Two non-plan open-market sales by a director and an operating SVP in a tight window suggest possible concern about near-term valuation or business conditions. Monitor upcoming quarterly results for any guidance revision or demand commentary in the photomask segment.
Price Chart
Executive Summary
Two PLAB insiders — a director and an SVP — sold a combined $510K in open-market transactions over two days, with the SVP's sale occurring at $30.37, near the stock's recent range. The total value is ~0.16% of market cap, a modest but notable cluster. No 10b5-1 plan indication is present, and the sales are not routine vesting or tax-withholding events, lending them modest informational weight.
Key Financial Metrics
Key Facts
- Director Lee Kang Jyh sold 7,500 shares at $29.50 for $221K on 2026-09-24
- SVP Park Han Kyung sold 9,500 shares at $30.37 for $289K on 2026-09-25
- Total cluster value: $510K, approximately 0.16% of market cap
- Both transactions are open-market sales (code S) with no 10b5-1 plan indication
- No insider purchases in the cluster window
Financial Impact
Insider sales of $510K represent ~0.16% of market cap — modest but above the trivial threshold
Risk Factors
- Insider sales may signal management's view that shares are fairly valued or that headwinds are emerging
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-PLAB-1790731436698 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 1, 2026 26d ago | Insider Cluster | $31.49 | awaiting T+60 | — | $28.82 (+8.48%) |
Oct 1, 2026 26d ago | Insider Cluster | $31.49 | awaiting T+60 | — | $28.82 (+8.48%) |
Sep 29, 2026 28d ago | Insider Cluster | $30.78 | awaiting T+60 | — | $28.82 (+6.37%) |
Aug 26, 2026 8w ago | 8-K | $30.25 | awaiting T+60 | — | $28.82 (−4.73%) |
Aug 12, 2026 10w ago | Press Release | $33.48 | awaiting T+60 | — | $28.82 (−13.92%) |
May 28, 2026 21w ago | 8-K | $34.02 $30.51 | ▲ +10.32% | ▲ +12.05% | $28.82 (+15.29%) |
May 14, 2026 23w ago | Press Release | $50.02 $32.99 | ▼ −34.05% | ▼ −38.56% | $28.82 (−42.38%) |
May 13, 2026 23w ago | Press Release | $51.86 $32.65 | ▼ −37.04% | ▼ −41.48% | $28.82 (−44.43%) |
Apr 17, 2026 27w ago | 144 | $48.38 $29.47 | ▼ −39.09% | ▼ −45.23% | $28.82 (−40.43%) |
Apr 13, 2026 28w ago | Insider Cluster | $45.71 $29.90 | ▲ +34.59% | ▲ +43.30% | $28.82 (+36.95%) |
US Market Status
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