Generation Bio Insider Trades

GBIO

Track insider trading activity from Generation Bio executives and directors. See which insiders are buying and selling GBIO stock.

Trades Last 12 Months

GBIO Price

All Insider Trades for Generation Bio

Sort by: Latest Trade Biggest Holding
Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Mcdonough Geoff Director
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$128k 24,046 shares
$5.34
$5.34
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$107k 20,120 shares
$5.34
$5.34
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Tender)Reported as Tender on SEC Form 4.
$320 60 shares
$5.34
$5.34
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$10.3k 1,920 shares
$5.34
$5.34
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Tender)Reported as Tender on SEC Form 4.
$70.2k 13,142 shares
$5.34
$5.34
Conway Kevin John CHIEF FINANCIAL OFFICER
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$299k 56,045 shares
$5.34
$5.34
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$87.7k 16,420 shares
$5.34
$5.34
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Tender)Reported as Tender on SEC Form 4.
$286k 53,475 shares
$5.34
$5.34
Rhodes Jason P Director
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$107k 20,120 shares
$5.34
$5.34
Howze Yalonda INTERIM CEO AND PRESIDENT
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Tender)Reported as Tender on SEC Form 4.
$20.1k 3,759 shares
$5.34
$5.34
Quinn Anthony G. Director
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Tender)Reported as Tender on SEC Form 4.
$38.9k 7,283 shares
$5.34
$5.34
Jonas Jeffrey M Director
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$10.3k 1,920 shares
$5.34
$5.34
Holding Value $0 0 shares
Last Trade
Feb 09, 2026 Sale (Tender)Reported as Tender on SEC Form 4.
$3.93k 736 shares
$5.34
$5.34
Holding Value $160k 30,000 shares
Last Trade
Jun 04, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$116k 30,000 shares
$3.87
$5.34
Kerr Douglas CHIEF MEDICAL OFFICER
Holding Value $2.07M 387,104 shares
Last Trade
Jan 29, 2024 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$95.4k 5,021 shares
$19.00
$5.34
Zimmermann Tracy CHIEF DEVELOPMENT OFFICER
Holding Value $270k 50,640 shares
Last Trade
Jan 29, 2024 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$95.4k 5,021 shares
$19.00
$5.34
Holding Value $3.25k 608 shares
Last Trade
Sep 29, 2021 Sale (Open Market)Shares sold on the open market or in a private sale.
$4.03M 16,586 shares
$242.90
$5.34
Seybold William 10% owner
Holding Value $8.11M 1,518,819 shares
Last Trade
Jun 16, 2020 Purchase (Conversion)Shares acquired or disposed through conversion of a derivative or other security.
$305M 1,518,819 shares
$201.00
$5.34
Holding Value $5.13M 961,215 shares
Last Trade
Jun 16, 2020 Purchase (Conversion)Shares acquired or disposed through conversion of a derivative or other security.
$193M 961,215 shares
$201.00
$5.34
Holding Value $15M 2,814,191 shares
Last Trade
Jun 16, 2020 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$161M 800,000 shares
$201.00
$5.34

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