05:26 PM EDT, 09/03/2025 (MT Newswires) -- Sotera Health ( SHC ) announced late Wednesday the launch of a secondary offering of 20 million shares of its common stock.

The shares are being sold by certain affiliates of Warburg Pincus and GTCR as selling shareholders. The lab testing company will not receive proceeds from the sale.

Shares of Sotera fell over 5% in after-market trading activity.