Santiago Arroyo is VP at MOMENTA PHARMACEUTICALS INC (MNTA). They have made 15 open-market trades across 2 companies since 2018, most recently 2025-01-02.
CIK 0001706857
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.
0 open-market purchases, against 15 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BCYC | SELL | 2025-01-02 | 2025-01-06 | $14.09 | $139K | -11.0% | -14.1% | -55.0% |
| MNTA | SELL | 2020-08-04 | 2020-08-06 | $32.25 | $2.2M | -5.0% | +60.8% | N/A |
| MNTA | SELL | 2020-07-29 | 2020-07-30 | $30.00 | $1.2M | -6.8% | +74.2% | N/A |
| MNTA | SELL · 10b5-1 | 2020-07-28 | 2020-07-28 | $30.00 | $20K | +12.8% | +78.2% | N/A |
| MNTA | SELL | 2020-07-21 | 2020-07-23 | $34.53 | $3.6M | +5.4% | +70.6% | N/A |
| MNTA | SELL | 2020-07-20 | 2020-07-21 | $33.95 | $106K | -12.6% | +54.4% | N/A |
| MNTA | SELL | 2020-07-15 | 2020-07-16 | $35.35 | $3.6M | -14.9% | -14.4% | N/A |
| MNTA | SELL | 2020-06-30 | 2020-07-01 | $35.10 | $478K | +5.3% | -9.5% | +61.2% |
| MNTA | SELL | 2020-06-12 | 2020-06-15 | $30.16 | $408K | +3.3% | -5.2% | +39.5% |
| MNTA | SELL · 10b5-1 | 2020-04-20 | 2020-04-21 | $28.96 | $47K | -3.6% | +3.2% | +11.7% |
| MNTA | SELL | 2020-03-06 | 2020-03-09 | $28.97 | $426K | -19.9% | -1.6% | +8.6% |
| MNTA | SELL | 2020-02-13 | 2020-02-14 | $30.03 | $462K | -10.9% | -30.8% | -6.2% |
| MNTA | SELL · 10b5-1 | 2020-01-21 | 2020-01-22 | $30.08 | $37K | +3.6% | +19.1% | +7.5% |
| MNTA | SELL | 2019-11-07 | 2019-11-08 | $15.91 | $858K | -5.5% | +9.7% | +90.8% |
| MNTA | SELL | 2019-10-18 | 2019-10-21 | $13.83 | $175K | +6.8% | +6.3% | +99.2% |
| MNTA | SELL · 10b5-1 | 2019-04-29 | 2019-05-01 | $15.00 | $38K | +5.4% | -10.9% | -13.8% |
| MNTA | SELL | 2019-04-09 | 2019-04-11 | $15.00 | $122K | -0.4% | -4.8% | -20.4% |
| MNTA | SELL · 10b5-1 | 2019-02-14 | 2019-02-19 | $13.10 | $35K | +4.4% | +0.4% | -9.0% |
| MNTA | SELL | 2019-02-13 | 2019-02-14 | $12.70 | $197K | +13.2% | +15.1% | +9.7% |
| MNTA | SELL | 2018-06-21 | 2018-06-25 | $22.20 | $59K | +8.4% | +48.9% | +27.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.