Karyopharm Therapeutics Inc.

KPTI·NASDAQ·$8.97Share Price as of 11/2·$77MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/13/26 10-QQ1 ended 03/31/2605/14/26 10-KFY 202502/13/26 10-QQ3 ended 09/30/2511/03/25 10-QQ2 ended 06/30/2508/11/25

Disclosures

8-KCurrent report10/22/26 8-KCurrent report10/14/26 8-KCurrent report09/18/26 8-KCurrent report09/11/26 8-KCurrent report08/31/26

Prospectuses and Registrations

S-8Registration of securities for employees05/27/26 S-8Registration of securities for employees05/27/26 S-3Shelf registration05/04/26 S-3Shelf registration05/04/26 424B3Prospectus11/24/25

Proxies

DEF 14ADefinitive proxy04/13/26 DEF 14ADefinitive proxy01/09/26 PRE 14APreliminary proxy12/30/25 DEF 14ADefinitive proxy04/14/25 DEFA14AAdditional proxy materials04/14/25

Ownership

SC 13G/ABeneficial ownership (amended)10/28/26 Form 4Insider transaction10/19/26 SC 13G/ABeneficial ownership (amended)10/08/26 Form 4Insider transaction10/02/26 SC 13G/ABeneficial ownership (amended)09/25/26

Other

EFFECTRequest for effectiveness05/14/26 EFFECTRequest for effectiveness05/14/26 CORRESPCorrespondence with the SEC05/12/26 CORRESPCorrespondence with the SEC05/12/26 UPLOADLetter from the SEC05/07/26