Insider Cluster (2 insiders) ·Filed May 15, 2026
Insider cluster: 2 insiders, $981K total
Actionable Insight • Neutral
The insider sales are too small to warrant a trading signal. Continue to monitor for any larger sales or changes in insider sentiment. The strong earnings trajectory remains the primary focus.
Final — all horizons settled through T+60d ⚠ clustered
INSM ▲ +23.45% at T+60d
NEUTRAL call ✓ call won +23.45% · α vs SPY +18.60% · entry $107.15 → $132.28
T+1d
+0.24%
call +0.24% · α +0.89%
$107.41
settled 5mo ago
T+5d
+1.61%
call +1.61% · α -0.01%
$108.87
settled 4mo ago
T+20d
-10.85%
call -10.85% · α -12.44%
$95.52
settled 4mo ago
T+60d
+23.45%
call +23.45% · α +18.60%
$132.28
settled 7w ago
Price Chart
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Executive Summary
Two C-suite insiders (CMO and CLO) sold a total of ~$981K worth of INSM shares, representing a trivial 0.004% of the $25.1B market cap. The sales follow a strong Q1 earnings beat (revenue +230% YoY) and likely reflect routine portfolio rebalancing rather than a bearish signal.
Key Financial Metrics
Direction
selling
Total Value
$981.0K
Insiders
2
Key Facts
- CMO Flammer sold 4,470 shares at $112.76 ($504K) on May 13, 2026
- CLO Smith sold 4,109 shares at $116.18 ($477K) on May 13, 2026
- Total sale value ~$981K, <0.004% of market cap
- No insider open-market purchases in the cluster
- Cluster coincides with positive Q1 2026 earnings reported May 7 (revenue $306M, +230% YoY, EPS beat)
Financial Impact
Sales amount to ~$981K, negligible relative to $25.1B market cap
insider holdingsfloat
Risk Factors
- Insider sales may increase if stock continues to appreciate
- No material risk from this cluster
Market Snapshot
Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
96% bullish (28 analysts)
Investment Themes
Biotech & Drug Discovery
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-INSM-1778875977822 |
18 reports for INSM
86% Hit rate best @ T+60▲ +31.86%
Filters
Rows
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 19, 2026 6w ago | Insider Cluster | $130.66 $119.92 | ▼ −8.22% | ▼ −6.70% | $111.34 (−14.79%) |
Aug 12, 2026 7w ago | Insider Cluster | $126.33 $129.41 | ▲ +2.44% | ▲ +4.19% | $111.34 (−11.87%) |
Aug 6, 2026 8w ago | 8-K | $132.55 $126.68 | ▼ −4.43% | ▼ −5.03% | $111.34 (−16.00%) |
Jul 24, 2026 10w ago | Institutional Cluster | $106.92 $125.77 | ▲ +17.63% | ▲ +14.00% | $111.34 (+4.13%) |
Jul 21, 2026 10w ago | ANALYST-UPGRADE | $108.62 $128.46 | ▲ +18.27% | ▲ +15.70% | $111.34 (+2.50%) |
Jul 16, 2026 11w ago | 8-K | $107.46 $126.33 | ▲ +17.56% | ▲ +13.94% | $111.34 (+3.61%) |
Jun 26, 2026 13w ago | Insider Cluster | $104.74 $106.92 | ▲ +2.08% | ▲ +2.36% | $111.34 (+6.30%) |
Jun 5, 2026 16w ago | Insider Cluster | $94.17 $111.54 | ▲ +18.45% | ▲ +16.81% | $111.34 (+18.23%) |
Jun 5, 2026 16w ago | Insider Cluster | $94.17 $111.54 | ▲ +18.45% | ▲ +16.81% | $111.34 (+18.23%) |
May 15, 2026 19w ago | S-3ASR | $107.15 $95.52 | ▼ −10.85% | ▼ −12.44% | $111.34 (+3.91%) |
Showing 10 of 18
US Market Status
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