| 2/13/2020 | Cove Street Capital LLC | 212,831 | $0.89M | 0.1% | +41.4% | 1.723% | |
| 2/13/2020 | Renaissance Technologies LLC | 319,251 | $1.34M | 0.0% | +1.0% | 2.584% | |
| 2/10/2020 | Essex Investment Management Co. LLC | 122,184 | $0.51M | 0.1% | +3.7% | 0.989% | |
| 2/7/2020 | Globeflex Capital L P | 97,464 | $0.41M | 0.1% | +26.3% | 0.792% | |
| 2/5/2020 | Perritt Capital Management Inc. | 537,299 | $2.25M | 1.1% | +4.2% | 4.369% | |
| 11/27/2019 | Millennium Management LLC | 41,522 | $0.19M | 0.0% | +11.1% | 0.345% | |
| 10/31/2019 | California Public Employees Retirement System | 211,866 | $0.96M | 0.0% | +5.8% | 1.760% | |
| 10/18/2019 | Bailard Inc. | 34,950 | $0.16M | 0.0% | +7.5% | 0.290% | |
| 9/11/2019 | River & Mercantile Asset Management LLP | 117,829 | $0.60M | 0.0% | N/A | 0.979% | |
| 8/30/2019 | Polar Asset Management Partners Inc. | 380,027 | $1.93M | 0.0% | -38.9% | 3.157% | |
| 8/15/2019 | River & Mercantile Asset Management LLP | 117,829 | $0.60M | 0.1% | N/A | 0.979% | |
| 8/14/2019 | Polar Asset Management Partners Inc. | 380,027 | $1.93M | 0.0% | -38.9% | 3.157% | |
| 8/13/2019 | BlackRock Inc. | 51,987 | $0.26M | 0.0% | +94.6% | 0.432% | |
| 8/12/2019 | Renaissance Technologies LLC | 337,680 | $1.72M | 0.0% | +22.7% | 2.806% | |
| 8/8/2019 | Acadian Asset Management LLC | 30,939 | $0.16M | 0.0% | +90.3% | 0.257% | |
| 8/2/2019 | Hillsdale Investment Management Inc. | 120,600 | $0.61M | 0.1% | +31.4% | 1.002% | |
| 7/31/2019 | Municipal Employees Retirement System of Michigan | 61,430 | $0.31M | 0.0% | N/A | 0.510% | |
| 6/30/2019 | Bailard Inc. | 32,500 | $0.17M | 0.0% | N/A | 0.270% | |
| 6/30/2019 | James Investment Research Inc. | 9,800 | $50K | 0.0% | +25.6% | 0.081% | |
| 6/16/2019 | Marshall Wace LLP | 9,230 | $59K | 0.0% | N/A | 0.077% | |
| 5/14/2019 | Punch & Associates Investment Management Inc. | 528,690 | $3.38M | 0.3% | +19.1% | 4.393% | |
| 4/26/2019 | James Investment Research Inc. | 7,800 | $50K | 0.0% | +160.0% | 0.065% | |
| 4/1/2019 | Deutsche Bank AG | 21,601 | $100K | 0.0% | -22.5% | 0.179% | |
| 2/15/2019 | Millennium Management LLC | 65,442 | $0.31M | 0.0% | -10.8% | 0.544% | |
| 2/8/2019 | Perritt Capital Management Inc. | 510,715 | $2.38M | 0.9% | +42.1% | 4.242% | |
| 2/7/2019 | Essex Investment Management Co. LLC | 60,589 | $0.28M | 0.0% | -6.9% | 0.503% | |
| 2/6/2019 | Essex Investment Management Co. LLC | 60,589 | $0.28M | 0.0% | -6.9% | 0.503% | |
| 12/13/2018 | Vanguard Group Inc | 80,500 | $0.46M | 0.0% | +9.2% | 0.676% | |
| 7/31/2018 | Commonwealth Equity Services LLC | 339,577 | $1.86M | 0.0% | -6.1% | 2.854% | |
| 5/23/2018 | Polar Asset Management Partners Inc. | 731,393 | $4.27M | 0.1% | +71.8% | 6.146% | |
| 5/16/2018 | Wynnefield Capital Inc. | 4,002,983 | $23.38M | 8.1% | -4.8% | 33.695% | |
| 5/11/2018 | Dimensional Fund Advisors LP | 41,093 | $0.24M | 0.0% | +38.7% | 0.346% | |
| 2/13/2018 | Renaissance Technologies LLC | 161,290 | $0.99M | 0.0% | +8.9% | 1.358% | |
| 11/13/2017 | Dimensional Fund Advisors LP | 18,697 | $0.12M | 0.0% | N/A | 0.161% | |
| 11/7/2017 | Commonwealth Equity Services Inc | 361,506 | $2.34M | 0.0% | N/A | 3.116% | |
| 10/30/2017 | Essex Investment Management Co. LLC | 71,887 | $0.47M | 0.1% | +149.2% | 0.620% | |
| 8/14/2017 | Punch & Associates Investment Management Inc. | 373,900 | $2.02M | 0.2% | No Change | 3.323% | |
| 8/10/2017 | Wells Fargo & Company MN | 22,000 | $0.12M | 0.0% | No Change | 0.196% | |
| 7/28/2017 | First Manhattan Co. | 18,911 | $0.10M | 0.0% | No Change | 0.168% | |
| 7/28/2017 | Essex Investment Management Co. LLC | 28,844 | $0.16M | 0.0% | +19.8% | 0.256% | |
| 7/12/2017 | Creative Planning | 35,626 | $0.19M | 0.0% | No Change | 0.317% | |
| 5/16/2017 | Wynnefield Capital Inc. | 4,676,120 | $25.25M | 8.8% | No Change | 41.562% | |
| 5/12/2017 | Renaissance Technologies LLC | 120,140 | $0.65M | 0.0% | +12.4% | 1.069% | |
| 9/30/2015 | Crow Point Partners | 0 | $0 | 0.0% | -100.0% | 0.000% | |
