On Jul. 20, 2026, Tempus AI, a technology company leading the adoption of AI to advance precision medicine and patient care, announced that it has entered into a definitive agreement to acquire Personalis. The acquisition will expand Tempus capabilities in minimal residual disease (MRD) and enhance its ability to support patients from diagnosis and treatment selection, to recurrence and monitoring.

Under the terms of the agreement, Personalis shareholders will receive consideration of $16.25 per share of common stock, representing a total enterprise value of $1.5 billion, net of Tempus’ existing ownership interest.

The complementary acquisition builds on the companies’ existing partnership, established in November 2023, through which Tempus invested in Personalis and commercializes the company’s NeXT Personal® MRD test. It brings together Tempus’ multimodal data platform, AI capabilities and precision oncology portfolio with Personalis’ industry-leading tumor-informed MRD technology to expand access to longitudinal monitoring, create new opportunities to advance biomarker discovery and enhance personalized cancer care.

With approximately 2.1 million new cancer diagnoses expected in the U.S. this year and more people living longer after a cancer diagnosis, the need for long-term monitoring is critical and continues to grow. Personalis’ ultrasensitive MRD tests are uniquely positioned to support this essential need. NeXT Personal has industry-leading sensitivity for detecting small traces of circulating tumor DNA, enabling tracking of cancer treatment response, detection of residual cancer and early detection of recurrence. With Medicare coverage in three indications and additional coverage anticipated, Personalis continues to demonstrate leadership in monitoring treatment response and cancer recurrence.

The closing is expected in late 2026 or early 2027, and is subject to Personalis’ shareholder approval, as well as receipt of applicable regulatory approvals and other customary closing conditions