Tom Greene is the Senior Assistant Attorney General for Antitrust for the California Department of Justice.  After working for eight months in Washington, D.C. on the Microsoft remedies litigation, he was named chief of a task force focusing on energy litigation and investigations.  In his antitrust role, Tom managed a diverse antitrust case load in federal and state court.  His own practice has ranged from bid-rigging cases in state court to complex, multi-district litigation in federal court.  In 1989, he argued and won California v. ARC America Corp., 490 U.S. 93 (1989), which vindicated state indirect purchaser remedies.  In 1992, he served as national class counsel in In re Insurance Antitrust Litigation, which created a model for effective multistate litigation.  Subsequently he served in leadership roles in a variety of multistate actions and was lead attorney for California's action against the tobacco industry, which was ultimately settled for $25 billion.

He worked previously as special counsel to the Committee on Interstate and Foreign Commerce of the U.S. House of Representatives and as a trial lawyer for the Los Angeles County Public Defender and the Criminal Division of the California Attorney General's office.

Tom is the immediate past chair of the Multistate Antitrust Task Force of the National Association of Attorneys General, and a recent recipient of the association's Marvin Award for national leadership. By appointment of the Chief Justice of the California Supreme Court, he served on the Judicial Council's Complex Civil Litigation Task Force, which issued a bench book on the management of complex cases in California trial courts. He is the author of various publications on antitrust and the management of complex litigation.  He was honored to be named Antitrust Lawyer of the Year by the California Bar Association's Antitrust and Unfair Competition Law Section in 2001.

He received his B.A. in economics from the University of California at Berkeley and his J.D. from the University of California at Davis.  He practices in Sacramento.