NPK International (NPKI) awards 20,838 RSUs to VP Lori Briggs

Rhea-AI Filing Summary

Briggs Lori reported acquisition or exercise transactions in this Form 4 filing.

NPK International Inc. reported that executive Lori Briggs, VP & President, Industrial Solutions, received a grant of 20,838 shares of Common Stock in the form of restricted stock units at no cash purchase price. These units vest in one-third installments on June 1 of each year after the grant and settle in shares. Following this award, Briggs directly holds 263,351 shares of NPK International common stock, reflecting a routine equity compensation grant rather than an open-market transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Briggs Lori

Role VP & President, Ind. Solutions

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	20,838	$0.00	--

Holdings After Transaction: Common Stock — 263,351 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSU grant size: 20,838 shares Grant price: $0.00 per share Post-grant holdings: 263,351 shares +1 more

4 metrics

RSU grant size 20,838 shares Restricted stock unit grant of Common Stock on May 19, 2026

Grant price $0.00 per share Equity award, no cash purchase price

Post-grant holdings 263,351 shares Total direct Common Stock owned after the transaction

Vesting structure One-third annually RSUs vest in one-third increments on June 1 of each subsequent year

Key Terms

restricted stock units, vest, settle in shares, Grant, award, or other acquisition, +1 more

5 terms

restricted stock units financial

"Grant of restricted stock units that vest in one-third increments on June 1"

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.

vest financial

"restricted stock units that vest in one-third increments on June 1"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

settle in shares financial

"and settle in shares"

Grant, award, or other acquisition financial

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

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.

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
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^*

Briggs Lori

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP & President, Ind. Solutions

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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	05/19/2026		A		20,838(1)	A	$0.0	263,351	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. Grant of restricted stock units that vest in one-third increments on June 1 of each subsequent year after grant and settle in shares.

	By: M. Celeste Fruge For: Lori Briggs	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)

FAQ

What insider transaction did NPKI executive Lori Briggs report?

Lori Briggs reported receiving a grant of restricted stock units representing 20,838 shares of NPK International Common Stock. This is a compensation-related equity award, not an open-market purchase, and was reported on a Form 4 insider filing.

How many NPKI shares does Lori Briggs hold after this Form 4 grant?

After the reported grant, Lori Briggs directly holds 263,351 shares of NPK International Common Stock. This total reflects her updated direct ownership position following the award of 20,838 restricted stock units that will settle in shares over time.

Is the NPKI Form 4 transaction an open-market buy or a stock grant?

The NPKI Form 4 shows a stock grant, not an open-market buy. The 20,838 shares were acquired under transaction code A, described as a grant, award, or other acquisition, at a price of $0.00 per share.

What is the vesting schedule for Lori Briggs’ NPKI restricted stock units?

The restricted stock units granted to Lori Briggs vest in one-third increments on June 1 of each subsequent year after the grant. Once vested, they settle in NPK International common shares according to the award terms.

What role does Lori Briggs hold at NPK International (NPKI)?

Lori Briggs serves as VP & President, Industrial Solutions at NPK International Inc. Her Form 4 filing reflects an equity compensation award tied to this executive role rather than discretionary trading in the company’s stock.