Dallas – Sidley is pleased to announce that Kenneth Coffin has rejoined the firm as counsel in its White Collar Defense and Investigations practice in Sidley’s office in Dallas. Mr. Coffin returns to Sidley from the U.S. Attorney’s Office for the Northern District of Texas, one of the nation’s largest federal districts, where he served as Civil Chief. Earlier in his career, he began his legal journey at Sidley as both a summer associate and associate.
Mr. Coffin is a seasoned litigator and trial lawyer, with extensive experience in government investigations, healthcare, and government enforcement. He has led hundreds of investigations, including a wide array of matters involving the False Claims Act (FCA), healthcare enforcement, government contracts, parallel civil and criminal investigations, and parallel state and federal investigations. Mr. Coffin also has extensive experience litigating challenges to federal statutes and regulations.
Before rejoining Sidley, Mr. Coffin served for over 11 years in trial-level and leadership positions at the U.S. Attorney’s Office for the Northern District of Texas. He most recently served as the office’s Civil Chief, where he led a team of AUSAs and support professionals handling civil litigation and government investigations on behalf of the United States across the Northern District of Texas. As Civil Chief, Mr. Coffin supervised the Division’s Affirmative Civil Enforcement (FCA), Financial Litigation, and Defensive sections. He also served as part of the office’s senior management team, advising the U.S. Attorney and other Department of Justice officials on high-profile matters. Earlier in Mr. Coffin’s tenure, he directed the district’s Affirmative Civil Enforcement practice, where he oversaw actions involving the False Claims Act, healthcare fraud, procurement fraud, and COVID-19–related enforcement. Mr. Coffin led multiple consequential False Claims Act investigations during his tenure in government, resulting in hundreds of millions of dollars in settlements on behalf of the United States.
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