Anthony M. Manning is CSO at MOMENTA PHARMACEUTICALS INC (MNTA). They have made 18 open-market trades across 2 companies since 2018, most recently 2026-06-29.
CIK 0001716468
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 18 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MNTA | 13,141 | $690K |
| PTN | 36,080 | $217K |
| GLUE | 10,000 | $98K |
| Total | $1.0M |
Shares reported on the most recent Form 4, priced at the 2026-06-30 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GLUE | SELL | 2026-06-29 | 2026-06-30 | $23.11 | $231K | -9.8% | -7.0% | -51.9% |
| GLUE | SELL | 2026-05-21 | 2026-05-22 | $18.01 | $180K | -9.2% | -2.5% | -22.9% |
| MNTA | SELL · 10b5-1 | 2020-08-13 | 2020-08-13 | $29.31 | $12K | +74.5% | +74.1% | N/A |
| MNTA | SELL · 10b5-1 | 2020-08-10 | 2020-08-11 | $32.36 | $11K | +87.7% | +87.0% | N/A |
| MNTA | SELL | 2020-07-21 | 2020-07-23 | $34.69 | $128K | +5.4% | +70.6% | N/A |
| MNTA | SELL | 2020-07-20 | 2020-07-21 | $33.91 | $3.5M | -12.6% | +54.4% | 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 | $30.15 | $407K | +3.3% | -5.2% | +39.5% |
| MNTA | SELL · 10b5-1 | 2020-05-11 | 2020-05-12 | $33.75 | $14K | +3.4% | -3.3% | -9.8% |
| MNTA | SELL · 10b5-1 | 2020-05-08 | 2020-05-11 | $33.30 | $11K | -6.8% | -5.0% | -17.1% |
| MNTA | SELL | 2020-04-21 | 2020-04-22 | $30.55 | $115K | +1.5% | +5.0% | +9.0% |
| 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 | $29.00 | $212K | -19.9% | -1.6% | +8.6% |
| MNTA | SELL | 2020-02-18 | 2020-02-20 | $32.56 | $1.1M | -8.9% | -27.8% | -6.5% |
| MNTA | SELL | 2020-02-12 | 2020-02-14 | $30.10 | $538K | -10.9% | -30.8% | -6.2% |
| MNTA | SELL · 10b5-1 | 2020-02-11 | 2020-02-12 | $32.23 | $4K | +2.5% | -4.7% | +6.0% |
| MNTA | SELL · 10b5-1 | 2020-02-10 | 2020-02-11 | $31.50 | $7K | +0.7% | -23.1% | +8.4% |
| MNTA | SELL | 2020-01-22 | 2020-01-24 | $29.01 | $125K | +13.0% | +16.7% | +13.4% |
| MNTA | SELL · 10b5-1 | 2020-01-21 | 2020-01-22 | $30.08 | $37K | +3.6% | +19.1% | +7.5% |
| MNTA | SELL | 2020-01-15 | 2020-01-17 | $28.44 | $1.7M | -0.9% | +9.1% | -7.4% |
| MNTA | SELL | 2019-12-24 | 2019-12-27 | $20.00 | $1.0M | -4.7% | +40.6% | +38.3% |
| MNTA | SELL · 10b5-1 | 2019-11-13 | 2019-11-14 | $16.53 | $10K | +5.3% | +9.9% | +95.3% |
| MNTA | SELL · 10b5-1 | 2019-11-12 | 2019-11-13 | $16.18 | $3K | +0.7% | +1.8% | +93.2% |
| MNTA | SELL | 2019-11-07 | 2019-11-12 | $15.96 | $274K | -5.6% | +2.9% | +94.7% |
| MNTA | SELL | 2019-10-18 | 2019-10-21 | $13.83 | $176K | +6.8% | +6.3% | +99.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.