This Amendment No. 5 (the "Amendment No. 5") to the statement filed on Schedule 13D on June 25, 2015 (the "Original 13D"), as amended by Amendment No. 1 (the "Amendment No. 1") filed on February 7, 2017, Amendment No. 2 (the "Amendment No. 2") filed on January 5, 2018, Amendment No. 3 (the "Amendment No. 3") filed on April 12, 2018, and Amendment No. 4 (the "Amendment No. 4") filed on March 26, 2019, relating to the Common Stock, $0.0001 par value per share (the "Common Stock"), of Pulmatrix, Inc. (the "Issuer") having its principal executive office at 99 Hayden Avenue, Suite 390, Lexington, MA, 02421 (the "Original 13D", together with this Amendment No. 5, Amendment No. 4, Amendment No. 3, Amendment No. 2 and Amendment No. 1, the "Schedule 13D") amends the Original 13D as set forth herein.
Certain terms used but not defined in this Amendment No. 5 shall have the meanings assigned thereto in the Original 13D (as amended by Amendment No. 1, Amendment No. 2, Amendment No. 3 and Amendment No. 4). Except as specifically provided herein, this Amendment No. 5 does not modify any of the information previously reported in the Original 13D, Amendment No. 4, Amendment No. 3, Amendment No. 2 or Amendment No. 1.