Important Notice Concerning Limitations on
                   Trading in Provident New York Bancorp Stock
                   -------------------------------------------

To:      Executive Officers and Directors of Provident New York Bancorp

From:    Provident New York Bancorp

Date:    July 27, 2007


     1.   As you may know, a "blackout  period" will be imposed on  transactions
          involving the Provident New York Bancorp  ("Company")  Stock Fund (the
          "Company  Stock  Fund")  under the  Provident  Bank  401(k)  Plan (the
          "401(k) Plan"). This blackout period,  described in more detail below,
          is necessary in order for participants' accounts in the 401(k) Plan to
          be  transferred  to  Principal   Financial  Group   ("Principal")   in
          connection  with the  change in  retirement  plan  vendors.  Under the
          Sarbanes-Oxley  Act of 2002,  the executive  officers and directors of
          the Company will generally be prohibited from engaging in transactions
          involving the Company's equity securities (including options and other
          derivatives based on Company stock) during this blackout period.

     2.   As a result of the  transfer of plan assets to  Principal,  during the
          blackout  period  participants  in the 401(k) Plan will be temporarily
          unable to (1) make  exchanges  into or out of the  Company  Stock Fund
          under the 401(k) Plan, (2) take distributions of money invested in the
          Company  Stock  Fund,  and (3) take  loans of  money  invested  in the
          Company Stock Fund.

     3.   The blackout  period is expected to begin at 4:00 pm, Eastern time, on
          Tuesday,  August  27,  2007,  and end the week of  September  9, 2007,
          provided,  however,  that the  blackout  period may be extended due to
          events that are beyond the  control of Company.  We will notify you of
          any changes that affect the dates of the blackout period. In addition,
          you can confirm the status of the blackout  period by  contacting  Dan
          Rothstein at (845) 369-8253.

     4.   Generally,  during  the  blackout  period,  you  are  prohibited  from
          directly or indirectly,  purchasing, selling or otherwise transferring
          any equity  security of Company that you acquired in  connection  with
          your service as an executive officer or director.  "Equity securities"
          are defined broadly to include options and other derivatives.  Covered
          transactions are not limited to those involving your direct ownership,
          but include any transaction in which you have a pecuniary interest.

     5.   The prohibition covers securities acquired "in connection with service
          as a director  or  executive  officer."  This  includes,  among  other
          things,  securities  acquired  under a  compensatory  plan or contract
          (such as under a stock  option,  or a restricted  stock  grant),  as a
          direct or indirect  inducement  to  employment or joining the Board of
          Directors, in transactions between the individual and the company, and
          as  director  qualifying  shares.  Securities  acquired  outside of an
          individual's  service  as a director  or  executive  officer  (such as
          shares  acquired  when  the  person  was an  employee  but  not yet an
          executive officer) are not covered.  However, if you hold both covered
          shares  and  non-covered  shares,  any  shares  that you sell  will be
          presumed to come first from the covered shares unless you can identify
          the  source  of the  sold  shares  and  show  that  you use  the  same
          identification  for all related  purposes  (such as tax  reporting and
          disclosure requirements).

     6.   The following are examples of transactions  that you may not engage in
          during the blackout period:

     o    Exercising  stock  options  granted  to you in  connection  with  your
          service as a director or executive officer.

     o    Selling Company stock that you acquired by exercising options.

     o    Selling  Company  stock that you  originally  received as a restricted
          stock grant.

     7.   There are certain exemptions, including:

     o    Purchases or sales under  10b5-1(c)  trading  plans (so long as you do
          not make or modify your  election  during the blackout  period or at a
          time when you are  aware of the  actual  or  approximate  dates of the
          blackout)

     o    Bona fide gifts, bequests and transfers pursuant to domestic relations
          orders

     8.   If you engage in a transaction  that violates these rules,  you can be
          required to disgorge  your profits from the  transaction,  and you are
          subject to civil and criminal penalties.

     The  rules  summarized  above  are  complex,  and the  criminal  and  civil
     penalties that could be imposed upon  executive  officers and directors who
     violate them could be severe.

     We  therefore  request  that you contact Dan  Rothstein  at (845)  369-8253
     before engaging in any transaction  involving  Company stock or derivatives
     based on Company stock during the blackout  period,  or if you believe that
     any such  transaction  in which  you have a  pecuniary  interest  may occur
     during the blackout period.