EX-32.1 4 d32697dex321.htm EXHIBIT 32.1

Exhibit 32.1

CERTIFICATIONS UNDER SECTION 906

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of Pulmatrix, Inc., a Delaware corporation (the “Company”), does hereby certify, to such officer’s knowledge and in the capacity of an officer, that:

The Quarterly Report for the quarter ended September 30, 2015 (the “Form 10-Q”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, 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 as of, and for, the periods presented in the Form 10-Q.

Dated: November 12, 2015 |  |  |  | /s/ Robert W. Clarke
|  |  |  | Robert W. Clarke
|  |  |  | President and Chief Executive Officer
|  |  |  | (Principal Executive Officer)
Dated: November 12, 2015 |  |  |  | /s/ William Duke, Jr.
|  |  |  | William Duke, Jr.
|  |  |  | Chief Financial Officer
|  |  |  | (Principal Financial Officer)