SHAREHOLDER INVESTIGATION: Halper Sadeh LLP Investigates ADTN, FTSI, PTRS; Shareholders are Encouraged to Contact the Firm
NEW YORK, Dec. 11, 2023 /PRNewswire/ — Halper Sadeh LLP, a global investor rights law firm, announces it is investigating the following companies: ADTRAN, Inc. (NASDAQ: ADTN) concerning potential violations of the federal securities laws and/or breaches of fiduciary duties relating to its…