Ivan Weinberg

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...

Bob Blum is a litigator who represents contractors and owners on construction claims and clients in many industries on contract and indemnity claims. He counsels lawyers and law firms on professional responsibility matters and represents creditors in bankruptcy cases. What Do You Focus On? With more than three decades of experience, I focus my practice in the following areas. Commercial Contract Litigation I represent construction, energy, vegetation management, financial services and retail ...

Daniel R. Golub is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Land Use and Zoning Law. Daniel R., 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 Daniel R. is held by other top lawyers in the same geographic and legal practice area.

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.

Sara, a shareholder at Walkup, prosecutes and serves as lead trial lawyer for severely injured individuals in cases involving defective products, transportation network companies like Uber and Lyft, aviation crashes, dangerous conditions of property, medical negligence, vehicular negligence, sexual assault, nursing home abuse, and other wrongdoing. When she isn’t representing clients, Sara is a lecturer at Stanford Law School, co-directing the Trial Advocacy course. She serves on the SF...

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.

Caitlin Sinclaire Blythe is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Caitlin Sinclaire, 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 Caitlin Sinclaire is held by other top lawyers in the same geographic and legal practice area.

Sean Absher is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Sean, who practices law in San Francisco, California, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sean is held by other top lawyers in the same geographic and legal practice area.

Michael J. Shuster is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice and Patent Law. Michael J., who practices law in San Francisco, California, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael J. is held by other top lawyers in the same geographic and legal practice area.

Richard M. Heimann is one of the nation’s foremost trial attorneys and skilled negotiators, with unparalleled experience in complex securities and investor fraud, antitrust and intellectual property, consumer protection, and personal injury and mass tort cases. Richard led Lieff Cabraser’s work in the Wells Fargo Shareholder Derivative Litigation and was appointed Co-Lead Plaintiffs’ Counsel in the case. In April 2020, the Court granted final approval to a settlement includi...