SEEDS employs a highly-skilled team of full-time and part-time conflict transformation professionals.


Read more about our staff below and on our practitioner page!

Core Staff

AddieRose Mayer

Executive Director

AddieRose Mayer is the Executive Director of SEEDS. She is a dynamic, process-driven, strategic leader with a commitment to increasing social impact in the public, private and non-profit sectors. AddieRose had more than 15 years experience leading and facilitating teams to have brave communication across differences. As a practiced strategic thinker, AddieRose supports individuals, communities and institutions as they lean into discomfort to solve challenging social issues. As a leader and practitioner, AddieRose draws on principles of adult learning, leadership development, human-centered design, and social change. She holds a Bachelor's degree in Political Science and a Master’s in Public Health.

An East Coaster in humor and a West Coaster in style, AddieRose lived in New England until moving to the Bay Area in 2010. AddieRose has a passion for cooking and sharing food, spending time in the woods, and connecting with others. AddieRose is proud to be a community leader of the purpose driven community: Thrive East Bay.

Sara Cantor

Director of Operations

Sara provides logistical support for the public trainings and group facilitations at SEEDS. She comes to the office after years working with the Bay Area Transformative Justice Collective, supporting their training program. She's particularly excited about making mediation/conflict resolution skills accessible to a wider community, as it supports her dreams for a world where our responses to violence do not cause more harm. 


Sara also works as a childcare provider, tutor, and freelance financial coach. In the rare moments that she's not working, she likes talking about astrology, making new friends at the dog park, and kayaking on the Russian River.

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Dr. Sherry
Congrave Wilson


Sherry Congrave Wilson is the Director of School Services at SEEDS. Her main role is to support schools and youth serving organizations to be restorative  in service of students, their families and their communities.

She started her career as a high school Social Studies teacher in San Diego and San Lorenzo, California. She then shifted her focus to nonprofit management while earning a Masters in Educational Equity and Social Justice at San Francisco State University. She eventually continued her graduate studies and earned a doctorate in Educational Equity and an administrative credential at Mills College. She has conducted domestic and global educational research in the U.S., China, Japan and Cameroon highlighting  issues around equity, racial identity development and arts based education.

In her free time, Sherry enjoys collecting books, cooking, camping, art, traveling, roller skating  and going on urban hikes with her miniature pinscher, Zala. 

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Kusum Crimmel

Senior Practitioner - School Services

Kusum Crimmel’s work is to inspire people to live more deeply and firmly into accountability and integrity, thereby accessing higher levels of joy and embodied love.  She is a facilitator of transformational change and creates space for truth, (re)conciliation, and healing to reclaim our humanity and the humanity of others.   She has spent nearly two decades working with teenagers; eleven of those years at Oakland Tech High School where she built up a vibrant and highly acclaimed, peer-based Restorative Justice program.  She is an LCSW, has 10 years of rape-crisis counseling experience and more than 8 plus years of training with Generative Somatics, expanding her understanding of trauma and the impact of interpersonal, generational and socially pervasive trauma (racism, sexism, homophobia, classism, etc.).  She is a co-creator of FacingIn, a restorative justice consulting business, and recently launched another business, Dissecting Whiteness, which offers services to people and organizations invested in dismantling whiteness and white supremacy and the healing of those impacted by racialized harm and conflict. 


She is a single parent to a fourteen-year old singer, dancer and budding actress.  She is auntie to a bright and courageous four-year old, and an ongoing mentor to countless young people who she has connected with over the last seventeen years. Dance is her favorite form of therapy and she loves to laugh until her belly hurts. 

Barbara Lipson

Director of Organizational Effectiveness Services

Barbara Lipson is the Organizational Effectiveness Services (OES) Director for SEEDS. As a member of senior leadership, she supports the strategic direction of the agency, supports programs and works directly with clients.

A dynamic, results-oriented professional, Barbara is experienced in communication administration and program development within non-profit setting. She exemplifies comprehensive knowledge in all aspects of effective communication and emotional intelligence, mediation, facilitation and training, and an aptitude in fostering a positive work environment.

She has been with SEEDS since 2009, mediating and facilitating for businesses, communities, schools, spiritual communities, and public agencies. Over the years, she has trained hundreds of participants on many topics, including conflict resolution, communication, equity and belonging, and leadership skills. 


Barbara has lived in the East Bay since 1988.  She is an artist (specializing in portraiture) and enjoys spending time with her family.

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Lauren Lofton

Special Projects Manager

This photo expresses the gender expansiveness of this staff member. Thank you to non-binary and transgender professionals who paved the way with gender diverse headshots.

Lauren Lofton (they/them) is the Special Projects Manager for SEEDS. They support business development, program projects in partnership with the leadership team, facilitate the organization's communications teams including the Board of Directors, staff members and volunteers and support funding development projects in support of a sustainable business model. Lauren's speciality areas include effective program implementation and impact, development of SEEDS' theory of action, and organization-wide program evaluation. Lauren joined the SEEDS community in 2017 as a mediator, facilitator, and trainer (conflict resolution, communication, diversity, equity, inclusion). 

Lauren is a bi-racial Black attorney, a proud member of the LGBT+ community, and a born and raised San Franciscan. They enjoy spending time with loved ones, swimming, traveling and writing. They are a firm believer "the impossible" is possible. They believe our collective liberation is inevitable through the uprooting of systems of oppression and the planting of SEEDS of conflict transformation in support of a new and different world. They also believe in resting for resilience. 

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karina norton

Senior Practitioner - Conflict Transformation for Movement Spaces

karina (they/them) is a mediator, healer, transformative justice (TJ) practitioner, and digital organizer that takes a collaborative, collectivist approach to movement, accountability, and education work. After graduating from Vassar College with concentrations in Africana Studies, Political Science, and Francophone Studies, they joined the Spring Up collective doing TJ work, which introduced them to Restorative Justice and the SEEDS family. karina is a facilitator and coach with Spring Up, a coach and organizer with the Newburgh LGBTQ Center, and an advocate for Disabled, mad, and mentally ill students with Project LETS in addition to their capacity as Interim School Services Coordinator. They love tending to their plants, creating spaces that center joy and laughter, and believe that building intentional, accountable relationships and communities rooted in care and consent can transform our worlds.

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Mateo Sánchez 

Community Programs

Case Coordinator

Mateo Sánchez is the Community Programs Case Coordinator at SEEDS. In their role, they oversee the case management of mediation cases with a team of volunteers.


With a background in immigrant rights advocacy and advising organizations, Mateo provides direct services to community through a strong social justice lens, informed by their experience as a person with mixed-status background and member of the LGBTQ+ community. As an interpreter and bilingual storyteller, Mateo is also acutely attuned to the nuance and power of language as a tool for communication and the role that this plays in community building and transformative change. Mateo holds dual bachelor degrees in Psychology and Legal Analysis and looks forward to continuing to advocate for communities within oppressive institutions.


In their free time, Mateo can be found writing and snuggling with their cat Merlot. 

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Talia Sharpp

Community Programs


Talia Monet Sharpp (pronouns: they/them and she/her) is a community educator. They graduated from Hampton University in 2018 with a degree in Political Science and completed post-baccalaureate studies in African and African American Studies and Politics at Princeton University. Before joining SEEDS, she served as a Program Coordinator for the LGBTQIA Resource Center at the University of California Davis. Talia’s vocation is creating critical loving, communal spaces of support, agitation, and mitigation of harm for people within their community through collective based leadership. 


As a black queer and nonbinary person, Talia is passionate about supporting communities through the development of programming sensitive to the needs of our community with an aim to dismantle systems of oppression. Talia brings a wealth of knowledge and experience in crisis management, facilitation and training to their work as Community Programs Manager at SEEDS. In their free time, Talia enjoys cooking soul food, swimming, and dancing to afrobeats. 

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Becky Polley

Programs Coordinator

Becky Polley is the Programs Coordinator at SEEDS. With a background in social work, she joined SEEDS after working in operations, program coordination, and direct service with homeless/houseless youth and youth in Foster Care. In her previous work, Becky witnessed the power of productive communication, relationship building, and self-advocacy. She is excited to be working at an organization that helps people learn how to engage in and facilitate effective dialogue and conflict transformation. 


Becky grew up in Portland, OR, where she was living before recently moving to the Bay Area. When not working, she enjoys being outside, crafts, and sharing snack plates with friends. 


Felice Cat-Tuong Luu

Communications Coordinator

Felice Cat-Tuong Luu (she/her) is a Communications Coordinator at SEEDS. Her professional background is in communications, with experience in media relations, digital marketing and copywriting. Most recently, she helped manage internal communications and change management for a multimillion-dollar energy company. Felice is eager to be back in the nonprofit space and using her communications skills to support SEEDS' mission to cultivate positive communication and develop fundamental understanding for productive relationships.

Felice grew up in the Bay Area, but still regularly visits Seattle, WA to catch up with her college friends. Outside of work, you can find Felice bouldering at your local climbing gym, trying to keep her plants alive, and going out on late-night food adventures with friends. 

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Nina Sarazin

Operations Associate

Nina's career has been within a support role, and she really wouldn't have it any other way! A local native to San Francisco / Bay Area, granddaughter of a local organic grower (golden delicious apples) from Sebastopol, and first generation American on her maternal side, with her mother immigrating from Iran to the SF Bay in 1976. Her hobbies include hiking the amazing Bay, feeding people, and gardening. After earning a degree in Sociology, Nina focused on finding work within the world of local organic sustainable food chains, including direct relationships with growers and their families, and a specific role of supporting the many daily operations of organic food distributors, including logistics. With the birth of her son, the early and demanding world of organic produce could no longer be the priority it had been for so many years, and after a short term within the corporate world of mass produced fashion, Nina has been on the search for an organization that brings light, growth, and balance to life. Working with a non-profit is a new experience, but Nina has worked within B-Corps and spearheads volunteer activities within her local community in Oakland. Nina is very excited about joining the SEEDS team and hopes her skills can offer stellar support on the back end so the programs, coaching, schools, and trainings can shine bright.