NYSE:KOP

Koppers Holdings Stock Insider Trading

Basic Materials > Chemicals - Specialty

Buy KOP

*Your capital is at risk

$43.09

+0.610 (+1.44%)

At Close: Jun 03, 2026

Koppers Holdings Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 16.21. In total, the insiders bought 455.82M and sold 138.31K KOP 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)	16.21
● Buy	455.82M shares
● Sell	138.31K shares
83% Buy Activity Moderate Negative Correlation
Sell Signal Low Confidence Mar 02, 2026 Analysis Breakdown: Weakened by a contradictory positive Insider Power Score. 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
May 26, 2026 Buy	Common Stock	Brenner Eric D. CFO And Treasurer	C-Suite Officer	0 Value: $0
May 26, 2026 Buy	Common Stock A-Award	Brenner Eric D. CFO And Treasurer	C-Suite Officer	6 620 Value: $275.0K
May 13, 2026 Sell	Common Stock S-Sale	Ball M Leroy CEO	CEO / President	2 659 Value: $113.1K
May 12, 2026 Buy	Common Stock A-Award	Pearce Bradley A Interim CFO And Cao	C-Suite Officer	5 000 Value: $217.8K
May 07, 2026 Buy	Common Stock M-Exempt	Neupaver Albert J Director	Director	50 Value: $2K
May 07, 2026 Buy	Dividend Equivalent Rights M-Exempt	Neupaver Albert J Director	Director	50 Value: $2K
May 07, 2026 Buy	Common Stock A-Award	Vartanian Nishan J. Director	Director	3 280 Value: $135.0K
May 07, 2026 Buy	Common Stock M-Exempt	Vartanian Nishan J. Director	Director	50 Value: $2K
May 07, 2026 Buy	Dividend Equivalent Rights M-Exempt	Vartanian Nishan J. Director	Director	50 Value: $2K
May 07, 2026 Buy	Common Stock A-Award	Posadas Laura J Director	Director	3 280 Value: $135.0K
May 07, 2026 Buy	Dividend Equivalent Rights M-Exempt	Posadas Laura J Director	Director	11 Value: $453
May 07, 2026 Buy	Common Stock M-Exempt	Motley David L Director	Director	50 Value: $2K
May 07, 2026 Buy	Common Stock A-Award	Feng Xudong Director	Director	3 280 Value: $135.0K
May 07, 2026 Buy	Common Stock M-Exempt	Posadas Laura J Director	Director	11 Value: $453
May 07, 2026 Buy	Restricted Stock Units A-Award	Sandifer Andrew D Director	Director	3 280 Value: $135.0K
May 07, 2026 Buy	Restricted Stock Units A-Award	Wilkerson Sonja Michelle Director	Director	3 280 Value: $135.0K
May 07, 2026 Buy	Dividend Equivalent Rights M-Exempt	Motley David L Director	Director	50 Value: $2K
May 07, 2026 Buy	Restricted Stock Units A-Award	Motley David L Director	Director	3 280 Value: $135.0K
May 07, 2026 Buy	Dividend Equivalent Rights M-Exempt	Jensen Traci L Director	Director	50 Value: $2K
May 07, 2026 Buy	Common Stock M-Exempt	Jensen Traci L Director	Director	50 Value: $2K
May 07, 2026 Buy	Common Stock A-Award	Jensen Traci L Director	Director	3 280 Value: $135.0K
Mar 23, 2026 Buy	Dividend Equivalent Rights A-Award	Wilkerson Sonja Michelle Director	Director	50 Value: $2K
Mar 23, 2026 Buy	Dividend Equivalent Rights A-Award	Posadas Laura J Director	Director	11 Value: $397
Mar 23, 2026 Buy	Dividend Equivalent Rights A-Award	Motley David L Director	Director	50 Value: $2K
Mar 23, 2026 Buy	Dividend Equivalent Rights A-Award	Feng Xudong Director	Director	30 Value: $1K

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 KOPPERS HOLDINGS INC

Koppers Holdings Inc. provides treated wood products, wood preservation chemicals, and carbon compounds in the United States, Australasia, Europe, and internationally. The company operates through three segments: Railroad and Utility Products and Services (RUPS), Performance Chemicals (PC), and Carbon Materials and Chemicals (CMC). The RUPS segment procures and treats crossties, switch ties, and various types of lumber used for railroad bridges a...

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