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美国

证券交易委员会

华盛顿特区 20549

表格 8-K

当前报告

根据 1934 年《证券交易法》第 13 或 15(d) 条

报告日期（最早报告事件日期）：2026 年 10 月 29 日

BUILDERS FIRSTSOURCE, INC.

（注册人章程中指定的准确名称）

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n	\n
特拉华州	001-40620	52-2084569
（注册成立所在州或其他司法管辖区）	（委员会档案编号）	（国税局雇主识别号）

6031 Connection Drive Suite 400
Irving，Texas		75039
（主要行政办公室地址）		（邮政编码）

注册人电话号码（含区号）： (214) 880-3500

（自上次报告以来如有变更，填写原名称或原地址）

如果本 8-K 表格申报旨在同时履行注册人根据以下任一规定承担的申报义务，请勾选下面相应的方框：

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n
☐	根据《证券法》规则 425 进行的书面通信（17 CFR 230.425）

☐	根据《交易法》规则 14a-12 提交的征集材料（17 CFR 240.14a-12）

☐	根据《交易法》规则 14d-2(b) 进行的要约收购开始前通信（17 CFR 240.14d-2(b)）

☐	根据《交易法》规则 13e-4(c) 进行的发行人要约收购开始前通信（17 CFR 240.13e-4(c)）

根据该法第 12(b) 条注册的证券：

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n	\n
各类别证券名称		交易代码		各证券上市交易所名称
普通股，每股面值 $0.01		BLDR		纽约证券交易所
				NYSE Texas

请勾选标记，说明注册人是否为《1933 年证券法》规则 405（本章 § 230.405）或《1934 年证券交易法》规则 12b-2（本章 § 240.12b-2）所定义的新兴成长型公司。

新兴成长型公司 ☐

如果注册人为新兴成长型公司，请勾选标记，说明其是否选择不使用《交易法》第 13(a) 条规定的、遵守任何新订或修订财务会计准则的延长过渡期。 ☐

第 2.02 项经营业绩和财务状况。

2026 年 10 月 29 日，Builders FirstSource, Inc. 发布了随附的新闻稿（附件 99.1），报告其截至 2026 年 9 月 30 日的三个月和九个月的财务业绩。

第 9.01 项财务报表和附件。

(d) 附件。

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n
附件编号	说明
99.1	Builders FirstSource, Inc. 于 2026 年 10 月 29 日发布的新闻稿，报告其截至 2026 年 9 月 30 日的三个月和九个月的财务业绩。

104	封面交互式数据文件——封面 XBRL 标签嵌入在 Inline XBRL 文档中

本报告第 2.02 项和第 9.01 项以及随附附件 99.1 所含的全部信息均为提供的信息，不应被视为根据经修订的《1934 年证券交易法》第 18 条“提交”，也不得通过引用纳入根据经修订的《1933 年证券法》提交的任何文件。

签名

根据《1934 年证券交易法》的要求，注册人已正式授权下述签署人代表其签署本报告。

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n
			BUILDERS FIRSTSOURCE, INC.

日期：	2026 年 10 月 29 日	签署人：	/s/ Alena Brenner
			Alena Brenner，执行副总裁、首席法务官兼公司秘书

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第 2.02 项 经营业绩和财务状况。

第 2.02 项经营业绩和财务状况。