ONGC Oil & Natural Gas Corpn Ltd Changes in management or control Announcement 2025 - Management Changes Three Executive Directors, Ravindra Madhav Patil, Anupam Saxena, and Ajay Jain, will retire on 01.08.2025 due to superannuation..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Oil & Natural Gas Corpn Ltd