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Shuttingdown

Generation Bio Co.

Pharmaceutical Preparations · CAMBRIDGE · MA

Distress signal

Moderate confidence (50%)

Updated Oct 9, 2026, 12:04 AM

What is happening

Derived by rule set status-rules-2026.09.7

An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.

Latest material event: Generation Bio Co. deregistered its securities (Feb 19, 2026)

Timeline

Every material event, newest first. History is never overwritten.

  1. Generation Bio Co. deregistered its securities

    Feb 19, 2026

    Registration withdrawn

    • SEC EDGAR — “15-12G 1 gbio-20260218x1512g.htm 15-12G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 001-39319 Generation Bio Co. (Exact name of registrant as specified in its charter) 2200 Powell Street, Suite 310 Emeryville, California 94608 (510) 204-7200 (Address, including zip code, and telephone number, including area code, of r…”

  2. Generation Bio Co. was delisted from its exchange

    Feb 9, 2026

    Delisting effective

    • SEC EDGAR — “X0203 0001354457 Nasdaq Stock Market LLC 0001733294 Generation Bio Co. 001-39319 301 Binney Street Cambridge MA MASSACHUSETTS 02142 617 655 7500 Common Stock 17 CFR 240.12d2-2(a)(3) Tara Petta AVP 2026-02-09”

  3. Generation Bio Co. received a delisting notice from its exchange

    Feb 6, 2026

    Delisting notice received

    • SEC EDGAR — “Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. The information set forth in Item 2.01 of this Current Report on Form 8-K is incorporated by reference into this Item 3.01. On February 6, 2026, the Company (i) notified The Nasdaq Global Select Market ( Nasdaq ) of the anticipated consummation of the Merger and (ii) requested that Nasdaq suspend trading of the Company Common Stock, effective as of 8:00 p.m., Eastern Time, on February 6, 2026, and, following the Effective Time, file with the SEC a notification of removal from listing…”

Company information

Founded
—
Employees (estimate)
—
Industry
Pharmaceutical Preparations
Subindustry
—
SEC CIK
0001733294
Website
—
LinkedIn
—
Headquarters
CAMBRIDGE, MA
Also known as
Generation Bio Co.
Legal entities
Generation Bio Co., Generation Bio Co.

Sources

Every material source used to build this profile.

  • SEC Company Submissions (TIER 1 · UNVERIFIED)

    Generation Bio Co. — Pharmaceutical Preparations (SIC 2834) — CAMBRIDGE, MA
    View source record

  • SEC EDGAR (TIER 1 · UNVERIFIED)

    15-12G 1 gbio-20260218x1512g.htm 15-12G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 001-39319 Generation Bio Co. (Exact name of registrant as specified in its charter) 2200 Powell Street, Suite 310 Emeryville, California 94608 (510) 204-7200 (Address, including zip code, and telephone number, including area code, of r…
    View source record

  • SEC EDGAR (TIER 1 · UNVERIFIED)

    X0203 0001354457 Nasdaq Stock Market LLC 0001733294 Generation Bio Co. 001-39319 301 Binney Street Cambridge MA MASSACHUSETTS 02142 617 655 7500 Common Stock 17 CFR 240.12d2-2(a)(3) Tara Petta AVP 2026-02-09
    View source record

  • SEC EDGAR (TIER 1 · UNVERIFIED)

    Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. The information set forth in Item 2.01 of this Current Report on Form 8-K is incorporated by reference into this Item 3.01. On February 6, 2026, the Company (i) notified The Nasdaq Global Select Market ( Nasdaq ) of the anticipated consummation of the Merger and (ii) requested that Nasdaq suspend trading of the Company Common Stock, effective as of 8:00 p.m., Eastern Time, on February 6, 2026, and, following the Effective Time, file with the SEC a notification of removal from listing…
    View source record

Status history

Every derived status, with the rule that produced it.

  • DISTRESS_SIGNAL → DISTRESS_SIGNALLISTING_STANDARDS_WARNING · Sep 18, 2026, 01:28 AM

    An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.

  • DISTRESS_SIGNAL → DISTRESS_SIGNALLISTING_STANDARDS_WARNING · Sep 18, 2026, 01:13 AM

    An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.

  • DISTRESS_SIGNAL → DISTRESS_SIGNALPUBLIC_LISTING_ENDED · Sep 15, 2026, 12:31 PM

    The company stopped being publicly listed. That happens to failing companies and to acquired ones alike.

  • DISTRESS_SIGNAL → DISTRESS_SIGNALPUBLIC_LISTING_ENDED · Sep 13, 2026, 12:05 AM

    The company stopped being publicly listed. That happens to failing companies and to acquired ones alike.

  • DISTRESS_SIGNAL → DISTRESS_SIGNALPUBLIC_LISTING_ENDED · Sep 8, 2026, 04:04 AM

    The company stopped being publicly listed. That happens to failing companies and to acquired ones alike.

  • UNKNOWN → DISTRESS_SIGNALPUBLIC_LISTING_ENDED · Sep 8, 2026, 04:04 AM

    An exchange warned the company it no longer meets the listing standards. Companies regain compliance often.