Hagens Berman Investigating ADTRAN (ADTN) Inventory Accounting, Investors With Losses Should Contact Firm

SAN FRANCISCO, Aug. 21, 2019 /PRNewswire/ -- Hagens Berman Sobol Shapiro LLP alerts investors in ADTRAN, Inc. (NASDAQ: ADTN) to the firm's investigation of possible disclosure violations. If you invested in ADTRAN before August 14, 2019 and suffered losses or have information that may...

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