Adam K. Stern is 10% Owner at Matinas BioPharma Holdings, Inc. (MTNB). They have made 20 open-market trades across 4 companies since 2008, most recently 2026-07-10.
CIK 0001403497
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
18 open-market purchases totalling $540K since 2016, against 2 sales. Across 18 scored buys the stock is up 33.5% at ninety days, and 24.4 points ahead of the S&P over the same stretch.
18 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 44% | 61% | 56% |
| Avg Move | +1.5% | +11.0% | +33.5% |
| Alpha | +0.4% | +7.0% | +24.4% |
| Scored | 18 | 18 | 18 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DRIO | BUY | 2020-09-03 | 2020-09-04 | $6.66 | $4K | +13.6% | +6.7% | -25.0% |
| MTNB | BUY | 2020-08-21 | 2020-08-24 | $0.83 | $17K | -5.5% | -0.9% | +7.6% |
| DRIO | BUY | 2020-08-03 | 2020-08-24 | $6.66 | $4K | +0.0% | +6.7% | -16.4% |
| DRIO | BUY | 2020-07-03 | 2020-07-06 | $6.66 | $4K | -4.6% | +169.7% | +151.7% |
| DRIO | BUY | 2020-06-08 | 2020-06-09 | $5.89 | $15K | +4.5% | +10.6% | +155.5% |
| DRIO | BUY | 2020-06-03 | 2020-06-05 | $6.66 | $4K | +13.3% | +8.6% | +169.5% |
| DRIO | BUY | 2020-05-07 | 2020-05-08 | $6.66 | $4K | -8.1% | -22.7% | +136.1% |
| DRIO | BUY | 2020-04-20 | 2020-04-22 | $6.66 | $4K | +14.0% | +9.2% | +7.9% |
| DRIO | BUY | 2020-03-20 | 2020-03-23 | $3.80 | $55K | +16.8% | +33.4% | +32.8% |
| MTNB | BUY | 2020-03-17 | 2020-03-18 | $0.65 | $7K | +7.7% | +4.7% | +27.8% |
| MTNB | BUY | 2019-08-19 | 2019-08-21 | $0.70 | $7K | -0.5% | -7.9% | +85.6% |
| MTNB | BUY | 2019-06-14 | 2019-06-18 | $0.80 | $12K | +5.8% | -8.0% | -17.9% |
| MTNB | BUY | 2019-06-12 | 2019-06-13 | $0.80 | $16K | -3.2% | +3.1% | -19.3% |
| MTNB | BUY | 2019-06-10 | 2019-06-11 | $0.82 | $12K | +2.0% | +8.6% | -15.8% |
| MTNB | BUY | 2019-06-07 | 2019-06-10 | $0.89 | $18K | +0.0% | +7.3% | -17.8% |
| MTNB | BUY | 2019-05-31 | 2019-06-03 | $0.94 | $75K | -11.7% | -7.4% | -27.5% |
| MTNB | BUY | 2019-05-16 | 2019-05-20 | $0.95 | $143K | -5.9% | -19.0% | -32.8% |
| MTNB | BUY | 2017-09-07 | 2017-09-11 | $1.38 | $138K | -10.7% | -4.2% | +0.0% |
| PBTH | SELL | 2011-04-19 | 2011-04-21 | $5.51 | $2.6M | N/A | N/A | N/A |
| MODG.OB | SELL | 2008-09-26 | 2009-02-13 | $1.20 | $500K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.