Melvin Sharoky M.D. is Director at INSMED INC (INSM). They have made 22 open-market trades across 2 companies since 2008, most recently 2026-08-17.
CIK 0001182633
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.
10 open-market purchases totalling $3.2M since 2008, against 12 sales. Across 9 scored buys the stock is up 13.5% at ninety days, and 11.2 points ahead of the S&P over the same stretch.
9 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| INSM | 246,081 | $23.7M |
| ADRX | 5,000 | $88K |
| PRX | 9,390 | — |
| Total | $23.8M |
Shares reported on the most recent Form 4, priced at the 2026-05-15 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 33% | 22% | 44% |
| Avg Move | -6.6% | -1.0% | +13.5% |
| Alpha | -3.8% | -1.8% | +11.2% |
| Scored | 9 | 9 | 9 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| INSM | SELL | 2026-08-17 | 2026-08-19 | $127.53 | $638K | -5.9% | -7.3% | — |
| INSM | SELL | 2025-12-05 | 2025-12-09 | $205.01 | $4.1M | -10.3% | -12.6% | -26.6% |
| INSM | SELL | 2025-09-12 | 2025-09-15 | $145.39 | $2.9M | -5.1% | +14.4% | +37.8% |
| INSM | SELL | 2025-08-20 | 2025-08-21 | $129.50 | $1.3M | +8.5% | +9.6% | +53.9% |
| INSM | SELL | 2025-08-12 | 2025-08-14 | $121.58 | $1.2M | +3.6% | +12.2% | +52.3% |
| INSM | BUY | 2023-05-15 | 2023-05-17 | $19.29 | $193K | -0.2% | +6.8% | +20.2% |
| INSM | BUY | 2022-10-31 | 2022-11-02 | $17.59 | $528K | +4.2% | +11.9% | +18.2% |
| INSM | BUY | 2022-05-11 | 2022-05-13 | $17.20 | $344K | +4.7% | -5.6% | +45.3% |
| INSM | SELL | 2020-11-20 | 2020-11-24 | $39.05 | $312K | -0.9% | -10.6% | +2.4% |
| INSM | SELL | 2020-11-19 | 2020-11-20 | $39.48 | $158K | +0.6% | -6.0% | +2.9% |
| INSM | SELL | 2020-09-14 | 2020-09-16 | $30.68 | $614K | -3.2% | +6.5% | +19.0% |
| INSM | BUY | 2018-11-09 | 2018-11-13 | $15.88 | $457K | +10.2% | -8.5% | +51.3% |
| INSM | SELL | 2017-09-06 | 2017-09-07 | $25.84 | $646K | -5.6% | +1.5% | -7.0% |
| INSM | SELL | 2017-09-05 | 2017-09-07 | $27.37 | $1.4M | -5.6% | +1.5% | -7.0% |
| INSM | SELL | 2017-09-05 | 2017-09-07 | $28.87 | $477K | -5.6% | +1.5% | -7.0% |
| INSM | BUY | 2014-08-13 | 2014-08-14 | $11.25 | $1.0M | -15.6% | -2.7% | -2.7% |
| INSM | BUY | 2012-06-14 | 2012-06-15 | $3.00 | $60K | -15.6% | -2.7% | -2.7% |
| INSM | BUY | 2011-04-11 | 2011-04-13 | $7.63 | $132K | -15.6% | -2.7% | -2.7% |
| INSM | BUY | 2011-04-08 | 2011-04-11 | $7.64 | $56K | -15.6% | -2.7% | -2.7% |
| PRX | SELL | 2010-04-15 | 2010-04-16 | $27.46 | $549K | N/A | N/A | N/A |
| PRX | BUY | 2008-03-05 | 2008-03-07 | $17.31 | $346K | N/A | N/A | N/A |
| INSM | BUY | 2008-01-10 | 2008-01-14 | $0.80 | $56K | -15.6% | -2.7% | -2.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.