RESULTS OF OPERATIONS AND FINANCIAL CONDITION On July 29, 2026, NWPX Infrastructure, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2026 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued July 29, 2026 is furnished her…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On April 29, 2026, NWPX Infrastructure, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2026 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued April 29, 2026 is furnished…

The filing describes the grant of performance share units and restricted stock units to named executive officers, which is a routine compensation matter.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On February 25, 2026, NWPX Infrastructure, Inc. (the “Company”) issued a press release announcing its financial results for the quarter and year ended December 31, 2025 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued February 25,…

Executive Vice President — Miles Brittain: Miles Brittain is retiring and Mike Wray has been named Executive Vice President.

OTHER EVENTS On December 11, 2025, the Board of Directors of the Company authorized a new share repurchase program of up to $10 million of its outstanding common stock. The program does not commit to any particular timing or quantity of purchases, and the program may be suspended or discontinued at any time. Under the program, shares may be purchased in open market, including through plans adopted pursuant to Rule 10b5‑1 of the Securities Exchange Act of 1934, as amended, or in privately nego…

The filing details the parameters of the Company’s performance-based cash incentive program for the 2026 fiscal year.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On October 29, 2025, NWPX Infrastructure, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2025 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued October 29, 2025 is fu…

CREATION OF A DIRECT FINANCIAL OBLIGATION OR AN OBLIGATION UNDER AN OFF-BALANCE SHEEET ARRANGEMENT OF A REGISTRANT The information in

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT On August 13, 2025, NWPX Infrastructure, Inc. and its wholly-owned subsidiaries NWPC, LLC, Geneva Pipe and Precast Company, and Park Environmental Equipment, LLC (together, the “Company”), along with certain of the Company’s other wholly-owned subsidiaries, entered into a Fourth Amendment to Credit Agreement and Ratification of Loan Documents (the “Fourth Amendment”) with Wells Fargo Bank, National Association (“Wells Fargo”), as administrative agent…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On August 7, 2025, NWPX Infrastructure, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2025 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued August 7, 2025 is furnished h…

CHANGES IN REGISTRANT’S CERTIFYING ACCOUNTANT On June 3, 2025, Northwest Pipe Company (the “Company”) was notified that Moss Adams LLP (“Moss Adams”), the Company’s independent registered public accounting firm, merged with Baker Tilly US, LLP effective June 3, 2025. The combined audit practices operate as Baker Tilly US, LLP (“Baker Tilly”). In connection with the notification of the merger, Moss Adams has resigned as the auditors of the Company and the Audit Committee of the Company’s Board…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On April 30, 2025, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2025 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued April 30, 2025 is furnished her…

The filing describes the grant of performance share units and restricted stock units to certain executive officers, which is a routine compensation matter.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On February 26, 2025, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter and year ended December 31, 2024 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued February 26, 202…

The filing details the parameters of the Company’s performance-based cash incentive program for the 2025 fiscal year.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On October 30, 2024, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2024 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued October 30, 2024 is furni…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On July 31, 2024, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2024 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued July 31, 2024 is furnished herewi…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On May 1, 2024, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2024 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued May 1, 2024 is furnished herewith…

The filing describes the grant of performance share units and restricted stock units to named executive officers, which is a routine compensation matter.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On March 4, 2024, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter and year ended December 31, 2023 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued March 4, 2024 is fur…

The filing details the parameters of the Company’s performance-based cash incentive program for the 2024 fiscal year.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On November 2, 2023, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2023 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued November 2, 2023 is furni…

OTHER EVENTS On November 2, 2023, the Company issued a press release announcing that it has authorized a share repurchase program of up to $30 million of its outstanding common stock. The program does not commit to any particular timing or quantity of purchases, and the program may be suspended or discontinued at any time. Under the program, shares may be purchased in open market, including through Rule 10b5‑1 trading plans, or in privately negotiated transactions. Any repurchases will be sub…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION On August 2, 2023, Northwest Pipe Company (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2023 and its current outlook. The press release contains forward-looking statements regarding the Company, and includes cautionary statements identifying important factors that could cause actual results to differ materially from those anticipated. The press release issued August 2, 2023 is furnished here…