NeuroOne Medical Technologies
Develops thin-film electrode and ablation systems for neurological diagnosis and treatment.
$1.68
After-hours close−0.11 (−6.41%)
At close$1.80(−9.34%)
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Breakdown13F · Form 4
Institutions 23.49%2.04M sharesInsiders 6.36%553.2K sharesOther 70.15%6.11M shares
Shares outstanding 8.70M · Float 6.88M · 79.1% free float
A split settled inside the quarter being compared, so quarter-on-quarter change is not shown.
Institutions13F, as of Jun 30, 2026
27 holders · 2.04M shares
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Bleichroeder LP | 666.7K | 7.66% | Aug 13, 2026 | |
| Vanguard Capital Management LLC | 352.8K | 4.05% | Aug 13, 2026 | |
| Bard Associates Inc | 305.4K | 3.51% | Aug 12, 2026 | |
| Perkins Capital Management Inc | 244.7K | 2.81% | Jul 24, 2026 | |
| Geode Capital Management, LLC | 93.6K | 1.07% | Aug 12, 2026 | |
| Sio Capital Management, LLC | 82.8K | 0.95% | Aug 14, 2026 | |
| Renaissance Technologies LLC | 70.9K | 0.81% | Aug 13, 2026 | |
| Vanguard Fiduciary Trust Co | 49.0K | 0.56% | Aug 13, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Merchant Adventure Fund, L.P. | 13.60% | 13G | Feb 4, 2025 ↗ | |
| Brian Pratt | 12.50% | 1.09M | 13G | Jul 14, 2026 ↗ |
| Bleichroeder LP | 8.03% | 13G | Aug 14, 2025 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Pratt Brian | 10 percent owner | 1.09M | 12.48% | Jul 14, 2026 |
| David A. Rosa | director, officer: CEO and President | 180.0K | 2.07% | Apr 1, 2026 |
| David J. Wambeke | officer: Chief Business Officer | 166.7K | 1.92% | Mar 3, 2026 |
| Ronald W. McClurg | officer: Chief Financial Officer | 74.0K | 0.85% | Apr 7, 2025 |
| Paul Buckman | director | 29.8K | 0.34% | Apr 7, 2026 |
| Jeffrey S. Mathiesen | director | 26.1K | 0.30% | Apr 7, 2026 |
| Steve Mertens | officer: Chief Technology Officer | 25.4K | 0.29% | Apr 1, 2026 |
| Edward Andrle | director | 22.3K | 0.26% | Apr 7, 2026 |
| Mark Christianson | officer: Market Development Director | 20.7K | 0.24% | Jul 2, 2026 |
| Jason Richard Mills | director | 8.3K | 0.10% | Apr 7, 2026 |
6 ten-percent owners hold 1.33M shares by Form 4, outside the officers-and-directors figure above · 5 people have not refiled in the last 18 months (192.8K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jun 30, 2026 | Mark Christiansonofficer: Market Development Director | Sale | 10,000 | $3.18 | 20,692 |
| Mar 30, 2026 | Mark Christiansonofficer: Business Development Director | Sale | 15,363 | $0.7400 | 198,920 |
| Mar 13, 2026 | Mark Christiansonofficer: Business Development Director | Sale | 100 | $0.8000 | 214,283 |
| Mar 12, 2026 | Mark Christiansonofficer: Business Development Director | Sale | 817 | $0.8000 | 214,383 |
| Mar 11, 2026 | Mark Christiansonofficer: Business Development Director | Sale | 2,109 | $0.8000 | 215,200 |
| Mar 10, 2026 | Mark Christiansonofficer: Business Development Director | Sale | 11,611 | $0.8000 | 217,309 |
| Mar 1, 2026 | David J. Wambekeofficer: Chief Business Officer | Purchase | 1,000,000 | $0.6704 | 1,000,000 |
| Sep 5, 2025 | Mark Christiansonofficer: Business Development Director | Sale | 30,000 | $0.7401 | 231,238 |
CongressHouse and Senate disclosures
Not reported.