Ariel Sosna 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. Ms. Sosna's practice at the firm focuses on divorce (including complex property allocation and division), child custody, parentage (paternity), child support and spousal support, arrears issues, domestic partnerships, and prenuptial agreements. In addition, she regularly serves as a reviewing attorney for mediated agreements.

Ms. Sosna received her J.D., with a concentration in family law, from U.C. Hastings School of the Law and her B.A. in Psychology from U.C. Berkeley. She currently co-authors the column, “Family Law Corner,” published monthly in The Bar Association of San Francisco Bulletin and is an active member of several professional organizations, including the San Francisco Bar Association's Barristers Club, the Queen's Bench, the State Bar of California and the American Bar Association. Ms. Sosna previously worked at the San Francisco Superior Court Family Law Facilitator's Office, the Law Center for Families (assisting with the Deaf Women's Legal Project), and the Center for Families, Children and the Courts, a division of the Administrative Office of the Courts.