ProPetro director granted 9,101 RSUs

RICCIARDELLO MARY P reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

RICCIARDELLO MARY P reported acquisition or exercise transactions in this Form 4 filing.

ProPetro Holding Corp. director Mary P. Ricciardello received a grant of 9,101 Restricted Stock Units as compensation. Each RSU represents a right to receive either one share of common stock or cash equal to its fair market value. The RSUs vest in full on the earlier of the day immediately preceding ProPetro’s 2027 annual stockholder meeting or May 20, 2027. After this grant, Ricciardello holds 9,101 RSUs directly.

Insider Trade Summary

Grant/Award: 9,101 shares

Grant/Award 1 txn

Insider RICCIARDELLO MARY P

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	9,101	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 9,101 contracts (Direct)

Footnotes (1)

1. F1. Each Restricted Stock Unit ("RSU") represents a contingent right to receive either one share of the Issuer's common stock ("Common Stock") or an amount of cash equal to the fair market value of one share of Common Stock. The RSUs will vest in full upon the earlier to occur of the day immediately preceding the Issuer's annual meeting of stockholders in 2027 and May 20, 2027.

Key Figures

RSUs granted: 9,101 units Grant price per RSU: $0.00 per unit Underlying common shares: 9,101 shares +2 more

5 metrics

RSUs granted 9,101 units Grant to director on May 20, 2026

Grant price per RSU $0.00 per unit Equity compensation, no cash paid by director

Underlying common shares 9,101 shares Each RSU linked to one common share

Vesting deadline May 20, 2027 Or earlier day before 2027 annual meeting

RSUs held after grant 9,101 units Director’s RSU position following the transaction

Key Terms

Restricted Stock Units, contingent right, fair market value, vest in full, +1 more

5 terms

Restricted Stock Units financial

"Each Restricted Stock Unit ("RSU") represents a contingent right to receive either one share..."

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.

contingent right financial

"represents a contingent right to receive either one share of the Issuer's common stock..."

fair market value financial

"or an amount of cash equal to the fair market value of one share of Common Stock."

The price a willing buyer and a willing seller would agree on for an asset or security when neither is under pressure and both have access to the same information. Think of it as the market’s neutral estimate of what something is worth, like the price two neighbors would settle on for a car after comparing similar listings. Investors care because fair market value guides buying and selling decisions, tax reporting, portfolio valuation, and how accurately company assets are reflected in financial statements.

vest in full financial

"The RSUs will vest in full upon the earlier to occur of the day immediately preceding..."

annual meeting of stockholders financial

"the day immediately preceding the Issuer's annual meeting of stockholders in 2027..."

FAQ

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

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

ProPetro reported that director Mary P. Ricciardello received 9,101 Restricted Stock Units as a grant. These RSUs are a form of equity-based compensation, giving her potential future common stock or equivalent cash value, subject to vesting conditions through 2027.

How many Restricted Stock Units were granted to the ProPetro (PUMP) director?

Mary P. Ricciardello was granted 9,101 Restricted Stock Units. This award increases her equity-linked position in ProPetro, aligning her compensation with shareholder outcomes through future delivery of common stock or equivalent cash value once the RSUs vest.

When do the newly granted ProPetro (PUMP) RSUs vest for the director?

The 9,101 Restricted Stock Units vest in full on the earlier of the day immediately preceding ProPetro’s 2027 annual stockholder meeting or May 20, 2027. Vesting must occur before she receives shares or cash tied to the units’ value.

What does each ProPetro (PUMP) Restricted Stock Unit represent in this Form 4?

Each Restricted Stock Unit represents a contingent right to receive either one share of ProPetro common stock or cash equal to one share’s fair market value. Delivery occurs only after vesting, making the award a deferred form of equity-based compensation.

Is the ProPetro (PUMP) director’s RSU holding after this grant disclosed?

Yes. Following this grant, Mary P. Ricciardello is reported as directly holding 9,101 Restricted Stock Units. This figure reflects her RSU position after the transaction and will convert into stock or cash if the units vest under the stated schedule.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 05/21/2026 - 04:05 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^*

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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

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

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	(1)	05/20/2026		A		9,101		(1)	(1)	Common Stock	9,101	$0	9,101	D

Explanation of Responses:

1. Each Restricted Stock Unit ("RSU") represents a contingent right to receive either one share of the Issuer's common stock ("Common Stock") or an amount of cash equal to the fair market value of one share of Common Stock. The RSUs will vest in full upon the earlier to occur of the day immediately preceding the Issuer's annual meeting of stockholders in 2027 and May 20, 2027.

Remarks:

	/s/ John J. Mitchell, as attorney-in-fact for Mary P. Ricciardello	05/21/2026
	** 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)