Summary
Updated Aug 31, 2026
MANCHESTER MANAGEMENT CO LLC files SEC Form 4 reports at SANUWAVE Health, Inc. (SNVW). 6 SEC Form 4 filings on record going back to 2024, most recently on 11 December 2025. Most recent open-market trade: sold $63K of SNVW on 11 December 2025. Lifetime open-market purchases: $1.95M. Lifetime open-market sales: $4.45M. Historical track record: 1/5 stars across 4 tracked purchases.
Recent Transactions
20Every recent SEC Form 4 transaction MANCHESTER MANAGEMENT CO LLC has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| 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 | -3.90% |
| Avg 30-day return | -21.31% |
| Avg 90-day return | -46.14% |
| Best 30-day return | -12.80% |
Trading Pattern
InsiderAlpha's records for MANCHESTER MANAGEMENT CO LLC go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $489K (4 buys totaling $1.95M). The largest single buy on record is $1.50M of SNVW in 2024. Sales side: 4 recorded sales totaling $4.45M, so the filing history runs sell-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies MANCHESTER MANAGEMENT CO LLC files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Opaleye Management Inc. - $950K of SNVW open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is MANCHESTER MANAGEMENT CO LLC?
MANCHESTER MANAGEMENT CO LLC is an investment firm of SANUWAVE Health, Inc. (SNVW). InsiderAlpha holds 6 primary Form 4 filings for it, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did MANCHESTER MANAGEMENT CO LLC last file a Form 4?
The most recent primary Form 4 on record is dated 11 December 2025, one of 6 filings going back to 2024.
Has MANCHESTER MANAGEMENT CO LLC been buying or selling stock?
Recorded transactions: 4 open-market purchases ($1.95M) and 4 open-market sales ($4.45M) across all tracked filings.
How accurate is MANCHESTER MANAGEMENT CO LLC's historical track record?
Across 4 tracked purchases, MANCHESTER MANAGEMENT CO LLC averaged -21.3% avg 30-day return with a 0% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
Where can I see all of MANCHESTER MANAGEMENT CO LLC's SEC filings?
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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