Credit Rating- Others

CS:01:100/26-27 30th June 2026 BSE Ltd. National Stock Exchange of India Limited Phiroze Jeejeeboy Towers Exchange Plaza, 5th Floor 25th Floor, Dalal Street Plot No.C/1, G-Block Mumbai – 400 001 Bandra Kurla Complex, Bandra (E) Mumbai – 400 051 BSE Scrip Code: 500110 NSE Trading Symbol: CHENNPETRO ISIN: INE178A01016 Dear Sir, SUB: INTIMATION FOR CREDIT RATING ASSIGNED BY CREDIT RATING AGENCIES In accordance with the Regulation 30 read with Part A of Schedule III of SEBI (Listing Obligations and Disclosure Requirements) Regulations 2015, we would like to inform that the Credit Rating Agency, viz. Crisil Ratings has updated the bank-wise facility details in compliance with the Reserve Bank of India requirements, and there is no change in the facility rated, limited rated, ratings & others as per the previous Rating Rationale dated November 07, 2025. The updated bank wise Facilities with respect to the credit rating list is attached herewith and the same has also been hosted on the website of the Company https://www.cpcl.co.in/investors/share-holder-information/credit-rating/. The above is for your information and record please. Thanking you, Yours faithfully, for Chennai Petroleum Corporation Limited P.Shankar Company Secretary Credit Ratings assigned to Chennai Petroleum Corporation Limited for various debt instruments by Rating agencies are given below: Amount FACILITY / INSTRUMENT RATING AGENCY RATING OUTLOOK Name of Lender (Rs.Crore) Cash Credit& CRISIL AAA STABLE 3000 State Bank of India Fund-Based Facilities CRISIL AAA STABLE 525 ICICI Bank Limited Fund-Based Facilities CRISIL AAA STABLE 500 HDFC Bank Limited Fund-Based Facilities CRISIL AAA STABLE 500 Punjab National Bank Fund-Based Facilities CRISIL AAA STABLE 1000 Bank of India Fund-Based Facilities CRISIL AAA STABLE 1475 Indian Bank Fund-Based Facilities CRISIL AAA STABLE 475 IndusInd Bank Limited Fund-Based Facilities CRISIL AAA STABLE 300 The South Indian Bank Limited Letter of credit & Bank CRISIL A1+ 184 State Bank of India Guarantee Bank Guarantee CRISIL A1+ 25 IndusInd Bank Limited Proposed Long Term CRISIL AAA STABLE 0.9 Not Applicable Bank Loan Facility COMMERCIAL PAPERS CRISIL & ICRA A1+ 7500 & - Full interchangeability with packing credit