Summary
Updated Aug 30, 2026
Madryn Asset Management, LP files SEC Form 4 reports at Neuronetics, Inc. (STIM). 6 SEC Form 4 filings on record going back to 2025, most recently on 17 June 2026. Most recent open-market trade: bought $1.50M of VERO on 31 March 2026. Lifetime open-market purchases: $1.50M. Lifetime open-market sales: $13.02M.
Recent Transactions
13Every recent SEC Form 4 transaction Madryn Asset Management, LP has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Madryn Asset Management, LP go back to 2025: 6 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $167K (9 buys totaling $1.50M). The largest single buy on record is $1.50M of VERO in 2026. Sales side: 3 recorded sales totaling $13.02M, 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 Madryn Asset Management, LP 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.
- Jorey Chernett - $4.33M of STIM open-market activity in the last 12 months
- Keith J. Sullivan - $193K of STIM open-market activity in the last 12 months
- William Andrew Macan - $56K of STIM open-market activity in the last 12 months
- Steven Pfanstiel - $34K of STIM 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 Madryn Asset Management, LP?
Madryn Asset Management, LP is an investment firm of Neuronetics, Inc. (STIM). InsiderAlpha holds 6 primary Form 4 filings for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Madryn Asset Management, LP submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Madryn Asset Management, LP been buying or selling stock?
Recorded transactions: 9 open-market purchases ($1.50M) and 3 open-market sales ($13.02M) across all tracked filings.
Where can I see all of Madryn Asset Management, LP'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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