secwatch.observer — SEC 8-K summary
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Issuer:     Tempest Therapeutics, Inc. (TPST)
CIK:        0001544227
Form:       8-K
Filed at:   2026-08-24T20:43:10+00:00
Accession:  0001193125-26-363695
Event type: leadership
Sentiment:  neutral
Materiality: 0.55
Item codes: 5.02
LLM model:  deepseek-v4-flash:cloud@v2

Tempest CFO Justin Trojanowski resigns Sept 1; Nicholas Rossettos appointed
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- Justin Trojanowski resigns as Principal Financial/Accounting Officer effective Sept 1, 2026.
- Nicholas Rossettos named CFO, Principal Financial & Accounting Officer, Treasurer, Secretary effective Sept 1.
- Rossettos, 60, is a CPA with 30+ years; prior fractional CFO at Charles River CFO and CFO of Egenix.
- He was Interim CFO at Sernova Corp (TSX: SVA) Mar-Oct 2024 and advisor to TransCode (RNAZ) since Apr 2025.
- No family relationships or 404(a) transactions disclosed; standard indemnification agreement entered.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1544227/000119312526363695/0001193125-26-363695-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1544227/000119312526363695/d152818d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-26-363695

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer