EXHIBIT 99.(a)(1)(B)
Dear Option Holder:
We are offering to amend the terms of all outstanding stock options currently outstanding under the
Gladstone Commercial Corporation 2003 Equity Incentive Plan, as amended. The details of the offer
are set forth in the attached documents, which include, among other things, the Offer to Amend
Options. Please review the enclosed carefully. For additional information or assistance, you should
contact Paula Novara at Gladstone Management Corporation via e-mail at
paula.novara@gladstonemanagement.com or by telephone at (703) 287-5885.
To make your election to accept or reject this offer, you must make your election and sign and
deliver the Election Form to Paula Novara at Gladstone Management such that it is received on or
before the Expiration Date. The Election Form may be sent via mail, courier, e-mail, facsimile or
personal delivery. Paula Novara is located at our McLean Office; her e-mail address is
paula.novara@gladstonemanagement.com, and her fax number is (703) 287-5801. Election Forms must be
physically received by Paula Novara before 5:00 p.m., Eastern Time, on August 31, 2006 (or a later
expiration date if we extend the offer). If you deliver your Election Form by e-mail or facsimile,
you must deliver the original Election Form to Paula Novara by no later than September 15, 2006.
David Gladstone