Subsequent Event

6 Months Ended

Jun. 30, 2019

Subsequent Event

16. Subsequent Events

Public Offering of Common Stock

On July 19, 2019, the Company completed a public offering in which 1,587,000 shares of its common stock, including the underwriters’ exercise in full of an option to purchase an additional 207,000 shares, were sold to the public at a price of $87.00 per share (the “Stock Offering”). The net proceeds of the Stock Offering, after deducting underwriting discounts and commissions and other estimated offering expenses payable by the Company, were approximately $130.7 million.

Public Offering of Convertible Senior Notes

On July 19, 2019, the Company issued $287.5 million aggregate principal amount of 0.375% Convertible Senior Notes due 2024 (“2019 Notes”), which includes the underwriters’ exercise in full of an option to purchase an additional $37.5 million aggregate principal amount of 2019 Notes (the “Notes Offering” and, together with the Stock Offering, the “Offerings”). The net proceeds of the Notes Offering, after deducting underwriting discounts and commissions and other estimated offering expenses payable by the Company, were approximately $278.4 million.

The 2019 Notes will be senior, unsecured obligations of the Company, and will bear interest at a rate of 0.375% per year. Interest will be payable semi-annually in arrears on January 15 and July 15 of each year, beginning on January 15, 2020. The 2019 Notes will mature on July 15, 2024, unless earlier repurchased or converted. The initial conversion rate for the 2019 Notes is 8.6749 shares of the Company’s common stock per $1,000 principal amount of 2019 Notes (which is equivalent to an initial conversion price of approximately $115.28 per share). Prior to the close of business on the business day immediately preceding April 15, 2024, the 2019 Notes will be convertible at the option of the holders of 2019 Notes only upon the satisfaction of specified conditions and during certain periods. Thereafter until the close of business on the second scheduled trading day preceding the maturity date, the 2019 Notes will be convertible at the options of the holders of 2019 Notes at any time regardless of these conditions. Conversion of the 2019 Notes will be settled in cash, shares of the Company’s common stock or a combination thereof, at the Company’s election. The 2019 Notes are not redeemable by the Company prior to maturity.

Holders of 2019 Notes may require the Company to repurchase their 2019 Notes upon the occurrence of certain events that constitute a fundamental change under the indenture governing the 2019 Notes at a purchase price equal to 100% of the principal amount thereof, plus accrued and unpaid interest to, but excluding, the date of repurchase. In connection with certain corporate events, the Company will, under certain circumstances, increase the conversion rate for holders of 2019 Notes who elect to convert their 2019 Notes in connection with such corporate events.

Exchange and Redemption of 2016 Notes

Substantially concurrent with the closing of the Offerings, the Company used a portion of the net proceeds of the Offerings to exchange, with a limited number of holders in privately negotiated transactions, $92.0 million aggregate principal amount of its existing 2.125% Convertible Senior Notes due 2021 (the “2016 Notes”) for a combination of cash and shares of the Company’s common stock (the “Note Exchanges”). The Company paid $92.3 million in cash, which represents the principal amount exchanged and accrued and unpaid interest thereon and issued   1,850,155 shares of common stock, to settle the Note Exchanges. Contemporaneously with the closing of the Offerings, the Company issued a notice of redemption in respect of the remaining $23.0 million principal amount of 2016 Notes, which the Company expects would result in the conversion of all or substantially all of the remaining 2016 Notes in accordance with their terms prior to the end of our third fiscal quarter of 2019. The Company intends to settle conversions of the remaining 2016 Notes with cash in an amount equal to the principal amount thereof and shares of the Company’s common stock in excess thereof.