RICCIARDELLO MARY P 4

What Happened

• Mary P. Ricciardello, a director of ProPetro Holding Corp. (PUMP), had 28,181 restricted stock units (RSUs vest and settle) converted into 28,181 shares of common stock on May 18, 2026. The Form 4 reports an acquisition of 28,181 shares (derivative conversion, code M) and a simultaneous disposition of the derivative award instrument for $0.00 (this reflects cancellation/settlement of the RSUs, not a cash sale of shares).
• No cash proceeds or open-market sale of the underlying shares are reported. The filing does not disclose a per-share cash price for the acquisition (listed as N/A).

Key Details

• Transaction date: 2026-05-18; Form 4 filed 2026-05-19 (timely filing).
• Reported entries: Acquisition of 28,181 shares via derivative conversion (M); disposition of 28,181 derivative units at $0.00 (settlement of RSUs).
• Shares owned after the transaction: not specified in the provided filing.
• Relevant footnotes: F1–F3 state these were previously granted RSUs that vested and settled into common stock. Each RSU represents a right to one share (or cash equal to share FMV). The RSUs were granted May 21, 2025 and vested in full upon the earlier of the day before the issuer’s 2026 annual meeting or May 21, 2026.
• Filing implications: This is a routine RSU vesting/settlement event, not a market purchase or sale; it does not by itself indicate a buy or sell signal.

Context

• For retail investors: this transaction reflects equity compensation settlement (RSUs converting to shares). The disposal line at $0.00 is standard accounting/reporting for the cancellation of the derivative award instrument upon settlement and does not mean shares were sold.
• No 10b5-1 plan, tax-withholding sale, or immediate cashless sale is reported in the provided details.