CUSIP No. 29268T102
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1. Names of Reporting Person
S.S. or I.R.S. Identificaiton No. of Above Person
David Gelbaum, Trustee, The Quercus Trust
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2. Check the Appropriate Box if a Member of a Group
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(a) x
(b) o
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3. SEC Use Only
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4. Source of Funds
PF
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5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) o
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6. Citizenship or Place of Organization
U.S.
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Number of Shares
Beneficially
Owned by
Each Reporting
Person With:
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7. Sole Voting Power
-0-
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8. Shared Voting Power
5,310,638 (1)
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9. Sole Dispositive Power
-0-
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10. Shared Dispositive Power
5,310,638 (1)
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11. Aggregate Amount Beneficially Owned by Each Reporting Person
5,310,638 (1)
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12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares o
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13. Percent of Class Represented by Amount in Row (11)
22.2%
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14. Type of Reporting Person
IN
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CUSIP No. 29268T102
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1. Names of Reporting Person
S.S. or I.R.S. Identificaiton No. of Above Person
Monica Chavez Gelbaum, Trustee, The Quercus Trust
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2. Check the Appropriate Box if a Member of a Group
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(a) x
(b) o
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|
|
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3. SEC Use Only
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|
4. Source of Funds
PF
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|
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) o
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|
6. Citizenship or Place of Organization
U.S.
|
|
Number of Shares
Beneficially
Owned by
Each Reporting
Person With:
|
7. Sole Voting Power
-0-
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8. Shared Voting Power
5,310,638 (1)
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|
9. Sole Dispositive Power
-0-
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|
10. Shared Dispositive Power
5,310,638 (1)
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|
11. Aggregate Amount Beneficially Owned by Each Reporting Person
5,310,638 (1)
|
|
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares o
|
|
13. Percent of Class Represented by Amount in Row (11)
22.2%
|
|
14. Type of Reporting Person
IN
|
CUSIP No. 29268T102
|
|
1. Names of Reporting Person
S.S. or I.R.S. Identificaiton No. of Above Person
The Quercus Trust
|
|
2. Check the Appropriate Box if a Member of a Group
|
|
(a) x
(b) o
|
|
|
|
3. SEC Use Only
|
|
4. Source of Funds
PF
|
|
5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) o
|
|
6. Citizenship or Place of Organization
U.S.
|
|
Number of Shares
Beneficially
Owned by
Each Reporting
Person With:
|
7. Sole Voting Power
-0-
|
8. Shared Voting Power
5,310,638 (1)
|
|
9. Sole Dispositive Power
-0-
|
|
10. Shared Dispositive Power
5,310,638 (1)
|
|
11. Aggregate Amount Beneficially Owned by Each Reporting Person
5,310,638 (1)
|
|
12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares o
|
|
13. Percent of Class Represented by Amount in Row (11)
22.2%
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14. Type of Reporting Person
OO
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Date | Action | Quantity |
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Security |
Price
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10/13/2010
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Sold
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12,000
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1.27-1.34 |
EFOI
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1.3124
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10/14/2010
|
Sold
|
16,000
|
1.18-1.30 |
EFOI
|
1.242
|
10/15/2010
|
Sold
|
15,000
|
1.18-1.22 |
EFOI
|
1.1808
|
10/18/2010
|
Sold
|
13,000
|
1.18-1.24 |
EFOI
|
1.2092
|
10/19/2010
|
Sold
|
9,000
|
1.19-1.26
|
EFOI
|
1.204
|
10/20/2010
|
Sold
|
13,000
|
1.12-1.16
|
EFOI
|
1.1301
|
10/21/2010
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Sold
|
4,500
|
1.14-1.17
|
EFOI
|
1.1593
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10/22/2010
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Sold
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6,000
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1.16-1.2
|
EFOI
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1.1839
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10/25/2010
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Sold
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7,500
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1.10-1.11
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EFOI
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1.1043
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10/26/2010
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Sold
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9,600
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1.11-1.13
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EFOI
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1.113
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10/29/2010
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Sold
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6,500
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1.11-1.2
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EFOI
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1.15
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11/1/2010
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Sold
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7,500
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1.10-1.15
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EFOI
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1.1239
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11/3/2010
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Sold
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9,000
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1.10-1.18
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EFOI
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1.1301
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11/4/2010
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Sold
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7,500
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1.1-1.15
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EFOI
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1.1107
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11/5/2010
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Sold
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11,000
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1.1-1.2
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EFOI
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1.1557
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11/8/2010
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Sold
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7,500
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1.1-1.19
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EFOI
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1.1222
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11/9/2010
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Sold
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10,500
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1.4-1.2
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EFOI
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1.162
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11/10/2010
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Sold
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7,500
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1.13-1.16
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EFOI
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1.138
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11/11/2010
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Sold
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15,000
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1.13-1.17
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EFOI
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1.1487
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11/12/2010
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Sold
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121,500
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1.10-1.3
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EFOI
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1.1922
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11/15/2010
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Sold
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11,000
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1.10-1.15
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EFOI
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1.1004
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11/16/2010
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Sold
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10,700
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1.10-1.10
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EFOI
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1.1
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11/17/2010
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Sold
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9,000
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1.10-1.12
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EFOI
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1.1016
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11/18/2010
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Sold
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10,500
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1.10-1.14
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EFOI
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1.102
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11/22/2010
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Sold
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17,700
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1.00-1.03
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EFOI
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1.0036
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11/23/2010
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Sold
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4,400
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1.00-1.01
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EFOI
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1
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11/24/2010
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Sold
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6,700
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1.00-1.01
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EFOI
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1.0021
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11/26/2010
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Sold
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10,000
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1.01-1.02
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EFOI
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1.0102
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11/29/2010
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Sold
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14,600
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1.02-1.03
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EFOI
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1.0220
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11/30/2010
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Sold
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14,000
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1-1.02
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EFOI
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1.0001
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12/2/2010
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Sold
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10,000
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1-1.01
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EFOI
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1.00
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12/10/2010
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Sold
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22,600
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1-1.02
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EFOI
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1.0020
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12/13/2010
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Sold
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10,000
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1-1.02
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EFOI
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1.0056
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12/14/2010
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Sold
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5,000
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1-1.02
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EFOI
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1.01
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12/15/2010
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Sold
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12,200
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1-1.01
|
EFOI
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1
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12/16/2010
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Sold
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5,500
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1-1.03
|
EFOI
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1
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12/17/2010
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Sold
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50,000
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1-1.03
|
EFOI
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1.0147
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12/21/2010
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Sold
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9,000
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1
|
EFOI
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1
|
1/4/2011
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Sold
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12,500
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1-1.01
|
EFOI
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1.0022
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1/5/2011
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Sold
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2,000
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1 – 1.06
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EFOI
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1
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1/13/2011
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Sold
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15,000
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1-1.01
|
EFOI
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1.005
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1/14/2011
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Sold
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68,500
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1.04 – 1.09
|
EFOI
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1.0523
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1/18/2011
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Sold
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41,300
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1.01-1.10 |
EFOI
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1.0556
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1/31/2011
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Sold |
42,000
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1 – 1.06
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EFOI |
1.0061
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Dated: February 11, 2011
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/s/ Joseph P. Bartlett, as Attorney-In-Fact for Monica Chavez Gelbaum
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David Gelbaum, Co-Trustee of The Quercus Trust
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/s/ Joseph P. Bartlett, as Attorney-In-Fact for Monica Chavez Gelbaum
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Monica Chavez Gelbaum, Co-Trustee of The Quercus Trust
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/s/ Joseph P. Bartlett, as Attorney-In-Fact for David Gelbaum
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The Quercus Trust, David Gelbaum, Co-Trustee of The Quercus Trust
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Dated: February 11, 2011
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/s/ Joseph P. Bartlett, as Attorney-In-Fact for Monica Chavez Gelbaum
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David Gelbaum, Co-Trustee of The Quercus Trust
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/s/ Joseph P. Bartlett, as Attorney-In-Fact for Monica Chavez Gelbaum
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Monica Chavez Gelbaum, Co-Trustee of The Quercus Trust
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/s/ Joseph P. Bartlett, as Attorney-In-Fact for David Gelbaum
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The Quercus Trust, David Gelbaum, Co-Trustee of The Quercus Trust
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/s/ Monica Chavez Gelbaum
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/s/ David Gelbaum
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