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.
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Headcount trend
Korro Bio went from 79 employees in Jul 2023 to 106 in Jun 2025. Jan to Jun 2025: 11 people joined, 5 left.
Headcount data through Jun 2025
Org structure
Headcount by department
Hiring now
See all jobsH-1B sponsorship
The department split adds up all the years listed above. FY2026 alone: 1 filings.
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Korro Bio FAQ
How many employees does Korro Bio have?
Korro Bio has about 106 employees, down 2.8% over the 3 months to Jun 2025.
Does Korro Bio sponsor H1B visas?
Yes. Korro Bio filed 1 H1B (LCA) application in FY2026, according to the latest U.S. Department of Labor disclosures. It was for a Engineering role.
What is Korro Bio's revenue per employee?
Korro Bio makes about $45K in revenue per employee, based on $4.82M annual revenue and 106 employees.
Is Korro Bio a public company?
Yes. Korro Bio is publicly traded under the ticker KRRO on NASDAQ.
Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.