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ProPetro (PUMP) director Ricciardello gains 28,181 shares as RSUs vest into stock

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

ProPetro Holding Corp. director Mary P. Ricciardello received 28,181 shares of Common Stock on May 18, 2026 through the vesting and settlement of previously granted restricted stock units. After this RSU conversion, she directly owns 70,865 shares of ProPetro common stock as reported in the filing.

Positive

  • None.

Negative

  • None.
Insider RICCIARDELLO MARY P
Role null
Type Security Shares Price Value
Exercise Restricted Stock Units 28,181 $0.00 --
Exercise Common Stock 28,181 $0.00 --
Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 70,865 shares (Direct, null)
Footnotes (1)
  1. Reflects shares of common stock of the Issuer ("Common Stock") delivered upon vesting and settlement of previously awarded restricted stock units ("RSUs"). Each RSU represents a contingent right to receive either one share of Common Stock or an amount of cash equal to the fair market value of one share of Common Stock. On May 21 2025, the reporting person was granted 28,181 RSUs, vesting in full upon the earlier to occur of the day immediately preceding the Issuer's annual meeting of stockholders in 2026 and May 21, 2026.
RSUs vested 28,181 shares Shares delivered upon RSU vesting and settlement on May 18, 2026
Shares held after transaction 70,865 shares Director’s direct ProPetro common stock holdings following RSU conversion
RSU grant size 28,181 RSUs Granted on May 21, 2025, vesting in full upon specified 2026 events
RSU exercise price $0.00 per unit Stated transaction price per share for RSU conversion
Restricted Stock Units financial
"Reflects shares of common stock delivered upon vesting and settlement of previously awarded restricted stock units ("RSUs")."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
RSUs financial
"Each RSU represents a contingent right to receive either one share of Common Stock or cash."
RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.
contingent right financial
"Each RSU represents a contingent right to receive either one share of Common Stock or an amount of cash."
vesting and settlement financial
"Shares of Common Stock delivered upon vesting and settlement of previously awarded RSUs."
derivative exercise/conversion financial
"Transaction action is classified as derivative exercise/conversion for the RSUs."
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
RICCIARDELLO MARY P
(Last)(First)(Middle)
ONE MARIENFELD PLACE
110 N. MARIENFELD STREET, SUITE 300
(Street)
MIDLAND TEXAS 79701
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
ProPetro Holding Corp. [ PUMP ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/18/2026M28,181(1)A(2)70,865D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units(2)05/18/2026M28,181 (3) (3)Common Stock28,181$00D
Explanation of Responses:
1. Reflects shares of common stock of the Issuer ("Common Stock") delivered upon vesting and settlement of previously awarded restricted stock units ("RSUs").
2. Each RSU represents a contingent right to receive either one share of Common Stock or an amount of cash equal to the fair market value of one share of Common Stock.
3. On May 21 2025, the reporting person was granted 28,181 RSUs, vesting in full upon the earlier to occur of the day immediately preceding the Issuer's annual meeting of stockholders in 2026 and May 21, 2026.
Remarks:
/s/ John J. Mitchell, as attorney-in-fact for Mary P. Ricciardello05/19/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did ProPetro (PUMP) director Mary P. Ricciardello report?

Mary P. Ricciardello reported acquiring 28,181 ProPetro common shares through RSU vesting and settlement. These shares came from a previously awarded restricted stock unit grant that converted into common stock, rather than an open-market purchase or sale transaction.

How many ProPetro (PUMP) shares does Mary P. Ricciardello hold after this Form 4?

After the RSU vesting, Mary P. Ricciardello directly holds 70,865 ProPetro common shares. This figure reflects her position immediately following the settlement of 28,181 restricted stock units into common stock as disclosed in the Form 4 filing.

What was the size of the RSU grant reported by ProPetro (PUMP) for Mary P. Ricciardello?

Mary P. Ricciardello was granted 28,181 restricted stock units on May 21, 2025. Each RSU represented a contingent right to receive either one ProPetro common share or cash equal to the fair market value of one share upon vesting and settlement.

When did the ProPetro (PUMP) RSUs for Mary P. Ricciardello vest?

The 28,181 RSUs for Mary P. Ricciardello vested and settled into common stock on May 18, 2026. The grant vested in full upon the earlier of the day before ProPetro’s 2026 annual stockholder meeting or May 21, 2026, as described in the filing.

Was Mary P. Ricciardello’s ProPetro (PUMP) Form 4 a stock purchase or sale?

The Form 4 did not report an open-market purchase or sale. Instead, it showed a derivative exercise where 28,181 restricted stock units converted into common shares at a stated price of $0.00 per unit, reflecting equity compensation vesting.

How were the ProPetro (PUMP) RSUs structured for Mary P. Ricciardello?

Each RSU granted to Mary P. Ricciardello represented a right to receive either one ProPetro common share or a cash amount equal to that share’s fair market value. The units vested in full based on the time-based condition tied to the 2026 stockholder meeting.