Korro Bio

Korro Bio, Inc. is a biopharmaceutical company based in Cambridge, Massachusetts, founded in 2018. The company specializes in discovering, developing, and commercializing genetic medicines using its proprietary RNA editing technology, known as Oligonucleotide Promoted Editing of RNA (OPERA®). Korro Bio aims to enhance the lives of patients with serious diseases by making precise edits to RNA, which can help repair proteins affected by genetic mutations. The company's lead product candidate, KRRO-110, is currently in preclinical trials for treating Alpha-1 Antitrypsin Deficiency (AATD). Additionally, Korro Bio is developing programs targeting various conditions, including Parkinson's Disease, Amyotrophic Lateral Sclerosis (ALS), Severe Alcohol-Associated Hepatitis, and subsets of pain. Their CHORD technology allows for highly precise RNA edits, minimizing off-target effects and facilitating effective treatment options.

Research Cambridge, United States Founded 2014 ~80 employees NASDAQ: KRRO

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Employees
80
+3.9% in the 3 months to Sep 2026
Revenue / employee
$60.3K
Revenue ~$4.8M
Stock
KRRO
NASDAQ
12-month attrition
34.3%
Tech: 33.3%
H1B filings, FY2026
1
Sponsors visas
Open jobs
7
Last 30 days

Headcount trend

Korro Bio went from 88 employees in Oct 2024 to 80 in Sep 2026. Apr to Sep 2026: 8 people joined, 1 left.

Org structure

Headcount by department

Other53
Operations10
Finance7
HR5
Engineering4
Sales1

H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
Engineering2
Finance1

The department split adds up all the years listed above. FY2026 alone: 1 filings.

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Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.