Korro Bio, Inc. (KRRO)
Nasdaq: KRRO · Pharmaceutical Preparations · Cambridge, MA · filing with the SEC since 2017
Filings
311 filings since 2017 beside 522 insider forms · Non-accelerated filer and smaller reporting company · read from EDGAR on Nov 13, 2026Due nextNon-accelerated filer and smaller reporting company
10-K
Annual report for the fiscal year ending Dec 31, 2026Non-accelerated filers and smaller reporting companies have 90 days after the fiscal year ends.
by Mar 31, 2027
10-Q
Quarterly report for the quarter ending Mar 31, 2027Non-accelerated filers and smaller reporting companies have 45 days after the quarter ends; quarter ends are taken to the month end.
by May 15, 2027
A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 36 days after the quarter ended. The proxy statement was last filed Apr 16, 2026.
Filings a yearinsider forms included
5692716727710545119
2026 counts to Nov 13, 2026.
Officer or director change (8-K item 5.02): 9 times in the last 36 months, the newest Dec 18, 2025.SEC letters: 11 in the last 36 months, the newest Mar 18, 2026.
Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.
FiledFormWhat it is, in plain wordsPeriodAsk
Nov 5, 2026
8-K items 1.02, 2.02, 9.01
Major agreement ended; Results released · Current report
Nov 3, 2026
Aug 6, 2026
8-K items 1.01, 2.02, 3.02, 9.01
Major agreement signed; Results released; Shares sold without registration · Current report
Aug 5, 2026
Mar 9, 2026
8-K items 1.01, 2.02, 3.02, 7.01, 9.01
Major agreement signed; Results released; Shares sold without registration; Investor disclosure (Regulation FD) · Current report
40 of 311 shown
Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.