CARLSBAD, Calif., Sept. 9, 2024 /PRNewswire/ -- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced a proposed underwritten public offering of $500.0 million of its common stock. Ionis intends to grant the underwriters a 30-day option to purchase up to an additional $75.0 million of shares of its common stock offered in the public offering on the same terms and conditions. Ionis intends to use the net proceeds from the offering to fund its independent commercial launches, late-stage clinical programs ...