Atlas Venture Fund X, L.P.
10% Owner · 1 filing · Latest: Feb 9, 2026
Generation Bio Co.
| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|
KYMR | Atlas Venture Fund X, L.P. | — | Dec 12, 2025 | Proposed Sale | $89.68 | 570 | $51.1K | — | |
KYMR | Atlas Venture Fund X, L.P. | — | Dec 11, 2025 | Proposed Sale | $87.81 | 5,125 | $450.0K | — | |
KYMR | Atlas Venture Fund X, L.P. | — | Dec 10, 2025 | Proposed Sale | $89.89 | 193,040 | $17.4M | — | |
IRON | Atlas Venture Fund X, LP | — | Oct 17, 2025 | Proposed Sale | $74.36 | 50,000 | $3.7M | — | |
IRON | Atlas Venture Fund X, LP | — | Oct 16, 2025 | Proposed Sale | $76.98 | 1,425 | $109.7K | — | |
IRON | Atlas Venture Fund X, LP | — | Oct 15, 2025 | Proposed Sale | $73.00 | 22,160 | $1.6M | — | |
IRON | Atlas Venture Fund X, L.P. | — | Aug 22, 2025 | Proposed Sale | $59.75 | 4,080 | $243.8K | — | |
IRON | Atlas Venture Fund X, L.P. | — | Aug 14, 2025 | Proposed Sale | $61.10 | 12,862 | $785.9K | — | |
IRON | Atlas Venture Fund X, L.P. | — | Aug 13, 2025 | Proposed Sale | $59.03 | 44,520 | $2.6M | — | |
IRON | Atlas Venture Fund X, L.P. | — | Aug 5, 2025 | Proposed Sale | $59.79 | 705 | $42.2K | — | |
IRON | Atlas Venture Fund X, L.P. | — | Jul 30, 2025 | Proposed Sale | $59.80 | 15,146 | $905.7K | — | |
IRON | Atlas Venture Fund X, L.P. | — | Jul 24, 2025 | Proposed Sale | $60.94 | 23,245 | $1.4M | — | |
IRON | Atlas Venture Fund X, L.P. | — | Jul 23, 2025 | Proposed Sale | $60.74 | 53,215 | $3.2M | — | |
IRON | Atlas Venture Fund X, L.P. | — | Jul 18, 2025 | Proposed Sale | $57.79 | 1,184 | $68.4K | — | |
IRON | Atlas Venture Fund X, L.P. | — | Feb 5, 2025 | Proposed Sale | $54.32 | 112,211 | $6.1M | — | |
IRON | Atlas Venture Fund X, L.P. | — | Feb 4, 2025 | Proposed Sale | $54.99 | 6,350 | $349.2K | — | |
IRON | Atlas Venture Fund X, L.P. | — | Feb 3, 2025 | Proposed Sale | $55.80 | 6,439 | $359.3K | — |
← Previous
Page 2 of 2