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Filing Details

Accession Number:: 0001181431-13-031712
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2013-05-30 19:35:32
Reporting Period:: 2013-05-28

Filing Date:: 2013-05-30
Accepted Time:: 2013-05-30 19:35:32
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1386858	Hyperion Therapeutics Inc	HPTX	Pharmaceutical Preparations (2834)	611512713

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1288452	Bay City Capital Llc	750 Battery Street Suite 400 San Francisco CA 94111	No	No	Yes	No
1401826	Bay City Capital Fund V, L.p.	C/O Bay City Capital Llc 750 Battery Street, Suite 400 San Francisco CA 94111	No	No	Yes	No
1409813	Bay City Capital Fund V Co-Investment Fund, L.p.	C/O Bay City Capital Llc 750 Battery Street, Suite 400 San Francisco CA 94111	No	No	Yes	No
1461543	Bay City Capital Management V Llc	C/O Bay City Capital Llc 750 Battery Street, Suite 400 San Francisco CA 94111	No	No	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2013-05-28	11,776	$21.08	2,266,256	No	4	S	Direct
Common Stock	Disposition	2013-05-28	224	$21.08	43,183	No	4	S	Direct
Common Stock	Disposition	2013-05-30	5,266	$21.00	2,260,990	No	4	S	Direct
Common Stock	Disposition	2013-05-30	100	$21.00	43,083	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Footnotes

Bay City Capital LLC, a Delaware limited liability company ("BCC"), Bay City Capital Management V LLC, a Delaware limited liability company ("Management V"), Bay City Capital Fund V, L.P., a Delaware limited partnership ("Fund V"), and Bay City Capital Fund V Co-Investment Fund, L.P., a Delaware limited partnership ("Co-Investment V") are deemed to be a "group" for the purposes of Section 13(d) under the Securities Exchange Act of 1934. Management V is the general partner of Fund V and Co-Investment V and has sole voting and dispositive power with respect to the securities held by Fund V and Co-Investment V. BCC, the manager of Management V, is also an advisor to Fund V and Co-Investment V and has sole voting and dispositive power with respect to the securities held by Fund V and Co-Investment V.
Represents securities held by Fund V, including indirect interests of BCC and Management V. BCC and Manangement V each disclaim beneficial ownership with respect to these securities, except to the extent of their pecuniary interest therein.
Represents securities held by Co-Investment V, including indirect interests of BCC and Management V. BCC and Manangement V each disclaim beneficial ownership with respect to these securities, except to the extent of their pecuniary interest therein.
This transaction was executed in multiple trades at prices ranging from $21.00 to $21.37. The price reported above reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.