SEC Form 4Coverage since May 28, 2026
$KRRO insider trading
Over the last 12 months, Korro Bio insiders reported no purchases and 10 sales totaling $4.5M across SEC Form 4 filings. 40% of the activity was filed under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $4.5M 10 events
- Events · 12m
- 10 Form 4 filings, grouped
- Insiders · 12m
- 6 distinct reporters
- 10b5-1 share
- 40% pre-arranged plans
Side
Price · $KRRO · 12Mvia TradingView
Top insiders · 12m
FORMELA JEAN FRANCOIS—4× · $4.0M
Aiyar RamPresident and CEO2× · $260K
Chappell ToddChief Operating Officer1× · $34K
Dolan OliverSenior Vice President, Finance1× · $37K
Vincent Loic AChief Scientific Officer1× · $37K
All insider trades
10 events
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| 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 |
About Form 4
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. 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.