Certificate under Reg 74 of SEBI (DP) Regulations, 2018

Jost's Engineering Company Limited (Josts) Since 1907 Q C-7 Wagle Industrial Estate, Road No -12, Thane -400604, India @) +91-022-62674000 52 sales@josts.in @ www.josts.com 12t Qctober, 2026 Mr. S. Gopalan The Corporate Relationship Department Vice President BSE Limited National Securities Depository Ltd. Phiroze Jeejeebhoy Towers 4t Floor, “A” Wing, Trade World 1st Floor, New Trading Ring, Kamala Mills Compound Rotunda Building, Mumbai- 400001 Senapati Bapat Marg, Lower Parel, Mumbai- 400013 Central Depository Services (India) Ltd., Marathon Futurex, Unit No. 2501 25th Floor, W-Wing, Mafatlal Mills Compound N.M.Joshi Marg, Lower Parel, Mumbai- 400013 Dear Sir, Scrip Code: 505750 Subject: Certificate under Regulation 74(5) of the SEBI (Depositories Participants) Regulations, 2018 for the quarter ended 30t September, 2026. With reference to captioned subject, we are enclosing herewith a Certificate pursuant to Regulations 74(5) of the SEBI (Depositories Participants) Regulations, 2018 for the quarter ended 30t September, 2026 as received from our RTA namely, M/S. Bigshare Services Private Limited. Kindly take the same on record. Thanking You, Yours Faithfully, For Jost’s Engineering Company Limited Babita Kumari Company Secretary & Compliance Officer M. No.: A40774 Encl: As above Regd. Office: Great Social Building, 60 Sir Phirozeshah Mehta Road, Mumbai- 400001, India | +91-022-22694956 = jostsho@josts.in CIN: L2ZB100MH1907PLC0O00252 Ref No. BSS/Reg 74(5)/25-26 Date: 06/10/2026 JOSTS ENGINEERING COMAPNY LIMITED_EQ NEW FV RE 1 (INE636D01041) Plot No. – 3, S. No. – 126, Paud Road, Pune-411038 Dear Sir/Madam, Sub: Certificate under Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018 for the quarter ended 30th September, 2026. In reference to the above – captioned regulation we hereby confirm that the securities received from the depository Participants for dematerialization up to 30th September, 2026 were confirmed (accepted/rejected) to the depositories by us and that securities comprised in the said certificates have been listed on the stock exchange where the earlier issued securities are listed. We hereby confirm that the security certificates received for dematerialization have been mutilated & cancelled after due verification by the depository Participant and the name of the depositories have been substituted in register of members as registered owner within 15 days of receipt of certificate of securities. 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