Communication with respect to Tax Deduction at Source (TDS) on Interim Dividend for the FY 2026-27 is attached herewith.

MAZAGON DOCK SHIPBUILDERS LIMITED (Formerly known as MAZAGON DOCK LIMITED) CIN: L35100MH1934GO1002079 (A Govt. of India Undertaking) Dockyard Road, Mumbai 400 010 Certified: ISO 9001-2015 Ref: SEC/BSENSEDISCL/51/2026-27 Date: 27 October 2026 To To BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G Dalal Street, Bandra Kurla Complex Mumbai– 400 001 Bandra (E), Mumbai – 400 051 Scrip Code: 543237 NSE Symbol: MAZDOCK Sub: Dividend Update – Interim Dividend for the Financial Year 2026-27 Dear Sir/ Madam, This is to inform that the Board at its meeting held on 27 October 2026 has approved payment of Interim Dividend of ₹5/- per equity share of ₹5/- each fully paid-up for the Financial Year 2026-27. The payment of dividend shall be subject to applicable tax deduction at source (TDS). Accordingly, an update on Tax Deduction at Source (TDS) on Dividend payout is enclosed herewith for the information of shareholders. A copy of the above communication is also be available on the Company’s website at the below mentioned link: https://mazagondock.in/images/pdf/TDS_on_Interim_dividend_FY2026-27.pdf This is for your information and record. Thanking You, Yours Faithfully, For MAZAGON DOCK SHIPBUILDERS LIMITED Lalatendu Acharya Company Secretary and Compliance Officer FCS-6569 Encl.: as above MAZAGON DOCK SHIPBUILDERS LIMITED (A Govt. of India Enterprise) Corporate Identity Number: L35100MH1934GOI002079 Registered and Corporate Office: Dockyard Road, Mumbai - 400010, Maharashtra, India Phone: 23762015, E-mail: investor@mazdock.com Website: www.mazagondock.in Dear Shareholder, Sub: Deduction of Tax at Source on Interim Dividend for FY 2026-27 The Company hereby informs that the Board of Directors has at its meeting held on Tuesday, 27 October 2026 declared Interim Dividend of Rs. 5/- (Rupees Five only) per equity share of Rs. 5/- each fully paid up for the Financial Year 2026-27. The Board of Directors at the above referred meeting has fixed Tuesday, 03 November 2026 as the Record Date for determining the eligibility of shareholders to receive the dividend. The shareholders, holding shares of the Company, in either electronic mode or in physical form, as on the Record Date, i.e., Tuesday, 03 November 2026 shall be eligible to receive the dividend. The payment of the interim dividend would be made to the eligible shareholders on or before 26 November 2026 as per the Companies Act, 2013. As you are aware, under the provisions of the Income Tax Act, 2025, dividend declared and paid by a company is taxable in the hands of shareholders and the company is required to deduct tax at source (TDS) from dividend paid to the shareholders at the applicable rates. Your Company shall therefore be required to deduct tax at source (TDS) at the time of making the payment of the said Interim Dividend. The tax deduction/ withholding tax rate would depend on the residential status of the shareholder and the exemptions as enumerated in the Act, subject to fulfilling the submission of the documentary requirements. Please note that, if the total dividend to be received by a resident individual during the financial year 2026-27 does not exceed Rs. 10000, then, no TDS shall be deducted and this shall include the future dividends, if any, which may be declared by the Board in the financial year 2026-27. The rate of tax deducted at source will vary depending on the residential status of the shareholder and documents registered with the Company/ RTA. For detail on TDS and documents to be submitted by the shareholders for various categories please refer Encl 1. The self-attested copies of the documents for the purpose of TDS are to be submitted by the shareholders to Alankit Assignment Limited (Registrar & Share Transfer Agents) at email id rta@alankit.com or to the Company at email id investor@mazdock.com by Tuesday, 03 November 2026. The Company will not be able to consider the documents/ communication sent after Tuesday, 03 November 2026. In case tax on dividend is deducted at a higher rate in the absence of receipt of the aforementioned details/documents, you would still have the option of claiming refund of the excess tax paid at the time of filing your Income Tax return by consulting your tax advisor. No claim shall lie against the Company for such taxes deducted. Shareholders will be able to see the credit of TDS in Form 26AS, which can be downloaded from their e-filing account at https://www.incometax.gov.in/iec/foportal/. Shareholders are requested to update their bank details with their Depository Participant (DP) at the earliest to ensure timely credit of dividends and to claim any unpaid/ unclaimed dividends lying with the Company. Details of unpaid/unclaimed dividends are available on the Company's website at https://mazagondock.in/English/pages/Dividend. Shareholders are advised to take timely action to avoid transfer of eligible unpaid/unclaimed dividends and corresponding shares to the Investor Education and Protection Fund (IEPF), In accordance with applicable provisions. We also request you to register/update your email IDs and mobile numbers with your DP. For assistance, shareholders may write to investor@mazdock.com or contact the Company's RTA, M/s Alankit Assignments Limited, 205-208 Anarkali Complex, Jhandewalan Extension, New Delhi - 110055; Website: www.alankit.com; Email: rta@alankit.com; Tel.: +9111425411000/42541234; Fax: +911123552001. Thanking you, For MAZAGON DOCK SHIPBUILDERS LIMITED Sd/- Lalatendu Acharya Company Secretary Encl: a/a Encl. 1 TDS ON DIVIDEND FOR INTERIM DIVIDEND FY 2026-27 With effect from April 1, 2020, dividend income has become taxable in the hands of shareholders. Pursuant to the requirement of Income Tax Act, 2025 (‘the IT Act’), the Company will be required to withhold taxes at the prescribed rates on the dividend paid to its shareholders. In this connection, the shareholders are requested to take note of the following: A. Resident Shareholders: (i) TDS shall be deducted at the rate of 10% under Section 393 of the IT Act on the amount of dividend declared and paid by the Company for the FY 2026-27 to resident shareholders provided, valid PAN of the shareholder is available-where dividend income is more than Rs. 10,000/- in a FY. (ii) However, TDS shall be deducted at higher rates as stated below in the following circumstances: • Valid PAN not available: If the PAN is not valid or valid PAN is not available with the Company’s Register of Members, TDS shall be deducted at the rate of 20% as per Section 397 of the IT Act. • PAN not linked to Aadhaar: ➢ In case of resident individual shareholders, who have not linked their PAN with Aadhaar, their PAN will be considered as inoperative. In such cases, the Company would be considering such PANs as invalid and will deduct taxes at higher rate in accordance with the provisions of Section 397 of the Income Tax Act, 2025 (the Act) ➢ The list of shareholders in whose case the PAN is not linked with their Aadhaar, shall be obtained from the functionality of the reporting portal made available by the Income Tax department. ➢ In case the individual shareholder who does not possess the Aadhaar number or the Enrolment ID is (i) not a citizen of India, or is (ii) aged eighty years or more at any time during the FY 2026-27 or is (iii) residing in the states/UT of Assam, Jammu & Kashmir and Meghalaya, then such shareholder may furnish a declaration to the said effect so that the TDS may be deducted at normal rates keeping in view the exemption provided by CBDT vide Notification No. 37/2017 dated 11.05.2017 for such person to link the same. (iii) In case of the following category of resident shareholders, no TDS shall be deducted or the TDS shall be deducted at lower rate, as the case may be, subject to submission of the documents specified below: • Form 121: In case where the shareholder provides valid Form 121, no TDS shall be deducted. Format for 121 [Showing first 8,000 characters — download PDF for full document]