board Member

Mavis is Chief Administrative Officer and General Counsel at Nexenta Systems, a leader in Software-Defined Storage. Previously, she served as Partner at the law firms Nixon Peabody, Cooley, and the Heller Ehrman/Venture Law Group, with an emphasis on start-up law. Mavis also worked as a Special Investigator for the California State Legislature Auditor General's Office. She earned her JD from the UC Hastings College of the Law, her MBA from UC Irvine, and her BA from UC Davis.

Mavis is Chief Administrative Officer and General Counsel at Nexenta Systems, a leader in Software-Defined Storage. Previously, she served as Partner at the law firms Nixon Peabody, Cooley, and the Heller Ehrman/Venture Law Group, with an emphasis on start-up law. Mavis also worked as a Special Investigator for the California State Legislature Auditor General's Office. She earned her JD from the UC Hastings College of the Law, her MBA from UC Irvine, and her BA from UC Davis.

Mavis Yee
Board Member

May is responsible for special projects, as well as strategic support for Tumml's cohort companies. After practicing as a lawyer, May worked in social impact and startup consulting. She earned her MPP from the Harvard Kennedy School of Government, and her Bachelor of Economics and Bachelor of Laws from the University of Sydney. May is also an Australian Sir John Monash Scholar and a Gleitsman Leadership Fellow at Harvard's Center for Public Leadership.

May is responsible for special projects, as well as strategic support for Tumml's cohort companies. After practicing as a lawyer, May worked in social impact and startup consulting. She earned her MPP from the Harvard Kennedy School of Government, and her Bachelor of Economics and Bachelor of Laws from the University of Sydney. May is also an Australian Sir John Monash Scholar and a Gleitsman Leadership Fellow at Harvard's Center for Public Leadership.

May Samali
Resident Advisor

Tony is a Vice President with the Blackstone Charitable Foundation, where he has been involved in the implementation of the Foundation's Entrepreneurship Initiative. He also developed the firm’s inaugural community service and volunteer program. Previously, Tony worked at the Lower Manhattan Development Corporation, managing a portfolio of grants to non-profits and city agencies. He received his BA in Urban Studies and Geography from San Francisco State University and his MS in Urban Planning from Columbia.

Tony is a Vice President with the Blackstone Charitable Foundation, where he has been involved in the implementation of the Foundation's Entrepreneurship Initiative. He also developed the firm’s inaugural community service and volunteer program. Previously, Tony worked at the Lower Manhattan Development Corporation, managing a portfolio of grants to non-profits and city agencies. He received his BA in Urban Studies and Geography from San Francisco State University and his MS in Urban Planning from Columbia.

Tony Tolentino
Board Member