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Korro Bio, Inc.

For the period ended Sep 30, 2025. Filed Nov 12, 2025.

View on SEC.gov

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 12, 2025

KRRO$15.73+5.1%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Condensed Consolidated Statements of Cash Flows

(amounts in thousands)

Nine Months Ended September 30,
20252024
Operating Activities:
Net loss$(67,218)$(62,382)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash lease expense5043,131
Stock-based compensation expense5,5843,105
Depreciation expense3,6312,312
Net amortization of premiums and discounts on marketable securities(467)(1,159)
Loss on disposal of property and equipment81—
Changes in operating assets and liabilities:
Accounts receivable876—
Prepaid expenses and other current assets(189)(893)
Accounts payable(1,674)(736)
Accrued expenses and other current liabilities(319)(4,765)
Deferred revenue(1,268)—
Operating lease liabilities(97)8,578
Other non-current assets(303)230
Net cash used in operating activities(60,859)(52,579)
Investing Activities:
Purchases of marketable securities(26,189)(118,132)
Proceeds from maturities of marketable securities55,70014,000
Purchases of property and equipment(434)(16,450)
Net cash provided by (used in) investing activities29,077(120,582)
Financing Activities:
Proceeds from PIPE financing, net of issuance costs—67,384
Proceeds from exercises of stock options3051,039
Net cash provided by financing activities30568,423
Effect of exchange rate changes on cash, cash equivalents and restricted cash(11)—
Net decrease in cash, cash equivalents and restricted cash(31,488)(104,738)
Cash, cash equivalents and restricted cash, beginning of period59,049173,119
Cash, cash equivalents and restricted cash, end of period$27,561$68,381
Non-cash investing and financing activities:
Property and equipment capitalized under tenant improvement allowance$—$7,583
Purchases of property and equipment in accounts payable and accrued expenses$14$1,401
Supplemental cash flow information:
Cash paid for income taxes$1$47
Cash paid for operating lease liabilities$3,944$2,083
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.