Find attached herewith Reg 74(5) for the quarter ended 30th September, 2026.

Date: 10-10-2026 Corporate Relations Department BSE Limited 2nd Floor, P. J. Towers Dalal Street Mumbai – 400 001 Scrip Code: 544310 ISIN- INE00GK01023 Sub: Certificate under Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018 Dear Sir/ Madam, In compliance with the Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018, we are forwarding herewith a copy of the Certificate, received from M/s Bigshare’ Services Private Limited, the Registrar and Share Transfer Agent of the Company, for the quarter ended 30th September 2026. We hereby request you to take the above information on your record. Thanking you, Yours sincerely, For Yash Highvoltage Limited Bhoomi Talati Company Secretary & Compliance O(cid:431)icer FCS:12828 Bigshare Services Pvt. Ltd. Ref No. BSS/SE-AU-030 Date: 09/10/2026 YASH HIGHVOLTAGE LIMITED INE00GK01023 841 B 1KHAKHARIYA SAVLI,VADODARA GUJARAT INDIA 391510 Sub: Certificate under Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018 for the quarter ended 30th September 2026 Dear Sir, With reference to the captioned regulation, we hereby confirm that the said Regulation is not applicable to the Company, as the entire holding of the Company’s shares are in demat form, and we have not received any request from any members of the Company for rematerialisation during the quarter ended on 30th September 2026. We request you to kindly take note of the above in your records. Thanking you, Yours faithfully, For Bigshare Services Pvt. Ltd., Sandeep More Authorised Signatory CIN : U99999MH1994PTC076534 Regd. Office: Office No S6-2, 6th Floor, Pinnacle Business Park,Next to Ahura Centre, Mahakali Caves Road, Andheri (East) Mumbai - 400 093. Tel. : +9122 6263 8200 • Fax : +9122 6263 8299 • Email : info@bigshareonline.com • Website : www.bigshareonline.com