Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000950170-25-100373
Filing Date
2025-07-30
Accepted
2025-07-30 16:56:49
Documents
1
Period of Report
2025-07-29

Document Format Files

Seq Description Document Type Size
1 4 ownership.html 4  
1 4 ownership.xml 4 3439
  Complete submission text file 0000950170-25-100373.txt   4842
Mailing Address 85 WELLS AVENUE SECOND FLOOR NEWTON MA 02459
Business Address 85 WELLS AVENUE SECOND FLOOR NEWTON MA 02459 617-658-0600
Karyopharm Therapeutics Inc. (Issuer) CIK: 0001503802 (see all company filings)

EIN.: 263931704 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

Mailing Address 85 WELLS AVENUE NEWTON MA 02459
Business Address
Poulton Stuart (Reporting) CIK: 0001942597 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-36167 | Film No.: 251167940