 
    Beginning on April 10, 2025, the following responses to questions related to Pfizer Inc.'s 2025 Annual   Meeting of Shareholders may be posted to Pfizer Inc.'s corporate social media accounts.    For questions on why receiving advertisement:  You may be interested to learn more about Pfizer and its Annual Meeting of Shareholders,  which will be held virtually on April 24, 2025. Click here to learn more: 2025 Annual Meeting  Website    For all other questions around process, including instructions for voting:  Visit Pfizer’s Annual Meeting of Shareholders site to learn more about the Annual Meeting,  including information, instructions and deadlines for voting, available here: 2025 Annual  Meeting Website      # # #