KRRO 8-K: Contract loss
Filed with the SEC on · accession 0001193125-26-448532
KRRO filed a 8-K (current report) with the SEC on Nov 5, 2026. Novo Nordisk elected to terminate for convenience its research collaboration and license agreement with Korro Bio, effective February 1, 2027. The stock moved -11.4% by the first close after the filing.
Summary of the filing
Novo Nordisk elected to terminate for convenience its research collaboration and license agreement with Korro Bio, effective February 1, 2027. Korro received a $10 million upfront payment previously but no milestones were earned, and Novo Nordisk will reimburse wind-down costs.
Key details
How KRRO stock reacted
Close before
$16.62
Nov 4, 2026
First close after
-11.37%
$14.73
5 trading days
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Since filing
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Click hereFrequently asked questions
What did KRRO file with the SEC on Nov 5, 2026?
KRRO filed a 8-K (Contract loss). Novo Nordisk elected to terminate for convenience its research collaboration and license agreement with Korro Bio, effective February 1, 2027. Korro received a $10 million upfront payment previously but no milestones were earned, and Novo Nordisk will reimburse wind-down costs.
What does a contract loss mean for KRRO stock?
A contract important enough that investors need to know about it — a big customer contract, a loan, a merger agreement or a partnership.
How do I read a 8-K?
A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The "Item" number tells you the topic (e.g. 2.02 results, 5.02 executive change, 1.01 new agreement, 1.03 bankruptcy). Exhibits (99.1 press release) usually hold the details.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 8-K (current report): A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more.
How did KRRO stock react to this filing?
KRRO closed at $16.62 before the filing and $14.73 on Nov 5, 2026 (-11.37%).
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