CUSIP
No.: 911805109
|
Page 2
of 9 Pages
|
1.
|
Names
of Reporting Persons.
I.R.S.
Identification Nos. of above persons (entities only).
CORRIENTE
ADVISORS, LLC
|
|||
2.
|
Check
the Appropriate Box if a Member of a Group
(a)
[ ]
(b)
[ ]
|
|||
3.
|
SEC
Use Only
|
|||
4.
|
Citizenship
or Place of Organization
Delaware
|
|||
Number
of
Shares
Beneficially
Owned
by Each
Reporting
Person
With
|
5.
|
Sole Voting Power |
0
|
|
6.
|
Shared Voting Power |
0
|
||
7.
|
Sole Dispositive Power |
0
|
||
8.
|
Shared Dispositive Power |
0
|
||
9.
|
Aggregate
Amount Beneficially Owned by Each Reporting Per
0
|
|||
10.
|
Check
if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions)
[ ]
|
|||
11.
|
Percent
of Class Represented by Amount in Row (9)
0%
based on 21,349,058 shares outstanding as of November 6,
2009.
|
|||
12.
|
Type
of Reporting Person:
OO/IA
|
CUSIP
No.: 911805109
|
Page 3
of 9 Pages
|
1.
|
Names
of Reporting Persons.
I.R.S.
Identification Nos. of above persons (entities only).
MARK
L. HART III
|
|||
2.
|
Check
the Appropriate Box if a Member of a Group
(a)
[ ]
(b)
[ ]
|
|||
3.
|
SEC
Use Only
|
|||
4.
|
Citizenship
or Place of Organization
United
States of America
|
|||
Number
of
Shares
Beneficially
Owned
by Each
Reporting
Person
With
|
5.
|
Sole Voting Power |
0
|
|
6.
|
Shared Voting Power |
0
|
||
7.
|
Sole Dispositive Power |
0
|
||
8.
|
Shared Dispositive Power |
0
|
||
9.
|
Aggregate
Amount Beneficially Owned by Each Reporting Person
0
|
|||
10.
|
Check
if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions)
[ ]
|
|||
11.
|
Percent
of Class Represented by Amount in Row (9)
0%
based on 21,349,058 shares outstanding as of November 6,
2009.
|
|||
12.
|
Type
of Reporting Person:
IN/HC
|
CUSIP
No.: 911805109
|
Page 4
of 9 Pages
|
Item
1(a).
|
Name
of Issuer:
|
Item
1(b).
|
Address of Issuer’s Principal Executive
Offices:
|
Item
2(a).
|
Name
of Person Filing
|
Item
2(b).
|
Address
of Principal Business Office or, if None,
Residence:
|
Item
2(c).
|
Citizenship:
|
CUSIP
No.: 911805109
|
Page 5
of 9 Pages
|
Item
2(d).
|
Title
of Class of Securities:
|
Item
2(e).
|
CUSIP
Number:
|
Item
3.
|
If
This Statement is Filed Pursuant to §§240.13d-1(b) or 240.13d-2(b) or
(c),
Check
Whether the Person Filing is a:
|
Item
4.
|
Ownership:
|
Item
4(a)
|
Amount
Beneficially Owned:
|
Item
4(b)
|
Percent
of Class:
|
Item
4(c)
|
Number
of Shares of which such person has:
|
Corriente
Advisors and Mr. Hart:
|
||
(i)
Sole power to vote or direct the vote:
|
0
|
|
(ii)
Shared power to vote or direct the vote:
|
0
|
|
(iii)
Sole power to dispose or direct the disposition of:
|
0
|
|
(iv)
Shared power to dispose or direct the disposition of:
|
0
|
Item
5.
|
Ownership
of Five Percent or Less of a Class:
|
CUSIP
No.: 911805109
|
Page 6
of 9 Pages
|
Item
6.
|
Ownership
of More than Five Percent on Behalf of Another
Person:
|
Item
7.
|
Identification
and Classification of the Subsidiary Which Acquired the Security Being
Reported on By the Parent Holding
Company:
|
Item
8.
|
Identification
and Classification of Members of the
Group:
|
Item
9.
|
Notice
of Dissolution of Group:
|
Item
10.
|
Certification:
|
CUSIP
No.: 911805109
|
Page 7
of 9 Pages
|
Date:
February 16, 2010
|
CORRIENTE
ADVISORS, LLC
|
|
By:
/s/
James E. Haddaway
|
||
Name:
James E. Haddaway
|
||
Title: President
|
||
Date: February 16,
2010
|
MARK
L. HART III
|
|
/s/ Mark L Hart III
|
||
Name: Mark
L. Hart III
|
||
Title: Chairman and Chief Executive Officer | ||
CUSIP
No.: 911805109
|
Page 8
of 9 Pages
|
Ex.
|
Page
No.
|
|
A
|
Joint
Filing Agreement, dated February 16, 2010 by and among Corriente
Advisors, LLC and Mark L. Hart III
|
9
|
CUSIP
No.: 911805109
|
Page 9
of 9 Pages
|
Date:
February 16, 2010
|
CORRIENTE
ADVISORS, LLC
|
|
By: /s/
James E. Haddaway
|
||
Name:
James E. Haddaway
|
||
Title: President
|
||
Date: February 16,
2010
|
MARK
L. HART III
|
|
/s/ Mark L Hart III
|
||
Name: Mark
L. Hart III
|
||
Title: Chairman and Chief Executive Officer | ||