SymbolKRRO
NameKORRO BIO, INC.
SectorHEALTH CARE
RegionNorth America
IndustryBiotechnology: Pharmaceutical Preparations
Address60 FIRST STREET,2ND FLOOR,SUITE 250, CAMBRIDGE, Massachusetts, 02141, United States
Telephone+1 617 - 468-1999
Fax
Email
Websitehttps://www.korrobio.com
IncorporationUNDEFINED
Incorporated On
Employees
Fiscal Year
Public Since
ExchangesNASDAQ
Auditor
Audit StatusNOT PROVIDED
Reporting Status
CIK0001703647
Description

Korro Bio, Inc. is a biopharmaceutical company. The Company discovers, develops, and commercializes genetic medicines based on editing ribonucleic acid (RNA), enabling treatment of both rare and highly prevalent diseases. The Company is generating a portfolio of differentiated programs that are designed to harness the bodys natural RNA editing process to effect a precise yet transient single base edit. By editing RNA instead of DNA, it is expanding the reach of genetic medicines. Its Oligonucleotide Promoted Editing of RNA (OPERA) is a foundational platform for RNA editing, which is designed to edit RNA in vivo by delivering an oligonucleotide guide that can target specific RNA sequences. The Companys first development candidate, KRRO-110, is in development as a potential treatment for Alpha-1 Antitrypsin Deficiency (AATD), that has the potential to be disease-modifying and provide a differentiated therapeutic option.

Additional info from NASDAQ:
Korro Bio, Inc. is a biopharmaceutical company. The Company discovers, develops, and commercializes genetic medicines based on editing ribonucleic acid (RNA), enabling treatment of both rare and highly prevalent diseases. The Company is generating a portfolio of differentiated programs that are designed to harness the bodys natural RNA editing process to effect a precise yet transient single base edit. By editing RNA instead of DNA, it is expanding the reach of genetic medicines. Its Oligonucleotide Promoted Editing of RNA (OPERA) is a foundational platform for RNA editing, which is designed to edit RNA in vivo by delivering an oligonucleotide guide that can target specific RNA sequences. The Companys first development candidate, KRRO-110, is in development as a potential treatment for Alpha-1 Antitrypsin Deficiency (AATD), that has the potential to be disease-modifying and provide a differentiated therapeutic option.

2026-06-25 00:09

FORMELA JEAN FRANCOIS 🔴 sold 171.4K shares of Korro Bio, Inc. (KRRO) at $14.98 ($2.5M) Transaction Date: Jun 22, 2026 | Filing ID: 000004

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2026-06-24 21:50

📋 Atlas Venture Fund XI, L.P. (Shareholder) plans to sell 41K shares of Korro Bio, Inc. (at $13.71 each, total $567K) Filed: Jun 24, 2026 | ID: 045302

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2026-06-24 21:50

📋 Atlas Venture Opportunity Fund II, L.P. (Shareholder) plans to sell 7K shares of Korro Bio, Inc. (at $13.71 each, total $97K) Filed: Jun 24, 2026 | ID: 045301

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2026-06-23 22:12

📋 Atlas Venture Opportunity Fund II, L.P. (Shareholder) plans to sell 17K shares of Korro Bio, Inc. (at $13.90 each, total $242K) Filed: Jun 23, 2026 | ID: 044983

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2026-06-23 22:12

📋 Atlas Venture Fund XI, L.P. (Shareholder) plans to sell 102K shares of Korro Bio, Inc. (at $13.90 each, total $1.4M) Filed: Jun 23, 2026 | ID: 044982

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2026-06-22 21:32

📋 Atlas Venture Fund XI, L.P. (Shareholder) plans to sell 21K shares of Korro Bio, Inc. (at $12.99 each, total $277K) Filed: Jun 22, 2026 | ID: 044738

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2026-06-22 21:30

📋 Atlas Venture Opportunity Fund II, L.P. (Shareholder) plans to sell 4K shares of Korro Bio, Inc. (at $12.99 each, total $48K) Filed: Jun 22, 2026 | ID: 044737

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2026-06-17 20:14

Chappell Todd 🔴 sold 3.2K shares of Korro Bio, Inc. (KRRO) at $10.83 Transaction Date: Jun 16, 2026 | Filing ID: 274171

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2026-06-17 20:11

Vincent Loic A 🔴 sold 3.4K shares of Korro Bio, Inc. (KRRO) at $10.83 Transaction Date: Jun 16, 2026 | Filing ID: 274156

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2026-06-17 20:08

Cerio Jeffrey 🔴 sold 6.6K shares of Korro Bio, Inc. (KRRO) at $10.83 Transaction Date: Jun 16, 2026 | Filing ID: 274143

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Trial ID Title Phase Indication Status Start Date Completion Date Source
NCT06677307 A Phase 1/2a, Single- and Multiple-dose Escalation Study of KRRO-110 Phase1 Alpha-1 Anti-trypsin Deficiency Terminated 2025-01-13 2025-12-15 ClinicalTrials.gov
Total clinical trials: 1
Product Name Type Development Stage Therapeutic Area Study Status Trial ID
KRRO-110 Other Phase PHASE1 Alpha-1 Anti-trypsin Deficiency TERMINATED NCT06677307
KRRO-110 Other Phase PHASE1 Alpha-1 Anti-trypsin Deficiency TERMINATED NCT06677307
KRRO-110 DRUG Phase PHASE1 Alpha-1 Anti-trypsin Deficiency ACTIVE_NOT_RECRUITING NCT06677307
Total products: 3