National Interstate Corporation Receives Notice of Intention to Invoke Cumulative Voting

RICHFIELD, Ohio, April 24, 2013 (GLOBE NEWSWIRE) -- National Interstate Corporation (Nasdaq:NATL) announced that on April 23, 2013, it received notice that a shareholder intends to invoke cumulative voting for the election of directors at the Company's 2013 annual meeting of shareholders to be held on May 2, 2013. For information regarding cumulative voting and related procedures, please see the Company's proxy statement filed with the Securities and Exchange Commission on April 16, 2013 and available via the internet on our website at

About National Interstate Corporation

An Insurance Experience Built Around You.

National Interstate Corporation (Nasdaq:NATL), founded in 1989, is the holding company for a specialty property-casualty insurance group which differentiates itself by offering products and services designed to meet the unique needs of niche markets. Products include insurance for passenger, truck, and moving and storage transportation companies, alternative risk transfer, or captive programs for commercial risks, specialty personal lines products focused primarily on recreational vehicle owners and small commercial vehicle accounts, and transportation and general commercial insurance in Hawaii and Alaska. The Company's insurance subsidiaries, including the three primary insurers, National Interstate Insurance Company, Vanliner Insurance Company and Triumphe Casualty Company, are rated "A" (Excellent) by A.M. Best Company. Headquartered in Richfield, Ohio, National Interstate is an independently operated subsidiary of Great American Insurance Company, a property-casualty subsidiary of American Financial Group, Inc. (NYSE:AFG) (Nasdaq:AFG).

CONTACT: Tanya Inama National Interstate Corporation 877-837-0339 www.natl.comSource:National Interstate Corporation