NEW YORK, April 2, 2014 /PRNewswire/ -- S&P SmallCap 600 constituent PacWest Bancorp (NASD: PACW) will replace ManTech International Corp. (NASD: MANT) in the S&P MidCap 400, and ManTech International will replace PacWest Bancorp in the S&P SmallCap 600 after the close of trading on Monday, April 7. PacWest is acquiring CapitalSource Inc. (NYSE: CSE) in a deal expected to be completed on that date, pending final conditions. PacWest will have a post-merger market capitalization that is more representative of the mid-cap market space. ManTech International's current market capitalization is more representative of the small-cap market space.

PacWest Bancorp provides commercial banking products and services. Headquartered in Los Angeles, CA, the company will be added to the S&P MidCap 400 GICS (Global Industry Classification Standard) Regional Banks Sub-Industry index.

ManTech International provides technologies and solutions for mission-critical national security programs. Headquartered in Fairfax, VA, the company will be added to the S&P SmallCap 600 GICS IT Consulting & Other Services Sub-Industry index.

Following is a summary of the changes:



                                   S&P MIDCAP 400 INDEX - April 7, 2014
                                   ------------------------------------

                    COMPANY                    GICS ECONOMIC SECTOR           GICS SUB-INDUSTRY
                    -------                    --------------------           -----------------

      ADDED     PacWest Bancorp                     Financials                 Regional Banking
      -----     ---------------                     ----------                 ----------------

     DELETED ManTech International            Information Technology    IT Consulting & Other Services
     ------- ---------------------            ----------------------    ------------------------------




                                   S&P SMALLCAP 600 INDEX - April 7, 2014
                                   --------------------------------------

                    COMPANY                     GICS ECONOMIC SECTOR            GICS SUB-INDUSTRY
                    -------                     --------------------            -----------------

      ADDED  ManTech International             Information Technology     IT Consulting & Other Services
      -----  ---------------------             ----------------------     ------------------------------

     DELETED    PacWest Bancorp                      Financials                  Regional Banking
     -------    ---------------                      ----------                  ----------------

Additions to and deletions from S&P Dow Jones Indices do not in any way reflect an opinion on the investment merits of the companies involved.

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