$KRRO insider trading
Over the last 12 months, Korro Bio insiders reported 11 buys totaling $20.8M and 15 sales totaling $5.0M across SEC Form 4 filings. 35% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- $20.8M 11 events
- Sold · 12m
- $5.0M 15 events
- Events · 12m
- 26 Form 4 filings, grouped
- Insiders · 12m
- 16 distinct reporters
- 10b5-1 share
- 35% of events, not dollars
All insider trades
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | Dolan OliverSenior Vice President, Finance · O | ▼ Sale | 5 | $13.72 | $69 | — | plan |
| Sep 9, 2026 | Dolan OliverSenior Vice President, Finance · O | ▼ Sale | 7,353 | $13.51 | $99K | -31.2% | plan · 2 tranches |
| Aug 26, 2026 | FORMELA JEAN FRANCOISD | ▼ Sale | 300 | $13.96 | $4K | -0.2% | plan · 2 tranches · indirect |
| Aug 19, 2026 | FORMELA JEAN FRANCOISD | ▼ Sale | 28,468 | $14 | $399K | -16.8% | plan · 2 tranches · indirect |
| Aug 11, 2026 | FORMELA JEAN FRANCOISD | ▼ Sale | 2,143 | $13.96 | $30K | -1.4% | plan · 2 tranches · indirect |
| Aug 10, 2026 | Lynx1 Capital Management LP10% | ▲ Buy | 6,684 | $11.79 | $79K | +0.4% | 2 tranches · indirect |
| Aug 4, 2026 | Aiyar RamPresident and CEO · O·D | ▼ Sale | 5,802 | $10.84 | $63K | -7.8% | — |
| Jul 6, 2026 | FORMELA JEAN FRANCOISD | ▼ Sale | 110,023 | $14.02 | $1.5M | -42.9% | plan · 4 tranches · indirect |
| Jun 24, 2026 | FORMELA JEAN FRANCOISD | ▼ Sale | 171,405 | $14.34 | $2.5M | -50.3% | plan · 8 tranches · indirect |
| Jun 16, 2026 | Chappell ToddChief Operating Officer · O | ▼ Sale | 3,168 | $10.83 | $34K | -15.7% | — |
| Jun 16, 2026 | Vincent Loic AChief Scientific Officer · O | ▼ Sale | 3,418 | $10.83 | $37K | -15.7% | — |
| Jun 16, 2026 | Cerio JeffreyGeneral Counsel · O | ▼ Sale | 6,609 | $10.83 | $72K | -15.8% | — |
| Jun 16, 2026 | Dolan OliverSenior Vice President, Finance · O | ▼ Sale | 3,383 | $10.83 | $37K | -15.7% | — |
| May 29, 2026 | Aiyar RamPresident and CEO · O·D | ▼ Sale | 15,152 | $12.98 | $197K | -16.8% | — |
| May 28, 2026 | FORMELA JEAN FRANCOISD | ▼ Sale | 419 | $13.95 | $6K | -0.2% | plan · indirect |
| May 28, 2026 | FORMELA JEAN FRANCOISD | ▼ Sale | 2,441 | $13.95 | $34K | -0.3% | plan · indirect |
| Mar 31, 2026 | Lynx1 Capital Management LP10% | ▲ Buy | 520 | $10.6 | $6K | — | indirect |
| Mar 10, 2026 | Yang Rick10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
| Mar 10, 2026 | SANDELL SCOTT D10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
| Mar 10, 2026 | New Enterprise Associates 17, L.P.10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | — |
| Mar 10, 2026 | Chang Carmen10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
| Mar 10, 2026 | BASKETT FOREST10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
| Mar 10, 2026 | Mathers Edward T10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
| Mar 10, 2026 | Walker Paul Edward10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
| Mar 10, 2026 | Makhzoumi Mohamad10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
| Mar 10, 2026 | Florence Anthony A. Jr.10% | ▲ Buy | 207,100 | $11.11 | $2.3M | +19% | indirect |
Every $KRRO filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? Korro Bio filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $KRRO feed.