DEFA14A

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as
permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☑ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934

Filed by the Registrant ☑

Filed by a Party other than the Registrant ☐

Check the appropriate box:

Gladstone Commercial Corporation

(Name of Registrant as Specified in its Charter)

Not Applicable

(Name of Person(s) Filing Proxy Statement if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☑ No fee required.

☐ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.


		(1) Title of each class of securities to which transaction applies:

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		(3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

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		(5) Total fee paid:

☐		Fee paid previously with preliminary materials.

☐		Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

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				Meeting Information
GLADSTONE COMMERCIAL CORPORATION				Meeting Type: Annual Meeting For holders as of: March 5, 2018 Date: May 3, 2018 Time: 11:00 AM EDT Location: Meeting live via the Internet-please visit www.virtualshareholdermeeting.com/GOOD2018 The company will be hosting the meeting live via the Internet this year. To attend the meeting via the Internet please visit www.virtualshareholdermeeting.com/GOOD2018 and be sure to have the information that is printed in the box marked by the arrow (located on the following page).
GLADSTONE COMMERCIAL CORPORATION 1521 WESTBRANCH DRIVE, SUITE 100 MCLEAN, VA 22102				You are receiving this communication because you hold shares in the company named above.
				This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting.
				See the reverse side of this notice to obtain proxy materials and voting instructions.


— Before You Vote — How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE: NOTICE AND PROXY STATEMENT ANNUAL REPORT How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:
1) BY INTERNET:		www.proxyvote.com
2) BY TELEPHONE:		1-800-579-1639
3) BY E-MAIL*:		sendmaterial@proxyvote.com
* If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line.
Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before April 19, 2018 to facilitate timely delivery.


— How To Vote — Please Choose One of the Following Voting Methods

Vote By Internet: Before The Meeting: Go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions. During The Meeting: Go to www.virtualshareholdermeeting.com/GOOD2018. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.
Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.


The Board of Directors recommends you vote FOR the following:

1. Election of Directors

Nominees:

01) Terry L. Brubaker
02) Caren D. Merrick
03) Walter H. Wilkinson, Jr.

The Board of Directors recommends you vote FOR the following proposal:

2. To ratify our Audit Committee’s selection of PricewaterhouseCoopers LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2018.

NOTE: To transact such other business as may properly come before the meeting or any adjournment or postponement thereof.


Voting Items