GRI: GRI Bio, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-13 | Fell below 5% | Mitchell P. Kopin | 4.99% | SEC |
Institutional ownership (Q2 2026)
11 institutions reported holding $115K of GRI Bio, Inc. on Form 13F (6 the quarter before). 6 opened a new position and 1 sold out. Shares held by institutions: +231%.
| Largest holders | Shares | Value |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 21,368 | $38K |
| GEODE CAPITAL MANAGEMENT, LLC | 13,869 | $25K |
| CITADEL ADVISORS LLC | 13,376 | $24K |
| MORGAN STANLEY | 8,737 | $15K |
| UBS Group AG | 4,920 | $9K |
| Tower Research Capital LLC (TRC) | 2,434 | $4K |
| BARCLAYS PLC | 83 | $147 |
| HRT FINANCIAL LP | 28,784 | $50 |
| BlackRock, Inc. | 7 | $12 |
| Caitong International Asset Management Co., Ltd | 2 | $4 |
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