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    SEC Form 8-K filed by Spero Therapeutics Inc.

    6/25/26 5:08:23 PM ET
    $SPRO
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Get the next $SPRO alert in real time by email
    8-K
    false 0001701108 --12-31 0001701108 2026-06-23 2026-06-23
     
     

    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): June 23, 2026

     

     

    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)

      (I.R.S. 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:

     

    ☐

    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   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 5.02

    Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

    Approval of the 2026 Stock Incentive Plan

    At the 2026 Annual Meeting of Stockholders (the “Annual Meeting”) of Spero Therapeutics, Inc. (the “Company”) held on June 23, 2026, the Company’s stockholders approved the Spero Therapeutics, Inc. 2026 Stock Incentive Plan (the “2026 Plan”), which had previously been adopted by the Company’s board of directors (the “Board”), subject to stockholder approval. Subject to adjustments in accordance with the 2026 Plan, up to 12,895,866 shares of common stock may be issued from time to time pursuant to the 2026 Plan.

    The description of the 2026 Plan is contained on pages 49 to 59 of the Company’s proxy statement for the Annual Meeting (the “Proxy Statement”), filed with the Securities and Exchange Commission (the “SEC”) on April 27, 2026, is incorporated herein by reference. A complete copy of the 2026 Plan is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

     

    Item 5.03

    Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

    Amendment to Articles of Incorporation

    At the Annual Meeting, the stockholders of the Company approved an amendment to the Company’s Amended and Restated Certificate of Incorporation, to increase the total number of shares of common stock authorized for issuance thereunder from 120,000,000 shares to 240,000,000 shares. The certificate of amendment to the Company’s Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) was filed with the Secretary of State of the State of Delaware on June 23, 2026 and became effective upon filing.

    The foregoing description is qualified in its entirety by the Certificate of Amendment, which is attached as Exhibit 3.1 and is incorporated herein by reference.

     

    Item 5.07

    Submission of Matters to a Vote of Stockholders

    On June 23, 2026, the Company held its Annual Meeting. Of the 57,901,493 shares of common stock issued and outstanding and eligible to vote as of the record date of April 24, 2026, a quorum of 41,061,190 shares, or approximately 70.91% of the outstanding shares, were present in person or by proxy at the Annual Meeting.

    The following actions were taken at the Annual Meeting:

     

      1.

    The following nominees were reelected to serve on the Company’s board of directors as Class III directors until the Company’s 2029 annual meeting of stockholders, based on the following votes:

     

    Name

       Votes For      Votes Withheld      Broker Non-Votes  

    Milind Deshpande, Ph.D.

         26,745,670        2,254,740        12,060,780  

    Kathleen Tregoning

         28,259,925        740,485        12,060,780  

     

      2.

    The selection of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026 was ratified, based on the following votes:

     

    Votes For

      

    Votes Against

      

    Votes Abstained

      

    Broker Non-Votes

    40,866,196    189,300    5,694    N/A

     

      3.

    The advisory vote on the compensation of the Company’s named executive officers, as described in the Proxy Statement, was approved, based on the following votes:

     

    Votes For

      

    Votes Against

      

    Votes Abstained

      

    Broker Non-Votes

    27,890,254    1,002,982    107,174    12,060,780

     

      4.

    The amendment to the Company’s Amended and Restated Certificate of Incorporation to increase the total number of shares of common stock authorized for issuance thereunder from 120,000,000 shares to 240,000,000 shares, was approved, based on the following votes:

     

    Votes For

      

    Votes Against

      

    Votes Abstained

      

    Broker Non-Votes

    30,356,780    10,558,645    145,765    N/A

     

      5.

    The Spero Therapeutics, Inc. 2026 Stock Incentive Plan, was approved, based on the following votes:

     

    Votes For

      

    Votes Against

      

    Votes Abstained

      

    Broker Non-Votes

    25,379,610    3,567,416    53,384    12,060,780

     


    Item 9.01

    Financial Statements and Exhibits

     

    (d)

    Exhibits

     

    Exhibit No.

      

    Description

    3.1    Certificate of Amendment to Restated Certificate of Incorporation of Spero Therapeutics, Inc.
    99.1    Spero Therapeutics, Inc. 2026 Stock Incentive Plan (incorporated by reference to Exhibit 99.1 of registrant’s Registration Statement on Form S-8 (File No. 333-296972) filed with the SEC on June 23, 2026)
    104    Cover Page Interactive Data File (embedded within the Inline XBRL document and incorporated as Exhibit 101)

     


    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.

     

    Date: June 25, 2026     SPERO THERAPEUTICS, INC.
        By:  

    /s/ Esther Rajavelu

          Esther Rajavelu
          Chief Executive Officer and Chief Financial Officer
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