Schedule 13d/a - United States Securities And Exchange Commission Page 2
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4CUSIP No. 917273104
1.Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
Perkins Capital Management, Inc.
41-1501962
2.Check the Appropriate Box if a Member of a Group (See Instructions)
(a) /
/
(b) /
/
3.SEC Use Only
4.Source of Funds (See Instructions)
OO
6.Citizenship or Place of Organization
730 East Lake Street, Wayzata, Minnesota
55391
Number of 7.Sole Voting Power
5,100,250
Shares
Beneficially 8.Shared Voting Power
owned
0
by Each
9.Sole Dispositive Power
6,003,550
Reporting
Person
10.Shared Dispositive Power With
0
11. Aggregate Amount Beneficially Owned by Each Reporting Person
6,003,550
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares
13. Percent of Class Represented by Amount in Row (11)
28.4%
14. Type of Reporting Person (See Instructions)
IA
GENERAL INSTRUCTIONS
Item 1.
Security and Issuer:
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