Notice of Proposed Sale · 144

NWPX Infrastructure, Inc.

NWPXNASDAQEQUITYCurrent

Notice of Proposed Sale

Filed Sep 28, 2026Accepted Sep 28, 2026, 4:15 PM EDTFiling CIK 1401658Accession 0001959173-26-007132

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Structured filing — 144

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: NWPX Infrastructure, Inc.
Issuer CIK: 0001001385
SEC file number: 000-27140
Phone: 3603976250
Person for whose account securities are to be sold: LARSON KEITH R
Relationships to issuer: Director
Street: 201 NE PARK PLAZA DRIVE
Street (continued): SUITE 100
City: VANCOUVER
State / country code: WA
Postal code: 98684

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Common	1,000	102,195.31	9,637,202	09/28/2026	NASDAQ	Fidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name: Fidelity Brokerage Services LLC
Street: 900 Salem Street
City: Smithfield
State / country code: RI
Postal code: 02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 2 reported rows
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Common	06/10/2021	Director Shares	Issuer	377	N	06/10/2021	Compensation
Common	06/18/2024	Director Shares	Issuer	623	N	06/18/2024	Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 8 reported rows
Seller	Security	Sale date	Amount sold	Gross proceeds
The Larson Joint Trust	Common	08/17/2026	1,250	144,827.88
The Larson Joint Trust	Common	08/24/2026	1,250	137,894.49
The Larson Joint Trust	Common	08/31/2026	1,172	128,966.65
The Larson Joint Trust	Common	09/02/2026	74	8,159.22
The Larson Joint Trust	Common	09/03/2026	4	443.14
The Larson Joint Trust	Common	09/08/2026	1,000	105,868.83
The Larson Joint Trust	Common	09/14/2026	1,000	101,119.41
The Larson Joint Trust	Common	09/21/2026	1,000	102,309.98

Seller — prior-sale row 1, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Seller — prior-sale row 2, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Seller — prior-sale row 3, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Seller — prior-sale row 4, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Seller — prior-sale row 5, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Seller — prior-sale row 6, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Seller — prior-sale row 7, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Seller — prior-sale row 8, entry 1

Name: The Larson Joint Trust
Street: 201 NE Park Plaza Drive
Street (continued): Suite 100
City: Vancouver
State / country code: WA
Postal code: 98684

Prior-sale reporting

Nothing to report for the preceding three months: N

Remarks

Today's sale and all past sales within the previous 90 days were executed within the The Larson Joint Trust account, of which Keith R. Larson is a Trustee.

Notice signature

Notice date: 09/28/2026
Signed: /s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Keith R. Larson
Plan adoption dates: 05/18/2026

Company context

Current securities

NWPXNASDAQ · EQUITY · Current

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