Pfizer Ltd. — Regulatory Filings 2026

Mar 28, 2026

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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

March 28, 2026

The Corporate Relationship Dept. The Manager, Listing Dept. BSE Limited The National Stock Exchange of India Ltd. 1[st] Floor, P.J.Towers Exchange Plaza, 5[th] 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 Financial Results of the Company for the quarter and financial year ending March 31, 2026, the trading window for trading in shares of the Company shall remain closed from Tuesday, March 31, 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 Digitally signed by Prajeet Nair Prajeet Nair Date: 2026.03.28 14:16:26 +05'30'

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