Korro Bio, Inc. (KRRO) Insider Trading Activity

NASDAQ$16.83+0.97 (6.12%)
Market Cap
$233.55M
Sector
Healthcare
Industry
Biotechnology
Rank in Sector
27 of 849
Rank in Industry
21 of 491

Largest Insider Buys in Sector

$350M
$217M
$172M
$109M
$107M
$104M

KRRO Insider Trading Activity

KRRO Median Price and Trade Amounts History Chart

Statistics of Insider Transactions

Amount of Insider Buys and Sells

Buys
$21,677,002
15
39
Sells
$7,797,418
23
61

Related Transactions

BASKETT FOREST10 percent owner
1
$2.3M
0
$0
$2.3M
Chang Carmen10 percent owner
1
$2.3M
0
$0
$2.3M
Florence Anthony A. Jr.10 percent owner
1
$2.3M
0
$0
$2.3M
Makhzoumi Mohamad10 percent owner
1
$2.3M
0
$0
$2.3M
Mathers Edward T10 percent owner
1
$2.3M
0
$0
$2.3M
New Enterprise Associates 17, L.P.10 percent owner
1
$2.3M
0
$0
$2.3M
SANDELL SCOTT D10 percent owner
1
$2.3M
0
$0
$2.3M
Walker Paul Edward10 percent owner
1
$2.3M
0
$0
$2.3M
Yang Rick10 percent owner
1
$2.3M
0
$0
$2.3M
Lynx1 Capital Management LP10 percent owner
6
$969,073
0
$0
$969,073
Chappell ToddChief Operating Officer
0
$0
1
$34,309
$-34,309
Vincent Loic AChief Scientific Officer
0
$0
1
$37,017
$-37,017
Cerio JeffreyGeneral Counsel
0
$0
1
$71,575
$-71,575
Dolan OliverSenior Vice President, Finance
0
$0
4
$136,074
$-136,074
Aiyar RamPresident and CEO
0
$0
2
$259,590
$-259,590
FORMELA JEAN FRANCOISdirector
0
$0
14
$7.26M
$-7.26M

About Korro Bio, Inc.

Korro Bio, Inc., a biopharmaceutical firm based in Cambridge, Massachusetts, is dedicated to exploring, advancing, and bringing to market genetic therapeutics. These treatments are formulated through RNA editing technology, aiming to address a wide array of medical conditions, encompassing both uncommon and widespread diseases.

Insider Activity of Korro Bio, Inc.

Over the last 12 months, insiders at Korro Bio, Inc. have bought $21.68M and sold $7.8M worth of Korro Bio, Inc. stock.

On average, over the past 5 years, insiders at Korro Bio, Inc. have bought $15.84M and sold $2.88M worth of stock each year.

Highest buying activity among insiders over the last 12 months: BASKETT FOREST (10 percent owner) — $2.3M. Chang Carmen (10 percent owner) — $2.3M. Florence Anthony A. Jr. (10 percent owner) — $2.3M.

The last purchase of 25,124 shares for transaction amount of $295,091 was made by Lynx1 Capital Management LP (10 percent owner) on 2026‑10‑26.

List of Insider Buy and Sell Transactions, Korro Bio, Inc.

2026-10-26PurchaseLynx1 Capital Management LP10 percent owner
25,124
0.1393%
$11.75
$295,091
+18.61%
2026-10-23PurchaseLynx1 Capital Management LP10 percent owner
2,510
0.0144%
$12.11
$30,386
+18.53%
2026-10-22PurchaseLynx1 Capital Management LP10 percent owner
52,175
0.2634%
$10.72
$559,274
+16.43%
2026-09-14SaleFORMELA JEAN FRANCOISdirector
38,490
0.2222%
$14.12
$543,479
-28.13%
2026-09-11SaleFORMELA JEAN FRANCOISdirector
10,200
0.0586%
$13.99
$142,698
-27.73%
2026-09-11SaleDolan OliverSenior Vice President, Finance
5
<0.0001%
$13.72
$69
-27.73%
2026-09-09SaleDolan OliverSenior Vice President, Finance
6
<0.0001%
$13.60
$82
-22.51%
2026-09-08SaleDolan OliverSenior Vice President, Finance
7,347
0.0417%
$13.51
$99,286
-25.31%
2026-08-26SaleFORMELA JEAN FRANCOISdirector
300
0.0031%
$13.96
$4,188
-18.86%
2026-08-19SaleFORMELA JEAN FRANCOISdirector
28,468
0.287%
$14.00
$398,552
-14.19%
2026-08-11SaleFORMELA JEAN FRANCOISdirector
2,143
0.0226%
$13.96
$29,916
-9.53%
2026-08-10PurchaseLynx1 Capital Management LP10 percent owner
1,462
0.0081%
$13.19
$19,279
-9.97%
2026-08-06PurchaseLynx1 Capital Management LP10 percent owner
5,222
0.0279%
$11.40
$59,530
+0.99%
2026-08-04SaleAiyar RamPresident and CEO
5,802
0.0557%
$10.84
$62,917
+7.31%
2026-07-06SaleFORMELA JEAN FRANCOISdirector
9,323
0.093%
$13.96
$130,149
-14.30%
2026-07-02SaleFORMELA JEAN FRANCOISdirector
100,700
1.0139%
$14.03
$1.41M
-13.68%
2026-06-24SaleFORMELA JEAN FRANCOISdirector
41,345
0.4425%
$14.61
$603,890
-11.11%
2026-06-24SaleFORMELA JEAN FRANCOISdirector
48,438
0.5185%
$14.61
$707,491
-11.11%
2026-06-23SaleFORMELA JEAN FRANCOISdirector
101,579
1.0607%
$14.25
$1.45M
-10.72%
2026-06-23SaleFORMELA JEAN FRANCOISdirector
119,005
1.2427%
$14.25
$1.7M
-10.72%
Total: 50
*Gray background shows transactions not older than one year

Insider Historical Profitability

<0.0001%
Lynx1 Capital Management LP10 percent owner
1624789
11.0338%
$25.77M60
SANDELL SCOTT D10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
BASKETT FOREST10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
Mathers Edward T10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
Walker Paul Edward10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
Florence Anthony A. Jr.10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
Makhzoumi Mohamad10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
Chang Carmen10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
New Enterprise Associates 17, L.P.10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
Yang Rick10 percent owner
1297893
8.8139%
$20.58M20
<0.0001%
Atlas Venture Opportunity Fund II, L.P.10 percent owner
195074
1.3247%
$3.09M10
<0.0001%
*Gray background shows insiders who have made transactions during last year

Historical Insider Profitability vs. Competitors

$22,710,871
107
8.53%
$220.62M
$6,146,922
96
-4.70%
$233.68M
$19,239,249
50
-2.24%
$238.33M
$168,352,523
35
13.58%
$218.79M
$3,668,031
23
2.05%
$243.03M

KRRO Institutional Investors: Active Positions

Increased Positions46+38.98%2M+23.6%
Decreased Positions51-43.22%4M-42.35%
New Positions22New2MNew
Sold Out Positions29Sold Out3MSold Out
Total Postitions113-4.24%8M-18.75%

KRRO Ownership Change vs Market

Institutional Investor Ownership

Top Shareholders
Top Buyers
Top Sellers
New Shareholders
Sold-Out Shareholders
Active Shareholders
Atlas Venture Life Science Advisors, Llc$9,154.0012.64%1.14M00%2025-09-30
Nea Management Company, Llc$8,781.0012.12%1.09M00%2025-09-30
Driehaus Capital Management Llc$5,409.007.47%671,981+91,122+15.69%2025-09-30
Fmr Llc$4,538.006.26%563,681-75,541-11.82%2025-09-30
Point72 Asset Management, L.P.$4,282.005.91%531,969-8,105-1.5%2025-09-30
Cormorant Asset Management, Lp$3,743.005.17%465,00000%2025-09-30
Blackrock, Inc.$3,596.004.96%446,698-15,191-3.29%2025-09-30
Siren, L.L.C.$3,372.004.65%418,83300%2025-09-30
Tcg Crossover Management, Llc$3,351.004.63%416,301+416,301New2025-09-30
Vanguard Group Inc$3,185.004.4%395,659+8,921+2.31%2025-09-30

Financial Ratios

Summary
Comparison with Competitors

Price to Earnings

Price/Earnings to Growth

Price to Sales

Price to Book

Price/Free Cash Flow

Analyst Recommendations

Analyst Price Targets

Company
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