| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| WM | SVP - Southern Group | Jul 30, 2012 | Option Exercise | $19.61 | 8,150 | 159,822 | 44,691 | Jul 31, 2012, 10:56 AM |
| WM | SVP - Southern Group | Jul 27, 2012 | Option Exercise | $19.61 | 850 | 16,669 | 37,156 | Jul 31, 2012, 10:56 AM |
| WM | SVP - Southern Group | Jul 30, 2012 | Sale | $34.50 | 5,932 | 204,654 | 38,759 | Jul 31, 2012, 10:56 AM |
| WM | SVP - Southern Group | Jul 27, 2012 | Sale | $34.50 | 615 | 21,218 | 36,541 | Jul 31, 2012, 10:56 AM |
| WM | SVP - Southern Group | Feb 16, 2012 | Option Exercise | $34.44 | 19,198 | 661,275 | 35,898 | Feb 21, 2012, 10:18 AM |
| WM | SVP - Southern Group | Jan 03, 2012 | Option Exercise | $27.55 | 7,500 | 206,602 | 23,231 | Jan 05, 2012, 02:17 PM |
| WM | SVP - Southern Group | Jan 03, 2012 | Sale | $33.15 | 6,778 | 224,690 | 23,179 | Jan 05, 2012, 02:17 PM |
| WM | Senior Vice President | Dec 13, 2010 | Option Exercise | $24.01 | 1,875 | 45,019 | 16,132 | Dec 14, 2010, 02:16 PM |
| WM | Senior Vice President | Dec 13, 2010 | Sale | $36.00 | 1,481 | 53,316 | 14,651 | Dec 14, 2010, 02:16 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| WM | SVP - Southern Group | Jul 30, 2012 | Option Exercise | 159,822 |
| WM | SVP - Southern Group | Jul 27, 2012 | Option Exercise | 16,669 |
| WM | SVP - Southern Group | Jul 30, 2012 | Sale | 204,654 |
| WM | SVP - Southern Group | Jul 27, 2012 | Sale | 21,218 |
| WM | SVP - Southern Group | Feb 16, 2012 | Option Exercise | 661,275 |
| WM | SVP - Southern Group | Jan 03, 2012 | Option Exercise | 206,602 |
| WM | SVP - Southern Group | Jan 03, 2012 | Sale | 224,690 |
| WM | Senior Vice President | Dec 13, 2010 | Option Exercise | 45,019 |
| WM | Senior Vice President | Dec 13, 2010 | Sale | 53,316 |