1. Title of Derivative Security (Instr. 4) |
2. Date Exercisable and Expiration Date (Month/Day/Year) |
3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) |
4. Conversion or Exercise Price of Derivative Security |
5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5) |
6. Nature of Indirect Beneficial Ownership (Instr. 5) |
Date Exercisable |
Expiration Date |
Title |
Amount or Number of Shares |
Options to Purchase Common Shares
|
Â
(2)
|
01/19/2007 |
Common Shares
|
135,761
|
$
27.37
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
11/17/2006 |
Common Shares
|
135,761
|
$
33.23
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
02/20/2007 |
Common Shares
|
312,162
|
$
30.4
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
02/20/2007 |
Common Shares
|
463,134
|
$
31
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
02/22/2007 |
Common Shares
|
312,162
|
$
30.19
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
03/02/2007 |
Common Shares
|
301,943
|
$
30.45
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
03/12/2007 |
Common Shares
|
284,606
|
$
30.944
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
03/12/2007 |
Common Shares
|
142,303
|
$
30.976
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
03/16/2007 |
Common Shares
|
135,761
|
$
29.32
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
03/23/2006 |
Common Shares
|
904,362
|
$
45
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
07/21/2006 |
Common Shares
|
135,761
|
$
29.32
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
09/15/2006 |
Common Shares
|
135,761
|
$
31.28
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
09/27/2006 |
Common Shares
|
449,314
|
$
31.2
|
D
|
Â
|
Options to Purchase Common Shares
|
Â
(2)
|
01/19/2007 |
Common Shares
|
864,239
|
$
27.37
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
11/17/2006 |
Common Shares
|
864,239
|
$
33.23
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
02/20/2007 |
Common Shares
|
187,838
|
$
30.4
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
02/20/2007 |
Common Shares
|
286,866
|
$
31
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
02/22/2007 |
Common Shares
|
187,838
|
$
30.19
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
03/02/2007 |
Common Shares
|
198,057
|
$
30.45
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
03/12/2007 |
Common Shares
|
215,394
|
$
30.944
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
03/12/2007 |
Common Shares
|
107,697
|
$
30.976
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
03/16/2007 |
Common Shares
|
864,239
|
$
29.32
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
03/23/2006 |
Common Shares
|
595,638
|
$
45
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
07/21/2006 |
Common Shares
|
864,239
|
$
29.32
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
09/15/2006 |
Common Shares
|
864,239
|
$
31.28
|
I
|
See footnote.
(1)
|
Options to Purchase Common Shares
|
Â
(2)
|
09/27/2006 |
Common Shares
|
293,686
|
$
31.2
|
I
|
See footnote.
(1)
|
* |
If the form is filed by more than one reporting person, see Instruction 5(b)(v). |
** |
Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). |
(1) |
Represents shares directly beneficially owned by Pershing Square II, L.P., Pershing Square International, Ltd., and Pershing Square Investment II, L.P., respectively, which may be deemed to be indirectly beneficially owned by Pershing Square, L.P. Pershing Square, L.P. disclaims beneficial ownership with respect to the shares directly beneficially by Pershing Square II, L.P., Pershing Square International, Ltd. and Pershing Square Investment II, L.P., respectively, except to the extent of its pecuniary interest therein. |
(2) |
Immediate. |