Judge David Alan Rosen received his B.A. in communication studies from UCLA in 1978 where he was a member of Zeta Beta Tau and on the Dean’s List. He then received his J.D. cum laude from Loyola Law School Los Angeles in 1981 where he was a member of the St. Thomas More Law Honor Society and received an award for best brief as part of the Scott Moot Court Honors Program. After passing the California bar in 1981, he joined Rose, Klein and Marias, becoming partner in 1988. His work in private practice focused on toxic torts, asbestos exposure, and employment law. He also served on the board of governors for AAJ, CAOC, and CAALA, was trustee of the Civil Justice Foundation, was on the board of overseers for Loyola Law School, the trust advisory committees for Thorpe Insulation, J.T. Thorpe, and Western MacArthur, and was elected secretary of the executive committee for the Litigation Section of the Los Angeles County Bar Association. Additionally, he served as a temporary judge in the Los Angeles Superior Court, a neutral mediator for Los Angeles County C.R.A.S.H., and was on the California Commission on Access to Justice. He was appointed to the bench in 2015 by Governor Jerry Brown and is a democrat.


Is the bench the place for you? – Advocate – 2017

Briefing witnesses for deposition or cross-examination – Forum – 2015

Some Common, and not so common, Issues of Admissibility at Trial – Advocate – 2010

Use and Abuse of the Sophisticated User Defense – Advocate – 2009

Toxic Torts – Forum – 2005

Third Party Litigation and Workers' Comp. – Forum – 2003


Lawyer of the Year - Mass Torts/Class Actions - Southern California 2014

Edward I. Pollock Award (CAOC), 2011

Heavy Lifting Award (AAJ), 2011

Ted Horn Memorial Award (CAALA), 2010

Wiedemann & Wysocki Award (AAJ), 2010


Los Angeles Superior Court – Courtroom Rules

The Robing Room – David A. Rosen

David Rosen – Ballotpedia

David Rosen – LinkedIn

David A. Rosen – Advocate

Brown Names Four to Los Angeles Superior Court Judgeships – Metropolitan News-Enterprise