Koppers Holdings Inc. (KOP) ownership: Top institutional holder: BlackRock, Inc. ($117.78M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 3045112.00 | $117.78M | 2026-03-31 |
| BlackRock Fund Advisors | 1663098.00 | $67.02M | 2016-12-31 |
| PZENA INVESTMENT MANAGEMENT LLC | 1209376.00 | $46.78M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 1191358.00 | $46.08M | 2026-03-31 |
| VANGUARD GROUP INC | 1540012.00 | $41.70M | 2025-12-31 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 978590.00 | $37.85M | 2026-03-31 |
| Simcoe Capital Management, LLC | 944430.00 | $36.53M | 2026-03-31 |
| LSV ASSET MANAGEMENT | 926031.00 | $35.82M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-11 | |
| Sell | null | 2026-06-11 | |
| Sell | null | 2026-06-03 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-13 | |
| Sell | null | 2026-05-13 | |
| Sell | null | 2026-05-12 |
Back to KOP overview · KOP earnings · All congressional trades
Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.