Carmen Chang insider trades: Korro Bio (KRRO) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Carmen reports to the SEC
and 8 more companies
Open-market buys and sales
27 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 10, 2026 | KRRO | ↑ Buy | 207,100 | $11.11 | $2.3M | See Note 2 | Mar 12, 2026 (2d) |
| Oct 2, 2025 | NEUE | ↓ Sell | 3,355 | $6.75 | $23K | See Note 5 | Oct 6, 2025 (4d) |
| Oct 2, 2025 | NEUE | ↓ Sell | 280 | $6.75 | $2K | See Note 4 | Oct 6, 2025 (4d) |
| Oct 2, 2025 | NEUE | ↓ Sell | 280 | $6.75 | $2K | See Note 1 | Oct 6, 2025 (4d) |
| Dec 23, 2024 | MRKR | ↑ Buy | 554,250 | $3.20 | $1.8M | Direct | Dec 23, 2024 (0d) |
| Sep 16, 2024 | MBX | ↑ Buy | 500,000 | $16.00 | $8.0M | See Note 2 | Sep 17, 2024 (1d) |
| Apr 22, 2024 | KRRO | ↑ Buy | 17,857 | $56.00 | $1000K | See Note 2 | Apr 24, 2024 (2d) |
| Jul 17, 2023 | SVRA | ↑ Buy | 333,333 | $3.00 | $1000K | See Note 2 | Jul 19, 2023 (2d) |
| Mar 15, 2023 | COUR | ↓ Sell | 1,226 | $11.82 | $14K | Direct | Mar 17, 2023 (2d) |
| May 25, 2022 | GNCA | ↓ Sell | 10,376,936 | $0.07 | $751K | See Note 2 | May 26, 2022 (1d) |
| Apr 11, 2022 | TRVI | ↑ Buy | 2,631,578 | $1.90 | $5.0M | See Note 2 | Apr 13, 2022 (2d) |
| Apr 11, 2022 | TRVI | ↑ Buy | 948,948 | $1.90 | $1.8M | See Note 3 | Apr 13, 2022 (2d) |
| Dec 22, 2021 | MTCR | ↓ Sell | 497,270 | $0.99 | $494K | See Note 1 | Dec 27, 2021 (5d) |
| Jun 28, 2021 | BHG | ↑ Buy | 1,694,444 | $18.00 | $30.5M | See Note 3 | Jun 30, 2021 (2d) |
| Jun 28, 2021 | GLUE | ↑ Buy | 1,050,000 | $19.00 | $19.9M | See Note 2 | Jun 30, 2021 (2d) |
| Jun 28, 2021 | BHG | ↑ Buy | 250,000 | $18.00 | $4.5M | See Note 2 | Jun 30, 2021 (2d) |
| Mar 16, 2021 | MRKR | ↑ Buy | 5,714,285 | $1.75 | $10.0M | See Note 1 | Mar 18, 2021 (2d) |
| Dec 4, 2020 | RGLS | ↑ Buy | 4,398,602 | $0.62 | $2.7M | See Note 2 | Dec 7, 2020 (3d) |
| Sep 18, 2020 | MTCR | ↑ Buy | 769,230 | $13.00 | $10.0M | Indirect | Sep 22, 2020 (4d) |
| Jul 24, 2020 | GNCA | ↑ Buy | 3,151,260 | $2.25 | $7.1M | See Note 2 | Jul 28, 2020 (4d) |
| Jun 30, 2020 | AKUS | ↑ Buy | 588,235 | $17.00 | $10.0M | See Note 2 | Jul 1, 2020 (1d) |
| Apr 3, 2020 | TRVI | ↓ Sell | 564 | $2.66 | $2K | See Note 1 | Apr 13, 2020 (10d) |
| Jul 22, 2019 | MIRM | ↑ Buy | 450,000 | $15.00 | $6.8M | See Note 2 | Jul 24, 2019 (2d) |
| Jun 24, 2019 | GNCA | ↑ Buy | 2,857,142 | $3.50 | $10.0M | See Note 2 | Jun 25, 2019 (1d) |
| May 9, 2019 | TRVI | ↑ Buy | 2,500,000 | $10.00 | $25.0M | See Note 2 | May 13, 2019 (4d) |
| May 7, 2019 | RGLS | ↑ Buy | 1,136,704 | $1.08 | $1.2M | See Note 2 | May 9, 2019 (2d) |
| Feb 14, 2019 | GNCA | ↑ Buy | 9,948,269 | $0.47 | $4.7M | See Note 2 | Feb 19, 2019 (5d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other KRRO insiders
Open-market trades in the last 12 months
About Carmen Chang's insider trades
Carmen Chang is an insider at Korro Bio (KRRO). Since Feb 14, 2019, Carmen has reported 20 open-market purchases worth $163.3M and 7 sales worth $1.3M on SEC Form 4. In the last 12 months: 1 buy ($2.3M).
Their filings also include other transactions (19 filings), grants and awards (7 filings), conversions (7 filings), option exercises (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every KRRO insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.