0001209191-23-010509.txt : 20230217 0001209191-23-010509.hdr.sgml : 20230217 20230217160757 ACCESSION NUMBER: 0001209191-23-010509 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230215 FILED AS OF DATE: 20230217 DATE AS OF CHANGE: 20230217 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Poulton Stuart CENTRAL INDEX KEY: 0001942597 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36167 FILM NUMBER: 23642531 MAIL ADDRESS: STREET 1: 85 WELLS AVENUE CITY: NEWTON STATE: MA ZIP: 02459 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Karyopharm Therapeutics Inc. CENTRAL INDEX KEY: 0001503802 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 263931704 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 85 WELLS AVENUE STREET 2: SECOND FLOOR CITY: NEWTON STATE: MA ZIP: 02459 BUSINESS PHONE: 617-658-0600 MAIL ADDRESS: STREET 1: 85 WELLS AVENUE STREET 2: SECOND FLOOR CITY: NEWTON STATE: MA ZIP: 02459 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2023-02-15 0 0001503802 Karyopharm Therapeutics Inc. KPTI 0001942597 Poulton Stuart C/O KARYOPHARM THERAPEUTICS INC. 85 WELLS AVENUE NEWTON MA 02459 0 1 0 0 EVP, Chief Development Officer Common Stock 2023-02-15 4 S 0 5665 3.19 D 64335 D Common Stock 2023-02-15 4 S 0 8 3.23 D 64327 D Common Stock 2023-02-15 4 S 0 196 3.16 D 64131 D This transaction was a broker-assisted sale of shares to satisfy the payment of withholding tax liability incurred upon the vesting of restricted stock units and does not represent a discretionary trade by the reporting person. /s/ Nancy Smith as Attorney-in-Fact for Stuart Poulton 2023-02-17