StockCIK 1703647

Korro Bio, Inc. (KRRO): Insider Trades and Fund Holdings

In the past 12 months, Korro Bio, Inc. insiders reported 5 open-market purchases worth $964K and 8 sales worth $1.22M; 8 of the sales were reported as made under a 10b5-1 trading plan.

5Insider buys, 12 months

$964KBought by insiders, 12 months

$1.22MSold by insiders, 12 months

1Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 26, 2026.

Recent KRRO insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Oct 26	Oct 22	Lynx1 Capital Management LP10% owner	10% owner (ind.)	▲ BUY	52,175	10.72	$559K	+3.4%	Form 4 ↗
Oct 26	Oct 26	Lynx1 Capital Management LP10% owner	10% owner (ind.)	▲ BUY	25,124	11.75	$295K	+1.6%	Form 4 ↗
Oct 26	Oct 23	Lynx1 Capital Management LP10% owner	10% owner (ind.)	▲ BUY	2,510	12.11	$30K	+0.2%	Form 4 ↗
Sep 15	Sep 14	Jean Francois FormelaDirector	Director (ind.)	▼ SELL10b5-1	38,490	14.12	$543K	−23%	Form 4 ↗
Sep 15	Sep 11	Jean Francois FormelaDirector	Director (ind.)	▼ SELL10b5-1	10,200	13.99	$143K	−6.8%	Form 4 ↗
Sep 14	Sep 11	Oliver DolanPresident	President	▼ SELL10b5-1	5	13.80	$69	+0.0%	Form 4 ↗
Sep 10	Sep 8	Oliver DolanPresident	President	▼ SELL10b5-1	7,347	13.51	$99K	−31%	Form 4 ↗
Sep 10	Sep 9	Oliver DolanPresident	President	▼ SELL10b5-1	6	13.67	$82	+0.0%	Form 4 ↗
Aug 28	Aug 26	Jean Francois FormelaDirector	Director (ind.)	▼ SELL10b5-1	300	13.96	$4K	−0.2%	Form 4 ↗
Aug 21	Aug 19	Jean Francois FormelaDirector	Director (ind.)	▼ SELL10b5-1	28,468	14.00	$399K	−17%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

All 13 KRRO insider trades →

Insiders who traded in the past year

Insider	Role	Buys	Bought	Sells	Sold	Latest
Lynx1 Capital Management LP	10% owner	5	$964K	0	$0	Oct 26, 2026
Jean Francois Formela	Director	0	$0	5	$1.12M	Sep 15, 2026
Oliver Dolan	President	0	$0	3	$99K	Sep 14, 2026

Tracked funds that report KRRO

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Renaissance Technologies	Q2 2026	110,524	$1.46M	0.00%	▼ −18.9%

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →