ONGC Oil & Natural Gas Corpn Ltd Significant changes in accounting policies or practices Announcement 2023 - Related Party Transactions Statement Oil and Natural Gas Corporation Ltd shares statement of Related Party Transactions for the half year ended 31st March 2023 as per SEBI regulations..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Oil & Natural Gas Corpn Ltd