Portman David J. sold LONA
October 26, 2026 · Form 4 insider transaction
Portman David J. sold 5,502,402 shares of LeonaBio, Inc. at $3149.47 per share, a transaction worth $17.33B. The trade was recorded as open-market purchase and disclosed on an SEC Form 4, filed 2 days after the transaction.
Footnotes
The shares are held by Sermonix Pharmaceuticals, Inc. of which Dr. Portman is the Chief Executive Officer. This Form 4 is being filed to report Dr. Portman's voting control over such securities, but Dr. Portman's personal indirect beneficial ownership does not exceed 10% of the stock in the Issuer.; The Warrant does not expire.; The Warrant was held by Sermonix Pharmaceuticals, Inc. of which Dr. Portman is the Chief Executive Officer. The Warrant was exercised on October 26, 2026, in part, into 3,149,740 Common Shares of Issuer, and the balance of the Warrant was assigned to Perceptive Xentogeny Venture Fund II, LP as a distribution-in-kind pursuant to a plan of distribution to the Sermonix Pharmaceuticals equity holders. Following the partial exercise and the assignment of the remaining Warrant rights, Sermonix Pharmaceuticals holds 3,149,740 Common Shares of Issuer.