Poulton Stuart sold KPTI
February 17, 2026 · Form 4 insider transaction
Poulton Stuart sold 378 shares of Karyopharm Therapeutics Inc. at $8.63 per share, a transaction worth $3.3K. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Disposed (sell-side)
Shares
378
Price
$8.63
Total value
$3.3K
InsiderPoulton Stuart
RoleOfficer
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateFebruary 17, 2026
Filing dateFebruary 19, 2026
Shares owned after99,429
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
This transaction was effected pursuant to a durable automatic sale instruction plan adopted by the reporting person on May 18, 2022, and represents a broker-assisted sale of shares to satisfy the payment of withholding tax liability incurred upon the vesting of restricted stock units. The sale does not represent a discretionary trade by the reporting person.