Updated Jul 16, 2026
MANCHESTER MANAGEMENT CO LLC is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $1.95M. Lifetime open-market sales: $4.45M. Historical track record: 1/5 stars across 4 tracked purchases.
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★☆☆☆☆ (1/5) |
|---|---|
| Total purchases tracked | 4 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 0% |
| 90-day win rate | 0% |
| Avg 5-day return | -390.37% |
| Avg 30-day return | -2130.93% |
| Avg 90-day return | -4614.30% |
| Best 30-day return | -1280.49% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-12-11 | SNVW | SANUWAVE Health, Inc. | S — Open-market sale | 2.0K | $31.60 | $63K |
| 2025-12-11 | SNVW | SANUWAVE Health, Inc. | S — Open-market sale | 8.6K | $30.39 | $262K |
| 2025-12-11 | SNVW | SANUWAVE Health, Inc. | S — Open-market sale | 8.8K | $30.58 | $269K |
| 2025-12-11 | SNVW | SANUWAVE Health, Inc. | S — Open-market sale | 125.4K | $30.75 | $3.86M |
| 2024-12-04 | MODD | Modular Medical, Inc. | P — Open-market purchase | 21.0K | $1.68 | $35K |
| 2024-11-29 | MODD | Modular Medical, Inc. | P — Open-market purchase | 100.0K | $1.69 | $169K |
| 2024-11-25 | MODD | Modular Medical, Inc. | P — Open-market purchase | 166.7K | $1.50 | $250K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 14.2K | $25.13 | $356K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 15.0K | $15.00 | $225K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 22.7K | $25.13 | $570K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 24.0K | $15.00 | $360K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | P — Open-market purchase | 181.8K | $8.25 | $1.50M |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 6.4K | $25.13 | $160K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 42.5K | $25.13 | $1.07M |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 6.8K | $15.00 | $101K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 45.0K | $15.00 | $675K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 8.6K | $15.00 | $129K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 57.5K | $15.00 | $862K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 5.7K | $25.13 | $142K |
| 2024-10-23 | SNVW | SANUWAVE Health, Inc. | J — Other acquisition / disposition | 6.0K | $15.00 | $90K |
MANCHESTER MANAGEMENT CO LLC is a corporate insider — currently tracked as Insider. InsiderAlpha tracks every SEC Form 4 filing in real time.
Recorded transactions: 4 open-market purchases ($1.95M) and 4 open-market sales ($4.45M) across all tracked filings.
Across 4 tracked purchases, MANCHESTER MANAGEMENT CO LLC averaged -2130.9% avg 30-day return with a 0% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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