Chang Carmen
10% Owner · Korro Bio, Inc.
Every open-market stock purchase Chang Carmen has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. 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
- SGP+22.2% vs price paidSpyGlass Pharma, Inc.
One purchase totalling $15.0M at an average of $16.00 per share; the stock last traded at $19.56. See all insider buying in SGP →
Avg price paid$16.00Latest price$19.56Market cap$651.0M - MBX+260.6% vs price paidMBX Biosciences, Inc.
One purchase totalling $8.0M 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 - KRROKorro Bio, Inc.
2 purchases totalling $3.3M at an average of $14.67 per share. See all insider buying in KRRO →
Avg price paid$14.67Latest price—Market capUnknown
Cluster participation
Qualifying buys grouped with other insiders buying the same stock — the pattern this site exists to catch.
All reported buys
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About this data
Figures are parsed from Chang Carmen's Form 4 filings on SEC EDGAR (CIK 1746342) 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.