General Updates

Ref No: APSEZL/SECT/2026-27/67 September 1, 2026 BSE Limited National Stock Exchange of India Limited Floor 25, P J Towers, Exchange Plaza, Dalal Street, Bandra Kurla Complex, Mumbai – 400 001 Bandra (E), Mumbai – 400 051 Scrip Code: 532921 Scrip Code: ADANIPORTS Sub: Intimation under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (‘SEBI Listing Regulations’) - Incorporation of step-down subsidiary. Dear Sir/Madam, In reference to the captioned subject, we would like to inform that Astro Offshore PTE Limited, step down subsidiary of the Company has incorporated a Wholly Owned Subsidiary (“WOS”), namely, Astro Offshore MESA Company on August 31, 2026. The proposed entity has been established to conduct its offshore operations locally in line with the Company’s marine strategy to diversified its fleet globally. This development further reinforces APSEZ’s strategy to build one of the world’s largest integrated marine platforms, while expanding the geographic reach of its marine business. The details as required under SEBI Listing Regulations read with SEBI Master Circular bearing reference number HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 are attached as Annexure A. Kindly take the same on your record. Thanking you, Yours faithfully, For Adani Ports and Special Economic Zone Limited Kamlesh Bhagia Company Secretary Encl.: As above Adani Ports and Special Economic Zone Ltd Tel +91 79 2555 4444 Adani Corporate House, Shantigram, Fax +91 79 2555 7177 Nr. Vaishno Devi Circle, S. G. Highway, Investor.apsezl@adani.com Khodiyar, Ahmedabad - 382421 www.adaniports.com Gujarat, India CIN: L63090GJ1998PLC034182 Registe red Office: Adani Corporate House, Shantigram, Nr. Vaishno Devi Circle, S. G. Highway, Khodiyar, Ahmedabad - 382421, Gujarat, India Annexure – A Details under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read along with the SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 Sr. Particulars Details 1. Name of the entity, date & country • Name: Astro Offshore MESA of incorporation, etc. Company • Date of Incorporation: August 31, 2026 • Country of Incorporation: Kingdom of Saudi Arabia 2. Name of holding company of the Astro Offshore MESA Company is a incorporated company and relation wholly owned subsidiary of Astro with the listed entity Offshore PTE Limited, step-down subsidiary of the Company. 3. Industry to which the entity being Ships Management and Operation incorporated belongs 4. Brief background about the entity Ships Management and Operation incorporated in terms of products / line of business 5. Brief details of any governmental or Not Applicable regulatory approvals required for the incorporation; 6. Nature of consideration - whether Not Applicable cash consideration or share swap and details of the same 7. Cost of subscription / price at which Astro Offshore MESA Company is the shares are subscribed incorporated with a capital of SAR 50,000. 8. Percentage of shareholding / Astro Offshore PTE Limited holds control by the listed entity and / or 100% share of Astro Offshore MESA number of shares allotted Company. Adani Ports and Special Economic Zone Ltd Tel +91 79 2555 4444 Adani Corporate House, Shantigram, Fax +91 79 2555 7177 Nr. Vaishno Devi Circle, S. G. Highway, Investor.apsezl@adani.com Khodiyar, Ahmedabad - 382421 www.adaniports.com Gujarat, India CIN: L63090GJ1998PLC034182 Registe red Office: Adani Corporate House, Shantigram, Nr. Vaishno Devi Circle, S. G. Highway, Khodiyar, Ahmedabad - 382421, Gujarat, India