Sara Bonstein
CIK 1604019 · Chief Financial Officer · last filed 2026-06-05
Sara Bonstein is a Chief Financial Officer who has filed 105 SEC Form 4 insider transactions across 6 companies since 2014. The most recent filing shows the insider sold $245.9K of INSM on Jun 5, 2026. Across all open-market trades the lifetime net is −$44.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $6.8M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$6.76M
6
105
-$44.39M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| INSM | Chief Financial Officer | 69,082 | $97.85 | $6.76M | -$44.19M | 33 | 2026-06-05 |
| scPharmaceuticals Inc. (SCPH) Delisted | Director | — | $5.67 | — | $0 | 7 | 2025-10-07 |
| XLO | Director | — | $8.31 | — | $0 | 4 | 2025-06-12 |
| ONCOSEC MEDICAL Inc (ONCS) Delisted | CFO/COO | 41,389 | $0.28 | $11.5K | -$5.0K | 8 | 2020-01-21 |
| Ayala Pharmaceuticals, Inc. (ADXSW) Delisted | Chief Financial Officer | 226,670 | — | — | -$110.7K | 21 | 2018-04-03 |
| Ayala Pharmaceuticals, Inc. (ADXS.W) Delisted | Chief Financial Officer | 81,577 | — | — | -$83.9K | 32 | 2016-10-04 |
Recent Filings
105 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-05 | INSM | Sell (S) | −2,404 | -$245.9K | EDGAR |
| 2026-05-15 | INSM | Sell (S) | −8,272 | -$961.0K | EDGAR |
| 2026-02-04 | INSM | Sell (S) | −748 | -$116.9K | EDGAR |
| 2026-01-08 | INSM | Sell (S) | −4,642 | -$808.7K | EDGAR |
| 2026-01-06 | INSM | Grant (A) | +11,643 | $0 | EDGAR |
| 2025-10-07 | scPharmaceuticals Inc. (SCPH) Delisted | Disp (D) | — | $0 | EDGAR |
| 2025-07-23 | INSM | Mixed | −10,512 | -$4.53M | EDGAR |
| 2025-07-09 | INSM | Mixed | −9,876 | -$4.32M | EDGAR |
| 2025-06-25 | INSM | Mixed | −9,876 | -$4.96M | EDGAR |
| 2025-06-12 | INSM | Mixed | −9,876 | -$4.29M | EDGAR |