Please find the disclosure of order recieved from Rashtriya Ispat Nigam Ltd.

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: 03.08.2026 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: Intimation of Order Received from Rashtriya Ispat Nigam Ltd. Dear Sir/Madam, In pursuance Regulation 30 read with Para-B of Part-A of Schedule-III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we would like to inform you that Simplex Castings Limited has received an order worth Rs. 7,08,26,283/- (Exclusive of GST) from Rashtriya Ispat Nigam Ltd. The details of the above orders as required under SEBI Circular SEBI/HO/CFD/CFD-PoD- 1/P/CIR/2023/123 dated July 13, 2023, are enclosed as Annexure–A This is for your information a record. Thanking You, Yours Faithfully For, Simplex Castings Limited Sangeeta K Shah Managing Director DIN: 05322039 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 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 Annexure–A Details pursuant to Regulation 30 of SEBI Listing Regulations, 2015 and SEBI Circular SEBI/HO/CFD/CFD-Pod-1/P/CIR/2023/123 dated July 13, 2023 Sr. No Particulars Details Name of the entity to which 1. Rashtriya Ispat Nigam Ltd order(s)/contract(s) is awarded 2. Whether order(s) / contract(s) Domestic Entity have been awarded by domestic/ international entity 3. Nature of order(s)/contract(s) Assembly Components 4. Significant terms and conditions of the 137 EA - FLASH PLATE ASSEMBLY Order / Contract awarded, in brief 53EA - FRAME ASSEMBLY Time period, if any, associated with 5. The work shall be completed within 7-8 months the order(s)/contract(s) from the issue of work or purchase order 6. Broad commercial consideration or Rs. 7,08,26,283/- (Exclusive of GST) size of the order(s)/contract(s); Whether the promoter/ promoter 7. group/group companies have any interest in the entity that awarded No the order(s)/contract(s)? If yes, nature of interest land details thereof; 8. Whether the order(s)/contract(s) would fall within related party No transactions? If yes, whether the same is done at “arm’s length” 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