We hereby inform that the trading window shall remain closed with effect from 1st October, 2026 for all designated persons and their immediate relatives pursuant to SEBI (PIT) (Amendment) Regulations, 2018.

Date: 28-09-2026 The Corporate Relationship Department, The BSE Limited, 25th Floor, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai - 400 001 Sir, Scrip Code: 544440 Subject: Intimation of closure of Trading Window Sir / Madam, We are to inform that the trading window shall remain closed with effect from 1st October, 2026 for all designated persons and their immediate relatives pursuant to SEBI (Prohibition of Insider Trading) (Amendment) Regulations, 2018 read with SEBI Circular No. SEBI/HO/ISD/ISD-PoD- 2/P/CIR/2025/55 dated April 21, 2025. The trading window shall open after the closure of 48 hours of announcement of the Un-audited Financial Results for the half-year ending on 30th September, 2026 to the Stock Exchange after its approval by the Board of Directors in the Board Meeting. Kindly take the same on your records. Thanking you, Yours faithfully, For CRYOGENIC OGS LIMITED RASHMI KAMLESH OTAVANI Company Secretary & Compliance Of(cid:976)icer