---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-197236"
form_type: "8-K"
ticker: "HESM"
cik: "0001789832"
company_name: "Hess Midstream LP"
filed_at: "2025-09-05T23:59:59+00:00"
generated_at: "2026-05-17T08:00:12.462269+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Hess Midstream appoints Michael S. Bast as President and COO, succeeding John A. Gatling

## Summary
- President and COO John A. Gatling resigns effective Sept 26, 2025; succeeded by Michael S. Bast on same date.
- Bast, 49, previously served as Director of Upstream Operations at Hess since Nov 2022, overseeing Bakken production.
- Bast joined Hess in 2007; earlier held roles at Chevron (1998-2006). Will become CUSA employee Oct 1, 2025.
- Bast receives no additional compensation from Hess Midstream for his officer role; entitled to indemnification.

## SEC filing metadata
- accession: 0001193125-25-197236
- form_type: 8-K
- ticker: HESM
- cik: 0001789832
- company_name: Hess Midstream LP
- filed_at: 2025-09-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1789832/000119312525197236/0001193125-25-197236-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1789832/000119312525197236/d127667d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-197236
- JSON: https://secwatch.observer/filing/0001193125-25-197236.json
- Plain text: https://secwatch.observer/filing/0001193125-25-197236.txt

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