Please find the Intimation

Simplex Castings Ltd. [An MSME Unit (Small), Reg. No. UDYAM-CG-05-0000018] Registered Office : 32, Shivnath Complex G.E.Road, Supela Bhilai – 490023 (C.G.) India Phone : +91-788-2290484/85 Fax : +91-788-2285664 E-Mail : CFO@simplexcastings.com Website : www.simplexcastings.com CIN:L27320CT1980PLC019535 GSTIN: 22AABCS4650E1ZT Date:14-08-2026 To, To, The Manager The Manager Department of Corporate Services Calcutta Stock Exchange BSE Limited Address: 7, Lyons Range, PJ Towers, Dalal Street Dalhousie, Kolkata700001, Mumbai-400001 West Bengal Scrip Code: 513472 Scrip Code: 29066 Sub: Change in authorization for determining materiality of an event or information and its disclosure - Intimation under Regulation 30(5) of the SEBI (LODR) Regulations, 2015. Dear Sir/Madam, This is with reference to appointment of Mr Chandra Shekhar Sahu , Company Secretary with effect from 14th August, 2026 . In view of the above and in terms of Regulation 30(5) of SEBI Listing Regulations, 2015, it is to inform you that following Key Managerial Personnel (KMP) of the Company are now authorized by the Board to determine the materiality of an event or information and making disclosures to the Stock Exchanges: SL Name of KMP & Contact No NO Designation 1. Sangeeta K Shah Registered Office: Managing Director Plot No- 32, Shivnath Complex, 2. Ketan Moolchand Shah GE Road, Supela, Bhilai-490023 Whole Time Director 3. Avinash Hariharno Email: Whole Time Director investors@simplexcastings.com 4. Rajesh Kumar Acharya Tel:07882290483/84/85 Chief Financial officer 5. Chandra Shekhar Sahu Company Secretary Thanking you. FOR, SIMPLEX CASTINGS LIMITED Ketan Moolchand Shah (Whole Time Director) DIN- 00312343 OFFICE ADDRESS PHONE FAX E-MAIL Regd. Office : 32, SHIVNATH COMPLEX GE ROAD SUPELA BHILAI -490023(CG), INDIA 0788-2290485 marketing@simplexcastings.com Kolkata : 3B, MANSAROWAR, CAMAC STREET 3rd FLOOR KOLKATA - 700016 (W.B.) INDIA 7225057701 033-22493251 kol@simplexcastings.com Bhilai (Plant) : 5, INDUSTRIAL ESTATE, BHILAI - 490026 (C.G.) INDIA 0788-2290484 0788-4034188 marketing@simplexcastings.com Rajnandgaon (Plant): 223/2,224INDUSTRIAL ESTATE, TEDESARA, RAJNANDGAON - 491441(C.G.) INDIA 9200056703 0788-2285664 marketing@simplexcastings.com