MPM BioVentures 2018 GP LLC
CIK 1818701 · last filed 2026-09-09
MPM BioVentures 2018 GP LLC is a corporate insider who has filed 14 SEC Form 4 insider transactions across 2 companies since 2020. The most recent filing shows the insider sold $5.7M of TRDA on Sep 9, 2026. Across all open-market trades the lifetime net is −$57.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $19.5M across reported positions. The firm reports its address in Boston, MA. 30 SEC filings were submitted jointly with MPM BIOVENTURES 2018, L.P.
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
ITOS price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
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 | 4,106,452 | $4.75 | $19.51M | -$8.95M | 3 | 2026-09-09 |
| iTeos Therapeutics, Inc. (ITOS) Delisted | 10%+ Owner | 2,108,594 | $10.15 | $21.40M | -$48.31M | 11 | 2025-05-15 |
Recent Filings
14 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-09 | TRDA | Sell (S) | −779,511 | -$5.72M | EDGAR |
| 2026-08-31 | TRDA | Sell (S) | −260,742 | -$1.85M | EDGAR |
| 2026-08-26 | TRDA | Sell (S) | −188,142 | -$1.38M | EDGAR |
| 2025-05-15 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −1,890,573 | -$15.24M | EDGAR |
| 2022-01-06 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −440,055 | -$18.74M | EDGAR |
| 2021-10-14 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −170,310 | -$4.63M | EDGAR |
| 2021-10-12 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −155,979 | -$4.25M | EDGAR |
| 2021-10-05 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −82,698 | -$2.24M | EDGAR |
| 2021-09-30 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −64,518 | -$1.74M | EDGAR |
| 2021-09-27 | iTeos Therapeutics, Inc. (ITOS) Delisted | Sell (S) | −160,404 | -$4.45M | 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.