The insider sales are immaterial in size and involve only directors, not C-suite executives. No actionable signal for traders. Monitor for any future open-market purchases by the CEO or CFO, which would carry more informational content. The upcoming quarterly earnings release is the next likely catalyst.
Price Chart
Executive Summary
Two Materion directors sold a combined $706K in stock over a 3-day window, with no open-market purchases from any C-suite executive. The sales represent ~0.013% of the $5.3B market cap, falling well below the 0.1% materiality threshold. All other insider activity in the cluster consists of non-cash stock grants (9 transactions on 2026-09-04) with zero economic value. The sales are routine in magnitude and do not signal a bearish insider view, especially given the lack of C-suite participation and the small dollar amounts relative to company size.
Key Financial Metrics
Key Facts
- Two directors sold a combined $706K in MTRN stock (0.013% of market cap)
- No C-suite executives (CEO, CFO, etc.) sold or bought shares in the open market
- All 9 other insider transactions were non-cash stock grants/awards totaling $0
- Sales occurred on 2026-08-31 and 2026-09-01, within a 3-day window
- Total insider sales are trivial relative to the $5.3B market cap
Financial Impact
Two director sales totaling $706K, representing ~0.013% of MTRN's $5.3B market cap
Risk Factors
- Director sales could be misinterpreted as bearish by retail traders
- No C-suite buying to offset the sales, but this is typical for a company with no material insider trading activity
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MTRN-1788987685122 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 12, 2026 14d ago | Institutional Cluster | $270.15 $243.48 | ▼ −9.87% | ▼ −8.38% | $226.55 (−16.14%) |
Sep 3, 2026 7w ago | Insider Cluster | $240.56 $257.51 | ▲ +7.05% | ▲ +8.19% | $226.55 (−5.82%) |
Sep 3, 2026 7w ago | Insider Cluster | $240.56 $257.51 | ▲ +7.05% | ▲ +8.19% | $226.55 (−5.82%) |
Sep 1, 2026 7w ago | 144 | $234.19 $253.07 | ▲ +8.06% | ▲ +7.98% | $226.55 (−3.26%) |
Aug 11, 2026 10w ago | Insider Cluster | $283.26 $245.22 | ▼ −13.43% | ▼ −12.99% | $226.55 (−20.02%) |
Aug 11, 2026 10w ago | Insider Cluster | $283.26 $245.22 | ▼ −13.43% | ▼ −12.99% | $226.55 (−20.02%) |
Aug 5, 2026 11w ago | 8-K | $297.08 $283.26 | ▼ −4.65% | ▼ −5.00% | $226.55 (−23.74%) |
Jun 14, 2026 19w ago | Institutional Cluster | $252.14 $277.68 | ▲ +10.13% | ▲ +11.51% | $226.55 (−10.15%) |
May 15, 2026 23w ago | Insider Cluster | $205.02 $215.04 | ▲ +4.89% | ▲ +3.92% | $226.55 (+10.50%) |
Apr 29, 2026 25w ago | 8-K | $172.43 $196.73 | ▲ +14.10% | ▲ +10.99% | $226.55 (+31.39%) |
US Market Status
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