Transaction Details

Footnotes

Adoption date of referenced 10b5-1(c) plan is: 08/12/2025 | This transaction was executed in multiple trades at prices ranging from $57.00 to $58.245 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. | This transaction was executed in multiple trades at prices ranging from $56.995 to $58.375 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. | This transaction was executed in multiple trades at prices ranging from $56.97 to $59.23 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. | This transaction was executed in multiple trades at prices ranging from $56.89 to $58.79 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. | Each Restricted Stock Unit represents a contingent right to receive one share of NWPX common stock. | The Restricted Stock Units vest in installments in January of 2026, 2027 and 2028. | 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. | The Performance Shares vest in installments in March of 2026, 2027 and 2028.