PNC Financial Services (PNC)

Summary

Creating powerhouse banking franchise in one
of the nation’s most attractive regions

Meets PNC’s acquisition objectives

Meaningful opportunities for value creation by
leveraging PNC and Mercantile’s strengths

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The PNC Financial Services Group, Inc. and Mercantile Bankshares Corporation will be filing
a proxy statement/prospectus and other relevant documents concerning the merger with the
United States Securities and Exchange Commission (the “SEC”).  WE URGE INVESTORS
TO READ THE PROXY STATEMENT/PROSPECTUS AND ANY OTHER DOCUMENTS TO
BE FILED WITH THE SEC IN CONNECTION WITH THE MERGER OR INCORPORATED BY
REFERENCE IN THE PROXY STATEMENT/PROSPECTUS, BECAUSE THEY WILL
CONTAIN IMPORTANT INFORMATION.  Investors will be able to obtain these documents
free of charge at the SEC’s web site (www.sec.gov).  In addition, documents filed with the
SEC by The PNC Financial Services Group, Inc. will be available free of charge from
Shareholder Relations at (800) 843-2206.  Documents filed with the SEC by Mercantile
Bankshares will be available free of charge from Mercantile Bankshares Corporation,            
2 Hopkins Plaza, P.O. Box 1477, Baltimore, MD 21203, Attention: Investor Relations.

The directors, executive officers, and certain other members of management and employees
of Mercantile Bankshares are participants in the solicitation of proxies in favor of the merger
from the shareholders of Mercantile Bankshares.  Information about the directors, and
executive officers of Mercantile Bankshares is set forth in the proxy statement for its 2006
annual meeting of stockholders, which was filed with the SEC on March 29, 2006.  Additional
information regarding the interests of such participants will be included in the proxy
statement/prospectus and the other relevant documents filed with the SEC when they become
available.

Additional Information About This
Transaction

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Appendix

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Combined Balance Sheet

Loans                                                                                             $49.9          $11.9           $61.8

Securities                                                                                      21.7              3.1             24.8

Total assets                                                                              94.9            17.0           111.9

Noninterest bearing deposits      14.4              3.4             17.8

Total deposits                                                                       63.5            12.4             75.9

Loans to deposits                                                          80%            98%             82%