The CTO's $4M sale at ~$50 is large in absolute terms but represents only ~0.5% of market cap — below the 0.5-2% threshold for significance. Given the company's strong analyst support and the cluster's small proportional size, this is likely routine portfolio diversification. Monitor for any subsequent 8-K filings or earnings pre-announcements that could explain the timing, but no immediate trading action is warranted.
Price Chart
Executive Summary
Two Koppers insiders — the President/CTO and CAO — sold a combined $477K in open-market sales over a 7-day window. The President/CTO alone sold 87,500 shares for $4.4M, including a single $4M block at $50.01.
Key Financial Metrics
Key Facts
- President/CTO James A. Sullivan sold 87,500 shares total ($4.4M) in two open-market transactions on Aug 7 and Aug 11
- CAO Bradley A. Pearce sold 2,000 shares ($102K) on Aug 10
- Total cluster value of $477K represents ~0.05% of KOP's $870M market cap
- All sales were open-market (code S) — no 10b5-1 plan indicated
- Analyst consensus is 86% bullish (6 Buy, 1 Hold)
- Institutional 13F shows top holders BlackRock ($137M) and Dimensional ($56M) with recent trimming activity
Financial Impact
$477K in insider sales, ~0.05% of market cap — immaterial relative to company size
Risk Factors
- C-suite selling at a concentrated price band could signal insider caution ahead of Q3 earnings
- Institutional trimming (4 trims, 1 near_exit in 13F) adds to the cautious picture
- No 10b5-1 plan disclosed — sales are discretionary, increasing informational risk
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-KOP-1786575820119 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 23, 2026 4d ago | Press Release | $40.18 | awaiting T+5 | — | $41.44 (+3.14%) |
Oct 22, 2026 4d ago | SC 13D/A | $40.18 | awaiting T+5 | — | $41.44 (−3.14%) |
Oct 19, 2026 8d ago | SC 13G/A | $42.91 $39.83 | ▲ +7.18% | ▲ +7.03% | $41.44 (+3.43%) |
Oct 8, 2026 19d ago | SC 13G/A | $44.24 $43.44 | ▼ −1.81% | ▼ −1.53% | $41.44 (−6.33%) |
Aug 20, 2026 9w ago | Insider Cluster | $45.19 $46.56 | ▲ +3.03% | ▲ +2.56% | $41.44 (−8.30%) |
Aug 13, 2026 10w ago | Insider Cluster | $47.14 $45.19 | ▼ −4.14% | ▼ −2.77% | $41.44 (−12.09%) |
Aug 12, 2026 10w ago | Insider Cluster | $46.22 $45.88 | ▼ −0.74% | ▲ +1.23% | $41.44 (−10.34%) |
Aug 11, 2026 11w ago | Insider Cluster | $45.34 $44.90 | ▲ +0.97% | ▲ +0.53% | $41.44 (+8.60%) |
May 11, 2026 24w ago | 8-K | $43.08 $40.39 | ▼ −6.24% | ▼ −6.16% | $41.44 (−3.81%) |
May 8, 2026 24w ago | 8-K | $43.99 $42.41 | ▲ +3.59% | ▲ +5.06% | $41.44 (+5.80%) |
US Market Status
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