Trading Window

Pfizer Limited The Capital, 1802/1901, Plot No. C - 70, G Block, Bandra Kurla Complex, Bandra (East), Mumbai 400 051. Tel : +91 22 6693 2000 Fax : +91 22 2654 0274 September 29, 2026 The Corporate Relationship Dept. The Manager, Listing Dept. BSE Limited The National Stock Exchange of India Ltd. 1st Floor, P.J.Towers Exchange Plaza, 5th Floor, Plot No. C/1, Dalal Street, Fort G Block Bandra-Kurla Complex, Bandra (E) Mumbai – 400 001 Mumbai – 400 051 Scrip Code: 500680 Scrip Symbol: PFIZER Dear Sirs / Madam, Sub: Closure of Trading Window. This is to inform you that, for the purpose of declaration of unaudited Financial Results of the Company, for the half year ending September 30, 2026, the trading window for dealing in shares of the Company shall remain closed from Wednesday, September 30, 2026 (close of business) till 48 hours after financial results are made public. Request you to please take the above on record. Thanking you, Yours truly, For Pfizer Limited Prajeet Nair Director – Corporate Services & Company Secretary Cc: National Securities Depository Limited (NSDL) Central Depository Services (India) Limited (CDSL) KFin Technologies Limited CIN: L24231MH1950PLC008311 Email ID: contactus.india@pfizer.com Website: www.pfizerltd.co.in