Form 4 Tracker
Atlas Venture Opportunity Fund I, L.P.

10% Owner · 1 filing · Latest: Feb 9, 2026

Generation Bio Co.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
DYN
Atlas Venture Opportunity Fund I, LPAug 14, 2026
Proposed Sale
$25.96322,465$8.4M
DYN
Atlas Venture Opportunity Fund I, LPAug 13, 2026
Proposed Sale
$26.1763,643$1.7M
DYN
Atlas Venture Opportunity Fund I, LPJul 7, 2026
Proposed Sale
$22.8460,858$1.4M
DYN
Atlas Venture Opportunity Fund I, LPJul 6, 2026
Proposed Sale
$23.07100,019$2.3M
KYMR
Atlas Venture Opportunity Fund I, LPJun 29, 2026
Proposed Sale
$108.1210,473$1.1M
DYN
Atlas Venture Opportunity Fund I, LPJun 29, 2026
Proposed Sale
$20.9440,702$852.3K
DYN
Atlas Venture Opportunity Fund I, LPJun 26, 2026
Proposed Sale
$20.6164,411$1.3M
KYMR
Atlas Venture Opportunity Fund I, LPJun 26, 2026
Proposed Sale
$116.4657,451$6.7M
DYN
Atlas Venture Opportunity Fund I, LPJun 25, 2026
Proposed Sale
$20.335,019$102.0K
KYMR
Atlas Venture Opportunity Fund I, LPJun 25, 2026
Proposed Sale
$99.8767,329$6.7M
DYN
Atlas Venture Opportunity Fund I, LPJun 24, 2026
Proposed Sale
$20.2619,973$404.7K
KYMR
Atlas Venture Opportunity Fund I, LPJun 24, 2026
Proposed Sale
$98.2516,542$1.6M
DYN
Atlas Venture Opportunity Fund I, LPJun 23, 2026
Proposed Sale
$20.8730,774$642.3K
KYMR
Atlas Venture Opportunity Fund I, LPJun 23, 2026
Proposed Sale
$99.45173$17.2K
KYMR
Atlas Venture Opportunity Fund I, LPJun 22, 2026
Proposed Sale
$90.4334,152$3.1M
KYMR
Atlas Venture Opportunity Fund I, LPJun 18, 2026
Proposed Sale
$89.9014,128$1.3M
KYMR
Atlas Venture Opportunity Fund I, LPJun 17, 2026
Proposed Sale
$87.4412,902$1.1M
DYN
Atlas Venture Opportunity Fund I, LPMay 6, 2026
Proposed Sale
$17.4717,244$301.3K
DYN
Atlas Venture Opportunity Fund I, LPMay 5, 2026
Proposed Sale
$17.712,403$42.6K
DYN
Atlas Venture Opportunity Fund I, LPMay 4, 2026
Proposed Sale
$17.392,466$42.9K

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