X0306 4 2015-02-18 0 0001254595 FIRST POTOMAC REALTY TRUST FPO 0001265613 DONATELLI DOUGLAS J C/O FIRST POTOMAC REALTY TRUST 7600 WISCONSIN AVENUE, 11TH FLOOR BETHESDA MD 20814 1 1 0 0 Chairman and CEO Common Shares 2015-02-18 4 F 0 3695 12.19 D 392663 D Common Shares 2015-02-19 4 F 0 3773 11.87 D 388890 D Common Shares 544 I Held by custodian for children Reflects common shares surrendered to the Issuer to satisfy tax withholding obligations in connection with the vesting of restricted common shares. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. Samantha Sacks Gallagher, EVP and General Counsel, Attorney in fact for Douglas Donatelli 2015-02-20