---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-057113"
form_type: "8-K"
ticker: "BLDR"
cik: "0001316835"
company_name: "Builders FirstSource, Inc."
filed_at: "2023-11-01T23:59:59+00:00"
generated_at: "2026-06-09T02:06:32.114454+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Builders FirstSource Q3 net sales $4.5B (-21.3%); net income $451.5M (-38.8% YoY); updates 2023 guidance

## Summary
- Net sales $4.5B, down 21.3% YoY; core organic sales -13.5%, commodity deflation -9.1%.
- Net income $451.5M ($3.59 EPS), down 38.8%; adjusted EPS $4.24, down 18.5%.
- Adjusted EBITDA $813.3M, margin 17.9% (-240 bps YoY); liquidity $1.1B, net debt/EBITDA 1.1x.
- Repurchased 1.7M shares in Q3; YTD repurchased $1.6B, reducing shares outstanding by 11.2%.
- 2023 guidance: net sales $16.8-$17.1B; adjusted EBITDA $2.7-$2.8B; free cash flow $1.8-$2.0B.

## SEC filing metadata
- accession: 0000950170-23-057113
- form_type: 8-K
- ticker: BLDR
- cik: 0001316835
- company_name: Builders FirstSource, Inc.
- filed_at: 2023-11-01T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1316835/000095017023057113/0000950170-23-057113-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1316835/000095017023057113/bldr-20231101.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-057113
- JSON: https://secwatch.observer/filing/0000950170-23-057113.json
- Plain text: https://secwatch.observer/filing/0000950170-23-057113.txt

## Key facts
- Earnings Releases
  Builders FirstSource, Inc. reported third quarter ended September 30, 2023 results: revenue $4.5 billion, net income $451.5 million, EPS $3.59 per diluted share. Guidance lowered.
  - Period: third quarter ended September 30, 2023
  - Revenue: $4.5 billion
  - Net income: $451.5 million
  - EPS: $3.59 per diluted share
  - Guidance: lowered
  - Result: reported results
  source text: September 30, 2023. --- EX-99.1 (EX-99.1) --- EX-99.1 For Immediate Release Builders FirstSource Reports Third Quarter 2023 Results and Updates 2023 Guidance Net sales of $4.5 billion, a decrease of 21.3% Net income of $451.5 million Earnings per diluted share of $3.59 per share Adjusted EBITDA of $813.3 million at a margin of 17.9% Repurchased 1.7 million
  evidence_url: https://www.sec.gov/Archives/edgar/data/1316835/000095017023057113/0000950170-23-057113-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.