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CIK 0001703647 · Non-accelerated filer<br>Smaller reporting company

Korro Bio, Inc.

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Ticker
KRRO
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
472324450
Phone
617-468-1999
Business address
60 FIRST STREET, 2ND FLOOR, SUITE 250, CAMBRIDGE, MA, 02141
Former names
Frequency Therapeutics, Inc.
Open-market buys, last 90 days
$884,752
in 1 filing
Open-market sales, last 90 days
$2,161,962
in 6 filings, $2.2M under 10b5-1 plans

Net −$1,277,210. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-02-02 Dolan Oliver Senior Vice President, Finance Grant or award · Stock Option (Right to Buy) +15,000 15,000
2026-02-02 Cerio Jeffrey General Counsel Grant or award · Stock Option (Right to Buy) +23,000 23,000
2026-02-02 Chappell Todd Chief Operating Officer Grant or award · Stock Option (Right to Buy) +38,000 38,000
2025-12-15 Chappell Todd Chief Operating Officer Grant or award +20,132 20,132
2025-12-15 Vincent Loic A Chief Scientific Officer Grant or award +21,715 21,715
2025-12-15 Cerio Jeffrey General Counsel Grant or award +41,902 41,902
2025-12-15 Dolan Oliver Senior Vice President, Finance Grant or award +21,482 21,482
2025-06-11 Behbahani Ali Director Grant or award · Stock Option (Right to Buy) +6,010 6,010
2025-06-11 Meyers Rachel Director Grant or award · Stock Option (Right to Buy) +6,010 6,010
2025-06-11 Bermingham Nessan Director Grant or award · Stock Option (Right to Buy) +6,010 6,010
2025-06-11 Knobil Katharine Director Grant or award · Stock Option (Right to Buy) +6,010 6,010
2025-06-11 FORMELA JEAN FRANCOIS Director Grant or award · Stock Option (Right to Buy) +6,010 6,010
2025-06-11 PEARSON TIMOTHY R Director Grant or award · Stock Option (Right to Buy) +6,010 6,010
2025-04-01 Dolan Oliver Senior Vice President, Finance Grant or award · Stock Option (Right to Buy) +20,000 20,000
2025-04-01 Vincent Loic A Chief Scientific Officer Grant or award · Stock Option (Right to Buy) +70,000 70,000
2025-02-03 Cerio Jeffrey General Counsel Grant or award · Stock Option (Right to Buy) +29,000 29,000
2025-02-03 Agarwal Vineet Chief Financial Officer Grant or award · Stock Option (Right to Buy) +30,000 30,000
2025-02-03 Aiyar Ram President and CEO Grant or award · Stock Option (Right to Buy) +100,000 100,000
2025-02-03 Chappell Todd Chief Operating Officer Grant or award · Stock Option (Right to Buy) +34,500 34,500
2025-02-03 Olugemo Olukemi Chief Medical Officer Grant or award · Stock Option (Right to Buy) +42,000 42,000

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