Ordinary Shares, nominal value GBP0.01 per share

Haleon plc

Building 5, First Floor, The Heights, Weybridge, Surrey, X0, KT13 0NY

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The first and second paragraphs of Item 5 of the Schedule 13D are hereby superseded by the following paragraphs: On February 25, 2025, Pfizer withdrew the Ordinary Shares underlying the restricted American Depositary Shares that it previously held under a restricted American Depositary Receipts facility with JPMorgan Chase Bank, N.A., as depositary. The number of Ordinary Shares beneficially owned by Pfizer remains unchanged as a result of such withdrawal. As of the date of this Schedule 13D, Pfizer is the beneficial owner of 661,709,764 Ordinary Shares, which represents approximately 7.3% of the Issuer's outstanding Ordinary Shares. Pfizer's beneficial ownership is composed of (1) 661,709,764 Ordinary Shares held on behalf of Pfizer by Pfizer's nominee and (2) zero American Depositary Shares. The beneficial ownership percentage reported herein was calculated based on 9,054,145,714 Ordinary Shares outstanding as of January 31, 2025, as reported by the Issuer on its Form 6-K filed with the SEC on February 3, 2025. The number of Ordinary Shares as to which the Reporting Person has the sole power to vote or direct the vote is 661,709,764. The number of Ordinary Shares as to which the Reporting Person shares the power to vote or direct the vote is zero. The number of Ordinary Shares as to which the Reporting Person has the sole power to dispose or direct the disposition is 661,709,764. The number of Ordinary Shares as to which the Reporting Person shares the power to dispose or direct the disposition is zero.

See (a).

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No amendment to this Item is being made.

No amendment to this Item is being made.