Lockton has appointed Peter Rapciewicz as the new US Casualty leader and Jessica Cullen as head of Excess Casualty and Operations.  

Rapciewicz brings more than two decades of experience to his new position, where he will direct the growth of Lockton’s casualty offerings in the US.  

He will report to Devin Beresheim, the US Risk Solutions Leader at Lockton.  

Rapciewicz’s previous position involved leading Lockton’s Alternative Risk Solutions Practice, where he oversaw parametric insurance, structured risk solutions, captive consulting, alternative collateral strategies and legacy solutions globally.   

He also played a crucial role in setting up the Global Parametric Practice at Lockton. 

Beresheim said: “Pete and Jessica are proven leaders with a strong reputation of innovation and solving complex problems for our clients. I am confident that with their technical expertise, strategic mindset and unwavering commitment to client service, our clients will get the right solutions to help their businesses thrive.”  

Rapciewicz stated: “I am excited to take on the role of US Casualty Leader. Over the past decade, I have had the privilege of working with our outstanding Alternative Risk Solutions team during a period of tremendous growth. In this new role, I am fortunate to continue working with Devin, eager to collaborate with Jessica, and grateful for the opportunity to keep working with the incredible colleagues and clients we have at Lockton.”  

Cullen, who will report to Rapciewicz, is tasked with strengthening the company’s casualty capabilities and supporting the growth of the excess liability platform.  

Having joined Lockton in 2024 as US Casualty Practice head in London, she has 20 years of experience in the industry. 

Cullen was formerly managing director of the Casualty Practice at Gallagher. 

Both Rapciewicz and Cullen operate out of New York City.  

Last month, the company appointed Hiram Marrero as president and chief growth officer for Lockton’s US operations.