Korro Bio, Inc. (KRRO) Surges 29.7%: Is This an Indication of Further Gains?

Korro Bio, Inc. (KRRO) witnessed a jump in share price last session on above-average trading volume. The latest trend in earnings estimate revisions for the stock doesn't suggest further strength down the road.

Zacks Investment Research • Oct 23, 2026

Korro Reports Best-in-Class Preclinical Data for KRRO-111 Demonstrating Potential to Benefit Lung and Liver Manifestations of Alpha-1 Antitrypsin Deficiency

Repeat dose mouse studies achieved >95% SERPINA1 mRNA editing, sustained restoration of circulating functional M-AAT and increased total AAT by ~6-fold KRRO-111 reduced pathogenic hepatic Z-AAT by up to 95%, highlighting its potential to reduce toxic protein accumulation in the liver Best-in-class preclinical profile supports KRRO-111's potential to address both liver and lung manifestations of AATD; regulatory submission expected in the first half of 2027 CAMBRIDGE, Mass., Oct. 22, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a clinical-stage biopharmaceutical company leveraging its novel oligonucleotide promoted editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, today announced preclinical results for its pipeline program KRRO-111 for the potential treatment of alpha-1 antitrypsin deficiency (AATD) delivered subcutaneously.

GlobeNewsWire • Oct 22, 2026

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

CAMBRIDGE, Mass., Oct. 16, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a clinical-stage 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 two newly hired employees.

GlobeNewsWire • Oct 16, 2026

Korro Announces First Cohort Dosed in Phase 1/2 Clinical Trial (ANCHOR) for KRRO-121

CAMBRIDGE, Mass., Oct. 05, 2026 (GLOBE NEWSWIRE) -- Korro Bio, Inc. (Korro) (Nasdaq: KRRO), a clinical-stage biopharmaceutical company leveraging its oligonucleotide promoted editing of RNA (OPERA®) platform to develop a new class of genetic medicines for rare and highly prevalent diseases, announced today that the first cohort of participants has been dosed in its Phase 1/2 clinical trial for KRRO-121, the Company's GalNAc-conjugated RNA-editing oligonucleotide (REO) in development for the potential treatment of hyperammonemia in patients with urea cycle disorders (UCDs) and patients with hepatic encephalopathy (HE).

GlobeNewsWire • Oct 5, 2026

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.

GlobeNewsWire • Sep 11, 2026

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:

GlobeNewsWire • Aug 27, 2026

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.

Zacks Investment Research • Aug 10, 2026

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.

GlobeNewsWire • Aug 6, 2026

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).

Zacks Investment Research • Jul 8, 2026

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.

Zacks Investment Research • Jun 19, 2026