04:26 PM EDT, 06/11/2025 (MT Newswires) -- Insmed ( INSM ) said late Wednesday it proposed an underwritten public offering of $650 million of common shares.

The company plans to grant the underwriters a 30-day option to buy up to an additional $97.5 million of the shares.

Insmed ( INSM ) said it will sell all shares in the offering, which is subject to market and other conditions, with no guarantee of completion or certainty around its size or terms.

Shares of the company fell 1.5% in after-hours activity.

Price: 96.50, Change: -1.48, Percent Change: -1.51