Neuronetics
Sells NeuroStar TMS systems and operates Greenbrook mental-health treatment centers.
$2.97
After-hours close+0.03 (+0.89%)
At close$2.94(−0.68%)
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Breakdown13F · Form 4
Institutions 59.85%41.65M sharesInsiders 13.57%9.44M sharesOther 26.58%18.50M shares
Shares outstanding 69.59M · Float 28.29M · 40.7% free float
Institutions13F, as of Mar 31, 2026
103 holders · 41.65M shares · 28 new positions · 53 increased · 23 reduced · 25 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Madryn Asset Management, LP | 18.48M | 26.55% | 0 | May 15, 2026 |
| UBS Group AG | 2.87M | 4.13% | +263.6K | May 5, 2026 |
| Balyasny Asset Management L.P. | 2.74M | 3.94% | +191.4K | May 15, 2026 |
| BlackRock, Inc. | 2.32M | 3.33% | −35.2K | May 13, 2026 |
| Vanguard Capital Management LLC | 2.05M | 2.94% | +2.05Mnew | May 15, 2026 |
| Lane Generational LLC | 1.77M | 2.55% | +69.4K | May 14, 2026 |
| Fourworld Capital Management LLC | 1.49M | 2.14% | +558.1K | May 15, 2026 |
| Masters Capital Management LLC | 1.00M | 1.44% | 0 | May 15, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Madryn Asset Management, LP | 30.30% | 20.74M | 13D | Mar 4, 2026 ↗ |
| Chernett Jorey | 13.92% | 10.60M | 13D | Aug 24, 2026 ↗ |
| Parian Ultreia LP | 7.00% | 4.84M | 13G | Mar 17, 2026 ↗ |
| Point72 Asset Management, L.P. | 5.00% | 3.82M | 13G | Aug 14, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Chernett Jorey | 10 percent owner | 10.60M | 15.24% | Aug 17, 2026 |
| Sasha Cucuz | director | 2.06M | 2.96% | May 29, 2026 |
| Keith J. Sullivan | other: Former Officer & Director | 1.59M | 2.29% | Mar 24, 2026 |
| Daniel L. Reuvers | officer: President and CEO | 1.50M | 2.16% | Mar 23, 2026 |
| Madryn Asset Management, LP | 10 percent owner | 1.44M | 2.06% | Jun 17, 2026 |
| William Andrew Macan | officer: EVP, CLO and CS | 897.3K | 1.29% | Mar 24, 2026 |
| Steven Pfanstiel | officer: Former EVP, CFO and Treasurer | 836.6K | 1.20% | May 21, 2026 |
| Robert Cascella | director | 625.0K | 0.90% | May 29, 2026 |
| Nir Naor | officer: EVP, CFO & Treasurer | 500.0K | 0.72% | Jul 23, 2026 |
| Stephen Furlong | officer: EVP, CFO and Treasurer | 410.1K | 0.59% | May 14, 2025 |
6 ten-percent owners hold 16.97M shares by Form 4 — the 13D/G table above shows those stakes, the figure above counts officers and directors only · 13 people have not refiled in the last 18 months (1.34M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 13, 2026 | Jorey Chernett10 percent owner | Sale | 100 | $5.00 | 0 |
| Aug 14, 2026 | Jorey Chernett10 percent owner | Purchase | 14,000 | $3.16 | 10,602,988 |
| Jul 14, 2026 | Jorey Chernett10 percent owner | Purchase | 35,000 | $1.78 | 10,588,988 |
| Mar 19, 2026 | Steven Pfanstielofficer: Former EVP, CFO and Treasurer | Sale · 2 lots | 25,000 | $1.34 | 828,781 |
| May 19, 2026 | Jorey Chernett10 percent owner | Purchase | 100,000 | $1.17 | 10,553,988 |
| May 12, 2026 | Jorey Chernett10 percent owner | Purchase | 475,000 | $1.34 | 10,453,988 |
| Apr 20, 2026 | Jorey Chernett10 percent owner | Purchase | 100,000 | $1.58 | 9,878,988 |
| Apr 21, 2026 | Jorey Chernett10 percent owner | Purchase | 100,000 | $1.51 | 9,978,988 |
| Mar 27, 2026 | Jorey Chernett10 percent owner | Purchase | 500,000 | $1.35 | 9,393,276 |
| Mar 30, 2026 | Jorey Chernett10 percent owner | Purchase | 385,442 | $1.25 | 9,778,988 |
CongressHouse and Senate disclosures
Not reported.