Long-term debt, net

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Long-term debt, net

Long-term debt, net

The following table sets forth the Company’s long-term debt, net:

	December 31,
	2022		2021
0% Convertible Senior Notes (a)	$	565,509	$	562,216
Credit facility (b)	—		—
	$	565,509	$	562,216

a.Convertible Notes

On November 5, 2020, the Company issued $575,000 aggregate principal amount of 0% Convertible Senior Notes due 2025 (the “Notes”). The net proceeds from the offering were approximately $558,400.

The Notes are senior unsecured obligations of the Company. The Notes do not bear regular interest, and the principal amount of the Notes will not accrete. Special interest, if any, payable in accordance with the terms of the Notes will be payable in cash semi-annually in arrears on May 1 and November 1 of each year, beginning on May 1, 2021. The Notes mature on November 1, 2025, unless earlier repurchased, redeemed or converted.

The Notes are convertible into cash, the Company’s ordinary shares or a combination of cash and the Company’s ordinary shares at the Company’s election at an initial conversion rate of 5.9439 ordinary shares per $1,000 principal amount of the Notes, which is equivalent to an initial conversion price of approximately $168.24 per ordinary share.

In January 2021, the Company irrevocably elected to settle all conversions of Notes by a combination of cash and the Company's ordinary shares and that the cash portion per $1,000 principal amount of Notes for all conversion settlements shall be $1,000. Accordingly, from and after the date of the election, upon conversion of any Notes,

holders of Notes will receive, with respect to each $1,000 principal amount of Notes converted, cash in an amount up to $1,000 and the balance of the conversion value, if any, in ordinary shares (the "Conversion Shares").

The Notes are not redeemable prior to November 6, 2023, except in the event of certain tax law changes. The Company may redeem for cash all or any portion of the Notes, at the Company’s option, on or after November 6, 2023 if the last reported sale price of the Company’s ordinary shares has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid special interest, if any, to, but excluding, the redemption date. No sinking fund is provided for the Notes.

Prior to the close of business on the business day immediately preceding August 1, 2025, the Notes are convertible at the option of the holders only upon the satisfaction of certain conditions and during certain periods as described below and if the Company exercises its right to redeem the Notes as permitted or required by the Indenture as described below. On or after August 1, 2025 until the close of the business on the business day immediately preceding the maturity date, holders may convert all or any portion of their Notes at the conversion rate at any time irrespective of the foregoing conditions.

If holders of at least $3,000 aggregate principal amount of the Notes provide the Company with reasonable evidence that the trading price per $1,000 principal amount of Notes (the “Note Trading Price”) on any trading day would be less than 98% of the product of the last reported sale price of the Ordinary Shares on such trading day and the conversion rate on such trading day (the “Trigger Note Price”), the Company shall follow the process for obtaining the Note Trading Price as provided in the Indenture on a daily basis until the Note Trading Price exceeds the Trigger Notice Price. During this time, if during any five consecutive trading day period (the “Measurement Period”) the Note Trading Price is less than 98% of the Trigger Notice Price, the Company must notify the holders and the trustee of such an event and the holders may convert their Notes into Ordinary Shares at any time during the five business day period immediately after.

If the Company intends to (i) issue warrants/rights/options to existing shareholders with an exercise price less than the ten-day trailing last trading price average or (ii) distribute to shareholders assets, securities or rights with a value per share greater than 10% of the last reported trading price, then the Company must give holders of the Notes thirty-five (35) trading days’ notice of such event, at which time a holder may convert their Notes during such 35 trading day period (or until the Company revokes its decision to issue/distribute the securities, whichever comes sooner).

In addition, upon the occurrence of a fundamental change (as defined in the indenture), holders may require the Company to repurchase for cash all or any portion of their Notes at a fundamental change repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid special interest, if any, to, but excluding, the fundamental change repurchase date. In addition, following certain corporate events that occur prior to the maturity date or if the Company delivers a notice of redemption, the Company will, in certain circumstances, increase the conversion rate for a holder who elects to convert its Notes in connection with such a corporate event or notice of redemption, as the case may be.

As of December 31, 2022, the conditions allowing holders of the Notes to convert were not met. The Notes are therefore not convertible as of December 31, 2022 and are classified as long-term liability.

The net carrying amount of the liability and equity components of the Convertible Notes (see note 2(z) for additional information) as of December 31, 2022 and 2021 are as follows:

	December 31,
	2022		2021
Liability component, net:
Principal amount	$	575,000	$	575,000
Unamortized issuance costs	(9,491)		(12,784)
Net carrying amount of liability component (1)	$	565,509	$	562,216

(1)    An effective interest rate determines the fair value of the Notes, therefore they are categorized as Level 3 in accordance with ASC 820, "Fair Value Measurements and Disclosures." The estimated fair value of the Net

carrying amount of liability component of the Notes as of December 31, 2022 and 2021 were $455,091 and $467,469, respectively.

Finance expense related to the Notes were as follows:

	Year ended December 31,
	2022		2021		2020
Amortization of debt issuance costs	$	3,293	$	3,339	$	333
Amortization of debt discount	$	—	$	—	$	3,605
Total finance expense recognized	$	3,293	$	3,339	$	3,938

b. Loan and Security Agreement

On February 7, 2018, the Company and certain of its subsidiaries entered into a Loan and Security Agreement ("2018 Loan Agreement") with BioPharma Credit PLC pursuant to which such lender made a term loan to the Company in the principal amount of $150,000 (the "2018 Credit Facility"). The term loan, which was drawn in full upon execution of the 2018 Loan Agreement, bore interest at 9.0% per annum, payable quarterly in arrears.

On August 18, 2020, the Company terminated the 2018 Credit Facility. The prepayment included $150,000 in principal repayment and $3,000 in prepayment premium, plus accrued and unpaid interest and expenses payable through the payoff date. The un-amortized issuance costs in the amount of $478 that were fully amortized upon the repayment and the prepayment premium were reported in the Company’s finance expenses.