Ariel Sosna
Founding Partner
Ariel Sosna is a highly experienced family law attorney who previously worked at a prominent San Francisco law firm before establishing her own practice. She has a strong background in mediation, having completed a 40-hour Mediation Intensive Training Program in 2013, and is trained in collaborative divorce. Ms. Sosna’s family law practice encompasses various areas, including divorce, child custody, support, and complex property allocation. She is an active member of several legal organizations, including the State Bar of California's Family Law Section and the San Francisco Bar Association's Family Law Section. Ms. Sosna holds a J.D. with a focus on Family Law from University of California, Hastings School of the Law and a BA in Psychology from University of California, Berkeley. Prior to establishing her own legal practice, she worked as an associate at a reputable San Francisco law firm. Ms. Sosna also served as co-chair of the Family Law Section within the San Francisco Bar Association's Barristers Club. She volunteers with the San Francisco Superior Court as a settlement officer and with San Mateo Superior Court with their self-represented litigant status conferences. Ms. Sosna has been selected by Super Lawyers every year since 2009, first as a Rising Star from 2009 to 2018 and later as a Super Lawyer from 2019 to 2023. She is also a Martindale-Hubbell AV preeminent attorney.
Sarah A Van Voorhis
Founding Partner
Sarah Van Voorhis is a founding partner of Van Voorhis & Sosna LLP, a San Francisco law firm dedicated exclusively to resolving family law matters for clients throughout the Bay Area. Her practice focuses on complex marital and domestic partner dissolutions, including property allocation and division, child custody issues, parentage or paternity, child support, spousal support, and the legal aspects of custodial and non-custodial parent relocation. Ms. Van Voorhis regularly drafts prenuptial/postnuptial agreements and also serves as the reviewing attorney for such agreements. Ms. Van Voorhis received her J.D. from Stanford Law School and her BA from the University of Utah. She is also one of only a small percentage of California attorneys who have been certified as Specialists in Family Law by the State Bar of California Board of Legal Specialization. Ms. Van Voorhis is a highly experienced divorce and family law attorney with a distinguished career in the Bay Area. She has consistently received recognition from Super Lawyers magazine since 2009, including being named one of the Top 100 Attorneys in Northern California from 2015 to 2018, and 2020 to 2023, as well as one of the Top 50 Women in Northern California from 2013 to 2023. Ms. Van Voorhis is a former chairperson of the Family Law Advisory Commission for the State Bar of California and acts as a settlement officer for the San Francisco County Unified Family Court.
