DEE DEVELOPMENT ENGINEERS LIMITED — Regulatory Filings 2026

Feb 20, 2026

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Date: 20 February, 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: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”)

Pursuant to Regulation 30 of SEBI Listing Regulations, we would like to inform that the Company has been awarded Order from a New Customer, the name of which cannot be disclosed due to commercial issue.

The details as required under SEBI Listing Regulations read with Circular no. SEBI/HO/CFD/CFD-PoD-1/P-CIR//2023/123 dated July 13, 2023 are enclosed as Annexure I .

This is for your information and record please.

Yours faithfully,

For DEE Development Engineers Limited

Digitally signed by Ranjan Kumar Ranjan Kumar Sarangi Sarangi Date: 2026.02.20 12:01:54 +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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Annexure – I

Disclosure of Information pursuant to Regulation 30 of the SEBI Listing Regulations read with SEBI Master Circular no. SEBI/HO/CFD/PoD2/CIR/P/0155 dated November 11, 2024:

	S.NO.	PARTICULARS	PARTICULARS	DETAILS	DETAILS
	a	Name of the entity awarding the order(s) /contract(s)		OnelargestinternationalOEMConglomerate in Power Sector withheadquarters in the US. However, due tocommercial issue, the Company cannotdisclose the name of theCustomer
				Letter of Intent for supply of HRSG Pipingfor 16 Units
	b	Significant termsorder(s)/contract	and conditions of(s)awarded in brief	Letter of Intent for supply of HRSG Pipinfor 16 Units
	c	Whether order(s)dd bd	/ contract(s) have beentiittil tit	Intern	ational Entity
		awareyomesc/nernaona eny
	d	Nature of order(s)/ contract(s)		DDELwillsupplyprocesspipingsolutions for its various HRSGprojects.
	e	Whether domestic or international		International
	f	Time period by which theorder(s)/contract(s)is to be executed		The Letter of Intent is valid till 18 February2027.
	g	Broad consideration or size of theorder(s)/contract(s)		The aggregate of Orders will be more than40 million US dollars.
	h	Whether the promoter/ promoter group /group companies have any interest in theentity that awarded theorder(s)/contract(s)? If yes, nature ofinterest and details thereof		Not applicable
	i	Whether the order(s)/contract(s) would fallwithin related party transactions? If yes,the same is done at “arms’ length”		Not applicable

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