Hourigan Rice Jacqueline - 04 Mar 2026 Form 4 Insider Report for ADTRAN Holdings, Inc. (ADTN)

Role: Director
Signature: /s/ Dan Ragsdale, by power of attorney
Issuer symbol: ADTN
Transactions as of: 04 Mar 2026
Net transactions value: -$148,238
Form type: 4
Filing time: 05 Mar 2026, 16:10:15 UTC
Previous filing: 05 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Jacqueline Hourigan Rice	Director	C/O ADTRAN HOLDINGS, INC., 901 EXPLORER BOULEVARD, HUNTSVILLE	/s/ Dan Ragsdale, by power of attorney	05 Mar 2026	0001637150

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ADTN	Common Stock	Sale	$148,238	-14,406	-51%	$10.29	13,809	04 Mar 2026	Direct	F1
holding	ADTN	Common Stock						62,281	04 Mar 2026	As Trustee

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.24 to $10.37, inclusive. The reporting person undertakes to provide to ADTRAN Holdings, Inc. (the Issuer), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.

Content

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.24 to $10.37, inclusive. The reporting person undertakes to provide to ADTRAN Holdings, Inc. (the Issuer), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.