Attached files

file filename
10-Q - FORM 10-Q - National Interstate CORPd246046d10q.htm
EX-31.2 - EX-31.2 - National Interstate CORPd246046dex312.htm
EX-32.1 - EX-32.1 - National Interstate CORPd246046dex321.htm
EX-31.1 - EX-31.1 - National Interstate CORPd246046dex311.htm
EXCEL - IDEA: XBRL DOCUMENT - National Interstate CORPFinancial_Report.xls

EXHIBIT 32.2

NATIONAL INTERSTATE CORPORATION

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF SARBANES-OXLEY ACT OF 2002

I, Julie A. McGraw, Vice President and Chief Financial Officer of National Interstate Corporation (the “Company”), hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that (1) the quarterly report on Form 10-Q of the Company for the period ended September 30, 2011 (the “Form 10-Q”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and (2) the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

 

Date: November 4, 2011

/s/ Julie A. McGraw

Name: Julie A. McGraw

Title: Vice President and Chief Financial Officer

A signed original of this written statement will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.