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WESTPORT RESOURCES MANAGEMENT INC
> AMT
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 09/30/2016 | AMERICAN TOWER CORP /MA/ | AMT | 0 | -10,337 | 0 | -1,174,000 | |
| 06/30/2016 | AMERICAN TOWER CORP /MA/ | AMT | 10,337 | 5,187 | 1,174,000 | 797,000 | $113.57 |
| 03/31/2016 | AMERICAN TOWER CORP /MA/ | AMT | 11,257 | 6,107 | 1,152,000 | 775,000 | $102.34 |
| 12/31/2015 | AMERICAN TOWER CORP /MA/ | AMT | 12,967 | 7,817 | 1,257,000 | 880,000 | $96.94 |
| 09/30/2015 | AMERICAN TOWER CORP /MA/ | AMT | 12,602 | 7,452 | 1,109,000 | 732,000 | $88.00 |
| 06/30/2015 | AMERICAN TOWER CORP /MA/ | AMT | 13,252 | 8,102 | 1,236,000 | 859,000 | $93.27 |
| 03/31/2015 | AMERICAN TOWER CORP /MA/ | AMT | 13,327 | 8,177 | 1,255,000 | 878,000 | $94.17 |
| 12/31/2014 | AMERICAN TOWER CORP /MA/ | AMT | 12,942 | 7,792 | 1,279,000 | 902,000 | $98.83 |
| 09/30/2014 | AMERICAN TOWER CORP /MA/ | AMT | 12,820 | 7,670 | 1,200,000 | 823,000 | $93.60 |
| 06/30/2014 | AMERICAN TOWER CORP /MA/ | AMT | 12,170 | 7,020 | 1,095,000 | 718,000 | $89.98 |
| 03/31/2014 | AMERICAN TOWER CORP /MA/ | AMT | 12,220 | 4,220 | 1,000,000 | 407,000 | $81.83 |
| 12/31/2013 | AMERICAN TOWER CORP /MA/ | AMT | 11,230 | 3,230 | 896,000 | 303,000 | $79.79 |
| 09/30/2013 | AMERICAN TOWER CORP /MA/ | AMT | 8,000 | 2,850 | 593,000 | 216,000 | $74.13 |
| 06/30/2013 | AMERICAN TOWER CORP /MA/ | AMT | 5,150 | 100 | 377,000 | -11,000 | $73.20 |
| 03/31/2013 | AMERICAN TOWER CORP /MA/ | AMT | 5,050 | -100 | 388,000 | -10,000 | $76.83 |
| 12/31/2012 | AMERICAN TOWER CORP /MA/ | AMT | 5,150 | 95 | 398,000 | 37,000 | $77.28 |
| 09/30/2012 | AMERICAN TOWER CORP /MA/ | AMT | 5,055 | -703 | 361,000 | -42,000 | $71.41 |
| 06/30/2012 | AMERICAN TOWER CORP /MA/ | AMT | 5,758 | -250 | 403,000 | 24,000 | $69.99 |
| 03/31/2012 | AMERICAN TOWER CORP /MA/ | AMT | 6,008 | -373 | 379,000 | 36,000 | $63.08 |
| 12/31/2011 | AMERICAN TOWER CORP /MA/ | AMT | 6,281 | -100 | 377,000 | 34,000 | $60.02 |
| 09/30/2011 | AMERICAN TOWER CORP /MA/ | AMT | 6,381 | 36 | 343,000 | 11,000 | $53.75 |
| 06/30/2011 | AMERICAN TOWER CORP /MA/ | AMT | 6,345 | -108 | 332,000 | -2,000 | $52.32 |
| 03/31/2011 | AMERICAN TOWER CORP /MA/ | AMT | 6,453 | -25 | 334,000 | -1,000 | $51.76 |
| 12/31/2010 | AMERICAN TOWER CORP /MA/ | AMT | 6,478 | -230 | 335,000 | -9,000 | $51.71 |
| 09/30/2010 | AMERICAN TOWER CORP /MA/ | AMT | 6,708 | 166 | 344,000 | 53,000 | $51.28 |
| 06/30/2010 | AMERICAN TOWER CORP /MA/ | AMT | 6,542 | -74 | 291,000 | 9,000 | $44.48 |
| 03/31/2010 | AMERICAN TOWER CORP /MA/ | AMT | 6,616 | 400 | 282,000 | 13,000 | $42.62 |
| 12/31/2009 | AMERICAN TOWER CORP /MA/ | AMT | 6,216 | 76 | 269,000 | 46,000 | $43.28 |
| 09/30/2009 | AMERICAN TOWER CORP /MA/ | AMT | 6,140 | 0 | 223,000 | 29,000 | $36.32 |
| 06/30/2009 | AMERICAN TOWER CORP /MA/ | AMT | 6,140 | -150 | 194,000 | 3,000 | $31.60 |
| 03/31/2009 | AMERICAN TOWER CORP /MA/ | AMT | 6,290 | -50 | 191,000 | 5,000 | $30.37 |
| 12/31/2008 | AMERICAN TOWER CORP /MA/ | AMT | 6,340 | 2,790 | 186,000 | 58,000 | $29.34 |
| 09/30/2008 | AMERICAN TOWER CORP /MA/ | AMT | 3,550 | 3,550 | 128,000 | 128,000 | $36.06 |
| 06/30/2008 | AMERICAN TOWER CORP /MA/ | AMT | 2,950 | 0 | 125,000 | 9,000 | $42.37 |
| 03/31/2008 | AMERICAN TOWER CORP /MA/ | AMT | 2,950 | 0 | 116,000 | -10,000 | $39.32 |
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