Spencer R Berthelsen, Director, on June 01, 2026, sold 8,000 shares in Ionis Pharmaceuticals (IONS) for $605,360. Following the Form 4 filing with the SEC, Berthelsen has control over a total of 156,083 common shares of the company, with 156,013 shares held directly and 70 controlled indirectly.
SEC Filing:
https://www.sec.gov/Archives/edgar/data/874015/000087401526000188/xslF345X05/edgardoc.xml