| SC 13G | 2019-02-15 | UBS Group AG | Alphatec Holdings, Inc. | 2,965,156 | 6.9% | EDGAR |
| SC 13G | 2019-02-15 | UBS Group AG | Voyager Therapeutics, Inc. | 1,985,674 | 6.1% | EDGAR |
| SC 13G | 2019-02-15 | UBS Group AG | DHI GROUP, INC. | 5,089,504 | 9.6% | EDGAR |
| SC 13G | 2019-02-15 | UBS Group AG | MESA AIR GROUP INC | 2,220,359 | 9.3% | EDGAR |
| SC 13G | 2019-02-15 | UBS Group AG | ENCORE CAPITAL GROUP INC | 1,551,346 | 5.0% | EDGAR |
| SC 13G | 2019-02-15 | UBS Group AG | Paratek Pharmaceuticals, Inc. | 2,119,933 | 6.6% | EDGAR |
| SC 13G/A | 2019-02-14 | UBS Group AG | BlackRock Multi-Sector Income Trust | 2,768,190 | 7.4% | EDGAR |
| SC 13G | 2019-02-14 | UBS Group AG | VIVEVE MEDICAL, INC. | 2,333,650 | 5.2% | EDGAR |
| SC 13G | 2019-02-14 | UBS Group AG | ACHIEVE LIFE SCIENCES, INC. | 453,012 | 6.7% | EDGAR |
| SC 13G | 2019-02-14 | UBS Group AG | ALIMERA SCIENCES INC | 4,900,534 | 7.0% | EDGAR |
| SC 13G | 2019-02-14 | UBS Group AG | ANTARES PHARMA, INC. | 13,137,018 | 8.3% | EDGAR |
| SC 13G | 2019-02-08 | UBS Group AG | HOPFED BANCORP INC | 692,400 | 10.4% | EDGAR |
| SC 13G | 2019-01-23 | UBS Group AG | TENET HEALTHCARE CORP | 12,496,825 | 12.2% | EDGAR |
| SC 13G | 2019-01-11 | UBS Group AG | Nuverra Environmental Solutions, Inc. | 6,930,051 | 44.4% | EDGAR |
| SC 13G | 2019-01-11 | UBS Group AG | HAMILTON BANCORP INC | 342,236 | 10.0% | EDGAR |
| SC 13G | 2019-01-11 | UBS Group AG | Valeritas Holdings Inc. | 15,476,860 | 15.5% | EDGAR |
| SC 13G | 2019-01-11 | UBS Group AG | VICAL INC | 2,320,987 | 10.6% | EDGAR |
| SC 13G/A | 2019-01-10 | UBS Group AG | ALLIANCEBERNSTEIN NATIONAL MUNICIPAL INCOME FUND | 0 | 0.0% | EDGAR |
| SC 13G/A | 2018-10-10 | BlackRock Inc. | UBS Group AG | 190,226,720 | 4.9% | EDGAR |
| SC 13G | 2018-10-10 | UBS Group AG | Anchor Bancorp | 268,333 | 10.8% | EDGAR |