---
schema_version: "secwatch.filing_event.v1"
accession: "0001680247-26-000091"
form_type: "8-K"
ticker: "PUMP"
cik: "0001680247"
company_name: "ProPetro Holding Corp."
filed_at: "2026-06-01T20:16:36+00:00"
generated_at: "2026-06-01T20:33:05.640104+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Director Alex Volkov resigns from ProPetro board after Pioneer (Exxon) sells all shares

## Summary
- Alex V. Volkov resigned from the Board on May 28, 2026; Board reduced from 8 to 7 directors.
- Volkov was designated by Pioneer (Exxon subsidiary) under an Investor Rights Agreement.
- Pioneer sold all its remaining ProPetro shares on May 20, 2026, ending its designation rights.
- Resignation was not due to any disagreement with management or Board.

## SEC filing metadata
- accession: 0001680247-26-000091
- form_type: 8-K
- ticker: PUMP
- cik: 0001680247
- company_name: ProPetro Holding Corp.
- filed_at: 2026-06-01T20:16:36+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1680247/000168024726000091/0001680247-26-000091-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680247/000168024726000091/pump-20260528.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001680247-26-000091
- JSON: https://secwatch.observer/filing/0001680247-26-000091.json
- Plain text: https://secwatch.observer/filing/0001680247-26-000091.txt

## Source-grounded claims
- claim_id: e25b0ae315
  claim: Alex V. Volkov resigned as Director at ProPetro Holding Corp..
  evidence_excerpt: On May 28, 2026, ProPetro Holding Corp. (the “Company”) announced the resignation of Alex V. Volkov from the Company’s Board of Directors (the “Board”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1680247/000168024726000091/0001680247-26-000091-index.htm

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