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

ProPetro Holding Corp.

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.

item 5.02

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Departed

Alex V. Volkov

Director

PUMP · ProPetro Holding Corp.

Effective: 2026-05-28
Filed: June 1, 2026, 4:16 PM ET

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”).

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Executive change SEC 8-K Item 5.02 confidence 1.0

Alex V. Volkov resigned as Director at ProPetro Holding Corp..

Action: resigned
Role: Director

Exact text from the filing

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”).

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Source: SEC EDGAR

accession 0001680247-26-000091

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