Form 4 Tracker
Robert Nelsen

10% Owner; Director, 10% Owner · 6 filings · Latest: Jun 22, 2026

Kardigan, Inc.
Lyell Immunopharma, Inc.
Prime Medicine, Inc.
Sana Biotechnology, Inc.
Seaport Therapeutics, Inc.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
KARD
Robert NelsenDirector, 10% OwnerJun 22, 2026
Purchase
$16.001,250,000$20.0M15,042,035
SPTX
Robert Nelsen10% OwnerMay 4, 2026
Purchase
$18.001,100,000$19.8M6,294,951
LYEL
Robert Nelsen10% OwnerMar 6, 2026
Purchase
$25.61488,090$12.5M1,426,528