Keystone Property Trust to be Acquired By ProLogis and Eaton Vance Affiliates in $1.5 Billion Transaction

Keystone Property Trust to be Acquired By ProLogis and Eaton
Vance Affiliates in $1.5 Billion Transaction 


WEST CONSHOHOCKEN, Pa., May 3  /PRNewswire-FirstCall/ -- Keystone Property
Trust  today announced that it has entered into a definitive merger agreement
pursuant to which a partnership among ProLogis and affiliates of investment
companies managed by Eaton Vance Management will acquire Keystone and its
subsidiaries.

Under the terms of the merger agreement, which was unanimously approved by the
Boards of Trustees of Keystone Property Trust and ProLogis and by Eaton Vance,
the partnership will acquire all of the outstanding common shares and common
units of Keystone for $23.80 per share in cash. The transaction represents a
premium of approximately 17% over the closing price on Friday, April 30, 2004.

The transaction has a total equity value of $850 million based upon Keystone's
approximately 35.7 million common shares outstanding on a fully diluted and
fully converted basis.  The total transaction value is approximately $1.5
billion including debt and preferred shares.  The transaction also offers
certain holders of common units the option (in lieu of cash) to elect to
receive limited partnership interests in a subsidiary of ProLogis.

Jeffrey E. Kelter, President and CEO of Keystone Property Trust, stated, "Since
our formation in December of 1997, we have built a tremendous company. Having
increased the company's asset base sixfold and delivered a compound annual
shareholder return of 16.5% since that time, we have delivered outstanding
results for our shareholders.  I am also pleased that upon completion of the
transaction, the portfolio we worked so hard to build will be in the hands of
the recognized leader in our industry."

The merger is subject to approval of a majority of Keystone Property Trust's
outstanding common shares and a majority of Keystone Operating Partnership's
partner units.  ProLogis and the Eaton Vance affiliates have committed
financing for the transaction.  The companies anticipate that the transaction
can be completed during the third quarter of 2004.

Merrill Lynch & Co. and Deutsche Bank Securities Inc. acted as financial
advisors to Keystone Property Trust.  Clifford Chance US LLP acted as legal
counsel to Keystone Property Trust.

Proxies may be solicited on behalf of Keystone Property Trust, by members of
its board of trustees and executive officers.  Information about such persons
can be found in Keystone Property Trust's definitive proxy statement relating
to its 2004 Annual Meeting of Shareholders, which is available without charge
at the U.S. Securities and Exchange Commission's ("SEC") internet website at
http://www.sec.gov/.

In connection with the proposed transaction, Keystone Property Trust will file
a proxy statement with the SEC.  Keystone Property Trust stockholders should
read the proxy statement when it is available because it will contain important
information.  Investors can obtain the proxy statement and other relevant
documents, including the merger agreement relating to the proposed transaction,
without charge at the SEC's Internet website at http://www.sec.gov/.

Keystone Property Trust, with headquarters in West Conshohocken, Pennsylvania,
is a fully integrated real estate investment trust with a current portfolio of
143 properties, including properties under development, aggregating over 34
million square feet in the Eastern United States.  For more information,
contact Aleathia M. Hoster at [phone], send email to  or visit the
Company website at http://www.keystoneproperty.com/.

This press release may contain statements which constitute forward-looking
statements within the meaning of the Private Securities Litigation Reform Act
of 1995, including statements regarding the intent, belief or current
expectations of the Company, its trustees, or its officers with respect to the
future operating performance of the Company and the result and the effect of
legal proceedings.  Investors are cautioned that any such forward-looking
statements are not guarantees of future performance and involve risks and
uncertainties, and that actual results may differ materially from those in the
forward-looking statements as a result of various factors. Important factors
that could cause such differences are described in the Company's periodic
filings with the Securities and Exchange Commission, including the Company's
Form 10-K and quarterly reports on Form 10-Q. 

DATASOURCE: Keystone Property Trust



CONTACT:  Aleathia M. Hoster of Keystone Property Trust, [phone],

or Michael Beckerman, [phone], , for Keystone

Property Trust



Web site:  http://www.keystoneproperty.com/ 

Copyright