FOR IMMEDIATE RELEASE


         UNITED FINANCIAL BANCORP, INC. ANNOUNCES COMPLETION OF SECOND-
                          STEP CONVERSION AND OFFERING

     West Springfield, MA, December 3, 2007: United Financial Bancorp, Inc. (the
"Company"),  the new Maryland  holding company for United Bank and the successor
company for United Financial Bancorp, Inc., a Federal corporation (NASDAQ Global
Select: UBNK)("United Financial-Federal"), announced the completion today of its
offering  in  connection  with the  conversion  of United  Bank from the  mutual
holding company form of organization to the stock form of organization.

     As a result of the conversion and offering,  the Company became the holding
company  for  United  Bank,  and  United  Mutual  Holding   Company  and  United
Financial-Federal ceased to exist.

     The Company also announced its final offering  results.  Orders for a total
of 6,467,038 shares at a purchase price of $10.00 per share were accepted in the
syndicated  offering,  a slight  increase from the  previously  announced  share
amount.   The  Company  also  accepted  orders  for  3,097,532   shares  in  the
subscription  offering and the  community  offering  portion of its  second-step
conversion,  including  753,834  shares  to be  issued  to  the  employee  stock
ownership  plan.  As a  result,  a total of  9,564,570  shares  were sold in the
subscription  offering,  community offering and syndicated offering combined,  a
slight increase from the previously announced share amount.

     As a result of the conversion and stock offering,  each public  stockholder
of United  Financial-Federal will receive 1.04079 shares of the Company's common
stock in  exchange  for each of his or her  shares of  United  Financial-Federal
common stock, a slight increase from the previously announced exchange ratio.

     Keefe, Bruyette & Woods, Inc. acted as lead manager for the offering.  Luse
Gorman Pomerenk & Schick served as legal counsel to the Company in the offering.

     The shares of common  stock sold in the offering and issued in the exchange
are expected to commence trading on December 4, 2007 on the NASDAQ Global Select
market.  The shares  will trade under the symbol  "UBNKD"  for the first  twenty
trading days after the closing, after which the symbol will revert to "UBNK."

     United  Financial  Bancorp,  Inc. is the holding company for United Bank, a
federally   chartered   savings   bank   headquartered   in  West   Springfield,
Massachusetts that had $1.0 billion in assets at September 30, 2007. United Bank
was originally founded in 1882, as a  Massachusetts-chartered  cooperative bank.
In July 2005, United Financial Bancorp,  Inc. completed its initial public stock
offering.  Investors may obtain  additional  information  about United Financial
Bancorp,  Inc.  on the  Internet  at  www.bankatunited.com,  under the  Investor
Relations section.

     This press  release  contains  certain  forward-looking  statements.  These
forward-looking  statements are made in good faith pursuant to the "safe harbor"
provisions of the Private  Securities  Litigation  Reform Act of 1995. The words
"may,"  "could,"  "should,"  "would,"   "believe,"   "anticipate,"   "estimate,"
"expect,"  "intend,"  "plan" and similar  expressions  are  intended to identify
forward-looking  statements.  These forward-looking statements may be subject to
significant  known  and  unknown  risks,   uncertainties,   and  other  factors,
including,  but not  limited to,  those  matters  referred  to in the  preceding
sentence.



     Although we believe that the expectations reflected in such forward-looking
statements are reasonable, actual results may differ materially from the results
discussed in these  forward-looking  statements.  You are cautioned not to place
undue reliance on these forward-looking  statements,  which speak only as of the
date  hereof.  United  Financial  Bancorp,  Inc.  undertakes  no  obligation  to
republish revised forward-looking  statements to reflect events or circumstances
after the date hereof or to reflect the occurrence of unanticipated events.

     The shares of common  stock are not savings  accounts or savings  deposits,
may lose value and are not insured by the Federal Deposit Insurance  Corporation
or any other government agency.


CONTACT: Richard B. Collins, President and Chief Executive Officer
TELEPHONE: (413) 787-1700