Korro Bio, Inc. (KRRO) insider trading
Korro Bio, Inc. insiders have made 1 open-market purchase worth $885k since Oct 26, 2026, by 1 insider. The latest: Weston Nichols (10% owner) bought $885k, filed Oct 26, 2026, scored 23 out of 100.
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Insider purchases
| Filed | Insider | Stake | Score | Bought | 1 week | 1 month |
|---|---|---|---|---|---|---|
| Oct 26 Form 4 (opens sec.gov) |
Weston Nichols10% owner10% owner · Near 52-week low | +5% stake | 23 | $885k 79,809 at $11.09 |
waiting | waiting |
Insider sales
1 open-market sale on record
| Filed | Insider | Sold |
|---|---|---|
| Sep 15 Form 4 (opens sec.gov) |
Jean Francois FormelaDirector · planned (10b5-1) | $686k 48,690 at $14.09 · 6% of holdings |
Most insider sales are planned in advance or made for personal reasons, so a sale says less than a buy.
Investors with more than 5% of KRRO (13D and 13G)
| Filed | Investor | Kind | Stake |
|---|---|---|---|
| Oct 27 13G/A | BlackRock, Inc. | Passive | 4.9% |
A 13D is filed by an investor who may push for change; a 13G by a passive one.
Insiders who bought KRRO
- Weston Nichols 10% owner
Questions
Are insiders buying KRRO stock?
Yes. In the last 90 days, 1 open-market purchase was filed, worth $885k, against $686k of open-market sales.
Who bought KRRO stock most recently?
Weston Nichols, 10% owner, bought 79,809 shares for $885k (Form 4 (opens sec.gov), filed Oct 26, 2026).
How does InsiderBeacon score an insider buy?
Out of 100, from who bought, how much their stake grew, the size of the trade, whether other insiders bought within ten days, where the price sat in its 52-week range, and whether it was a first or a routine buy. The score is fixed when the filing arrives. The formula and the research behind it.
Insiders are also buying, same industry
Data as of Oct 26, 2026, from SEC EDGAR Form 4 filings: open-market purchases (code P) of $25,000 or more, and open-market sales. Every row links to its filing. Scores summarise what a filing says (how the score works); outcomes are hypothetical, from the first close after the filing, and past results don't predict future ones. Disclaimer