 HUNTSVILLE, Ala.--BUSINESS WIRE--ADTRAN, Inc. NASDAQ: ADTN announced today that the Company will release its financial results for the first quarter 2022 after market close on Wednesday, May 4, 2022. The Company will conduct a conference call on Thursday, May 5, 2022 to discuss the results for the quarter. What: Adtran Earnings Call When: 9:30 a.m. Central Time on Thursday, May 5, 2022 Where: Adtran will webcast this conference. To listen, simply visit Adtrans Inves 