Boise Cascade Reaches Agreement to Purchase Holden Humphrey

Boise Cascade Company ("Boise Cascade" or the "Company") (NYSE:BCC) announced today that it has reached an agreement to purchase Humphrey Company, Inc. (d/b/a Holden Humphrey), a leading two-step distributor of building materials located in Chicopee, Massachusetts, with approximately $145 million in revenue over the last 12 months.

Founded in 1987, Holden Humphrey's distribution facility serves lumber dealers and one-step distributors throughout New England, New York, and New Jersey. Holden Humphrey offers a wide range of specialty building product categories, with an emphasis on siding, wood decking, and trim products. They are a large supplier of James Hardie^® siding, and this acquisition will also further strengthen distribution partnerships with CertainTeed and Henry^®. In addition, the acquisition will also enable Boise Cascade to expand their product line into several areas that are new to the Company in this geography.

Boise Cascade currently operates 39 distribution locations in the U.S., and this new location further expands the Company's distribution business in the northeast region.

"Like Boise Cascade, Holden Humphrey's success is built on the strength of their long-standing relationships with their customers and suppliers, and they have a proven track record of profitable growth in the northeast region," said Jo Barney, Executive Vice President, Building Materials Distribution. "This acquisition aligns with our Company's growth strategy and enhances our footprint in the northeast. In addition to extending our reach with existing products, this acquisition will enable us to expand our product line for our customers in this geography. I look forward to welcoming the Holden Humphrey team to Boise Cascade."

Lance Humphrey, President of Holden Humphrey, said: "For the past 38 years, my business partner, Peter Alexander, and I have made it our mission to provide top quality products and services to our customers, build trusting relationships with our suppliers, and offer sound career opportunities for our employees. We believe Boise Cascade is the best company to carry on with the business, and we are enthusiastic about Boise Cascade's ability to continue this tradition by expanding our team's capabilities and creating new opportunities for our employees."

The transaction is expected to close in December 2025, subject to customary closing conditions.

About Boise Cascade

Boise Cascade is one of the largest producers of engineered wood products and plywood in North America and a leading U.S. wholesale distributor of building products. For more information, please visit www.bc.com.

Forward-Looking Statements

Statements in this news release that are not purely historical facts or that necessarily depend on future events, including statements about anticipations, beliefs, expectations, intentions or strategies for the future, may be forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended. Readers are cautioned not to place undue reliance on forward-looking statements. In addition, oral statements made by our directors, officers and employees to the investor and analyst communities, media representatives and others, depending upon their nature, may also constitute forward-looking statements. As with the forward-looking statements included in this release, these forward-looking statements are by nature inherently uncertain, and actual results may differ materially as a result of many factors. All forward-looking statements are based upon information available to Boise Cascade on the date this release was submitted. Boise Cascade undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. Any forward-looking statements involve risks and uncertainties that could cause actual events or results to differ materially from the events or results described in the forward-looking statements, including satisfaction of required regulatory approvals, the integration of the acquired assets, the Company's growth strategies, or the Company's revenues and operating results being highly dependent on, among other things, new residential construction, commodity wood products prices and the economy. Boise Cascade may not succeed in addressing these and other risks. Further information regarding factors that could affect our financial and other results can be found in the risk factors section of Boise Cascade's most recent annual report on Form 10-K filed with the Securities and Exchange Commission (the "SEC") and in the other reports filed by the Company with the SEC. Consequently, all forward-looking statements in this release are qualified by the factors, risks and uncertainties contained therein.

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