CLGN: CollPlant Biotechnologies Ltd. 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 |
|---|---|---|---|---|---|
| 2026-10-08 | New 13G stake | Ami Sagy | 5.70% | SEC | |
| 2026-10-08 | 13D amendment | Ami Sagy | 5.70% | SEC | |
| 2026-08-21 | 13D stake cut | Loewenbaum Lilian S. | 17.50% | -7.50 pts | SEC |
| 2026-07-31 | 13D stake raised | Loewenbaum Lilian S. | 25.00% | +14.80 pts | SEC |
| 2026-07-27 | 13D amendment | Loewenbaum Lilian S. | 10.20% | SEC |
Get new insider and activist filings the morning after: daily alerts. Not investment advice.