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Filing Details

Accession Number:: 0001104659-12-015909
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2012-03-06 15:29:06
Reporting Period:: 2012-03-02

Filing Date:: 2012-03-06
Accepted Time:: 2012-03-06 15:29:06
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1492426	Horizon Pharma Inc.	HZNP	Pharmaceutical Preparations (2834)	272179987

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1136148	Atlas Venture Fund Vi Lp	25 First Street, Suite 303 Cambridge MA 02141	No	No	Yes	No
1143182	Atlas Venture Entrepreneurs Fund Vi Lp	25 First Street, Suite 303 Cambridge MA 02141	No	No	Yes	No
1292358	Atlas Venture Fund Vi Gmbh & Co Kg	25 First Street, Suite 303 Cambridge MA 02141	No	No	Yes	No
1292359	Atlas Venture Associates Vi, L.p.	25 First Street, Suite 303 Cambridge MA 02141	No	No	Yes	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-03-02	828,443	$3.62	3,688,294	No	4	P	Indirect	See Footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See Footnote

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Warrants to Purchase Common Stock	Acquisiton	2012-03-02	207,110	$3.62	207,110	$4.31

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
207,110	2012-03-02	2017-03-02	No	4	P	Indirect

Footnotes

Includes 789,828 shares of common stock purchased by Atlas Venture Fund VI, L.P., 14,462 shares of common stock purchased by Atlas Venture Fund VI GmbH & Co. KG and 24,153 shares of common stock purchased by Atlas Venture Entrepreneurs' Fund VI, L.P. Atlas Venture Associates VI, L.P. is the general partner of Atlas Venture Fund VI, L.P. and Atlas Venture Entrepreneurs' Fund VI, L.P. and the managing limited partner of Atlas Venture Fund VI GmbH & Co. KG. Each of the Filing Persons disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.
Purchase price consists of the sum of (i) $3.59 (the closing bid price of the Issuer's common stock on 2/28/2012) and (ii) $0.03125.
Includes 3,516,377 shares of common stock held by Atlas Venture Fund VI, L.P., 64,385 shares of common stock held by Atlas Venture Fund VI GmbH & Co. KG and 107,532 shares of common stock held by Atlas Venture Entrepreneurs' Fund VI, L.P. Atlas Venture Associates VI, L.P. is the general partner of Atlas Venture Fund VI, L.P. and Atlas Venture Entrepreneurs' Fund VI, L.P. and the managing limited partner of Atlas Venture Fund VI GmbH & Co. KG. Each of the Filing Persons disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.
For each share of common stock of the Issuer purchased in the financing, a purchaser received a warrant to purchase 0.25 of a share of common stock of the Issuer. Includes warrants to purchase 197,456 shares of common stock purchased by Atlas Venture Fund VI, L.P., warrants to purchase 3,616 shares of common stock purchased by Atlas Venture Fund VI GmbH & Co. KG and warrants to purchase 6,038 shares of common stock purchased by Atlas Venture Entrepreneurs' Fund VI, L.P. Atlas Venture Associates VI, L.P. is the general partner of Atlas Venture Fund VI, L.P. and Atlas Venture Entrepreneurs' Fund VI, L.P. and the managing limited partner of Atlas Venture Fund VI GmbH & Co. KG. Each of the Filing Persons disclaims beneficial ownership of such shares except to the extent of its pecuniary interest therein.