The cluster of director and CLO sales at $43.60-$45.50 with no insider purchases suggests a lack of conviction at current levels. Monitor for upcoming clinical data readouts or financing events that may have prompted the selling. The OrbiMed director sale of $5.27M is the largest and most notable — OrbiMed is a significant healthcare investor, and a director-level sale of this size may signal a view on near-term valuation ceiling.
Price Chart
Executive Summary
Three Sionna insiders sold a combined $9.57M in open-market sales over a 7-day window, including a director ($5.27M) and the Chief Legal Officer ($447K). The total sales represent ~0.48% of the $2.0B market cap, a modest but notable cluster. No insider purchases occurred, and the selling is concentrated among directors and a C-suite officer, with no 10b5-1 pattern evident. This cluster signals potential insider caution ahead of upcoming catalysts or data readouts.
Key Financial Metrics
Key Facts
- Three insiders sold a total of ~$9.57M in open-market sales over a 7-day window (June 30 – July 7, 2026).
- OrbiMed Advisors LLC (Director) sold 115.8K shares at $45.50 for $5.27M on June 30.
- Director Peter A. Thompson sold 85.9K shares at $44.86 for $3.85M on July 7.
- Chief Legal Officer Jennifer Fitzpatrick sold 10.3K shares at $43.60 for $447K on July 6, after exercising options.
- Total open-market sales of ~$9.57M represent ~0.48% of SION's $2.0B market cap — a modest but notable cluster.
- No insider purchases were made during the window.
- The cluster includes two directors and one C-suite officer, with no 10b5-1 pattern evident.
Financial Impact
Total insider sales of ~$9.57M represent ~0.48% of SION's $2.0B market cap — modest but notable for a pre-commercial biotech.
Risk Factors
- Insider selling cluster with no purchases suggests limited confidence at current valuation.
- OrbiMed director sale of $5.27M is the largest single trade and may signal a view on near-term ceiling.
- No 10b5-1 pattern evident — sales appear discretionary.
- Pre-commercial biotech with no approved products — valuation dependent on pipeline milestones.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-SION-1783630882064 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 10, 2026 7w ago | 8-K | $4.50 $7.30 | ▼ −62.22% | ▼ −63.14% | $5.04 (−12.00%) |
Aug 6, 2026 8w ago | 8-K | $49.61 $6.75 | ▼ −86.39% | ▼ −86.99% | $5.04 (−89.84%) |
Jul 9, 2026 12w ago | Insider Cluster | $45.29 $51.04 | ▲ +12.70% | ▲ +10.27% | $5.04 (−88.87%) |
Jul 9, 2026 12w ago | Insider Cluster | $45.29 $51.04 | ▼ −12.70% | ▼ −10.27% | $5.04 (+88.87%) |
Jul 7, 2026 12w ago | Insider Cluster | $44.00 $47.34 | ▼ −7.59% | ▼ −4.32% | $5.04 (+88.55%) |
Jul 2, 2026 13w ago | Insider Cluster | $43.99 $46.78 | ▲ +6.34% | ▲ +6.76% | $5.04 (−88.54%) |
Jun 11, 2026 16w ago | Institutional Cluster | $36.05 $44.94 | ▲ +24.66% | ▲ +22.77% | $5.04 (−86.02%) |
May 30, 2026 17w ago | Insider Cluster | $40.90 $43.99 | ▲ +7.55% | ▲ +8.85% | $5.04 (−87.68%) |
May 29, 2026 17w ago | 144 | $40.90 $43.99 | ▼ −7.55% | ▼ −8.85% | $5.04 (+87.68%) |
May 12, 2026 20w ago | 8-K | $40.94 $34.03 | ▼ −16.88% | ▼ −15.15% | $5.04 (−87.69%) |
US Market Status
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