Lori Briggs (NPK International) executes 8,005-share sale under 10b5-1 plan

Rhea-AI Filing Summary

Lori Briggs, an officer of NPK International Inc. (ticker: NPKI), reported the automatic sale of 8,005 shares of common stock on 08/11/2025 under a pre-established Rule 10b5-1 trading plan adopted March 11, 2025. The disclosure lists a weighted average sale price of $9.5125 with individual trade prices ranging from $9.31 to $9.66. After these transactions the reporting person beneficially owns 252,621 shares in a direct capacity.

The Form 4 filing confirms the sale was executed pursuant to the trading plan and that the reporting person is an officer (VP & President, Industrial Solutions). The filer offers to provide details on the number of shares sold at each separate price upon request.

Positive

• Sale executed under a Rule 10b5-1 trading plan, indicating the transactions were pre-arranged and reduce concerns about opportunistic timing
• Clear disclosure of weighted average price and price range ($9.5125; $9.31–$9.66) and remaining direct ownership of 252,621 shares

Negative

• None.

Insights

Financial Analyst

TL;DR: Routine insider sale under a 10b5-1 plan; transaction disclosed with prices and remaining ownership.

The sale of 8,005 shares was executed under a pre-set Rule 10b5-1 plan, which reduces signaling risk compared with an ad-hoc sale. The Form 4 reports a weighted average price of $9.5125 and a remaining direct holding of 252,621 shares. This disclosure is factual and routine; it does not provide performance metrics or change in corporate guidance, so the event is informational rather than material to the company’s operating outlook.

Corporate Governance Expert

TL;DR: Proper use of a documented 10b5-1 plan and timely reporting reflect adherence to disclosure expectations.

The filing documents an automatic sale pursuant to a Rule 10b5-1 plan adopted on March 11, 2025, and provides a weighted average price plus the range of execution prices. The reporting person is identified as an officer with direct ownership disclosed. These elements support transparency and compliance with Section 16 reporting obligations; the filing contains no indication of irregularity or omission based on the disclosed facts.

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).

X

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 TX 77381

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2025

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
Common Stock	08/11/2025		S		8,005(1)	D	$9.5125(2)	252,621	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 reported sale of 8,005 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2025.

2. The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $9.31 to $9.66, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.

	By: M. Celeste Fruge For: Lori Briggs	08/12/2025
	** 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 Lori Briggs report in the Form 4 for NPK International (NPKI)?

The Form 4 reports an automatic sale of 8,005 shares on 08/11/2025 executed under a Rule 10b5-1 plan; the weighted average sale price was $9.5125.

Was the sale by Lori Briggs part of a 10b5-1 plan?

Yes. The sale occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on March 11, 2025, as stated in the filing.

How many shares does Lori Briggs own after the reported transaction?

The filing shows the reporting person beneficially owns 252,621 shares following the reported transactions, held in a direct capacity.

What price range were the shares sold at according to the Form 4?

The Form 4 states the shares were sold in multiple open-market transactions at prices ranging from $9.31 to $9.66, with a weighted average of $9.5125.

What is Lori Briggs' role at NPK International as listed on the form?

The form identifies Lori Briggs as an officer, specifically VP & President, Industrial Solutions.