EXXON MOBIL CORP 4

What Happened
Exxon Mobil Corporation, reported as a 10% owner of ProPetro Holding Corp. (PUMP) through a chain of wholly owned subsidiaries, disposed of 16,600,000 ProPetro shares on May 20, 2026. The shares were sold (code S) at $16.66 per share for total proceeds of $276,556,000. This was a sale (a disposition), not a purchase.

Key Details

• Transaction date and price: 2026-05-20 — 16,600,000 shares at $16.66 each.
• Total proceeds: $276,556,000.
• Reporting entity: Exxon Mobil Corporation is listed as a 10% owner; the reported securities are owned directly by Pioneer Natural Resources Pumping Services LLC, a wholly owned subsidiary through a chain to Exxon Mobil (see footnote).
• Shares owned after transaction: not specified in the summary filing.
• Filing date: Form 4 filed 2026-05-22 for the May 20 transaction (appears timely).
• Transaction code: S = Sale. No 10b5‑1 plan, tax withholding, or other special codes noted in the provided details.

Context
This filing reflects an institutional sale by a large shareholder (Exxon, via subsidiaries), not an individual executive. Such large disposals can result from portfolio rebalancing, corporate structuring, or other institutional reasons; the filing itself does not state a motive. For retail investors, purchases often carry stronger signals than routine institutional sales, which can be programmatic.