8-K

SPERO THERAPEUTICS, INC.

Date: December 5, 2019

/s/ Stephen DiPalma

Stephen DiPalma

Interim Chief Financial Officer and Treasurer

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 5, 2019

SPERO THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)


Delaware	001-38266	46-4590683
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

675 Massachusetts Avenue, 14th Floor Cambridge, Massachusetts		02139
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (857) 242-1600

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading

Symbol(s)

Name of each exchange

on which registered

Common Stock, $0.001 par value per share

SPRO

The Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒

Item 7.01.

Regulation FD Disclosure.

On December 5, 2019, Spero Therapeutics, Inc. (the “Company”) updated its investor presentation (the “Investor Presentation”), which the Company expects to use in connection with general corporate presentations and will be made available on the Company’s website or distributed by the Company in hardcopy or electronic form.

A copy of the Investor Presentation is attached as Exhibit 99.1 to this Current Report on Form 8-K (this “Current Report”). The Investor Presentation is current as of December 5, 2019, and the Company disclaims any obligation to update the Investor Presentation after such date.

The information set forth in this Item 7.01 and the Investor Presentation is “furnished” and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed incorporated by reference in any filing under the Exchange Act or the Securities Act of 1933, as amended.

Item 9.01.

Financial Statements and Exhibits.

(d) Exhibits.



Exhibit 99.1		Investor Presentation of Spero Therapeutics, Inc. dated December 5, 2019.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.