Stocks · Health care · Pharmaceutical Preparations

Korro Bio, Inc.

KRRO Clue Score32
United States Fiscal year ends December CIK 0001703647
10.16
-3.97%
Close, 9 Oct 2026 · USD

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
10.16 on 9 Oct 2026
51 28 5 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $45.71 14 Oct 2025 $45.78 15 Oct 2025 $51.36 16 Oct 2025 $48.60 17 Oct 2025 $42.15 20 Oct 2025 $46.35 21 Oct 2025 $41.44 22 Oct 2025 $40.61 23 Oct 2025 $37.50 24 Oct 2025 $38.09 27 Oct 2025 $39.58 28 Oct 2025 $40.08 29 Oct 2025 $38.79 30 Oct 2025 $36.45 31 Oct 2025 $40.91 3 Nov 2025 $36.82 4 Nov 2025 $33.85 5 Nov 2025 $32.35 6 Nov 2025 $32.57 7 Nov 2025 $33.84 10 Nov 2025 $32.62 11 Nov 2025 $32.80 12 Nov 2025 $31.42 13 Nov 2025 $6.50 14 Nov 2025 $6.07 17 Nov 2025 $6.15 18 Nov 2025 $6.22 19 Nov 2025 $6.41 20 Nov 2025 $5.99 21 Nov 2025 $6.28 24 Nov 2025 $5.90 25 Nov 2025 $5.73 26 Nov 2025 $5.52 28 Nov 2025 $5.70 1 Dec 2025 $5.38 2 Dec 2025 $5.28 3 Dec 2025 $6.04 4 Dec 2025 $6.81 5 Dec 2025 $7.02 8 Dec 2025 $7.54 9 Dec 2025 $7.25 10 Dec 2025 $7.83 11 Dec 2025 $7.90 12 Dec 2025 $8.23 15 Dec 2025 $7.96 16 Dec 2025 $8.22 17 Dec 2025 $7.91 18 Dec 2025 $7.82 19 Dec 2025 $7.88 22 Dec 2025 $8.21 23 Dec 2025 $8.40 24 Dec 2025 $8.41 26 Dec 2025 $8.12 29 Dec 2025 $8.01 30 Dec 2025 $7.90 31 Dec 2025 $8.01 2 Jan 2026 $8.05 5 Jan 2026 $8.00 6 Jan 2026 $8.26 7 Jan 2026 $8.49 8 Jan 2026 $9.15 9 Jan 2026 $9.50 12 Jan 2026 $8.94 13 Jan 2026 $8.99 14 Jan 2026 $9.00 15 Jan 2026 $8.80 16 Jan 2026 $8.78 20 Jan 2026 $8.58 21 Jan 2026 $9.47 22 Jan 2026 $10.51 23 Jan 2026 $10.73 26 Jan 2026 $10.73 27 Jan 2026 $10.74 28 Jan 2026 $11.69 29 Jan 2026 $13.31 30 Jan 2026 $13.33 2 Feb 2026 $13.05 3 Feb 2026 $12.70 4 Feb 2026 $12.26 5 Feb 2026 $11.54 6 Feb 2026 $12.57 9 Feb 2026 $12.72 10 Feb 2026 $12.14 11 Feb 2026 $12.29 12 Feb 2026 $11.76 13 Feb 2026 $11.17 17 Feb 2026 $11.48 18 Feb 2026 $11.24 19 Feb 2026 $11.70 20 Feb 2026 $11.11 23 Feb 2026 $11.28 24 Feb 2026 $11.93 25 Feb 2026 $12.14 26 Feb 2026 $12.10 27 Feb 2026 $12.13 2 Mar 2026 $11.50 3 Mar 2026 $10.75 4 Mar 2026 $11.15 5 Mar 2026 $10.95 6 Mar 2026 $11.18 9 Mar 2026 $12.30 10 Mar 2026 $11.48 11 Mar 2026 $11.76 12 Mar 2026 $11.50 13 Mar 2026 $12.80 16 Mar 2026 $12.60 17 Mar 2026 $12.31 18 Mar 2026 $11.41 19 Mar 2026 $11.06 20 Mar 2026 $10.75 23 Mar 2026 $11.27 24 Mar 2026 $10.58 25 Mar 2026 $10.92 26 Mar 2026 $10.91 27 Mar 2026 $10.40 30 Mar 2026 $10.28 31 Mar 2026 $11.32 1 Apr 2026 $12.65 2 Apr 2026 $14.00 6 Apr 2026 $13.79 7 Apr 2026 $13.91 8 Apr 2026 $13.46 9 Apr 2026 $13.08 10 Apr 2026 $12.68 13 Apr 2026 $13.69 14 Apr 2026 $13.93 15 Apr 2026 $13.68 16 Apr 2026 $13.47 17 Apr 2026 $14.39 20 Apr 2026 $14.28 21 Apr 2026 $13.49 22 Apr 2026 $13.99 23 Apr 2026 $13.60 24 Apr 2026 $12.89 27 Apr 2026 $12.84 28 Apr 2026 $12.80 29 Apr 2026 $12.61 30 Apr 2026 $13.49 1 May 2026 $13.57 4 May 2026 $13.03 5 May 2026 $12.59 6 May 2026 $13.34 7 May 2026 $12.89 8 May 2026 $12.05 11 May 2026 $11.46 12 May 2026 $11.22 13 May 2026 $11.20 14 May 2026 $11.08 15 May 2026 $10.18 18 May 2026 $9.97 19 May 2026 $9.15 20 May 2026 $10.01 21 May 2026 $11.20 22 May 2026 $11.61 26 May 2026 $12.33 27 May 2026 $13.76 28 May 2026 $13.40 29 May 2026 $13.41 1 Jun 2026 $12.93 2 Jun 2026 $11.00 3 Jun 2026 $11.08 4 Jun 2026 $11.18 5 Jun 2026 $10.72 8 Jun 2026 $10.59 9 Jun 2026 $10.94 10 Jun 2026 $10.59 11 Jun 2026 $10.53 12 Jun 2026 $11.61 15 Jun 2026 $11.66 16 Jun 2026 $10.66 17 Jun 2026 $11.05 18 Jun 2026 $12.99 22 Jun 2026 $13.90 23 Jun 2026 $13.71 24 Jun 2026 $13.77 25 Jun 2026 $12.17 26 Jun 2026 $12.70 29 Jun 2026 $13.20 30 Jun 2026 $13.18 1 Jul 2026 $13.65 2 Jul 2026 $14.00 6 Jul 2026 $14.06 7 Jul 2026 $14.49 8 Jul 2026 $14.72 9 Jul 2026 $14.30 10 Jul 2026 $14.56 13 Jul 2026 $13.50 14 Jul 2026 $13.27 15 Jul 2026 $13.03 16 Jul 2026 $12.28 17 Jul 2026 $12.25 20 Jul 2026 $11.50 21 Jul 2026 $11.96 22 Jul 2026 $11.70 23 Jul 2026 $11.53 24 Jul 2026 $10.64 27 Jul 2026 $10.72 28 Jul 2026 $10.50 29 Jul 2026 $10.07 30 Jul 2026 $10.45 31 Jul 2026 $10.37 3 Aug 2026 $10.74 4 Aug 2026 $11.35 5 Aug 2026 $11.50 6 Aug 2026 $12.12 7 Aug 2026 $13.25 10 Aug 2026 $13.49 11 Aug 2026 $13.32 12 Aug 2026 $13.35 13 Aug 2026 $13.29 14 Aug 2026 $13.28 17 Aug 2026 $13.14 18 Aug 2026 $13.22 19 Aug 2026 $13.95 20 Aug 2026 $12.96 21 Aug 2026 $13.18 24 Aug 2026 $13.07 25 Aug 2026 $13.73 26 Aug 2026 $13.68 27 Aug 2026 $13.26 28 Aug 2026 $12.91 31 Aug 2026 $12.49 1 Sep 2026 $12.24 2 Sep 2026 $11.97 3 Sep 2026 $11.62 4 Sep 2026 $12.24 8 Sep 2026 $13.51 9 Sep 2026 $12.93 10 Sep 2026 $13.06 11 Sep 2026 $13.81 14 Sep 2026 $13.88 15 Sep 2026 $14.07 16 Sep 2026 $13.83 17 Sep 2026 $11.80 18 Sep 2026 $10.02 21 Sep 2026 $9.98 22 Sep 2026 $10.34 23 Sep 2026 $9.83 24 Sep 2026 $9.57 25 Sep 2026 $9.57 28 Sep 2026 $9.51 29 Sep 2026 $9.56 30 Sep 2026 $9.91 1 Oct 2026 $9.71 2 Oct 2026 $9.64 5 Oct 2026 $9.97 6 Oct 2026 $9.76 7 Oct 2026 $10.49 8 Oct 2026 $10.58 9 Oct 2026 $10.16 SANDELL SCOTT D 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake New Enterprise Associates 17,… 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake Chang Carmen 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake BASKETT FOREST 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake Mathers Edward T 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake Makhzoumi Mohamad 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake Walker Paul Edward 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake Florence Anthony A. Jr. 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake Yang Rick 10% owner Bought $2.30M 10 Mar 2026 · at $11.11 · 19.0% of stake Lynx1 Capital Management LP 10% owner Bought $5.51K 31 Mar 2026 · at $10.60 · 0.0% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $39.90K 28 May 2026 · at $13.95 · 1.4% of stake Aiyar Ram President and CEO Sold at will $196.67K 29 May 2026 · at $12.98 · 16.8% of stake Chappell Todd Chief Operating Officer Sold at will $34.31K 16 Jun 2026 · at $10.83 · 15.7% of stake Dolan Oliver Senior Vice President, Finance Sold at will $36.64K 16 Jun 2026 · at $10.83 · 15.7% of stake Vincent Loic A Chief Scientific Officer Sold at will $37.02K 16 Jun 2026 · at $10.83 · 15.7% of stake Cerio Jeffrey General Counsel Sold at will $71.58K 16 Jun 2026 · at $10.83 · 15.8% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $55.27K 22 Jun 2026 · at $13.95 · 2.0% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $1.70M 23 Jun 2026 · at $14.25 · 40.3% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $707.49K 24 Jun 2026 · at $14.61 · 22.2% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $1.41M 2 Jul 2026 · at $14.03 · 39.4% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $130.15K 6 Jul 2026 · at $13.96 · 6.0% of stake Aiyar Ram President and CEO Sold at will $62.92K 4 Aug 2026 · at $10.84 · 7.8% of stake Lynx1 Capital Management LP 10% owner Bought $59.53K 6 Aug 2026 · at $11.40 · 0.3% of stake Lynx1 Capital Management LP 10% owner Bought $19.28K 10 Aug 2026 · at $13.19 · 0.1% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $29.92K 11 Aug 2026 · at $13.96 · 1.4% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $398.55K 19 Aug 2026 · at $14.00 · 16.8% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $4.19K 26 Aug 2026 · at $13.96 · 0.2% of stake Dolan Oliver Senior Vice President, Finance Sold on a plan $99.29K 8 Sep 2026 · at $13.51 · 31.1% of stake Dolan Oliver Senior Vice President, Finance Sold on a plan $81.62 9 Sep 2026 · at $13.60 · 0.0% of stake Dolan Oliver Senior Vice President, Finance Sold on a plan $68.58 11 Sep 2026 · at $13.72 · 0.0% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $142.70K 11 Sep 2026 · at $13.99 · 6.8% of stake FORMELA JEAN FRANCOIS Director Sold on a plan $543.48K 14 Sep 2026 · at $14.12 · 22.5% of stake
12 buys6 sales at will14 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Revenue
$6.39M
Net income
$117.26M
Free cash flow
$79.08M
Operating margin
-1,906.4%
Net margin
-1,834.5%
Return on equity
-228.0%
Return on capital
-186.5%
Debt to equity
0.00
Revenue growth, 1 yr
181.5%
Revenue growth, 5 yr
-29.6% a year

Revenue and net income

Fiscal years, as filed with the SEC · point at a year for the detail
37M -27M FY20 Fiscal year 2020 Revenue $36.98M Net income $26.51M Margin -71.7% 14M -85M FY21 Fiscal year 2021 Revenue $14.07M Net income $84.69M Margin -602.0% · growth -62.0% 0K -58M FY22 Fiscal year 2022 Revenue $0.00 Net income $58.03M Margin n/a · growth -100.0% 0K -81M FY23 Fiscal year 2023 Revenue $0.00 Net income $81.17M Margin n/a 2M -84M FY24 Fiscal year 2024 Revenue $2.27M Net income $83.58M Margin -3,680.4% 6M -117M FY25 Fiscal year 2025 Revenue $6.39M Net income $117.26M Margin -1,834.5% · growth +181.5%
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
14 Sep 2026 FORMELA JEAN FRANCOIS
Director
Sold on a plan $543.48K 22.5%
11 Sep 2026 FORMELA JEAN FRANCOIS
Director
Sold on a plan $142.70K 6.8%
11 Sep 2026 Dolan Oliver
Senior Vice President, Finance
Sold on a plan $68.58 0.0%
9 Sep 2026 Dolan Oliver
Senior Vice President, Finance
Sold on a plan $81.62 0.0%
8 Sep 2026 Dolan Oliver
Senior Vice President, Finance
Sold on a plan $99.29K 31.1%
26 Aug 2026 FORMELA JEAN FRANCOIS
Director
Sold on a plan $4.19K 0.2%