Company profile
Koppers Holdings Inc. Insider Trading
KOPEvery SEC Form 4 insider trading filing for Koppers Holdings Inc. (KOP) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- NYSE
- Sector
- Lumber & Wood Products (No Furniture)
- CIK
- 0001315257
- Filings
- 235
- Insiders
- 22
- Last filing
- 2026-08-19
Activity summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $4.7M across 6 transactions.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Koppers Holdings Inc. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $9.9M.
90 day insight
Over the last 90 days, Koppers Holdings Inc. insiders bought $0 (4 transactions) and sold $5.0M (8 transactions).
- Most active insider: Ball M Leroy with 4 transactions totaling $458K.
- Largest single sale: $4.0M by Sullivan James A. on Aug 7, 2026.
Activity skews bearish — sales outpace buys.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 19, 2026 | Ball M Leroy | KOP | Sale | 3,000 | $45.84 | $138K |
| Aug 12, 2026 | Lucas Stephen G | KOP | Sale | 1,308 | $44.55 | $58K |
| Aug 11, 2026 | Sullivan James A. | KOP | Sale | 7,500 | $50.00 | $375K |
| Aug 10, 2026 | Pearce Bradley A | KOP | Sale | 2,000 | $51.01 | $102K |
| Aug 7, 2026 | Sullivan James A. | KOP | Sale | 79,900 | $50.01 | $4.00M |
45 more transactions hidden
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Query this yourself
The same rows, over the API.
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Koppers Holdings Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →