MPM BioVentures 2014 LLC
CIK 1765021 · last filed 2025-11-25
MPM BioVentures 2014 LLC is a corporate insider who has filed 11 SEC Form 4 insider transactions across 4 companies since 2019. The most recent filing shows the insider sold $897.8K of HOWL on Nov 25, 2025. Across all open-market trades the lifetime net is −$72.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.0M 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.
$2.00M
4
11
-$72.06M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| HOWL | 10%+ Owner | 5,257,105 | $0.38 | $2.00M | -$3.60M | 3 | 2025-11-25 |
| iTeos Therapeutics, Inc. (ITOS) Delisted | 10%+ Owner | 2,108,594 | $10.15 | $21.40M | -$86.75M | 3 | 2025-05-15 |
| Harpoon Therapeutics, Inc. (HARP) Delisted | 10%+ Owner | 3,221,896 | $23.01 | $74.14M | -$11.72M | 4 | 2021-04-15 |
| Repare Therapeutics Inc. (RPTX) Delisted | 10%+ Owner | 1,801,581 | $2.65 | $4.77M | $30.00M | 1 | 2020-06-25 |
Recent Filings
11 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-11-25 | HOWL | Sell (S) | −978,330 | -$897.8K | EDGAR |
| 2025-11-20 | HOWL | Sell (S) | −800,515 | -$739.6K | EDGAR |
| 2025-11-03 | HOWL | Sell (S) | −1,475,215 | -$1.96M | EDGAR |
| 2025-05-15 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −5,671,719 | -$45.71M | EDGAR |
| 2021-12-07 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −448,479 | -$15.13M | EDGAR |
| 2021-12-02 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −751,671 | -$25.91M | EDGAR |
| 2021-04-15 | Harpoon Therapeutics, Inc. (HARP) Delisted | Sell (S) | −37,328 | -$752.6K | EDGAR |
| 2021-04-13 | Harpoon Therapeutics, Inc. (HARP) Delisted | Sell (S) | −102,368 | -$2.37M | EDGAR |
| 2021-02-12 | Harpoon Therapeutics, Inc. (HARP) Delisted | Sell (S) | −1,647,459 | -$32.95M | EDGAR |
| 2020-06-25 | Repare Therapeutics Inc. (RPTX) Delisted | Mixed | +18,022,632 | $30.00M | EDGAR |