MTNL Mahanagar Telephone Nigam Ltd Investments/Divestments Announcement 2023 - Corporate Action Notice MTNL has received a Corporate Action Notice from BNY Mellon regarding the surrender and cancellation of ADRs and the exchange for cash proceeds on a pro-rata basis..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Mahanagar Telephone Nigam Ltd