CUSIP No. 282225C103
|
SC 13D |
Page 2 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Oak Hill Capital Partners, L.P.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
OO
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
5,212,475
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
5,212,475
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
5,212,475(1)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
21.7%(2)
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(1)
|
5,212,475 shares of Common Stock are owned directly by Oak Hill Capital Partners, L.P., through its general partner, OHCP GenPar, L.P., through OHCP GenPar, L.P.’s general partner, OHCP MGP, LLC. See Item 5(a) herein.
|
(2)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 3 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Oak Hill Capital Management Partners, L.P.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
OO
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
133,654
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
133,654
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
133,654(3)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.6%(4)
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(3)
|
133,654 shares of Common Stock are owned directly by Oak Hill Capital Management Partners, L.P., through its general partner, OHCP GenPar, L.P., through OHCP GenPar, L.P.’s general partner, OHCP MGP, LLC. See Item 5(a) herein.
|
(4)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 4 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
OHCP GenPar, L.P.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
OO
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
5,346,129
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
5,346,129
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
5,346,129(5)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
22.3%(6)
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(5)
|
OHCP GenPar, L.P. beneficially owns the following shares of Common Stock: (i) 5,212,475 shares of Common Stock in its capacity as general partner of Oak Hill Capital Partners, L.P.; and (ii) 133,654 shares of Common Stock in its capacity as general partner of Oak Hill Capital Management Partners, L.P. See Item 5(a) herein.
|
(6)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 5 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
OHCP MGP, LLC
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
5,346,129
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
5,346,129
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
5,346,129(7)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
22.3%(8)
|
|
14
|
TYPE OF REPORTING PERSON
OO
|
(7)
|
See footnote (5) to page relating to OHCP GenPar, L.P. Power is exercised by OHCP MGP, LLC in its capacity as general partner of OHCP GenPar, L.P.
|
(8)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 6 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Oak Hill Venture Fund I, L.P.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
OO
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
785,820
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
785,820
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
785,820(9)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
3.3%
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(9)
|
785,820 shares of Common Stock are owned directly by Oak Hill Venture Fund I, L.P. through its general partner, OHVF GenPar I, L.P., through OHVF GenPar I, L.P.’s general partner, OHVF MGP I, LLC. See Item 5(a) herein.
|
CUSIP No. 282225C103
|
SC 13D |
Page 7 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
OHVF GenPar I, L.P.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
785,820
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
785,820
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
785,820(10)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
3.3%
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(10)
|
Power is exercised by OHVF GenPar I, L.P. in its capacity as general partner to Oak Hill Venture Fund I, L.P. and through its general partner, OHVF MGP I, LLC.
|
CUSIP No. 282225C103
|
SC 13D |
Page 8 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
OHVF MGP I, LLC
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
785,820
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
785,820
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
785,820(11)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
3.3%
|
|
14
|
TYPE OF REPORTING PERSON
OO
|
(11)
|
See footnote (10) to page relating to OHVF GenPar I, L.P. Power is exercised by OHVF MGP I, LLC in its capacity as general partner to OHVF GenPar I, L.P. and through its sole member, FW Group GenPar, Inc.
|
CUSIP No. 282225C103
|
SC 13D |
Page 9 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
FW Group GenPar, Inc.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
785,820
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
785,820
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
785,820(12)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
3.3%
|
|
14
|
TYPE OF REPORTING PERSON
CO
|
(12)
|
See footnote (11) to page relating to OHVF MGP I, LLC. Power is exercised by FW Group GenPar, Inc. in its capacity as sole member of OHVF MGP I, LLC.
|
CUSIP No. 282225C103
|
SC 13D |
Page 10 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
FW Investors V, L.P.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
OO
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
1,921,718
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
1,921,718
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,921,718(13)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
8.0%(14)
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(13)
|
1,921,718 shares of Common Stock are owned directly by FW Investors V, L.P., through its general partner, FW Management II, LLC. See Item 5(a) herein.
|
(14)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 11 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
FW Management II, LLC
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
1,921,718
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
1,921,718
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,921,718(15)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
8.0%(16)
|
|
14
|
TYPE OF REPORTING PERSON
OO
|
(15)
|
See footnote (13) to page relating to FW Investors V, L.P. Power is exercised by FW Management II, LLC in its capacity as general partner to FW Investors V, L.P. through its sole member, J. Taylor Crandall.
|
(16)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 12 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Robert M. Bass
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
United States
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
283,315
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
283,315
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
283,315(17)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
1.2%
|
|
14
|
TYPE OF REPORTING PERSON
IN
|
(17)
|
Represents the shares of Common Stock that are beneficially owned as a result of a previous distribution from FW Ventures I, L.P.
|
CUSIP No. 282225C103
|
SC 13D |
Page 13 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Capital Partnership
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Texas
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
70,727(18)
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
70,727
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
70,727
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.3%
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(18)
|
Represents the shares of Common Stock that are beneficially owned as a result of a previous distribution by FW Ventures I, L.P. Power is exercised by Capital Partnership through its managing partner, Margaret Lee Bass 1980 Trust.
|
CUSIP No. 282225C103
|
SC 13D |
Page 14 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
David G. Brown
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
United States
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
16,166
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
16,166
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
18,666(19)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.1%(20)
|
|
14
|
TYPE OF REPORTING PERSON
IN
|
(19)
|
Represents 16,166 shares of Common Stock that are beneficially owned as a result of a previous distribution by FW Ventures I, L.P. and 2,500 shares of Common Stock that would be beneficially owned upon exercise of director options held by Mr. Brown.
|
(20)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 15 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Mark A. Wolfson
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
United States
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
16,166
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
16,166
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
19,166(21)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.1%(22)
|
|
14
|
TYPE OF REPORTING PERSON
IN
|
(21)
|
Represents 16,166 shares of Common Stock that are beneficially owned as a result of a previous distribution by FW Ventures I, L.P. and 3,000 shares of Common Stock that would be beneficially owned upon exercise of director options held by Mr. Wolfson.
|
(22)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 16 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Group III 31, LLC
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
4,041
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
4,041
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
4,041(23)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 0.1%
|
|
14
|
TYPE OF REPORTING PERSON
OO
|
(23)
|
Represents the shares of Common Stock that are beneficially owned as a result of a previous distribution by FW Ventures I, L.P.
|
CUSIP No. 282225C103
|
SC 13D |
Page 17 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
J. Taylor Crandall (in the capacity described herein)
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
1,925,759
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
1,925,759
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,925,759(24)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
8.0%(25)
|
|
14
|
TYPE OF REPORTING PERSON
IN
|
(24)
|
(i) Solely in his capacity as the sole member of Group III 31, LLC with respect to 4,041 shares of Common Stock, which represents the shares of Common Stock that are beneficially owned as a result of a previous distribution by FW Ventures I, L.P.; and (ii) solely in his capacity as the sole member of FW Management II, LLC with respect to 1,921,718 shares. See footnote (15) to page relating to FW Management II, LLC.
|
(25)
|
Assumes that there are 24,021,937 shares of Common Stock outstanding as of March 31, 2011.
|
CUSIP No. 282225C103
|
SC 13D |
Page 18 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Woodside Partners, L.P.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
12,124
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
12,124
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
12,124(26)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.1%
|
|
14
|
TYPE OF REPORTING PERSON
PN
|
(26)
|
Represents the shares of Common Stock that are directly owned by Woodside Partners, L.P. as a result of a previous distribution by FW Ventures I, L.P. Woodside Partners, L.P. owns the shares through its general partner, Tonandowah, L.L.C., of which the sole member is Caroline Jean Crandall 1998 Trust, of which John Fant is the sole trustee.
|
CUSIP No. 282225C103
|
SC 13D |
Page 19 of 27
|
1
|
NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON
Tonandowah, L.L.C.
|
|
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) x
|
3
|
SEC USE ONLY
|
|
4
|
SOURCE OF FUNDS
Not applicable
|
|
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)
|
o |
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING PERSON
WITH
|
7
|
SOLE VOTING POWER
12,124
|
8
|
SHARED VOTING POWER
0
|
|
9
|
SOLE DISPOSITIVE POWER
12,124
|
|
10
|
SHARED DISPOSITIVE POWER
0
|
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
12,124(27)
|
|
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o |
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
0.1%
|
|
14
|
TYPE OF REPORTING PERSON
OO
|
(27)
|
Solely in its capacity as the general partner of Woodside Partners, L.P. See footnote (26) to page relating to Woodside Partners, L.P.
|
CUSIP No. 282225C103
|
SC 13D |
Page 20 of 27
|
Reporting Person
|
No. of Shares Issued Upon Exercise of Warrants
|
OHCP
|
154,165
|
OHCMP
|
3,953
|
FWI
|
80,275
|
CUSIP No. 282225C103
|
SC 13D |
Page 21 of 27
|
CUSIP No. 282225C103
|
SC 13D |
Page 22 of 27
|
CUSIP No. 282225C103
|
SC 13D |
Page 23 of 27
|
OAK HILL CAPITAL PARTNERS, L.P. | |||
By: | OHCP GenPar, L.P., its general partner | ||
By: | OHCP MGP, LLC, its general partner | ||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
OAK HILL CAPITAL MANAGEMENT PARTNERS, L.P. | |||
By: | OHCP GenPar, L.P., its general partner | ||
By: | OHCP MGP, LLC, its general partner | ||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
OHCP GENPAR, L.P.
|
|||
By: | OHCP MGP, LLC, its general partner | ||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
CUSIP No. 282225C103
|
SC 13D |
Page 24 of 27
|
OHCP MGP, LLC
|
|||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
OAK HILL VENTURE FUND I, L.P.
|
|||
By: | OHVF GenPar I, L.P., its general partner | ||
By: | OHVF MGP I, LLC, its general partner | ||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
OHVF GENPAR I, L.P.
|
|||
By: | OHVF MGP I, LLC, its general partner | ||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
OHVF MGP I, LLC
|
|||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
CUSIP No. 282225C103
|
SC 13D |
Page 25 of 27
|
FW INVESTORS V, L.P.
|
|||
By: | FW Management II, LLC, its general partner | ||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
FW MANAGEMENT II, LLC
|
|||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
FW GROUP GENPAR, INC.
|
|||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
|
/s/ Kevin G. Levy | ||
KEVIN G. LEVY | |||
Attorney-in-Fact for: | |||
ROBERT M. BASS (1) |
(1)
|
A Power of Attorney authorizing Kevin G. Levy, et al., to act on behalf of Robert M. Bass previously has been filed with the Securities and Exchange Commission.
|
CUSIP No. 282225C103
|
SC 13D |
Page 26 of 27
|
CAPITAL PARTNERSHIP
|
|||
By: | Margaret Lee Bass 1980 Trust, Managing Partner | ||
By: | Panther City Investment Company, Trustee | ||
|
By:
|
/s/ Kevin G. Levy | |
Name: Kevin G. Levy | |||
Title: Vice President | |||
GROUP III 31, LLC
|
|||
By:
|
/s/ Kevin G. Levy | ||
Name: Kevin G. Levy | |||
Title: Vice President | |||
/s/ David G. Brown | |||
DAVID G. BROWN | |||
/s/ Mark A. Wolfson | |||
MARK A. WOLFSON | |||
|
/s/ Kevin G. Levy | ||
KEVIN G. LEVY | |||
Attorney-in-Fact for: | |||
J. TAYLOR CRANDALL (2) |
(2)
|
A Power of Attorney authorizing Kevin G. Levy, et al., to act on behalf of J. Taylor Crandall previously has been filed with the Securities and Exchange Commission.
|
CUSIP No. 282225C103
|
SC 13D |
Page 27 of 27
|
WOODSIDE PARTNERS, L.P.
|
|||
By: | Tonandowah, L.L.C., its general partner | ||
|
By:
|
/s/ John H. Fant | |
Name: John H. Fant | |||
Title: Vice President | |||
TONANDOWAH, L.L.C.
|
|||
|
By:
|
/s/ John H. Fant | |
Name: John H. Fant | |||
Title: Trustee of the Caroline Jean Crandall 1998 Trust,
sole member of Tonandowah, L.L.C.
|
|||