NASDAQ:BLDR

Builders Firstsource Stock Insider Trading

Industrials > Construction

Buy BLDR

*Your capital is at risk

$74.26

-1.11 (-1.47%)

At Close: Jun 03, 2026

Builders FirstSource Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 66.91. In total, the insiders bought 305.18K and sold 74.36K BLDR shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	66.91
● Buy	305.18K shares
● Sell	74.36K shares
79% Buy Activity Moderate Negative Correlation
Sell Signal Low Confidence May 08, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 66.91. Partially supported by a negative historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Steinke Craig Arthur Director	Director	491 Value: $37.4K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Levy Paul S Director	Director	1 049 Value: $80.0K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Christophe Cleveland A Director	Director	491 Value: $37.4K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Boydston Cory Jacobs Director	Director	409 Value: $31.2K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Renz Maria Director	Director	426 Value: $32.5K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Oleary James Director	Director	491 Value: $37.4K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Alexander Mark A Director	Director	409 Value: $31.2K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Hayes William B Director	Director	508 Value: $38.7K
Jun 01, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Charles Dirkson R Director	Director	409 Value: $31.2K
May 18, 2026 Buy	Common Stock J-Other	O'brien Matthew Coley Insider	Other	0 Value: $0
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Ainoa Cheryl Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Milgrim Brett N Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Boydston Cory Jacobs Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Rush David E Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Christophe Cleveland A Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Alexander Mark A Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Renz Maria Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Hayes William B Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Levy Paul S Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Steinke Craig Arthur Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Charles Dirkson R Director	Director	2 558 Value: $188.2K
May 14, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Oleary James Director	Director	2 558 Value: $188.2K
May 08, 2026 Sell	Common Stock, par value $0.01 per share S-Sale	Rush David E Director	Director	5 000 Value: $390.9K
Apr 20, 2026 Buy	Common Stock, par value $0.01 per share	Brenner Alena EVP, Clo And Corp. Sec.	Officer	0 Value: $0
Mar 15, 2026 Buy	Common Stock, par value $0.01 per share A-Award	Trester Matthew Principal Accounting Officer	Officer	1 419 Value: $105.4K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT BUILDERS FIRSTSOURCE

Builders FirstSource, Inc., together with its subsidiaries, manufactures and supplies building materials, manufactured components, and construction services to professional homebuilders, sub-contractors, remodelers, and consumers in the United States. It offers lumber and lumber sheet goods comprising dimensional lumber, plywood, and oriented strand board products that are used in on-site house framing; manufactured products, such as wood floor a...

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