MTNL Mahanagar Telephone Nigam Ltd Management Changes Announcement 2025 - Director Change Shri Piyush Ranjan Nishad has completed his tenure as Independent Director of Mahanagar Telephone Nigam Ltd, effective March 23, 2025..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Mahanagar Telephone Nigam Ltd