Cactus (WHD) EVP Tadlock receives RSU grant and settles tax withholdings

Rhea-AI Filing Summary

Cactus, Inc. EVP Stephen Tadlock reported routine equity compensation activity involving restricted stock units and Class A common stock. On March 10, 2026, he received a grant of 14,970 restricted stock units, which vest in three equal annual installments beginning on the first anniversary of the grant date.

On March 10–11, 2026, previously granted restricted stock units vested and were converted into a total of 16,976 shares of Class A common stock at a conversion price of $0.0000. To cover tax withholding obligations upon these vestings, the company withheld 6,682 shares at prices of $48.5600 and $48.6000 per share, rather than selling shares in the open market.

Following these transactions, Tadlock directly held 82,068 shares of Class A common stock and 131,314 restricted stock units, which each represent a contingent right to receive one share of Class A common stock upon future vesting.

Insider Trade Summary

16,976 shares exercised/converted

Mixed 10 txns

Insider Tadlock Stephen

Role EVP/CEO Spool Tech/Cactus Intl

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	4,971	$0.00	--
Exercise	Class A Common Stock	4,971	$0.00	--
Tax Withholding	Class A Common Stock	1,957	$48.56	$95K
Grant/Award	Restricted Stock Units	14,970	$0.00	--
Exercise	Restricted Stock Units	7,978	$0.00	--
Exercise	Restricted Stock Units	4,027	$0.00	--
Exercise	Class A Common Stock	7,978	$0.00	--
Tax Withholding	Class A Common Stock	3,140	$48.60	$153K
Exercise	Class A Common Stock	4,027	$0.00	--
Tax Withholding	Class A Common Stock	1,585	$48.60	$77K

Holdings After Transaction: Restricted Stock Units — 131,314 shares (Direct); Class A Common Stock — 84,025 shares (Direct)

Footnotes (1)

1. Restricted stock units represent a contingent right to receive Class A common stock. Upon vesting, one share of Class A common stock will be delivered for each vested restricted stock unit. Represents shares withheld by the Company to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units. On March 10, 2026, the reporting person was granted 14,970 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date. On March 10, 2023, the reporting person was granted 23,932 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date. On March 10, 2025, the reporting person was granted 12,080 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date. On March 11, 2024, the reporting person was granted 14,915 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date.

Form 4 Insider Transactions: What Each Field Means →

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
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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^*

Tadlock Stephen

(Last) (First) (Middle)

920 MEMORIAL CITY WAY

SUITE 300

(Street)

HOUSTON TX 77024

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Cactus, Inc. [ WHD ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP/CEO Spool Tech/Cactus Intl

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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
Class A Common Stock	03/10/2026		M		7,978	A	(1)	79,752	D
Class A Common Stock	03/10/2026		F		3,140(2)	D	$48.6	76,612	D
Class A Common Stock	03/10/2026		M		4,027	A	(1)	80,639	D
Class A Common Stock	03/10/2026		F		1,585(2)	D	$48.6	79,054	D
Class A Common Stock	03/11/2026		M		4,971	A	(1)	84,025	D
Class A Common Stock	03/11/2026		F		1,957(2)	D	$48.56	82,068	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	(1)	03/10/2026		A		14,970		(3)	(3)	Class A Common Stock	14,970	$0	148,290	D
Restricted Stock Units	(1)	03/10/2026		M			7,978	(4)	(4)	Class A Common Stock	7,978	$0	140,312	D
Restricted Stock Units	(1)	03/10/2026		M			4,027	(5)	(5)	Class A Common Stock	4,027	$0	136,285	D
Restricted Stock Units	(1)	03/11/2026		M			4,971	(6)	(6)	Class A Common Stock	4,971	$0	131,314	D

Explanation of Responses:

1. Restricted stock units represent a contingent right to receive Class A common stock. Upon vesting, one share of Class A common stock will be delivered for each vested restricted stock unit.

2. Represents shares withheld by the Company to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units.

3. On March 10, 2026, the reporting person was granted 14,970 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date.

4. On March 10, 2023, the reporting person was granted 23,932 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date.

5. On March 10, 2025, the reporting person was granted 12,080 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date.

6. On March 11, 2024, the reporting person was granted 14,915 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date.

Remarks:

	/s/ Stephen Tadlock, by Will Marsh as Attorney-in-Fact	03/12/2026
	** 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.

FAQ

What did Cactus (WHD) EVP Stephen Tadlock report in this Form 4?

He reported routine equity compensation activity, including new restricted stock unit grants, vesting of prior awards into common shares, and shares withheld to cover tax obligations. No open-market purchases or sales of Cactus, Inc. common stock were disclosed in this filing.

How many restricted stock units did Stephen Tadlock receive from Cactus (WHD)?

He received a grant of 14,970 restricted stock units on March 10, 2026. These units vest in three equal annual installments beginning on the first anniversary of the grant date, providing deferred equity-based compensation tied to future service and company performance.

How many Cactus (WHD) shares were issued to Stephen Tadlock from RSU vesting?

Previously granted restricted stock units vested and converted into a total of 16,976 shares of Class A common stock. The conversion occurred at a stated price of $0.0000 per share, reflecting non-cash settlement of equity awards rather than market purchases.

Were any Cactus (WHD) shares sold on the market in this Form 4?

No open-market sales were reported. The filing shows 6,682 shares of Class A common stock withheld by the company at prices of $48.5600 and $48.6000 per share solely to satisfy tax withholding obligations from vesting restricted stock units.

What are Stephen Tadlock’s Cactus (WHD) holdings after these transactions?

After these transactions, he directly held 82,068 shares of Class A common stock and 131,314 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Class A common stock upon future vesting events, subject to award terms.

How do the Cactus (WHD) restricted stock units reported here vest over time?

The 14,970 restricted stock units granted on March 10, 2026 vest in three equal annual installments. Footnotes also reference earlier grants from 2023, 2024, and 2025 with similar three-year vesting structures, indicating a rolling schedule of time-based equity vesting.