NYSE:CNR

Cornerstone Building Brands Stock Insider Trading

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Buy CNR

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$94.57

+1.40 (+1.50%)

At Close: Jun 02, 2026

Cornerstone Building Brands Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -40.86. In total, the insiders bought 693.29K and sold 687.01K CNR 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)	-40.86
● Buy	693.29K shares
● Sell	687.01K shares
59% Buy Activity Moderate Negative Correlation
Sell Signal Medium Confidence Mar 18, 2026 Analysis Breakdown: Supported by a negative Insider Power Score of -40.86. 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
Feb 17, 2026 Buy	Common stock, par value $0.01 per share A-Award	Kriegshauser Patrick A Director	Director	1 610 Value: $139.4K
Feb 17, 2026 Buy	Common stock, par value $0.01 per share A-Award	Brock James A Executive Chair And CEO	CEO / President	21 190 Value: $1.84M
Feb 17, 2026 Buy	Common stock, par value $0.01 per share A-Award	Slone Deck SVP, Strategy & Public Policy	Officer	5 060 Value: $438.2K
Nov 13, 2025 Sell	Common stock, par value $0.01 per share G-Gift	Brock James A Executive Chair And CEO	CEO / President	140 760 Value: $0
Nov 13, 2025 Buy	Common stock, par value $0.01 per share G-Gift	Brock James A Executive Chair And CEO	CEO / President	140 760 Value: $11.6M
Oct 09, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Rothka John Chief Accounting Officer	Officer	1 000 Value: $100.0K
Oct 09, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Rothka John Chief Accounting Officer	Officer	1 000 Value: $100.0K
Oct 08, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Rothka John Chief Accounting Officer	Officer	1 000 Value: $95.0K
Oct 08, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Rothka John Chief Accounting Officer	Officer	1 000 Value: $95.0K
Oct 03, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Rothka John Chief Accounting Officer	Officer	2 500 Value: $225.0K
Oct 03, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Rothka John Chief Accounting Officer	Officer	2 500 Value: $225.0K
Sep 25, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Navarre Richard A Director	Director	5 000 Value: $411.0K
Sep 25, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Navarre Richard A Director	Director	5 000 Value: $411.0K
Sep 17, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Kriegshauser Patrick A Director	Director	3 043 Value: $234.5K
Sep 17, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Kriegshauser Patrick A Director	Director	3 043 Value: $234.5K
May 20, 2025 Sell	Common stock, par value $0.01 per share G-Gift	Brock James A Executive Chair	Officer	165 200 Value: $0
May 20, 2025 Buy	Common stock, par value $0.01 per share G-Gift	Brock James A Executive Chair	Officer	165 200 Value: $11.8M
May 20, 2025 Buy	Common stock, par value $0.01 per share G-Gift	Brock James A Executive Chair	Officer	165 200 Value: $11.8M
May 20, 2025 Sell	Common stock, par value $0.01 per share G-Gift	Brock James A Executive Chair	Officer	165 200 Value: $0
May 09, 2025 Buy	Common stock, par value $0.01 per share P-Purchase	Lang Paul A Chief Executive Officer	CEO / President	7 500 Value: $502.1K
May 09, 2025 Buy	Common stock, par value $0.01 per share P-Purchase	Lang Paul A Chief Executive Officer	CEO / President	7 500 Value: $502.1K
Mar 31, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Koeppel Holly K Director	Director	4 771 Value: $357.7K
Mar 31, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Koeppel Holly K Director	Director	4 044 Value: $306.0K
Mar 31, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Koeppel Holly K Director	Director	4 044 Value: $306.0K
Mar 31, 2025 Sell	Common stock, par value $0.01 per share S-Sale	Koeppel Holly K Director	Director	4 771 Value: $357.7K

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 CORNERSTONE BUILDING BRANDS INC

Cornerstone Building Brands, Inc., together with its subsidiaries, designs, engineers, manufactures, markets, and installs external building products for the commercial, residential, and repair and remodel markets in the United States, Canada, Mexico, and internationally. The company operates through three segments: Windows, Siding, and Commercial. Its Windows segment provides vinyl, aluminum, wood, and aluminum clad-wood windows and patio doors;...

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