| SC 13G | 2015-02-12 | RENAISSANCE TECHNOLOGIES LLC | USANA HEALTH SCIENCES INC | 797,883 | 6.5% | EDGAR |
| SC 13G/A | 2014-02-14 | FMR LLC | USANA HEALTH SCIENCES INC | 1,600,017 | 11.5% | EDGAR |
| SC 13G/A | 2013-04-10 | FMR LLC | USANA HEALTH SCIENCES INC | 2,070,111 | 15.3% | EDGAR |
| SC 13G/A | 2013-02-14 | FMR LLC | USANA HEALTH SCIENCES INC | 1,470,111 | 10.2% | EDGAR |
| SC 13G | 2013-02-13 | LSV ASSET MANAGEMENT | USANA HEALTH SCIENCES INC | 727,576 | 5.0% | EDGAR |
| SC 13G/A | 2012-02-14 | FMR LLC | USANA HEALTH SCIENCES INC | 1,142,611 | 7.6% | EDGAR |
| SC 13G/A | 2011-06-10 | FMR LLC | USANA HEALTH SCIENCES INC | 1,069,506 | 6.8% | EDGAR |
| SC 13G/A | 2011-02-14 | FMR LLC | USANA HEALTH SCIENCES INC | 2,362,132 | 14.8% | EDGAR |
| SC 13G/A | 2010-09-10 | FMR LLC | USANA HEALTH SCIENCES INC | 1,903,613 | 12.4% | EDGAR |
| SC 13G/A | 2010-02-16 | FMR LLC | USANA HEALTH SCIENCES INC | 886,961 | 5.8% | EDGAR |
| SC 13G/A | 2009-02-17 | FMR LLC | USANA HEALTH SCIENCES INC | 1,180,955 | 7.6% | EDGAR |
| SC 13G/A | 2009-02-13 | LORD ABBETT & CO LLC | USANA HEALTH SCIENCES INC | 0 | 0.0% | EDGAR |
| SC 13G/A | 2008-09-10 | FMR LLC | USANA HEALTH SCIENCES INC | 1,638,900 | 10.1% | EDGAR |
| SC 13D | 2008-05-23 | WENTZ MYRON W | USANA HEALTH SCIENCES INC | 8,302,452 | 50.6% | EDGAR |
| SC 13G/A | 2008-05-22 | SUSSMAN S DONALD | USANA HEALTH SCIENCES INC | 700,000 | 4.3% | EDGAR |
| SC 13D | 2008-05-20 | Paul & Jane Meyer Family Foundation | USANA HEALTH SCIENCES INC | 888,745 | 5.4% | EDGAR |
| SC 13G | 2008-05-06 | SUSSMAN S DONALD | USANA HEALTH SCIENCES INC | 900,000 | 5.5% | EDGAR |
| SC 13G/A | 2008-02-14 | LORD ABBETT & CO LLC | USANA HEALTH SCIENCES INC | 1,015,376 | 6.3% | EDGAR |
| SC 13G | 2008-02-14 | FMR LLC | USANA HEALTH SCIENCES INC | 1,248,498 | 7.7% | EDGAR |
| SC 13G | 2008-02-14 | Century Capital Management, LLC | USANA HEALTH SCIENCES INC | 737,470 | 4.5% | EDGAR |