PDF Solutions Upsizes Public Offering

PDF Solutions, a provider of data solutions for the semiconductor and electronics industry, announced and subsequently priced an upsized underwritten public offering of its common stock. The offering consists of 4,568,308 shares at $44.00 per share. Of these, 1,261,384 shares are being sold by PDF Solutions, and 3,306,924 shares are being sold by Advantest, a selling stockholder. The offering size was increased from the initial announcement of 3,806,924 shares. PDF Solutions expects to receive approximately $55.5 million in gross proceeds from its portion of the sale. The company also granted the underwriters a 30-day option to purchase an additional 685,246 shares. Morgan Stanley is the sole active book-running manager, with Wells Fargo — Wells Fargo, Société Générale, and Needham & Company also serving as book-running managers, and Rosenblatt Securities, D.A. Davidson & Co., and Northland Capital Markets as co-managers. The offering is expected to close on May 15, 2026.