ADTN Investor Alert: Levi & Korsinsky Notifies Investors of Investigation Into ADTRAN Holdings (ADTN)
ADTRAN shareholders were hit by an approximately 15% decline after preliminary Q2 2026 revenue and operating margin came in below the Company's stated ranges. The investigation focuses on investor losses following ADTRAN’s disclosure of preliminary Q2 2026 operating results that fell below its previously issued guidance.
ADTRAN Holdings (NASDAQ: ADTN) shares fell approximately 15% on July 22, 2026 after the company announced preliminary unaudited Q2 2026 revenue of $280 million to $282 million and non-GAAP operating margin of about 3.5% to 4.0%, both below its guidance of $283 million to $303 million in revenue and 5% to 9% non-GAAP operating margin. If this decline hit your ADTN investment, you are encouraged to submit your information now. You may also contact Joseph E. Levi, Esq. at jlevi@levikorsinsky.com or (212) 363-7500.
On the Q1 2026 call, CFO 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 figures placed revenue $1 million to $23 million below that range and operating margin at least 100 basis points below the bottom of the stated range.






