STIMNasdaqSurgical & Medical Instruments & ApparatusFiscal year ends December 31
Neuronetics, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 11, 2026
$1.91+0.02 (+1.33%)
Close on Oct 19, 2026
- Market cap
- $139.68M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
48.8%
37M of 76M shares
Institutional holders
87
17 new, 28 sold out
Net institutional buying
-4M
In Q2 2026
Insider trades, 12 months
14 buys · 11 sales
Net bought $4.53M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Parian Ultreia LP | 4,844,908 | 7.00% | 13G (passive) | Mar 17, 2026 |
| Point72 Capital Advisors, Inc. | 3,822,124 | 5.00% | 13G (passive) | Aug 13, 2026 |
| Kent Lake Partners LP | 2,077,848 | 6.90% | 13G (passive) | Sep 30, 2024 |
| Madryn Asset Management, LP | 20,737,061 | 30.30% | 13D (active) amendment | Mar 2, 2026 |
| Chernett Jorey | 10,602,988 | 13.92% | 13D (active) amendment | Aug 14, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of STIM | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Madryn Asset Management, LP | 18,540,488 | 24.33% | $24.10M | +64,595 | 65.29% |
| UBS Group AG | 2,279,099 | 2.99% | $2.96M | −591,499 | 0.00% |
| Wexford Capital LP | 2,002,625 | 2.63% | $2.60M | +1,301,664 | 0.33% |
| FourWorld Capital Management LLC | 1,744,142 | 2.29% | $2.27M | +254,820 | 2.06% |
| Lane Generational LLC | 1,633,372 | 2.14% | $2.12M | −141,252 | 1.86% |
| Vanguard Capital Management LLC | 1,507,097 | 1.98% | $1.96M | −540,878 | 0.00% |
| Masters Capital Management LLC | 1,000,000 | 1.31% | $1.30M | – | 0.03% |
| AdvisorShares Investments LLC | 742,795 | 0.97% | $965.63K | +125,602 | 0.12% |
| Ikarian Capital, LLC | 701,182 | 0.92% | $911.54K | – | 0.10% |
| BlackRock, Inc. | 596,622 | 0.78% | $775.61K | −1,721,915 | 0.00% |
| HighTower Advisors, LLC | 563,741 | 0.74% | $732.86K | +1,371 | 0.00% |
| Marshall Wace, Llp | 485,692 | 0.64% | $631.40K | New | 0.00% |
| Geode Capital Management, LLC | 458,474 | 0.60% | $596.24K | −500,515 | 0.00% |
| Citadel Advisors LLC | 421,903 | 0.55% | $548.47K | +345,306 | 0.00% |
| Dauntless Investment Group, LLC | 369,187 | 0.48% | $479.94K | +99,979 | 0.38% |
| State Street Corp | 290,299 | 0.38% | $377.39K | −552,248 | 0.00% |
| Centiva Capital, LP | 285,913 | 0.38% | $371.69K | +116,594 | 0.00% |
| Vanguard Fiduciary Trust Co | 264,734 | 0.35% | $344.15K | +6,700 | 0.00% |
| Goldman Sachs Group Inc | 264,088 | 0.35% | $343.31K | +30,498 | 0.00% |
| JBF Capital, Inc. | 233,166 | 0.31% | $303.12K | – | 0.04% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 87 | 37M | 48.8% | 17 / 29 | 25 / 28 | 4M | 8M |
| Q1 2026 | 99 | 42M | 54.7% | 28 / 25 | 23 / 22 | 6M | 4M |
| Q4 2025 | 95 | 42M | 55.5% | 15 / 32 | 27 / 18 | 25M | 4M |
| Q3 2025 | 100 | 21M | 27.9% | 21 / 38 | 21 / 11 | 6M | 3M |
| Q2 2025 | 90 | 18M | 23.7% | 23 / 27 | 21 / 35 | 5M | 4M |
| Q1 2025 | 102 | 17M | 22.5% | 62 / 15 | 12 / 4 | 11M | 2M |
| Q4 2024 | 45 | 8M | 9.9% | 11 / 9 | 10 / 14 | 2M | 5M |
| Q3 2024 | 48 | 11M | 13.9% | 8 / 8 | 14 / 25 | 5M | 10M |
| Q2 2024 | 67 | 18M | 23.0% | 8 / 18 | 25 / 7 | 2M | 3M |
| Q1 2024 | 66 | 18M | 23.3% | 11 / 21 | 19 / 11 | 3M | 1M |
| Q4 2023 | 66 | 16M | 20.9% | 13 / 11 | 25 / 3 | 1M | 3M |
| Q3 2023 | 56 | 17M | 22.8% | 3 / 13 | 26 / 16 | 3M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of STIM | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 1,056,478 | 1.39% | $1.37M | 0.00% | Jun 30, 2026 |
| AdvisorShares Psychedelics ETF | 742,795 | 0.97% | $965.63K | 2.17% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 424,323 | 0.56% | $551.62K | 0.00% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 217,184 | 0.29% | $334.46K | 0.00% | May 31, 2026 |
| Vanguard Russell 2000 Index Fund | 189,766 | 0.25% | $292.24K | 0.00% | May 31, 2026 |
| Ultra-Small Company Market Fund | 95,205 | 0.12% | $123.77K | 0.08% | Jun 30, 2026 |
| iShares Micro-Cap ETF | 93,494 | 0.12% | $121.54K | 0.01% | Jun 30, 2026 |
| Goldman Sachs Absolute Return Tracker Fund | 87,050 | 0.11% | $113.17K | 0.00% | Jun 30, 2026 |
| 1290 VT GAMCO Small Company Value Portfolio | 75,000 | 0.10% | $97.50K | 0.00% | Jun 30, 2026 |
| Fidelity Total Market Index Fund | 69,400 | 0.09% | $106.88K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 58,666 | 0.08% | $90.35K | 0.00% | May 31, 2026 |
| Invesco NASDAQ Future Gen 200 ETF | 57,343 | 0.08% | $88.31K | 0.47% | May 31, 2026 |
| Fidelity Nasdaq Composite Index Fund | 45,586 | 0.06% | $70.20K | 0.00% | May 31, 2026 |
| AQR Small Cap Momentum Style Fund | 36,487 | 0.05% | $52.91K | 0.03% | Mar 31, 2026 |
| Vanguard Russell 2000 Growth Index Fund | 35,270 | 0.05% | $54.32K | 0.00% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Nir Naor | EVP, CFO & Treasurer | 500,000 | 0.66% | Jul 23, 2026 |
| Cory Anderson | EVP & Gen. Manager, Greenbrook | 55,003 | 0.07% | Jul 13, 2026 |
| Steven Pfanstiel | Former EVP, CFO and Treasurer | 836,643 | 1.10% | May 21, 2026 |
| Francis X. Brown Iii | Interim PAO | 19,968 | 0.03% | May 13, 2026 |
| William Andrew Macan | EVP, CLO and CS | 897,270 | 1.18% | Mar 24, 2026 |
| Daniel L. Reuvers | President and CEO | 1,500,000 | 1.97% | Mar 23, 2026 |
| Stephen Furlong | EVP, CFO and Treasurer | 410,053 | 0.54% | May 14, 2025 |
| Avinash Amin | Director | 30,000 | 0.04% | Jun 17, 2026 |
| Sheryl L. Conley | Director | 251,716 | 0.33% | May 29, 2026 |
| Robert Cascella | Director | 625,017 | 0.82% | May 29, 2026 |
| Megan Rosengarten | Director | 170,890 | 0.22% | May 29, 2026 |
| Sasha Cucuz | Director | 2,060,924 | 2.70% | May 29, 2026 |
| Glenn P. Muir | Director | 401,816 | 0.53% | May 29, 2026 |
| Jorey Chernett | 10% owner | 10,602,988 | 13.92% | Aug 17, 2026 |
| Madryn Select Opportunities, LP | 10% owner | 24,237,061 | 31.81% | Jun 17, 2026 |
| Madryn Health Partners Ii (Cayman Master), Lp | 10% owner | – | – | Jun 17, 2026 |
| Madryn Health Partners II, LP | 10% owner | 2,269,073 | 2.98% | Jun 17, 2026 |
| Madryn Health Advisors Ii, Lp | 10% owner | – | – | Jun 17, 2026 |
| Madryn Health Advisors Gp Ii, Llc | 10% owner | 17,044,940 | 22.37% | Jun 17, 2026 |
| Madryn Asset Management, LP | 10% owner | 17,333,542 | 22.75% | Jun 17, 2026 |
| Keith J. Sullivan | – | 1,590,924 | 2.09% | Mar 24, 2026 |
| Madryn Select Advisors Gp, Llc | 10% owner | – | – | Aug 12, 2025 |
| Madryn Select Advisors, Lp | 10% owner | – | – | Aug 12, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Jorey Chernett 10% owner | Aug 14, 2026 | Buy | +14,000 | $3.16 | $44.24K | 10,602,988 |
| Nir Naor EVP, CFO & Treasurer | Jul 23, 2026 | Award | +500,000 | – | – | 500,000 |
| Jorey Chernett 10% owner | Jul 14, 2026 | Buy | +35,000 | $1.78 | $62.30K | 10,588,988 |
| Madryn Health Partners II, LP 10% owner | Jun 15, 2026 | Other | +4,634 | – | – | 2,269,073 |
| Madryn Health Partners II, LP 10% owner | Jun 15, 2026 | Other | +34,932 | – | – | 17,104,530 |
| Madryn Health Partners II, LP 10% owner | Jun 15, 2026 | Other | +2,934 | – | – | 1,435,958 |
| Avinash Amin Director | Jun 15, 2026 | Other | −4,634 | – | – | 30,000 |
| Avinash Amin Director | Jun 15, 2026 | Other | −34,932 | – | – | 34,634 |
| Avinash Amin Director | Jun 15, 2026 | Other | −2,934 | – | – | 69,566 |
| Madryn Health Partners II, LP 10% owner | May 28, 2026 | Other | +3,271 | – | – | 2,264,439 |
| Madryn Health Partners II, LP 10% owner | May 28, 2026 | Other | +24,658 | – | – | 17,069,598 |
| Madryn Health Partners II, LP 10% owner | May 28, 2026 | Other | +2,071 | – | – | 1,433,024 |
| Megan Rosengarten Director | May 28, 2026 | Award | +30,000 | – | – | 170,890 |
| Sheryl L. Conley Director | May 28, 2026 | Award | +30,000 | – | – | 251,716 |
| Glenn P. Muir Director | May 28, 2026 | Award | +30,000 | – | – | 401,816 |
| Robert Cascella Director | May 28, 2026 | Award | +36,250 | – | – | 625,017 |
| Avinash Amin Director | May 28, 2026 | Award | +30,000 | – | – | 72,500 |
| Sasha Cucuz Director | May 28, 2026 | Award | +30,000 | – | – | 1,542,798 |
| Jorey Chernett 10% owner | May 19, 2026 | Buy | +100,000 | $1.17 | $117.00K | 10,553,988 |
| Jorey Chernett 10% owner | May 12, 2026 | Buy | +475,000 | $1.34 | $636.50K | 10,453,988 |
| Jorey Chernett 10% owner | Apr 21, 2026 | Buy | +100,000 | $1.51 | $151.00K | 9,978,988 |
| Jorey Chernett 10% owner | Apr 20, 2026 | Buy | +100,000 | $1.58 | $158.00K | 9,878,988 |
| Jorey Chernett 10% owner | Mar 30, 2026 | Buy | +385,442 | $1.25 | $481.80K | 9,778,988 |
| Jorey Chernett 10% owner | Mar 27, 2026 | Buy | +500,000 | $1.35 | $675.00K | 9,393,276 |
| Jorey Chernett 10% owner | Mar 26, 2026 | Buy | +25,000 | $1.44 | $36.00K | 8,893,276 |
| Jorey Chernett 10% owner | Mar 25, 2026 | Buy | +125,000 | $1.40 | $175.00K | 8,868,276 |
| Daniel L. Reuvers President and CEO | Mar 23, 2026 | Award | +1,500,000 | – | – | 1,500,000 |
| Jorey Chernett 10% owner | Mar 20, 2026 | Buy | +169,472 | $1.41 | $238.96K | 8,743,276 |
| Steven Pfanstiel Former EVP, CFO and Treasurer | Mar 19, 2026 | Sale | −8,569 | $1.34 | $11.48K | 836,643 |
| Keith J. Sullivan – | Mar 19, 2026 | Sale | −46,289 | $1.34 | $62.03K | 1,590,924 |
| William Andrew Macan EVP, CLO and CS | Mar 19, 2026 | Sale | −16,005 | $1.34 | $21.45K | 897,270 |
| Steven Pfanstiel EVP, CFO and Treasurer | Mar 19, 2026 | Sale | −16,431 | $1.34 | $22.02K | 828,781 |
| Jorey Chernett 10% owner | Mar 19, 2026 | Buy | +450,000 | $1.33 | $598.50K | 8,573,804 |
| Jorey Chernett 10% owner | Mar 18, 2026 | Buy | +607,400 | $1.35 | $819.99K | 8,123,804 |
| Jorey Chernett 10% owner | Mar 17, 2026 | Buy | +531,000 | $1.16 | $615.96K | 7,516,404 |
| William Andrew Macan EVP, CLO and CS | Mar 17, 2026 | Award | +33,750 | – | – | 913,275 |
| Steven Pfanstiel EVP, CFO and Treasurer | Mar 17, 2026 | Award | +25,000 | – | – | 845,212 |
| Keith J. Sullivan President and CEO, Director | Mar 17, 2026 | Award | +112,500 | – | – | 1,637,213 |
| William Andrew Macan EVP, CLO and CS | Mar 4, 2026 | Sale | −609 | $1.34 | $816 | 879,525 |
| William Andrew Macan EVP, CLO and CS | Feb 26, 2026 | Sale | −3,427 | $1.35 | $4.63K | 880,134 |
| Keith J. Sullivan President and CEO, Director | Feb 26, 2026 | Sale | −8,452 | $1.35 | $11.41K | 1,524,713 |
| William Andrew Macan EVP, CLO and CS | Feb 23, 2026 | Award | +210,000 | – | – | 883,561 |
| Steven Pfanstiel EVP, CFO and Treasurer | Feb 23, 2026 | Award | +250,000 | – | – | 820,212 |
| Keith J. Sullivan President and CEO, Director | Feb 12, 2026 | Sale | −33,847 | $1.65 | $55.85K | 1,533,165 |
| William Andrew Macan EVP, CLO and CS | Feb 12, 2026 | Sale | −14,120 | $1.65 | $23.30K | 673,561 |
| Keith J. Sullivan President and CEO, Director | Feb 10, 2026 | Sale | −40,976 | $1.55 | $63.51K | 1,567,012 |
| William Andrew Macan EVP, CLO and CS | Feb 10, 2026 | Sale | −3,485 | $1.55 | $5.40K | 687,681 |
| Steven Pfanstiel EVP, CFO and Treasurer | Dec 30, 2025 | Award | +170,212 | – | – | 570,212 |
| William Andrew Macan EVP, GC, CCO and CS | Dec 30, 2025 | Award | +164,361 | – | – | 691,166 |
| Sasha Cucuz Director | Oct 20, 2025 | Award | +6,410 | – | – | 1,512,798 |
| Robert Cascella Director | Oct 20, 2025 | Award | +10,531 | – | – | 588,767 |
| Glenn P. Muir Director | Oct 20, 2025 | Award | +7,554 | – | – | 371,816 |
| Sheryl L. Conley Director | Oct 20, 2025 | Award | +7,326 | – | – | 221,716 |
| Madryn Asset Management, LP 10% owner | Aug 8, 2025 | Sale | −2,925,554 | $3.72 | $10.88M | 17,333,542 |
| Madryn Asset Management, LP 10% owner | Aug 8, 2025 | Sale | −381,640 | $3.72 | $1.42M | 2,261,168 |
| Madryn Asset Management, LP 10% owner | Aug 8, 2025 | Sale | −192,806 | $3.72 | $717.24K | 1,142,351 |
| Steven Pfanstiel EVP, CFO and Treasurer | Jul 15, 2025 | Award | +200,000 | – | – | 400,000 |
| Steven Pfanstiel EVP, CFO and Treasurer | Jul 15, 2025 | Award | +200,000 | – | – | 200,000 |
| Madryn Health Advisors Gp Ii, Llc 10% owner | Jul 10, 2025 | Gift | −337,312 | – | – | 17,044,940 |
| Madryn Health Advisors Gp Ii, Llc 10% owner | Jul 10, 2025 | Gift | +337,312 | – | – | 1,430,953 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| William Andrew Macan Former Officer | Aug 19, 2026 | 149,891 | $463.93K | Aug 19, 2026 | Restricted Stock Vesting |
| William Andrew Macan Officer | Aug 18, 2026 | 121,033 | $388.27K | Aug 18, 2026 | Restricted Stock Vesting |
| Keith J. Sullivan Former Officer and Director | Jun 8, 2026 | 42,164 | $54.35K | Jun 8, 2026 | Restricted Stock Vesting |
| William Andrew Macan Officer | Mar 19, 2026 | 16,005 | $21.12K | Mar 19, 2026 | Restricted Stock Vesting |
| Keith J. Sullivan Officer, Director | Mar 19, 2026 | 46,289 | $61.09K | Mar 19, 2026 | Restricted Stock Vesting |
| William Andrew Macan Officer | Mar 4, 2026 | 609 | $814 | Mar 4, 2026 | Restricted Stock Vesting |
| Keith J. Sullivan Officer, Director | Feb 26, 2026 | 8,452 | $11.37K | Feb 26, 2026 | Restricted Stock Vesting |
| William Andrew Macan Officer | Feb 26, 2026 | 3,427 | $4.61K | Feb 26, 2026 | Restricted Stock Vesting |
| William Andrew Macan Officer | Feb 12, 2026 | 14,120 | $23.24K | Feb 12, 2026 | Restricted Stock Vesting |
| Keith J. Sullivan Officer, Director | Feb 12, 2026 | 33,847 | $55.71K | Feb 12, 2026 | Restricted Stock Vesting |
| William Andrew Macan Officer | Feb 10, 2026 | 3,485 | $5.39K | Feb 10, 2026 | Restricted Stock Vesting |
| Keith J. Sullivan Officer, Director | Feb 10, 2026 | 40,976 | $63.40K | Feb 10, 2026 | Restricted Stock Vesting |
| Madryn Health Partners Ii, Lp 10% Stockholder, Board Member | Aug 8, 2025 | 192,806 | $717.24K | Aug 8, 2025 | Merger/Acquisition |
| Madryn Select Opportunities, Lp 10% Stockholder, Board Member | Aug 8, 2025 | 381,640 | $1.42M | Aug 8, 2025 | Merger/Acquisition |
| Health Prts Ii (Cay Mast) Lp Madryn 10% Stockholder, Board Member | Aug 8, 2025 | 2,925,554 | $10.88M | Aug 8, 2025 | Merger/Acquisition |