DEE DEVELOPMENT ENGINEERS LIMITED — Regulatory Filings 2026

Feb 9, 2026

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Date: 9[th] February 2026

Listing Compliance Department

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

Subject: Intimation of Updates on the Order Book of the Company

Dear Sir/Ma’am,

Please find enclosed herewith as “Annexure-A” the updates on the Order Book of the Company for the period ranging from 1[st ] January, 2026 to 31[st] January, 2026.

The above information is being made available on the website of the Company www.deepiping.com.

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: 2026.02.09 08:27:37 +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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----- Start of picture text ----- "Annexure A" INR in CroresNature of Name of Customer's Opening Order Inflow during Executed Closing as Cumulative CumulativeActivity Company Industry As on 1st January 2026 including during on 31st Order Inflow OrderJanuary, Amendments/Currency January January, for FY 2025- Executed for2026 Fluctuations 2026 # 2026 26 (as of FY 2025-26 (asJanuary 31, of January 31,2026) 2026)Power 416.56 50.57 6.86 198.13460.27 494.08DEE India $ Oil & Gas 766.19 30.31 44.93 409.20751.57 213.24Pipings Others* 5.28 6.11 4.51 6.89 42.81 39.41Power 59.71 -3.48 7.31 50.17DEE 48.92 73.40Thailand##Oil & Gas 13.91 -0.81 1.33 58.5811.76 29.24DEEHeavy Fabricom Power 40.54 5.70 6.05 40.19 66.19Fabrication 60.36IndiaMolsieveGas Plants Others* 0.55 0.08 0.32 0.31 4.20Designs Ltd 4.05DEE India** - 3.83 3.83 - 29.8129.81PowerMalwa- 0.46 0.46 - 12.82Power** 12.82Total 1,302.73 92.77 75.59 1,319.91 868.51959.81----- End of picture text -----

$ We are also L1 for orders worth INR 391 crores from reputed clients, for which formal purchase orders are expected to be awarded shortly. For clarity, this 391 crores has not been included in the above table.

• Other Include Process, Chemical, scrap, rent etc.

** For ease of understanding, we have considered the order inflow and execution amount to be the same for this period. There are Power Purchase Agreements (PPA) in place with Punjab State Power Corporation Limited for our Biomass Power Generation business. The average billing for the preceding two fiscal years has been ₹80 crore per year.

The Hon'ble Punjab State Electricity Regulatory Commission (PSERC) had passed an interim Order revising the tariff of Malwa Power Private Limited for a fixed tariff of Rs. 3.50 per unit as the PPA was expired on 26.04.2025, however, the Company had filed the review petition for revision of these tariff rates. Vide PSERC's order dated 18th October 2025, The PPA has been extended for another 10 years. Punjab State Power Corporation Limited (PSPCL) has prefered an appeal against the order of Hon'ble PSERC's on determination of rate of tariff and renewal of PPA, Malwa Power Private Limited has filed caveat in Appeal. The Hon'ble APTEL in its Order dated 08 December 2025 has confirmed to supply the power @ Rs. 3.50 per units until finally decided by it.

Tariff of DEE Development Engineers Limited (Power Division) were revised to Rs. 5.877 per unit by Hon'ble PSERC vide its order dated 20.08.2025, however, the Company had filed appeal before hon'ble High Court of Punjab & Haryana against the order of Hon'ble PSERC. The Hon’ble High Court, vide its order dated 23rd October, 2025, has stayed the operation of the Commission’s order. As a result:

a) The Company shall continue to supply electricity to PSPCL at the prevailing tariff of ₹7.47 per unit.

b) Any recovery claimed by PSPCL on account of tariff differential shall remain withheld until the final disposal of the matter by the Hon’ble High Court.

The total value of orders executed during the period represents the aggregate amount of invoices raised on customers. However, the revenue recognized under Indian GAAP (Ind AS 115 – Revenue from Contracts with Customers) may differ from the invoiced amount, owing to the application of various Incoterms and performance obligations under respective contracts. Consequently, revenue recognition is aligned with the transfer of control of goods or services to the customer, and not merely based on invoicing milestones. Accordingly, the revenue recognized during the reporting period may be lower than the total invoiced value for the same period.

Exchange rates for existing export orders of DEE Thailand considered INR 2.92 per THB as on 31st January 2026. source link below: https://www.oanda.com/currency-converter/en/?from=THB&to=INR&amount=1

Digitally signed by RANJAN KUMAR RANJAN KUMAR SARANGI SARANGI Date: 2026.02.09 08:27:59 +05'30'

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