Commencement of commercial production/operations

CHAMBAL FERTILISERS AND CHEMICALS LIMITED Ref. No. CFCL/SE/2026-27/43 August 20, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G, 25th Floor, Dalal Street Bandra Kurla Complex, Mumbai – 400 001 Bandra (E) Mumbai – 400 051 Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (SEBI LODR) Dear Sirs, This is in continuation to our earlier letters of even reference regarding execution of the project to set up a plant for manufacture of Technical Ammonium Nitrate, including a plant to manufacture Weak Nitric Acid (‘Project’), at the Company’s existing site at Gadepan, District Kota (Rajasthan). In the above connection, we have to inform that the commercial production of Technical Ammonium Nitrate - prilled High Density Ammonium Nitrate (HDAN) has commenced w.e.f. August 20, 2026. Kindly take the same on your record. Thanking you, Yours faithfully, For Chambal Fertilisers and Chemicals Limited (Tridib Barat) Vice President - Legal & Company Secretary Corporate One, First Floor, 5, Commercial Centre, Jasola, New Delhi - 110 025 • Tel.: 91-11-46581300, 41697900 • Fax: 91-11-40638679 Email : corporate@chambal.in • www.chambalfertilisers.com • CIN: L24124RJ1985PLC003293 Regd. Office : Gadepan, District Kota, Rajasthan -325 208 Tel No.: 91-744-2782915 ; Fax No : 91-7455-274130