GEOFF MCDONOUGH

CIK 1732701 · PRESIDENT AND CEO · last filed 2026-02-09

GEOFF MCDONOUGH is a PRESIDENT AND CEO who has filed 35 SEC Form 4 insider transactions across 3 companies since 2019. The most recent filing, for GBIO, was dated Feb 9, 2026. Across all open-market trades the lifetime net is −$1.1M, making them a net seller over the disclosed history.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$0

Companies

3

Total Filings

35

Lifetime Open-Market Net

-$1.08M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
Generation Bio Co. (GBIO) Delisted PRESIDENT AND CEO 0 $5.34 $0 -$1.08M 29 2026-02-09
Third Harmonic Bio, Inc. (THRD) Delisted Director $5.38 $0 1 2024-03-28
Surface Oncology, Inc. (SURF) Delisted Director $1.07 $0 5 2021-06-10

Recent Filings

35 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-02-09 Generation Bio Co. (GBIO) Delisted Mixed −188,638 $0 EDGAR
2026-02-04 Generation Bio Co. (GBIO) Delisted Mixed +1,032 -$3.1K EDGAR
2026-01-16 Generation Bio Co. (GBIO) Delisted Mixed +258 -$773 EDGAR
2025-11-21 Generation Bio Co. (GBIO) Delisted Mixed +366 -$1.6K EDGAR
2025-10-17 Generation Bio Co. (GBIO) Delisted Mixed +372 -$1.0K EDGAR
2025-07-17 Generation Bio Co. (GBIO) Delisted Mixed +3,725 -$659 EDGAR
2025-04-17 Generation Bio Co. (GBIO) Delisted Mixed +3,726 -$569 EDGAR
2025-01-17 Generation Bio Co. (GBIO) Delisted Mixed +3,446 -$1.6K EDGAR
2025-01-14 Generation Bio Co. (GBIO) Delisted Grant (A) $0 EDGAR
2024-10-17 Generation Bio Co. (GBIO) Delisted Mixed +3,726 -$3.7K EDGAR
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.