Tempus AI filed an amended Form S-4/A with the SEC on October 2, 2026, providing updated details on its pending acquisition of Personalis, Inc. Under the merger agreement, Personalis will become a wholly owned subsidiary of Tempus.
Each Personalis share will be converted into Tempus Class A common stock based on a floating exchange ratio, with a floor price of $48.42 per Tempus share. Tempus may also elect to pay $16.25 in cash for up to 50% of Personalis shares.
The deal is subject to approval by Personalis stockholders and other customary closing conditions.