Karyopharm Therapeutics Ownership & Insider Activity

Karyopharm Therapeutics (KPTI) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 15.5% of shares outstanding. Institutional investors hold 21.7%. Over the past 90 days, insiders made 4 sales worth $3K.

Shares Outstanding

22.681M

Shares Float

22.567M

Insider Shares Owned

3.483M

Insider % Owned

15.5%

Institutional Shares Held

4.928M

Institutional % Held

21.7%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$3K total

Net Activity

Net Selling

Net Value (90d)

-$3K

Karyopharm Therapeutics Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 16, 2026	Kristin Abate	CHIEF ACCOUNTING OFFICER	SELL	4.788K	$0.34	$2K
Oct 1, 2026	Kristin Abate	CHIEF ACCOUNTING OFFICER	SELL	378.000	$1.19	$450
Sep 1, 2026	Kristin Abate	CHIEF ACCOUNTING OFFICER	SELL	19.000	$2.02	$38
Jul 28, 2026	Stuart Poulton	EVP, CHIEF DEVELOPMENT OFFICER	SELL	189.000	$7.10	$1K
May 13, 2026	Stuart Poulton	EVP, CHIEF DEVELOPMENT OFFICER	GRANT	493.000	$9.50	$4K
May 13, 2026	Reshma Rangwala	EVP & CHIEF MEDICAL OFFICER	GRANT	539.000	$9.50	$4K
May 13, 2026	Sohanya Cheng	EVP & CHIEF COMMERCIAL OFFICER	GRANT	623.000	$9.50	$3K
May 13, 2026	Kristin Abate	CHIEF ACCOUNTING OFFICER	GRANT	68.000	$9.50	$504
May 13, 2026	Richard Paulson	PRESIDENT AND CEO	GRANT	2.717K	$9.50	$21K
May 13, 2026	Michael Mano	EVP, CLO&SECRETARY	GRANT	434.000	$9.50	$3K