Press Release on Unaudited Financial Results for the Quarter ended 30th June 2026

3trqcT €Eqr fr{FTes ffid orqtrq /Corporate Offi ce I oil lndia Limited sf{d Errt{totl House, e{Ra a il. 6*D rr a{ d e fr fft ia *r's[lE i t. lo/ iOPl ao -t . 31 9 1, (* sw .qr/ .S e (c Ut o Pr )-16A, EfirdiiGqr E-6 +ta/Phone: +91 -1 20-24 1 9000 A Maharatna CPSE under 0t1 tltDIA Government of lndia €-ia/E-mail: oilindia@oilindia.in Ref. No. OI L/S trc/32-33/NSIr-llS Il Dated: 07.08.2026 National Stock Exchange of India Limited BSE Limited [:xchange Plaza. Department of Corporate Servicc Plot No. C/1. G Block. Phiroze Jeejeebhoy'l'owcrs Ilandra Kurla Complex, Dalal Street Ilandra (E), Mumbai - 400 051 Mumbai - 400 001 Symbol: OIL Security Code: 533106 Sub : Press Release on Unaudited Financial Results for Ouarter ended 30th June. 2026 (Standalone and Consolidated) Ref : Reeulation 30 of the SEBI (LODR) Reeulations, 2015 Sir / Madam, Pursuant to Regulation 30 of the SEBI (LODR) Regulations, 2015, Press Release dated 07.08.2026. is submitted herewith for your infbrmation & records please. 'l-hanking you, Yours faithfully. Iror Oil India Linritcd A.K. Sahoo Company Sccrctary & Compliancc Otllccr lrnc[: As abovc dfrAdorqfdqghq[-drd,EqI-6.3[rfi, /Regd. Office Duliajan, Pin - 786602, Dibrugarh, Assam, Tel.', +913742804510, +g1i742BOO421 Web: www.oil-india.com I CIN - L11101AS1959cO1001148 Date: August 07, 2026 OIL achieved highest-ever quarterly Standalone PAT, supported by 11% growth in crude oil production Oil India Limited, a Maharatna CPSE of Govt. of India, declared its financial results for Q1 FY27, in its 583rd meeting of the Board of Directors held on 7th August 2026. The Company registered its highest ever Standalone PAT at ₹ 2,870 Crore in Q1FY27 vis-à-vis ₹ 813 Crore in Q1 FY26, 2.5 times YoY growth supported by 11% growth in crude oil production and crude oil price realisation of USD 98.73/bbl in Q1FY27. OIL achieved a Consolidated PAT of ₹ 4,027 crore in Q1 FY27 vis-à-vis ₹ 2,047 crore in Q1 FY26, growth of 97% YoY. In its efforts towards ensuring Nation’s Energy Security, the Company produced 0.950 MMT of crude oil from its matured oilfields in Q1FY27 vis-à-vis 0.853 MMT in Q1 FY26. On 27th June, 2026, OIL has achieved highest ever daily crude oil production of 10,921 MT (84,109 bbl). OIL’s material subsidiary NRL achieved a robust 167% growth in PAT, rising to ₹ 1,305 crore in Q1FY27 from ₹ 488 crore in Q1FY26 with a GRM of $ 35.95/bbl vis-à-vis $ 5.02/bbl and Distillate Yield of 87.58% vis-à-vis 85.38%. The Company reported discovery of natural gas in the Vijaya Puram-3 exploratory well in the Andaman Basin, reaffirming the basin's hydrocarbon potential. Further, the Company successfully completed a highly deviated exploratory well, achieving the highest-ever horizontal displacement of 3,116 metres in an onshore well in Assam.