DEE DEVELOPMENT ENGINEERS LIMITED — Regulatory Filings 2026

Apr 13, 2026

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Date: 10[th] April, 2026

Listing Compliance Department

BSE LimitedPhiroze Jeejeebhoy Tower,Dalal Street,Mumbai – 400001ScripCode:544198	The National Stock Exchange of India Ltd.Exchange Plaza, Plot No. C/1, G Block,Bandra Kurla Complex, Bandra (E),Mumbai – 400051Symbol:DEEDEV

Sub: Certificate under Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018 for the quarter ended 31[st] March, 2026

Dear Sir/ Madam,

ln compliance with Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018, please find enclosed herewith a copy of the Certificate received from MUFG Intime India Private Limited (Formerly known as Link Intime India Private Limited), Registrar and Share Transfer Agent of the Company, for the 4[th] quarter ended 31[st] March, 2026.

This is for your information and record please

Yours faithfully,

For DEE Development Engineers Limited

RANJAN Digitally signed by RANJAN KUMAR KUMAR SARANGI Date: 2026.04.10 SARANGI 15:52:38 +05'30'

_________________________________________ Ranjan Kumar Sarangi Company Secretary and Compliance Officer Membership No.: F8604 Address: Unit 1, Prithla - Tatarpur Road, Village Tatarpur Dist. Palwal, Faridabad, Haryana – 121 102

DEE DEVELOPMENT ENGINEERS LIMITED

Regd. Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Works: Unit 1, 2 & 3, Village Tatarpur, Dist. Palwal, Haryana- 121102, India T: +91 1275 248200, F: +91 1275 248314, E: info@deepiping.com, W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA

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MUFG Intime India Private Limited (Formerly Link Intime India Private Limited) CIN: U67190MH1999PTC118368 Registered Address : C-101, Embassy 247, L.B.S. Marg, Vikhroli (West), Mumbai - 400083.

Tel : +91 22 4918 6000 www.in.mpms.mufg.com

To, The Compliance Officer/ Company Secretary DEE DEVELOPMENT ENGINEERS LIMITED UNIT 1, PRITHLA TATARPUR ROAD VILLAGE TATARPUR, DIST.PALWAL FARIDABAD HARYANA FARIDABAD PINCODE : 121102

Date : April 3,2026

Dear Sir/Madam,

Subject : Confirmation Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018.

In reference to the above captioned regulation, we hereby confirm that the securities received from the depository participants for dematerialisation during the quarter ended 31st March 2026, were confirmed (accepted/rejected) to the depositories by us and that securities comprised in the said certificates have been listed on the stock exchanges where the earlier issued securities are listed.

We hereby also confirm that the security certificates received for dematerialisation have been confirmed/rejected and the security certificates received were mutilated and cancelled after due verification by the depository participant and the name of the depositories have been substituted in the register of members as the registered owner within the prescribed timelines. We request you to kindly take note of the above in your records.

Thanking you,

Yours faithfully,

For MUFG Intime India Private Limited

(Formerly Link Intime India Private Limited)

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Ashok Shetty Sr. Vice President-Corporate Registry

MUFG Intime India Private Limited

A part of MUFG Corporate Markets, a division of MUFG Pension & Market Services