Insider selling at 0.06% of market cap is economically trivial. Directors often diversify after strong earnings runs — MACOM shares have rallied significantly on 22.5% YoY revenue growth and upward guidance. Monitor for a follow-on Form 4 filing from Chung or other top holders if the stock continues to appreciate, but this cluster alone does not warrant a bearish stance. The raised Q3 guidance ($331–339M) and 59–60% adjusted gross margin outlook remain the primary fundamental drivers.
Price Chart
Executive Summary
Director Peter Y. Chung sold 43,268 shares for $16.4M at ~$378, representing the bulk of a $17.3M insider selling cluster in the week after MACOM's strong Q2 FY2026 earnings report. The cluster includes two additional directors selling smaller lots ($587K and $304K), while one SVP's open-market sale was minimal ($106K). Total cash sales of $17.3M equal roughly 0.06% of MACOM's $27.4B market cap — trivial on a proportionality basis. A non-executive director making a large, concentrated sale post-earnings is noteworthy but not alarming given the small relative size, the stock's strong 22.5% revenue growth trajectory, and the raised guidance for Q3.
Key Financial Metrics
Key Facts
- Three directors sold shares totaling ~$17.3M in the week following Q2 FY26 earnings (May 8–15, 2026)
- Director Peter Y. Chung accounted for $16.4M of sales via a single 43,268-share open-market transaction at ~$378
- Total open-market sales represent ~0.06% of MACOM's $27.4B market cap — well below the 0.1% materiality threshold
- Q2 FY26 GAAP revenue grew 22.5% YoY to $289M; adjusted EPS of $1.09 beat the prior year's $0.85
- Q3 FY26 guidance calls for revenue of $331–339M and adjusted EPS of $1.31–$1.37, above the just-reported quarter
- SVP Hwang Donghyun Thomas's $106K open-market sale is part of a routine pattern (small lot, preceded by a grant/vesting event earlier the same week)
- Director gifts (700 shares total to Bland Charles) are non-cash and carry no directional signal
- Per score calibration, score-6 insider cluster reports on MTSI have a 30% up-move rate at T+20 historically, suggesting low predictive power for directional moves
Financial Impact
$17.3M in director open-market sales (0.06% of market cap); non-material relative to $27.4B enterprise value
Risk Factors
- Director Chung's large single-day sale could preface additional distributions if he holds a concentrated block of MTSI shares
- Sustained insider selling above 0.5% of market cap across multiple quarters would be a more meaningful signal
- Semiconductor cyclicality — any demand pullback in data center or telecom end markets would weigh more on the stock than this insider cluster
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MTSI-1779310367167 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 6, 2026 8w ago | 8-K | $301.64 $259.95 | ▼ −13.82% | ▼ −14.42% | $326.45 (+8.23%) |
Jun 9, 2026 16w ago | Press Release | $358.72 $304.82 | ▼ −15.03% | ▼ −16.47% | $326.45 (−9.00%) |
May 29, 2026 17w ago | 144 | $353.79 $380.37 | ▲ +7.51% | ▲ +8.81% | $326.45 (−7.73%) |
May 27, 2026 18w ago | 144 | $400.66 $390.19 | ▼ −2.61% | ▼ −0.71% | $326.45 (−18.52%) |
May 18, 2026 19w ago | Insider Cluster | $358.98 $367.11 | ▲ +2.26% | ▲ +1.28% | $326.45 (−9.06%) |
May 18, 2026 19w ago | Insider Cluster | $358.98 $367.11 | ▲ +2.26% | ▲ +1.28% | $326.45 (−9.06%) |
May 18, 2026 19w ago | Insider Cluster | $358.98 $367.11 | ▲ +2.26% | ▲ +1.28% | $326.45 (−9.06%) |
May 18, 2026 19w ago | Insider Cluster | $380.45 $395.70 | ▲ +4.01% | ▲ +3.68% | $326.45 (−14.19%) |
May 18, 2026 19w ago | Insider Cluster | $358.98 $367.11 | ▲ +2.26% | ▲ +1.28% | $326.45 (−9.06%) |
May 15, 2026 19w ago | Insider Cluster | $356.25 $368.32 | ▲ +3.39% | ▲ +1.81% | $326.45 (−8.36%) |
US Market Status
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