OTHER INFORMATION
−Removed: During the three months ended September 30, 2025, none of Boise Cascade's directors or officers adopted , terminated or modified a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K of the Securities Act of 1933).
+Added: During the three months ended March 31, 2026, none of Boise Cascade's directors or officers adopted , terminated or modified a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K of the Securities Act of 1933).
Number Description
+Added: Form of 2026 Restricted Stock Unit Agreement under the 2025 Boise Cascade Omnibus Incentive Plan
+Added: Form of 2026 Performance Stock Unit Agreement under the 2025 Boise Cascade Omnibus Incentive Plan
+Added: Form of 2026 Director Restricted Stock Unit Agreement under the 2025 Boise Cascade Omnibus Incentive Plan
CEO Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
14 unchanged sentences
Senior Vice President, Chief Financial Officer and Treasurer
−Removed: November 3, 2025
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.