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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1509190	Aratana Therapeutics Inc.	PETX	Pharmaceutical Preparations (2834)	383826477

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1376355	Jay Lichter	C/O Avalon Ventures 1134 Kline Street La Jolla CA 92037		Yes	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	Disposition	2014-02-03	825,000	$19.00	3,345,543	No	4	S	Indirect	By Limited Partnership

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	By Limited Partnership

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	9,025	Indirect	By Limited Liability Company

Footnotes

Held by Avalon Ventures IX, L.P. ("Avalon Ventures LP"). The Reporting Person is a managing director of Avalon Ventures LP and shares voting and dispositive power over the shares held by Avalon Ventures LP. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein.
Held by Avalon Ventures IX Management, LLC ("Avalon Ventures LLC"). The Reporting Person is a manager of Avalon Ventures LLC and shares voting and dispositive power over the shares held by Avalon Ventures LLC. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein.