UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                   ___________

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(D) OF THE

                         SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported)       May 17, 2006
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                           ENZON PHARMACEUTICALS, INC.

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             (Exact name of registrant as specified in its charter)



  Delaware                    0-12957                           22-2372868

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(State or other           (Commission File No.)     (IRS Identification No.)
jurisdiction of
incorporation)

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                685 Route 202/206, Bridgewater, New Jersey 08807

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               (Address of principal executive offices) (Zip Code)



       Registrant's telephone number, including area code (908) 541-8600
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(Former name or former address, if changed since last report)
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Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

     [    ] Written communication  pursuant to Rule 425 under the Securities Act
          (17 CFR 230.425)

     [    ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act
          (17 CFR 240.14a-12)

     [    ] Pre-commencement  communication  pursuant to Rule 14d-2(b) under the
          Exchange Act (17 CFR 240.14d-2(b)

     [    ] Pre-commencement  communication  pursuant to Rule 13e-4(c) under the
          Exchange Act (17 CFR 240.13e-4(c))







ITEM 1.01 ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT.

AMENDMENT OF 2001 STOCK INCENTIVE PLAN

     On May 18,  2006,  at Enzon's  2006  Annual  Meeting of  Stockholders  (the
"Annual Meeting"),  Enzon's stockholders  approved the amendment of Enzon's 2001
Incentive  Stock  Plan (the  "Plan")  increasing  the number of shares of common
stock  issuable  thereunder  by an  additional  4,000,000  shares to  10,000,000
shares. The foregoing  description of the amendment is qualified in its entirety
by  reference to the full text of the Plan that is filed as Exhibit 10.1 to this
Form 8-K and incorporated herein by reference.

ITEM 3.02. UNREGISTERED SALES OF EQUITY SECURITIES.

     On May 17, 2006, the Company entered into an agreement to sell $225 million
aggregate  principal  amount  of its 4%  senior  convertible  notes  due 2013 in
connection with a private placement of the notes. Pursuant to the agreement, the
Company  has  granted  the  initial  purchasers  the right to  purchase up to an
additional  $50  million  aggregate  principal  amount of the notes for the sole
purpose of covering  over  allotments.  The net  proceeds  after  deducting  the
initial  purchasers'  discount of approximately $5.9 million (or $7.2 million if
the over  allotment  option is  exercised  in full) and  offering  expenses  are
expected to be $218.8 million (or $267.5 million if the over allotment option is
exercised in full).  The notes are  convertible at the option of the holder into
the Company's  common stock at a conversion  price of $9.55 per share,  which is
subject to  anti-dilution  adjustments.  The  private  placement  is exempt from
registration  under the Securities Act of 1933, as amended,  pursuant to Section
4(2) thereof and Rule 144A promulgated thereunder. The completion of the private
placement is subject to customary closing conditions.

ITEM 5.03 AMENDMENTS TO ARTICLES OF  INCORPORATION  OR BYLAWS;  CHANGE IN FISCAL
YEAR.

     At the Annual Meeting, Enzon's stockholders, upon the recommendation of the
Company's Board of Directors,  approved the amendment and restatement of Enzon's
Restated  Certificate of Incorporation to increase the authorized  shares of the
Company's  common stock from  90,000,000 to 170,000,000  shares.  As a result of
this stockholder  approval,  Enzon filed an Amended and Restated  Certificate of
Incorporation  with the  Secretary  of State of the State of Delaware on May 18,
2006. A copy of the Amended and Restated  Certificate of  Incorporation is filed
as Exhibit 3.1 to this Form 8-K and is incorporated herein by reference.

ITEM 8.01 OTHER EVENTS.

     On May 18, 2006,  Enzon issued a press release  announcing  the approval by
its  stockholders of the Company's  proposals at the Annual  Meeting.  A copy of
Enzon's  press  release  dated May 18, 2005 is attached as Exhibit  99.1 to this
Form 8-K and is incorporated herein by reference.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.

(c) Exhibits.

EXHIBIT NO.       DESCRIPTION

3.1  Amended and Restated Certificate of Incorporation of Enzon Pharmaceuticals,
     Inc.

10.1 2001   Incentive   Stock   Plan,   as  amended  and   restated,   of  Enzon
     Pharmaceuticals, Inc.

99.1 Press Release of Enzon Pharmaceuticals, Inc. dated May 18, 2006









                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Dated:  May 19, 2006

                                   By:/s/ CRAIG A. TOOMAN

                                   Craig A. Tooman
                                   Executive Vice President, Finance and Chief
                                   Financial Officer