Generation Bio Co. - GBIO
Insiders (Form 4) · last 180 days · showing up to 200 transactions
· Form 144 is shown in the SEC filings tab
· Updating…
Visible: 0
Transaction codes:
P = Open-market purchase ·
S = Open-market sale ·
A = Grant/award ·
M = Exercise/conversion of derivative ·
G = Gift ·
F = Tax withholding ·
J = Other ·
A/D:
A = Acquired (buy/receive) ·
D = Disposed (sell/give)
| Filed | Owner | Title | Code | A/D | Shares | Price | Value | Shares after | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Feb 09, 2026 | — | U | D | 60.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 116,693.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 711,193.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 5,200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 4,752.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 5,200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 4,246.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 53,475.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 5,200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 60.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 116,693.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 711,193.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 5,200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 7,283.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 29,928.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 5,200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 21,357.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 24,046.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 16,874.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 90,168.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 50,624.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 37,499.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 25,099.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 19,903.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 27,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 22,646.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 138,492.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 5,200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 4,246.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | INTERIM CEO AND PRESIDENT | D | D | 7,630.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | INTERIM CEO AND PRESIDENT | D | D | 25,102.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | INTERIM CEO AND PRESIDENT | D | D | 11,883.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | INTERIM CEO AND PRESIDENT | D | D | 10,710.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | INTERIM CEO AND PRESIDENT | U | D | 3,759.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 950.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 1,763.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 550.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 1,877.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 35,525.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 249.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 5,940.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 2,800.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 2,585.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 1,399.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 621.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 1,061.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 283.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | D | D | 1,192.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | CHIEF FINANCIAL OFFICER | U | D | 2,072.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,920.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 1,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 5,200.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 13,142.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 6,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 2,500.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,840.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | D | D | 3,000.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 736.0 | — | — | 0.0 | View | |
| Feb 09, 2026 | — | U | D | 1,263.0 | — | — | 0.0 | View | |
| Feb 04, 2026 | Chief Financial Officer | M | D | 235.0 | 0.0 | 0.0 | 0.0 | View | |
| Feb 04, 2026 | Chief Financial Officer | F | D | 72.0 | 5.64 | 406.08 | 2,072.0 | View | |
| Feb 04, 2026 | Chief Financial Officer | M | A | 235.0 | — | — | 2,144.0 | View | |
| Feb 04, 2026 | — | M | D | 1,582.0 | 0.0 | 0.0 | 0.0 | View | |
| Feb 04, 2026 | — | F | D | 550.0 | 5.64 | 3,102.0 | 138,492.0 | View | |
| Feb 04, 2026 | — | M | A | 1,582.0 | — | — | 139,042.0 | View | |
| Feb 04, 2026 | INTERIM CEO & PRESIDENT | M | D | 1,673.0 | 0.0 | 0.0 | 0.0 | View | |
| Feb 04, 2026 | INTERIM CEO & PRESIDENT | F | D | 495.0 | 5.64 | 2,791.8 | 3,759.0 | View | |
| Feb 04, 2026 | INTERIM CEO & PRESIDENT | M | A | 1,673.0 | — | — | 4,254.0 | View | |
| Jan 16, 2026 | Chief Financial Officer | M | D | 59.0 | 0.0 | 0.0 | 235.0 | View | |
| Jan 16, 2026 | Chief Financial Officer | F | D | 17.0 | 5.64 | 95.88 | 1,909.0 | View | |
| Jan 16, 2026 | Chief Financial Officer | M | A | 59.0 | — | — | 1,926.0 | View | |
| Jan 16, 2026 | — | M | A | 395.0 | 0.0 | 0.0 | 1,582.0 | View | |
| Jan 16, 2026 | — | F | D | 137.0 | 5.64 | 772.68 | 137,460.0 | View | |
| Jan 16, 2026 | — | M | A | 395.0 | — | — | 137,597.0 | View | |
| Jan 16, 2026 | CHIEF LEGAL OFFICER | M | D | 335.0 | 0.0 | 0.0 | 1,673.0 | View | |
| Jan 16, 2026 | CHIEF LEGAL OFFICER | F | D | 99.0 | 5.64 | 558.36 | 2,581.0 | View | |
| Jan 16, 2026 | CHIEF LEGAL OFFICER | M | A | 335.0 | — | — | 2,680.0 | View | |
| Nov 21, 2025 | — | M | D | 659.0 | 0.0 | 0.0 | 1,977.0 | View | |
| Nov 21, 2025 | — | F | D | 293.0 | 5.51 | 1,614.43 | 137,202.0 | View | |
| Nov 21, 2025 | — | M | A | 659.0 | — | — | 137,495.0 | View |