Schedule 13d/a - United States Securities And Exchange Commission (Page 4 of 4) in pdf

Schedule 13d/a - United States Securities And Exchange Commission Page 4

Perkins Capital Management, Inc. transactions are for client accounts and

in the normal course of business.

Item 5.

Interest in Securities of the Issuer

Perkins Capital Management, Inc. holds 6,003,550 shares for clients

and has sole voting power over 5,100,250 of these shares and sole

dispositive power over 6,003,550.

Perkins Capital Management, Inc.

disclaims beneficial interest in all shares held in client accounts.

Item 6.

Contracts, Arrangements, Understandings or Relationships with

Respect to Securities of the Issuer

Perkins Capital Managment, Inc. is a federally registered investment

adviser and has no contracts, arragements, understandings or other

relationship with respect to the securities of the issuer.

Item 7.

Material to Be Filed as Exhibits:

None

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify

that the information set forth in this statement is true, complete and correct.

Date:

April 9, 2014

/s/Richard C. Perkins

Signature

Richard C. Perkins/Executive Vice President

Name/Title

Schedule 13d/a - United States Securities And Exchange Commission Page 4