Korro Bio, INC

Market Movers (8-K)

NASDAQ
Korro Bio stockholders elected two Class I directors, approved executive compensation, and ratified the appointment of Ernst & Young LLP.
NASDAQ
Korro Bio announces KRRO-111 as a development candidate for Alpha-1 Antitrypsin Deficiency, showing promising preclinical results in restoring functional AAT protein.
NASDAQ
Korro Bio announced first quarter 2026 financial results, highlighting significant scientific progress in its RNA editing platform and a corporate update including an $85 million private placement.
Capital raise
NASDAQ
Korro Bio announced its full year 2025 financial results, highlighted by the nomination of a new development candidate KRRO-121 and an oversubscribed $85 million private placement extending its cash runway into the second half of 2028.
Capital raise
Worse than expected
NASDAQ
Korro Bio presented preclinical data for KRRO-121, a potential first-in-class treatment for hyperammonemia in Urea Cycle Disorders and Hepatic Encephalopathy, at its virtual Analyst Day.
Better than expected
NASDAQ
Korro Bio, Inc. updated its corporate presentation, revealing a pipeline refresh, the termination of the REWRITE clinical trial for KRRO-110, and a 12-month pause in its Novo Nordisk collaboration.
Worse than expected
Delay expected

Quarterly Earnings (10-Q)

NASDAQ
Korro Bio, Inc. filed its Q1 2026 Form 10-Q, detailing a net loss of $19.6 million and a cash runway extending into the second half of 2028 following a significant private placement.
Worse than expected
Capital raise
NASDAQ
Korro Bio reported a widened net loss in Q3 2025, announced a pivot for its AATD program after KRRO-110 failed to meet protein targets, and paused its collaboration with Novo Nordisk.
Worse than expected
Delay expected
Capital raise
NASDAQ
Korro Bio, a clinical-stage biopharmaceutical company, reported increased net losses and cash burn for the first half of 2025, despite initiating collaboration revenue and advancing its lead RNA editing program, KRRO-110, into Phase 1/2a clinical trials.
Worse than expected
Capital raise
NASDAQ
Korro Bio, a clinical-stage biopharmaceutical company, announced its first quarter 2025 financial results, highlighting progress in its AATD clinical program and strategic streamlining efforts.
Worse than expected
NASDAQ
Korro Bio, a biopharmaceutical company focused on RNA editing, reported its third quarter 2024 financial results, highlighting a collaboration with Novo Nordisk and progress in its clinical programs.
NASDAQ
Korro Bio, a biopharmaceutical company focused on RNA editing, reported a net loss of $41.4 million for the first six months of 2024, while highlighting progress in its preclinical programs and financial runway.
Worse than expected
Capital raise

Annual Reports (10-K)

NASDAQ
Korro Bio reports significant losses and a strategic shift in its AATD program after a clinical setback, while advancing its hyperammonemia candidate and securing new funding.
Delay expected
Worse than expected
Capital raise
NASDAQ
Korro Bio advances its RNA editing platform with clinical trial initiation and pipeline development, while reporting a net loss for 2024.
NASDAQ
Korro Bio's 10-K filing details its RNA editing platform, OPERA, and its pipeline of therapeutic programs targeting various diseases.
Worse than expected
Capital raise

Insider Trading (Form 4)

NASDAQ
Loic A Vincent, Chief Scientific Officer of Korro Bio, Inc., received 7,500 shares of common stock on July 15, 2026.
NASDAQ
Oliver Dolan, Senior Vice President, Finance of Korro Bio, Inc., received 5,500 shares of common stock on July 15, 2026.
NASDAQ
Jeffrey Cerio, General Counsel of Korro Bio, Inc., received 6,500 shares of common stock on July 15, 2026.
NASDAQ
Todd Chappell, Chief Operating Officer of Korro Bio, Inc., received 7,500 shares of common stock on July 15, 2026.
NASDAQ
Korro Bio, Inc. director Jean Francois Formela reported the sale of common stock totaling 85,955 shares under a pre-established Rule 10b5-1 trading plan.
NASDAQ
Korro Bio, Inc. Director Jean Francois Formela reported the sale of common stock totaling over 160,000 shares across multiple transactions executed between June 22 and June 24, 2026, under a pre-arranged Rule 10b5-1 trading plan.

Proxy Statements (Def-14A)

NASDAQ
Korro Bio, Inc. has issued its 2026 proxy statement detailing the upcoming annual meeting of stockholders to be held virtually on June 10, 2026.
Capital raise
NASDAQ
Korro Bio, Inc. will hold its annual meeting of stockholders on June 11, 2025, with online access details and voting information now available.
NASDAQ
Korro Bio, Inc. announces its 2025 annual meeting of stockholders to be held virtually on June 11, 2025, featuring proposals including director elections, executive compensation approval, and auditor ratification.
NASDAQ
Korro Bio, Inc. will hold its 2024 annual meeting of stockholders virtually on June 11, 2024, to vote on director elections, an amendment to the Restated Certificate of Incorporation, and ratification of the company's independent auditor.
NASDAQ
Korro Bio, Inc. will hold its annual meeting of stockholders on June 11, 2024, to elect directors, approve an amendment to limit officer liability, and ratify the appointment of Ernst & Young LLP as its independent auditor.
NASDAQ
Korro Bio's upcoming annual meeting on June 11, 2024, will address the election of directors, an amendment to limit officer liability, and the ratification of Ernst & Young LLP as the company's auditor.

New Public Companies (S-1)

NASDAQ
Korro Bio is registering the resale of up to 1,213,569 shares of its common stock by selling stockholders, with the company not receiving any proceeds from the sale.

Schedule 13D - Activist Investments

NASDAQ
Korro Bio, Inc. has filed an amendment to its Schedule 13D, detailing significant transactions in its common stock by major holders Atlas XI and AVOF II over the past sixty days.
NASDAQ
New Enterprise Associates 17, L.P. and its affiliates increased their beneficial ownership in Korro Bio, Inc. to 9.9% through a recent private placement.
Capital raise

Schedule 13G - Passive Investments

NASDAQ
Point72 Asset Management and affiliated entities have reported a 1.9% beneficial ownership stake in Korro Bio, Inc. as of March 31, 2026.
NASDAQ
Lynx1 Capital Management LP and Weston Nichols have reported a 10.7% beneficial ownership stake in Korro Bio, Inc.
NASDAQ
The Vanguard Group filed an amended Schedule 13G, indicating zero beneficial ownership in Korro Bio Inc. following an internal realignment effective January 12, 2026.
NASDAQ
A group of Venrock entities and individuals have disclosed a 9.9% beneficial ownership stake in Korro Bio, Inc. through a Schedule 13G filing.
NASDAQ
Driehaus Capital Management LLC has filed an exit notice, reporting zero beneficial ownership in Korro Bio, Inc. common stock.
NASDAQ
Nantahala Capital Management, along with Wilmot B. Harkey and Daniel Mack, reported a 6.37% beneficial ownership stake in Korro Bio, Inc. as of December 31, 2025.