Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against ADTRAN Holdings, Inc. (ADTN) And Encourages Stockholders to Reach Out

NEW YORK CITY, NY / ACCESS Newswire / July 30, 2026 / Bronstein, Gewirtz & Grossman, LLC is investigating potential claims on behalf of purchasers of ADTRAN Holdings, Inc. ("ADTRAN" or "the Company") (NASDAQ:ADTN). Investors who purchased ADTRAN securities are encouraged to obtain additional information and assist the investigation by visiting the firm's site: bgandg.com/ADTN.

ADTRAN Investigation Details

On July 22, 2026, ADTRAN Holdings announced preliminary unaudited financial results for the second quarter of 2026, reporting expected revenue of $280 million to $282 million and a non-GAAP operating margin of approximately 3.5% to 4.0%, both below the Company's previously issued guidance of $283 million to $303 million in revenue and a non-GAAP operating margin of 5% to 9%. During the Company's first quarter 2026 earnings call, Chief Financial Officer Timothy Santo stated, "We expect revenue to be between $283 million and $303 million, and non-GAAP operating margin within a range of 5% to 9%." The preliminary second quarter results also fell below analysts' consensus revenue estimates. Following this news, ADTRAN Holdings' stock price fell approximately 15%.

What's Next for ADTRAN Investors?

If you are aware of any facts relating to this investigation or purchased ADTRAN securities, you can assist this investigation by visiting the firm's site: bgandg.com/ADTN. You can also contact Peretz Bronstein or his client relations manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC: 917-590-0911

No Cost to ADTRAN Investors

We, Bronstein, Gewirtz & Grossman, LLC, represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys' fees, usually a percentage of the total recovery, only if we are successful.

Why Bronstein, Gewirtz & Grossman, LLC for ADTRAN Securities Investigation?

Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide.

"Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace," said Peretz Bronstein, Founding Partner of Bronstein, Gewirtz & Grossman, LLC.

Contact Info

Peretz Bronstein, Esq. or Nathan Miller

Bronstein, Gewirtz & Grossman, LLC

917-590-0911 | [email protected]

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Prior results do not guarantee similar outcomes.

SOURCE: Bronstein, Gewirtz & Grossman, LLC