Investor FAQs

Investor FAQs

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What exchange does Horizon Therapeutics trade on and what is the company's symbol?
Horizon Therapeutics plc trades on Nasdaq with the ticker symbol "HZNP."
When did Horizon Therapeutics become a publicly traded company?
Horizon Therapeutics plc (previously Horizon Pharma plc) became a publicly traded company on September 19, 2014, the date of the closing of Horizon Pharma, Inc.’s acquisition of Vidara Therapeutics International plc. Horizon Pharma, Inc. became a publicly traded company on July 27, 2011.
When did Horizon Pharma plc become Horizon Therapeutics plc and what was the reason for the change?
The name of the company was changed from Horizon Pharma plc to Horizon Therapeutics plc on May 3, 2019. Horizon Therapeutics plc more clearly reflects the Company as it is today, its long-term strategy and commitment to patient care – commercializing and developing innovative new medicines to address rare diseases with very few effective options.
Was the Vidara acquisition a taxable event to Horizon Pharma, Inc. shareholders?
Yes.
What is the CUSIP number for Horizon Therapeutics plc?
CUSIP NUMBER: G46188 101
What is the ISIN number for Horizon Therapeutics plc?
ISIN NUMBER: IE00BQPVQZ61
What is the adjusted cost basis (ACB) for Horizon Therapeutics plc?
The adjusted cost basis for Horizon Therapeutics plc is the September 18, 2014 closing price of Horizon Pharma, Inc. of USD $12.37.
When is Horizon Therapeutics’ fiscal year end?
Horizon’s fiscal year end is December 31.
Does Horizon Therapeutics offer a dividend reinvestment program (DRIP) or other direct means of purchasing its shares?
No, Horizon does not offer a dividend reinvestment program.
How do I replace my lost stock certificate or report a change of address?
Horizon’s transfer agent and registrar, Computershare, is responsible for maintaining all records of registered stockholders. They are available to resolve problems related to lost, destroyed or stolen certificates. Computershare can also facilitate changes of address or certificate holder information. If you are a Horizon stockholder, you own your shares directly (not through a broker) and need to change your records pertaining to the stock, please contact Computershare at the address and phone number below.

Computershare Investor Services
www.computershare.com

Ireland
+353 1 447 5566
3100 Lake Drive,
Citywest Business Campus,
Dublin 24, D24 AK82 Ireland

United States
+1 866 286-9155 (in the U.S.)
+1 732 491 0661 (outside the U.S.)
462 South 4th Street, Suite 1600
Louisville, KY 40202
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