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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1375151	Zogenix Inc.	ZGNX	Pharmaceutical Preparations (2834)	205300780

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1013425	I Jesse Treu	C/O Domain Associates, Llc One Palmer Square Princeton NJ 08542		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2011-09-16	3,441,304	$2.00	9,923,335	No	4	P	Indirect	By Domain Partners VII, L.P.
Common Stock	Acquisiton	2011-09-16	58,696	$2.00	169,251	No	4	P	Indirect	By DP VII Associates, L.P.

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By Domain Partners VII, L.P.
No	4	P	Indirect	By DP VII Associates, L.P.

Footnotes

The Reporting Person also indirectly beneficially owns 11,000 shares of Common Stock held by Domain Associates, LLC, 9,894 shares held by Domain Partners VI, L.P., and 106 shares held by DP VI Associates, L.P.
The Reporting Person is a Managing Member of (i) One Palmer Square Associates VII, LLC, which is the sole general partner of Domain Partners VII, L.P. and DP VII Associates, L.P., (ii) One Palmer Square Associates VI, LLC, which is the sole general partner of Domain Partners VI, L.P. and DP VI Associates, L.P., and (iii) Domain Associates, LLC. Pursuant to Instruction (4)(b)(iv) of Form 4, the Reporting Person has elected to report as indirectly beneficially owned the entire number of securities beneficially owned by each such entity. The Reporting Person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his or her pecuniary interest therein and/or that are not actually distributed to him or her.