3 unchanged sentences
(c) Insider Trading Arrangements
−Removed: During the fiscal quarter ended March 31, 2026, none of the Company’s directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of Company securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement.”
+Added: Wilson, Jr ., our Chief Revenue Officer , adopted a Rule 10b5-1 trading arrangement (as defined in Item 408 of Regulation S-K) on May 19, 2026 .
+Added: Wilson's trading arrangement covers the sale of 56,068 shares of the Company’s common stock, and it is scheduled to terminate on the earlier of (i) May 31, 2027 and (ii) the date that all shares are sold.
+Added: Other than as disclosed above, during the fiscal quarter ended June 30, 2026, none of the Company’s directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of Company securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement” as defined in Item 408 of Regulation S-K.
Amended and Restated Certificate of Incorporation of ADTRAN Holdings, Inc.
(incorporated by reference to Exhibit 3.1 to the Company's Form 8-K filed July 8, 2022)
+Added: Certificate of Amendment to the Amended and Restated Certificate of Incorporation of ADTRAN Holdings, Inc.
+Added: (incorporated by reference to Exhibit 3.1 to the Company's Form 8-K filed May 18, 2026)
Second Amended and Restated Bylaws of ADTRAN Holdings, Inc.
5 unchanged sentences
2024 Employee Stock Incentive Plan (incorporated by reference to Exhibit 10.3 to the Company’s Form 8-K filed April 7, 2026)
−Removed: Form of 2026 Restricted Stock Unit Agreement under the ADTRAN Holdings, Inc.
−Removed: 2024 Employee Stock Incentive Plan
−Removed: Form of 2026 CEO Restricted Stock Unit Agreement under the ADTRAN Holdings, Inc.
−Removed: 2024 Employee Stock Incentive Plan
+Added: Credit Agreement dated July 21, 2026, by and among ADTRAN Holdings, Inc., as holdings, ADTRAN, Inc.
+Added: and Adtran Networks SE, as borrowers, JPMorgan Chase Bank, N.A.
+Added: Morgan SE, as administrative agents and the lenders party thereto (incorporated by reference to Exhibit 10.1 to the Company's Form 8-K filed July 23, 2026)
+Added: Guarantee and Collateral Agreement dated July 21, 2026 by and among ADTRAN Holdings, Inc., ADTRAN, Inc.
+Added: and certain subsidiaries party thereto in favor of JPMorgan Chase Bank, N.A.
+Added: (incorporated by reference to Exhibit 10.2 to the Company's Form 8-K filed July 23, 2026)
+Added: Share Pledge Agreement dated July 21, 2026 by and among ADTRAN Holdings, Inc., Adtran Networks SE, and JPMorgan Chase Bank, N.A., as administrative agent (incorporated by reference to Exhibit 10.3 to the Company's Form 8-K filed July 23, 2026)
Certification of the Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
1 unchanged sentence
Section 1350 Certifications
−Removed: The following financial statements from the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, formatted in Inline XBRL:
−Removed: (i) Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025;
−Removed: (ii) Condensed Consolidated Statements of Loss for the three months ended March 31, 2026 and 2025;
−Removed: (iii) Condensed Consolidated Statements of Comprehensive (Loss) Income for the three months ended March 31, 2026 and 2025;
−Removed: (iv) Condensed Consolidated Statements of Changes in Equity for the three months ended March 31, 2026 and 2025;
−Removed: (v) Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2026 and 2025;
+Added: The following financial statements from the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2026, formatted in Inline XBRL:
+Added: (i) Condensed Consolidated Balance Sheets as of June 30, 2026 and December 31, 2025;
+Added: (ii) Condensed Consolidated Statements of Loss for the three and six months ended June 30, 2026 and 2025;
+Added: (iii) Condensed Consolidated Statements of Comprehensive (Loss) Income for the three and six months ended June 30, 2026 and 2025;
+Added: (iv) Condensed Consolidated Statements of Changes in Equity for the three and six months ended June 30, 2026 and 2025;
+Added: (v) Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2026 and 2025;
and (vi) Notes to Condensed Consolidated Financial Statements
3 unchanged sentences
ADTRAN Holdings, Inc.
+Added: August 4, 2026
/s/ Timothy Santo
4 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.