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Korro Bio

KRRO

Market cap $181M

12.32 USD

-1.51

10.92%

At close Updated Sep 17, 2:04 PM EDT

1 day

-10.92%

5 days

-7.23%

1 month

-6.24%

3 months

11.49%

6 months

0.08%

Year to date

53.04%

1 year

-59.45%

5 years

-96.57%

10 years

-98.2%

About: Korro Bio Inc is a biopharmaceutical company with a mission to discover, develop, and commercialize a new class of genetic medicines based on editing RNA, enabling the treatment of both rare and highly prevalent diseases. It is generating a portfolio of differentiated programs that are designed to harness the body's natural RNA editing process to effect a precise yet transient single base edit. By editing RNA instead of DNA, Korro Bio is expanding the reach of genetic medicines by delivering additional precision and tunability. The company operates and manages its business as one reportable segment and one operating segment, which is the business of discovering, developing and commercializing therapies derived from or incorporating its RNA-editing technology.

Employees: 57

Healthcare Biotechnology

News

Positive

Neutral

Negative

Sentiment 3-Months

Positive 37.5%

Neutral 62.5%

Negative 0%

Korro Bio Reports Inducement Grant Under Nasdaq Listing Rule 5635(c)(4)

CAMBRIDGE, Mass., Sept. 11, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a biopharmaceutical company leveraging a novel Oligonucleotide Promoted Editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today announced the grant of non-statutory stock options to three newly hired employees.

Korro Bio Reports Inducement Grant Under Nasdaq Listing Rule 5635(c)(4)

Korro to Participate in Upcoming Investor Conferences

CAMBRIDGE, Mass., Aug. 27, 2026 (GLOBE NEWSWIRE) -- Korro, Bio, Inc. (Korro) (Nasdaq: KRRO), a biopharmaceutical company leveraging a novel oligonucleotide promoted editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today announced that Ram Aiyar, President & Chief Executive Officer will participate in the following investor conferences:

Korro to Participate in Upcoming Investor Conferences

Korro Bio Reports Inducement Grant Under Nasdaq Listing Rule 5635(c)(4)

CAMBRIDGE, Mass., Aug. 14, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a biopharmaceutical company leveraging a novel Oligonucleotide Promoted Editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today announced the grant of a non-statutory stock option to one newly hired employee.

Korro Bio Reports Inducement Grant Under Nasdaq Listing Rule 5635(c)(4)

Zacks Investment Research

All You Need to Know About Korro Bio, Inc. (KRRO) Rating Upgrade to Buy

Korro Bio, Inc. (KRRO) has been upgraded to a Zacks Rank #2 (Buy), reflecting growing optimism about the company's earnings prospects. This might drive the stock higher in the near term.

All You Need to Know About Korro Bio, Inc. (KRRO) Rating Upgrade to Buy

Korro Reports Second Quarter 2026 Financial Results and Provides Corporate Update

KRRO-121, a potential first-in-class transformational treatment for hyperammonemia, remains on track to commence first-in-human clinical trial in second half of 2026 Received Orphan Drug Designation from the European Medicines Agency (EMA) for KRRO-121 for patients with urea cycle disorders (UCDs) Nominated KRRO-111 as development candidate for the treatment of Alpha-1 Antitrypsin Deficiency (AATD); potential best-in-class therapeutic delivered subcutaneously (GalNAc-conjugated oligonucleotide) for a debilitating genetic condition impacting both the liver and lungs Ended second quarter 2026 with $137.9 million in cash, cash equivalents and marketable securities; provides sufficient resources to achieve value inflection points for multiple RNA editing programs including clinical data for KRRO-121 and KRRO-111; cash runway into the second half of 2028 CAMBRIDGE, Mass., Aug. 06, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a biopharmaceutical company leveraging a novel oligonucleotide promoted editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today reported results for the second quarter ended June 30, 2026, and provided a corporate update.

Korro Reports Second Quarter 2026 Financial Results and Provides Corporate Update

Korro Bio Reports Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

CAMBRIDGE, Mass., July 10, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO) a biopharmaceutical company leveraging a novel oligonucleotide promoted editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today announced the grant of non-statutory stock options to seven newly hired employees.

Korro Bio Reports Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)

Zacks Investment Research

Korro Bio, Inc. (KRRO) Upgraded to Buy: What Does It Mean for the Stock?

Korro Bio, Inc. (KRRO) might move higher on growing optimism about its earnings prospects, which is reflected by its upgrade to a Zacks Rank #2 (Buy).

Korro Bio, Inc. (KRRO) Upgraded to Buy: What Does It Mean for the Stock?

Zacks Investment Research

Korro Bio, Inc. (KRRO) Soars 17.6%: Is Further Upside Left in the Stock?

Korro Bio, Inc. (KRRO) was a big mover last session on higher-than-average trading volume. The latest trend in earnings estimate revisions might not help the stock continue moving higher in the near term.

Korro Bio, Inc. (KRRO) Soars 17.6%: Is Further Upside Left in the Stock?

Korro to Present at the 2026 Jefferies Global Healthcare Conference

CAMBRIDGE, Mass., May 27, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a biopharmaceutical company leveraging a novel Oligonucleotide Promoted Editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today announced that Ram Aiyar, Ph.D.

Korro to Present at the 2026 Jefferies Global Healthcare Conference

Korro Selects KRRO-111 as Development Candidate for the Potential Treatment of Alpha-1 Antitrypsin Deficiency (AATD)

Potential best-in-class therapeutic delivered subcutaneously (GalNAc-conjugated oligonucleotide) for a debilitating genetic condition impacting both the liver and lungs Demonstrated >90% editing of SERPINA1 transcript in vivo translating into ~90% repaired functional alpha-1 antitrypsin (AAT) protein in plasma in a mouse model of AATD Demonstrated a near elimination of active Z-protein production while showing progressive clearance of pre-existing aggregates in a mouse model of AATD Pre-clinical data highlighted the possibility of repeat dose therapy to achieve the functional equivalent of a DNA modification without altering the genome CAMBRIDGE, Mass., May 19, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a biopharmaceutical company leveraging a novel Oligonucleotide Promoted Editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today announced the addition of KRRO-111 for the potential treatment of AATD to its pipeline of therapeutic programs in development.

Korro Selects KRRO-111 as Development Candidate for the Potential Treatment of Alpha-1 Antitrypsin Deficiency (AATD)

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