Van Eck Associates Corporation
| | Direct | | Jul 11, 2017 | 58,500 |
Setanta Asset Management
| Bought at price 3.73 per share. | Direct | 60,992 | Jul 05, 2017 | 16,352 |
Invesco Canada Ltd.
| Sold at price 3.80 per share. | Direct | 7 | Jul 03, 2017 | 2 |
Van Eck Associates Corporation
| | Direct | | Jul 03, 2017 | 58,440 |
Van Eck Associates Corporation
| | Direct | | Jun 30, 2017 | 109,710 |
Man Group Plc
| Decrease at price 3.87 per share. | Direct | 13,168 | Jun 30, 2017 | 3,400 |
BMO Asset Management, Inc.
| Increase at price 3.87 per share. | Direct | 588 | Jun 30, 2017 | 152 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.83 per share. | Direct | 127,550 | Jun 30, 2017 | 33,329 |
Invesco Canada Ltd.
| Sold at price 3.83 per share. | Direct | 59,920 | Jun 30, 2017 | 15,645 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.78 per share. | Direct | 86,900 | Jun 29, 2017 | 23,014 |
Invesco Canada Ltd.
| Bought at price 3.82 per share. | Direct | 754,867 | Jun 29, 2017 | 197,506 |
BlackRock, Inc.
| Increase at price 3.82 per share. | Direct | 28,454 | Jun 29, 2017 | 7,445 |
Van Eck Associates Corporation
| | Direct | | Jun 29, 2017 | 19,480 |
BMO Asset Management, Inc.
| Bought at price 3.86 per share. | Direct | 1,559 | Jun 29, 2017 | 404 |
BMO Asset Management, Inc.
| Sold at price 3.76 per share. | Direct | 13,163 | Jun 29, 2017 | 3,500 |
BMO Asset Management, Inc.
| Bought at price 3.84 per share. | Direct | 10,376 | Jun 28, 2017 | 2,700 |
BlackRock, Inc.
| Increase at price 3.85 per share. | Direct | 21,557 | Jun 28, 2017 | 5,598 |
Man Group Plc
| Decrease at price 3.83 per share. | Direct | 332,270 | Jun 28, 2017 | 86,800 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.82 per share. | Direct | 52,716 | Jun 28, 2017 | 13,800 |
Van Eck Associates Corporation
| Decrease at price 3.73 per share. | Direct | 562,297 | Jun 28, 2017 | 150,750 |
BMO Asset Management, Inc.
| Decrease at price 3.71 per share. | Direct | 49,861 | Jun 27, 2017 | 13,429 |
BlackRock, Inc.
| | Direct | | Jun 27, 2017 | 1,593 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.70 per share. | Direct | 100,955 | Jun 27, 2017 | 27,300 |
Invesco Canada Ltd.
| Sold at price 3.72 per share. | Direct | 25,451 | Jun 27, 2017 | 6,840 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.73 per share. | Direct | 67,904 | Jun 26, 2017 | 18,200 |
BMO Asset Management, Inc.
| Decrease at price 3.72 per share. | Direct | 34,075 | Jun 26, 2017 | 9,170 |
Man Group Plc
| Decrease at price 3.75 per share. | Direct | 44,202 | Jun 26, 2017 | 11,800 |
BlackRock, Inc.
| | Direct | | Jun 26, 2017 | 682 |
BlackRock, Inc.
| Increase at price 3.71 per share. | Direct | 502,105 | Jun 23, 2017 | 135,375 |
BMO Asset Management, Inc.
| | Direct | | Jun 23, 2017 | 456 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.60 per share. | Direct | 105,928 | Jun 23, 2017 | 29,400 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.59 per share. | Direct | 66,415 | Jun 22, 2017 | 18,500 |
BMO Asset Management, Inc.
| Decrease at price 3.58 per share. | Direct | 44,390 | Jun 22, 2017 | 12,417 |
BlackRock, Inc.
| | Direct | | Jun 22, 2017 | 584 |
Wells Capital Management Inc
| Bought at price 3.56 per share. | Direct | 553,811 | Jun 22, 2017 | 155,565 |
Van Eck Associates Corporation
| | Direct | | Jun 22, 2017 | 182,850 |
Setanta Asset Management
| Sold at price 3.58 per share. | Direct | 61,844 | Jun 22, 2017 | 17,275 |
Man Group Plc
| Decrease at price 3.67 per share. | Direct | 6,615 | Jun 21, 2017 | 1,800 |
Van Eck Associates Corporation
| Increase at price 3.67 per share. | Direct | 1,804,788 | Jun 21, 2017 | 491,768 |
BlackRock, Inc.
| | Direct | | Jun 21, 2017 | 2,242 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.62 per share. | Direct | 173,469 | Jun 21, 2017 | 47,880 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.60 per share. | Direct | 127,221 | Jun 20, 2017 | 35,300 |
BlackRock, Inc.
| | Direct | | Jun 20, 2017 | 2,694 |
BMO Asset Management, Inc.
| Increase at price 3.66 per share. | Direct | 48,714 | Jun 20, 2017 | 13,321 |
Wells Capital Management Inc
| Bought at price 3.59 per share. | Direct | 359,000 | Jun 20, 2017 | 100,000 |
BlackRock, Inc.
| Increase at price 3.62 per share. | Direct | 4,589 | Jun 19, 2017 | 1,269 |
Karaian (C)
| Bought at price 3.65 per share. | Direct | 90,080 | Jun 19, 2017 | 24,700 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.66 per share. | Direct | 69,944 | Jun 19, 2017 | 19,100 |
Invesco Canada Ltd.
| Sold at price 3.67 per share. | Direct | 7,050 | Jun 19, 2017 | 1,921 |
BMO Asset Management, Inc.
| Decrease at price 3.67 per share. | Direct | 31,980 | Jun 19, 2017 | 8,714 |
BMO Asset Management, Inc.
| Increase at price 3.67 per share. | Direct | 145,356 | Jun 16, 2017 | 39,596 |
Karaian (C)
| Increase at price 3.61 per share. | Direct | 299,351 | Jun 16, 2017 | 82,900 |
Van Eck Associates Corporation
| Sold at price 3.55 per share. | Direct | 38,923,353 | Jun 16, 2017 | 10,964,325 |
BlackRock, Inc.
| Increase at price 3.67 per share. | Direct | 27,444 | Jun 16, 2017 | 7,476 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.63 per share. | Direct | 150,841 | Jun 16, 2017 | 41,600 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.66 per share. | Direct | 392,912 | Jun 15, 2017 | 107,500 |
BMO Asset Management, Inc.
| | Direct | | Jun 15, 2017 | 0 |
BlackRock, Inc.
| | Direct | | Jun 15, 2017 | 4,144 |
BlackRock, Inc.
| Bought at price 3.64 per share. | Direct | 4,283 | Jun 14, 2017 | 1,177 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.82 per share. | Direct | 63,794 | Jun 14, 2017 | 16,700 |
Wells Capital Management Inc
| Bought at price 3.64 per share. | Direct | 494,639 | Jun 14, 2017 | 135,890 |
BMO Asset Management, Inc.
| Increase at price 3.71 per share. | Direct | 371 | Jun 14, 2017 | 100 |
BMO Asset Management, Inc.
| | Direct | | Jun 13, 2017 | 0 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.83 per share. | Direct | 126,280 | Jun 13, 2017 | 32,980 |
BlackRock, Inc.
| Increase at price 3.84 per share. | Direct | 14,956 | Jun 13, 2017 | 3,898 |
BlackRock, Inc.
| | Direct | | Jun 12, 2017 | 537 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.72 per share. | Direct | 42,814 | Jun 12, 2017 | 11,500 |
Invesco Canada Ltd.
| Bought at price 3.71 per share. | Direct | 30,928 | Jun 12, 2017 | 8,341 |
BMO Asset Management, Inc.
| | Direct | | Jun 12, 2017 | 0 |
BMO Asset Management, Inc.
| Decrease at price 3.63 per share. | Direct | 31,774 | Jun 09, 2017 | 8,751 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.65 per share. | Direct | 55,783 | Jun 09, 2017 | 15,300 |
BlackRock, Inc.
| | Direct | | Jun 09, 2017 | 5,699 |
Investec Asset Management Ltd
| Bought at price 3.78 per share. | Direct | 472,500 | Jun 09, 2017 | 125,000 |
BlackRock, Inc.
| Decrease at price 3.81 per share. | Direct | 18,241 | Jun 08, 2017 | 4,784 |
BMO Asset Management, Inc.
| Increase at price 3.94 per share. | Direct | 71,335 | Jun 08, 2017 | 18,110 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.77 per share. | Direct | 220,712 | Jun 08, 2017 | 58,560 |
Investec Asset Management Ltd
| Bought at price 3.86 per share. | Direct | 2,310,468 | Jun 08, 2017 | 598,567 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.78 per share. | Direct | 119,914 | Jun 07, 2017 | 31,757 |
Investec Asset Management Ltd
| Bought at price 3.86 per share. | Direct | 2,310,468 | Jun 07, 2017 | 598,567 |
BMO Asset Management, Inc.
| Decrease at price 3.79 per share. | Direct | 98,922 | Jun 07, 2017 | 26,101 |
BlackRock, Inc.
| Decrease at price 3.94 per share. | Direct | 9,140 | Jun 07, 2017 | 2,321 |
BlackRock, Inc.
| Increase at price 3.81 per share. | Direct | 10,222 | Jun 06, 2017 | 2,683 |
BMO Asset Management, Inc.
| Decrease at price 3.66 per share. | Direct | 3,263,254 | Jun 06, 2017 | 892,331 |
BMO Asset Management, Inc.
| Increase at price 3.61 per share. | Direct | 31,059 | Jun 06, 2017 | 8,599 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.68 per share. | Direct | 157,461 | Jun 06, 2017 | 42,800 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.47 per share. | Direct | 22,928 | Jun 05, 2017 | 6,600 |
BMO Asset Management, Inc.
| Increase at price 3.61 per share. | Direct | 3,189,601 | Jun 05, 2017 | 884,036 |
Man Group Plc
| Bought at price 3.52 per share. | Direct | 53,436 | Jun 05, 2017 | 15,185 |
BlackRock, Inc.
| | Direct | | Jun 05, 2017 | 1,092 |
BlackRock, Inc.
| Increase at price 3.49 per share. | Direct | 63,494 | Jun 02, 2017 | 18,209 |
Man Group Plc
| Bought at price 3.46 per share. | Direct | 16,526 | Jun 02, 2017 | 4,771 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.52 per share. | Direct | 23,205 | Jun 02, 2017 | 6,600 |
BMO Asset Management, Inc.
| Increase at price 3.47 per share. | Direct | 1,055 | Jun 02, 2017 | 304 |
BMO Asset Management, Inc.
| Increase at price 3.40 per share. | Direct | 1,032 | Jun 01, 2017 | 304 |
Dimensional Fund Advisors, L.P.
| Increase at price 3.40 per share. | Direct | 3,196 | Jun 01, 2017 | 939 |
BlackRock, Inc.
| Increase at price 3.40 per share. | Direct | 18,674 | Jun 01, 2017 | 5,486 |
Man Group Plc
| Bought at price 3.40 per share. | Direct | 122,373 | Jun 01, 2017 | 35,950 |
Van Eck Associates Corporation
| Sold at price 3.41 per share. | Direct | 4,753 | Jun 01, 2017 | 1,394 |
Man Group Plc
| Bought at price 3.38 per share. | Direct | 94,584 | May 31, 2017 | 28,000 |
BlackRock, Inc.
| Sold at price 3.39 per share. | Direct | 39,053 | May 31, 2017 | 11,510 |
BMO Asset Management, Inc.
| Decrease at price 3.38 per share. | Direct | 77,856 | May 31, 2017 | 23,048 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.36 per share. | Direct | 84,075 | May 31, 2017 | 25,000 |
BMO Asset Management, Inc.
| Decrease at price 3.40 per share. | Direct | 1,034 | May 30, 2017 | 304 |
Man Group Plc
| Bought at price 3.40 per share. | Direct | 52,406 | May 30, 2017 | 15,400 |
BlackRock, Inc.
| Sold at price 3.40 per share. | Direct | 33,165 | May 30, 2017 | 9,746 |
BlackRock, Inc.
| | Direct | | May 29, 2017 | 179 |
Karaian (C)
| | Direct | | May 29, 2017 | 0 |
BMO Asset Management, Inc.
| Bought at price 3.47 per share. | Direct | 1,569 | May 29, 2017 | 452 |
BMO Asset Management, Inc.
| Increase at price 3.47 per share. | Direct | 528 | May 26, 2017 | 152 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.47 per share. | Direct | 158,275 | May 26, 2017 | 45,560 |
Invesco Canada Ltd.
| Bought at price 3.42 per share. | Direct | 2,973 | May 26, 2017 | 869 |
BlackRock, Inc.
| Increase at price 3.47 per share. | Direct | 22,706 | May 26, 2017 | 6,536 |
BlackRock, Inc.
| Increase at price 3.41 per share. | Direct | 11,887 | May 25, 2017 | 3,484 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.41 per share. | Direct | 52,544 | May 25, 2017 | 15,400 |
Van Eck Associates Corporation
| Sold at price 3.44 per share. | Direct | 176,513 | May 25, 2017 | 51,312 |
BMO Asset Management, Inc.
| Increase at price 3.44 per share. | Direct | 523 | May 25, 2017 | 152 |
BMO Asset Management, Inc.
| Increase at price 3.42 per share. | Direct | 2,568 | May 24, 2017 | 750 |
Man Group Plc
| Increase at price 3.55 per share. | Direct | 781,365 | May 24, 2017 | 220,103 |
Van Eck Associates Corporation
| Sold at price 3.34 per share. | Direct | 4,094,061 | May 24, 2017 | 1,225,767 |
BlackRock, Inc.
| Increase at price 3.39 per share. | Direct | 43,716 | May 24, 2017 | 12,911 |
Wells Capital Management Inc
| Bought at price 3.37 per share. | Direct | 310,579 | May 24, 2017 | 92,160 |
Man Group Plc
| Bought at price 3.52 per share. | Direct | 374,847 | May 23, 2017 | 106,400 |
Setanta Asset Management
| Bought at price 3.51 per share. | Direct | 1,161,490 | May 23, 2017 | 330,909 |
Van Eck Associates Corporation
| Bought at price 3.55 per share. | Direct | 330,540 | May 23, 2017 | 93,110 |
Van Eck Associates Corporation
| Sold at price 3.50 per share. | Direct | 710,356 | May 23, 2017 | 202,959 |
BMO Asset Management, Inc.
| Increase at price 3.51 per share. | Direct | 49,378 | May 23, 2017 | 14,076 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.54 per share. | Direct | 21,222 | May 23, 2017 | 6,000 |
Invesco Canada Ltd.
| Bought at price 3.51 per share. | Direct | 436,465 | May 23, 2017 | 124,420 |
BlackRock, Inc.
| Increase at price 3.51 per share. | Direct | 20,921 | May 23, 2017 | 5,964 |
BlackRock, Inc.
| | Direct | | May 22, 2017 | 2,512 |
Van Eck Associates Corporation
| Bought at price 3.59 per share. | Direct | 819,711 | May 22, 2017 | 228,332 |
Setanta Asset Management
| Bought at price 3.51 per share. | Direct | 121,993 | May 19, 2017 | 34,756 |
BlackRock, Inc.
| Decrease at price 3.53 per share. | Direct | 2,329 | May 19, 2017 | 660 |
Wells Capital Management Inc
| Bought at price 3.54 per share. | Direct | 18,160 | May 19, 2017 | 5,130 |
BMO Asset Management, Inc.
| Increase at price 3.54 per share. | Direct | 54,640 | May 19, 2017 | 15,444 |
Invesco Canada Ltd.
| Bought at price 3.52 per share. | Direct | 89,913 | May 19, 2017 | 25,580 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.57 per share. | Direct | 156,140 | May 18, 2017 | 43,700 |
Setanta Asset Management
| Bought at price 3.51 per share. | Direct | 54,054 | May 18, 2017 | 15,400 |
Van Eck Associates Corporation
| Sold at price 3.55 per share. | Direct | 621,505 | May 18, 2017 | 175,072 |
BlackRock, Inc.
| Decrease at price 3.54 per share. | Direct | 35,667 | May 18, 2017 | 10,084 |
BMO Asset Management, Inc.
| Increase at price 3.59 per share. | Direct | 546 | May 18, 2017 | 152 |
BMO Asset Management, Inc.
| Increase at price 3.73 per share. | Direct | 566 | May 17, 2017 | 152 |
Dimensional Fund Advisors, L.P.
| Bought at price 3.70 per share. | Direct | 123,143 | May 17, 2017 | 33,300 |
EdgePoint Investment Group, Inc.
| Sold at price 3.71 per share. | Direct | 1,161,831 | May 17, 2017 | 313,500 |
BlackRock, Inc.
| Bought at price 3.70 per share. | Direct | 86,229 | May 17, 2017 | 23,318 |
BlackRock, Inc.
| Increase at price 3.66 per share. | Direct | 5,132 | May 16, 2017 | 1,402 |
BMO Asset Management, Inc.
| Decrease at price 3.67 per share. | Direct | 2,234 | May 16, 2017 | 608 |
Man Group Plc
| Increase at price 3.62 per share. | Direct | 86,613 | May 16, 2017 | 23,900 |
EdgePoint Investment Group, Inc.
| Sold at price 3.67 per share. | Direct | 334,425 | May 16, 2017 | 91,000 |
EdgePoint Investment Group, Inc.
| Sold at price 3.62 per share. | Direct | 82,989 | May 15, 2017 | 22,900 |