BOISE CASCADE Co

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-K

Commission File Number:001-35805

(Exact name of registrant as specified in its charter)

1111 West Jefferson Street

Suite 300

Boise, Idaho 83702-5389

(Address of principal executive offices) (Zip Code)

(208)384-6161

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes x Noo

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yeso No x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x Noo

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x Noo

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer x Accelerated filero

Non-accelerated filero Smaller reporting company☐

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange

Act. o

Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. x

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. o

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b). o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes☐ Nox

The aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant on June 30, 2025, the last business day of the registrant's most recently completed second fiscal quarter, based on the last reported trading price of the registrant's common stock on the New York Stock Exchange was approximately $3.2 billion.

There were 35,722,067 shares of the registrant's common stock, $0.01 par value per share, outstanding on February 18, 2026.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s Proxy Statement for its 2026 annual meeting of stockholders are incorporated by reference into Part III of this Form 10-K.

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Cautionary Statement Concerning Forward-Looking Statements

Certain statements made in this Form 10-K contain forward-looking statements. Forward-looking statements are subject to risks and uncertainties that may cause our actual results, performance, or achievements to be materially different from any future results, performance, or achievements expressed or implied by these forward-looking statements. Forward-looking statements include information concerning our future financial performance, business strategy, plans, goals, and objectives.

Statements preceded or followed by, or that otherwise include, the words "believes," "expects," "anticipates," "intends," "project," "targets," "estimates," "plans," "forecast," "is likely to," and similar expressions or future or conditional verbs such as "will," "may," "would," "should," and "could" are generally forward-looking in nature and not historical facts. Such statements are based upon the current beliefs and expectations of our management and are subject to significant risks and uncertainties. Actual results may differ materially from those set forth in the forward-looking statements.

The following factors, among others, could cause our actual results, performance, or achievements to differ from those set forth in the forward-looking statements:

•The commodity nature of a portion of our products and their price movements, which are driven largely by general economic conditions, industry capacity and operating rates, industry cycles that affect supply and demand, and net import and export activity;

•The highly competitive nature of our industry;

•Declines in demand for our products due to competing technologies or materials, as well as changes in building code provisions;

•Disruptions to information systems used to process and store customer, employee, and vendor information, as well as the technology that manages our operations and other business processes;

•Material disruptions and/or major equipment failure at our manufacturing facilities;

•Declining demand for residual byproducts, particularly wood chips generated in our manufacturing operations;

•Labor disruptions, shortages of skilled and technical labor, or increased labor costs;

•Product shortages, loss of key suppliers, and our dependence on third-party suppliers and manufacturers;

•The cost and availability of third-party transportation services used to deliver the goods we distribute and manufacture, as well as our raw materials;

•Cost and availability of raw materials, particularly wood fiber;

•The need to successfully formulate and implement succession plans for key members of our management team;

•Our ability to execute our organic growth and acquisition strategies efficiently and effectively;

•Failures or delays with new or existing technology systems and software platforms;

•Our ability to successfully pursue our long-term growth strategy related to innovation and digital technology;

•Concentration of our sales among a relatively small group of customers, as well as the financial condition and creditworthiness of our customers;

•Impairment of our long-lived assets, goodwill, and/or intangible assets;

•Substantial ongoing capital investment costs, including those associated with organic growth and acquisitions, and the difficulty in offsetting fixed costs related to those investments;

•Our indebtedness, including the possibility that we may not generate sufficient cash flows from operations or that future borrowings may not be available in amounts sufficient to fulfill our debt obligations and fund other liquidity needs;

•Restrictive covenants contained in our debt agreements;

•Changes in or failure to comply with laws and regulations;

•Changes in foreign trade policy, including the imposition of tariffs;

•Compliance with data privacy and security laws and regulations;

•The impacts of climate change and related legislative and regulatory responses intended to reduce climate change;

•Cost of compliance with government regulations, in particular, environmental regulations;

•Exposure to product liability, product warranty, casualty, construction defect, and other claims; and

•Fluctuations in the market for our equity.

Certain of these and other factors are discussed in more detail in "Item 1A. Risk Factors" of this Form 10-K. These factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included in this Form 10-K. While we believe that our forecasts and assumptions are reasonable, we caution that actual results may differ materially. If one or more of these or other risks or uncertainties materialize, or if our underlying assumptions prove to be incorrect, actual results may vary materially from what we projected. Consequently, actual events and results may vary significantly from those included in or contemplated or implied by our forward-looking statements. Any forward-looking statement speaks only as of the date on which such statement is made, and we disclaim any obligation to update any forward-looking statements, except as required by law.