Newspaper Advertisement of the Notice to Shareholders regarding special window for re-lodgment of transfer requests of physical shares.

No. Secl/Special Window 12th October 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor, 25th Floor, P J Tower, Bandra -Kurla Complex, Dalal Street, Bandra (East) Mumbai – 400001 Mumbai - 400051 Scrip Symbol: IOC Scrip Code: 530965 Sub : Newspaper advertisement of the Notice to shareholders of Indian Oil Corporation Ltd. — Special Window for re-lodgment of transfer requests of Physical Shares. Dear Sir, In accordance with SEBI Circular no HO/38/13/11(2)2026-MIRSD-POD/I/3750/2026 dated 30th January 2026, a special window has been opened for Transfer and Dematerialization (Demat) of Physical Shares. Pursuant to the aforesaid, please find enclosed herewith the advertisement published in Times of India, Economic Times, Navbharat Times and Maharashtra Times on 12th October 2026. This facility of re-lodgement will be available to the eligible physical shareholders till 4th February 2027. Shareholders are requested to submit their transfer requests along with physical share certificates with our Registrar and Share Transfer Agent, KFin Technologies Ltd. The above is for information and record please. Thanking you, Yours faithfully, For Indian Oil Corporation Limited (Kamal Kumar Gwalani) Company Secretary NEWSPAPER - TIMES OF INDIA DTD 12-10-2026 NEWSPAPER – ECONOMIC TIMES DTD 12-10-2026 NEWSPAPER – NAVBHARAT TIMES DTD 12-10-2026 NEWSPAPER – MAHARASHTRA TIMES DTD 12-10-2026