Liberty Mutual Appoints New Global Surety Underwriting Leads

BOSTON (Nov. 14, 2025) - Liberty Mutual Insurance today announced two leadership appointments supporting Global Surety.

Following Nate Zangerle's promotionto president, Global Surety, Chris Hunt will take over Zangerle's previous role as GRS Chief Underwriting Officer, Global Surety and Credit Global Product Leader.

Additionally, Mike Oliveri has been named Chief Underwriting Officer for Subcontractor Default Insurance, a role formerly held by Douglas Schrift who now heads Liberty's newly formed Global Infrastructure Solutionspractice.

Both leaders bring extensive experience and knowledge, uniquely positioning them to lead their organizations with excellence.

• Chris Hunt, CUO, Global Surety & GRS Credit Global Product Leader: Chris brings more than 20 years of experience within Liberty Mutual Surety, having demonstrated outstanding leadership, deep industry expertise, and a strong commitment to underwriting excellence. His proven track record in fostering collaborative partnerships and driving innovative solutions has positioned Liberty's business as a trusted leader in the surety industry. Chris will report to Nate Zangerleand his new role is effective January 1, 2026.

• Mike Oliveri, CUO, Subcontractor Default Insurance: Mike brings over 20 years of underwriting experience in the construction industry, including extensive leadership in building and managing successful SDI teams. Since joining Liberty in 2020, Mike has held key roles at Liberty Mutual Surety, first as an SDI Risk Engineer and currently as an SDI Underwriting Officer, where he manages SDI accounts, leads the risk engineering team, and supports underwriting operations across North America. Mike will report to Chris Huntand his new role is effective immediately.

"I'm thrilled to elevate Chris and Mike into these critical roles within Global Surety," said Liberty Mutual incoming Global Surety President Nate Zangerle. "With these new leaders at the helm of our underwriting, I am confident that our underwriting foundation will be further strengthened, ensuring disciplined, sustainable growth and delivering exceptional value to our clients and broker partners."

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About Liberty Mutual Insurance 

At Liberty Mutual, we believe progress happens when people feel secure. For more than 110 years we have helped people and businesses embrace today and confidently pursue tomorrow by providing protection for the unexpected and delivering it with care.  

AFortune 100company with more than 40,000 employees in 28 countries and economies, we are the ninth largest global property and casualty insurer and generate more than $50 billion in annual consolidated revenue.  

We operate through three strategic business units: US Retail Markets, providing auto, home, rentersand other personal and small commerciallines property and casualty insurance to individuals and small businesses countrywide; Global Risk Solutions, delivering a full range of comprehensive commercial and specialty insurance, reinsurance and surety solutions to mid-size and large businesses worldwide; and Liberty Mutual Investments, deploying more than $100 billion of long-term capital globally across its integrated platform to drive economic growth, power innovation and secure Liberty Mutual's promises.  

For more information, visit https://www.libertymutualinsurance.com.    

Contact: Liberty Mutual Insurance Public & Media Relations  

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