13D Filing: Red Mountain Capital and Destination XL Group Inc. (DXLG)

SCHEDULE 13D/A

Item 6 of this Schedule 13D is hereby amended to include the following information:

RMCP LLC and DXLG entered into a letter agreement (the Letter Agreement) on April 4, 2018, pursuant to which, in accordance
with paragraph 5 of the Confidentiality and Standstill Agreement, DXLG authorized Red Mountain and its Affiliates (as defined in the Letter Agreement) to increase their aggregate Percentage Stock Ownership (as defined in the Letter Agreement)
interest in DXLG to up to 17.12% of the outstanding Common Stock. Red Mountain and its Affiliates are permitted to increase this 17.12% up to 20% but only to the extent that such increase is achieved through (a) compensation paid in Corporation
Securities (as defined in the Letter Agreement) to Mr. Mesdag pursuant to the DXLG non-employee director compensation plans or (b) a reduction in the number of issued and outstanding shares of common
stock of DXLG.

The foregoing description of the Letter Agreement is a summary only and is qualified in its entirety by reference to the
full text of the Letter Agreement, which is filed as Exhibit 3 to this Schedule 13D and is hereby incorporated herein by reference.