Please find enclosed herewith the intimation regarding the Resignation of Statutory Auditor of the Company

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: 06.08.2026 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 Resignation of Statutory Auditors under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. Dear Sir/mam, Pursuant to Regulation 30 read with Schedule III of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) and SEBI Master Circular No. HO/49/14/14(7)2025-CFDPOD2/I/3762/2026 dated January 30, 2026, we wish to inform you that M/s. Harsh Jain & Associates, Chartered Accountants (Firm Registration No. 007639C), the Statutory Auditor of the Company, has tendered its resignation as the Statutory Auditor of the Company vide its resignation letter dated August 06, 2026, citing the reasons mentioned therein which would come into effect from Closing of business hours of the day of ensuring Board Meeting to be held on 14th August, 2026 for the purpose of consideration and approval of unaudited financial results for the Quarter ended on 30th June , 2026. Thus post submission of Limited Review Report for the Quarter ended on 30.06.2026 and after furnishing all requisite certifications and other document for the aforesaid period the resignation of auditor will come into effect. The details as required under Regulation 30 read with Schedule III of the SEBI Listing Regulations and SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 are enclosed herewith as Annexure – I. A copy of the resignation letter dated August 06, 2026, as received from M/s. Harsh Jain & Associates, Chartered Accountants, is enclosed herewith as Annexure – II. The Audit Committee and the Board of Directors shall take note of the resignation of the Statutory Auditor at their ensuing meeting(s) and take necessary steps to fill the casual vacancy in accordance with the applicable provisions of the Companies Act, 2013 and the SEBI Listing Regulations. Further, the resigning Statutory Auditor has not raised any concerns with respect to the management of the Company, and there is no material reason for the resignation other than those stated in the resignation letter. Accordingly, the disclosure regarding the views of the Audit Committee is not applicable. 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 Kindly take the above information on record. 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 I Disclosure with respect to resignation by Statutory Auditor of the Company pursuant to SEBI Listing Regulations and SEBI Master Circular No. HO/49/14/14(7)2025- CFDPOD2/I/3762/2026, dated January 30, 2026 read with Schedule III of the SEBI Listing Regulations is as follows: Sr No. Particulars Details 1. Name of the Company Simplex Castings Limited 2. Name of the Auditor M/s. Harsh Jain & Associates, (Firm Registration No. 007639C), 3. Reason for change viz. appointment, re- Due to our pre-occupation with appointment, resignation, removal, death or other professional commitments. otherwise; 4. Date of appointment /reappointment/ August 14, 2026, (i.e. from the cessation/Resignation Closing business hours of forthcoming Board meeting) 5. Brief profile (in case of appointment) Not Applicable 6. Disclosure of relationships between directors Not Applicable (in case of appointment of a director) 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 HARSH JAIN & ASSOCIATES HEAD OFFICE Chartered Accountants "Saroj Chambers" Phone No.: 0788-2325482 (Office) Opp. Gurudwara, Station Road, Mobile No. : 93296-997 00 Durg (C.G.) E-mail: caharsh.jain@gmail.com Pin Code: 491001 Date: 06 August 2026 The Board of Directors Simplex Castings Limited, Bhilai Subject: Resignation as Statutory Auditors Dear Sir,Madam, We hereby tender our resignation as the Statutory Auditors of Simplex Castings Limited with effect from the closing business hours of forthcoming Board Meeting to bi held on i4th August 2026, due to our pre-occupation with other professional commitments. In view of our existing professional commitments, we find ourselves unable to continue as the Statutory Auditors of the -ompany and, accordingly, consider it appropriate to resign from the office of statutory Auditors. We have completed the Statutory Audit of Financial Statements for the year ended 3 l st March 2026 and issued our Audit Report on the said audited Financial Statements on i8th Muy 2026 and,are in the process of issuance of Limited Review report on the financial results for the quarter ended 30th June 2026. Our resignation will be effective from the closing business hours of 14th August 2026. We sincerely appreciate the cooperation and support extended to us by the Board of Directors, the management, and the staff of the Company during our tenure as the Stafutory Auditors. We request the Company to take note of our resignation and complete all necessary statutory and regulatory formalities in this regard. We wish the Company continued success in all its future endeavours. Thanking you. Yours faithfully, For Harsh Jain & Associates Chartered Accountants CA Harsh Jain Partner Membership No.:076736 Firm Registration No.: 0007639C Place: Durg, Chhattisgarh HARSH JAIN & ASSOCIATES HEAD [Showing first 8,000 characters — download PDF for full document]