0000874015-25-000102.txt : 20250304 0000874015-25-000102.hdr.sgml : 20250304 20250304171655 ACCESSION NUMBER: 0000874015-25-000102 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20250228 FILED AS OF DATE: 20250304 DATE AS OF CHANGE: 20250304 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: O'NEIL PATRICK R. CENTRAL INDEX KEY: 0001564926 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-19125 FILM NUMBER: 25706392 MAIL ADDRESS: STREET 1: C/O IONIS PHARMACEUTICALS, INC. STREET 2: 2855 GAZELLE COURT CITY: CARLSBAD STATE: CA ZIP: 92010 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: IONIS PHARMACEUTICALS INC CENTRAL INDEX KEY: 0000874015 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 330336973 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2855 GAZELLE COURT CITY: CARLSBAD STATE: CA ZIP: 92010 BUSINESS PHONE: 7609319200 MAIL ADDRESS: STREET 1: 2855 GAZELLE COURT CITY: CARLSBAD STATE: CA ZIP: 92010 FORMER COMPANY: FORMER CONFORMED NAME: ISIS PHARMACEUTICALS INC DATE OF NAME CHANGE: 19930328 4 1 edgardoc.xml PRIMARY DOCUMENT X0508 4 2025-02-28 0 0000874015 IONIS PHARMACEUTICALS INC IONS 0001564926 O'NEIL PATRICK R. 2855 GAZELLE COURT CARLSBAD CA 92010 0 1 0 0 EVP CLO & General Counsel 0 Common Stock 2025-02-28 4 J 0 554 28.2115 A 56799 D Reporting shares purchased under the Ionis Pharmaceuticals, Inc. Amended and Restated 2000 Employee Stock Purchase Plan on February 28,2025. These shares may not be sold until August 28, 2025. Patrick R. O'Neil 2025-03-04