David Ostiller

Patrick J. Devine is a top attorney recognized by Best Lawyers in the practice area(s) of Securities / Capital Markets Law. Patrick J., who practices law in San Francisco, California, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick J. is held by other top lawyers in the same geographic and legal practice area.

Robert A. Roth is widely regarded as one of the leading family law appellate specialists in California. He has over 30 years’ experience as an appellate practitioner and more than 25 published (and scores of unpublished) appellate opinions to his name. Robert has won twice in the California Supreme Court, and notably represented the successful respondent in In re Marriage of Ostler and Smith (1990) 223 Cal.App.3d 33, a seminal case that established the method California courts use every...

David H. Kremer is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. David H., who practices law in San Francisco, California, has been recognized since 1997. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David H. is held by other top lawyers in the same geographic and legal practice area.

William E. Bonano is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Controversy - Tax and Tax Law. William E., who practices law in San Francisco, California, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William E. is held by other top lawyers in the same geographic and legal practice area.

Nicholas A. Brown is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Patent. Nicholas A., who practices law in San Francisco, California, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nicholas A. is held by other top lawyers in the same geographic and legal practice area.

Attorney R. Brent Wisner is a managing partner of Wisner Baum (formerly Baum Hedlund Aristei & Goldman), a nationwide law firm based in Los Angeles, California. He focuses his practice on holding negligent and sometimes malicious corporations accountable through pharmaceutical product liability, toxic torts and consumer fraud and class action litigation. One of the firm’s leading trial lawyers, Brent oversees the mass tort litigation department. He is actively involved in all litiga...

Mr. Fiero serves as a co-chair of the firm's Committee Practice Group and maintains a national practice representing debtors, committees, acquirers, and other significant parties in interest in complex reorganizations and financially distressed situations, both in and out of court. Mr. Fiero is a graduate of the University of Massachusetts at Amherst and received his J.D. from Hastings College of the Law, where he was associate note editor for the Hastings Journal of Communications and Entert...

Barbara Schussman, a partner in the firm's Environment, Energy & Resources practice, focuses on securing federal, state and local agency approvals needed to develop a wide range of private and public projects, including industrial scale solar facilities, university campuses, hospitals, research and development facilities, water supply and storage projects, oil refineries, maritime port and airport expansions, and numerous industrial, commercial, housing and mixed use developments. Barbara...

Marianne C. Koepf is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. Marianne C., who practices law in San Francisco, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marianne C. is held by other top lawyers in the same geographic and legal practice area.

Michael O’Bryan is a partner in the firm’s Corporate Department. His practice focuses on U.S. and international mergers, acquisitions, divestitures, and other strategic transactions, including “going private” and other related party transactions. He has been involved in more than 350 M&A transactions, advising companies, boards, and special committees, as well as investment banks, in both negotiated and contested transactions. Mr. O’Bryan has worked extensive...