POULTON STUART

PrivateCIK: 1942597
Location

NEWTON, MA

POULTON STUART (EVP, Chief Development Officer) sold 0.4% of their position (403.00 shares) of KARYOPHARM THERAPEUTICS INC. on the open market

Open‑market sale worth $3.8K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderPOULTON STUARTCIK 1942597
Officer· EVP, Chief Development Officer
Since Mar 2026
+493.00
Net shares
Net buyer
$3.8K
Total sold
1
Open market trades
0B · 1S
2
Total transactions
896.00 acquired · 403.00 disposed
Non-Derivative Transactions2

Common Stock

Direct
A · Award

Shares

+896.00

Price / share

Trade value

% of position

0.9%
5/13/2026
94.33K95.22K

Common Stock

Direct
S · Sale

Shares

403.00

Price / share

$9.50

Trade value

$3.83K

% of position

0.4%
5/14/2026
95.22K94.82K
Total

Net shares

+493.00

Net value

-$3.83K

Derivative Transactions0
No derivative transactions reported
POULTON STUART — Insider Transaction (Form 4) Filed May 15, 2026 | Finecho