• University of California at Berkeley (B.A., magna cum laude)
  • Loyola Law School, Los Angeles (J.D.)

Bar and Court Admissions

  • California
  • New York
  • District of Columbia
  • Montana


  • Law clerk, Chief Judge Albert Lee Stephens, Jr. (C.D. Cal.)

Dean A. Ziehl

Photo of Dean A. Ziehl
Los Angeles
Tel: 310.277.6910
New York
Tel: 212.561.7700

Mr. Ziehl has been a managing partner of the firm since it was founded in 1983, overseeing its growth into the nation’s largest law firm specializing in insolvency matters. Admitted to the bar in both California and New York, he has a national bankruptcy and litigation practice, specializing in complex bankruptcy proceedings and business litigation, with significant trial experience in both state and federal courts.

Mr. Ziehl has represented debtors, creditor committees, bondholders, trustees, examiners, and equity holders in many of the firm’s most notable engagements, including the high-profile chapter 11 cases of Lehman Brothers, Adelphia Communications, American Suzuki Motor Corporation and Namvar/Namco, as well as numerous out-of-court workouts. He is or has recently been involved in many other significant chapter 11 cases, including Washington Mutual, Mike Tyson, Webvan Group, Chrysler Corporation and Polaroid Corporation. In addition, he serves as the liquidation trustee and disbursing agent for SFX Liquidating Trust and as chair of the trustees overseeing the liquidations of Adelphia Communications and Physiotherapy Associates. He has also represented the National Association of Bankruptcy Trustees as amicus curiae on numerous appeals in federal courts of appeal and state supreme and appellate courts.  

Mr. Ziehl currently serves as a member of the board of trustees of the U.S. Supreme Court Historical Society, the advisory board of the Loyola Law School Advocacy Institute, and the board of directors of the Ninth Judicial Circuit Historical Society. He is a former chair of the Los Angeles County Bar Association Litigation Section and the Ninth Circuit Judicial Conference Central District Lawyers Representatives.

Mr. Ziehl is a graduate of U.C. Berkeley and received his J.D. from Loyola Law School of Los Angeles, where he was a member of the Loyola Law Review editorial staff. Following law school, he clerked for the Hon. Albert Lee Stephens, Jr., Chief Judge of the U.S. District Court for the Central District of California. Mr. Ziehl has long held an “AV Preeminent Peer Rating,” Martindale-Hubbell's highest recognition for ethical standards and legal ability; has been voted by his business litigation peers as a "Super Lawyer" every year since 2004 (Los Angeles Magazine); and was selected by Best Lawyers in America for his work in Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law as well as Litigation—Bankruptcy. In 2014, the Century City Bar Association named him “Bankruptcy Lawyer of the Year.“ 


Fiduciary Engagements

  • Litigation trustee:
    • Litigation trustee and disbursing agent for SFX litigation trust. SFX  is a live events, ticketing, and digital entertainment conglomerate that owned or operated electronic dance music festivals and concerts worldwide.

    • Chair of the board of trustees overseeing the PAH litigation trust. Physiotherapy Associates was the largest pure-play provider of outpatient therapy services in the United States with over 1500 clinicians and 581 rehabilitation, orthotics, and prosthetics clinics in 29 states and the District of Columbia.

    • Chair of the board of trustees overseeing the liquidation of the Adelphia Communications estate and the prosecution of litigation claims held by the Adelphia Recovery Trust, a public Delaware grantor trust. Adelphia was the fifth largest cable company in the U.S. before filing for bankruptcy after accounting scandals revealed $2.3 billion of off-balance-sheet debt.

Professional Affiliations

  • Board of Trustees, U.S. Supreme Court Historical Society
  • Advisory Board, Loyola Law School Advocacy Institute
  • Ninth Judicial Circuit Historical Society Advisory Council, 2011-2012; Board of Directors, 2012-present
  • Member of court-appointed committees, United States District Court, Central District of California
  • Chair, Los Angeles County Bar Association Litigation Section (2001-02)
  • Chair, Ninth Circuit Judicial Conference Central District Lawyer Representative (1995-96; served multiple terms)
  • American Bar Association Business Law Section Task Force on Insurance Insolvency Steering Committee (1992-95)