Korro Bio, Inc.

What Korro Bio, Inc. reported on August 6, 2026

The quarter ending June 30, 2026, against the same quarter a year earlier.

These are single quarters, not a trailing year — the figures elsewhere on this site cover twelve months and will be much larger. A seasonal business swings a long way between the two: ServiceNow earns $2.0B of free cash flow in its December quarter and $0.5B in its June one.

Compared against the same quarter a year earlier, not against an analyst forecast. A “beat” or “miss” needs a consensus estimate, which is licensed data we do not carry — and getting it wrong is worse than leaving it out.

How the share price reacted

Releases land after the close or before the open, so the move is the session that follows.

What Korro Bio, Inc. does

Hyperammonemia, the dangerous accumulation of ammonia in the blood, manifests across multiple indications, including urea cycle disorders (UCDs) and hepatic encephalopathy (HE). UCDs are rare inborn errors of metabolism involving deficiencies of enzymes required for ureagenesis, the process of converting ammonia to urea for excretion. The absence or deficiency of any of the seven urea cycle enzymes can result in hyperammonemia and an increased risk of hyperammonemic crises (HACs), which can result in severe and permanent neurological symptoms, coma, and death. HE is a neuropsychiatric complication of liver disease characterized by cognitive dysfunction and altered consciousness. HE is primarily caused by the liver’s inability to adequately detoxify ammonia, typically occurring in patients with liver cirrhosis compromising their urea cycle. This leads to ammonia accumulating in the bloodstream and crossing the blood-brain barrier, causing brain dysfunction that ranges from subtle cognitive impairment to severe confusion and coma.

The company’s own description, as it appears at the foot of the release.