secwatch.observer — SEC 8-K summary
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Issuer:     Personalis, Inc. (PSNL)
CIK:        0001527753
Form:       8-K
Filed at:   2026-10-06T20:05:33+00:00
Accession:  0001193125-26-415547
Event type: m_and_a
Sentiment:  neutral
Materiality: 0.50
Item codes: 8.01
LLM model:  deepseek-v4.1-flash:cloud@v2

Personalis-Tempus merger clears HSR antitrust hurdle; waiting period expired Oct 2, 2026
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- HSR waiting period for Tempus AI's acquisition of Personalis expired at 11:59 p.m. Eastern time on October 2, 2026; Tempus refiled its notification Sept 2, 2026 after withdrawing Aug 31.
- Two-step structure: Merger Sub I merges into Personalis (Personalis survives), then Personalis merges into Merger Sub II, surviving as a wholly owned Tempus subsidiary; agreement signed July 20, 2026.
- Tempus filed Amendment No. 1 to its Form S-4 registration statement and to the Schedule 13E-3 on October 2, 2026; the initial S-4 and 13E-3 were filed August 31, 2026.
- Closing still requires Personalis stockholder approval of the Merger Agreement plus other customary conditions; the virtual stockholders meeting date has not yet been set.
- Tempering the news: Personalis' only stated timeline is that the meeting will be held on a date 'to be determined and announced.'

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1527753/000119312526415547/0001193125-26-415547-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1527753/000119312526415547/d155320d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-26-415547

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