Jackson National Life Insurance Co. announced two senior executive promotions within its operations and information technology units.

The Lansing, Mich., unit of London-based Prudential plc, said Monday it promoted Laura Prieskorn, 41, to senior vice president and chief administrative officer, and J. Mark Clark, 49, to senior vice president and chief information officer.

In her new role, Prieskorn will oversee all departments and functions within Jackson’s operational areas, including new business, policyholder services, broker management, claims, and the telephone service center, as well as the company’s relationship management and business analytics groups. She was vice president of the company’s customer service center. Prieskorn has worked for Jackson for 21 years.

As CIO, Clark will be responsible for all of the systems and programming departments that support Jackson and its subsidiaries. He joined Jackson in 1996 from Cooperative Technologies, a firm he co-founded. Before that, he was an IT applications system manager of actuarial systems at SunAmerica.

Jackson, which had $77 billion in assets under management as of June 30, provides variable, fixed and fixed index annuities. The company also offers life insurance and institutional products. Jackson markets its products in 49 states and the District of Columbia through independent and regional broker-dealers, financial institutions and independent insurance agents.

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