Builders FirstSource 10-Q 2025-09-30

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2025

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 001-40620

BUILDERS FIRSTSOURCE, INC.

(Exact name of registrant as specified in its charter)

(214) 880-3500

(Registrant’s telephone number, including area code)

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

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 ☒ No ☐

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 ☒ No ☐

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.

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. ☐

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).Yes ☐ No ☒

The number of shares of the issuer’s common stock, par value $0.01, outstanding as of October 24, 2025, was 110,580,581.

BUILDERS FIRSTSOURCE, INC.

Index to Form 10-Q

P****ART I — FINANCIAL INFORMATION

I****tem 1. Financial Statements (unaudited)

BUILDERS FIRSTSOURCE, INC. AND SUBSIDIARIES

C****ONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

The accompanying notes are an integral part of these condensed consolidated financial statements.

BUILDERS FIRSTSOURCE, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDA****TED BALANCE SHEETS

(Unaudited)

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The following discussion of our financial condition and results of operations should be read in conjunction with the Management’s Discussion and Analysis of Financial Condition and Results of Operations and the consolidated financial statements and notes thereto for the year ended December 31, 2024, included in our 2024 Form 10-K. The following discussion and analysis should also be read in conjunction with the unaudited condensed consolidated financial statements appearing elsewhere in this report.

Cautionary Statement

Statements in this report and the schedules hereto that are not purely historical facts or that necessarily depend upon future events, including statements about expected market share gains, forecasted financial performance, industry and business outlook or other statements about anticipations, beliefs, expectations, hopes, 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. All forward-looking statements are based upon currently available information and the Company’s current assumptions, expectations and projections about future events. Forward-looking statements are by nature inherently uncertain, and actual results or events may differ materially from the results or events described in the forward-looking statements as a result of many factors. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. Forward-looking statements involve risks and uncertainties, many of which are beyond the Company’s control or may be currently unknown to the Company, that could cause actual events or results to differ materially from the events or results described in the forward-looking statements; such risks or uncertainties include those related to the Company’s growth strategies, including acquisitions, organic growth and digital and technology strategies, including our ability to drive growth by incorporating artificial intelligence and machine learning solutions into our platform, or the dependence of the Company’s revenues and operating results on, among other things, the homebuilding industry and, to a lesser extent, repair and remodel activity, which in each case is dependent on economic conditions, including inflation, interest rates, home size and affordability, consumer confidence, labor and supply shortages, and also lumber and other commodity prices, which may be impacted by changes in tariffs. The Company may not succeed in addressing these and other risks. Further information regarding the risk factors that could affect our financial and other results can be found in the risk factors section of the Company’s 2024 Form 10-K filed with the Securities and Exchange Commission. Consequently, all forward-looking statements in this report are qualified by the factors, risks and uncertainties contained therein.

COMPANY OVERVIEW

We are a leading provider of building materials for professional builders in new residential construction and repair and remodeling. We deliver integrated homebuilding solutions by manufacturing, supplying, and installing a full range of structural and related building products. The Company operates approximately 585 locations in 43 states across the United States, which are internally organized into geographic operating divisions. Due to the similar economic characteristics, categories of products, distribution methods and customers, our operating divisions are aggregated into one reportable segment.

Our leading network of strategically located manufacturing facilities produces factory-built roof and floor trusses, wall panels, vinyl windows, custom millwork and trim, as well as engineered wood that we design and cut specifically for each home. We also assemble interior and exterior doors into pre-hung units for easy installation. Additionally, we distribute a wide range of building products, including lumber, sheet goods, windows, doors, millwork, and specialty items. Our services, which vary by market, include professional installation, turnkey framing, and shell construction. Supported by the latest construction innovations and digital solutions, we help drive greater efficiency across homebuilding.

RECENT DEVELOPMENTS

Business Combinations

Through September 30, 2025, we have completed the acquisitions of Alpine Lumber, Cluss Lumber, Truckee Tahoe, and St. George Truss for an aggregate purchase price of approximately $910.8 million, net of cash acquired. Among other opportunities, these acquisitions further expand our market footprint and provide additional operations in our value-added product categories and allow us to better serve our customers in these markets. These transactions are described in further detail in Note 2 to the condensed consolidated financial statements included in Item 1 of this quarterly report on Form 10-Q.

Company Shares Repurchases

On April 30, 2025, the Company’s board of directors authorized a new repurchase plan of up to $500.0 million of the Company’s outstanding shares of common stock. The new repurchase plan replaced the Company’s prior $1.0 billion share repurchase authorization announced in August 2024, which had approximately $100.0 million remaining under its authorization.

During the nine months ended September 30, 2025, the Company repurchased 3.4 million shares at a weighted average price of $118.65 per share, for a total cost of $403.6 million, inclusive of applicable fees and taxes.

Debt Transactions

On May 8, 2025, the Company completed a private offering of $750.0 million in aggregate principal amount of 6.750% senior unsecured notes due 2035, at an issue price equal to 100% of par value. The net proceeds from the offering were used to repay indebtedness outstanding under the Revolving Facility.

On May 20, 2025, the Company amended the Revolving Facility to increase the existing revolving commitments of $1.8 billion with the new revolving commitments of $2.2 billion, and to extend the maturity date to May 20, 2030.

These transactions are described in Note 8 to the condensed consolidated financial statements included in Item 1 of this quarterly report on Form 10-Q. From time to time, based on market conditions and other factors and subject to compliance with applicable laws and regulations, the Company may repurchase or call its notes, repay debt, repurchase shares of its common stock or otherwise enter into transactions regarding its capital structure.

Market Information

Our common stock is dual listed on the New York Stock Exchange and the NYSE Texas, Inc. (the “NYSE Texas”) under the trading symbol "BLDR." The listing and trading of the common stock on the NYSE Texas commenced on August 12, 2025.

CURRENT OPERATING CONDITIONS AND OUTLOOK

As a result of the U.S. federal government shutdown, September 2025 housing starts have not been published as of the date of this quarterly report on Form 10-Q. According to the U.S. Census Bureau, as of August 2025, the seasonally adjusted annual rate (“SAAR”) U.S. total housing starts were 1.3 million and the SAAR U.S. single-family housing starts were 890 thousand, a decrease of 6.0% and 11.7%, respectively, compared to the comparable period of 2024. A composite of third-party sources, including the National Association of Home Builders and John Burns Research and Consulting, are forecasting 1.3 million U.S. total housing starts and 940 thousand U.S single-family housing starts for 2025, which are decreases of 2.5% and 7.4%, respectively from 2024.

We believe the housing industry’s long-term outlook is positive and that it remains underbuilt due to growth in the underlying demographics compared to historical new construction levels. However, macroeconomic uncertainty, including fluctuations in interest rates, stock market volatility, impact of changes in tariffs and inflation, may continue to pressure near-term housing industry demand as homes are less affordable for consumers, investors and builders. We believe we are well-positioned to accelerate growth and capture market share as industry conditions improve in the long term. We will continue to focus on working capital by closely monitoring the credit exposure of our customers, maintaining the right level of inventory and by working with our vendors to improve payment terms. We strive to achieve the appropriate balance of short-term expense control while maintaining the expertise and capacity to grow the business.

SEASONALITY AND OTHER FACTORS

Our first and fourth quarters have historically been, and are generally expected to continue to be, adversely affected by weather causing reduced construction activity during these quarters. In addition, quarterly results historically have reflected, and are expected to continue to reflect, fluctuations from period to period arising from the following:

The cyclical nature of the homebuilding industry;

General economic conditions in the markets in which we compete;

The volatility of lumber prices;

The pricing policies of our competitors;

Disruptions in our supply chain; and

The production schedules of our customers.

The composition and level of working capital typically change during periods of increasing sales as we carry more inventory and receivables. Working capital levels typically increase in the first and second quarters of the year due to higher sales during the peak residential construction season. These increases may result in negative operating cash flows during this peak season, which historically have been financed through available cash and borrowing availability under credit facilities. Generally, collection of receivables and reduction in inventory levels following the peak building and construction season positively impact cash flow.

RESULTS OF OPERATIONS

The following table sets forth the percentage relationship to net sales of certain costs, expenses and income items:

Three Months Ended September 30, 2025 Compared with the Three Months Ended September 30, 2024

Net Sales. Net sales for the three months ended September 30, 2025, were $3.9 billion, a 6.9% decrease from net sales of $4.2 billion for the three months ended September 30, 2024. Core organic sales decreased net sales by 10.6%, primarily due to decreases in the multi-family and single-family customer segments, while commodity price deflation decreased net sales by another 1.1%. These decreases were partially offset by an increase in net sales from acquisitions of 4.8%.

The following table shows net sales classified by product category:

(1)

Manufactured products and windows, doors and millwork are collectively referred to as total value-added products.

We experienced decreased net sales in our manufactured products category primarily due to decreased single-family activity due to lower housing starts and decreased multi-family activity, partially offset by an increase in net sales from acquisitions. Our windows, doors, and millwork declined primarily due to decreased single-family activity due to lower housing starts. Our lumber and lumber sheet goods category decreased primarily due to lower single-family housing starts and commodity price deflation, partially offset by an increase in net sales from acquisitions. For the comparable period, specialty building products remained relatively consistent.

Gross Margin. Gross margin decreased $0.2 billion to $1.2 billion. Our gross margin percentage decreased to 30.4% in the third quarter of 2025 from 32.8% in the third quarter of 2024, a 2.4% decrease. This decrease was primarily driven by a below-normal starts environment.

Selling, General and Administrative Expenses. Selling, general and administrative expenses increased by $12.4 million, or 1.3%, primarily due to additional operating expenses from locations acquired within the last twelve months and our ongoing enterprise resource planning (“ERP”) system implementation, partially offset by lower variable compensation due to decreased sales and the absence of prior year asset write-offs.

As a percentage of net sales, selling, general and administrative expenses increased to 24.6%, up from 22.6%, for the three months ended September 30, 2025 and 2024, respectively, primarily attributable to reduced operating leverage.

Interest Expense, Net. Interest expense was $69.3 million in the third quarter of 2025, an increase of $15.0 million from the third quarter of 2024. The increase was primarily due to higher average debt balances.

Income Tax Expense. We recorded income tax expense of $37.1 million and $89.0 million in the third quarters of 2025 and 2024, respectively. The decrease in the tax expense was primarily driven by a decrease in income before income taxes in the current period. Our effective tax rate was 23.3% in the third quarter of 2025, a decrease from 23.8% in the third quarter of 2024, primarily related to decreased permanent and other differences.

Nine Months ended September 30, 2025 Compared with the Nine Months ended September 30, 2024

Net Sales. Net sales for the nine months ended September 30, 2025, were $11.8 billion, a 5.9% decrease from net sales of $12.6 billion for the nine months ended September 30, 2024. Core organic sales decreased net sales by 9.1%, primarily due to decreases in the multi-family and single-family customer segments, while commodity price deflation and one fewer selling day decreased net sales by another 1.2% and 0.5%, respectively. These decreases were partially offset by increased net sales from acquisitions of 4.9%.

The following table shows net sales classified by product category:

(1)

Manufactured products and windows, doors and millwork are collectively referred to as total value-added products.

We experienced decreased net sales in our manufactured products category primarily due to decreased single-family activity due to lower housing starts and decreased multi-family activity, partially offset by an increase in net sales from acquisitions. Our windows, doors, and millwork declined primarily due to decreased single-family activity due to lower housing starts. Our lumber and lumber sheet goods category decreased primarily due to lower single-family housing starts and commodity price deflation, partially offset by an increase in net sales from acquisitions. For the comparable period, specialty building products remained relatively flat.

Gross Margin. Gross margin decreased $0.5 billion to $3.6 billion, and our gross margin percentage decreased to 30.5% for the nine months ended September 30, 2025, from 33.0% in the nine months ended September 30, 2024, a 2.5% decrease. This decrease was primarily attributed to a lower starts environment.

Selling, General and Administrative Expenses. Selling, general and administrative expenses increased $31.5 million, or 1.1%. This increase was primarily due to additional operating expenses from locations acquired within the last twelve months and our ongoing ERP system implementation, partially offset by lower variable compensation due to decreased sales and the absence of prior year asset write-offs.

As a percentage of net sales, selling, general and administrative expenses increased to 24.4% up from 22.7% for the nine months ended September 30, 2025 and 2024, respectively, primarily attributable to reduced operating leverage.

Interest Expense, Net. Interest expense was $206.1 million in the nine months ended September 30, 2025, an increase of $51.5 million from the nine months ended September 30, 2024. Interest expense increased primarily due to higher average debt balances.

Income Tax Expense. We recorded income tax expense of $114.6 million and $248.8 million for the nine months ended September 30, 2025 and 2024, respectively. The decrease in tax expense was primarily driven by a decrease in income before income taxes in the current period. Our effective tax rate was 22.1% in the first nine months ended September 30, 2025, an increase from 21.9% in the first nine months ended September 30, 2024, primarily related to a decrease in our stock-based compensation windfall benefit, partially offset by permanent and other differences.

LIQUIDITY AND CAPITAL RESOURCES

Our primary capital requirements are to fund working capital needs and operating expenses, meet required interest and principal payments, and to fund capital expenditures and potential future growth opportunities. Our capital resources at September 30, 2025, consist of cash on hand and borrowing availability under our Revolving Facility.

Our Revolving Facility is primarily used for working capital, general corporate purposes and funding capital expenditures and growth opportunities. In addition, we may use borrowings under the Revolving Facility to facilitate debt repayment and consolidation, and to fund share repurchases. Availability under the Revolving Facility is determined by a borrowing base. Our borrowing base consists of accounts receivable, inventory, and qualified cash that all meet specific criteria contained within the credit agreement, minus agent specified reserves. Net excess borrowing availability is equal to the maximum borrowing amount minus outstanding borrowings and letters of credit.

The following table shows our borrowing base and excess availability as of:

(1)

The prior year amounts have been conformed to current period presentation. There is no impact on gross availability or net excess borrowing availability on the Revolving Facility as previously reported.

As of September 30, 2025, we had no outstanding borrowings under our Revolving Facility, and our net excess borrowing availability was $1.8 billion after being reduced by outstanding letters of credit totaling $79.6 million. Excess availability must equal or exceed a minimum specified amount, currently $187.0 million, or we are required to meet a fixed charge coverage ratio of 1.00 to 1.00. We were not in violation of any covenants or restrictions imposed by any of our debt agreements at September 30, 2025.

Liquidity

Our liquidity at September 30, 2025, was $2.1 billion, which consists of net borrowing availability under the Revolving Facility and cash on hand.

Our level of indebtedness results in significant interest expense and could have the effect of, among other things, reducing our flexibility to respond to changing business and economic conditions. From time to time, based on market conditions and other factors and subject to compliance with applicable laws and regulations, we may repurchase or call our notes, repay, refinance or modify our debt or otherwise enter into transactions regarding our capital structure.

If industry conditions deteriorate or if we pursue additional acquisitions, we may be required to raise additional funds through the sale of capital stock or debt in the public capital markets or in privately negotiated transactions. There can be no assurance that any of these financing options would be available on favorable terms, if at all. Alternatives to help supplement our liquidity position could include, but are not limited to, idling or permanently closing additional facilities, adjusting our headcount in response to current business conditions, attempts to renegotiate leases, managing our working capital and/or divesting of non-core businesses. There are no assurances that these steps would prove successful or materially improve our liquidity position.

Consolidated Cash Flows

Cash provided by operating activities was $1.0 billion for the nine months ended September 30, 2025, compared to cash provided by operating activities of $1.5 billion for the nine months ended September 30, 2024. The decrease in cash provided by operating activities was largely the result of lower net income in the first nine months of 2025.

For the nine months ended September 30, 2025, cash used in investing activities increased $0.6 billion compared to the nine months ended September 30, 2024, primarily due to using an additional $0.6 billion of cash for acquisitions.

Cash provided by financing activities was $0.3 billion for the nine months ended September 30, 2025, which consisted primarily of a net $0.7 billion received for the issuance of the 6.75% 2035 Notes, offset by $0.4 billion for repurchases of common stock. Cash used in financing activities was $0.7 billion for the nine months ended September 30, 2024, which consisted primarily of $1.2 billion for repurchases of common stock and $0.5 billion in net payments on the Revolving Facility, offset by a net $1.0 billion received for the issuance of the 6.375% 2034 Notes.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Critical accounting policies are those that are both important to the accurate portrayal of a company’s financial condition and results, and require subjective or complex judgments, often as a result of the need to make estimates about the effect of matters that are inherently uncertain.

To prepare financial statements that conform to generally accepted accounting principles, we make estimates and assumptions that affect the amounts reported in our financial statements and accompanying notes. Certain estimates are particularly sensitive due to their significance to the financial statements and the possibility that future events may be significantly different from our expectations.

Refer to Part II, “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2024 Form 10-K for a discussion of our critical accounting estimates and assumptions.

RECENT ACCOUNTING PRONOUNCEMENTS

Information regarding recent accounting pronouncements is discussed in Note 1 to the condensed consolidated financial statements included in Item 1 of this quarterly report on Form 10-Q.

We may experience changes in interest expense if changes in our debt occur. Changes in market interest rates could also affect our interest expense. Borrowings under the Revolving Facility bear interest at either a base rate or SOFR, plus, in each case, an applicable margin. We did not have any outstanding borrowings on the Revolving Facility as of September 30, 2025. The Revolving Facility also assesses variable commitment and outstanding letter of credit fees based on quarterly average loan utilization. Our 4.25% 2032 Notes, 6.375% 2034 Notes, 6.75% 2035 Notes, 6.375% 2032 Notes, and 5.00% 2030 Notes, bear interest at a fixed rate, and therefore our interest expense related to these notes would not be affected by an increase in market interest rates.

We purchase certain materials, including lumber products, which are then sold to customers, as well as used as direct production inputs for our manufactured products that we deliver. Short-term changes in the cost of these materials and the related in-bound freight costs, some of which are subject to significant fluctuations, are sometimes, but not always, passed on to our customers. Delays in our ability to pass on material price increases to our customers can adversely impact our operating results.

Disclosure Controls Evaluation and Related CEO and CFO Certifications. Our management, with the participation of our principal executive officer (“CEO”) and principal financial officer (“CFO”), conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the period covered by this quarterly report.

Certifications of our CEO and our CFO, which are required in accordance with Rule 13a-14 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), are attached as exhibits to this quarterly report. This “Controls and Procedures” section includes the information concerning the controls evaluation referred to in the certifications, and it should be read in conjunction with the certifications for a more complete understanding of the topics presented.

Limitations on the Effectiveness of Controls. We do not expect that our disclosure controls and procedures will prevent all errors and all fraud. A system of controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the system are met. Because of the limitations in all such systems, no evaluation can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. Furthermore, the design of any system of controls and procedures is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions, regardless of how unlikely. Because of these inherent limitations in a cost-effective system of controls and procedures, misstatements or omissions due to error or fraud may occur and not be detected.

Scope of the Controls Evaluation. The evaluation of our disclosure controls and procedures included a review of their objectives and design, the Company’s implementation of the controls and procedures and the effect of the controls and procedures on the information generated for use in this quarterly report. In the course of the evaluation, we sought to identify whether we had any data errors, control problems or acts of fraud and to confirm that appropriate corrective action, including process improvements, were being undertaken if needed. This type of evaluation is performed on a quarterly basis so that conclusions concerning the effectiveness of our disclosure controls and procedures can be reported in our quarterly reports on Form 10-Q. Many of the components of our disclosure controls and procedures are also evaluated by our internal audit department, by our legal department and by personnel in our finance organization. The overall goals of these various evaluation activities are to monitor our disclosure controls and procedures on an ongoing basis, and to maintain them as dynamic systems that change as conditions warrant.

Conclusions Regarding Disclosure Controls. Based on the required evaluation of our disclosure controls and procedures, our CEO and CFO have concluded that, as of September 30, 2025, we maintained disclosure controls and procedures that were effective in providing reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our CEO and CFO, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting. During the period covered by this report, there were no changes in our internal control over financial reporting identified in connection with the evaluation described above that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II — OTHER INFORMATION

The Company has a number of known and threatened construction defect legal claims. While these claims are generally covered under the Company’s existing insurance programs to the extent any loss exceeds the deductible, there is a reasonable possibility of loss that is not able to be estimated at this time because (i) many of the proceedings are in the discovery stage, (ii) the outcome of future litigation is uncertain, and/or (iii) the complex nature of the claims.

In addition, we are involved in various other claims and lawsuits incidental to the conduct of our business in the ordinary course. We carry insurance coverage in such amounts in excess of our self-insured retention as we believe to be reasonable under the circumstances and that may or may not cover any or all of our liabilities in respect of such claims and lawsuits.

Although the ultimate disposition of these proceedings cannot be predicted with certainty, management believes the outcome of any such claims that are currently pending or threatened, either individually or on a combined basis, will not have a material adverse effect on our consolidated financial position, cash flows or results of operations. However, there can be no assurances that future adverse judgments and costs would not be material to our results of operations or liquidity for a particular period.

In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part 1, “Item 1A. Risk Factors” in our 2024 Form 10-K, which could materially affect our business, financial condition or future results. The risks described in our 2024 Form 10-K are not the only risks facing our Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results.

There were no material changes to the risk factors reported in Part 1, “Item 1A. Risk Factors” in our 2024 Form 10-K.

Item 2. Unregistered Sales of Equi****ty Securities and Use of Proceeds

Company Stock Repurchases

The following table provides information with respect to the purchases of our common stock during the third quarter of fiscal year 2025:

(1)

On April 30, 2025, the Company announced the board of directors’ termination of the prior share repurchase authorization and approval of a new share repurchase authorization of up to $500.0 million of the Company’s outstanding shares of common stock.

In the third quarter of 2025, the Company did not repurchase or retire any shares pursuant to share repurchase plans authorized by our board of directors. The 5,565 shares presented in the table above represent stock tendered in order to meet tax withholding requirements for restricted stock units vested. Share repurchases under the program may be made through a variety of methods, which may include open market purchases, block trades, accelerated share repurchases, trading plans in accordance with Rule 10b-5 or Rule 10b-18 under the Exchange Act, or any combination of such methods. The program does not obligate the Company to acquire any particular amount of its common stock, and the share repurchase program may be suspended or discontinued at any time at the Company’s discretion.

No****ne.

• Filed herewith.

** Builders FirstSource, Inc. is furnishing, but not filing, the written statement pursuant to Title 18 United States Code 1350, as added by Section 906 of the Sarbanes-Oxley Act of 2002, of Peter M. Jackson, our Chief Executive Officer, and Pete R. Beckmann, our Chief Financial Officer.

+ Indicates a management contract or compensatory plan or arrangement.

SIGNAT****URES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

October 30, 2025

October 30, 2025

October 30, 2025