| Date | Action | Shares | Price | Value | Owned After |
|---|---|---|---|---|---|
| Jan 5, 2026 | Option exercise(M) | 12K | — | — | 172K |
| Jan 5, 2026 | Tax withholding(F) | 14K | $26.93 | $368K | 159K |
| Jan 5, 2026 | Option exercise(M) | 622 | — | $0 | 173K |
| Jan 5, 2026 | Grant(A) | 22K | — | $0 | 160K |
| Date | Action | Shares | Price | Value | Owned After |
|---|---|---|---|---|---|
| Jan 5, 2026 | Option exercise(M) | 622 | — | $0 | 294 |
| Jan 5, 2026 | Option exercise(M) | 12K | — | $0 | 0 |
| Jan 2, 2026 | Grant(A) | 107 | — | $0 | 916 |
| Jan 2, 2026 | Grant(A) | 3K | — | $0 | 3K |
| Jan 2, 2026 | Grant(A) | 3K | — | $0 | 12K |
Parsed from a single SEC EDGAR Form 4 filing (accession 0001450800-26-000002) within minutes of acceptance. Every field above traces to the original document. Verify it directly:
Connected pages for Koppers Holdings Inc.
This filing is the Follow view. The Build view lets your agent pull every Form 4 for the issuer, the net open-market picture over 90 days, and the accession behind each row, through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/filing/0001450800-26-000002"
Use Arkolith to summarize insider buying and selling at Koppers Holdings Inc. over the last 90 days and cite the filings.