NPK International CAO reports 54,430 shares

Chief Accounting Officer Warren Matthew James discloses existing NPKI share and restricted stock unit holdings.

Rhea-AI Filing Summary

NPK International Inc. (NPKI) reported the initial beneficial ownership of equity securities by Chief Accounting Officer Warren Matthew James. He reports direct ownership of 54,430 shares of Common Stock, which includes 21,066 time-based restricted stock units that will settle into shares on a one-for-one basis following vesting.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Warren Matthew James

Role Chief Accounting Officer

Type	Security	Shares	Price	Value
holding	Common Stock F1	--	--	--

Holdings After Transaction: Common Stock — 54,430 shares (Direct)

Footnotes (1)

1. F1. Includes shares held outright and 21,066 time-based restricted stock units that settle for shares on a one-for-one basis following vesting.

Key Figures

Common Stock beneficially owned: 54,430 shares Time-based restricted stock units: 21,066 units Ownership type: Direct

3 metrics

Common Stock beneficially owned 54,430 shares Direct holdings reported by Warren Matthew James on Form 3

Time-based restricted stock units 21,066 units RSUs that settle one-for-one into shares following vesting

Ownership type Direct All 54,430 shares reported as directly owned

Key Terms

time-based restricted stock units, beneficial ownership, vesting

3 terms

time-based restricted stock units financial

"Includes shares held outright and 21,066 time-based restricted stock units that settle"

Time-based restricted stock units are a form of employee compensation where individuals are granted company shares that are earned over a set period, often as a reward for staying with the company. These shares typically become fully owned and transferable only after passing specific time milestones, encouraging long-term commitment. For investors, they highlight a company's focus on employee retention and can influence future stock supply and company stability.

beneficial ownership financial

"reported the initial beneficial ownership of equity securities by Chief Accounting"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

vesting financial

"units that settle for shares on a one-for-one basis following vesting"

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.

FAQ

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

What does NPKI’s Form 3 filing report for Warren Matthew James?

It reports Warren Matthew James, Chief Accounting Officer of NPK International Inc. (NPKI), as the beneficial owner of 54,430 shares of Common Stock, including 21,066 time-based restricted stock units that will convert into shares after vesting.

How many NPKI common shares does Warren Matthew James beneficially own?

Warren Matthew James beneficially owns 54,430 shares of NPKI Common Stock on a direct basis. This total includes both shares held outright and certain restricted stock units that will settle in shares after vesting.

How many restricted stock units does the NPKI CAO hold according to the Form 3?

The Chief Accounting Officer holds 21,066 time-based restricted stock units. These units are structured to settle for shares on a one-for-one basis once the applicable vesting conditions are satisfied.

Are the reported NPKI shares held directly or indirectly by Warren Matthew James?

The 54,430 shares reported for Warren Matthew James are held with direct ownership. The total includes shares held outright and time-based restricted stock units that will convert into shares after vesting.

Does the Form 3 for NPKI indicate any recent buy or sell transactions?

No. The Form 3 for NPKI reports holdings only, with 54,430 shares shown as beneficially owned after the reported position, including 21,066 time-based restricted stock units. It does not reflect any specific purchase or sale transaction.

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

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Available on EDGAR 09/08/2026 - 06:50 PM Accepted by SEC EDGAR 09/08/2026 - 06:49 PM Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Warren Matthew James

(Last) (First) (Middle)

9320 LAKESIDE BOULEVARD

SUITE 100

(Street)

THE WOODLANDS TEXAS 77381

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
08/31/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	54,430(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes shares held outright and 21,066 time-based restricted stock units that settle for shares on a one-for-one basis following vesting.

	By: M. Celeste Fruge For: Matthew Warren	09/08/2026
	** 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 5 (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 3: SEC 1473 (03-26)