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

NWPX director sells 74 shares at about $110

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

Rhea-AI Filing Summary

NWPX Infrastructure, Inc. (NWPX) director Keith R. Larson reported selling 74 shares of common stock on September 2, 2026, in a sale classified as an open market or private transaction at a weighted average price of $110.2597 per share under a Rule 10b5-1(c) trading plan. Following this transaction, he held 18,637 shares of NWPX common stock directly. The sale was executed in multiple trades at prices ranging from $110.00 to $111.32 per share.

Positive

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Negative

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Insider LARSON KEITH R
Role Director
Sold 74 shs ($8K)
Type Security Shares Price Value
Sale Common Stock F1, F2 74 $110.2597 $8K
Holdings After Transaction: Common Stock — 18,637 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 $110.00 to $111.32 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.
Shares sold 74 shares Common stock sale reported for September 2, 2026
Weighted average sale price $110.2597 per share Sale of 74 NWPX common shares on September 2, 2026
Price range of executed trades $110.00–$111.32 per share Multiple trades comprising the reported sale transaction
Shares owned after transaction 18,637 shares Direct holdings of NWPX common stock after the September 2, 2026 sale
Rule 10b5-1(c) plan adoption date May 18, 2026 Plan under which the reported sale transaction was executed
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 market
"Sale in open market or private transaction"

FAQ

What insider transaction did NWPX director Keith R. Larson report?
He reported a sale of 74 shares of NWPX common stock on September 2, 2026, classified as an open market or private transaction, at a weighted average price of $110.2597 per share, leaving him with 18,637 shares held directly.

Was the NWPX insider sale made under a Rule 10b5-1 plan?
Yes. The filing states the transaction was under a Rule 10b5-1(c) trading plan with an adoption date of May 18, 2026, indicating the trades were pre-arranged according to that plan.

How many NWPX shares does the reporting person hold after this transaction?
After the reported sale, Keith R. Larson held 18,637 shares of NWPX Infrastructure, Inc. common stock directly, as disclosed in the Form 4 data.

At what prices were the NWPX shares sold in this insider transaction?
The sale of 74 NWPX shares was executed in multiple trades at prices ranging from $110.00 to $111.32 per share. The Form 4 reports a weighted average sale price of $110.2597 per share for the transaction.

What role does the reporting person hold at NWPX Infrastructure, Inc.?
The reporting person, Keith R. Larson, is identified as a director of NWPX Infrastructure, Inc. in the Form 4 insider transaction report.

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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).
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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/02/2026		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 Stock09/02/2026S(1)74(1)D$110.2597(2)18,637D
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
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 $110.00 to $111.32 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 Kendrick09/03/2026
** 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)

Source: View Original Filing on SEC EDGAR