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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934
(Amendment No.  )
Filed by the Registrant x 
Filed by a Party Other Than the Registrant ¨
Check the Appropriate Box:
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| ¨ | Preliminary Proxy Statement | 
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| ¨ | Confidential, for Use of the Commission Only (as Permitted by Rule 14a-6(e)(2)) | 
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| ¨ | Definitive Proxy Statement | 
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| x | Definitive Additional Materials | 
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| ¨ | Soliciting Material Pursuant to §240.14a-12 | 
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| Pfizer Inc. | 
| (Name of Registrant as Specified In Its Charter) | 
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| (Name of Person(s) Filing Proxy Statement, if other than the Registrant) | 
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| Payment of filing fee (Check all boxes that apply): | 
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| x | No fee required | 
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| ¨ | Fee paid previously with preliminary materials | 
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| ¨ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 | 
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