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ADTRAN Holdings, Inc.

For the period ended Dec 31, 2025. Filed Feb 26, 2026.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 26, 2026

ADTN$4.41+2.8%Stored close · as of Nov 10, 2026

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

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Contents

Item 3. Legal Proceedings

The information presented under the captions "Legal Matters" and “DPLTA Appraisal Proceedings” in Note 17 “Commitments and Contingencies” of the Notes to Consolidated Financial Statements included in Part II, Item 8 of this report is incorporated herein by reference.

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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.