Neuronetics, Inc. (STIM) Insider Trading
Over the last 3 months, STIM insiders made 10 open-market buys and 4 sales, a net purchase of $3.8M (SEC Form 4). Over the last 6 months, 65 institutions increased and 47 reduced their position (13F).
Insider Activity
Sentiment
96/100
Buys (3m)
10
Sells (3m)
4
Net (3m)
$3.8M
Insiders buying
Insider trades by month Buys Sells
May
Aug
Feb
Mar
Apr
May
Context3-month price +4.5%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 29, 2026 | CASCELLA ROBERTdirector | Grant | 36,250 | — |
| May 29, 2026 | Amin Avinashdirector | Grant | 30,000 | — |
| May 29, 2026 | Rosengarten Megandirector | Grant | 30,000 | — |
| May 29, 2026 | MUIR GLENN Pdirector | Grant | 30,000 | — |
| May 29, 2026 | Cucuz Sashadirector | Grant | 30,000 | — |
| May 29, 2026 | CONLEY SHERYL Ldirector | Grant | 30,000 | — |
| May 21, 2026 | Pfanstiel Stevenofficer: Former EVP, CFO and Treasurer | Sell | 8,569 | $1.34 |
| May 20, 2026 | Chernett Jorey10 percent owner | Buy | 100,000 | $1.17 |
| May 13, 2026 | Chernett Jorey10 percent owner | Buy | 475,000 | $1.34 |
| Apr 22, 2026 | Chernett Jorey10 percent owner | Buy | 100,000 | $1.58 |
| Mar 30, 2026 | Chernett Jorey10 percent owner | Buy | 500,000 | $1.35 |
| Mar 30, 2026 | Chernett Jorey10 percent owner | Buy | 385,442 | $1.25 |
| Mar 27, 2026 | Chernett Jorey10 percent owner | Buy | 125,000 | $1.40 |
| Mar 27, 2026 | Chernett Jorey10 percent owner | Buy | 25,000 | $1.44 |
| Mar 24, 2026 | Sullivan Keith Jother: Former Officer & Director | Sell | 46,289 | $1.34 |
| Mar 24, 2026 | Pfanstiel Stevenofficer: EVP, CFO and Treasurer | Sell | 16,431 | $1.34 |
| Mar 24, 2026 | MACAN WILLIAM ANDREWofficer: EVP, CLO and CS | Sell | 16,005 | $1.34 |
| Mar 23, 2026 | REUVERS DANIEL L.officer: President and CEO | Grant | 1,500,000 | — |
| Mar 23, 2026 | Chernett Jorey10 percent owner | Buy | 169,472 | $1.41 |
| Mar 20, 2026 | Chernett Jorey10 percent owner | Buy | 450,000 | $1.33 |
| Mar 20, 2026 | Chernett Jorey10 percent owner | Buy | 607,400 | $1.35 |
| Mar 6, 2026 | MACAN WILLIAM ANDREWofficer: EVP, CLO and CS | Sell | 609 | $1.34 |
| Feb 27, 2026 | MACAN WILLIAM ANDREWofficer: EVP, CLO and CS | Sell | 3,427 | $1.35 |
| Feb 27, 2026 | Sullivan Keith Jdirector, officer: President and CEO | Sell | 8,452 | $1.35 |
| Feb 25, 2026 | MACAN WILLIAM ANDREWofficer: EVP, CLO and CS | Grant | 210,000 | — |
| Feb 25, 2026 | Pfanstiel Stevenofficer: EVP, CFO and Treasurer | Grant | 250,000 | — |
| Feb 18, 2026 | Sullivan Keith Jdirector, officer: President and CEO | Sell | 33,847 | $1.65 |
| Feb 18, 2026 | MACAN WILLIAM ANDREWofficer: EVP, CLO and CS | Sell | 14,120 | $1.65 |
| Feb 12, 2026 | Sullivan Keith Jdirector, officer: President and CEO | Sell | 40,976 | $1.55 |
| Feb 12, 2026 | MACAN WILLIAM ANDREWofficer: EVP, CLO and CS | Sell | 3,485 | $1.55 |
Source: STIM SEC Form 4 filings, latest May 29, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their STIM positions over the last 6 months (SEC Form 13F).
Increased
65
New positions
41
Reduced
47
Sold out
41
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| MADRYN ASSET MANAGEMENT, LP | Unchanged | 18.5M | May 15, 2026 |
| MADRYN ASSET MANAGEMENT, LP | New Position | 18.5M | Feb 10, 2026 |
| UBS GROUP AG | Increased | 2.9M | May 5, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | Increased | 2.7M | May 15, 2026 |
| UBS GROUP AG | Increased | 2.6M | Jan 29, 2026 |
| VANGUARD GROUP INC | Reduced | 2.6M | Jan 29, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | Increased | 2.6M | Feb 17, 2026 |
| BLACKROCK, INC. | Increased | 2.4M | Feb 12, 2026 |
| BLACKROCK, INC. | Reduced | 2.3M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2.0M | May 15, 2026 |
| LANE GENERATIONAL LLC | Increased | 1.8M | May 14, 2026 |
| LANE GENERATIONAL LLC | New Position | 1.7M | Feb 12, 2026 |
| FOURWORLD CAPITAL MANAGEMENT LLC | Increased | 1.5M | May 15, 2026 |
| JANE STREET GROUP, LLC | Increased | 1.0M | Feb 12, 2026 |
| MASTERS CAPITAL MANAGEMENT LLC | Unchanged | 1.0M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.