ETON
Eton Pharmaceuticals, Inc.
NASDAQ · Healthcare · Biotechnology · US
$58.45
−2.42%0
Insider buys (3m)
16
Insider sells (3m)
-$18.1M
Net value (3m)
+99.7%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 31, 2026 | MAIER PAUL V · director | M-Exempt | 12,500 | $7.31 |
| Aug 28, 2026 | MAIER PAUL V · director | M-Exempt | 50,000 | $3.78 |
| Aug 28, 2026 | MAIER PAUL V · director | Sale | 36,387 | $59 |
| Aug 28, 2026 | MAIER PAUL V · director | Sale | 13,485 | $60 |
| Aug 28, 2026 | MAIER PAUL V · director | Sale | 128 | $62 |
| Aug 24, 2026 | Krempa David · officer: Chief Business Officer | Sale | 25,000 | $65 |
| Aug 24, 2026 | Krempa David · officer: Chief Business Officer | M-Exempt | 25,000 | $7.31 |
| Aug 20, 2026 | BRYNJELSEN SEAN · director, officer: President & CEO | Sale | 7,342 | $62 |
| Aug 20, 2026 | BRYNJELSEN SEAN · director, officer: President & CEO | Sale | 8,978 | $63 |
| Aug 20, 2026 | BRYNJELSEN SEAN · director, officer: President & CEO | Sale | 47,307 | $60 |
| Aug 20, 2026 | BRYNJELSEN SEAN · director, officer: President & CEO | Sale | 36,373 | $61 |
| Aug 4, 2026 | Adams Jennifer McKie · director | A-Award | 10,000 | $0.00 |
| Aug 4, 2026 | CASAMENTO CHARLES J · director | A-Award | 10,000 | $0.00 |
| Aug 4, 2026 | Matthews Judith M. · officer: Chief Financial Officer | A-Award | 32,246 | $0.00 |
| Aug 4, 2026 | Erdogan-Trinkaus Ipek · officer: Chief Commercial Officer | A-Award | 80,000 | $0.00 |
| Aug 4, 2026 | BRYNJELSEN SEAN · director, officer: President & CEO | A-Award | 128,985 | $0.00 |
| Aug 4, 2026 | Krempa David · officer: Chief Business Officer | A-Award | 128,985 | $0.00 |
| Aug 4, 2026 | MAIER PAUL V · director | A-Award | 10,000 | $0.00 |
| Aug 4, 2026 | RIEDEL NORBERT G · director | A-Award | 10,000 | $0.00 |
| Jul 16, 2026 | Opaleye Management Inc. · 10 percent owner | Sale | 15,000 | $38 |
| Jul 16, 2026 | Opaleye Management Inc. · 10 percent owner | Sale | 13,315 | $38 |
| Jul 14, 2026 | BRYNJELSEN SEAN · director, officer: President & CEO | M-Exempt | 27,500 | $0.00 |
| Jul 14, 2026 | BRYNJELSEN SEAN · director, officer: President & CEO | M-Exempt | 200,000 | $1.37 |
| Jul 13, 2026 | Krempa David · officer: Chief Business Officer | M-Exempt | 10,000 | $0.00 |
| Jul 7, 2026 | Opaleye Management Inc. · 10 percent owner | Sale | 20,000 | $38 |
| Jul 7, 2026 | Opaleye Management Inc. · 10 percent owner | Sale | 10,000 | $38 |
| Jul 7, 2026 | Opaleye Management Inc. · 10 percent owner | Sale | 25,000 | $37 |
| Jul 7, 2026 | Opaleye Management Inc. · 10 percent owner | Sale | 65,000 | $37 |
| Jul 7, 2026 | Opaleye Management Inc. · 10 percent owner | Sale | 6,685 | $38 |
| Jun 30, 2026 | Krempa David · officer: Chief Business Officer | A-Award | 10,000 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 85Increased 93Reduced 71Sold out 5
| Filer | Action | Shares | Filed |
|---|---|---|---|
| Opaleye Management Inc. | Unchanged | 2,860,000 | Aug 14, 2026 |
| OPALEYE MANAGEMENT INC. | Reduced | 2,860,000 | May 15, 2026 |
| ECOR1 CAPITAL, LLC | Increased | 2,171,938 | May 15, 2026 |
| EcoR1 Capital, LLC | Unchanged | 2,171,938 | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 1,895,833 | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 1,717,286 | May 13, 2026 |
| NANTAHALA CAPITAL MANAGEMENT, LLC | Unchanged | 1,175,951 | May 15, 2026 |
| Nantahala Capital Management, LLC | Unchanged | 1,175,951 | Aug 19, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 994,089 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 976,570 | Aug 13, 2026 |
| MORGAN STANLEY | Increased | 767,972 | Aug 13, 2026 |
| STATE STREET CORP | Increased | 701,786 | Aug 7, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 652,303 | Aug 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 577,666 | May 15, 2026 |
| STATE STREET CORP | Increased | 530,215 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 31, 2026