Atlas Venture Opportunity Fund I, 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 |
|---|---|---|---|---|---|---|---|---|---|
DYN | Atlas Venture Opportunity Fund I, LP | — | Apr 22, 2026 | Proposed Sale | $19.21 | 59,663 | $1.1M | — | |
KYMR | Atlas Venture Opportunity Fund I, LP | — | Apr 22, 2026 | Proposed Sale | $88.07 | 12 | $1.1K | — | |
DYN | Atlas Venture Opportunity Fund I, LP | — | Apr 21, 2026 | Proposed Sale | $20.02 | 56,820 | $1.1M | — | |
DYN | Atlas Venture Opportunity Fund I, LP | — | Apr 20, 2026 | Proposed Sale | $20.41 | 56,355 | $1.2M | — | |
KYMR | Atlas Venture Opportunity Fund I, LP | — | Apr 15, 2026 | Proposed Sale | $89.87 | 385 | $34.6K | — | |
KYMR | Atlas Venture Opportunity Fund I, LP | — | Mar 2, 2026 | Proposed Sale | $91.35 | 25,000 | $2.3M | — | |
IRON | Atlas Venture Opportunity Fund I, LP | — | Dec 17, 2025 | Proposed Sale | $91.47 | 393 | $35.9K | — | |
IRON | Atlas Venture Opportunity Fund I, LP | — | Dec 16, 2025 | Proposed Sale | $92.00 | 10,898 | $1.0M | — | |
IRON | Atlas Venture Opportunity Fund I, L.P. | — | Dec 16, 2025 | Proposed Sale | $91.47 | 25,000 | $2.3M | — | |
IRON | Atlas Venture Opportunity Fund I, L.P. | — | Dec 15, 2025 | Proposed Sale | $92.00 | 17,433 | $1.6M | — | |
IRON | Atlas Venture Opportunity Fund I, LP | — | Dec 15, 2025 | Proposed Sale | $91.85 | 15,401 | $1.4M | — | |
KYMR | Atlas Venture Opportunity Fund I, L.P. | — | Dec 12, 2025 | Proposed Sale | $89.68 | 108 | $9.7K | — | |
IRON | Atlas Venture Opportunity Fund I, LP | — | Dec 12, 2025 | Proposed Sale | $93.60 | 23,701 | $2.2M | — | |
KYMR | Atlas Venture Opportunity Fund I, L.P. | — | Dec 11, 2025 | Proposed Sale | $87.81 | 976 | $85.7K | — | |
KYMR | Atlas Venture Opportunity Fund I, L.P. | — | Dec 10, 2025 | Proposed Sale | $89.89 | 36,769 | $3.3M | — | |
IRON | Atlas Venture Opportunity Fund I, L.P. | — | Oct 17, 2025 | Proposed Sale | $89.94 | 35,000 | $3.1M | — | |
IRON | Atlas Venture Opportunity Fund I, L.P. | — | Oct 16, 2025 | Proposed Sale | $76.98 | 1,425 | $109.7K | — | |
IRON | Atlas Venture Opportunity Fund I, L.P. | — | Oct 15, 2025 | Proposed Sale | $73.00 | 22,160 | $1.6M | — | |
IRON | Atlas Venture Opportunity Fund I, L.P. | — | Oct 8, 2025 | Proposed Sale | $67.89 | 71,961 | $4.9M | — | |
IRON | Atlas Venture Opportunity Fund I, L.P. | — | Oct 7, 2025 | Proposed Sale | $69.28 | 18,039 | $1.2M | — |