Liberty International Underwriters Appoints Diana Cossetti as Head of U.S. Casualty

New Underwriting Leadership Role Rounds Out U.S. Executive Team

NEW YORK--()--Liberty International Underwriters (LIU), part of Liberty Mutual Insurance, has named industry leader Diana Cossetti as senior vice president of LIU’s U.S. Casualty operation - a newly created underwriting leadership role overseeing Primary Casualty, Excess Casualty, Environmental, Railroad and Crisis Management. She will be based in New York and report directly to LIU’s Chief Underwriting Officer for U.S. operations, Michael Finnegan.

“The reputation of LIU and its underwriters as specialty lines market leaders drew me to the company”

“Diana’s breadth of experience made her the perfect choice to lead our multi-line U.S. Casualty team,” said Finnegan. “Her deep market knowledge and strong producer relationships will help us develop innovative coverage solutions and easier ways for brokers and agents to engage us, ensuring we meet the evolving needs of their clients.”

Ms. Cossetti brings more than 28 years of insurance industry experience to LIU, including the last 14 years in senior executive positions with Crum & Forster. Working in nearly every aspect of the business, her extensive background in both retail and wholesale markets will foster greater collaboration among LIU’s casualty offerings and enhance our position with the market in these segments.

“The reputation of LIU and its underwriters as specialty lines market leaders drew me to the company,” said Cossetti. “I am excited to work with the team to drive greater innovation and develop product strategies that will continue to deliver excellence on all fronts, including improved broker access.”

Brokers and agents can contact Ms. Cossetti directly at 212-208-4112 or

About Liberty International Underwriters

Part of Liberty Mutual Insurance, Liberty International Underwriters (LIU) distributes global specialty lines products and services exclusively through the independent broker network worldwide to insure specialized risk in most countries in the world.

From New York to Melbourne, LIU maintains underwriting consistency that leverages substantial global capacity while giving its underwriters broad local authority to deliver creative solutions that genuinely add value.

About Liberty Mutual Insurance

Liberty Mutual’s mission is to help people preserve and protect what they earn, build, own and cherish. Keeping this promise means we are there when our policyholders throughout the world need us most.

We began our operations in Boston, Massachusetts in 1912. Today Liberty Mutual is a diversified insurer with operations in 30 countries and economies around the world. We are the third largest property and casualty insurer in the U.S. based on 2014 direct premium written as reported by the National Association of Insurance Commissioners.

Liberty Mutual is ranked 78th on the Fortune 100 list of largest corporations in the U.S. based on 2014 revenue. As of December 31, 2014, we have $124.3 billion in consolidated assets, $104.0 billion in consolidated liabilities, and $39.6 billion in annual consolidated revenue.

Liberty Mutual employs more than 50,000 people in approximately 900 offices throughout the world, and we offer a wide range of insurance products and services, including personal automobile, homeowners, accident & health, commercial automobile, general liability, property, surety, workers compensation, group disability, group life, specialty lines, reinsurance, individual life and annuity products.

You can learn more by visiting


Liberty International Underwriters
Adrianne Kaufmann, 617-574-5983

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