Corrigendum

ON TH E LETTEHEAD OF THE COMPANY Date: June 18, 2026 To, To, BSE Limited National Stock Exchange of India Limited Department of Corporate services Exchange Plaza, Phirojee Jeejeebhoy Towers Plot no. C/1, G Block, Dalal Street, Mumbai – 400023 Bandra-Kurla Complex, Bandra (E), Mumbai – 400051 Scrip Code: 544198 Symbol: DEEDEV Subject: Intimation under Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, Corrigendum to the Notice of Extra Ordinary General Meeting (“EGM Notice”). Dear Sir/Madam, In continuation to our intimation dated June 03, 2026, we are hereby submitting the Corrigendum to the Notice of the Extra Ordinary General Meeting (“EGM”) scheduled to be held on Saturday, June 27, 2026, at 01:00 P.M. (IST) through Video Conferencing (“VC”)/Other Audio-Visual Means (“OAVM”). A Corrigendum has been issued to inform the Shareholders of the Company regarding the changes in Item No. 1 of the EGM Notice. The same is enclosed herewith. All other particulars and details mentioned in the EGM Notice shall remain unchanged. The Corrigendum shall be read in conjunction with the EGM Notice dated June 03, 2026, together with Explanatory Statement. This Corrigendum is also available on the Company’s website viz. www.deepiping.com , on the website of NSE at www.nseindia.com, and on the website of BSE at www.bseindia.com. All Capitalized words and expressions used but not defined herein shall have the same meaning as assigned to them in the EGM Notice. You are requested to take the same on your record. Thanking you, For DEE Development Engineers Limited Ranjan Kumar Sarangi Company Secretary & Compliance Officer Membership No.: F8604 Address: Unit 1, Prithla - Tatarpur Road, Village Tatarpur Dist. Palwal, Faridabad, Haryana – 121 102 DEE DEVELOPMENT ENGINEERS LIMITED CIN: L74140HR1988PLC030225 Registered Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Telephone: +91 1275 248200, Fax: +91 1275 248314, Email: info@deepiping.com, Website: www.deepiping.com CORRIGENDUM TO THE NOTICE OF THE 1ST EXTRA ORDINARY GENERAL MEETING OF THE FINANCIAL YEAR 2026-27 Corrigendum to the Notice of the 1st Extra Ordinary General Meeting (“EGM Notice”) of the Financial Year 2026-27 dated June 03, 2026, for the members of DEE Development Engineers Limited (“the Company”) to be held on Saturday, June 27, 2026, at 01:00 P.M. IST through Video Conferencing (“VC”)/ Other Audio - Visual Means (“OAVM”). Dear Members, This is in continuation to the Notice dated June 03, 2026, convening Extra Ordinary General Meeting of the members of DEE Development Engineers Limited (“the Company”) to be held on Saturday, June 27, 2026, seeking approval for matter contained in the said Notice. The Notice of the EGM was dispatched to the members of the Company in due compliance with the provisions of the Companies Act, 2013, and rules made thereunder, read with circulars issued by Ministry of Corporate Affairs and Securities and Exchange Board of India. In this regard we would like to mention that regarding Item No. 1 of the aforesaid notice, the Company had filed application with BSE Limited (“BSE”) and National Stock Exchange of India Limited (“NSE”) (collectively referred to as the “Stock Exchanges”), seeking In-principle approval in relation to the proposed Preferential Issue of Equity Shares for which the approval of the shareholders is being sought. Thereafter, the Company has received certain observations from the Stock Exchanges. This Corrigendum is being issued pursuant to the observations of the Stock Exchanges. All other particulars and details as mentioned in the EGM Notice shall remain unchanged. The Corrigendum shall be read in conjunction with the EGM Notice dated June 03, 2026, together with Explanatory Statement. This Corrigendum is also available on the Company’s website viz. www.deepiping.com, and on the website of the Stock Exchanges at www.bseindia.com & www.nseindia.com. All capitalized words and expressions used but not defined herein shall have the same meaning as assigned to them in the EGM Notice. 1. Kindly read point no. 11 of Explanatory Statement of EGM Notice as under: Post Issue Pre-Issue Shareholding Shareholding Sr. No. Category No. of Equity No. of Equity Shares Shares A Promoters and Promoter Group Holding 1 Indian Individuals/Hindu Undivided Family 4,10,73,606 59.30 4,14,72,012 55.12 Any Other (specify) 75,32,775 10.88 75,32,775 10.01 2 Foreign - - - - Total (A1+A2) 4,86,06,381 70.18 4,90,04,787 65.13 B1 Non-Promoter Holding – Institutions Institutions (Domestic) 0 0.00 0 0.00 Mutual Funds 89,71,835 12.95 92,70,639 12.32 Venture Capital Funds - - - - Alternate Investment Funds 6,61,896 0.96 35,42,875 4.71 Sub Total B1 96,33,731 13.91 1,28,13,514 17.03 B2 Institutions (Foreign) - Foreign Portfolio Investors Category I 6,54,616 0.95 26,64,079 3.54 Foreign Portfolio Investors Category II 24,696 0.04 24,696 0.03 Sub Total B2 6,79,312 0.98 26,88,775 3.57 B3 Non – Institutions - KMP 2,880 0.00 2,880 0.00 2a Individuals (share Capital up to Rs. 2 lakhs) 79,38,012 11.46 79,38,012 10.55 2b Individuals (share Capital in excess of Rs. 2 lakhs) 15,37,888 2.22 16,07,608 2.14 2c Non-Resident Indians (NRIs) 2,05,715 0.30 2,25,635 0.30 2d Bodies Corporate 2,89,840 0.42 5,88,644 0.78 2e Any Other (specify) 3,69,583 0.53 3,69,583 0.49 Sub-Total (B3) 1,03,43,918 14.93 1,07,32,362 14.26 Total (B1+B2+B3) 2,06,56,961 29.82 2,62,34,651 34.87 C1 Shares underlying DRs 0 0.00 0 0.00 C2 Shares held by Employee Trust 0 0.00 0 0.00 C Non-Promoter – Non-Public 0 0.00 0 0.00 Grand Total (A+B+C) 6,92,63,342 100.00 7,52,39,438 100.00 Notes: 1. These percentages have been calculated on the basis of post-preferential share capital of the Company i.e. ₹75,23,94,380/- divided into 7,52,39,438 Equity Shares of face value of ₹10/- each. 2. Post shareholding structure may change depending upon any other corporate action in between. 2. Kindly read Annexure A, B & C of EGM Notice as under: Name of the Category Name of Ultimate Pre-Issue Equity Post issue Proposed Beneficial Owners Shareholding Shares Shareholding Allottees Structure to be Structure (1) & (2) No. of %age allotted No. of %age Shares Shares Krishan Lalit Promoter Not Applicable as allottee 3,52,00, 50.82 3,98,406 3,55,98,772 47.31 Bansal is a Natural person 366 Kotak Public Not Applicable 45,12,28 6.51 2,98,804 48,11,092 6.39 Mahindra 8 Trustee Co Limited A/c Kotak Multi Asset Allocation Fund WhiteOak Public Ashish Pradip Somaiya 0 0.00 86,902 86,902 0.12 Capital Equity Fund WhiteOak Public Ashish Pradip Somaiya 0 0.00 7,82,123 7,82,123 1.04 Capital India Opportunities Fund Ashoka Public 1. Tan Chee kaing 0 0.00 4,72,936 4,72,936 0.63 WhiteOak 2. Lorcan Murphy ICAV – 3. Elijabeth Beazley Ashoka 4. Benjamim Whiteoak Emerging Markets Equity Fund Ashoka Public 1. Tan Chee kaing 0 0.00 72,266 72,266 0.10 WhiteOak 2. Lorcan Murphy ICAV – 3. Elijabeth Beazley Ashoka 4. Benjamim Whiteoak Emerging Markets Equity Ex China Fund TCW White Public 1. Stern, Marc, Irwin 0 0.00 6,403 6,403 0.01 Oak Emerging 2. Villa, Richard, Manuel Markets 3. Koch, Kathryn, Agnes Equity Fund 4. Bowden, Andrew, John 5. Stolfi, Melissa, Lynn 6.Kung, Jessica, H 7.Jones, Kathryn, Lynn Ashoka India Public Not Applicable as it is a 0 0.00 1,99,418 1,99,418 0.27 Equity publicly listed on London Investment stock exchange Trust PLC Ashoka Public Not Applicable as it is a 0 0.00 27,443 27,443 0.04 WhiteOak publicly listed on London Emerging stock exchange Market Trust India Acorn Public Juan Fadrique Arias 0 0.00 90,561 90,561 0.12 Fund Ltd Davila Serrat-Valera ValueQuest Public 1. Ravindra Dharamshi 0 0.00 7,42,031 7,42,031 0.99 India G.I.F.T. 2. Hemang Dharamshi Fund ValueQuest Public 1. Ravindra Dharamshi 0 0.00 9,96,020 9,96,020 1.32 India Inflexion 2. Hemang Dharamshi Fund 360 ONE PIPE Public 1. Karat Venugopal 0 0.00 4,98,007 4,98,007 0.66 Fund Parameshwar 2 [Showing first 8,000 characters — download PDF for full document]