About John P. Sieger

In Memoriam

The Katten community is deeply saddened by the untimely loss of our friend and partner, John Sieger, who passed away on March 21, 2021.  

John was a true leader in our firm, serving as Chair of our Insolvency and Restructuring Department, and he advocated tirelessly on behalf of his clients. Equally important, he was a loyal friend and partner to so many and a natural mentor and sponsor to many of our colleagues. His practical, honest perspectives and sharp wit were appreciated by everyone lucky enough to know him. He shared his love of music and sports, particularly his beloved Chicago Cubs, freely and you could always rely on John to have a great story at the ready. 

Above all else, he was a family man who was devoted to his wife and two children. We love John, and miss him immensely. We extend our thoughts and prayers to his family and friends. 

More about John

John Sieger was the national head of Katten's Insolvency and Restructuring practice. He guided clients through hundreds of reorganizations, sales, and liquidations, including related litigation proceedings at all levels up to and including the US Supreme Court. His practice focused on representing middle-market lenders and owners and acquirers of distressed businesses. John drew upon decades of experience to bring parties together to achieve efficient, business-focused results.

John knew the day-to-day realities that lenders and business owners faced and respected them in devising legal strategies. His work on bankruptcies throughout a range of industries — including those of the Chicago Tribune, TMST Mortgage, Conseco, Vanguard Natural Gas and Sentinel Management Group — gave him a firm grounding in the complexities of high-stakes business challenges.

John identified the important issues and relationships quickly. That allowed him to work efficiently and with a lean team, always ensuring that a senior partner was closely involved and available to clients. While protracted litigation is rarely preferred, John also handled a variety of litigation matters, including appellate matters before the US Supreme Court, where Katten represented the larger of two senior lenders in In re RadLAX, a landmark case unanimously endorsing credit-bid rights in bankruptcy plans.

Practice Focus

  • Chapter 11 proceedings
  • Out-of-court restructurings
  • Lender- and borrower-side issues
  • Insolvency-related litigation
  • Transactional work related to the foregoing