4 1 a34586.txt PHILIP LEDER Form 4 Page 1 of 2 ---------------------------- --------------- OMB APPROVAL FORM 4 ---------------------------- --------------- OMB Number: 3235-0287 ---------------------------- Expires: January 31, 2005 ---------------------------- Estimated average burden hours per response... 0.5 ---------------------------- [X] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). (Print or Type Responses)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

------------------------------------------------------------------------------------------------------------------------ 1. Name and Address of Reporting Person* 2. Issuer Name and Ticker or Trading Symbol Leder, Philip Pharmacia Corporation PHA ------------------------------------------------------------------------------------------------------------------------ (Last) (First) (Middle) 3. I.R.S. Identification 4. Statement for Number of Reporting Month/Day/Year Person, if an entity (voluntary) 100 Route 206 North April 16, 2003 ------------------------------------------------------------------------------------------------------------------------ (Street) 5. If Amendment, Date of Original (Month/Day/Year) Peapack, NJ 07977 ------------------------------------------------------------------------------------------------------------------------ (City) (State) (Zip)

Form 4 Page 2 of 2 Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) -------------------------------------------------------------------------------------------------------------------- 1. Title of Derivative 2. Conver- 3. Trans- 3A. Deemed Execution 4. Transac- 5. Number of Security (Instr. 3) sion or action Date, if any tion Code Derivative Exercise Date (Month/Day/Year) (Instr. 8) Securities Price of (Month/ Acquired (A) Derivative Day/ or Disposed of Security Year) (D) (Instr. 3, 4 and 5) ----------------------------------- Code V (A) (D) -------------------------------------------------------------------------------------------------------------------- Option (right to buy) $41.92 04/16/2003 J(1) 13,636 -------------------------------------------------------------------------------------------------------------------- Option (right to buy) $52.11 04/16/2003 J(1) 12,690 -------------------------------------------------------------------------------------------------------------------- Stock Equivalent Units 1-for-1 04/16/2003 J(1) 195 -------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------------------

Explanation of Responses: (1) Each share of Pharmacia Common Stock (PHA) held by the reporting person was exchanged for 1.4 shares of Pfizer Common Stock (PFE), pursuant to the Pfizer/Pharmacia merger agreement adopted by the Pfizer and Pharmacia shareholders on December 6 & 9, 2002, respectively. (2) Includes 2,200 deferred shares. (3) Option is currently exercisable. /s/ Don W. Schmitz April 16, 2003 -------------------------------- ----------------- **Signature of Reporting Person Date Don W. Schmitz, attorney-in-fact for Philip Leder Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. *If the form is filed by more than one reporting person, see Instruction 4(b)(v). **Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

PHARMACIA CORP /DE/ 4