Koppers Holdings Inc
Ownership
Ownership Structure
Who owns Koppers Holdings Inc (KOP)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 87.1% of the shares are freely tradable; institutional investors hold 104.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 16.10 | 3,045,112 | -17.8 | 03/31/2026 |
| Simcoe Capital Management, LLC | 7.49 | 1,416,160 | +49.9 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 6.54 | 1,237,249 | +3.9 | 06/30/2026 |
| Pzena Investment Management, LLC | 6.39 | 1,209,376 | +0.4 | 03/31/2026 |
| Fuller & Thaler Asset Management Inc | 5.17 | 978,590 | -51.7 | 03/31/2026 |
| LSV Asset Management | 4.98 | 941,881 | +1.7 | 06/30/2026 |
| American Century Companies Inc | 4.48 | 848,068 | +58.5 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.44 | 840,446 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.21 | 1,174,796 | +0.0 | 08/31/2026 |
| Avantis US Small Cap Value ETF | 4.37 | 826,979 | +0.0 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Ball M Leroy | CEO | 429,355 | 19,449,800 $ | Aug 31, 2026 | direct |
| Sullivan James A. | President and CTO | 82,898 | 3,755,268 $ | Aug 11, 2026 | direct |
| Pearce Bradley A | CAO | 41,037 | 1,858,976 $ | Aug 10, 2026 | direct |
| Lucas Stephen G | SVP, Culture and Engagement | 34,345 | 1,555,829 $ | Aug 12, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 31, 2026 | Ball M Leroy | CEO | Other | 200 | 0.00 | – |
| Aug 31, 2026 | Ball M Leroy | CEO | Sell | 4,000 | 45.96 | 183,840 |
| Aug 19, 2026 | Ball M Leroy | CEO | Sell | 3,000 | 45.84 | 137,520 |
| Aug 12, 2026 | Lucas Stephen G | SVP, Culture and Engagement | Sell | 1,308 | 44.55 | 58,271 |
| Aug 11, 2026 | Sullivan James A. | President and CTO | Sell | 7,500 | 50.00 | 375,000 |
| Aug 10, 2026 | Pearce Bradley A | CAO | Sell | 2,000 | 51.01 | 102,020 |
| Aug 7, 2026 | Sullivan James A. | President and CTO | Sell | 100 | 51.22 | 5,122 |
| Aug 7, 2026 | Sullivan James A. | President and CTO | Sell | 79,900 | 50.01 | 3,995,799 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.