Sara Bonstein is CFO at INSMED Inc (INSM). They have made 21 open-market trades across 3 companies since 2016, most recently 2026-06-03.
CIK 0001604019
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 21 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| INSM | 69,082 | $6.7M |
| ADXS | 226,670 | $54K |
| ONCS | 41,389 | $11K |
| Total | $6.7M |
Shares reported on the most recent Form 4, priced at the 2026-06-05 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 |
|---|---|---|---|---|---|---|---|---|
| INSM | SELL | 2026-06-03 | 2026-06-05 | $102.27 | $246K | +5.8% | +19.9% | +36.2% |
| INSM | SELL | 2026-05-13 | 2026-05-15 | $116.18 | $961K | +0.9% | -9.3% | +17.5% |
| INSM | SELL | 2026-02-03 | 2026-02-04 | $156.34 | $117K | -1.3% | -8.1% | -8.5% |
| INSM | SELL | 2026-01-06 | 2026-01-08 | $174.22 | $809K | -15.5% | -19.2% | -13.4% |
| INSM | SELL · 10b5-1 | 2025-07-21 | 2025-07-23 | $102.67 | $12.0M | +6.9% | +26.7% | +58.8% |
| INSM | SELL · 10b5-1 | 2025-07-07 | 2025-07-09 | $95.86 | $11.1M | +6.5% | +13.5% | +68.1% |
| INSM | SELL · 10b5-1 | 2025-06-23 | 2025-06-25 | $101.78 | $11.8M | -9.0% | -1.7% | +37.5% |
| INSM | SELL · 10b5-1 | 2025-06-10 | 2025-06-12 | $89.12 | $10.3M | +8.7% | +5.6% | +51.3% |
| INSM | SELL | 2025-06-03 | 2025-06-04 | $71.50 | $226K | +38.2% | +31.9% | +97.7% |
| INSM | SELL | 2025-05-13 | 2025-05-15 | $67.47 | $1.4M | -1.7% | +50.4% | +81.9% |
| INSM | SELL · 10b5-1 | 2025-02-18 | 2025-02-20 | $80.29 | $2.9M | -8.6% | -6.0% | -21.8% |
| INSM | SELL · 10b5-1 | 2025-02-11 | 2025-02-13 | $80.00 | $1.5M | -0.5% | -0.9% | -16.4% |
| INSM | SELL | 2025-02-06 | 2025-02-07 | $80.90 | $2.3M | +4.6% | -8.6% | -17.9% |
| INSM | SELL | 2025-01-07 | 2025-01-10 | $65.33 | $557K | +20.6% | +21.1% | +0.4% |
| INSM | SELL · 10b5-1 | 2024-05-28 | 2024-05-30 | $50.00 | $13.1M | +8.6% | +16.4% | +34.3% |
| INSM | SELL | 2024-05-14 | 2024-05-15 | $25.32 | $561K | +94.0% | +158.1% | +208.4% |
| INSM | SELL | 2024-01-09 | 2024-01-11 | $29.18 | $262K | -4.3% | -2.9% | -0.8% |
| INSM | SELL · 10b5-1 | 2023-12-22 | 2023-12-22 | $30.00 | $396K | -3.3% | -6.0% | -13.2% |
| INSM | SELL | 2023-05-15 | 2023-05-17 | $18.95 | $72K | -0.2% | +6.8% | +20.2% |
| INSM | SELL | 2023-01-10 | 2023-01-12 | $18.12 | $104K | +12.2% | +3.0% | -13.7% |
| INSM | SELL | 2022-05-16 | 2022-05-18 | $18.51 | $27K | -3.6% | -4.8% | +35.7% |
| INSM | SELL | 2022-01-11 | 2022-01-13 | $25.11 | $29K | -7.9% | -1.2% | +10.4% |
| ONCS | SELL | 2020-01-16 | 2020-01-21 | $2.08 | $3K | -3.9% | -10.8% | -23.5% |
| ONCS | SELL | 2019-10-16 | 2019-10-18 | $2.01 | $2K | -4.5% | -13.8% | -7.1% |
| ADXS | SELL | 2018-01-03 | 2018-01-03 | $3.18 | $17K | -10.4% | -11.0% | -50.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.