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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	2010-11-29	2,064,781	$0.00	2,064,781	No	4	C	Indirect	By Domain Partners VII, L.P.
Common Stock	Acquisiton	2010-11-29	1,232,861	$0.00	3,297,642	No	4	C	Indirect	By Domain Partners VII, L.P.
Common Stock	Acquisiton	2010-11-29	873,800	$0.00	4,171,442	No	4	C	Indirect	By Domain Partners VII, L.P.
Common Stock	Acquisiton	2010-11-29	2,310,589	$4.00	6,482,031	No	4	P	Indirect	By Domain Partners VII, L.P.
Common Stock	Acquisiton	2010-11-29	35,215	$0.00	35,215	No	4	C	Indirect	By DP VII Associates, L.P.
Common Stock	Acquisiton	2010-11-29	21,027	$0.00	56,242	No	4	C	Indirect	By DP VII Associates, L.P.
Common Stock	Acquisiton	2010-11-29	14,903	$0.00	71,145	No	4	C	Indirect	By DP VII Associates, L.P.
Common Stock	Acquisiton	2010-11-29	39,410	$4.00	110,555	No	4	P	Indirect	By DP VII Associates, L.P.
Common Stock	Acquisiton	2010-11-29	9,894	$0.00	9,894	No	4	C	Indirect	By Domain Partners VI, L.P.
Common Stock	Acquisiton	2010-11-29	106	$0.00	106	No	4	C	Indirect	By DP VI Associates, L.P.

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Series A-1 Preferred Stock	Disposition	2010-11-29	2,064,781	$0.00	2,064,781	$0.00
Common Stock	Series B Preferred Stock	Disposition	2010-11-29	1,232,861	$0.00	1,232,861	$0.00
Common Stock	Convertible Promissory Notes	Disposition	2010-11-29	873,800	$0.00	873,800	$0.00
Common Stock	Series A-1 Preferred Stock	Disposition	2010-11-29	35,215	$0.00	35,215	$0.00
Common Stock	Series B Preferred Stock	Disposition	2010-11-29	21,027	$0.00	21,027	$0.00
Common Stock	Convertible Promissory Notes	Disposition	2010-11-29	14,903	$0.00	14,903	$0.00
Common Stock	Series A-1 Preferred Stock	Disposition	2010-11-29	9,894	$0.00	9,894	$0.00
Common Stock	Series A-1 Preferred Stock	Disposition	2010-11-29	106	$0.00	106	$0.00

Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect
No	4	C	Indirect

Footnotes

All outstanding shares of the Issuer's preferred stock were automatically converted into Common Stock upon the closing of the Issuer's initial public offering (the "IPO"), for no additional consideration.
All Convertible Promissory Notes, plus interest accrued thereon through the closing of the IPO, automatically converted into Common Stock upon the closing of the IPO, based on the IPO price of $4.00 per share.
The Reporting Person also indirectly beneficially owns 11,000 shares of Common Stock held by Domain Associates, LLC. 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.