---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-309101"
form_type: "8-K"
ticker: "PSNL"
cik: "0001527753"
company_name: "Personalis, Inc."
filed_at: "2026-07-20T21:26:43+00:00"
generated_at: "2026-07-20T21:28:07.885140+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# Personalis to be acquired by Tempus AI; $16.25 per share cash or stock election

## Summary
- Each Personalis share converts to $16.25 cash (if Tempus elects cash for up to 50% of shares) or Tempus shares based on exchange ratio (floor 0.3356, or $16.25/Tempus VWAP if above $48.42).
- Merck, holding ~13% of Personalis, enters voting agreement to support the merger.
- Termination fee of ~$76.8 million payable by either party under specified conditions.
- Closing conditions include stockholder approval, HSR clearance, and tax opinion.
- Transaction expected to close by April 20, 2027, with possible extensions.

## SEC filing metadata
- accession: 0001193125-26-309101
- form_type: 8-K
- ticker: PSNL
- cik: 0001527753
- company_name: Personalis, Inc.
- filed_at: 2026-07-20T21:26:43+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1527753/000119312526309101/0001193125-26-309101-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1527753/000119312526309101/d64399d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-309101
- JSON: https://secwatch.observer/filing/0001193125-26-309101.json
- Plain text: https://secwatch.observer/filing/0001193125-26-309101.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.