CUSIP No. 00790R104
|
13G
|
Page 2 of 12 Pages
|
1.
|
NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Stockbridge Fund, L.P.
|
||
2.
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)
|
(a) [ ]
(b) [x]
|
|
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
2,305,045
|
||
7.
|
SOLE DISPOSITIVE POWER
0
|
||
8.
|
SHARED DISPOSITIVE POWER
2,305,045
|
||
9.
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,305,045
|
||
10.
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
|
[ ]
|
|
11.
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
4.2%*
|
||
12.
|
TYPE OF REPORTING PERSON
PN
|
* |
Percentage calculations are based on the number of shares of Common Stock outstanding as of January 31, 2017, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
|
CUSIP No. 00790R104
|
13G
|
Page 3 of 12 Pages
|
1.
|
NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Stockbridge Absolute Return Fund, L.P.
|
||
2.
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)
|
(a) [ ]
(b) [x]
|
|
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
7,016
|
||
7.
|
SOLE DISPOSITIVE POWER
0
|
||
8.
|
SHARED DISPOSITIVE POWER
7,016
|
||
9.
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
7,016
|
||
10.
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
|
[ ]
|
|
11.
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
less than 0.1%*
|
||
12.
|
TYPE OF REPORTING PERSON
PN
|
* |
Percentage calculations are based on the number of shares of Common Stock outstanding as of January 31, 2017, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
|
CUSIP No. 00790R104
|
13G
|
Page 4 of 12 Pages
|
1.
|
NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Stockbridge Partners LLC
|
||
2.
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)
|
(a) [ ]
(b) [x]
|
|
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
3,067,096
|
||
7.
|
SOLE DISPOSITIVE POWER
0
|
||
8.
|
SHARED DISPOSITIVE POWER
3,067,096
|
||
9.
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
3,067,096
|
||
10.
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
|
[ ]
|
|
11.
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.6%*
|
||
12.
|
TYPE OF REPORTING PERSON
IA
|
* |
Percentage calculations are based on the number of shares of Common Stock outstanding as of January 31, 2017, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
|
CUSIP No. 00790R104
|
13G
|
Page 5 of 12 Pages
|
1.
|
NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Stockbridge Master Fund (OS), L.P.
|
||
2.
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)
|
(a) [ ]
(b) [x]
|
|
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
200,048
|
||
7.
|
SOLE DISPOSITIVE POWER
0
|
||
8.
|
SHARED DISPOSITIVE POWER
200,048
|
||
9.
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
200,048
|
||
10.
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
|
[ ]
|
|
11.
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.4%*
|
||
12.
|
TYPE OF REPORTING PERSON
PN
|
* |
Percentage calculations are based on the number of shares of Common Stock outstanding as of January 31, 2017, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
|
CUSIP No. 00790R104
|
13G
|
Page 6 of 12 Pages
|
1.
|
NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Berkshire Partners Holdings LLC
|
||
2.
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)
|
(a) [ ]
(b) [x]
|
|
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
3,067,096
|
||
7.
|
SOLE DISPOSITIVE POWER
0
|
||
8.
|
SHARED DISPOSITIVE POWER
3,067,096
|
||
9.
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
3,067,096
|
||
10.
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
|
[ ]
|
|
11.
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.6%*
|
||
12.
|
TYPE OF REPORTING PERSON
OO
|
* |
Percentage calculations are based on the number of shares of Common Stock outstanding as of January 31, 2017, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
|
CUSIP No. 00790R104
|
13G
|
Page 7 of 12 Pages
|
1.
|
NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
BPSP, L.P.
|
||
2.
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(see instructions)
|
(a) [ ]
(b) [x]
|
|
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
3,067,096
|
||
7.
|
SOLE DISPOSITIVE POWER
0
|
||
8.
|
SHARED DISPOSITIVE POWER
3,067,096
|
||
9.
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
3,067,096
|
||
10.
|
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
|
[ ]
|
|
11.
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.6%*
|
||
12.
|
TYPE OF REPORTING PERSON
PN
|
* |
Percentage calculations are based on the number of shares of Common Stock outstanding as of January 31, 2017, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2016.
|
CUSIP No. 00790R104
|
13G
|
Page 8 of 12 Pages
|
CUSIP No. 00790R104
|
13G
|
Page 9 of 12 Pages
|
STOCKBRIDGE FUND, L.P.
|
||||
By: Stockbridge Associates LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
STOCKBRIDGE ABSOLUTE RETURN FUND, L.P.
|
||||
By: Stockbridge Associates LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
STOCKBRIDGE PARTNERS LLC
|
||||
By: BPSP, L.P.,
its managing member |
||||
By: Berkshire Partners Holdings LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
BERKSHIRE PARTNERS HOLDINGS LLC
|
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
BPSP, L.P.
|
||||
By: Berkshire Partners Holdings LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
STOCKBRIDGE MASTER FUND (OS), L.P.
|
||||
By: Stockbridge Associates LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
Exhibit No.
|
Description
|
1
|
Joint Filing Agreement among Reporting Persons
|
STOCKBRIDGE FUND, L.P.
|
||||
By: Stockbridge Associates LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
STOCKBRIDGE ABSOLUTE RETURN FUND, L.P.
|
||||
By: Stockbridge Associates LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
STOCKBRIDGE PARTNERS LLC
|
||||
By: BPSP, L.P.,
its managing member |
||||
By: Berkshire Partners Holdings LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
BERKSHIRE PARTNERS HOLDINGS LLC
|
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
BPSP, L.P.
|
||||
By: Berkshire Partners Holdings LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|
STOCKBRIDGE MASTER FUND (OS), L.P.
|
||||
By: Stockbridge Associates LLC,
its general partner |
||||
By:
|
||||
Name: |
Sharlyn C. Heslam
|
|||
Title: |
Managing Director
|