M. Leroy Ball, CEO at Koppers Holdings Inc. (KOP), sold 3,000 shares at $45.84 ($138K) on 2026-08-19, disclosed to the SEC on 2026-08-20.
Seasonal sale ($138k) by CEO — this insider has traded KOP in August in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| KOP | SELL | 2026-06-15 | $171K | — | Filing → |
| KOP | SELL | 2026-05-14 | $113K | — | Filing → |
| KOP | SELL | 2026-03-18 | $94K | — | Filing → |