Senior Team

Senior Management Team

Core Senior Management Team

Sherilyn Headshot CroppedSherilyn Adams
Executive Director

For nearly 30 years, Sherilyn Adams has dedicated her career to the nonprofit sector, focusing on issues of child abuse and neglect, family violence, mental health, substance abuse, and homelessness. The first member of her family to attend college, Sherilyn’s early life was touched by violence, mental illness, and substance abuse. Despite these early challenges, the presence of positive adult role models and mentors put her on a pathway to college and career success. This personal history is part of what drives her to be a catalyst for change in the lives of at-risk populations.

Before coming to Larkin Street Youth Services in 2003, Sherilyn’s professional career spanned a variety of nonprofits, including child sexual abuse treatment, domestic violence shelter, adolescent outpatient programs, and residential treatment for adults. She worked for family and probate court and served as both a domestic violence and rape crisis counselor. Addressing the impacts of violence and trauma is a consistent theme throughout her career, and the diversity of venues through which she’s done this work offers a unique perspective on programs, systems, and services. Sherilyn’s experience enables her to attack entrenched problems from all angles, and her commitment to evidence-based, replicable service models is helping elevate the field.

Sherilyn’s accomplishments are considerable. In Sacramento, she launched a comprehensive outpatient treatment program for pregnant and parenting women with children under age 5, as well as a child abuse prevention program in seven school districts. In San Francisco, she helped expand community-based housing and supportive services for dually- and triply-diagnosed adults. At Larkin Street, she has led the agency through tremendous growth, nearly tripling the number of housing beds for youth over the past ten years, and putting Larkin Street at the vanguard of the field for its innovative multi-service model to resolve youth homelessness. The accolades Sherilyn has collected over the years are a testament to her impact on the field. Locally, she has been celebrated as one of the Bay Area’s Most Admired CEOs and Most Influential Women in Business. In 2012, the White House honored her as a “Champion for Change in the Fight Against Youth Homelessness.” In 2015, Mayor Lee honored Sherilyn as one of the courageous leaders changing the lives of San Franciscans.

KarenFrost 6.15Karen S. Frost, CPA, CGMA
Chief Financial Officer

Karen Frost brings more than 30 years of experience in the fields of finance and grants management to Larkin Street. Following her graduation from Wittenberg University in 1984, Karen joined the accounting firm of Touch-Ross and soon developed a passion for working with not-for-profit groups. Since 1994 she has focused her talents to provide support for programs ranging from nutrition and health issues to independent global communications, as well as teaching not-for-profit accounting worldwide. Karen is a member of both the American Institute of Certified Public Accountants and the California Society of Certified Public Accountants. Karen’s commitment to youth runs deep. She has studied family therapy, spent time as a church youth director, and with her husband was co-creator of Agape Clowns, a youth clown troupe. “Clowning provides anonymity and a safe means of expression for those who find it hard to speak out in everyday life.”

Samara-profile-pic-LISamara Dun
Chief Development Officer

Samara joined Larkin Street as the Chief Development Officer in 2016, bringing a strong background in the nonprofit sector and deep commitment to Bay Area communities. Samara’s inspiration for the mission of Larkin Street Youth Services is her belief that every young person deserves the opportunity to have stable housing, a solid career path, health and well-being. Prior to joining Larkin Street, Samara was the Director of Development at Ploughshares Fund, where she provided strategic fundraising leadership to raise over $40 million to support initiatives to reduce the global threat from nuclear weapons. Before joining Ploughshares Fund, Samara worked for the Golden Gate National Parks Conservancy and Friends of the Earth pioneering online fundraising systems, increasing membership participation and developing unique fundraising events. Samara has a degree in Cultural Anthropology from the University of California, Santa Cruz. In her spare time, you’ll find her volunteering in West Marin at a locally-founded organization that provides direct services to seniors and others in urgent need of support in rural communities. Or you’ll see her riding her bicycle on Bay Area mountain trails and in the new bike lanes in San Francisco.

Martha Mar headshotMartha Mar
Chief of Programs

Martha joined Larkin Street in October 2005 and since then she’s held several direct service and management roles.  In 2009, as the Manager of Education and Training she increased post-secondary counseling and enrollment for Larkin Street youth, and focused on integrating educational programming throughout the Larkin Street continuum. In 2013, Martha was promoted from Program Manager to Associate Director, in recognition of her skill level and her intensive participation in Larkin Street’s strategic planning process and implementation of key education initiatives that arose from that plan. In 2014, she became Director of Larkin Street Academy and provided senior leadership to all education, workforce development, and training services. Prior to her responsibilities at Larkin Street, Martha worked for the Digital Learning Commons, a nonprofit organization that provided online educational tools to students and educators across Washington State. Martha received a BS in engineering from the University of Washington and brings her strong analytical, problem-solving and team skills to Larkin Street Youth Services.

Extended Senior Management Team

Dan Barton, Director of Human Resources
Julie Frank, Director of Behavioral Health
* Derrick Hayes, Director of Programs
Ilsa Lund, Senior Director of Operations
Mary Kate Bacalao, Director of Public Funding
Angie Miot-Nudel, Director of Quality Client Care
Haley Mousseau, Director of Research & Evaluation
Ron Piccinni, Director of Information Technology
Jay Robertson, Director of Facilities and Housing
Graham Thomas, Program Director
Cynthia Villalon, Controller

* In loving memory

View the biographical sketches of the Senior Management Team.