Koppers Holdings's three largest insider shareholders as of September 29, 2026 are M Leroy Ball (Ceo, 449.83K shares), M Leroy Ball (Ceo, 429.36K shares), M Leroy Ball (Ceo, 323.51K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | M Leroy Ball | Ceo | 1,202,690 | 0 | 1,202,690 | 61.0% | 01 Sep, 2026 |
| 2 | Albert J Neupaver | Director | 83,834 | 0 | 83,834 | 4.3% | 11 May, 2026 |
| 3 | James A. Sullivan | President And Cto | 82,898 | 0 | 82,898 | 4.2% | 12 Aug, 2026 |
| 4 | Michael Zugay | Cfo | 64,689 | 0 | 64,689 | 3.3% | 04 Jan, 2022 |
| 5 | Stephanie L Apostolou | Chief Legalsus Officer Sec. | 63,150 | 0 | 63,150 | 3.2% | 02 Mar, 2026 |
| 6 | Leslie S Hyde | Svp, Chief Sustainability Offi | 55,658 | 0 | 55,658 | 2.8% | 22 Mar, 2024 |
| 7 | Stephen R Tritch | Director | 47,754 | 0 | 47,754 | 2.4% | 06 May, 2025 |
| 8 | Louis L Testoni | Director | 45,778 | 0 | 45,778 | 2.3% | 06 May, 2025 |
| 9 | Jimmi Sue Smith | Chief Financial Officer | 41,050 | 0 | 41,050 | 2.1% | 06 Jan, 2026 |
| 10 | Bradley A Pearce | Cao | 41,037 | 0 | 41,037 | 2.1% | 11 Aug, 2026 |
| 11 | Traci L Jensen | Director | 35,339 | 0 | 35,339 | 1.8% | 11 May, 2026 |
| 12 | Daniel J Skrovanek | Vp, Growth And Innovation | 34,854 | 0 | 34,854 | 1.8% | 07 Jan, 2025 |
| 13 | Stephen G Lucas | Svp, Culture And Engagement | 34,345 | 0 | 34,345 | 1.7% | 13 Aug, 2026 |
| 14 | Xudong Feng | Director | 26,489 | 0 | 26,489 | 1.3% | 04 Jun, 2026 |
| 15 | David L Motley | Director | 22,044 | 0 | 22,044 | 1.1% | 11 May, 2026 |
| 16 | Sonja Michelle Wilkerson | Director | 20,749 | 0 | 20,749 | 1.1% | 06 May, 2024 |
| 17 | Tushar Lovalekar | Vp, Information Technology | 17,199 | 0 | 17,199 | 0.9% | 02 Mar, 2026 |
| 18 | Nishan J. Vartanian | Director | 10,664 | 0 | 10,664 | 0.5% | 11 May, 2026 |
| 19 | Joseph P Dowd | Vp, Zero Harm | 10,300 | 0 | 10,300 | 0.5% | 20 Aug, 2024 |
| 20 | Kevin Washington | Vp, External Relations | 7,951 | 0 | 7,951 | 0.4% | 16 Jun, 2025 |
| 21 | Laura J Posadas | Director | 7,771 | 0 | 7,771 | 0.4% | 11 May, 2026 |
| 22 | Eric D. Brenner | Cfo And Treasurer | 6,620 | 0 | 6,620 | 0.3% | 27 May, 2026 |
| 23 | Daniel R Groves | Vp, Culture Engagement | 5,686 | 0 | 5,686 | 0.3% | 22 Feb, 2022 |
| 24 | Andrew D Sandifer | Director | 3,949 | 0 | 3,949 | 0.2% | 06 May, 2024 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 31 Aug, 2026 | M Leroy Ball | Ceo | Disposed S | 4,000 | $45.96 | $183.84K | 429,555 | Direct |
| 31 Aug, 2026 | M Leroy Ball | Ceo | Disposed G | 200 | $0.00 | $0 | 429,355 | Direct |
| 19 Aug, 2026 | M Leroy Ball | Ceo | Disposed S | 3,000 | $45.84 | $137.52K | 433,555 | Direct |
| 12 Aug, 2026 | Stephen G Lucas | Svp, Culture And Engagement | Disposed S | 1,308 | $44.55 | $58.27K | 34,345 | Direct |
| 11 Aug, 2026 | James A. Sullivan | President And Cto | Disposed S | 7,500 | $50.00 | $375.00K | 82,898 | Direct |
| 07 Aug, 2026 | James A. Sullivan | President And Cto | Disposed S | 79,900 | $50.01 | $4.00Mn | 90,498 | Direct |
| 10 Aug, 2026 | Bradley A Pearce | Cao | Disposed S | 2,000 | $51.01 | $102.02K | 41,037 | Direct |
| 07 Aug, 2026 | James A. Sullivan | President And Cto | Disposed S | 100 | $51.22 | $5.12K | 90,398 | Direct |
| 18 Jun, 2026 | M Leroy Ball | Ceo | Disposed S | 3,412 | $43.90 | $149.79K | 436,243 | Direct |
| 15 Jun, 2026 | Sonja Michelle Wilkerson | Director | Acquired A | 30 | $0.00 | $0 | 356 | Direct |
| 15 Jun, 2026 | Andrew D Sandifer | Director | Acquired A | 14 | $0.00 | $0 | 103 | Direct |
| 15 Jun, 2026 | David L Motley | Director | Acquired A | 21 | $0.00 | $0 | 296 | Direct |
| 15 Jun, 2026 | Xudong Feng | Director | Acquired A | 34 | $0.00 | $0 | 412 | Direct |
| 11 Jun, 2026 | M Leroy Ball | Ceo | Disposed S | 4,141 | $41.34 | $171.19K | 439,955 | Direct |
| 11 Jun, 2026 | M Leroy Ball | Ceo | Disposed G | 300 | $0.00 | $0 | 439,655 | Direct |
| 03 Jun, 2026 | Xudong Feng | Director | Disposed G | 5,695 | $0.00 | $0 | 26,489 | Direct |
| 26 May, 2026 | Eric D. Brenner | Cfo And Treasurer | Acquired A | 6,620 | $0.00 | $0 | 6,620 | Direct |
| 13 May, 2026 | M Leroy Ball | Ceo | Disposed S | 2,659 | $42.55 | $113.14K | 444,096 | Direct |
| 12 May, 2026 | Bradley A Pearce | Interim Cfo And Cao | Acquired A | 5,000 | $0.00 | $0 | 43,037 | Direct |
| 07 May, 2026 | Albert J Neupaver | Director | Acquired M | 50 | $0.00 | $0 | 83,834 | Direct |