Filed Pursuant to Rule 424b(3)
Registration No. 333-77627
SUPPLEMENT TO PROSPECTUS
DATED NOVEMBER 12, 1999
33,598 SHARES OF KEYSTONE PROPERTY TRUST
COMMON STOCK $0.001 PAR VALUE
REGISTRATION NO. 333-77627
On May 28, 2003, an aggregate of 33,598 OP Units were transferred by means of gift from the Michael J. Falcone Family Trust No. 2, as to 16,799 OP Units, and from Mark G. Falcone, as to the remaining 16,799 OP Units, to The Nature Conservancy (the "Donee"). Subsequently, all of the OP Units were converted by the Donee into Common Shares on a 1:1 basis.
The above-referenced Prospectus is hereby supplemented to update the table of selling security holders as follows:
| |
Shares Owned Before Offering |
|
Shares Owned After Offering |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Name |
Number |
Percentage |
Registered Shares |
Number |
Percentage |
||||||
| Michael J. Falcone Family Trust No. 2 |
38,968 | 0.25 | % | 38,968 | 0 | 0 | % | ||||
| Mark G. Falcone | 30,988 | 0.20 | % | 30,988 | 0 | 0 | % | ||||
| The Nature Conservancy |
56,675 | 0.37 | % | 56,675 | 0 | 0 | % | ||||
The date of this Prospectus Supplement is June 12, 2003