[Form 4] NWPX Infrastructure, Inc. Insider Trading Activity

Rhea-AI Filing Summary

NWPX Infrastructure Executive Vice President Brittain Miles reported equity award activity on January 15, 2026. Restricted stock units converted into common stock held indirectly through a trust in several transactions, reflecting scheduled vesting of prior equity grants. In related moves, the issuer withheld blocks of common shares at a price of 69.27 per share to cover taxes due upon these vesting events, consistent with company policy.

Miles continues to hold restricted stock units directly and common shares indirectly via the trust after these transactions. He also holds 16,761 performance shares directly, which can vest between 0% and 200% of the target amount based on NWPX’s total EBITDA margin over a measurement period, with vesting installments scheduled in March 2026, 2027 and 2028.

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

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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^*

Brittain Miles

(Last) (First) (Middle)

201 NE PARK PLAZA DRIVE

SUITE 100

(Street)

VANCOUVER WA 98684

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NWPX Infrastructure, Inc. [ NWPX ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Vice President

3. Date of Earliest Transaction (Month/Day/Year)
01/15/2026

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	01/15/2026		M		1,070	A	(1)	26,795	I	Trust(2)
Common Stock	01/15/2026		F		486	D	$69.27(3)	26,309	I	Trust(2)
Common Stock	01/15/2026		M		961	A	(1)	27,270	I	Trust(2)
Common Stock	01/15/2026		F		436	D	$69.27(3)	26,834	I	Trust(2)
Common Stock	01/15/2026		M		865	A	(1)	27,699	I	Trust(2)
Common Stock	01/15/2026		F		393	D	$69.27(3)	27,306	I	Trust(2)

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
Restricted Stock	(4)	01/15/2026		M			1,070	(5)	(5)	Common Stock	1,070	(4)	4,517	D
Restricted Stock	(4)	01/15/2026		M			961	(6)	(6)	Common Stock	961	(4)	3,556	D
Restricted Stock	(4)	01/15/2026		M			865	(7)	(7)	Common Stock	865	(4)	2,691	D
Performance Shares	(8)							(9)	(9)	Common Stock	16,761(8)		16,761	D

Explanation of Responses:

1. Represents shares acquired pursuant to vesting of Restricted Stock Units.

2. Reporting Person is a beneficiary of the trust.

3. Represents shares withheld by the issuer for payment of taxes incurred upon vesting event consistent with company policy.

4. Each Restricted Stock Unit represents a contingent right to receive one share of NWPX common stock.

5. The Restricted Stock Units vest in installments as follows: 1/3 on January 15, 2024, 1/3 on January 15, 2025 and 1/3 on January 15, 2026.

6. The Restricted Stock Units vest in installments as follows: 1/3 on January 15, 2025, 1/3 on January 15, 2026 and 1/3 on January 15, 2027.

7. The Restricted Stock Units vest in installments as follows: 1/3 on January 15, 2026, 1/3 on January 15, 2027 and 1/3 on January 14, 2028.

8. 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.

9. The Performance Shares vest in installments in March of 2026, 2027 and 2028.

	/s/ Miles Brittain	01/20/2026
	** 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.

FAQ

What did NWPX (NWPX) Executive Vice President Brittain Miles report in this Form 4?

Brittain Miles reported the vesting and conversion of restricted stock units into NWPX common stock on January 15, 2026, with resulting shares held indirectly through a trust and some shares withheld by the issuer to cover taxes.

How many performance shares does Brittain Miles hold in NWPX after these transactions?

Following the reported transactions, Brittain Miles holds 16,761 performance shares of NWPX common stock directly.

How are Brittain Miles’ NWPX shares held after the Form 4 transactions?

The common stock received from restricted stock unit vesting is reported as held indirectly through a trust, while the underlying restricted stock and performance shares are reported as held directly by Miles.

Why were some NWPX shares withheld in these Form 4 transactions?

Certain common shares were withheld by NWPX at a price of 69.27 per share to pay taxes incurred upon the vesting of restricted stock units, consistent with company policy.

How do the NWPX restricted stock units reported by Brittain Miles vest over time?

The restricted stock units vest in three annual installments on specified dates in 2024, 2025, 2026, 2027 and 2028, depending on the specific grant, as detailed in the footnotes.

What determines how many NWPX performance shares ultimately vest for Brittain Miles?

The number of performance shares that vest ranges from 0% to 200% of the target based on NWPX’s total EBITDA margin over a defined measurement period, with vesting scheduled in March of 2026, 2027 and 2028.