| SC 13G/A | 2014-02-14 | Visium Asset Management, LP | ZOGENIX, INC. | 9,108,000 | 6.6% | EDGAR |
| SC 13G/A | 2014-02-12 | FEDERATED INVESTORS INC /PA/ | ZOGENIX, INC. | 35,782,213 | 24.9% | EDGAR |
| SC 13D/A | 2014-01-24 | Clarus Lifesciences I, L.P. | ZOGENIX, INC. | - | - | EDGAR |
| SC 13G | 2013-11-29 | Visium Asset Management, LP | ZOGENIX, INC. | 8,927,753 | 6.4% | EDGAR |
| SC 13G/A | 2013-02-14 | FMR LLC | ZOGENIX, INC. | 5,283,517 | 5.2% | EDGAR |
| SC 13G/A | 2013-02-14 | GREAT POINT PARTNERS LLC | ZOGENIX, INC. | 3,697,900 | 3.6% | EDGAR |
| SC 13G/A | 2013-02-12 | FEDERATED INVESTORS INC /PA/ | ZOGENIX, INC. | 31,032,213 | 28.2% | EDGAR |
| SC 13G | 2012-08-10 | FEDERATED INVESTORS INC /PA/ | ZOGENIX, INC. | 30,450,000 | 28.4% | EDGAR |
| SC 13G | 2012-08-03 | GREAT POINT PARTNERS LLC | ZOGENIX, INC. | 5,750,000 | 5.9% | EDGAR |
| SC 13G/A | 2012-02-14 | FMR LLC | ZOGENIX, INC. | 6,408,467 | 9.8% | EDGAR |
| SC 13G | 2012-02-10 | Chicago Growth Partners II L P | ZOGENIX, INC. | 2,962,327 | 4.2% | EDGAR |
| SC 13G/A | 2012-02-07 | Abingworth Management LTD | ZOGENIX, INC. | - | - | EDGAR |
| SC 13D/A | 2011-10-03 | DOMAIN PARTERS VII L P | ZOGENIX, INC. | 9,923,335 | 15.4% | EDGAR |
| SC 13D/A | 2011-09-30 | Scale Venture Partners II, LP | ZOGENIX, INC. | 5,336,504 | 8.3% | EDGAR |
| SC 13D | 2011-09-30 | Clarus Lifesciences I, L.P. | ZOGENIX, INC. | 9,482,439 | 14.7% | EDGAR |
| SC 13G | 2011-02-14 | FMR LLC | ZOGENIX, INC. | 3,134,000 | 9.2% | EDGAR |
| SC 13G | 2011-02-14 | Clarus Lifesciences I, L.P. | ZOGENIX, INC. | 5,982,439 | 17.6% | EDGAR |
| SC 13G | 2011-02-10 | Chicago Growth Partners II L P | ZOGENIX, INC. | 2,962,327 | 8.8% | EDGAR |
| SC 13G | 2011-02-09 | Abingworth Management LTD | ZOGENIX, INC. | 2,344,176 | 6.9% | EDGAR |
| SC 13D | 2010-12-09 | DOMAIN PARTERS VII L P | ZOGENIX, INC. | 6,482,031 | 19.3% | EDGAR |