MPM BioVentures 2014 GP LLC
CIK 1765091 · last filed 2025-11-06
MPM BioVentures 2014 GP LLC is a corporate insider who has filed 3 SEC Form 4 insider transactions across 3 companies since 2021. The most recent filing shows the insider sold $1.5M of HOWL on Nov 6, 2025. Across all open-market trades the lifetime net is −$30.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.2M 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.
$2.25M
3
3
-$30.04M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| HOWL | 10%+ Owner | 5,904,720 | $0.38 | $2.25M | -$1.48M | 1 | 2025-11-06 |
| iTeos Therapeutics, Inc. (ITOS) Delisted | 10%+ Owner | 3,569,156 | $10.15 | $36.23M | -$14.69M | 1 | 2021-09-13 |
| Harpoon Therapeutics, Inc. (HARP) Delisted | 10%+ Owner | 3,898,422 | $23.01 | $89.70M | -$13.87M | 1 | 2021-01-22 |
Recent Filings
3 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-11-06 | HOWL | Sell (S) | −1,214,450 | -$1.48M | EDGAR |
| 2021-09-13 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −518,760 | -$14.69M | EDGAR |
| 2021-01-22 | Harpoon Therapeutics, Inc. (HARP) Delisted | Mixed | −1,530,909 | -$13.87M | EDGAR |