Peter Sullivan Re-elected Chairman of Hinshaw & Culbertson LLP

June 3, 2024

Hinshaw & Culbertson LLP today announced that firm Chairman Peter D. Sullivan has been re-elected to a new three-year term, effective June 1, 2024. Sullivan first assumed the role in February 2019.

"I am honored to continue to serve the firm as its chairperson," Sullivan said. "It has been my privilege to help the firm navigate a series of transformational business shifts and growth opportunities in the last four years. Thanks to our dynamic and dedicated firm leadership team, we have successfully delivered on our commitment to provide superior client service while achieving strategic goals for practice and geographic expansion. As we prepare to mark the firm's 90th anniversary this year, I look forward to working closely with my colleagues to continue advancing the firm’s vision and mission."

Under Sullivan’s leadership, Hinshaw has achieved a series of strategic objectives, expanded marquee practices, boosted attorney headcount, and opened offices in important geographic markets. The firm added offices in New Orleans, Houston, Dallas, New Jersey, and Washington, D.C. In 2023, Hinshaw merged with Adler Murphy & McQuillen in Chicago, adding 23 lawyers and other legal professionals along with a new Aviation & Aerospace industry group, complementing the firm’s civil defense and professional liability practices. In addition, the firm has significantly expanded its Insurance practice, including adding a total of six lateral partners to West Coast offices since January and onboarding 33 attorneys to Hinshaw’s Consumer Financial Services practice in multiple offices across the country since the beginning of last year.

Sullivan has also been a driving force behind the firm’s successful and consistent record of client service and increased diversity initiatives. Hinshaw ranked highly in the 2024 BTI Consulting Client Service A-Team, and was also rated by BTI among the nation's top 31 law firms for trust and value. The firm also moved into the Top 50 in the 2023 American Lawyer Diversity Scorecard, rising by 36 positions in its upward trend for four consecutive years. In addition, Hinshaw was certified as a Mansfield 6.0 law firm last year. The Mansfield Rule aims to increase and sustain diversity in leadership within law firms.

With Sullivan at the helm, Hinshaw has also increased profitability. The firm’s gross annual revenue in 2023 was the third highest in the past two decades, increasing by more than 11 percent year-over-year.

As chairman, Sullivan also leads the firm’s Executive and Management Committees. A seasoned litigator, he represents clients in complex professional liability and commercial matters, including claims against accountants and attorneys, director and office liability coverage cases, consumer class action matters, and breach of contract cases.

Sullivan joined Hinshaw in May 1983 and was previously the leader of the firm’s Business Litigation practice group. He received his J.D. from Loyola University Chicago School of Law. He has received numerous legal industry awards, including inclusion in The Best Lawyers in America® for Commercial Litigation, from 2016 to 2024, and has been named to the Super Lawyers list by Illinois Super Lawyers magazine, from 2005 to 2024.

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Hinshaw & Culbertson LLP is a U.S.-based law firm with offices nationwide. The firm's national reputation spans the insurance industry, the financial services sector, professional services, and other highly regulated industries. Hinshaw provides holistic legal solutions—from litigation and dispute resolution, and business advisory and transactional services, to regulatory compliance—for clients of all sizes. Visit for more information and follow @Hinshaw on LinkedIn and X.