MPM BioVentures 2014 GP LLC
CIK 1765091 · last filed 2026-08-31
MPM BioVentures 2014 GP LLC is a corporate insider who has filed 5 SEC Form 4 insider transactions across 4 companies since 2021. The most recent filing shows the insider sold $6.2M of TRDA on Aug 31, 2026. Across all open-market trades the lifetime net is −$40.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $36.1M across reported positions. The firm reports its address in Boston, MA. 54 SEC filings were submitted jointly with MPM Asset Management Investors BV2014 LLC.
"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.
$36.12M
4
5
-$40.81M
Filer Profile
SUITE 1100
BOSTON, MA 02116
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TRDA | 10%+ Owner | 4,279,426 | $7.11 | $30.43M | -$10.77M | 2 | 2026-08-31 |
| HOWL | 10%+ Owner | 5,904,720 | $0.96 | $5.70M | -$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 | 389,842 | $23.01 | $8.97M | -$13.87M | 1 | 2021-01-22 |
Recent Filings
5 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-31 | TRDA | Sell (S) | −869,140 | -$6.16M | EDGAR |
| 2026-08-26 | TRDA | Sell (S) | −627,140 | -$4.62M | EDGAR |
| 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 |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.