DEE DEVELOPMENT ENGINEERS LIMITED — Regulatory Filings 2025

Nov 8, 2025

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Date: 8[th] November, 2025

Listing Compliance Department

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

Sub: Audio Recording of Earnings Call on Financial Results for the Quarter and Half Year Ended 30[th] September, 2025

Dear Sir/ Madam,

Pursuant to Regulation 30 and 46(2)(oa) of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, the audio call recording of the Company’s Analyst Call/Investor presentation held on Friday, 7[th] November, 2025 to discuss the Unaudited Financial Results of the Company for the Quarter and Half Year ended 30[th] September, 2025 is available on the Company’s Website.

The above information is being made available on the website of the Company at https://www.deepiping.com/document/investor/audio/investor_call_held_on_7_November_202 5.mp3

This is for your information and record please.

Yours faithfully,

For DEE Development Engineers Limited

RANJAN KUMAR Digitally signed by RANJAN KUMAR SARANGI SARANGI Date: 2025.11.08 14:22:48 +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