Amit Munshi is CEO & President at ARENA PHARMACEUTICALS INC (ARNA). They have made 21 open-market trades across 4 companies since 2015, most recently 2026-06-05.
CIK 0001612551
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.
13 open-market purchases totalling $3.0M since 2015, against 8 sales. Across 8 scored buys the stock is up 28.5% at ninety days, and 23.4 points ahead of the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 88% | 63% | 88% |
| Avg Move | +8.2% | +14.5% | +28.5% |
| Alpha | +7.0% | +12.4% | +23.4% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IKT | BUY | 2024-10-21 | 2024-10-23 | $1.37 | $1.0M | +0.8% | -10.8% | +8.5% |
| ZURA | BUY | 2024-04-22 | 2024-04-24 | $3.13 | $500K | +33.6% | +56.4% | +9.4% |
| ZURA | BUY | 2023-06-05 | 2023-06-05 | $4.25 | $1000K | +7.3% | -3.3% | -9.2% |
| ARNA | BUY | 2021-08-16 | 2021-08-17 | $48.19 | $48K | +9.2% | +24.9% | +22.6% |
| ARNA | BUY | 2021-08-12 | 2021-08-13 | $50.41 | $50K | +6.7% | +23.9% | +23.9% |
| ARNA | BUY | 2021-08-10 | 2021-08-11 | $52.92 | $53K | +0.6% | +16.7% | +18.1% |
| ARNA | SELL | 2021-01-15 | 2021-01-20 | $80.19 | $8.0M | -5.4% | -0.4% | -18.0% |
| ARNA | SELL | 2021-01-12 | 2021-01-14 | $75.21 | $2.1M | -6.7% | +4.1% | -15.4% |
| ARNA | SELL | 2020-12-08 | 2020-12-09 | $70.00 | $456K | +6.1% | +11.5% | +9.0% |
| ARNA | SELL | 2020-08-28 | 2020-08-31 | $70.07 | $10.5M | -9.3% | +6.9% | -5.9% |
| ARNA | SELL | 2020-06-02 | 2020-06-04 | $67.36 | $10.1M | -4.6% | -3.6% | +2.7% |
| ARNA | SELL | 2020-05-21 | 2020-05-22 | $56.82 | $6.8M | +8.9% | +8.5% | +13.2% |
| ARNA | SELL | 2020-02-13 | 2020-02-14 | $55.00 | $836K | -18.2% | -32.6% | -16.0% |
| ARNA | SELL | 2020-02-05 | 2020-02-07 | $50.00 | $356K | +4.0% | -16.0% | -2.6% |
| ARNA | BUY | 2017-05-12 | 2017-05-15 | $1.19 | $30K | +14.3% | +13.4% | +79.7% |
| ARNA | BUY | 2017-04-26 | 2017-04-27 | $1.41 | $71K | -7.2% | -5.0% | +75.3% |
| EPRS | BUY | 2015-12-16 | 2015-12-17 | $2.80 | $23K | N/A | N/A | N/A |
| EPRS | BUY | 2015-12-15 | 2015-12-16 | $2.87 | $23K | N/A | N/A | N/A |
| EPRS | BUY | 2015-12-09 | 2015-12-10 | $4.07 | $54K | N/A | N/A | N/A |
| EPRS | BUY | 2015-09-21 | 2015-09-22 | $6.19 | $62K | N/A | N/A | N/A |
| EPRS | BUY | 2015-09-18 | 2015-09-21 | $5.99 | $60K | 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.