Person agrees to merger with Tempus after HSR waiting period expires
Person has agreed to a merger with Tempus, becoming a wholly owned subsidiary. The HSR waiting period expired on Oct 2, 2026. The deal requires stockholder approval and other conditions. Tempus filed relevant documents with the SEC.
How this was made

The 30-second read
Why it matters
The merger creates a direct subsidiary structure, likely unlocking synergies and a premium for PSNL shareholders.
Market read
Primary M&A news that can move PSNL stock; no broader market effect.
What to watch
Potential antitrust review and integration risks for Tempus.
Background
Personalis filed an 8‑K reporting the merger; Tempus filed Form S‑4 and an amendment. The HSR waiting period expired on Oct 2, 2026.
Ticker impact
Personalis (PSNL) entered a definitive merger agreement to become a wholly owned subsidiary of Tempus after the HSR waiting period expired.
potential upside as the merger progresses and closing conditions are met
First‑report M&A disclosure; merger creates a direct subsidiary relationship, removing uncertainty and may trigger a premium to PSNL shares.
Market effects
Consolidation in the health‑tech/data analytics sector may pressure peers.
Limited to US biotech/health‑tech investors.
Minimal global impact beyond sector.
Counterpoint
Deal could face regulatory or shareholder approval delays, weighing on PSNL.
Key entities
- CompanyPersonalis, Inc.
Target company in the merger, ticker PSNL.
- CompanyTempus
Acquiring company, not US‑listed.