NWPX Infrastructure director sells 1,000 shares

A NWPX Infrastructure, Inc. director sold 1,000 shares under a pre-arranged Rule 10b5-1 trading plan and now directly holds 17,633 shares.

Rhea-AI Filing Summary

NWPX Infrastructure, Inc. (NWPX) director Keith R. Larson reported selling 1,000 shares of common stock on September 8, 2026 in an open-market or private transaction at a weighted average price of $105.8688 per share. The sale was made under a Rule 10b5-1(c) trading plan adopted on May 18, 2026. Following this transaction, he directly holds 17,633 shares of NWPX common stock.

According to a footnote, the sale was executed in multiple trades at prices ranging from $104.91 to $106.81 per share, with the reported price reflecting the weighted average across those trades.

Insider Trade Summary 10b5-1

Net Seller: 1,000 shares

Net Sell 1 txn

Insider LARSON KEITH R

Role Director

Sold 1,000 shs ($106K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	1,000	$105.8688	$106K

Holdings After Transaction: Common Stock — 17,633 shares (Direct)

Footnotes (2)

1. F1. Adoption date of referenced 10b5-1(c) plan is: 05-18-2026
2. F2. This transaction was executed in multiple trades at prices ranging from $104.91 to $106.81 per share. 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.

Key Figures

Shares sold: 1,000 shares Weighted average sale price: $105.8688 per share Post-transaction holdings: 17,633 shares +2 more

5 metrics

Shares sold 1,000 shares Common stock sale reported for September 8, 2026

Weighted average sale price $105.8688 per share Average price for 1,000 shares sold on September 8, 2026

Post-transaction holdings 17,633 shares Directly held NWPX common stock after the sale

Trade price range $104.91–$106.81 per share Range of execution prices across multiple trades on September 8, 2026

Rule 10b5-1(c) plan adoption date May 18, 2026 Trading plan under which the reported sale was executed

Key Terms

Rule 10b5-1(c) plan, weighted average sale price, open market or private transaction

3 terms

Rule 10b5-1(c) plan regulatory

"Adoption date of referenced 10b5-1(c) plan is: 05-18-2026"

weighted average sale price financial

"The price reported reflects the weighted average sale price."

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

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

What insider transaction did NWPX director Keith R. Larson report?

He reported a sale of 1,000 shares of NWPX common stock on September 8, 2026 in an open-market or private transaction, according to the Form 4 filing.

At what price did the NWPX shares sell in the September 8, 2026 transaction?

The filing reports a weighted average sale price of $105.8688 per share, with individual trades executed at prices ranging from $104.91 to $106.81 per share.

How many NWPX shares does Keith R. Larson hold after this reported sale?

After the reported sale, Keith R. Larson directly holds 17,633 shares of NWPX Infrastructure, Inc. common stock, as stated in the Form 4.

Was the September 8, 2026 NWPX share sale under a Rule 10b5-1 trading plan?

Yes. The sale was made pursuant to a Rule 10b5-1(c) trading plan with an adoption date of May 18, 2026, as disclosed in the footnotes.

How many shares did the NWPX insider sell in this Form 4 filing?

The insider sold 1,000 shares of NWPX common stock in this reported transaction, leaving a post-transaction direct holding of 17,633 shares.

What type of transaction was reported in the NWPX Form 4?

The Form 4 describes the transaction as a sale of common stock in an open market or private transaction, coded as a sale and reported as a non-derivative transaction.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 09/10/2026 - 02:36 PM Accepted by SEC EDGAR 09/10/2026 - 02:35 PM 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^*

LARSON KEITH R

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/08/2026		S(1)		1,000(1)	D	$105.8688(2)	17,633	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. Adoption date of referenced 10b5-1(c) plan is: 05-18-2026

2. This transaction was executed in multiple trades at prices ranging from $104.91 to $106.81 per share. 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.

	/s/ Megan Kendrick	09/10/2026
	** 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.
* Form 4: SEC 1474 (03-26)