Manning & Napier (MN) 10-Q 2018 Q1 Quarterly report

Exhibit 32.1(a)

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Jeffrey S. Coons, the President and Co-Chief Executive Officer of Manning & Napier, Inc. (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:

• The Quarterly Report on Form 10-Q of the Company for the quarter ended March 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Form 10-Q”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

• The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Jeffrey S. Coons

Jeffrey S. Coons

President and Co-Chief Executive Officer

(principal executive officer)

Date: May 10, 2018