On June 9, 2026 Parabilis Medicines, Inc. (the "Company") reported to have entered into a Stock Purchase Agreement (the "Purchase Agreement") with Regeneron Pharmaceuticals, Inc. ("Regeneron"), for the purchase of an aggregate of 4,166,666 shares (the "Shares") of its voting common stock, par value $0.0001 ("Common Stock"), at a per share price equal to 90% of the initial public offering ("IPO") price of $20.00 per share, through a private placement financing (the "Private Placement"), which took place concurrently with the IPO of the Company’s Common Stock. The Private Placement closed on June 11, 2026.

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Pursuant to the Purchase Agreement, Regeneron is entitled to certain piggyback registration rights. The Purchase Agreement contains customary representations, warranties and agreements by the Company and Regeneron.

The foregoing description of the Purchase Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Purchase Agreement, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated herein by reference. The representations, warranties and covenants contained in the Purchase Agreement were made solely for the benefit of the parties to thereto and may be subject to limitations agreed upon by the contracting parties. Accordingly, the Purchase Agreement is incorporated herein by reference only to provide investors with information regarding the terms thereof and not to provide investors with any other factual information regarding the Company or its business.

(Filing, Parabilis Medicines, JUN 9, 2026, View Source [SID1234666568])