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NWPX (NWPX) CEO exercises 23,904 performance shares, 11,164 withheld for taxes

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

NWPX Infrastructure, Inc. President & CEO Scott J. Montross reported multiple equity compensation transactions on March 31, 2026. He exercised 23,904 Performance Shares that had vested based on company performance, receiving an equivalent number of shares of common stock at an exercise price of $0.00 per share.

To cover tax obligations from these vesting events, 11,164 shares of common stock were withheld by the company at a price of $77.86 per share, which is characterized as a tax-withholding disposition rather than an open-market sale. Following these transactions, Montross directly held 81,129 shares of NWPX common stock.

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Insider MONTROSS SCOTT J
Role President & CEO
Type Security Shares Price Value
Exercise Performance Shares 8,606 $0.00 --
Exercise Performance Shares 7,753 $0.00 --
Exercise Performance Shares 7,545 $0.00 --
Exercise Common Stock 10,069 $0.00 --
Tax Withholding Common Stock 3,962 $77.86 $308K
Exercise Common Stock 10,079 $0.00 --
Tax Withholding Common Stock 3,966 $77.86 $309K
Exercise Common Stock 8,224 $0.00 --
Tax Withholding Common Stock 3,236 $77.86 $252K
holding Restricted Stock -- -- --
Holdings After Transaction: Performance Shares — 55,214 shares (Direct); Common Stock — 73,990 shares (Direct); Restricted Stock — 0 shares (Direct)
Footnotes (1)
  1. Represents shares acquired pursuant to the vesting of Performance Shares. Represents shares withheld by the issuer for payment of taxes incurred upon vesting event consistent with company policy. Performance Shares vest in an amount ranging from 0-200% to the extent such Performance Shares are earned. Performance Shares are earned based on NWPX's total EBITDA margin over the measurement period. Performance Shares vest in installments as follows: 1/3 on April 1, 2024, 1/3 on March 31, 2025 and 1/3 on March 31, 2026. Performance Shares vest in installments as follows: 1/3 March 31, 2025, 1/3 on March 31, 2026 and 1/3 on March 31, 2027. Performance Shares vest in installments as follows: 1/3 on March 31, 2026, 1/3 on March 31, 2027 and 1/3 on March 31, 2028. Each Restricted Stock Unit represents a contingent right to receive one share of NWPX common stock. The Restricted Stock Units vest in installments in January of 2027, 2028 and 2029.
Performance Shares exercised 23,904 shares Performance Shares converted to common stock on March 31, 2026
Shares withheld for taxes 11,164 shares Common shares withheld at $77.86 per share for tax obligations
Post-transaction holdings 81,129 shares NWPX common stock held directly by CEO after March 31, 2026
Tax withholding price $77.86 per share Value used for tax-withholding dispositions of common stock
Exercise price of Performance Shares $0.00 per share Conversion of vested Performance Shares into NWPX common stock
Performance Shares financial
"Represents shares acquired pursuant to the vesting of Performance Shares."
Performance shares are a type of company stock given to executives or employees that only become theirs if the company meets specific goals, like hitting certain profits or growth targets. They motivate leaders to work toward the company’s success, because their additional shares depend on achieving these results.
tax-withholding disposition financial
"Payment of exercise price or tax liability by delivering securities"
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
Restricted Stock Units financial
"Each Restricted Stock Unit represents a contingent right to receive one share"
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.
EBITDA margin financial
"Performance Shares are earned based on NWPX's total EBITDA margin over the measurement period."
EBITDA margin is the share of each dollar of sales that a company keeps as operating cash profit before interest, taxes, and accounting for equipment wear and long-term investments. Think of it like the cash a store has left from every sale after paying day-to-day running costs but before paying rent, loan interest or replacing old machinery. Investors use it to compare core profitability and operational efficiency across companies by removing financing and accounting differences.
SEC Form 4
FORM 4UNITED 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*
MONTROSS SCOTT J

(Last)(First)(Middle)
201 NE PARK PLAZA DRIVE
SUITE 100

(Street)
VANCOUVER WASHINGTON 98684

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
NWPX Infrastructure, Inc. [ NWPX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
President & CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock03/31/2026M10,069A(1)73,990D
Common Stock03/31/2026F3,962(2)D$77.8670,028D
Common Stock03/31/2026M10,079A(1)80,107D
Common Stock03/31/2026F3,966(2)D$77.8676,141D
Common Stock03/31/2026M8,224A(1)84,365D
Common Stock03/31/2026F3,236(2)D$77.8681,129D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Performance Shares(3)03/31/2026M8,606 (4) (4)Common Stock10,069(3)55,214D
Performance Shares(3)03/31/2026M7,753 (5) (5)Common Stock10,079(3)47,461D
Performance Shares(3)03/31/2026M7,545 (6) (6)Common Stock8,224(3)39,916D
Restricted Stock(7) (8) (8)Common Stock(7)13,305D
Explanation of Responses:
1. Represents shares acquired pursuant to the vesting of Performance Shares.
2. Represents shares withheld by the issuer for payment of taxes incurred upon vesting event consistent with company policy.
3. Performance Shares vest in an amount ranging from 0-200% to the extent such Performance Shares are earned. Performance Shares are earned based on NWPX's total EBITDA margin over the measurement period.
4. Performance Shares vest in installments as follows: 1/3 on April 1, 2024, 1/3 on March 31, 2025 and 1/3 on March 31, 2026.
5. Performance Shares vest in installments as follows: 1/3 March 31, 2025, 1/3 on March 31, 2026 and 1/3 on March 31, 2027.
6. Performance Shares vest in installments as follows: 1/3 on March 31, 2026, 1/3 on March 31, 2027 and 1/3 on March 31, 2028.
7. Each Restricted Stock Unit represents a contingent right to receive one share of NWPX common stock.
8. The Restricted Stock Units vest in installments in January of 2027, 2028 and 2029.
/s/ Megan Kendrick04/02/2026
** Signature of Reporting PersonDate
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 did NWPX CEO Scott J. Montross report in this Form 4?

Scott J. Montross reported exercises of Performance Shares and related tax-withholding dispositions. He converted vested Performance Shares into common stock at $0.00 per share and had shares withheld to satisfy taxes, ending with 81,129 NWPX common shares held directly.

How many Performance Shares did the NWPX CEO vest and exercise?

He exercised 23,904 Performance Shares into common stock. Footnotes explain these Performance Shares are earned based on NWPX’s total EBITDA margin over a measurement period and can vest between 0–200% depending on performance and vest on specified installment dates.

Were any of the NWPX CEO’s reported transactions open-market sales?

No open-market sales were reported. Dispositions used transaction code F and were described as shares withheld by the issuer to pay taxes incurred upon vesting, consistent with company policy, rather than discretionary sales into the market.

How many NWPX common shares did the CEO hold after these transactions?

After completing the exercises and tax-withholding entries, Scott J. Montross directly held 81,129 shares of NWPX common stock. This figure reflects his updated equity position following the March 31, 2026 vesting and withholding events reported in the Form 4.

How were the tax obligations handled for the NWPX CEO’s Performance Shares vesting?

Tax obligations were satisfied through share withholding. A total of 11,164 common shares, valued at $77.86 per share, were withheld by NWPX to cover taxes arising from the vesting events, as described in the filing’s tax-withholding footnote.

What determines how many NWPX Performance Shares are earned and vest?

Performance Shares are earned based on NWPX’s total EBITDA margin over a specified measurement period. Depending on performance, between 0–200% of the target Performance Shares may be earned, then vest in scheduled installments on designated future dates noted in the footnotes.