HIBBS KELLY E. 4

What Happened Kelly E. Hibbs, SVP, Chief Financial Officer & Treasurer of Boise Cascade Co. (BCC), was granted 6,345 restricted stock units (RSUs) on 2026-03-01 (award price $0). On the same date a total of 7,908 shares were withheld to cover tax obligations: 5,667 shares withheld at $82.74 (value $468,888) and 2,241 shares withheld at $82.74 (value $185,420), totaling $654,308. The withholdings are tax-withholding actions (code F), not open-market sales.

Key Details

• Transaction date(s): 2026-03-01; Form filed 2026-03-03 reporting those transactions.
• Grant: 6,345 RSUs @ $0 (award).
• Withheld for taxes (dispositions): 5,667 shares @ $82.74 = $468,888 (footnote F2); 2,241 shares @ $82.74 = $185,420 (footnote F3). Total value withheld: $654,308.
• Shares owned after transaction: Not disclosed in this Form 4.
• Footnotes: F1 = RSU award deliverable in three equal tranches on 2027-03-01, 2028-03-01 and 2029-03-01. F2 = PSU shares withheld for taxes. F3 = RSU shares withheld for taxes.
• Filing timing: Reported on 2026-03-03 for transactions dated 2026-03-01 (file date shown on Form 4).

Context This was a grant of restricted stock units with contemporaneous share withholding to satisfy tax liabilities — a routine, non-market transaction (cashless tax withholding). The underlying RSUs are scheduled to be delivered in three equal tranches over the next three years (2027–2029), so the award vests/settles over time rather than being an immediate share purchase or sale.