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National Interstate Corporation Announces Earnings Conference Call and Web Cast and Upcoming Investor Conference Presentations

RICHFIELD, Ohio, Feb. 3, 2011 (GLOBE NEWSWIRE) -- National Interstate Corporation (Nasdaq:NATL) announced today that the Company will release its 2010 fourth quarter and full year results after the market closes on Wednesday, February 23, 2011. The earnings release will be available shortly thereafter on the Company's investor relations website at http://invest.natl.com. In conjunction with the earnings release, fourth quarter and full year results will be discussed via conference call at 10:00 a.m. Eastern Standard Time on Thursday, February 24, 2011.
/ Source: GlobeNewswire

RICHFIELD, Ohio, Feb. 3, 2011 (GLOBE NEWSWIRE) -- National Interstate Corporation (Nasdaq:NATL) announced today that the Company will release its 2010 fourth quarter and full year results after the market closes on Wednesday, February 23, 2011. The earnings release will be available shortly thereafter on the Company's investor relations website at . In conjunction with the earnings release, fourth quarter and full year results will be discussed via conference call at 10:00 a.m. Eastern Standard Time on Thursday, February 24, 2011.

There are two communication modes available to listen to the call. Telephone access to the conference call and Q and A session will be available by dialing 888-680-0893 and providing the confirmation code 83168267. Please dial in 5 to 10 minutes prior to the scheduled starting time. To pre-register for the conference call, go to and follow the instructions provided. The conference call will be broadcast live over the Internet. To listen to the call via the Internet, access our website at and follow the instructions at the web cast link. The archived web cast will be available shortly after the call on our website.

Investor Conferences

The Company's management will make a presentation at the upcoming New York Society of Security Analysts 15th Annual Insurance Conference in New York City on Monday, February 7, 2011 and at the Bank of America Merrill Lynch 2011 Insurance Conference, also in New York City, on Tuesday, February 15, 2011.

The presentations may include forward-looking and other material information and will be available on the Company's website at .

About National Interstate Corporation

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 two primary insurers, National Interstate Insurance Company and Vanliner Insurance 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 investorrelations@nationalinterstate.com