ORBIMED ADVISORS LLC
Director, 10% Owner · Q32 Bio Inc.
Every open-market stock purchase ORBIMED ADVISORS LLC has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. Insiders sell for many reasons, but they buy with their own money for one — this page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.
Where the buys stand today
- QTTBQ32 Bio Inc.
2 purchases totalling $15.0M at an average of $8.00 per share. See all insider buying in QTTB →
Avg price paid$8.00Latest price—Market cap$215.7M - UPBUpstream Bio, Inc.
2 purchases totalling $14.0M at an average of $17.00 per share. See all insider buying in UPB →
Avg price paid$17.00Latest price—Market cap$396.2M - PRLD+12.4% vs price paidPrelude Therapeutics Inc
2 purchases totalling $12.5M at an average of $4.44 per share; the stock last traded at $4.99. See all insider buying in PRLD →
Avg price paid$4.44Latest price$4.99Market cap$494.9M - MBX+260.6% vs price paidMBX Biosciences, Inc.
2 purchases totalling $12.0M at an average of $16.00 per share; the stock last traded at $57.70. See all insider buying in MBX →
Avg price paid$16.00Latest price$57.70Market cap$2.8B - ACETAdicet Bio, Inc.
2 purchases totalling $5.0M at an average of $1.00 per share. See all insider buying in ACET →
Avg price paid$1.00Latest price—Market capUnknown - TRAWTraws Pharma, Inc.
One purchase totalling $998.2K at an average of $1.67 per share. See all insider buying in TRAW →
Avg price paid$1.67Latest price—Market capUnknown
Cluster participation
Buys that landed within days of other insiders buying the same stock — the pattern this site exists to catch.
All reported buys
| Date | Ticker | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| May 28, 2026 | QTTBcluster | 1,250,000 | $8.00 | $10.0M | SEC ↗ |
| May 28, 2026 | QTTBcluster | 625,000 | $8.00 | $5.0M | SEC ↗ |
| Apr 21, 2026 | PRLDcluster | 1,126,126 | $4.44 | $5.0M | SEC ↗ |
| Apr 21, 2026 | PRLDcluster | 1,689,189 | $4.44 | $7.5M | SEC ↗ |
| Apr 16, 2026 | 597,729 | $1.67 | $998.2K | SEC ↗ | |
| Oct 8, 2025 | 3,500,000 | $1.00 | $3.5M | SEC ↗ | |
| Oct 8, 2025 | 1,500,000 | $1.00 | $1.5M | SEC ↗ | |
| Oct 15, 2024 | UPBcluster | 660,000 | $17.00 | $11.2M | SEC ↗ |
| Oct 15, 2024 | UPBcluster | 165,000 | $17.00 | $2.8M | SEC ↗ |
| Sep 16, 2024 | MBXcluster | 500,000 | $16.00 | $8.0M | SEC ↗ |
| Sep 16, 2024 | MBXcluster | 250,000 | $16.00 | $4.0M | SEC ↗ |
Get alerted the next time ORBIMED ADVISORS LLC — or any insider — buys
We watch every Form 4 as it hits SEC EDGAR and alert you when insiders cluster into the same stock.
About this data
Figures are parsed from ORBIMED ADVISORS LLC's Form 4 filings on SEC EDGAR (CIK 1055951) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.
This page is informational and reflects public filing data. It is not investment advice.