NWPX CEO sells 2,500 shares under 10b5-1 plan

Rhea-AI Filing Summary

NWPX Infrastructure, Inc. President & CEO Scott J. Montross reported an open-market sale of 2,500 shares of common stock on March 16, 2026 at a weighted average price of $71.44 per share under a pre-arranged Rule 10b5-1(c) trading plan adopted on December 3, 2025. Following this transaction, he directly owns 68,477 shares of common stock.

In addition, Montross holds 13,305 Restricted Stock Units, each convertible into one NWPX common share and vesting in installments in January 2027, 2028 and 2029. He also has 63,820 Performance Shares tied to NWPX’s total EBITDA margin, which can vest from 0–200% in installments in March 2026, 2027, 2028 and 2029.

Insider Trade Summary 10b5-1

Net Seller: 2,500 shares

Net Sell 3 txns

Insider MONTROSS SCOTT J

Role President & CEO

Sold 2,500 shs ($179K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,500	$71.44	$179K
holding	Restricted Stock Units	--	--	--
holding	Performance Shares	--	--	--

Holdings After Transaction: Common Stock — 68,477 shares (Direct); Restricted Stock Units — 13,305 contracts (Direct); Performance Shares — 63,820 contracts (Direct)

Footnotes (6)

1. F1. Adoption date of referenced 10b5-1(c) plan is: 12/03/2025
2. F2. This transaction was executed in multiple trades. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
3. F3. Each Restricted Stock Unit represents a contingent right to receive one share of NWPX common stock.
4. F4. The Restricted Stock Units vest in installments in January of 2027, 2028 and 2029.
5. F5. 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.
6. F6. The Performance Shares vest in installments in March of 2026, 2027, 2028 and 2029.

FAQ

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

What insider transaction did NWPX CEO Scott J. Montross report in this Form 4?

Scott J. Montross reported selling 2,500 NWPX common shares. The President & CEO executed an open-market sale on March 16, 2026, at a weighted average price of $71.44 per share, under a pre-arranged Rule 10b5-1(c) trading plan adopted on December 3, 2025.

How many NWPX shares did the CEO sell and at what price?

The CEO sold 2,500 shares of NWPX common stock at $71.44. The filing shows an open-market sale of 2,500 shares on March 16, 2026, with the reported figure reflecting the weighted average sale price across multiple trades that day.

How many NWPX shares does CEO Scott J. Montross hold after the sale?

After the sale, Montross directly holds 68,477 NWPX common shares. This figure represents his continuing direct ownership following the March 16, 2026 open-market transaction, separate from additional interests represented by restricted stock units and performance shares.

What restricted stock units (RSUs) does the NWPX CEO hold?

Montross holds 13,305 NWPX Restricted Stock Units. Each RSU represents a contingent right to receive one NWPX common share and vests in installments during January 2027, January 2028 and January 2029, providing additional equity-based compensation over several future years.

How are NWPX performance shares structured for the CEO and when do they vest?

The CEO holds 63,820 NWPX Performance Shares tied to EBITDA margin. These can vest from 0–200% depending on NWPX’s total EBITDA margin over the measurement period and are scheduled to vest in installments in March 2026, March 2027, March 2028 and March 2029.

Was the NWPX CEO’s stock sale made under a Rule 10b5-1 trading plan?

Yes, the sale was executed under a Rule 10b5-1(c) plan. A footnote states that the referenced trading plan was adopted on December 3, 2025, indicating the March 16, 2026 sale followed a pre-arranged, pre-scheduled trading framework.

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

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Accepted by SEC EDGAR 03/17/2026 - 03:57 PM EDT Learn about SEC filing dates

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^*

MONTROSS SCOTT J

(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)
	President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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	03/16/2026		S(1)		2,500(1)	D	$71.44(2)	68,477	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
Restricted Stock Units	(3)							(4)	(4)	Common Stock	13,305(3)		13,305	D
Performance Shares	(5)							(6)	(6)	Common Stock	63,820(5)		63,820	D

Explanation of Responses:

1. Adoption date of referenced 10b5-1(c) plan is: 12/03/2025

2. This transaction was executed in multiple trades. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

4. The Restricted Stock Units vest in installments in January of 2027, 2028 and 2029.

5. 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.

6. The Performance Shares vest in installments in March of 2026, 2027, 2028 and 2029.

	/s/ Megan Kendrick	03/17/2026
	** 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.