ProPetro director gets 28,181 shares from RSU vesting

ProPetro Holding Corp. director Michele Vion exercised previously awarded equity compensation.

Rhea-AI Filing Summary

ProPetro Holding Corp. director Michele Vion exercised previously awarded equity compensation. On May 18, 2026, 28,181 restricted stock units vested and were settled into the same number of shares of common stock at no cash exercise price. These RSUs were granted on May 21, 2025 and vested in full ahead of the 2026 annual meeting timeline described in the award terms. Following the settlement, Vion directly holds 73,210 shares of ProPetro common stock.

Insider Trade Summary

28,181 shares exercised/converted

Exercise 2 txns

Insider Vion Michele

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	28,181	$0.00	$0.00
Exercise	Common Stock	28,181	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct); Common Stock — 73,210 shares (Direct)

Footnotes (3)

1. F1. Reflects shares of common stock of the Issuer ("Common Stock") delivered upon vesting and settlement of previously awarded restricted stock units ("RSUs").
2. F2. 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. F3. 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.

Key Figures

RSUs vested and settled: 28,181 units/shares Shares held after transaction: 73,210 shares RSU grant size: 28,181 RSUs +1 more

4 metrics

RSUs vested and settled 28,181 units/shares Restricted stock units converting into common stock on May 18, 2026

Shares held after transaction 73,210 shares Direct ProPetro common stock holdings by Michele Vion after Form 4

RSU grant size 28,181 RSUs Equity award granted on May 21, 2025

Exercise price per RSU $0.00 per unit RSUs settled into common stock at no stated cash cost

Key Terms

Restricted Stock Units, derivative security, contingent right, annual meeting of stockholders

4 terms

Restricted Stock Units financial

"Reflects shares of common stock of the Issuer 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.

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

contingent right financial

"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."

annual meeting of stockholders financial

"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."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did ProPetro (PUMP) director Michele Vion report?

Michele Vion reported the vesting and settlement of 28,181 restricted stock units into 28,181 shares of ProPetro common stock. This was a compensation-related equity award converting into stock, not an open-market purchase or sale, and involved no stated cash exercise price.

How many ProPetro (PUMP) shares does Michele Vion hold after this Form 4?

After the May 18, 2026 transaction, Michele Vion directly holds 73,210 shares of ProPetro common stock. This reflects the addition of 28,181 shares received upon vesting of previously granted restricted stock units that settled in stock instead of cash.

Were any ProPetro (PUMP) shares sold in Michele Vion’s latest Form 4 filing?

No shares were reported as sold. The filing shows 28,181 restricted stock units vesting and settling into 28,181 shares of common stock, with no sale transaction code or sale price disclosed, indicating a non-market, compensation-driven equity conversion only.

When were the restricted stock units granted to ProPetro (PUMP) director Michele Vion?

The 28,181 restricted stock units were granted on May 21, 2025. According to the footnotes, they were scheduled to vest in full upon the earlier of the day immediately preceding ProPetro’s 2026 annual stockholders meeting or May 21, 2026.

What does the M transaction code mean in the ProPetro (PUMP) Form 4 for Michele Vion?

The M transaction code indicates an exercise or conversion of a derivative security. Here, it reflects the conversion of 28,181 restricted stock units into 28,181 shares of ProPetro common stock as part of equity compensation vesting, rather than an open-market trade.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/19/2026 - 05:58 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

Vion Michele

(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)

X	Director		10% 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)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/18/2026		M		28,181(1)	A	(2)	73,210	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(2)	05/18/2026		M			28,181	(3)	(3)	Common Stock	28,181	$0	0	D

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 Michele Vion	05/19/2026
	** Signature of Reporting Person	Date
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)