SC 13D/A 1 sc13da406297066_02192010.htm AMENDMENT NO. 4 TO THE SCHEDULE 13D sc13da406297066_02192010.htm
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D
(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
§ 240.13d-2(a)

(Amendment No. 4)1

Actel Corporation
(Name of Issuer)

Common Stock, par value $0.001 per share
(Title of Class of Securities)

004934105
(CUSIP Number)
 
MARK MITCHELL
RAMIUS LLC
599 Lexington Avenue, 20th Floor
New York, New York 10022
(212) 845-7988

STEVEN WOLOSKY, ESQ.
OLSHAN GRUNDMAN FROME ROSENZWEIG & WOLOSKY LLP
Park Avenue Tower
65 East 55th Street
New York, New York 10022
(212) 451-2300
(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

February 19, 2010
(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨.

Note:  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See § 240.13d-7 for other parties to whom copies are to be sent.


_______________
1              The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).
 
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RAMIUS VALUE AND OPPORTUNITY MASTER FUND LTD
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
WC
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
CAYMAN ISLANDS
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
1,162,158
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
1,162,158
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,162,158
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
4.4%
14
TYPE OF REPORTING PERSON
 
CO

2
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RCG PB, LTD
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
WC
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
CAYMAN ISLANDS
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
939,136
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
939,136
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
939,136
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
3.6%
14
TYPE OF REPORTING PERSON
 
OO

3
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RAMIUS ENTERPRISE MASTER FUND LTD
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
WC
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
CAYMAN ISLANDS
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
296,621
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
296,621
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
296,621
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
1.1%
14
TYPE OF REPORTING PERSON
 
CO

4
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RAMIUS NAVIGATION MASTER FUND LTD
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
WC
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
CAYMAN ISLANDS
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
605,460
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
605,460
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
605,460
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
2.3%
14
TYPE OF REPORTING PERSON
 
CO

5
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RAMIUS ADVISORS, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
1,235,757
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
1,235,757
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,235,757
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
4.7%
14
TYPE OF REPORTING PERSON
 
CO

6
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RCG STARBOARD ADVISORS, LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
1,162,158
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
1,162,158
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
1,162,158
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
4.4%
14
TYPE OF REPORTING PERSON
 
OO

7
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RAMIUS LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
2,397,915
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
2,397,915
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
OO

8
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
COWEN GROUP, INC.
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
2,397,915
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
2,397,915
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
CO

9
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
RCG HOLDINGS LLC
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
2,397,915
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
2,397,915
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
OO

10
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
C4S & CO., L.L.C.
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
2,397,915
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
2,397,915
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
OO

11
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
PETER A. COHEN
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
- 0 -
8
SHARED VOTING POWER
 
2,397,915
9
SOLE DISPOSITIVE POWER
 
- 0 -
10
SHARED DISPOSITIVE POWER
 
2,397,915
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
IN

12
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
MORGAN B. STARK
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
- 0 -
8
SHARED VOTING POWER
 
2,397,915
9
SOLE DISPOSITIVE POWER
 
- 0 -
10
SHARED DISPOSITIVE POWER
 
2,397,915
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
IN

13
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
JEFFREY M. SOLOMON
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
- 0 -
8
SHARED VOTING POWER
 
2,397,915
9
SOLE DISPOSITIVE POWER
 
- 0 -
10
SHARED DISPOSITIVE POWER
 
2,397,915
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
IN

14
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
THOMAS W. STRAUSS
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
OO
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
- 0 -
8
SHARED VOTING POWER
 
2,397,915
9
SOLE DISPOSITIVE POWER
 
- 0 -
10
SHARED DISPOSITIVE POWER
 
2,397,915
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,397,915
12
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
 
o
13
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
9.2%
14
TYPE OF REPORTING PERSON
 
IN

15
CUSIP NO. 004934105
 
1
NAME OF REPORTING PERSON
 
JEFFREY C. SMITH
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
  (a) x
  (b) o
3
SEC USE ONLY
 
4
SOURCE OF FUNDS
 
 
5
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
 
¨
6
CITIZENSHIP OR PLACE OF ORGANIZATION
 
USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
7
SOLE VOTING POWER
 
- 0 -1
8
SHARED VOTING POWER
 
- 0 -
9
SOLE DISPOSITIVE POWER
 
- 0 -1
10
SHARED DISPOSITIVE POWER
 
- 0 -
11
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
- 0 -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)
 
0%
14
TYPE OF REPORTING PERSON
 
IN
 
1 See Item 5.

16
CUSIP NO. 004934105
 
The following constitutes Amendment No. 4 to the Schedule 13D filed by the undersigned (“Amendment No. 4”).  This Amendment No. 4 amends the Schedule 13D as specifically set forth.
 
Item 2.
Identity and Background.
 
Item 2 is hereby amended and restated to read as follows:
 
(a)           This statement is filed by:
 
 
(i)
Ramius Value and Opportunity Master Fund Ltd, a Cayman Islands exempted company (“Value and Opportunity Master Fund”), with respect to the Shares directly and beneficially owned by it;
 
 
(ii)
Ramius Enterprise Master Fund Ltd, a Cayman Islands exempted company (“Enterprise Master Fund”), with respect to the Shares directly and beneficially owned by it;
 
 
(iii)
Ramius Navigation Master Fund Ltd, a Cayman Islands exempted company (“Navigation Master Fund”), with respect to the Shares directly and beneficially owned by it;
 
 
(iv)
RCG PB, Ltd, a Cayman Islands exempted company (“RCG PB”), with respect to the Shares directly and beneficially owned by it and as the sole shareholder of Navigation Master Fund;
 
 
(v)
Ramius Advisors, LLC, a Delaware limited liability company (“Ramius Advisors”), who serves as the investment advisor of Enterprise Master Fund, Navigation Master Fund and RCG PB;
 
 
(vi)
RCG Starboard Advisors, LLC, a Delaware limited liability company (“RCG Starboard Advisors”), who serves as the investment manager of Value and Opportunity Master Fund;
 
 
(vii)
Ramius LLC, a Delaware limited liability company (“Ramius”), who serves as the sole member of each of RCG Starboard Advisors and Ramius Advisors;
 
 
(viii)
Cowen Group, Inc., a Delaware corporation (“Cowen”), who serves as the sole member of Ramius;
 
 
(ix)
RCG Holdings LLC, a Delaware limited liability company (“RCG Holdings”), who is a significant shareholder of Cowen;
 
 
(x)
C4S & Co., L.L.C., a Delaware limited liability company (“C4S”), who serves as managing member of RCG Holdings;
 
 
(xi)
Peter A. Cohen, who serves as one of the managing members of C4S;
 
 
(xii)
Morgan B. Stark, who serves as one of the managing members of C4S;
 
 
(xiii)
Thomas W. Strauss, who serves as one of the managing members of C4S;
 
17
CUSIP NO. 004934105
 
 
(xiv)
Jeffrey M. Solomon, who serves as one of the managing members of C4S; and
 
 
(xv)
Jeffrey C. Smith, who serves on the Board of Directors of the Issuer and as a Partner and Managing Director of Ramius and a member of Cowen’s Operating Committee.
 
Each of the foregoing is referred to as a "Reporting Person" and collectively as the "Reporting Persons." Each of the Reporting Persons is party to that certain Joint Filing Agreement, as further described in Item 6.  Accordingly, the Reporting Persons are hereby filing a joint Schedule 13D.
 
(b)           The address of the principal office of each of Ramius Advisors, RCG Starboard Advisors, Ramius, Cowen, RCG Holdings, C4S, and Messrs. Cohen, Stark, Strauss, Solomon and Smith is 599 Lexington Avenue, 20th Floor, New York, New York 10022.
 
The address of the principal office of each of Value and Opportunity Master Fund, Enterprise Master Fund, Navigation Master Fund and RCG PB is c/o Citco Fund Services (Cayman Islands) Limited, Regatta Office Park, Windward 1, 2nd Floor, PO Box 31106, Grand Cayman KY1-1205, Cayman Islands.  The officers and directors of Value and Opportunity Master Fund and their principal occupations and business addresses are set forth on Schedule B and incorporated by reference in this Item 2.  The officers and directors of Enterprise Master Fund and their principal occupations and business addresses are set forth on Schedule C and incorporated by reference in this Item 2.  The officers and directors of Navigation Master Fund and their principal occupations and business addresses are set forth on Schedule D and incorporated by reference in this Item 2.  The officers and directors of RCG PB and their principal occupations and business addresses are set forth on Schedule E and incorporated by reference in this Item 2.  The officers and directors of Cowen and their principal occupations and business addresses are set forth on Schedule F and incorporated by reference in this Item 2.
 
(c)           The principal business of each of Value and Opportunity Master Fund, Enterprise Master Fund, RCG PB and Navigation Master Fund is serving as a private investment fund.  Value and Opportunity Master Fund has been formed for the purpose of making equity investments and, on occasion, taking an active role in the management of portfolio companies in order to enhance shareholder value.  Each of Enterprise Master Fund and Navigation Master Fund has been formed for the purpose of making equity and debt investments.  RCG PB is the sole shareholder of Navigation Master Fund.  The principal business of RCG Starboard Advisors is acting as the investment manager of Value and Opportunity Master Fund.  The principal business of Ramius Advisors is acting as the investment advisor of Navigation Master Fund, Enterprise Master Fund and RCG PB.  Ramius is engaged in money management and investment advisory services for third parties and proprietary accounts and serves as the sole member of each of RCG Starboard Advisors and Ramius Advisors.  Cowen provides alternative investment management, investment banking, research, and sales and trading services through its business units, Ramius and Cowen and Company.  Cowen also serves as the sole member of Ramius.  RCG Holdings is a significant shareholder of Cowen.  C4S serves as managing member of Ramius.  Messrs. Cohen, Strauss, Stark and Solomon serve as co-managing members of C4S.  Mr. Smith serves as a Partner and Managing Director of Ramius and a member of Cowen’s Operating Committee.
 
(d)           No Reporting Person, nor any person listed on Schedule B, Schedule C, Schedule D, Schedule E or Schedule F, each annexed hereto, has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).
 
(e)           No Reporting Person, nor any person listed on Schedule B, Schedule C, Schedule D, Schedule E or Schedule F, each annexed hereto, has, during the last five years, been party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
 
18
CUSIP NO. 004934105
 
(f)           Messrs. Cohen, Stark, Strauss, Solomon  and Smith are citizens of the United States of America.
 
Item 3.
Source and Amount of Funds or Other Consideration.
 
Item 3 is hereby amended and restated to read as follows:
 
The Shares purchased by Value and Opportunity Master Fund, Navigation Master Fund, RCG PB and Enterprise Master Fund were purchased with working capital (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business) in open market purchases, except as otherwise noted, as set forth in Schedule A, which is incorporated by reference herein.  The aggregate purchase cost of the 2,397,915 Shares beneficially owned in the aggregate by Value and Opportunity Master Fund, Navigation Master Fund, RCG PB and Enterprise Master Fund is approximately $25,801,000, excluding brokerage commissions.
 
Item 5.
Interest in Securities of the Issuer.
 
Item 5 is hereby amended and restated to read as follows:
 
The aggregate percentage of Shares reported owned by each person named herein is based upon 26,184,832 Shares outstanding, as of November 10, 2009, which is the total number of Shares outstanding as reported in the Issuer’s Quarterly Report on Form 10-Q, filed with the Securities and Exchange Commission on November 12, 2009.
 
A.
Value and Opportunity Master Fund
 
 
(a)
As of close of the close of business on February 22, 2010, Value and Opportunity Master Fund beneficially owned 1,162,158 Shares.
 
Percentage: Approximately 4.4%.
 
 
(b)
1. Sole power to vote or direct vote: 1,162,158
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 1,162,158
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
The transactions in the Shares by Value and Opportunity Master Fund during the past 60 days are set forth in Schedule A and are incorporated herein by reference.
 
B.
Navigation Master Fund
 
 
(a)
As of the close of business on February 22, 2010, Navigation Master Fund beneficially owned 605,460 Shares.
 
Percentage: Approximately 2.3%.
 
19
CUSIP NO. 004934105
 
 
(b)
1. Sole power to vote or direct vote: 605,460
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 605,460
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
The transactions in the Shares by Navigation Master Fund during the past 60 days are set forth in Schedule A and are incorporated herein by reference.
 
C.
Enterprise Master Fund
 
 
(a)
As of the close of business on February 22, 2010, Enterprise Master Fund beneficially owned 296,621 Shares.
 
Percentage: Approximately 1.1%.
 
 
(b)
1. Sole power to vote or direct vote: 296,621
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 296,621
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
The transactions in the Shares by Enterprise Master Fund during the past 60 days are set forth in Schedule A and are incorporated herein by reference.
 
D.
RCG PB
 
 
(a)
As of the close of business on February 22, 2010, RCG PB directly owned 333,676 Shares.  RCG PB, as the sole shareholder of Navigation Master Fund, may be deemed the beneficial owner of the 605,460 Shares owned by Navigation Master Fund.
 
Percentage: Approximately 3.6%.
 
 
(b)
1. Sole power to vote or direct vote: 939,136
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 939,136
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
The transactions in the Shares by RCG PB during the past 60 days are set forth in Schedule A and are incorporated herein by reference.  The transactions in the Shares on behalf of Navigation Master Fund during the past 60 days are set forth on Schedule A and are incorporated herein by reference.
 
E.
Ramius Advisors
 
 
(a)
Ramius Advisors, as the investment advisor of each of Enterprise Master Fund, Navigation Master Fund and RCG PB, may be deemed the beneficial owner of the (i) 296,621 Shares owned by Enterprise Master Fund, (ii) 605,460 Shares owned by Navigation Master Fund and (iii) 333,676 Shares owned by RCG PB.
 
Percentage: Approximately 4.7%.
 
20
CUSIP NO. 004934105
 
 
(b)
1. Sole power to vote or direct vote: 1,235,757
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 1,235,757
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
Ramius Advisors has not entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares by Enterprise Master Fund, Navigation Master Fund and RCG PB during the past 60 days are set forth in Schedule A and are incorporated herein by reference.
 
F.
RCG Starboard Advisors
 
 
(a)
RCG Starboard Advisors, as the investment manager of Value and Opportunity Master Fund may be deemed the beneficial owner of the 1,162,158 Shares owned by Value and Opportunity Master Fund.
 
Percentage: Approximately 4.4%.
 
 
(b)
1. Sole power to vote or direct vote: 1,162,158
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 1,162,158
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
RCG Starboard Advisors has not entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares during the past 60 days on behalf of Value and Opportunity Master Fund are set forth on Schedule A and incorporated herein by reference.
 
G.
Ramius
 
 
(a)
Ramius, as the sole member of each of RCG Starboard Advisors and Ramius Advisors, may be deemed the beneficial owner of the (i) 1,162,158 Shares owned by Value and Opportunity Master Fund, (ii) 605,460 Shares owned by Navigation Master Fund, (iii) 296,621 Shares owned by Enterprise Master Fund and (iv) 333,676 Shares owned by RCG PB.
 
Percentage: Approximately 9.2%.
 
 
(b)
1. Sole power to vote or direct vote: 2,397,915
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 2,397,915
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
Ramius has not entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares during the past 60 days on behalf of Value and Opportunity Master Fund, Navigation Master Fund, Enterprise Master Fund and RCG PB are set forth on Schedule A and incorporated herein by reference.
 
H.
Cowen
 
 
(a)
Cowen, as the sole member of Ramius, may be deemed the beneficial owner of the (i) 1,162,158 Shares owned by Value and Opportunity Master Fund, (ii) 605,460 Shares owned by Navigation Master Fund, (iii) 296,621 Shares owned by Enterprise Master Fund and (iv) 333,676 Shares owned by RCG PB.
 
Percentage: Approximately 9.2%.
 
21
CUSIP NO. 004934105
 
 
(b)
1. Sole power to vote or direct vote: 2,397,915
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 2,397,915
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
Cowen has not entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares during the past 60 days on behalf of Value and Opportunity Master Fund, Navigation Master Fund, Enterprise Master Fund and RCG PB are set forth on Schedule A and incorporated herein by reference.
 
I.
RCG Holdings
 
 
(a)
RCG Holdings, as a significant shareholder of Cowen, may be deemed the beneficial owner of the (i) 1,162,158 Shares owned by Value and Opportunity Master Fund, (ii) 605,460 Shares owned by Navigation Master Fund, (iii) 296,621 Shares owned by Enterprise Master Fund and (iv) 333,676 Shares owned by RCG PB.
 
Percentage: Approximately 9.2%.
 
 
(b)
1. Sole power to vote or direct vote: 2,397,915
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 2,397,915
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
RCG Holdings has not entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares during the past 60 days on behalf of Value and Opportunity Master Fund, Navigation Master Fund, Enterprise Master Fund and RCG PB are set forth on Schedule A and incorporated herein by reference.
 
J.
C4S
 
 
(a)
C4S, as the managing member of RCG Holdings, may be deemed the beneficial owner of the (i) 1,162,158 Shares owned by Value and Opportunity Master Fund, (ii) 605,460 Shares owned by Navigation Master Fund, (iii) 296,621 Shares owned by Enterprise Master Fund and (iv) 333,676 Shares owned by RCG PB.
 
Percentage: Approximately 9.2%.
 
 
(b)
1. Sole power to vote or direct vote: 2,397,915
 
2. Shared power to vote or direct vote: 0
 
3. Sole power to dispose or direct the disposition: 2,397,915
 
4. Shared power to dispose or direct the disposition: 0
 
 
(c)
C4S has not entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares during the past 60 days on behalf of Value and Opportunity Master Fund, Navigation Master Fund, Enterprise Master Fund and RCG PB are set forth on Schedule A and incorporated herein by reference.
 
22
CUSIP NO. 004934105
 
K.
Messrs. Cohen, Stark, Strauss and Solomon
 
 
(a)
Each of Messrs. Cohen, Stark, Strauss and Solomon, as the managing members of C4S, may be deemed the beneficial owner of the (i) 1,162,158 Shares owned by Value and Opportunity Master Fund, (ii) 605,460 Shares owned by Navigation Master Fund, (iii) 296,621 Shares owned by Enterprise Master Fund and (iv) 333,676 Shares owned by RCG PB.
 
Percentage: Approximately 9.2%.
 
 
(b)
1. Sole power to vote or direct vote: 0
 
2. Shared power to vote or direct vote: 2,397,915
 
3. Sole power to dispose or direct the disposition: 0
 
4. Shared power to dispose or direct the disposition: 2,397,915
 
 
(c)
None of Messrs. Cohen, Stark, Strauss or Solomon has entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares during the past 60 days on behalf of Value and Opportunity Master Fund, Navigation Master Fund, Enterprise Master Fund and RCG PB are set forth on Schedule A and incorporated herein by reference.
 
L.
Mr. Smith
 
 
(a)
Mr. Smith does not directly own any Shares.  Mr. Smith, s a member of a “group” for the purposes of Section 13(d)(3) of the Exchange Act, may be deemed to be a beneficial owner of the (i) 1,162,158 Shares owned by Value and Opportunity Master Fund, (ii) 605,460 Shares owned by Navigation Master Fund, (iii) 296,621 Shares owned by Enterprise Master Fund and (iv) 333,676 Shares owned by RCG PB.
 
Percentage: Approximately 9.2%.
 
 
(b)
1. Sole power to vote or direct vote: 0
 
2. Shared power to vote or direct vote: 2,397,915
 
3. Sole power to dispose or direct the disposition: 0
 
4. Shared power to dispose or direct the disposition: 2,397,915
 
 
(c)
Mr. Smith has not entered into any transactions in the Shares during the past 60 days.  The transactions in the Shares during the past 60 days on behalf of Value and Opportunity Master Fund, Navigation Master Fund, Enterprise Master Fund and RCG PB are set forth on Schedule A and incorporated herein by reference.
 
 
(d)
No person other than the Reporting Persons is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, the Shares.
 
 
(e)
Not applicable.
 
23
CUSIP NO. 004934105
 
Item 6.
Contracts, Arrangements, Understandings, or Relationships with Respect to Securities of the Issuer.
 
Item 6 is hereby amended to add the following:
 
On February 19, 2010, Ramius entered into a Purchase Trading Plan Agreement (the “Agreement”) with Craig-Hallum Capital Group LLC, a registered broker-dealer, for the purpose of establishing a trading plan to effect purchases of Shares of the Issuer in compliance with all applicable laws, including, without limitation, Section 10(b) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, including, but not limited to, Rule 10b5-1. 
 
The Agreement allows for the purchase of up to an aggregate of 1,500,000 Shares.  Shares purchased pursuant to the Agreement may be purchased in accordance with trading requirements adopted by the Reporting Persons and the Agreement may be terminated at any time by the Reporting Persons.
 
The purchases disclosed in this Amendment No. 4 that were not pursuant to the Agreement were conducted at a time when the Reporting Persons were not in possession of material nonpublic information about the Shares or the Issuer.
 
A copy of the Agreement is attached hereto as Exhibit 99.1 and is incorporated herein by reference.
 
On February 23, 2010, the Reporting Persons entered into a Joint Filing Agreement in which the Reporting Persons agreed to the joint filing on behalf of each of them of statements on Schedule 13D, with respect to securities of the Issuer, to the extent required by applicable law.  A copy of this agreement is attached hereto as Exhibit 99.2 and is incorporated herein by reference.
 
Item 7.
Material to be Filed as Exhibits.
 
Item 7 is hereby amended to include the following exhibits:
 
 
Exhibit 99.1
Purchase Trading Plan Agreement by and between Ramius LLC and Craig-Hallum Capital Group LLC, dated February 19, 2010.
 
 
Exhibit 99.2
Joint Filing Agreement by and among Ramius Value and Opportunity Master Fund, Ltd, Ramius Navigation Master Fund Ltd, RCG PB, Ltd, Ramius Enterprise Master Fund Ltd, RCG Starboard Advisors, LLC, Ramius Advisors, LLC, Ramius LLC, Cowen Group, Inc., RCG Holdings LLC, C4S & Co., L.L.C., Peter A. Cohen, Morgan B. Stark, Thomas W. Strauss, Jeffrey M. Solomon and Jeffery C. Smith, dated February 23, 2010.
 
24
CUSIP NO. 004934105
 
SIGNATURES
 
After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.
 
Dated:  February 23, 2010

RAMIUS VALUE AND OPPORTUNITY MASTER FUND LTD
By: RCG Starboard Advisors, LLC,
       its investment manager
 
RAMIUS NAVIGATION MASTER FUND LTD
By: Ramius Advisors, LLC,
       its investment advisor
 
RAMIUS ENTERPRISE MASTER FUND LTD
By: Ramius Advisors, LLC,
       its investment advisor
 
RCG PB, LTD
By: Ramius Advisors, LLC,
       its investment advisor
 
RCG STARBOARD ADVISORS, LLC
By: Ramius LLC,
       its sole member
 
RAMIUS ADVISORS, LLC
By: Ramius LLC,
       its sole member
 
RAMIUS LLC
By: Cowen Group, Inc.,
       its sole member
 
COWEN GROUP, INC.
 
RCG HOLDINGS LLC
By: C4S & Co., L.L.C.,
       its managing member
 
C4S & CO., L.L.C.
 

 
By:
/s/ Jeffrey M. Solomon
 
Name:
Jeffrey M. Solomon
 
Title:
Authorized Signatory


/s/ Jeffrey M. Solomon
JEFFREY M. SOLOMON
Individually and as attorney-in-fact for
Peter A. Cohen, Morgan B. Stark and Thomas W. Strauss


/s/ Jeffrey C. Smith
JEFFREY C. SMITH
 
25
CUSIP NO. 004934105
 
SCHEDULE A

Transactions in the Shares During the Past 60 Days

Shares of Common Stock
Purchased/ (Sold)
Price Per
Share($)
Date of
Purchase/ Sale

RAMIUS VALUE AND OPPORTUNITY MASTER FUND LTD

4,624
  
11.2788
02/10/2010
2,040
  
11.3429
02/11/2010
714
  
11.8774
02/12/2010
6,256
  
12.2672
02/16/2010
4,998
  
12.2521
02/17/2010
3,910
  
12.4556
02/18/2010
4,182
  
12.7868
02/19/2010
3,808!
  
12.5780
02/22/2010
 
RAMIUS NAVIGATION MASTER FUND LTD
 
21,013#
  
12.1745
01/01/2010
17,548#
  
12.3554
01/01/2010
18,109#
  
12.0034
01/01/2010
17,918#
  
12.0990
01/01/2010
25,950#
  
11.7109
01/01/2010
37,035#
  
11.3513
01/01/2010
7,894#
  
10.0853
01/01/2010
5,585#
  
10.6956
01/01/2010
48,098#
  
10.9450
01/01/2010
2,980#
  
10.5918
01/01/2010
3,838#
  
10.9717
01/01/2010
903#
  
11.0221
01/01/2010
4,876#
  
10.9134
01/01/2010
2,447#
  
9.9830
01/01/2010
27,213#
  
9.8455
01/01/2010
28,403#
  
9.9745
01/01/2010
22,124#
  
11.1523
01/01/2010
8,127#
  
11.5501
01/01/2010
3,341#
  
10.4805
01/01/2010
5,237#
  
10.3925
01/01/2010
31,154#
  
9.7584
01/01/2010
9,211#
  
9.3427
01/01/2010
6,140#
  
8.8566
01/01/2010
9,482#
  
8.6852
01/01/2010
316#
  
8.7771
01/01/2010
13,726#
  
6.8919
01/01/2010
 
! Purchase effected pursuant to a Rule 10b5-1 Purchase Trading Plan. 
# Shares were acquired from RCG PB Ltd, an affiliate of Ramius Navigation Master Fund Ltd, in an exempt transaction.
 
CUSIP NO. 004934105
 
7,901#
  
11.6868
01/01/2010
2,370#
  
11.4200
01/01/2010
3,382#
  
11.5056
01/01/2010
2,149#
  
11.9880
01/01/2010
3,161#
  
12.2471
01/01/2010
196#
  
11.7545
01/01/2010
4,298#
  
11.7434
01/01/2010
295#
  
11.7800
01/01/2010
1,580#
  
11.4203
01/01/2010
5,404#
  
11.3664
01/01/2010
8,192#
  
11.2865
01/01/2010
3,982#
  
12.0054
01/01/2010
9,482#
  
11.5019
01/01/2010
14,254#
  
10.8850
01/01/2010
4,709#
  
10.5220
01/01/2010
29,481#
  
10.2261
01/01/2010
21,357#
  
10.2522
01/01/2010
15,803#
  
10.1071
01/01/2010
12,958#
  
9.9283
01/01/2010
2,844#
  
9.9099
01/01/2010
2,339#
  
9.8328
01/01/2010
23,014#
  
12.9394
01/01/2010
7,585#
  
8.6156
01/01/2010
15,761#
  
13.0444
01/01/2010
8,116#
  
8.6244
01/01/2010
30,401#
  
11.3608
01/01/2010
124,702#
  
11.6824
01/01/2010
25,272#
  
12.0025
01/01/2010
5,924#
  
12.6777
01/01/2010
56,416#
  
12.6662
01/01/2010
5,965#
  
8.9335
01/01/2010
24,098#
  
13.1967
01/01/2010
23,596#
  
13.1726
01/01/2010
9,532#
  
12.3069
01/01/2010
3,976#
  
9.0200
01/01/2010
24,327#
  
12.2029
01/01/2010
303#
  
9.0188
01/01/2010
1,908#
  
9.9520
01/01/2010
5,044#
  
9.8293
01/01/2010
759#
  
9.9067
01/01/2010
(333,676)##
  
10.5700
02/01/2010
1,156
  
11.2788
02/10/2010
510
  
11.3429
02/11/2010
178
  
11.8774
02/12/2010
1,564
  
12.2672
02/16/2010
 
# Shares were acquired from RCG PB Ltd, an affiliate of Ramius Navigation Master Fund Ltd, in an exempt transaction. 
## Shares were transferred to RCG PB Ltd, an affiliate of Ramius Navigation Master Fund Ltd, in an exempt transaction.
 
CUSIP NO. 004934105
 
1,249
  
12.2521
02/17/2010
978
  
12.4556
02/18/2010
1,045
  
12.7868
02/19/2010
952!
  
12.5780
02/22/2010
 
RAMIUS ENTERPRISE MASTER FUND LTD

1,020
  
11.2788
02/10/2010
450
  
11.3429
02/11/2010
158
  
11.8774
02/12/2010
1,380
  
12.2672
02/16/2010
1,103
  
12.2521
02/17/2010
862
  
12.4556
02/18/2010
923
  
12.7868
02/19/2010
840!
  
12.5780
02/22/2010
 
RCG PB, LTD
 
(21,013)*
  
11.8800
01/01/2010
(17,548)*
  
11.8800
01/01/2010
(18,109) *
  
11.8800
01/01/2010
(17,918) *
  
11.8800
01/01/2010
(25,950) *
  
11.8800
01/01/2010
(37,035) *
  
11.8800
01/01/2010
(7,894) *
  
11.8800
01/01/2010
(5,585) *
  
11.8800
01/01/2010
(48,098) *
  
11.8800
01/01/2010
(2,980) *
  
11.8800
01/01/2010
(3,838) *
  
11.8800
01/01/2010
(903) *
  
11.8800
01/01/2010
(4,876) *
  
11.8800
01/01/2010
(2,447) *
  
11.8800
01/01/2010
(27,213) *
  
11.8800
01/01/2010
(28,403) *
  
11.8800
01/01/2010
(22,124) *
  
11.8800
01/01/2010
(8,127) *
  
11.8800
01/01/2010
(3,341) *
  
11.8800
01/01/2010
(5,237) *
  
11.8800
01/01/2010
(31,154) *
  
11.8800
01/01/2010
(9,211) *
  
11.8800
01/01/2010
(6,140) *
  
11.8800
01/01/2010
(9,482) *
  
11.8800
01/01/2010
(316) *
  
11.8800
01/01/2010
(13,726) *
  
11.8800
01/01/2010
(7,901) *
  
11.8800
01/01/2010
(2,370) *
  
11.8800
01/01/2010
 
! Purchase effected pursuant to a Rule 10b5-1 Purchase Trading Plan. 
* Shares were transferred to Ramius Navigation Master Fund Ltd, an affiliate of RCG PB Ltd, in an exempt transaction.
 
CUSIP NO. 004934105
 
(3,382) *
  
11.8800
01/01/2010
(2,149) *
  
11.8800
01/01/2010
(3,161) *
  
11.8800
01/01/2010
(196) *
  
11.8800
01/01/2010
(4,298) *
  
11.8800
01/01/2010
(295) *
  
11.8800
01/01/2010
(1,580) *
  
11.8800
01/01/2010
(5,404) *
  
11.8800
01/01/2010
(8,192) *
  
11.8800
01/01/2010
(3,982) *
  
11.8800
01/01/2010
(9,482) *
  
11.8800
01/01/2010
(14,254) *
  
11.8800
01/01/2010
(4,709) *
  
11.8800
01/01/2010
(29,481) *
  
11.8800
01/01/2010
(21,357) *
  
11.8800
01/01/2010
(15,803) *
  
11.8800
01/01/2010
(12,958) *
  
11.8800
01/01/2010
(2,844) *
  
11.8800
01/01/2010
(2,339) *
  
11.8800
01/01/2010
(23,014) *
  
11.8800
01/01/2010
(7,585) *
  
11.8800
01/01/2010
(15,761) *
  
11.8800
01/01/2010
(8,116) *
  
11.8800
01/01/2010
(30,401) *
  
11.8800
01/01/2010
(124,702) *
  
11.8800
01/01/2010
(25,272) *
  
11.8800
01/01/2010
(5,924) *
  
11.8800
01/01/2010
(56,416) *
  
11.8800
01/01/2010
(5,965) *
  
11.8800
01/01/2010
(24,098) *
  
11.8800
01/01/2010
(23,596) *
  
11.8800
01/01/2010
(9,532) *
  
11.8800
01/01/2010
(3,976) *
  
11.8800
01/01/2010
(24,327) *
  
11.8800
01/01/2010
(303) *
  
11.8800
01/01/2010
(1,908) *
  
11.8800
01/01/2010
(5,044) *
  
11.8800
01/01/2010
(759) *
  
11.8800
01/01/2010
333,676**
  
10.5700
02/01/2010
 
* Shares were transferred to Ramius Navigation Master Fund Ltd, an affiliate of RCG PB Ltd, in an exempt transaction. 
** Shares were acquired from Ramius Navigation Master Fund Ltd, an affiliate of RCG PB Ltd, in an exempt transaction.

CUSIP NO. 004934105
 
 
SCHEDULE B
 
Directors and Officers of Ramius Value and Opportunity Master Fund Ltd
 
Name and Position
  
Principal Occupation
  
Principal Business Address
  
Citizenship
             
Jeffrey M. Solomon
Director
  
Chairman of the Investment Committee of Cowen Group, Inc.
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Mark R. Mitchell
Director
  
Partner Managing Director of Ramius LLC
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
CFS Company Ltd.
Director
  
Nominee Company registered with Cayman Islands Monetary Authority and is affiliated with Administrator of the Fund
  
c/o Citco Fund Services (Cayman Islands) Limited Regatta Office Park
Windward 1, 2nd Floor
PO Box 31106
Grand Cayman KY1-1205 Cayman Islands
 
  
Cayman Islands
CSS Corporation Ltd.
Secretary
  
Affiliate of the Administrator of the Fund
  
c/o Citco Fund Services (Cayman Islands) Limited Regatta Office Park
Windward 1, 2nd Floor
PO Box 31106
Grand Cayman KY1-1205 Cayman Islands
 
  
Cayman Islands
CSS Corporation Ltd.
Secretary
  
Affiliate of the Administrator of the Fund
  
c/o Citco Fund Services (Cayman Islands) Limited Regatta Office Park
Windward 1, 2nd Floor
PO Box 31106
Grand Cayman KY1-1205 Cayman Islands
 
  
Cayman Islands

CUSIP NO. 004934105
 
SCHEDULE C
 
Directors and Officers of Ramius Enterprise Master Fund Ltd
 
Name and Position
  
Principal Occupation
  
Principal Business Address
  
Citizenship
             
Morgan B. Stark
Director
  
Chief Executive Officer and President of Ramius LLC
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Marran Ogilvie
Director
  
Chief of Staff of Cowen Group, Inc.
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
CFS Company Ltd.
Director
  
Nominee Company registered with Cayman Islands Monetary Authority and is affiliated with Administrator of the Fund
  
c/o Citco Fund Services (Cayman Islands) Limited Regatta Office Park
Windward 1, 2nd Floor
PO Box 31106
Grand Cayman KY1-1205 Cayman Islands
 
  
Cayman Islands
CSS Corporation Ltd.
Secretary
  
Affiliate of the Administrator of the Fund
  
c/o Citco Fund Services (Cayman Islands) Limited Regatta Office Park
Windward 1, 2nd Floor
PO Box 31106
Grand Cayman KY1-1205 Cayman Islands
 
  
Cayman Islands

CUSIP NO. 004934105
 
SCHEDULE D
 
Directors and Officers of Ramius Navigation Master Fund Ltd
 
Name and Position
  
Principal Occupation
  
Principal Business Address
  
Citizenship
             
Jeffrey C. Smith
Director
  
Partner Managing Director of Ramius LLC
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Marran Ogilvie
Director
  
Chief of Staff of Cowen Group, Inc.
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States

CUSIP NO. 004934105
 
SCHEDULE E
 
Directors and Officers of RCG PB, Ltd
 
Name and Position
  
Principal Occupation
  
Principal Business Address
  
Citizenship
             
Morgan B. Stark
Director
  
Chief Executive Officer and President of Ramius LLC
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Marran Ogilvie
Director
  
Chief of Staff of Cowen Group, Inc.
  
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
CFS Company Ltd.
Director
  
Nominee Company registered with Cayman Islands Monetary Authority and is affiliated with Administrator of the Fund
  
c/o Citco Fund Services (Cayman Islands) Limited Regatta Office Park
Windward 1, 2nd Floor
PO Box 31106
Grand Cayman KY1-1205 Cayman Islands
 
  
Cayman Islands
CSS Corporation Ltd.
Secretary
  
Affiliate of the Administrator of the Fund
  
c/o Citco Fund Services (Cayman Islands) Limited Regatta Office Park
Windward 1, 2nd Floor
PO Box 31106
Grand Cayman KY1-1205 Cayman Islands
 
  
Cayman Islands

CUSIP NO. 004934105

SCHEDULE F
 
Directors and Officers of Cowen Group, Inc.
 
Name and Position
  
Principal Occupation
  
Principal Business Address
  
Citizenship
             
Peter A. Cohen
Chairman of the Board and Chief Executive Officer
  
Chief Executive Officer of Cowen Group, Inc.
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Jules B. Kroll
Director
  
President of JEMKroll Group
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
David M. Malcolm
Director
  
President and Chief Executive Officer of Cowen and Company
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Jerome S. Markowitz
Director
  
Senior Partner at Conifer Securities LLC
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Jack H. Nusbaum
Director
  
Chairman of Willkie Farr & Gallagher LLP
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
L. Thomas Richards, M.D.
Director
  
Physician, UCSF Medical Center
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Edoardo Spezzotti
Director
  
Senior Executive Vice President of Unicredit Group
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
Italy
             
John E. Toffolon, Jr.
Lead Director
  
Director, Westway Group, Inc.
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Charles W.B. Wardell, III
Director
  
Senior Client Partner at Korn/Ferry
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
 
CUSIP NO. 004934105
 
Christopher A. White
Chief Financial Officer
  
Chief Financial Officer of Cowen Group, Inc.
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States
             
Joseph R. Wright
Director
  
Chief Executive Officer and Director of Scientific Games Corporation
  
c/o Cowen Group, Inc.
599 Lexington Avenue
20th Floor
New York, New York 10022
  
United States