STIM · Insider Trading
Neuronetics, Inc. Common Stock
Every open-market purchase and sale reported by STIM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Jorey Chernett | 10%+ Owner | Buy | +14,000 | +$44.24K |
| 2026-07-23 | Nir Naor | EVP, CFO & Treasurer | A | +500,000 | — |
| 2026-07-15 | Jorey Chernett | 10%+ Owner | Buy | +35,000 | +$62.30K |
| 2026-06-17 | Avinash Amin | Director | J | −42,500 | — |
| 2026-06-17 | Madryn Select Opportunities, LP | 10%+ Owner | J | +435,000 | — |
| 2026-05-29 | Glenn P Muir | Director | A | +30,000 | — |
| 2026-05-29 | Megan Rosengarten | Director | A | +30,000 | — |
| 2026-05-29 | Avinash Amin | Director | A | +30,000 | — |
| 2026-05-29 | Sasha Cucuz | Director | A | +30,000 | — |
| 2026-05-29 | Sheryl L Conley | Director | A | +30,000 | — |
| 2026-05-29 | Robert Cascella | Director | A | +36,250 | — |
| 2026-05-21 | Steven Pfanstiel | Former EVP, CFO and Treasurer | Sell | −8,569 | −$11.48K |
| 2026-05-20 | Jorey Chernett | 10%+ Owner | Buy | +100,000 | +$117.00K |
| 2026-05-13 | Jorey Chernett | 10%+ Owner | Buy | +475,000 | +$636.50K |
| 2026-04-22 | Jorey Chernett | 10%+ Owner | Buy | +200,000 | +$309.00K |
| 2026-04-01 | MADRYN HEALTH PARTNERS II (CAYMAN MASTER), LP | 10%+ Owner | G | — | — |
| 2026-03-30 | Jorey Chernett | 10%+ Owner | Buy | +500,000 | +$675.00K |
| 2026-03-30 | Jorey Chernett | 10%+ Owner | Buy | +385,442 | +$481.80K |
| 2026-03-27 | Jorey Chernett | 10%+ Owner | Buy | +150,000 | +$211.00K |
| 2026-03-24 | William Andrew Macan | EVP, CLO and CS | Sell | −16,005 | −$21.45K |
| 2026-03-24 | Keith J Sullivan | — | Sell | −46,289 | −$62.03K |
| 2026-03-24 | Steven Pfanstiel | EVP, CFO and Treasurer | Sell | −16,431 | −$22.02K |
| 2026-03-23 | Jorey Chernett | 10%+ Owner | Buy | +169,472 | +$238.96K |
| 2026-03-23 | Daniel L. Reuvers | President and CEO | A | +1,500,000 | — |
| 2026-03-20 | Jorey Chernett | 10%+ Owner | Buy | +1,057,400 | +$1.42M |
| 2026-03-18 | Keith J Sullivan | President and CEO | A | +112,500 | — |
| 2026-03-18 | Steven Pfanstiel | EVP, CFO and Treasurer | A | +25,000 | — |
| 2026-03-18 | Jorey Chernett | 10%+ Owner | Buy | +531,000 | +$615.96K |
| 2026-03-18 | William Andrew Macan | EVP, CLO and CS | A | +33,750 | — |
| 2026-03-06 | William Andrew Macan | EVP, CLO and CS | Sell | −609 | −$816 |
| 2026-02-27 | Keith J Sullivan | President and CEO | Sell | −8,452 | −$11.41K |
| 2026-02-27 | William Andrew Macan | EVP, CLO and CS | Sell | −3,427 | −$4.63K |
| 2026-02-25 | William Andrew Macan | EVP, CLO and CS | A | +210,000 | — |
| 2026-02-25 | Steven Pfanstiel | EVP, CFO and Treasurer | A | +250,000 | — |
| 2026-02-18 | Keith J Sullivan | President and CEO | Sell | −33,847 | −$55.85K |
| 2026-02-18 | William Andrew Macan | EVP, CLO and CS | Sell | −14,120 | −$23.30K |
| 2026-02-12 | Keith J Sullivan | President and CEO | Sell | −40,976 | −$63.51K |
| 2026-02-12 | William Andrew Macan | EVP, CLO and CS | Sell | −3,485 | −$5.40K |
| 2025-12-31 | William Andrew Macan | EVP, GC, CCO and CS | A | +164,361 | — |
| 2025-12-31 | Steven Pfanstiel | EVP, CFO and Treasurer | A | +170,212 | — |
| 2025-10-22 | Sheryl L Conley | Director | A | +7,326 | — |
| 2025-10-22 | Glenn P Muir | Director | A | +7,554 | — |
| 2025-10-22 | Robert Cascella | Director | A | +10,531 | — |
| 2025-10-22 | Sasha Cucuz | Director | A | +6,410 | — |
| 2025-08-12 | MADRYN HEALTH ADVISORS GP II, LLC | 10%+ Owner | Sell | −28,000,000 | −$104.16M |
| 2025-07-15 | Steven Pfanstiel | EVP, CFO and Treasurer | A | +400,000 | — |
| 2025-05-27 | Avinash Amin | Director | A | +30,000 | — |
| 2025-05-27 | Sheryl L Conley | Director | A | +30,000 | — |
| 2025-05-27 | Robert Cascella | Director | A | +36,250 | — |
| 2025-05-27 | Glenn P Muir | Director | A | +30,000 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| MADRYN HEALTH ADVISORS GP II, LLC | 10%+ Owner | 17,333,542 | $38.83M |
| Madryn Select Opportunities, LP | 10%+ Owner | 17,104,530 | $38.31M |
| MADRYN HEALTH PARTNERS II (CAYMAN MASTER), LP | 10%+ Owner | 17,044,940 | $38.18M |
| Jorey Chernett | 10%+ Owner | 10,602,988 | $23.75M |
| Keith J Sullivan | President and CEO | 1,590,924 | $3.56M |
| Sasha Cucuz | Director | 1,544,840 | $3.46M |
| Daniel L. Reuvers | President and CEO | 1,500,000 | $3.36M |
| William Andrew Macan | EVP, CLO and CS | 897,270 | $2.01M |
| Steven Pfanstiel | Former EVP, CFO and Treasurer | 836,643 | $1.87M |
| Robert Cascella | Director | 625,017 | $1.40M |
| Nir Naor | EVP, CFO & Treasurer | 500,000 | $1.12M |
| Stephen Furlong | EVP, CFO and Treasurer | 416,593 | $933.17K |
| Glenn P Muir | Director | 401,816 | $900.07K |
| Sheryl L Conley | Director | 251,716 | $563.84K |
| Megan Rosengarten | Director | 170,890 | $382.79K |
| Avinash Amin | Director | 69,566 | $155.83K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the STIM quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.