UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                     FORM 4

                  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

|_|  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)
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1.   Name and Address of Reporting Person*

   LeBuhn                           Robert
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   (Last)                           (First)             (Middle)

c/o Enzon, Inc., 685 Route 202/206
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                                    (Street)

Bridgewater                        New Jersey            08807
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   (City)                           (State)              (Zip)

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2.   Issuer Name and Ticker or Trading Symbol

     ENZON PHARMACEUTICALS, INC. (ENZN)
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3.   I.R.S. Identification Number of Reporting Person, if an entity (voluntary)


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4.   Statement for Month/Day/Year

     December 31, 2002
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5.   If Amendment, Date of Original (Month/Day/Year)


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6.   Relationship of Reporting Person(s) to Issuer
     (Check all applicable)

     |X|  Director                             |_|  10% Owner
     |_|  Officer (give title below)           |_|  Other (specify below)

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7.   Individual or Joint/Group Filing (Check Applicable line)

     |X|  Form Filed by One Reporting Person
     |_|  Form Filed by More than One Reporting Person
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           Table I -- Non-Derivative Securities Acquired, Disposed of,
                             or Beneficially Owned
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5. Amount of 6. 4. Securities Owner- Securities Acquired (A) or Beneficially ship 2A. 3. Disposed of (D) Owned Form: 7. 2. Deemed Transaction (Instr. 3, 4 and 5) Following Direct Nature of Trans- Execution Code ------------------------------- Reported (D) or Indirect 1. action Date, if (Instr. 8) (A) Transaction(s) Indirect Beneficial Title of Security Date any ------------ or (Instr. 3 & (I) Ownership (Instr. 3) (mm/dd/yy) (mm/dd/yy) Code V Amount (D) Price Instr.4) (Instr.4) (Instr.4) - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ ====================================================================================================================================
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). Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number FORM 4 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================
9. Number 10. of Owner- deriv- ship ative Form 2. Secur- of Conver- 5. 7. ities Deriv- 11. sion Number of Title and Amount Bene- ative Nature or Derivative 6. of Underlying 8. ficially Secur- of Exer- 3A. 4. Securities Date Securities Price Owned ity: In- cise Deemed Trans- Acquired (A) Exercisable and (Instr. 3 and 4) of Follow- Direct direct Price 3. Execut- action or Disposed Expiration Date ---------------- Deriv- ing (D) or Bene- 1. of Trans- ion Code of(D) (Month/Day/Year) Amount ative Reported In- ficial Title of Deriv- action Date if (Instr. (Instr. 3, ---------------- or Secur- Trans- direct Owner- Derivative ative Date any 8) 4 and 5) Date Expira- Number ity action(s) (I) ship Security Secur- (mm/dd/ (mm/dd/ ------ ------------ Exer- tion of (Instr. (Instr. (Instr. (Instr. (Instr. 3) ity yy) yy) Code V (A) (D) cisable Date Title Shares 5) 4) 4) 4) - ------------------------------------------------------------------------------------------------------------------------------------ Common Stock 1-for 12/31/02 A 240 See See Common 240 240 D Right(1) -1 Footnote Footnote Stock (1) (1) - ------------------------------------------------------------------------------------------------------------------------------------ Common Stock $16.86 1/02/03 A 5,000 1/1/04 1/1/13 Common 5,000 5,000 D (right to Stock buy)(2) - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ ====================================================================================================================================
Explanation of Responses: 1. Securities granted by Enzon Pharmaceuticals, Inc. pursuant to Enzon's 2001 Incentive Stock Plan as compensation for service as an Independent Director during the quarter ended December 31, 2002 and qualified under Rule 16b-3(d). The value of the compensation was $4,000. In the spring of 2003, each Common Stock right will be exchanged for one share of Common Stock; provided, however, Mr. LeBuhn will be entitled to elect to receive cash for up to 50% of these rights, with the price per right being $16.72, the fair market value of Enzon's common stock on December 31, 2002. 2. Annual option granted to the Independent Directors of Enzon pursuant to Enzon's 2001 Incentive Stock Plan and qualified under Rule 16b-3(d). /s/ Kenneth J. Zuerblis 1/03/03 - --------------------------------------------- ----------------------- **Signature of Reporting Person Date Attorney-in-fact ** 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.