DEE DEVELOPMENT ENGINEERS LIMITED — Regulatory Filings 2025

Aug 4, 2025

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Date: 4[th] August, 2025

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: Intimation of Board Meeting under Regulation 29 of SEBI (Listing Obligations and Disclosures Requirements) Regulations, 2015

Dear Sir/Madam,

Pursuant to Regulation 29 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, this is to inform that a meeting of the Board of Directors of the Company will be held on Monday, 11[th] August, 2025, to inter-alia consider and approve the Un-audited Standalone and Consolidated Financial Results of the Company for the 1[st] Quarter ended 30[th] June, 2025 and any other matters.

Further, as already informed, the Trading Window for dealing in securities of the Company has already been closed and shall re-open after the expiry of 48 hours from the declaration of the Un-audited Financial Results for the quarter ended 30[th] June, 2025 for the Designated Persons i.e. Directors, Identified Employees/Persons, Key Managerial Personnel, Promoters of the Company including the Immediate Relatives of the Designated Persons of the Company and for the Connected Persons covered under the Company’s Code of Conduct to Regulate, Monitor, and Report Trading by Insiders.

This is for your information and record please.

Yours faithfully,

For DEE Development Engineers Limited

Digitally signed by RANJAN KUMAR SARANGI RANJAN DN: c=IN, st=Haryana, 2.5.4.20=994f1424bc4df049edf35de69f080db9b68 dfc64081e2119d8b0be6908e14423, postalCode=121002, street=A2-405 Summer Palm Sector 86 Old Faridabad, KUMAR pseudonym=6c5bafb8e053d033c74fa3ad9f17935a, serialNumber=9877b65cc26b4d48d2d8637b4b969 4d6c844494b5764c3373331c8380a7d8d8c, SARANGI o=Personal, cn=RANJAN KUMAR SARANGI Date: 2025.08.04 14:31:06 +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