Quick Takeaways
- STIM - Neuronetics, Inc. has 22 insiders with reported activity on this page.
- Net insider value flow over the last year: -$10,502,477.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 22 Insiders of Neuronetics, Inc.
- Symbol
- STIM on Nasdaq
- Location
- Malvern, PA
What Changed
- Buy value: $3,641,208; sell value: $14,143,684.
- Net share flow: -1,090,327.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$10,502,477.
Buys
$3,641,208
Shares: 2,793,314
Insiders: 1
Sells
$14,143,685
Shares: 3,883,641
Insiders: 5
Net
-$10,502,477
Shares: -1,090,327
Insiders: -4
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 2,793,314 | 183,641 | $3,641,208 | $270,404 | +$3,370,804 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 3,500,000 | $0 | $13,020,000 | -$13,020,000 |
| 9-12 | 0 | 200,000 | $0 | $853,281 | -$853,281 |
Neuronetics, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Madryn Health Partners II, LP | 10%+ Owner | $21,987,972 | Market | 10 Jul 2025 | ||
| MADRYN HEALTH ADVISORS GP II, LLC | 10%+ Owner | $21,987,972 | Market | 10 Jul 2025 | ||
| MADRYN HEALTH ADVISORS II, LP | 10%+ Owner | $21,987,972 | Market | 10 Jul 2025 | ||
| MADRYN HEALTH PARTNERS II (CAYMAN MASTER), LP | 10%+ Owner | $21,987,972 | Market | 10 Jul 2025 | ||
| Jorey Chernett | 10%+ Owner | $12,223,735 | +$3,641,208 | +42% | Filing P/S | 30 Mar 2026 |
| Madryn Asset Management, LP | 10%+ Owner | $8,411,544 | -$13,020,000 | -61% | Filing P/S | 08 Aug 2025 |
| CANNELL CAPITAL LLC | 10%+ Owner | $8,211,134 | Mixed | 01 Jun 2023 | ||
| Sasha Cucuz | Director | $5,544,421 | Mixed | 20 Oct 2025 | ||
| Keith J. Sullivan | Former Officer & Director | $2,131,838 | -$192,798 | -8.3% | Filing P/S | 19 Mar 2026 |
| Stephen Furlong | EVP, CFO and Treasurer | $2,058,620 | -$853,281 | -29% | Mixed | 12 May 2025 |
| Daniel L. Reuvers | President and CEO | $1,905,000 | Mixed | 23 Mar 2026 | ||
| Robert Cascella | Director | $1,607,333 | Mixed | 20 Oct 2025 | ||
| William Andrew Macan | EVP, CLO and CS | $1,202,341 | -$55,589 | -4.4% | Filing P/S | 19 Mar 2026 |
| Steven Pfanstiel | EVP, CFO and Treasurer | $1,110,566 | -$22,018 | -1.9% | Filing P/S | 19 Mar 2026 |
| Glenn P. Muir | Director | $1,015,057 | Mixed | 20 Oct 2025 | ||
| Sheryl L. Conley | Director | $605,284 | Mixed | 20 Oct 2025 | ||
| Megan Rosengarten | Director | $597,373 | Mixed | 22 May 2025 | ||
| Wilfred E. Jaeger | Director | $437,859 | Mixed | 25 May 2023 | ||
| John K. Bakewell | Director | $361,352 | Mixed | 24 May 2023 | ||
| Bruce Joseph Shook | Director | $217,557 | Mixed | 26 May 2022 | ||
| Avinash Amin | Director | $180,200 | Mixed | 22 May 2025 | ||
| Joseph H. Capper | Director | $136,345 | Mixed | 25 May 2023 |
Top shareholders of Neuronetics, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Madryn Asset Management, LP |
13D/G
3/4/5
13F
|
10%+ Owner · Company |
30%
|
20,737,061
|
$32,764,556 | $0 | 02 Mar 2026 | |
| MADRYN HEALTH ADVISORS GP II, LLC |
3/4/5
|
10%+ Owner |
25%
|
17,044,940
|
$21,987,972 | — | 10 Jul 2025 | |
| MADRYN HEALTH ADVISORS II, LP |
3/4/5
|
10%+ Owner |
25%
|
17,044,940
|
$21,987,972 | — | 10 Jul 2025 | |
| MADRYN HEALTH PARTNERS II (CAYMAN MASTER), LP |
3/4/5
|
10%+ Owner |
25%
|
17,044,940
|
$21,987,972 | — | 10 Jul 2025 | |
| Madryn Health Partners II, LP |
3/4/5
|
10%+ Owner |
25%
|
17,044,940
|
$21,987,972 | — | 10 Jul 2025 | |
| Jorey Chernett |
13D/G
3/4/5
|
Chernett Jorey · 10%+ Owner |
14%
|
9,778,718
|
$14,381,561 | $0 | 06 Apr 2026 | |
| CANNELL CAPITAL LLC |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
2,841,223
|
$8,211,134 | — | 01 Jun 2023 | |
| Sasha Cucuz |
3/4/5
|
Director |
2.9%
|
2,030,924
|
$5,544,421 | — | 20 Oct 2025 | |
| UBS Group AG |
13F
|
Company |
3.8%
|
2,607,047
|
$3,597,725 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
3.7%
|
2,582,382
|
$3,563,687 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
3.7%
|
2,552,404
|
$3,522,318 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
3.4%
|
2,353,751
|
$3,248,177 | — | 31 Dec 2025 | |
| Lane Generational LLC |
13F
|
Company |
2.5%
|
1,705,197
|
$2,353,172 | — | 31 Dec 2025 | |
| Keith J. Sullivan |
3/4/5
|
Former Officer & Director |
2.3%
|
1,590,924
|
$2,131,838 | -$192,798 | 19 Mar 2026 | |
| Stephen Furlong |
3/4/5
|
EVP, CFO and Treasurer |
—
mixed-class rows
|
488,803
mixed-class rows
|
$2,058,620 | -$853,281 | 12 May 2025 | |
| Daniel L. Reuvers |
3/4/5
|
President and CEO |
2.2%
|
1,500,000
|
$1,905,000 | — | 23 Mar 2026 | |
| Robert Cascella |
3/4/5
|
Director |
0.85%
|
588,767
|
$1,607,333 | — | 20 Oct 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
1.5%
|
1,017,862
|
$1,404,650 | — | 31 Dec 2025 | |
| MASTERS CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.4%
|
1,000,000
|
$1,380,000 | — | 31 Dec 2025 | |
| FourWorld Capital Management LLC |
13F
|
Company |
1.3%
|
931,250
|
$1,285,125 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.3%
|
891,733
|
$1,230,805 | — | 31 Dec 2025 | |
| William Andrew Macan |
3/4/5
|
EVP, CLO and CS |
1.3%
|
897,270
|
$1,202,341 | -$55,589 | 19 Mar 2026 | |
| Steven Pfanstiel |
3/4/5
|
EVP, CFO and Treasurer |
1.2%
|
828,781
|
$1,110,566 | -$22,018 | 19 Mar 2026 | |
| Glenn P. Muir |
3/4/5
|
Director |
0.54%
|
371,816
|
$1,015,057 | — | 20 Oct 2025 | |
| Ikarian Capital, LLC |
13F
|
Company |
1%
|
701,182
|
$967,631 | — | 31 Dec 2025 | |
| WEXFORD CAPITAL LP |
13F
|
Company |
0.93%
|
644,951
|
$890,030 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.84%
|
584,167
|
$806,150 | — | 31 Dec 2025 | |
| HighTower Advisors, LLC |
13F
|
Company |
0.81%
|
564,306
|
$778,742 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.69%
|
474,900
|
$655,362 | — | 31 Dec 2025 | |
| Sheryl L. Conley |
3/4/5
|
Director |
0.32%
|
221,716
|
$605,284 | — | 20 Oct 2025 | |
| Megan Rosengarten |
3/4/5
|
Director |
0.2%
|
140,890
|
$597,373 | — | 22 May 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.48%
|
331,954
|
$458,096 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.46%
|
321,561
|
$443,754 | — | 31 Dec 2025 | |
| Wilfred E. Jaeger |
3/4/5
|
Director |
—
mixed-class rows
|
154,665
mixed-class rows
|
$437,859 | — | 25 May 2023 | |
| XTX Topco Ltd |
13F
|
Company |
0.45%
|
314,194
|
$433,588 | — | 31 Dec 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.41%
|
286,045
|
$394,743 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.4%
|
278,400
|
$384,192 | — | 31 Dec 2025 | |
| AdvisorShares Investments LLC |
13F
|
Company |
0.39%
|
270,916
|
$373,864 | — | 31 Dec 2025 | |
| John K. Bakewell |
3/4/5
|
Director |
—
class O/S missing
|
114,352
|
$361,352 | — | 24 May 2023 | |
| JBF Capital, Inc. |
13F
|
Company |
0.34%
|
233,166
|
$321,769 | — | 31 Dec 2025 | |
| Massar Capital Management, LP |
13F
|
Company |
0.32%
|
221,000
|
$304,980 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.29%
|
198,745
|
$274,268 | — | 31 Dec 2025 | |
| BOOTHBAY FUND MANAGEMENT, LLC |
13F
|
Company |
0.25%
|
175,000
|
$241,500 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.24%
|
169,000
|
$233,220 | — | 31 Dec 2025 | |
| Dauntless Investment Group, LLC |
13F
|
Company |
0.23%
|
160,927
|
$222,079 | — | 31 Dec 2025 | |
| Bruce Joseph Shook |
3/4/5
|
Director |
—
class O/S missing
|
68,847
|
$217,557 | — | 26 May 2022 | |
| Aristides Capital LLC |
13F
|
Company |
0.2%
|
136,400
|
$188,232 | — | 31 Dec 2025 | |
| Avinash Amin |
3/4/5
|
Director |
0.06%
|
42,500
|
$180,200 | — | 22 May 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.17%
|
116,431
|
$160,675 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.16%
|
108,208
|
$149,327 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for Neuronetics, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Jorey Chernett | STIM | Common Stock | Purchase | 4.1% | $481,802 | $1.25 | 385,442 | 9,778,988 | 30 Mar 2026 | Direct |
| Jorey Chernett | STIM | Common Stock | Purchase | 5.62% | $675,000 | $1.35 | 500,000 | 9,393,276 | 27 Mar 2026 | Direct |
| Jorey Chernett | STIM | Common Stock | Purchase | 0.28% | $36,000 | $1.44 | 25,000 | 8,893,276 | 26 Mar 2026 | Direct |
| Jorey Chernett | STIM | Common Stock | Purchase | 1.43% | $175,000 | $1.40 | 125,000 | 8,868,276 | 25 Mar 2026 | Direct |
| Daniel L. Reuvers | STIM | Common Stock | Award | 1,500,000 | 1,500,000 | 23 Mar 2026 | Direct | |||
| Jorey Chernett | STIM | Common Stock | Purchase | 1.98% | $238,956 | $1.41 | 169,472 | 8,743,276 | 20 Mar 2026 | Direct |
| Steven Pfanstiel | STIM | Common Stock | Sale | -1.94% | $22,018 | $1.34 | -16,431 | 828,781 | 19 Mar 2026 | Direct |
| Keith J. Sullivan | STIM | Common Stock | Sale | -2.83% | $62,027 | $1.34 | -46,289 | 1,590,924 | 19 Mar 2026 | Direct |
| William Andrew Macan | STIM | Common Stock | Sale | -1.75% | $21,447 | $1.34 | -16,005 | 897,270 | 19 Mar 2026 | Direct |
| Jorey Chernett | STIM | Common Stock | Purchase | 5.54% | $598,500 | $1.33 | 450,000 | 8,573,804 | 19 Mar 2026 | Direct |
| Jorey Chernett | STIM | Common Stock | Purchase | 8.08% | $819,990 | $1.35 | 607,400 | 8,123,804 | 18 Mar 2026 | Direct |
| Keith J. Sullivan | STIM | Common Stock | Award | 7.38% | 112,500 | 1,637,213 | 17 Mar 2026 | Direct | ||
| William Andrew Macan | STIM | Common Stock | Award | 3.84% | 33,750 | 913,275 | 17 Mar 2026 | Direct | ||
| Steven Pfanstiel | STIM | Common Stock | Award | 3.05% | 25,000 | 845,212 | 17 Mar 2026 | Direct | ||
| Jorey Chernett | STIM | Common Stock | Purchase | 7.6% | $615,960 | $1.16 | 531,000 | 7,516,404 | 17 Mar 2026 | Direct |
| William Andrew Macan | STIM | Common Stock | Sale | -0.07% | $816 | $1.34 | -609 | 879,525 | 04 Mar 2026 | Direct |
| William Andrew Macan | STIM | Common Stock | Sale | -0.39% | $4,626 | $1.35 | -3,427 | 880,134 | 26 Feb 2026 | Direct |
| Keith J. Sullivan | STIM | Common Stock | Sale | -0.55% | $11,410 | $1.35 | -8,452 | 1,524,713 | 26 Feb 2026 | Direct |
| Steven Pfanstiel | STIM | Common Stock | Award | 43.8% | 250,000 | 820,212 | 23 Feb 2026 | Direct | ||
| William Andrew Macan | STIM | Common Stock | Award | 31.2% | 210,000 | 883,561 | 23 Feb 2026 | Direct | ||
| Keith J. Sullivan | STIM | Common Stock | Sale | -2.16% | $55,848 | $1.65 | -33,847 | 1,533,165 | 12 Feb 2026 | Direct |
| William Andrew Macan | STIM | Common Stock | Sale | -2.05% | $23,298 | $1.65 | -14,120 | 673,561 | 12 Feb 2026 | Direct |
| William Andrew Macan | STIM | Common Stock | Sale | -0.5% | $5,402 | $1.55 | -3,485 | 687,681 | 10 Feb 2026 | Direct |
| Keith J. Sullivan | STIM | Common Stock | Sale | -2.55% | $63,513 | $1.55 | -40,976 | 1,567,012 | 10 Feb 2026 | Direct |
| William Andrew Macan | STIM | Common Stock | Award | 31.2% | 164,361 | 691,166 | 30 Dec 2025 | Direct | ||
| Steven Pfanstiel | STIM | Common Stock | Award | 42.6% | 170,212 | 570,212 | 30 Dec 2025 | Direct | ||
| Robert Cascella | STIM | Common Stock | Award | 1.82% | 10,531 | 588,767 | 20 Oct 2025 | Direct | ||
| Sheryl L. Conley | STIM | Common Stock | Award | 3.42% | 7,326 | 221,716 | 20 Oct 2025 | Direct | ||
| Glenn P. Muir | STIM | Common Stock | Award | 2.07% | 7,554 | 371,816 | 20 Oct 2025 | Direct | ||
| Sasha Cucuz | STIM | Common Stock | Award | 0.43% | 6,410 | 1,512,798 | 20 Oct 2025 | Direct | ||
| Madryn Asset Management, LP | STIM | Common Stock | Sale | -75.4% | $13,020,000 | $3.72 | -3,500,000 | 1,142,351 | 08 Aug 2025 | See footnotes |
| Steven Pfanstiel | STIM | Common Stock | Award | 400,000 | 400,000 | 15 Jul 2025 | Direct | |||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | -1.94% | -337,312 | 17,044,940 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | -1.94% | -337,312 | 17,044,940 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | -1.94% | -337,312 | 17,044,940 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | -1.94% | -337,312 | 17,044,940 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | -1.94% | -337,312 | 17,044,940 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | 30.8% | 337,312 | 1,430,953 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | 30.8% | 337,312 | 1,430,953 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | 30.8% | 337,312 | 1,430,953 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | 30.8% | 337,312 | 1,430,953 | 10 Jul 2025 | See footnotes | ||
| Madryn Asset Management, LP | STIM | Common Stock | Gift | 30.8% | 337,312 | 1,430,953 | 10 Jul 2025 | See footnotes | ||
| Megan Rosengarten | STIM | Common Stock | Award | 27% | 30,000 | 140,890 | 22 May 2025 | Direct | ||
| Robert Cascella | STIM | Common Stock | Award | 6.69% | 36,250 | 578,236 | 22 May 2025 | Direct | ||
| Avinash Amin | STIM | Common Stock | Award | 240% | 30,000 | 42,500 | 22 May 2025 | Direct | ||
| Sheryl L. Conley | STIM | Common Stock | Award | 16.3% | 30,000 | 214,390 | 22 May 2025 | Direct | ||
| Sasha Cucuz | STIM | Common Stock | Award | 2.03% | 30,000 | 1,506,388 | 22 May 2025 | Direct | ||
| Glenn P. Muir | STIM | Common Stock | Award | 8.97% | 30,000 | 364,262 | 22 May 2025 | Direct | ||
| Stephen Furlong | STIM | Common Stock | Sale | -1.57% | $27,206 | $4.16 | -6,540 | 410,053 | 13 May 2025 | Direct |
| Stephen Furlong | STIM | Common Stock | Sale | -31.7% | $826,074 | $4.27 | -193,460 | 416,593 | 12 May 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.