BOISE CASCADE Co

11. Segment Information

We operate our business usingtwo reportable segments: BMD and Wood Products. There are no differences in our basis of measurement of segment profit or loss from those disclosed in Note 15, Segment Information, of the Notes to Consolidated Financial Statements in "Item 8. Financial Statements and Supplementary Data" in our 2025 Form 10-K.

BMD and Wood Products segment sales to external customers, including related parties, by product line, are as follows:

(a) Amounts represent sales to external customers. Sales are calculated after intersegment sales eliminations to our BMD segment.

(b) Sales of EWP to external customers are net of the cost of all EWP rebates and sales allowances provided at various stages of the supply chain (including distributors, dealers, and homebuilders). For the three months ended March 31, 2026 and 2025, approximately 77% and 73%, respectively, of Wood Products' EWP sales volumes were to our BMD segment.

An analysis of our operations by segment is as follows:

(a) Substantially all costs included in "Materials, labor, and other operating expenses (excluding depreciation)" for our BMD segment are for inventory purchased for resale. "Materials, labor, and other operating expenses (excluding depreciation)" for our Wood Products segment are the costs associated with Wood Products' manufacturing processes, including wood fiber, labor, glues and resins, energy, operating supplies, maintenance materials, freight, and other manufacturing costs.

(b) Other segment items for our BMD segment includes general and administrative expenses and other income (expense). Other segment items for our Wood Products segment includes selling and distribution expenses, general and administrative expenses, and other income (expense).

(c) Primarily represents intersegment sales from our Wood Products segment to our BMD segment.

(d) Unallocated corporate costs include corporate support staff services, and related assets and liabilities. Support services include, but are not limited to, information technology, human resources, finance, accounting, insurance and legal functions. For the three months ended March 31, 2026, unallocated corporate costs includes $1.8 million of estimated insurance losses related to a fire at our Florien plywood facility.

(e) Other unallocated items include foreign exchange gains and losses, pension expense (excluding service costs) and the change in fair value of interest rate swaps.

(a) 2026 capital expenditures for BMD is reported net of a $2.5 million promissory note, which partially funded the purchase of our previously leased distribution facility in Boise, Idaho.