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| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2019 | ASPEN TECHNOLOGY INC | AZPN | 9,325 | -15,162 | 1,158,000 | -1,395,000 | $124.18 |
| 03/31/2019 | ASPEN TECHNOLOGY INC | AZPN | 24,487 | -9,529 | 2,553,000 | -242,000 | $104.26 |
| 12/31/2018 | ASPEN TECHNOLOGY INC | AZPN | 34,016 | -66,504 | 2,795,000 | -8,655,000 | $82.17 |
| 09/30/2018 | ASPEN TECHNOLOGY INC | AZPN | 100,520 | -42,106 | 11,450,000 | -1,777,000 | $113.91 |
| 06/30/2018 | ASPEN TECHNOLOGY INC | AZPN | 142,626 | 6,002 | 13,227,000 | 2,449,000 | $92.74 |
| 03/31/2018 | ASPEN TECHNOLOGY INC | AZPN | 136,624 | 6,523 | 10,778,000 | 2,166,000 | $78.89 |
| 12/31/2017 | ASPEN TECHNOLOGY INC | AZPN | 130,101 | 8,121 | 8,612,000 | 845,000 | $66.19 |
| 09/30/2017 | ASPEN TECHNOLOGY INC | AZPN | 121,980 | 1,720 | 7,767,000 | 1,122,000 | $63.67 |
| 06/30/2017 | ASPEN TECHNOLOGY INC | AZPN | 120,260 | 1,252 | 6,645,000 | -366,000 | $55.26 |
| 03/31/2017 | ASPEN TECHNOLOGY INC | AZPN | 119,008 | -19,076 | 7,011,000 | -539,000 | $58.91 |
| 12/31/2016 | ASPEN TECHNOLOGY INC | AZPN | 138,084 | -58 | 7,550,000 | 1,087,000 | $54.68 |
| 09/30/2016 | ASPEN TECHNOLOGY INC | AZPN | 138,142 | -102,211 | 6,463,000 | -3,208,000 | $46.79 |
| 06/30/2016 | ASPEN TECHNOLOGY INC | AZPN | 240,353 | -802,447 | 9,671,000 | -26,535,000 | $40.24 |
| 03/31/2016 | ASPEN TECHNOLOGY INC | AZPN | 234,011 | -808,789 | 8,454,000 | -27,752,000 | $36.13 |
| 12/31/2015 | ASPEN TECHNOLOGY INC | AZPN | 262,432 | -780,368 | 9,909,000 | -26,297,000 | $37.76 |
| 09/30/2015 | ASPEN TECHNOLOGY INC | AZPN | 329,064 | -38,756 | 12,474,000 | -4,280,000 | $37.91 |
| 06/30/2015 | ASPEN TECHNOLOGY INC | AZPN | 367,820 | -674,980 | 16,754,000 | -19,452,000 | $45.55 |
| 03/31/2015 | ASPEN TECHNOLOGY INC | AZPN | 594,689 | -201,592 | 22,889,000 | -4,996,000 | $38.49 |
| 12/31/2014 | ASPEN TECHNOLOGY INC | AZPN | 796,281 | -246,519 | 27,885,000 | -8,321,000 | $35.02 |
| 09/30/2014 | ASPEN TECHNOLOGY INC | AZPN | 951,966 | -90,834 | 35,908,000 | -298,000 | $37.72 |
| 06/30/2014 | ASPEN TECHNOLOGY INC | AZPN | 1,014,661 | -28,139 | 47,080,000 | 10,874,000 | $46.40 |
| 03/31/2014 | ASPEN TECHNOLOGY INC | AZPN | 1,048,358 | 5,558 | 44,408,000 | 8,202,000 | $42.36 |
| 12/31/2013 | ASPEN TECHNOLOGY INC | AZPN | 1,190,025 | 147,225 | 49,743,000 | 13,537,000 | $41.80 |
| 09/30/2013 | ASPEN TECHNOLOGY INC | AZPN | 1,042,800 | -21,336 | 36,206,000 | 5,570,000 | $34.72 |
| 06/30/2013 | ASPEN TECHNOLOGY INC | AZPN | 1,064,136 | -261,715 | 30,636,000 | -6,010,522 | $28.79 |
| 03/31/2013 | ASPEN TECHNOLOGY INC | AZPN | 1,066,688 | -259,163 | 34,443,356 | -2,203,166 | $32.29 |
| 12/31/2012 | ASPEN TECHNOLOGY INC | AZPN | 1,325,851 | -3,322 | 36,646,522 | 2,300,692 | $27.64 |
| 09/30/2012 | ASPEN TECHNOLOGY INC | AZPN | 1,329,173 | -88,476 | 34,345,830 | 1,527,256 | $25.84 |
| 06/30/2012 | ASPEN TECHNOLOGY INC | AZPN | 1,417,649 | -1,900,021 | 32,818,574 | -35,293,192 | $23.15 |
| 03/31/2012 | ASPEN TECHNOLOGY INC | AZPN | 3,317,670 | 1,637,646 | 68,111,766 | 38,963,350 | $20.53 |
| 12/31/2011 | ASPEN TECHNOLOGY INC | AZPN | 1,680,024 | -53,314 | 29,148,416 | 2,680,345 | $17.35 |
| 09/30/2011 | ASPEN TECHNOLOGY INC | AZPN | 1,733,338 | 257,336 | 26,468,071 | 1,110,357 | $15.27 |
| 06/30/2011 | ASPEN TECHNOLOGY INC | AZPN | 1,476,002 | -6,312 | 25,357,714 | 3,137,827 | $17.18 |
| 03/31/2011 | ASPEN TECHNOLOGY INC | AZPN | 1,482,314 | 60,287 | 22,219,887 | 4,160,144 | $14.99 |
| 12/31/2010 | ASPEN TECHNOLOGY INC | AZPN | 1,422,027 | 75,054 | 18,059,743 | 4,091,633 | $12.70 |
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