NPK International director granted 8,558 shares

CUTILLO JOSEPH A reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

CUTILLO JOSEPH A reported acquisition or exercise transactions in this Form 4 filing.

NPK International Inc. director Joseph A. Cutillo reported an equity compensation grant of 8,558 shares of common stock. The shares were awarded at no cash cost and increase his direct holdings to 36,155 shares.

The grant will vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders meeting, meaning the director does not receive full ownership benefits until that vesting condition is met.

Insider Trade Summary

Grant/Award: 8,558 shares

Grant/Award 1 txn

Insider CUTILLO JOSEPH A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	8,558	$0.00	$0.00

Holdings After Transaction: Common Stock — 36,155 shares (Direct)

Footnotes (1)

1. F1. The shares will vest on the earlier of the first anniversary of the date of grant or the day prior to the next annual stockholders meeting.

Key Figures

Shares granted: 8,558 shares Price per share: $0.00 per share Shares after transaction: 36,155 shares +2 more

5 metrics

Shares granted 8,558 shares Equity grant on May 20, 2026

Price per share $0.00 per share Stated grant price

Shares after transaction 36,155 shares Direct holdings following grant

Vesting condition Earlier of 1-year anniversary or day before next annual meeting Grant vesting schedule

Transaction code A Grant, award, or other acquisition

Key Terms

Grant, award, or other acquisition, vesting, annual stockholders meeting, Common Stock

4 terms

Grant, award, or other acquisition financial

"transaction code description: Grant, award, or other acquisition"

vesting financial

"The shares will vest on the earlier of the first anniversary of the date of grant"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

annual stockholders meeting financial

"or the day prior to the next annual stockholders meeting"

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

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

What insider transaction did NPKI director Joseph A. Cutillo report?

Joseph A. Cutillo reported an acquisition of 8,558 shares of NPK International common stock. The shares were granted as equity compensation at no cash cost, increasing his direct holdings to 36,155 shares, subject to the vesting schedule described in the grant terms.

How many NPKI shares does Joseph A. Cutillo hold after this Form 4?

After the reported grant, Joseph A. Cutillo directly holds 36,155 shares of NPK International common stock. This reflects the addition of 8,558 granted shares, which were awarded at a stated price of $0.00 per share and are subject to future vesting conditions.

Is the NPKI insider transaction a market purchase or a compensation grant?

The transaction is a compensation-related grant, not a market purchase. The Form 4 uses transaction code A, described as a grant, award, or other acquisition, with 8,558 shares issued at $0.00 per share under an equity award arrangement with vesting requirements.

What is the vesting schedule for Joseph A. Cutillo’s new NPKI shares?

The granted shares vest on the earlier of the first anniversary of the grant date or the day before NPK International’s next annual stockholders meeting. Until vesting, the award remains subject to forfeiture based on the terms referenced in the Form 4 footnote.

Does the NPKI Form 4 show any insider sales or dispositions?

The Form 4 shows no insider sales or dispositions. It reports one acquisition transaction coded A, representing a grant or award of 8,558 common shares, with zero transactions categorized as sells, gifts, tax withholdings, or derivative exercises in the transaction summary.

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

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Accepted by SEC EDGAR 05/21/2026 - 05:09 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^*

CUTILLO JOSEPH A

(Last) (First) (Middle)

9320 LAKESIDE BOULEVARD

SUITE 100

(Street)

THE WOODLANDS TEXAS 77381

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
NPK International Inc. [ NPKI ]

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
Common Stock	05/20/2026		A		8,558(1)	A	$0.0	36,155	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

Explanation of Responses:

1. The shares will vest on the earlier of the first anniversary of the date of grant or the day prior to the next annual stockholders meeting.

	By: M. Celeste Fruge For: Joeseph A Cutillo	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)