Insider Cluster (2 insiders) ·Filed Oct 28, 2026
Insider cluster: 2 insiders, $383K total
Actionable Insight • Neutral
All sales are 10b5-1 plan transactions, which are pre-scheduled and non-discretionary. No bearish signal from this cluster. Monitor upcoming earnings or news for any fundamental changes.
Latest settled: T+1d ⚠ clustered
CSTL ▼ -3.51% at T+1d
NEUTRAL call -3.51% · α vs SPY -1.73% · entry $38.51 → $37.16
T+1d
-3.51%
call -3.51% · α -1.73%
$37.16
settled yesterday
T+5d
Pending
in 4d
T+20d
Pending
in 25d
T+60d
Pending
in 3mo
Price Chart
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Executive Summary
Two CSTL insiders, including the CEO, sold shares totaling $383K in open-market sales, both under 10b5-1 trading plans. The sales are modest relative to the company's $1.0B market cap (0.04%) and are routine plan-driven transactions, not indicative of negative sentiment.
Key Financial Metrics
Direction
selling
Total Value
$383.0K
Insiders
2
Key Facts
- CEO Derek Maetzold sold 8.6K shares at $31.91 for $274K on 2026-10-19 under a 10b5-1 plan.
- CCO Tobin Juvenal sold 3.3K shares at $33.08 for $109K on 2026-10-26 under a 10b5-1 plan.
- Total cluster value is $383K, representing 0.04% of CSTL's $1.0B market cap.
- Both sales are marked as 10b5-1 plan transactions, indicating pre-arranged trading schedules.
Financial Impact
Total insider sales of $383K, less than 0.1% of market cap.
dilution
Risk Factors
- Insider sales are modest and pre-planned; no material risk indicated.
Market Snapshot
Exchange
Nasdaq
Sector
Services-Medical Laboratories
Analyst Consensus
93% bullish (15 analysts)
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-CSTL-1793218157451 |
33 reports for CSTL
60% Hit rate @ T+1 Went positive at some point 9 of 10 best @ T+60▲ +27.32%
Filters
Rows
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 29, 2026 1d ago | SC 13G/A | $38.51 $37.16 | ▼ −3.51% | ▼ −1.73% | $37.16 (−3.51%) |
Oct 28, 2026 2d ago | Insider Cluster | $38.51 $37.16 | ▼ −3.51% | ▼ −1.73% | $37.16 (−3.51%) |
Oct 21, 2026 9d ago | Insider Cluster | $33.19 $33.08 | ▼ −0.33% | ▲ +0.19% | $37.16 (+11.96%) |
Oct 5, 2026 25d ago | 144 | $33.36 $33.00 | ▼ −1.08% | ▼ −0.84% | $37.16 (+11.39%) |
Oct 5, 2026 25d ago | Insider Cluster | $33.36 $33.00 | ▼ −1.08% | ▼ −0.84% | $37.16 (+11.39%) |
Sep 23, 2026 5w ago | Insider Cluster | $35.19 $35.81 | ▼ −1.76% | ▼ −1.22% | $37.16 (−5.60%) |
Sep 16, 2026 6w ago | Insider Cluster | $36.78 $35.34 | ▼ −3.92% | ▼ −4.04% | $37.16 (+1.03%) |
Sep 11, 2026 7w ago | 144 | $33.44 $35.50 | ▲ +6.16% | ▲ +6.62% | $37.16 (+11.12%) |
Sep 3, 2026 8w ago | Insider Cluster | $32.91 $32.76 | ▲ +0.46% | ▼ −0.09% | $37.16 (−12.91%) |
Sep 2, 2026 8w ago | Insider Cluster | $32.65 $32.91 | ▲ +0.80% | ▲ +1.18% | $37.16 (+13.81%) |
Showing 10 of 33
US Market Status
Market Closed · Opens Mon (35h 14m)
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