Pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements)Regulations, 2015, we wish to inform you about the proposed acquisition, which was approved by the Board ....

SEC/SE/050/2026-27 Chennai, July 30, 2026 To To National Stock Exchange of India Limited BSE Limited Exchange Plaza, Bandra Kurla Complex, 25th Floor, P.J. Towers, Bandra(E), Dalal Street, Mumbai – 400051 Mumbai – 400 001 NSE Symbol - DATAPATTNS Company Code: 543428 Sub: Disclosure pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/ Madam, Pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you about the proposed acquisition, which was approved by the Board of Directors, subject to other statutory / regulatory approval required, if any, at its Meeting held today i.e. Thursday, July 30, 2026. Please find enclosed herewith the brief details as per SEBI Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026, as Annexure A to this letter. You are requested to take the above on record and oblige. Thanking You. For Data Patterns (India) Limited Prakash R Company Secretary and Compliance Officer Membership No.: F13620 Encl: As above Annexure A Disclosure of information pursuant to Regulation 30 of the Listing Regulations read with SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 Acquisition of the entire shareholding of ST Advanced Composites Pvt. Ltd S.No. Particulars Details 1. Name of the target entity, details in brief such ST Advanced Composites (STAC) Private Ltd. as size, turnover etc. The Authorized Share Capital of the Company is Rs. 50,00,000 divided into 5,00,000 Equity Shares of Rs. 10/‐each. The Turnover as per Provisional Financial Statement as on 31 March 2026 is Rs.416.85 lakhs. 2. Whether the acquisition would fall within No related party transaction(s) and whether the promoter / promoter group / group companies have any interest in the entity being acquired? If yes, nature of interest and details thereof and whether the same is done at “arm’s length” 3. Industry to which the entity being acquired ST Advanced Composites is a Chennai-based advanced belongs composite engineering company specializing in RF- transparent radomes, aerospace-grade structural components, and defence composite solutions. 4. Objects and impact of acquisition (including Upon completion of the said transaction, Data Patterns but not limited to, disclosure of reasons for (India) Limited shall hold 100% stake in ST Advanced acquisition of target entity, if its business is Composites Pvt Ltd. (STAC), and accordingly, STAC shall outside the main line of business of the listed become a wholly owned subsidiary of the Data Patterns entity) (India) Limited. The Objects and impact is as follows: Vertical Integration Data Patterns currently designs and manufactures radar electronics but procures radomes and composite structures externally. This results in margin leakage to third-party vendors, schedule dependency, and limited scope when bidding for integrated subsystem programmes. Acquiring STAC brings this capability in-house. S.No. Particulars Details Integrated Subsystem Capability DRDO, international radar OEMs, and missile programme customers increasingly require a single vendor for electronics plus RF structures. Post-acquisition, Data Patterns can offer this, expanding the addressable value per programme to an estimated 1.3– 2.0x. 5. Brief details of any governmental or Not Applicable regulatory approvals required for the acquisition 6. Indicative time period for completion of the 3 Months acquisition 7. Consideration - whether cash consideration Cash Consideration or share swap or any other form and details of the same; 8. Cost of acquisition and/or the price at which Rs.1.50 Cr. to the Promoters towards acquisition of Equity the shares are acquired; Shares. Rs.8.50 Cr. as a loan to the Target Company to enable it to settle its liabilities. 9. Percentage of shareholding / control 100 % acquired and / or number of shares acquired; 10. Brief background about the entity acquired in ST Advanced Composites is a Chennai-based advanced terms of products/line of business acquired, composite engineering company specialising in RF- date of incorporation, history of last 3 years transparent radomes, aerospace-grade structural turnover, country in which the acquired components, and defence composite solutions. End-to-end entity has presence and any other significant capabilities: design, tooling, fabrication, assembly, and information (in brief); testing. Core focus: aerospace, defence, UAVs, and RF structures. Last 3 years’ turnover: o FY 23-24: Rs. 157.66 Lakhs. (Audited) o FY 24-25: Rs. 442.19 Lakhs. (Audited) o FY 25-26: Rs.416.85 Lakhs. (Provisional)