As of March 31, 2021, the Company had three series of convertible senior notes outstanding. The issuances of such notes originally consisted of (i) $1 billion aggregate principal amount of 1.25% convertible senior notes due 2027 (the “2027 Notes”), issued on May 19, 2020 for net proceeds to the Company of $975.9 million after deducting offering costs of approximately $24.1 million, (ii) $287.5 million aggregate principal amount of 1.375% convertible senior notes due 2025 (the “2025 Notes”), issued on May 8, 2018 for net proceeds to the Company of $279.1 million after deducting offering costs of approximately $8.4 million, and (iii) $550.0 million aggregate principal amount of 0.875% convertible senior notes due 2025 that were issued by Livongo on June 4, 2020 for which the Company has agreed to guarantee Livongo’s obligations (the “Livongo Notes” and together with the 2027 Notes, the 2025 Notes and the 2022 Notes (as defined below), the “Notes”). On June 27, 2017, the Company issued, at par value, $275 million aggregate principal amount of 3% convertible senior notes due 2022 (the “2022 Notes”), which were redeemed during the quarter ended March 31, 2021 as described below.

All of the Notes are unsecured obligations of the Company and rank senior in right of payment to the Company’s indebtedness that is expressly subordinated in right of payment to such Notes; equal in right of payment to the Company’s liabilities that are not so subordinated; effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the assets securing such indebtedness; and structurally junior to all indebtedness and other liabilities incurred by the Company’s subsidiaries.

Holders may convert all or any portion of their Notes in integral multiples of $1,000 principal amount, at their option, at any time prior to the close of business on the business day immediately preceding the applicable conversion date only under the following circumstances:

●

during any quarter (and only during such quarter), if the last reported sale price of the shares of Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding quarter is greater than or equal to 130% of the conversion price for the applicable Notes on each applicable trading day;

●

during the five business day period after any ten consecutive trading day period (or five consecutive trading day period in the case of the Livongo Notes) in which the trading price was less than 98% of the product of the last reported sale price of Company’s common stock and the conversion rate for the applicable Notes on each such trading day;

●

upon the occurrence of specified corporate events described under the applicable indenture; or

●

if the Company calls the applicable Notes for redemption, at any time until the close of business on the second business day immediately preceding the redemption date.

On or after the applicable conversion date, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of such Notes, regardless of the foregoing circumstances.

The 2027 Notes and the 2025 Notes are convertible into shares of the Company’s common stock at the applicable conversion rate shown in the table above. The Livongo Notes are convertible at the applicable conversion rate shown in the table above into “units of reference property,” each of which is comprised of 0.5920 of a share of the Company’s common stock and $4.24 in cash, without interest. Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of the Company’s common stock (or units of reference property, in the case of the Livongo Notes) or a combination thereof, at the Company’s election. If the Company elects to satisfy the conversion obligation solely in cash or through payment and delivery, as the case may be, of a combination of cash and shares of the Company’s common stock or units of reference property, the amount of cash and shares of the Company’s common stock or units of reference property, if any, due upon conversion will be based on a daily conversion value calculated on a proportionate basis for each trading day in a 25 consecutive trading days observation period (or 40 days in the case of the Livongo Notes).

The Company may redeem for cash all or part of the Notes, at its option, on or after the applicable optional redemption date shown in the table above (and prior to the 41st scheduled trading day immediately preceding the maturity date in the case of the Livongo Notes) if the last reported sale price of its common stock exceeds 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading days ending on, and including, the trading day immediately preceding the date on which the Company provides notice of the redemption. The redemption price will be the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, if any. In addition, calling any 2027 Note or 2025 Note for redemption on or after the applicable optional redemption date will constitute a make-whole fundamental change with respect to that Note, in which case the conversion rate applicable to the conversion of that Note, if it is converted in connection with the redemption, will be increased in certain circumstances as described in the applicable indenture. If Livongo undergoes a fundamental change (as defined in the applicable indenture) at any time prior to the maturity date, holders will have the right, at their option, to require Livongo to repurchase for cash all or any portion of their Livongo Notes at a fundamental change repurchase price equal to 100% of the principal amount of the Livongo Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.

In accounting for the issuance of the 2027 Notes, 2025 Notes and the 2022 Notes, the Company separated the Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the applicable Notes as a whole. The excess of the principal amount of the liability component over its carrying amount, referred to as the debt discount, is amortized to interest expense from the issuance date to the applicable maturity date. The equity component is not re-measured as long as it continues to meet the conditions for equity classification. The equity component related to the 2027 Notes, 2025 Notes and 2022 Notes was $286 million,

$91.4 million and $62.4 million, respectively, net of issuance costs which were recorded in additional paid-in capital on the accompanying condensed consolidated balance sheet. The Company carries the liability component of the Livongo Notes at face value less unamortized debt discount on its condensed consolidated balance sheets and provides the fair value for disclosure purposes only. The Company has reserved an aggregate of 13.7 million shares of common stock for the Notes.

In accounting for the transaction costs related to the issuance of the 2027 Notes, 2025 Notes and 2022 Notes, the Company allocated the total costs incurred to the liability and equity components of the Notes based on their relative values. Transaction costs attributable to the liability component are being amortized to interest expense over the seven-year term of the Notes (or five-and-a-half year term in the case of the 2022 Notes), and transaction costs attributable to the equity component are netted with the equity components in stockholders’ equity.

The Notes consist of the following (in thousands):


	As of March 31,		As of December 31,
2027 Notes - Liability component	2021		2020
Principal	$	1,000,000	$	1,000,000
Less: Debt discount, net (1)		(278,857)		(287,916)
Net carrying amount	$	721,143	$	712,084

2025 Notes - Liability component
Principal	$	220,128	$	276,788
Less: Debt discount, net (1)		(49,672)		(65,923)
Net carrying amount	$	170,456	$	210,865

Livongo Notes - Liability component
Principal	$	550,000	$	550,000
Less: Debt discount, net (1)		(88,623)		(93,357)
Net carrying amount	$	461,377	$	456,643

2022 Notes - Liability component
Principal	$	—	$	46,762
Less: Debt discount, net (1)		—		(4,202)
Net carrying amount	$	—	$	42,560

(1)

Included in the accompanying consolidated balance sheet within convertible senior notes and amortized to interest expense over the expected life of the Notes using the effective interest rate method.

The Company estimates the fair value of its Notes utilizing market quotations for debt that have quoted prices in active markets. Since the Notes do not trade on a daily basis in an active market, the fair value estimates are based on market observable inputs based on borrowing rates currently available for debt with similar terms and average maturities.

The following table sets forth total interest expense recognized related to the Notes (and in the case of the Livongo Notes, subsequent to the acquisition of Livongo) (in thousands):


				Quarter Ended
				March 31,
2027 Notes:				2021
Contractual interest expense				$	3,125
Amortization of debt discount					9,059
Total				$	12,184
Effective interest rate of the liability component					3.4%

	Quarters Ended
	March 31,
2025 Notes:		2021		2020
Contractual interest expense	$	814		$	988
Amortization of debt discount		2,719			3,076
Total	$	3,533		$	4,064
Effective interest rate of the liability component		7.9	%		7.9	%

				Quarter Ended
				March 31,
Livongo Notes:				2021
Contractual interest expense				$	1,203
Amortization of debt discount					4,734
Total				$	5,937
Effective interest rate of the liability component					5.2%

	Quarters Ended
	March 31,
2022 Notes:		2021		2020
Contractual interest expense	$	104		$	2,062
Amortization of debt discount		316			3,761
Total	$	420		$	5,823
Effective interest rate of the liability component		9.6	%		10.0	%

Certain holders of the 2025 Notes converted their 2025 Notes in exchange for 1.1 million shares of the Company’s common stock during the quarter ended March 31, 2021. As a result the Company recorded a charge associated with the loss on extinguishment of debt of $8.1 million during the quarter ended March 31, 2021.

Redemption of Convertible Senior Notes Due 2022

In March 2021, the Company completed a redemption of all of the then outstanding 2022 Notes in exchange for approximately $0.1 million in cash (including accrued and unpaid interest). Prior to that redemption, certain holders of the 2022 Notes converted their 2022 Notes in exchange for 1.1 million shares of the Company’s common stock during the quarter ended March 31, 2021. As a result of the redemption and conversions, the Company recorded a charge associated with the loss on extinguishment of debt of $3.3 million during the quarter ended March 31, 2021.