Horizon Pharma plc Underwriting Agreements

Underwriting Agreement, dated August 6, 2020, by and among Horizon Therapeutics Public Limited Company and the several underwriters named therein (Filed With SEC on August 10, 2020)

Underwriting Agreement, dated March 6, 2019, by and among Horizon Pharma Public Limited Company and the several underwriters named therein (Filed With SEC on March 7, 2019)

HORIZON PHARMA PUBLIC LIMITED COMPANY 15,350,000 ORDINARY SHARES, NOMINAL VALUE $0.0001 PER SHARE UNDERWRITING AGREEMENT (Filed With SEC on April 16, 2015)

HORIZON PHARMA PUBLIC LIMITED COMPANY ORDINARY SHARES, NOMINAL VALUE $0.0001 PER SHARE UNDERWRITING AGREEMENT (Filed With SEC on November 14, 2014)

21,425,000 Units Each Unit Consisting of One Share of Common Stock ($0.0001 par value per Share) And A Warrant to Purchase 0.50 of a Share of Common Stock HORIZON PHARMA, INC.... (Filed With SEC on September 20, 2012)

[ ] Shares HORIZON PHARMA, INC. Common Stock ($0.0001 par value per Share) UNDERWRITING AGREEMENT (Filed With SEC on July 11, 2011)

[ ] Shares HORIZON PHARMA, INC. Common Stock ($0.0001 par value per Share) UNDERWRITING AGREEMENT (Filed With SEC on June 7, 2011)