Matinas BioPharma Holdings
MTNB · NYSE American
$1.70+$0.04 (+2.41%)TodayMarket closed ·
Prev close $1.66
Who owns MTNB
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 27.2% of MTNB’s shares.
- Hezbay Holdings LLC9.5%
- Stern (Adam K.)9.0%
- Lazar (David Elliot)4.0%
- Sanitam Partners LLC1.5%
- Next 6 largest institutions3.1%
- All other shareholders72.8%
| Holder | Shares | % of shares |
|---|---|---|
| Hezbay Holdings LLC | 1.31M | 9.54% |
| Stern (Adam K.) | 1.23M | 9.00% |
| Lazar (David Elliot) | 545.00K | 3.98% |
| Sanitam Partners LLC | 210.69K | 1.54% |
| 111 Equity Group LLC | 183.64K | 1.34% |
| Renaissance Technologies LLC | 71.04K | 0.52% |
| BlackRock Institutional Trust Company, N.A. | 49.65K | 0.36% |
| Geode Capital Management, L.L.C. | 49.13K | 0.36% |
| Vanguard Capital Management, LLC | 40.11K | 0.29% |
| Holos Integrated Wealth LLC | 32.48K | 0.24% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Extended Market Index Fund | 40.11K | 0.29% |
| Fidelity Extended Market Index Fund | 32.98K | 0.24% |
| Fidelity Total Market Index Fund | 7.65K | 0.06% |
| Fidelity Series Total Market Index Fund | 6.12K | 0.04% |
| Vanguard US Equity Index Fund | 1.34K | 0.01% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of MTNB in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| STERN ADAM K | Other | 141.46K | $49.51K |
| STERN ADAM K | Award | 344.71K | $120.65K |
| STERN ADAM K | Option exercise | 344.71K | $120.65K |
| STERN ADAM K | Award | 630.34K | $220.62K |
| STERN ADAM K | Option exercise | 630.34K | $220.62K |
| STERN ADAM K | Option exercise | 630.34K | $220.62K |
| STERN ADAM K | Option exercise | 344.71K | $120.65K |
| Sanitam Partners LLC | Other | 4.80M | $3.09M |
| Sanitam Partners LLC | Other | 1.41K | $824 |
Short interest
Settled Sep 30, 2026
- Shares short
- 56.16K
- Days to cover
- 1.00
- % of shares outstanding
- 0.41%
- Average daily volume
- 119.02K
- Change since last report
- −87.3%
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