• Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • Settings
  • RSS Feeds
Quantisnow Logo
  • Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • Settings
  • RSS Feeds
PublishGo to App
    Quantisnow Logo

    © 2026 quantisnow.com
    Democratizing insights since 2022

    Services
    Live news feedsRSS FeedsAlertsPublish with Us
    Company
    AboutQuantisnow PlusContactJobsAI superconnector for talent & startupsNEWLLM Arena
    Legal
    Terms of usePrivacy policyCookie policy

    Generation Bio Co. filed SEC Form 8-K: Material Modification to Rights of Security Holders, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

    7/18/25 8:45:10 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Get the next $GBIO alert in real time by email
    Generation Bio Co._July 18, 2025
    0001733294false--12-3100017332942025-07-182025-07-18

    ​

    ​

    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): July 18, 2025

    Generation Bio Co.

    (Exact Name of Registrant as Specified in Charter)

    ​

    Delaware

        

    001-39319

        

    81-4301284

    (State or Other Jurisdiction

    of Incorporation)

    ​

    (Commission

    File Number)

    ​

    (IRS Employer

    Identification No.)

    ​

    ​

    301 Binney Street

    Cambridge, MA

        

    02142 

    (Address of Principal Executive Offices)

    ​

    (Zip Code)

    ​

    Registrant’s telephone number, including area code: (617) 655-7500

    Not applicable

    (Former Name or Former Address, if Changed Since Last Report)

    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, $0.0001 par value per share

    ​

    GBIO

    ​

    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 3.03Material Modification to Rights of Security Holders.

    To the extent required by Item 3.03 of Form 8-K, the information contained in Item 5.03 of this Current Report on Form 8-K is incorporated herein by reference.

    Item 5.03Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

    On July 18, 2025, Generation Bio Co. (the “Company”) filed a Certificate of Amendment to the Company’s Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of State of the State of Delaware, which will effect, as of 5:00 p.m. Eastern Time, on July 21, 2025 (the “Effective Time”), a 1-for-10 reverse stock split (the “Reverse Stock Split”) of the issued and outstanding shares of the Company’s common stock, $0.0001 par value per share (the “Common Stock”).

    The Reverse Stock Split is intended to, among other things, bring the Company into compliance with the minimum bid price requirement for continued listing on the Nasdaq Global Select Market, as previously reported in the Company’s definitive proxy statement for the Company’s annual meeting of stockholders held on June 4, 2025, as filed with the Securities and Exchange Commission on April 23, 2025 (the “Proxy Statement”).

    At the Effective Time, every 10 shares of issued and outstanding Common Stock will be automatically reclassified and combined into one share of Common Stock. No fractional shares will be issued in connection with the Reverse Stock Split. Stockholders who would otherwise be entitled to a fractional share of Common Stock are instead entitled to receive a cash payment in lieu of such fractional shares.

    The Reverse Stock Split will not change the number of authorized shares of Common Stock or the par value of the Common Stock. Proportionate adjustments will be made to the number of shares of Common Stock available for issuance under the Company’s equity incentive plans and the number of shares underlying, and the exercise prices of, outstanding equity awards under such plans in accordance with their respective terms and as described in the Proxy Statement.

    The Common Stock is expected to begin trading on a post-Reverse Stock Split basis at the market open on July 22, 2025 under the Company’s existing trading symbol “GBIO”. The new CUSIP number for the Common Stock following the Reverse Stock Split is 37148K 209.

    The foregoing description of the Certificate of Amendment does not purport to be complete and is qualified in its entirety by reference to the complete text of the Certificate of Amendment, a copy of which is attached hereto as Exhibit 3.1 and is incorporated herein by reference.

    Item 9.01

    Financial Statements and Exhibits.

    (d) Exhibits

     

    ​

    ​

    Exhibit

    No.

     

    Description

    3.1

     

    Certificate of Amendment of Amended and Restated Certificate of Incorporation of Generation Bio Co.

    99.1

     

    Press Release Issued by Generation Bio Co. on July 18, 2025.

    104

     

    Cover Page Interactive Data File (formatted as Inline XBRL)

     

    ​

    ​

    SIGNATURES

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

    ​

    ​

    ​

    ​

    GENERATION BIO CO.

    Date: July 18, 2025

    By:

    /s/ Geoff McDonough

    Name: Geoff McDonough, M.D.

    Title: President and Chief Executive Officer

    ​

    ​

    ​

    Get the next $GBIO alert in real time by email

    Crush Q1 2026 with the Best AI Superconnector

    Stay ahead of the competition with Standout.work - your AI-powered talent-to-startup matching platform.

    AI-Powered Inbox
    Context-aware email replies
    Strategic Decision Support
    Get Started with Standout.work

    Recent Analyst Ratings for
    $GBIO

    DatePrice TargetRatingAnalyst
    12/16/2025$5.50Neutral → Outperform
    Wedbush
    12/16/2025$5.00Buy → Hold
    Jefferies
    8/13/2025$7.00Outperform → Neutral
    Wedbush
    10/19/2023Outperform → Market Perform
    TD Cowen
    11/8/2022$9.00Buy
    Canaccord Genuity
    12/15/2021$40.00 → $10.00Market Outperform
    JMP Securities
    12/15/2021$50.00 → $27.00Buy
    Needham
    12/14/2021Outperform → Mkt Perform
    William Blair
    More analyst ratings

    $GBIO
    SEC Filings

    View All

    Amendment: SEC Form SC TO-T/A filed by Generation Bio Co.

    SC TO-T/A - Generation Bio Co. (0001733294) (Subject)

    1/30/26 5:14:05 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Amendment: SEC Form SC 14D9/A filed by Generation Bio Co.

    SC 14D9/A - Generation Bio Co. (0001733294) (Subject)

    1/30/26 5:10:30 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Amendment: SEC Form SC TO-T/A filed by Generation Bio Co.

    SC TO-T/A - Generation Bio Co. (0001733294) (Subject)

    1/12/26 7:58:22 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $GBIO
    Analyst Ratings

    Analyst ratings in real time. Analyst ratings have a very high impact on the underlying stock. See them live in this feed.

    View All

    Generation Bio upgraded by Wedbush with a new price target

    Wedbush upgraded Generation Bio from Neutral to Outperform and set a new price target of $5.50

    12/16/25 12:29:16 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Generation Bio downgraded by Jefferies with a new price target

    Jefferies downgraded Generation Bio from Buy to Hold and set a new price target of $5.00

    12/16/25 8:41:52 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Generation Bio downgraded by Wedbush with a new price target

    Wedbush downgraded Generation Bio from Outperform to Neutral and set a new price target of $7.00

    8/13/25 8:02:22 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $GBIO
    Insider Trading

    Insider transactions reveal critical sentiment about the company from key stakeholders. See them live in this feed.

    View All

    Chief Financial Officer Conway Kevin John converted options into 235 shares and covered exercise/tax liability with 72 shares, increasing direct ownership by 9% to 2,072 units (SEC Form 4)

    4 - Generation Bio Co. (0001733294) (Issuer)

    2/4/26 4:05:30 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Mcdonough Geoff covered exercise/tax liability with 550 shares and converted options into 1,582 shares, increasing direct ownership by 0.75% to 138,492 units (SEC Form 4)

    4 - Generation Bio Co. (0001733294) (Issuer)

    2/4/26 4:05:27 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    INTERIM CEO & PRESIDENT Howze Yalonda converted options into 1,673 shares and covered exercise/tax liability with 495 shares, increasing direct ownership by 46% to 3,759 units (SEC Form 4)

    4 - Generation Bio Co. (0001733294) (Issuer)

    2/4/26 4:05:25 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $GBIO
    Press Releases

    Fastest customizable press release news feed in the world

    View All

    NodThera Appoints Geoff McDonough, M.D., as Chief Executive Officer

    Dr. McDonough brings global company-building, commercial strategy, and R&D leadership experience to the Company ahead of key clinical milestones NodThera plans to report results from two Phase 2 cardiometabolic trials RESOLVE-1 and RESOLVE-2 in mid-2026 and third quarter 2026 respectively Company preparing to begin cardiometabolic Phase 3 trial in 1H 2027 BOSTON, Feb. 04, 2026 (GLOBE NEWSWIRE) -- NodThera, the leading clinical-stage NLRP3 company developing a portfolio of best-in-class brain-penetrant and immune-targeted oral inhibitors to address unmet needs in cardiometabolic and neuroinflammatory diseases driven by the NLRP3/IL-6/IL-1 inflammation pathway, announced the appointment o

    2/4/26 8:00:00 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Satellos Appoints Antoinette Paone as Chief Development Officer and Head of Regulatory Affairs

    Experienced industry leader brings extensive expertise in leading breakthrough therapies through clinical development to marketing approval Satellos Bioscience Inc. (TSX:MSCL, OTCQB:MSCLF) ("Satellos" or the "Company"), a clinical-stage biotechnology company developing life-improving medicines to treat degenerative muscle diseases, today announced the appointment of Antoinette Paone as Chief Development Officer ("CDO") and Head of Regulatory Affairs. Ms. Paone brings extensive experience leading regulatory strategy from clinical development through approval, including her work on Kalydeco and Orkambi at Vertex Pharmaceuticals (NASDAQ:VRTX). She joins Satellos from Generation Bio (NASDAQ:G

    1/29/26 7:00:00 AM ET
    $GBIO
    $VRTX
    Biotechnology: Pharmaceutical Preparations
    Health Care

    NodThera Appoints Geoff McDonough, M.D., as Independent Board Member

    BOSTON, Dec. 16, 2025 (GLOBE NEWSWIRE) -- NodThera, a clinical-stage biotechnology company pioneering a paradigm shift in the treatment of chronic inflammatory diseases through selective NLRP3 inhibition, today announced the appointment of Geoff McDonough, M.D., as an Independent Board Member. Dr. McDonough brings more than two decades of leadership experience spanning R&D, commercial strategy, and global company building. He most recently served as President and Chief Executive Officer of Generation Bio (NASDAQ:GBIO). Dr. McDonough previously served as President and CEO of Sobi, overseeing substantial portfolio expansion and international growth. Earlier in his career, Dr. McDonough spen

    12/16/25 8:00:00 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $GBIO
    Insider Purchases

    Insider purchases reveal critical bullish sentiment about the company from key stakeholders. See them live in this feed.

    View All

    Director Quinn Anthony G. bought $203,209 worth of shares (210,791 units at $0.96), increasing direct ownership by 238% to 299,286 units (SEC Form 4)

    4 - Generation Bio Co. (0001733294) (Issuer)

    1/14/25 4:05:17 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Appelhans Dannielle bought $14,339 worth of shares (8,000 units at $1.79), increasing direct ownership by 5% to 12,637 units (SEC Form 4)

    4 - Generation Bio Co. (0001733294) (Issuer)

    12/11/23 4:30:19 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Appelhans Dannielle bought $18,000 worth of shares (12,000 units at $1.50) (SEC Form 4)

    4 - Generation Bio Co. (0001733294) (Issuer)

    12/6/23 4:30:13 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $GBIO
    Leadership Updates

    Live Leadership Updates

    View All

    NodThera Appoints Geoff McDonough, M.D., as Chief Executive Officer

    Dr. McDonough brings global company-building, commercial strategy, and R&D leadership experience to the Company ahead of key clinical milestones NodThera plans to report results from two Phase 2 cardiometabolic trials RESOLVE-1 and RESOLVE-2 in mid-2026 and third quarter 2026 respectively Company preparing to begin cardiometabolic Phase 3 trial in 1H 2027 BOSTON, Feb. 04, 2026 (GLOBE NEWSWIRE) -- NodThera, the leading clinical-stage NLRP3 company developing a portfolio of best-in-class brain-penetrant and immune-targeted oral inhibitors to address unmet needs in cardiometabolic and neuroinflammatory diseases driven by the NLRP3/IL-6/IL-1 inflammation pathway, announced the appointment o

    2/4/26 8:00:00 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Satellos Appoints Antoinette Paone as Chief Development Officer and Head of Regulatory Affairs

    Experienced industry leader brings extensive expertise in leading breakthrough therapies through clinical development to marketing approval Satellos Bioscience Inc. (TSX:MSCL, OTCQB:MSCLF) ("Satellos" or the "Company"), a clinical-stage biotechnology company developing life-improving medicines to treat degenerative muscle diseases, today announced the appointment of Antoinette Paone as Chief Development Officer ("CDO") and Head of Regulatory Affairs. Ms. Paone brings extensive experience leading regulatory strategy from clinical development through approval, including her work on Kalydeco and Orkambi at Vertex Pharmaceuticals (NASDAQ:VRTX). She joins Satellos from Generation Bio (NASDAQ:G

    1/29/26 7:00:00 AM ET
    $GBIO
    $VRTX
    Biotechnology: Pharmaceutical Preparations
    Health Care

    NodThera Appoints Geoff McDonough, M.D., as Independent Board Member

    BOSTON, Dec. 16, 2025 (GLOBE NEWSWIRE) -- NodThera, a clinical-stage biotechnology company pioneering a paradigm shift in the treatment of chronic inflammatory diseases through selective NLRP3 inhibition, today announced the appointment of Geoff McDonough, M.D., as an Independent Board Member. Dr. McDonough brings more than two decades of leadership experience spanning R&D, commercial strategy, and global company building. He most recently served as President and Chief Executive Officer of Generation Bio (NASDAQ:GBIO). Dr. McDonough previously served as President and CEO of Sobi, overseeing substantial portfolio expansion and international growth. Earlier in his career, Dr. McDonough spen

    12/16/25 8:00:00 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $GBIO
    Financials

    Live finance-specific insights

    View All

    XOMA Royalty Enters into Agreement to Acquire Generation Bio

    - Acquisition provides XOMA Royalty with potential milestone and royalty payments under Generation Bio's collaboration with Moderna - - Generation Bio's cell-targeted lipid nanoparticles (ctLNP) delivery platform for small interfering RNA (siRNA) and other nucleic acid therapies to be included in XOMA Royalty's portfolio - EMERYVILLE, Calif. and CAMBRIDGE, Mass., Dec. 15, 2025 (GLOBE NEWSWIRE) -- XOMA Royalty Corporation ("XOMA Royalty") (NASDAQ:XOMA), the biotech royalty aggregator, announced today it has entered into an agreement to acquire Generation Bio Co. ("Generation Bio") (NASDAQ:GBIO) for a cash price of $4.2913 per share at the closing of the merger. Generation Bio stockholders

    12/15/25 5:00:00 PM ET
    $GBIO
    $XOMA
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $GBIO
    Large Ownership Changes

    This live feed shows all institutional transactions in real time.

    View All

    Amendment: SEC Form SC 13G/A filed by Generation Bio Co.

    SC 13G/A - Generation Bio Co. (0001733294) (Subject)

    12/9/24 6:18:02 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Amendment: SEC Form SC 13G/A filed by Generation Bio Co.

    SC 13G/A - Generation Bio Co. (0001733294) (Subject)

    11/14/24 1:22:38 PM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form SC 13G/A filed by Generation Bio Co. (Amendment)

    SC 13G/A - Generation Bio Co. (0001733294) (Subject)

    2/14/24 10:03:03 AM ET
    $GBIO
    Biotechnology: Pharmaceutical Preparations
    Health Care