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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
Alert on the numbers Alert on insider trades
Price $10.16 −34.37% Close, 9 Oct 2026

Closing prices at the end of each trading day, from 6 Nov 2023. Not a live quote. Adjusted for share splits, so the line has no step at a split; dividends are not added back.

Revenue and profit

What the business sells, and what is left of it. Point at a year for the detail.
RevenueOperating incomeNet income
Fiscal year 2017Operating income−16.3Net income−20.2Fiscal year 2018Operating income−18.9Net income−19.2Fiscal year 2019Revenue28.9Operating income−20.7Net income−18.7Fiscal year 2020Revenue37.0 +27.8%Operating income−27.6Net income−26.5Fiscal year 2021Revenue14.1 −62.0%Operating income−84.0Net income−84.7Fiscal year 2022Revenue0.0 −100.0%Operating income−59.0Net income−58.0EPS, diluted−227.42Fiscal year 2023Revenue0.0Operating income−84.5Net income−81.2EPS, diluted−53.08Fiscal year 2024Revenue2.3Operating income−91.9Net income−83.6EPS, diluted−9.37Fiscal year 2025Revenue6.4 +181.5%Operating income−121.9Net income−117.3EPS, diluted−12.48
FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Revenue n/a n/a 28.9 37.0 14.1 0.0 0.0 2.3 6.4
Growth +27.8% −62.0% −100.0% +181.5%
Operating income −16.3 −18.9 −20.7 −27.6 −84.0 −59.0 −84.5 −91.9 −121.9
Net income −20.2 −19.2 −18.7 −26.5 −84.7 −58.0 −81.2 −83.6 −117.3
Growth
EPS, diluted n/a n/a n/a n/a n/a −227.42 −53.08 −9.37 −12.48

Margins

How much of each dollar of revenue it keeps. Point at a year for the detail.
Operating marginNet margin
Fiscal year 2017Fiscal year 2018Fiscal year 2019Operating margin−71.4%Net margin−64.8%Free cash flow margin114.5%Fiscal year 2020Operating margin−74.5%Net margin−71.7%Free cash flow margin−140.2%Fiscal year 2021Operating margin−597.3%Net margin−602.0%Free cash flow margin−561.4%Fiscal year 2022Fiscal year 2023Fiscal year 2024Operating margin−4,047.1%Net margin−3,680.4%Free cash flow margin−3,433.6%Fiscal year 2025Operating margin−1,906.4%Net margin−1,834.5%Free cash flow margin−1,237.2%
FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Operating margin n/a n/a −71.4% −74.5% −597.3% n/a n/a −4,047.1% −1,906.4%
Net margin n/a n/a −64.8% −71.7% −602.0% n/a n/a −3,680.4% −1,834.5%
Free cash flow margin n/a n/a 114.5% −140.2% −561.4% n/a n/a −3,433.6% −1,237.2%

Cash flow

The cash the business makes, what it reinvests, and what it hands back. Point at a year for the detail.
Operating cash flowCapital expenditureFree cash flow
Fiscal year 2017Operating cash flow−14.6Capital expenditure−1.9Free cash flow−16.5Fiscal year 2018Operating cash flow−17.0Capital expenditure−0.4Free cash flow−17.5Fiscal year 2019Operating cash flow34.2Capital expenditure−1.1Free cash flow33.2Fiscal year 2020Operating cash flow−45.2Capital expenditure−6.7Free cash flow−51.9 −256.4%Fiscal year 2021Operating cash flow−76.1Capital expenditure−2.9Free cash flow−79.0Fiscal year 2022Operating cash flow−53.6Capital expenditure−5.1Free cash flow−58.8Fiscal year 2023Operating cash flow−67.3Capital expenditure−7.8Free cash flow−75.1Fiscal year 2024Operating cash flow−60.1Capital expenditure−17.9Free cash flow−78.0Fiscal year 2025Operating cash flow−78.6Capital expenditure−0.5Free cash flow−79.1
FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Operating cash flow −14.6 −17.0 34.2 −45.2 −76.1 −53.6 −67.3 −60.1 −78.6
Capital expenditure −1.9 −0.4 −1.1 −6.7 −2.9 −5.1 −7.8 −17.9 −0.5
Free cash flow −16.5 −17.5 33.2 −51.9 −79.0 −58.8 −75.1 −78.0 −79.1
Growth −256.4%

Balance sheet

What it holds against what it owes, at each year end. Point at a year for the detail.
CashTotal debt
Fiscal year 2017Shareholders’ equity−29.6Fiscal year 2018Cash42.2Total debt0.3Net cash (debt)41.8Shareholders’ equity−48.3Fiscal year 2019Cash200.2Total debt0.2Net cash (debt)200.0Shareholders’ equity167.4Debt to equity0.00Fiscal year 2020Cash220.3Shareholders’ equity192.5Fiscal year 2021Cash79.6Total debt0.8Net cash (debt)78.8Shareholders’ equity−42.2Fiscal year 2022Cash36.3Total debt10.0Net cash (debt)26.3Shareholders’ equity−99.0Fiscal year 2023Cash166.2Shareholders’ equity169.9Fiscal year 2024Cash55.6Shareholders’ equity160.4Fiscal year 2025Cash21.8Shareholders’ equity51.4
FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Cash n/a 42.2 200.2 220.3 79.6 36.3 166.2 55.6 21.8
Total debt n/a 0.3 0.2 n/a 0.8 10.0 n/a n/a n/a
Net cash (debt) n/a 41.8 200.0 n/a 78.8 26.3 n/a n/a n/a
Shareholders’ equity −29.6 −48.3 167.4 192.5 −42.2 −99.0 169.9 160.4 51.4
Debt to equity n/a n/a 0.00 n/a n/a n/a n/a n/a n/a

In millions of USD, except per-share figures and ratios. Fiscal years, as last filed with the SEC.

Financial statements FY2025 · 10-K

Income statement

In millions of USD, except per-share figures; shares in millions. Fiscal years ending December, each column as last filed with the SEC.
Click a line to chart it
Fiscal year FY2017 31 Dec 2017 FY2018 31 Dec 2018 FY2019 31 Dec 2019 FY2020 31 Dec 2020 FY2021 31 Dec 2021 FY2022 31 Dec 2022 FY2023† 31 Dec 2023 FY2024† 31 Dec 2024 FY2025 31 Dec 2025
Revenue and profit
n/a n/a 28.9 37.0 14.1 0.0 0.0 2.3 6.4
Growth +27.8% −62.0% −100.0% +181.5%
12.0 11.9 18.8 37.4 60.9 42.2 57.3 63.6 65.6
4.3 7.1 14.8 27.1 37.2 16.8 27.3 30.5 28.2
−16.3 −18.9 −20.7 −27.6 −84.0 −59.0 −84.5 −91.9 −121.9
Growth
n/a n/a −18.7 −26.5 −84.7 −58.0 −81.1 −83.4 −116.6
n/a n/a 0.0 0.0 0.0 0.0 0.0 0.1 0.6
−20.2 −19.2 −18.7 −26.5 −84.7 −58.0 −81.2 −83.6 −117.3
Growth
Per share
n/a n/a n/a n/a n/a −227.42 −53.08 −9.37 −12.48
n/a n/a n/a n/a n/a −227.42 −53.08 −9.37 −12.48
Growth
n/a n/a n/a n/a n/a 0.3 1.5 8.9 9.4
n/a n/a n/a n/a n/a 0.3 1.5 8.9 9.4
Growth +499.3% +483.3% +5.3%

† The diluted share count jumps at 2023 and 2024, so per-share figures either side of that column are not comparable. Usually a split, but the break lands on the restatement boundary rather than on the split date, because every column is that period’s latest filing.

Five years in brief

Worked out from the figures above, not from a press release
  • Revenue shrank 29.6% a year over five years.
  • Operating margin is down 1,831.9 points on five years ago, at -1,906.4%.
  • A net loss in 9 of 9 years on file.