Document and Entity Information
Document and Entity Information - USD ($) | 12 Months Ended | ||
Dec. 31, 2023 | Feb. 15, 2024 | Jun. 30, 2023 | |
Cover [Abstract] | |||
Document Type | 10-K | ||
Amendment Flag | false | ||
Document Annual Report | true | ||
Document Period End Date | Dec. 31, 2023 | ||
Current Fiscal Year End Date | --12-31 | ||
Document Fiscal Year Focus | 2023 | ||
Document Fiscal Period Focus | FY | ||
Document Transition Report | false | ||
Entity File Number | 000-19125 | ||
Entity Registrant Name | Ionis Pharmaceuticals, Inc | ||
Entity Central Index Key | 0000874015 | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Tax Identification Number | 33-0336973 | ||
Entity Address, Address Line One | 2855 Gazelle Court | ||
Entity Address, City or Town | Carlsbad | ||
Entity Address, State or Province | CA | ||
Entity Address, Postal Zip Code | 92010 | ||
City Area Code | 760 | ||
Local Phone Number | 931-9200 | ||
Title of 12(b) Security | Common Stock, $.001 Par Value | ||
Trading Symbol | IONS | ||
Security Exchange Name | NASDAQ | ||
Entity Well-known Seasoned Issuer | Yes | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Large Accelerated Filer | ||
Entity Small Business | false | ||
Entity Emerging Growth Company | false | ||
ICFR Auditor Attestation Flag | true | ||
Document Financial Statement Error Correction [Flag] | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 4,243,321,410 | ||
Entity Common Stock, Shares Outstanding | 145,751,797 | ||
Auditor Firm ID | 42 | ||
Auditor Name | Ernst & Young LLP | ||
Auditor Location | San Diego, California |
CONSOLIDATED BALANCE SHEETS
CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Current assets: | ||
Cash and cash equivalents | $ 399,266 | $ 276,472 |
Short-term investments | 1,931,935 | 1,710,397 |
Contracts receivable | 97,778 | 25,538 |
Inventories | 28,425 | 22,033 |
Other current assets | 184,449 | 168,254 |
Total current assets | 2,641,853 | 2,202,694 |
Property, plant and equipment, net | 71,043 | 74,294 |
Right-of-use assets | 171,896 | 181,544 |
Deposits and other assets | 105,280 | 75,344 |
Total assets | 2,990,072 | 2,533,876 |
Current liabilities: | ||
Accounts payable | 26,027 | 17,921 |
Accrued compensation | 67,727 | 49,178 |
Accrued liabilities | 147,894 | 140,101 |
Income taxes payable | 2,151 | 6,249 |
0.125 percent convertible senior notes, net | 44,332 | 0 |
Current portion of deferred contract revenue | 151,128 | 90,577 |
Other current liabilities | 8,831 | 7,535 |
Total current liabilities | 448,090 | 311,561 |
Long-term deferred contract revenue | 241,184 | 287,768 |
Liability related to sale of future royalties, net | 513,736 | 0 |
Long-term lease liabilities | 170,875 | 178,941 |
Long-term obligations | 41,836 | 15,973 |
Total liabilities | 2,603,386 | 1,960,989 |
Stockholders' equity: | ||
Common stock, $0.001 par value; 300,000,000 shares authorized, 144,340,526 and 142,057,736 shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively | 144 | 142 |
Additional paid-in capital | 2,215,098 | 2,059,850 |
Accumulated other comprehensive loss | (32,645) | (57,480) |
Accumulated deficit | (1,795,911) | (1,429,625) |
Total stockholders' equity | 386,686 | 572,887 |
Total liabilities and stockholders' equity | 2,990,072 | 2,533,876 |
1.75 Percent Convertible Senior Notes [Member] | ||
Current liabilities: | ||
Convertible senior notes, net | 562,285 | 0 |
0 Percent Convertible Senior Notes [Member] | ||
Current liabilities: | ||
Convertible senior notes, net | 625,380 | 622,242 |
0.125 Percent Convertible Senior Notes [Member] | ||
Current liabilities: | ||
Convertible senior notes, net | $ 0 | $ 544,504 |
CONSOLIDATED BALANCE SHEETS (Pa
CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares | Dec. 31, 2023 | Dec. 31, 2022 |
Stockholders' equity: | ||
Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
Common stock, shares authorized (in shares) | 300,000,000 | 300,000,000 |
Common stock, shares issued (in shares) | 144,340,526 | 142,057,736 |
Common stock, shares outstanding (in shares) | 144,340,526 | 142,057,736 |
1.75 Percent Convertible Senior Notes [Member] | ||
LIABILITIES AND STOCKHOLDERS' EQUITY | ||
Interest rate on convertible senior notes | 1.75% | 1.75% |
0 Percent Convertible Senior Notes [Member] | ||
LIABILITIES AND STOCKHOLDERS' EQUITY | ||
Interest rate on convertible senior notes | 0% | 0% |
0.125 Percent Convertible Senior Notes [Member] | ||
LIABILITIES AND STOCKHOLDERS' EQUITY | ||
Interest rate on convertible senior notes | 0.125% | 0.125% |
CONSOLIDATED STATEMENTS OF OPER
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Revenue: | |||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 |
Expenses: | |||
Cost of sales | 9,133 | 14,116 | 10,842 |
Research, development and patent | 899,625 | 833,147 | 643,453 |
Selling, general and administrative | 232,619 | 150,295 | 186,347 |
Total operating expenses | 1,141,377 | 997,558 | 840,642 |
Loss from operations | (353,730) | (410,191) | (30,186) |
Other income (expense): | |||
Investment income | 89,041 | 25,331 | 10,044 |
Interest expense | (12,660) | (8,122) | (9,349) |
Interest expense related to sale of future royalties | (68,797) | 0 | 0 |
Gain (loss) on investments | (1,914) | (7,333) | 10,103 |
Gain (loss) on sale of real estate assets | (161) | 149,604 | 0 |
Other income (expense) | 14,256 | (7,274) | (9,760) |
Loss before income tax benefit (expense) | (333,965) | (257,985) | (29,148) |
Income tax benefit (expense) | (32,321) | (11,737) | 551 |
Net loss | $ (366,286) | $ (269,722) | $ (28,597) |
Basic net loss per share (in dollars per share) | $ (2.56) | $ (1.9) | $ (0.2) |
Shares used in computing basic net loss per share (in shares) | 143,190 | 141,848 | 141,021 |
Diluted net loss per share (in dollars per share) | $ (2.56) | $ (1.9) | $ (0.2) |
Shares used in computing diluted net loss per share (in shares) | 143,190 | 141,848 | 141,021 |
Commercial Revenue [Member] | |||
Revenue: | |||
Revenue | $ 308,591 | $ 303,358 | $ 342,395 |
SPINRAZA Royalties [Member] | |||
Revenue: | |||
Revenue | 240,379 | 242,314 | 267,776 |
Other Commercial Revenue [Member] | |||
Revenue: | |||
Revenue | 68,212 | 61,044 | 74,619 |
Research and Development Revenue [Member] | |||
Revenue: | |||
Revenue | 479,056 | 284,009 | 468,061 |
Collaborative Agreement Revenue [Member] | |||
Revenue: | |||
Revenue | 352,657 | 207,222 | 468,061 |
WAINUA Joint Development Revenue [Member] | |||
Revenue: | |||
Revenue | $ 126,399 | $ 76,787 | $ 0 |
CONSOLIDATED STATEMENTS OF COMP
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS [Abstract] | |||
Net loss | $ (366,286) | $ (269,722) | $ (28,597) |
Unrealized gains (losses) on investments, net of tax | 24,484 | (24,395) | (11,486) |
Currency translation adjustment | 351 | (417) | (111) |
Comprehensive loss | $ (341,451) | $ (294,534) | $ (40,194) |
CONSOLIDATED STATEMENTS OF STOC
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Common Stock [Member] | Additional Paid in Capital [Member] | Accumulated Other Comprehensive Loss [Member] | Accumulated Deficit [Member] | Total |
Balance at Dec. 31, 2020 | $ 140 | $ 1,895,519 | $ (21,071) | $ (1,131,306) | $ 743,282 |
Balance (in shares) at Dec. 31, 2020 | 140,366 | ||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||
Net loss | $ 0 | 0 | 0 | (28,597) | (28,597) |
Change in unrealized gains (losses), net of tax | 0 | 0 | (11,486) | 0 | (11,486) |
Foreign currency translation | 0 | 0 | (111) | 0 | (111) |
Issuance of common stock in connection with employee stock plans | $ 1 | 11,563 | 0 | 0 | 11,564 |
Issuance of common stock in connection with employee stock plans (in shares) | 1,132 | ||||
Issuance of warrants | $ 0 | 89,752 | 0 | 0 | 89,752 |
Purchase of note hedges | 0 | (136,620) | 0 | 0 | (136,620) |
Stock-based compensation expense | 0 | 120,678 | 0 | 0 | 120,678 |
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options | $ 0 | (16,725) | 0 | 0 | (16,725) |
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options (in shares) | (288) | ||||
Balance at Dec. 31, 2021 | $ 141 | 1,964,167 | (32,668) | (1,159,903) | 771,737 |
Balance (in shares) at Dec. 31, 2021 | 141,210 | ||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||
Net loss | $ 0 | 0 | 0 | (269,722) | (269,722) |
Change in unrealized gains (losses), net of tax | 0 | 0 | (24,395) | 0 | (24,395) |
Foreign currency translation | 0 | 0 | (417) | 0 | (417) |
Issuance of common stock in connection with employee stock plans | $ 1 | 6,372 | 0 | 0 | 6,373 |
Issuance of common stock in connection with employee stock plans (in shares) | 1,194 | ||||
Stock-based compensation expense | $ 0 | 100,264 | 0 | 0 | 100,264 |
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options | $ 0 | (10,953) | 0 | 0 | (10,953) |
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options (in shares) | (346) | ||||
Balance at Dec. 31, 2022 | $ 142 | 2,059,850 | (57,480) | (1,429,625) | 572,887 |
Balance (in shares) at Dec. 31, 2022 | 142,058 | ||||
Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||
Net loss | $ 0 | 0 | 0 | (366,286) | (366,286) |
Change in unrealized gains (losses), net of tax | 0 | 0 | 24,484 | 0 | 24,484 |
Foreign currency translation | 0 | 0 | 351 | 0 | 351 |
Issuance of common stock in connection with employee stock plans | $ 2 | 49,439 | 0 | 0 | 49,441 |
Issuance of common stock in connection with employee stock plans (in shares) | 2,283 | ||||
Stock-based compensation expense | $ 0 | 105,809 | 0 | 0 | 105,809 |
Balance at Dec. 31, 2023 | $ 144 | $ 2,215,098 | $ (32,645) | $ (1,795,911) | $ 386,686 |
Balance (in shares) at Dec. 31, 2023 | 144,341 |
CONSOLIDATED STATEMENTS OF CASH
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Operating activities: | |||
Net loss | $ (366,286) | $ (269,722) | $ (28,597) |
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: | |||
Depreciation | 10,292 | 14,328 | 15,487 |
Amortization of right-of-use operating lease assets | 9,647 | 5,362 | 1,721 |
Amortization of other assets | 2,559 | 2,415 | 2,352 |
Amortization of premium (discount) on investments, net | (28,885) | 7,389 | 17,776 |
Amortization of debt issuance costs | 6,330 | 5,373 | 4,958 |
Non-cash royalty revenue related to sale of royalties | (44,628) | 0 | 0 |
Non-cash interest related to sale of future royalties | 68,238 | 0 | 0 |
Stock-based compensation expense | 105,809 | 100,264 | 120,678 |
Loss (gain) on early retirement of debt | (13,389) | 0 | 8,627 |
Non-cash losses related to disposal of property, plant and equipment | 16,649 | 531 | 0 |
Loss (gain) on sale of real estate assets | 161 | (150,135) | 0 |
Loss (gain) on investments | 1,589 | 224 | (1,092) |
Non-cash losses related to other assets | 1,661 | 2,030 | 2,707 |
Changes in operating assets and liabilities: | |||
Contracts receivable | (72,059) | 36,358 | 14,308 |
Inventories | (6,392) | 2,773 | (2,841) |
Other current and long-term assets | (29,840) | (24,682) | (877) |
Accounts payable | 8,119 | 1,094 | (6,000) |
Income taxes | (4,098) | 6,213 | (280) |
Accrued compensation | 18,549 | 10,368 | (26,918) |
Accrued liabilities and other current liabilities | (5,506) | 46,695 | (8,381) |
Deferred contract revenue | 13,967 | (71,248) | (82,829) |
Net cash provided by (used in) operating activities | (307,513) | (274,370) | 30,799 |
Investing activities: | |||
Purchases of short-term investments | (1,770,814) | (1,485,772) | (1,124,193) |
Proceeds from sale of short-term investments | 1,584,676 | 989,152 | 1,344,185 |
Purchases of property, plant and equipment | (23,805) | (15,721) | (11,955) |
Proceeds from sale of real estate assets | 22 | 254,083 | 0 |
Acquisition of licenses and other assets, net | (4,206) | (4,378) | (5,946) |
Purchases of strategic investments | 0 | 0 | (7,185) |
Net cash provided by (used in) investing activities | (214,127) | (262,636) | 194,906 |
Financing activities: | |||
Proceeds from equity, net | 49,442 | 6,373 | 11,565 |
Payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options | 0 | (10,953) | (16,725) |
Proceeds from sale of future royalties | 500,000 | 0 | 0 |
Payments of transaction costs related to sale of future royalties | (10,434) | (29) | 0 |
Proceeds from real estate transaction | 32,352 | 0 | 0 |
Repayment of remaining principal amount of 1 percent convertible senior notes at maturity | 0 | 0 | (61,967) |
Proceeds from issuance of warrants | 0 | 0 | 89,752 |
Purchase of note hedges | 0 | 0 | (136,620) |
Principal payments on debt | (160) | (50,686) | 0 |
Net cash provided by (used in) financing activities | 644,082 | (55,295) | 245,933 |
Effects of exchange rates on cash | 352 | (418) | (111) |
Net increase (decrease) in cash and cash equivalents | 122,794 | (592,719) | 471,527 |
Cash and cash equivalents at beginning of year | 276,472 | 869,191 | 397,664 |
Cash and cash equivalents at end of year | 399,266 | 276,472 | 869,191 |
Supplemental disclosures of cash flow information: | |||
Interest paid | 6,512 | 2,898 | 4,778 |
Income taxes paid | 48,334 | 5,010 | 38 |
Supplemental disclosures of non-cash investing and financing activities: | |||
Right-of-use assets obtained in exchange for lease liabilities | 0 | 168,931 | 6,641 |
Amounts accrued for capital and patent expenditures | 172 | 4,767 | 705 |
1.75 Percent Convertible Senior Notes [Member] | |||
Financing activities: | |||
Proceeds from issuance of convertible senior notes | 575,000 | 0 | 0 |
Convertible senior notes issuance costs | (14,175) | 0 | 0 |
0.125 Percent Convertible Senior Notes [Member] | |||
Financing activities: | |||
Repurchase of convertible senior notes | (487,943) | 0 | 0 |
Repayment of remaining principal amount of 1 percent convertible senior notes at maturity | (504,400) | ||
0 Percent Convertible Senior Notes [Member] | |||
Financing activities: | |||
Proceeds from issuance of convertible senior notes | 0 | 0 | 632,500 |
Convertible senior notes issuance costs | 0 | 0 | (15,609) |
Proceeds from issuance of warrants | 89,800 | ||
Purchase of note hedges | (136,700) | ||
1 Percent Convertible Senior Notes [Member] | |||
Financing activities: | |||
Repurchase of convertible senior notes | $ 0 | $ 0 | (256,963) |
Repayment of remaining principal amount of 1 percent convertible senior notes at maturity | $ (309,900) |
CONSOLIDATED STATEMENTS OF CA_2
CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2019 |
1.75 Percent Convertible Senior Notes [Member] | |||||
Financing activities: | |||||
Interest rate on convertible senior notes | 1.75% | 1.75% | |||
0.125 Percent Convertible Senior Notes [Member] | |||||
Financing activities: | |||||
Interest rate on convertible senior notes | 0.125% | 0.125% | 0.125% | 0.125% | |
Principal amount repurchased | $ 504.4 | ||||
0 Percent Convertible Senior Notes [Member] | |||||
Financing activities: | |||||
Interest rate on convertible senior notes | 0% | 0% | 0% | 0% | |
1 Percent Convertible Senior Notes [Member] | |||||
Financing activities: | |||||
Interest rate on convertible senior notes | 1% | 1% | |||
Principal amount repurchased | $ 247.9 | $ 375.6 |
Organization and Significant Ac
Organization and Significant Accounting Policies | 12 Months Ended |
Dec. 31, 2023 | |
Organization and Basis of Presentation [Abstract] | |
Organization and Significant Accounting Policies | 1. Organization and Significant Accounting Policies Basis of Presentation In our consolidated financial statements we included the accounts of Ionis Pharmaceuticals, Inc. and the consolidated results of our wholly owned subsidiary, Akcea Therapeutics, Inc. and its wholly owned subsidiaries (“we”, “us” or “our”). Organization and Business Activity We incorporated in California on January 10, 1989. In conjunction with our IPO, we reorganized as a Delaware corporation in April 1991. We were organized principally to develop human therapeutic medicines using antisense technology. In December 2015, we changed our name from Isis Pharmaceuticals, Inc. to Ionis Pharmaceuticals, Inc. Use of Estimates We prepare our consolidated financial statements in conformity with accounting principles generally accepted in the United States, or U.S., that require us to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Actual results could differ from our estimates. Revenue Recognition We generally recognize revenue when we have satisfied all contractual obligations and are reasonably assured of collecting the resulting receivable. We are often entitled to bill our customers and receive payment from our customers in advance of recognizing the revenue. In the instances in which we have received payment from our customers in advance of recognizing revenue, we include the amounts within deferred revenue in our consolidated balance sheets. At contract inception, we analyze our collaboration arrangements to assess whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities and therefore within the scope of ASC Topic 808, Collaborative Arrangements ASC does not address the recognition and measurement of collaborative arrangements and instead refers companies to use other authoritative accounting literature. For collaboration arrangements within the scope of ASC that contain multiple elements, we determine which elements of the collaboration reflect a vendor-customer relationship and therefore are within the scope of ASC , Revenue from Contracts with Customers . When we determine elements of a collaboration do not reflect a vendor-customer relationship, we consistently apply the reasonable and rational policy election we made by analogizing to authoritative accounting literature We evaluate the income statement classification for presentation of amounts due from or owed to other participants associated with multiple activities in a collaboration arrangement based on the nature of each separate activity. For example, in our WAINUA collaboration with AstraZeneca, we recognize funding received from AstraZeneca for co-development activities as revenue; while we recognize cost sharing payments to and from AstraZeneca associated with co-commercialization activities and co-medical affairs activities as selling, general and administrative, or SG&A, expense and research and development, or R&D, expense, respectively. Steps to Recognize Revenue For elements of our contractual relationships that we account for under ASC 606, we use a five-step process to determine the amount of revenue we should recognize and when we should recognize it. The five-step process is as follows: 1. Identify the contract Accounting rules require us to first determine if we have a contract with our partner, including confirming that we have met each of the following criteria: ● We and our partner approved the contract and we are both committed to perform our obligations; ● We have identified our rights, our partner’s rights and the payment terms; ● We have concluded that the contract has commercial substance, meaning that the risk, timing, or amount of our future cash flows is expected to change as a result of the contract; and ● We believe collectability of the consideration is probable. 2. Identify the performance obligations We next identify our performance obligations, which represent the distinct goods and services we are required to provide under the contract. We may enter into a collaboration agreement in which we provide our partner with an option to license a medicine in the future. We may also provide our partner with an option to request that we provide additional goods or services in the future, such as active pharmaceutical ingredient, or API. We evaluate whether these options are material rights at the inception of the agreement. If we determine an option is a material right, we will consider the option a separate performance obligation. When a partner exercises its option to license a medicine that was not previously determined to be a material right at the inception of the agreement or requests additional goods or services, then we identify a new performance obligation for that item In some cases, we deliver a license at the start of an agreement. If we determine that our partner has full use of the license and we do not have any additional material performance obligations related to the license after delivery, then we consider the license to be a separate performance obligation. 3. Determine the transaction price We then determine the transaction price by reviewing the amount of consideration we are eligible to earn under the collaboration agreement, including any variable consideration. Under our collaboration agreements, consideration typically includes fixed consideration in the form of an upfront payment and variable consideration in the form of potential milestone payments, license fees and royalties. At the start of an agreement, our transaction price usually consists of only the upfront payment. We do not typically include any payments we may receive in the future in our initial transaction price because the payments are not probable and are contingent on certain future events. We reassess the total transaction price at each reporting period to determine if we should include additional payments in the transaction price. Milestone payments are our most common type of variable consideration. We recognize milestone payments using the most likely amount method because we will either receive the milestone payment or we will not, which makes the potential milestone payment a binary event. The most likely amount method requires us to determine the likelihood of earning the milestone payment. We include a milestone payment in the transaction price once it is probable that we will achieve the milestone event. Most often, we do not consider our milestone payments probable until we or our partner achieve the milestone event because the majority of our milestone payments are contingent upon events that are not within our control and/ or are usually based on scientific progress which is inherently uncertain. 4. Allocate the transaction price Next, we allocate the transaction price to each of our performance obligations. When we have to allocate the transaction price to more than performance obligation, we make estimates of the relative stand-alone selling price of each performance obligation because we do not typically sell our goods or services on a stand-alone basis. We then allocate the transaction price to each performance obligation based on the relative stand-alone selling price. We do not reallocate the transaction price after the start of an agreement to reflect subsequent changes in stand-alone selling prices. We may engage a party, independent valuation specialist to assist us with determining a stand-alone selling price for collaborations in which we deliver a license at the start of an agreement. We estimate the stand-alone selling price of these licenses using valuation methodologies, such as the relief from royalty method. Under this method, we estimate the amount of income, net of taxes, for the license. We then discount the projected income to present value. The significant inputs we use to determine the projected income of a license could include ● Estimated future product sales; ● Estimated royalties we may receive from future product sales; ● Estimated contractual milestone payments we may receive; ● Estimated expenses we may incur; ● Estimated income taxes; and ● A discount rate. We typically estimate the selling price of R&D services by using our internal estimates of the cost to perform the specific services. The significant inputs we use to determine the selling price of our R&D services include: ● The estimated number of internal hours we will spend performing these services; ● The estimated cost of work we will perform; ● The estimated cost of work that we will contract with third parties to perform; and ● The estimated cost of API we will use. For purposes of determining the stand-alone selling price of the R&D services we perform and the API we will deliver, accounting guidance requires us to include a markup for a reasonable profit margin. 5. Recognize revenue We recognize revenue in of ways, over time or at a point in time. We recognize revenue over time when we are executing on our performance obligation over time and our partner receives benefit over time. For example, we recognize revenue over time when we provide R&D services. We recognize revenue at a point in time when our partner receives full use of an item at a specific point in time. For example, we recognize revenue at a point in time when we deliver a license or API to a partner. For R&D services that we recognize over time, we measure our progress using an input method. The input methods we use are based on the effort we expend or costs we incur toward the satisfaction of our performance obligation. We estimate the amount of effort we expend, including the time we estimate it will take us to complete the activities, or costs we incur in a given period, relative to the estimated total effort or costs to satisfy the performance obligation. This results in a percentage that we multiply by the transaction price to determine the amount of revenue we recognize each period. This approach requires us to make numerous estimates and use significant judgement. If our estimates or judgements change over the course of the collaboration, they may affect the timing and amount of revenue that we recognize in the current and future periods. We recognize royalty revenue in the period in which the counterparty sells the related product and recognizes the related revenue, which in certain cases may require us to estimate our royalty revenue. Under our distribution agreements with Swedish Orphan Biovitrum AB, or Sobi, we concluded that our performance obligation is to provide services to Sobi over the term of the agreement, which includes supplying finished goods inventory to Sobi. We are also responsible for maintaining the marketing authorization for TEGSEDI and WAYLIVRA in major markets and for leading the global commercial strategy for each medicine. We view this performance obligation as a series of distinct activities that are substantially the same. Therefore, we recognize as revenue the price Sobi pays us for the inventory when we deliver the finished goods inventory to Sobi. We also recognize distribution fee revenue based on Sobi’s net sales of TEGSEDI and WAYLIVRA. Under our agreements with Sobi, Sobi does not generally have a right of return. Amendments to Agreements From time to time we amend our collaboration agreements. When this occurs, we are required to assess the following items to determine the accounting for the amendment: 1) If the additional goods and/or services are distinct from the other performance obligations in the original agreement; and 2) If the goods and/or services are sold at a stand-alone selling price. If we conclude the goods and/or services in the amendment are distinct from the performance obligations in the original agreement and at a stand-alone selling price, we account for the amendment as a separate agreement. If we conclude the goods and/or services are not distinct and are sold at a stand-alone selling price, we then assess whether the remaining goods or services are distinct from those already provided. If the goods and/or services are distinct from what we have already provided, then we allocate the remaining transaction price from the original agreement and the additional transaction price from the amendment to the remaining goods and/or services. If the goods and/or services are not distinct from what we have already provided, we update the transaction price for our single performance obligation and recognize any change in our estimated revenue as a cumulative-effect adjustment. Multiple agreements From time to time, we may enter into separate agreements at or near the same time with the same partner. We evaluate such agreements to determine whether we should account for them individually as distinct arrangements or whether the separate agreements should be combined and accounted for together. We evaluate the following to determine the accounting for the agreements: ● Whether the agreements were negotiated together with a single objective; ● Whether the amount of consideration in one contract depends on the price or performance of the other agreement; or ● Whether the goods and/or services promised under the agreements are a single performance obligation. Our evaluation involves significant judgment to determine whether a group of agreements might be so closely related that accounting guidance requires us to account for them as a combined arrangement. Refer to Note 4, Collaborative Arrangements and Licensing Agreements Contracts Receivable Our contracts receivable balance represents the amounts we have billed our partners or customers and that are due to us unconditionally for goods we have delivered or services we have performed. When we bill our partners or customers with payment terms based on the passage of time, we consider the contracts receivable to be unconditional. We typically receive payment within one quarter of billing our partner or customer As of December 31, 2023, approximately 87.8 percent of our contracts receivables were from one significant customer. As of December 31, 2022, approximately 82.5 percent of our contracts receivables were from one significant customer. Unbilled SPINRAZA Royalties Our unbilled SPINRAZA royalties represent our right to receive consideration from Biogen in advance of when we are eligible to bill Biogen for SPINRAZA royalties. We include these unbilled amounts in other current assets in our consolidated balance sheets. Deferred Revenue We are often entitled to bill our customers and receive payment from our customers in advance of our obligation to provide services or transfer goods to our partners. In these instances, we include the amounts in deferred revenue in our consolidated balance sheets. Cost of Sales Our cost of sales is comprised of costs related to our commercial revenue, including manufacturing costs, transportation and freight costs and indirect overhead costs associated with the manufacturing and distribution of our products. We also may include certain period costs related to manufacturing services and inventory adjustments in cost of sales. Research, Development and Patent Expenses Our research, development and patent expenses include wages, benefits, facilities, supplies, external services, clinical trial and manufacturing costs, patents and other expenses that are directly related to our R&D operations. We expense R&D costs as we incur them. When we make payments for R&D services prior to the services being rendered, we record those amounts as prepaid assets in our consolidated balance sheets and we expense them as the services are provided. A portion of the costs included in R&D expenses are costs associated with our partner agreements. In 2023, 2022 and 2021, patent expenses were $4.3 million, $4.7 million and $5.3 million, respectively. Income Taxes We account for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in our financial statements or tax returns. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carryforwards. We record a valuation allowance when necessary to reduce our net deferred tax assets to the amount expected to be realized. We apply the authoritative accounting guidance prescribing a threshold and measurement attribute for the financial recognition and measurement of a tax position taken or expected to be taken in a tax return. We recognize liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires us to estimate and measure the tax benefit as the largest amount that is more than 50 percent likely to be realized upon ultimate settlement. We are required to use significant judgment in evaluating our uncertain tax positions and determining our provision for income taxes. Although we believe our reserves are reasonable, we can provide no assurance that the final tax outcome of these matters will not be different from that which we have reflected in our historical income tax provisions and accruals. We adjust these reserves for changing facts and circumstances, such as the closing of a tax audit or the refinement of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences may impact the provision for income taxes in the period in which we make such determination. We are also required to use significant judgment in determining any valuation allowance recorded against our deferred tax assets. In assessing the need for a valuation allowance, we consider all available evidence, including scheduled reversal of deferred tax liabilities, past operating results, the feasibility of tax planning strategies and estimates of future taxable income. We base our estimates of future taxable income on assumptions that are consistent with our plans. The assumptions we use represent our best estimates and involve inherent uncertainties and the application of our judgment. Should actual amounts differ from our estimates, the amount of our tax expense and liabilities we recognize could be materially impacted. We record a valuation allowance to reduce the balance of our net deferred tax assets to the amount we believe is more-likely-than-not to be realized. Basic and Diluted Net Loss per Share Basic net loss per share We compute basic net loss per share by dividing our net loss by our weighted-average number of common shares outstanding during the period. Diluted net loss per share For the years ended December 31, 2023, 2022 and 2021, we incurred a net loss; therefore, we did not include dilutive common equivalent shares in the computation of diluted net loss per share because the effect would have been anti-dilutive. Common stock from the following would have had an anti-dilutive effect on net loss per share: ● 0 percent convertible senior notes, or Notes; ● Note hedges related to the Notes; ● 0.125 percent convertible senior notes, or Notes; ● Note hedges related to the Notes; ● Dilutive stock options; ● Unvested restricted stock units, or RSUs; ● Unvested performance restricted stock units, or PRSUs; and ● Employee Stock Purchase Plan, or ESPP. For the year ended December 31, 2023, common stock underlying the 1.75 percent convertible senior notes, or 1.75% Notes, would also have had an anti-dilutive effect on net loss per share. Additionally as of December 31, 2023, 2022 and 2021, we had warrants related to our 0% Notes and 0.125% Notes outstanding. We will include the shares issuable under these warrants in our calculation of diluted earnings per share when the average market price per share of our common stock for the reporting period exceeds the strike price of the warrants. Stock-Based Compensation Expense We measure stock-based compensation expense for equity-classified awards, principally related to stock options, RSUs, PRSUs and stock purchase rights under our ESPP based on the estimated fair value of the award on the date of grant. We recognize the value of the portion of the award that we ultimately expect to vest as stock-based compensation expense over the requisite service period in our consolidated statements of operations. We reduce stock-based compensation expense for estimated forfeitures at the time of grant and revise in subsequent periods if actual forfeitures differ from those estimates. We recognize compensation expense for stock options granted, RSUs, PRSUs and stock purchase rights under the ESPP using the accelerated multiple-option approach. Under the accelerated multiple-option approach (also known as the graded-vesting method), we recognize compensation expense over the requisite service period for each separately vesting tranche of the award as though the award were in substance multiple awards, which results in the expense being front-loaded over the vesting period. Stock Options and Stock Purchase Rights: We use the Black-Scholes model to estimate the fair value of stock options granted and stock purchase rights under our ESPP. On the grant date, we use our stock price and assumptions regarding a number of variables to determine the estimated fair value of stock-based payment awards. These variables include, but are not limited to, our expected stock price volatility over the term of the awards, and actual and projected employee stock option exercise behaviors. The expected term of stock options granted represents the period of time that we expect them to be outstanding. Historically, we estimated the expected term of options granted based on historical exercise patterns. In 2021, our Compensation Committee approved an amendment to the 2011 Equity Incentive Plan, or 2011 Plan, and the 2020 Equity Incentive Plan, or 2020 Plan, that increased the contractual term of stock options granted under these plans from seven years to ten years for stock options granted on January 1, 2022 and thereafter. We determined that we are unable to rely on our historical exercise data as a basis for estimating the expected life of stock options granted to employees following this change because the contractual term changed and we have no other means to reasonably estimate future exercise behavior. We therefore used the simplified method for determining the expected life of stock options granted to employees in the years ended December 31, 2023 and 2022. Under the simplified method, we calculate the expected term as the average of the time-to-vesting and the contractual life of the options. As we gain additional historical information, we will transition to calculating our expected term based on our historical exercise patterns. RSU’s: The fair value of RSUs is based on the market price of our common stock on the date of grant. The RSUs we have granted to employees vest annually over a four-year period. The RSUs we granted to our board of directors prior to June 2020 vest annually over a four-year period. RSUs we granted to our board of directors after June 2020 fully vest after one year. PRSU’s: Beginning in 2020, we added PRSU awards to the compensation for our Chief Executive Officer, Dr. Brett Monia. Beginning in 2022, we added PRSU awards to the compensation for our other Section 16 officers. Under the terms of the PRSUs we granted in 2020 through 2022, one third Under the terms of the PRSUs we granted in 2023, 100 percent of the PRSUs may vest at the end of the three-year performance period based on our relative TSR as compared to a peer group of companies and as measured at the end of the performance period. Under the terms of the grants, no number of PRSUs is guaranteed to vest and the actual number of PRSUs that will vest at the end of each performance period may be anywhere from zero to 200 percent of the target number depending on our relative TSR. We determined the fair value of the PRSUs using a Monte Carlo model because the performance target is based on our relative TSR, which represents a market condition. We are recognizing the grant date fair value of these awards as stock-based compensation expense using the accelerated multiple-option approach over the vesting period. Refer to Note 8, Stockholders’ Equity, Concentration of Credit Risk Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents, short-term investments and receivables. We place our cash equivalents and short-term investments with reputable financial institutions. We primarily invest our excess cash in commercial paper and debt instruments of the U.S. Treasury, financial institutions, corporations, and U.S. government agencies with strong credit ratings and an investment grade rating at or above A-1, P-1 or F-1 by Moody’s, Standard & Poor’s, or S&P, or Fitch, respectively. We have established guidelines relative to diversification and maturities that maintain safety and liquidity. We periodically review and modify these guidelines to maximize trends in yields and interest rates without compromising safety and liquidity. Fair Value Measurements We have estimated the fair value of our financial instruments. The amounts reported for cash, accounts receivable, accounts payable and accrued expenses approximate the fair value because of their short maturities. We report our investment securities at their estimated fair value based on quoted market prices for identical or similar instruments. We use a three-tier fair value hierarchy to prioritize the inputs used in our fair value measurements. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets for identical assets, which includes our money market funds and treasury securities classified as available-for-sale securities and our investment in equity securities in publicly traded biotechnology companies; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable, which includes our fixed income securities and commercial paper classified as available-for-sale securities; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring us to develop our own assumptions. We classify most of our securities as Level 2. We obtain the fair value of our Level 2 investments from our custodian bank or from a professional pricing service. We validate the fair value of our Level 2 investments by understanding the pricing model used by the custodian banks or professional pricing service provider and comparing that fair value to the fair value based on observable market prices. Cash, Cash Equivalents and Investments We consider all liquid investments with maturities of three months or less when we purchase them to be cash equivalents. Our short-term investments have initial maturities of greater than three months from date of purchase. We classify our short-term debt investments as “available-for-sale” and carry them at fair market value based upon prices on the last day of the fiscal period for identical or similar items. We record unrealized gains and losses on debt securities as a separate component of comprehensive income (loss) and include net realized gains and losses in gain (loss) on investments in our consolidated statements of operations. We use the specific identification method to determine the cost of securities sold. We also have equity investments of less than 20 percent ownership in public and private biotechnology companies that we received as part of a technology license or partner agreement. At December 31, 2023, we held equity investments in three publicly traded companies and seven privately held companies. We are required to measure and record our equity investments at fair value and to recognize the changes in fair value in our consolidated statements of operations. We account for our equity investments in publicly traded companies at their listed stock price. We account for our equity investments in privately held companies at their cost minus impairments, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Inventories We reflect our inventory in our consolidated balance sheets at the lower of cost or net realizable value under the first-in, first-out method, or FIFO. We capitalize the costs of raw materials that we purchase for use in producing our medicines because until we use these raw materials, they have alternative future uses, which we refer to as clinical raw materials. We include in inventory raw material costs for medicines that we manufacture for our partners under contractual terms and that we use primarily in our clinical development activities and drug products. We can use each of our raw materials in multiple products and, as a result, each raw material has future economic value independent of the development status of any single medicine. For example, if one of our medicines failed, we could use the raw materials for that medicine to manufacture our other medicines. We expense these costs as R&D expenses when we begin to manufacture API for a particular medicine if the medicine has not been approved for marketing by a regulatory agency. Our raw materials- commercial inventory includes API for our commercial medicines. We capitalize material, labor and overhead costs as part of our raw materials- commercial inventory. We review our inventory periodically and reduce the carrying value of items we consider to be slow moving or obsolete to their estimated net realizable value based on forecasted demand compared to quantities on hand. We consider several factors in estimating the net realizable value, including shelf life of our inventory, alternative uses for our medicines in development and historical write-offs. Property, Plant and Equipment We carry our property, plant and equipment at cost and depreciate it on the straight-line method over its estimated useful life, which we determine as the following (in years): Estimated Useful Lives Computer software, laboratory, manufacturing and other equipment 3 to 10 Building, building improvements and building systems 15 to 40 Land improvements 20 Leasehold improvements 5 to 15 Furniture and fixtures 5 to 10 We depreciate our leasehold improvements using the shorter of the estimated useful life or remaining lease term. We evaluate long-lived assets, which include property, plant and equipment, for impairment on at least a quarterly basis and whenever events or changes in circumstances indicate that we may not be able to recover the carrying amount of such assets. Accrued Liabilities We have numerous medicines in preclinical studies and/or clinical trials at clinical sites throughout the world. On at least a quarterly basis, we estimate our liability for preclinical and clinical development costs we have incurred and services that we have received but for which we have not yet been billed and maintain an accrual to cover these costs. These costs primarily relate to third-party clinical management costs, laboratory and analysis costs, toxicology studies and investigator grants. We estimate our liability using assumptions about study and patient activities and the related expected expenses for those activities determined based on the contracted fees with our service providers. The assumptions we use represent our best estimates of the activity and expenses at the time of our accrual and involve inherent uncertainties and the application of our judgment. Upon settlement, these costs may differ materially from the amounts accrued in our consolidated financial statements. Our historical accrual estimates have not been materially different from our actual amounts. Convertible Debt We account for each of our convertible debt instruments as a single unit of accounting, a liability, because we concluded that the conversion features do not require bifurcation as a derivative under ASC 815-15 and we did not issue our convertible debt instruments at a substantial premium. We record debt issuance costs as contra-liabilities in our consolidated balance sheets at i |
Supplemental Financial Data
Supplemental Financial Data | 12 Months Ended |
Dec. 31, 2023 | |
Supplemental Financial Data [Abstract] | |
Supplemental Financial Data | 2. Supplemental Financial Data Inventories Our inventory consisted of the following (in thousands): December 31, 2023 2022 Raw materials: Raw materials- clinical $ 20,985 $ 17,061 Raw materials- commercial 1,809 2,699 Total raw materials 22,794 19,760 Work in process 5,477 2,109 Finished goods 154 164 Total inventory $ 28,425 $ 22,033 Property, Plant and Equipment Our property, plant and equipment consisted of the following (in thousands): December 31, 2023 2022 Computer software, laboratory, manufacturing and other equipment $ 79,885 $ 74,351 Building, building improvements and building systems 41,228 41,158 Leasehold improvements 28,276 28,357 Furniture and fixtures 9,844 9,575 159,233 153,441 Less: Accumulated depreciation (96,759 ) (87,716 ) 62,474 65,725 Land 8,569 8,569 Total $ 71,043 $ 74,294 Accrued Liabilities Our accrued liabilities consisted of the following (in thousands): December 31, 2023 2022 Clinical expenses $ 105,967 $ 116,460 In-licensing expenses 7,454 7,945 Commercial expenses 4,875 3,498 Other miscellaneous expenses 29,598 12,198 Total accrued liabilities $ 147,894 $ 140,101 |
Revenues
Revenues | 12 Months Ended |
Dec. 31, 2023 | |
Revenues [Abstract] | |
Revenues | 3. Revenues During the years ended December 31, , and Year Ended December 31, 2023 2022 2021 Revenue: Commercial revenue: SPINRAZA royalties $ 240,379 $ 242,314 $ 267,776 Other commercial revenue: TEGSEDI and WAYLIVRA revenue, net 34,913 30,051 55,500 Licensing and other royalty revenue 33,299 30,993 19,119 Total other commercial revenue 68,212 61,044 74,619 Total commercial revenue 308,591 303,358 342,395 Research and development revenue: Collaborative agreement revenue 352,657 207,222 468,061 WAINUA joint development revenue 126,399 76,787 — Total research and development revenue 479,056 284,009 468,061 Total revenue $ 787,647 $ 587,367 $ 810,456 Revenue Sources The following are sources of revenue and when we typically recognize revenue. Commercial Revenue: SPINRAZA royalties and Licensing and other royalty revenue We earn commercial revenue primarily in the form of royalty payments on net sales of SPINRAZA. We earn royalty revenue on net sales of QALSODY which is included in Licensing and other royalty revenue. Commercial Revenue: TEGSEDI and WAYLIVRA revenue, net We earn commercial revenue from TEGSEDI and WAYLIVRA sales under our distribution agreements with . In addition, we receive royalties from Collaborative Arrangements and Licensing Agreements Research and development revenue under collaboration agreements We enter into collaboration agreements to license and sell our technology on an exclusive or non-exclusive basis. Our collaboration agreements typically contain multiple elements, or performance obligations, including technology licenses or options to obtain technology licenses, R&D services and manufacturing services. Upfront payments: When we enter into a collaboration agreement and receive an upfront payment, we typically record the entire upfront payment as deferred revenue if our only performance obligation is for R&D services we will provide in the future. We amortize the upfront payment into revenue as we perform the R&D services. Milestone payments: We include variable consideration in the transaction price when it is probable. We typically include milestone payments for R&D services in the transaction price when they are achieved. We include these milestone payments when they are achieved because typically there is considerable uncertainty in the research and development processes that trigger these payments. Similarly, we include approval milestone payments in the transaction price once the medicine is approved by the applicable regulatory agency. We will recognize sales-based milestone payments in the period in which we achieve the milestone under the sales-based royalty exception allowed under accounting rules. We recognize milestone payments that relate to an ongoing performance obligation over our period of performance. For example, when we achieve a milestone payment from a partner for advancing a clinical study under a collaboration agreement, we add the milestone payment to the transaction price if the milestone relates to an ongoing R&D services performance obligation and recognize revenue related to the milestone payment over our estimated period of performance. If we have partially completed our performance obligation, then we record a cumulative-effect adjustment in the period we add the milestone payment to the transaction price. Conversely, we recognize in full those milestone payments that we earn based on our partners’ activities when our partner achieves the milestone event and we do not have a performance obligation. License fees: We recognize as revenue the total amount we determine to be the relative stand-alone selling price of a license when we deliver the license to our partner who has full use of the license and we do not have any additional performance obligations related to the license after delivery. Sublicense fees: We recognize sublicense fee revenue in the period in which a party, who has already licensed our technology, further licenses the technology to another party because we do not have any performance obligations related to the sublicense. WAINUA (Eplontersen) Collaboration with AstraZeneca In December 2021, we entered into a joint development and commercialization agreement with AstraZeneca to develop and commercialize WAINUA for the treatment of transthyretin amyloidosis, or ATTR. We jointly developed and are preparing to commercialize WAINUA with AstraZeneca in the U.S. We initially granted AstraZeneca exclusive rights to commercialize WAINUA outside the U.S., except for certain Latin American countries. In July 2023, we expanded those rights to include Latin America. Under the terms of the agreement, we received a $200 million upfront payment in 2021. We evaluated our WAINUA collaboration under ASC 808 and identified four material components: (i) the license we granted to AstraZeneca in 2021, (ii) the co-development activities that we and AstraZeneca are performing, (iii) the co-commercialization activities that we and AstraZeneca are performing and (iv) the co-medical affairs activities that we and AstraZeneca are performing. We determined that we had a vendor-customer relationship within the scope of ASC 606 for the license we granted to AstraZeneca and as a result we had one performance obligation. For our sole performance obligation, we determined the transaction price was the $200 million upfront payment we received. We recognized the upfront payment in full in 2021 because we did not have any remaining performance obligations after we delivered the license to AstraZeneca. We also concluded that the co-development activities, the co-commercialization activities and the co-medical affairs activities are within the scope of ASC 808 because we and AstraZeneca are active participants exposed to the risks and benefits of the activities under the collaboration and therefore do not have a vendor-customer relationship. AstraZeneca is currently responsible for 55 percent of the costs associated with the ongoing global Phase 3 development program. Because we are leading the Phase 3 development program, we made an accounting policy election to recognize as non-customer revenue the cost-share funding from AstraZeneca, net of our share of AstraZeneca’s development expenses, in the same period we incur the related development expenses. As AstraZeneca is responsible for the majority of the commercial and medical affairs costs in the U.S. and all costs associated with bringing WAINUA to market outside the U.S., we made an accounting policy election to recognize cost-share funding we receive from AstraZeneca related to commercial and medical affairs activities as reductions of our SG&A expense and R&D expense, respectively. |
Collaborative Arrangements and
Collaborative Arrangements and Licensing Agreements | 12 Months Ended |
Dec. 31, 2023 | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Collaborative Arrangements and Licensing Agreements | 4. Collaborative Arrangements and Licensing Agreements Strategic Partnership Biogen We have several strategic collaborations with Biogen focused on using antisense technology to advance the treatment of neurological disorders. We developed and licensed to Biogen SPINRAZA, our approved medicine to treat people with spinal muscular atrophy, or SMA. Under our 2013 strategic neurology collaboration, Biogen developed QALSODY (tofersen), our medicine that received accelerated approval in the U.S. to treat patients with superoxide dismutase 1 amyotrophic lateral sclerosis, or SOD1-ALS. In addition, we and Biogen are currently developing numerous other investigational medicines to treat neurodegenerative diseases, including medicines in development to treat people with amyotrophic lateral sclerosis, or ALS, SMA, Angelman Syndrome, or AS, Alzheimer’s disease, or AD, and Parkinson’s disease, or PD. In addition to these medicines, our collaborations with Biogen include a substantial research pipeline that addresses a broad range of neurological diseases. From inception through December 31, 2023, we have received nearly $3.8 billion from our Biogen collaborations, including payments to purchase our stock. Spinal Muscular Atrophy Collaborations SPINRAZA In 2012, we entered into a collaboration agreement with Biogen to develop and commercialize SPINRAZA. From inception through , we earned more than $ billion in total revenue under our SPINRAZA collaboration, including more than $ billion in revenue from SPINRAZA royalties and more than $ million in R&D revenue. We are receiving tiered royalties ranging from to on net sales of SPINRAZA. We have exclusively in-licensed patents related to SPINRAZA from Cold Spring Harbor Laboratory and the University of Massachusetts. We pay Cold Spring Harbor Laboratory and the University of Massachusetts a low single digit royalty on net sales of SPINRAZA. Biogen is responsible for all global development, regulatory and commercialization activities and costs for SPINRAZA. We completed our performance obligations under our collaboration in 2016 In 2023, we entered into a royalty purchase agreement with Royalty Pharma in which Royalty Pharma receives 25 percent of our SPINRAZA royalty payments from 2023 through 2027, increasing to 45 percent of royalty payments in 2028, on up to $1.5 billion in annual sales. Royalty Pharma’s royalty interest in SPINRAZA will revert to us after total SPINRAZA royalty payments to Royalty Pharma reach either $475 million or $550 million, depending on the timing and occurrence of the U.S. Food and Drug Administration, or FDA, approval of pelacarsen, which Novartis is developing. Refer to Note 7, Long-Term Obligations and Commitments New Antisense Medicines for the Treatment of SMA In 2017, we entered into a collaboration agreement with Biogen to new antisense medicines for the treatment of SMA . Biogen has the option to license therapies arising out of this collaboration following the completion of preclinical studies. Upon licensing, Biogen will be responsible for global development, regulatory and commercialization activities and costs for such therapies . At the commencement of this collaboration, we received a upfront payment from Biogen. In 2021 , Biogen exercised its option to license ION 306 , a drug we discovered under this collaboration, for which we earned a $ million license fee payment. We recognized this payment as revenue in full because We will receive development and regulatory milestone payments from Biogen if new medicines, including ION 306 , advance towards marketing approval. Over the term of the collaboration, we are eligible to receive up to $555 million if Biogen advances ION306, which is comprised of up to $45 million in development milestone payments, up to $110 million in regulatory milestone payments and up to $400 million in sales milestone payments. In addition, we are eligible to receive tiered royalties from the mid-teens to on net sales from any product that Biogen successfully commercializes under this collaboration. for the initiation of a Phase 3 trial under this collaboration. Neurology Collaborations 2018 Strategic Neurology In 2018, we and Biogen entered into a strategic collaboration to develop novel antisense medicines for a broad range of neurological diseases. We also entered into a Stock Purchase Agreement, or SPA. As part of the collaboration, Biogen gained exclusive rights to the use of our antisense technology to develop therapies for these diseases for years. We are responsible for the identification of antisense drug candidates based on selected targets Biogen has the option to license the selected medicine If Biogen exercises its option to license a medicine, it will assume global development, regulatory and commercialization responsibilities and costs for that medicine. At the commencement of this collaboration, we received For each medicine under this collaboration, w e are eligible to receive up to $ million, which is comprised of a $ million license fee, up to $ million in development milestone payments and up to $ million in regulatory milestone payments. up to the on net sales from any product that Biogen successfully commercializes under this collaboration. W under this collaboration. We considered that the collaboration agreement and SPA were negotiated concurrently and in contemplation of one another. Based on these facts and circumstances, we concluded that we should evaluate the provisions of the agreements on a combined basis. W We determined our transaction price to be $ million, comprised of $ million from the upfront payment and $ million for the premium paid by Biogen for its purchase of our common stock. From inception through December 31, 2023, we have included $623 million in upfront and milestone payments in the transaction price for our R&D services performance obligation under this collaboration, including a $ million milestone payment we achieved in the fourth quarter of 2023. This milestone payment did not create a new performance obligation because it is part of our original R&D services performance obligation. Therefore, we included this amount in our transaction price for our R&D services performance obligation in the period we achieved the milestone payment. We are recognizing revenue for our R&D services performance obligation as we perform services based on our effort to satisfy our performance obligation relative to our total effort expected to satisfy our performance obligation. We currently estimate we will satisfy our performance obligation at the end of the contractual term in June 2028. 2013 Strategic Neurology In 2013, we and Biogen entered into a strategic relationship focused on applying antisense technology to advance the treatment of neurodegenerative diseases. As part of the collaboration, Biogen gained exclusive rights to the use of our antisense technology to develop therapies for neurological diseases and has the option to license medicines resulting from this collaboration. In most cases, we are responsible for drug discovery and early development of antisense medicines and Biogen has the option to license antisense medicines after Phase 2 proof-of-concept. In 2016, we expanded our collaboration to include additional research activities we will perform. If Biogen exercises its option to license a medicine, it will assume global development, regulatory and commercialization responsibilities and costs for that medicine. We are currently advancing four investigational medicines in development under this collaboration, including a a Under the terms of the agreement, we received an upfront payment of $100 million and are eligible to receive milestone payments, license fees and royalty payments for all medicines developed under this collaboration, with the specific amounts dependent upon the modality of the molecule advanced by Biogen. Over the term of the collaboration for QALSODY, we are eligible to receive nearly $110 million, which is comprised of a $35 million license fee we received when Biogen licensed QALSODY from us in 2018, $18 million in development milestone payments and up to $55 million in regulatory milestone payments. In addition, we are eligible to receive tiered royalties ranging from 11 percent to 15 percent on net sales of QALSODY. We will achieve the next milestone payment for QALSODY of $20 million if the European Medicines Agency, or EMA, approves Biogen’s Marketing Authorization Application, or MAA, filing of QALSODY. For each of the other antisense molecules that are chosen for drug discovery and development under this collaboration, we are eligible to receive up to approximately $260 million, which is comprised of a $70 million license fee, up to $60 million in development milestone payments and up to $130 million in regulatory milestone payments. In addition, we are eligible to receive tiered royalties up to the mid-teens on net sales from any product that Biogen successfully commercializes under this collaboration. From inception through December 31, 2023, we have received more than $325 million in payments under our 2013 strategic neurology collaboration. We will achieve the next payment of $70 million if Biogen licenses a medicine under this collaboration. At the commencement of our 2013 strategic neurology collaboration, we identified one performance obligation, which was to perform R&D services for Biogen. At inception, we determined the transaction price to be the $100 million upfront payment we received and allocated it to our single performance obligation. As we achieve milestone payments for our R&D services, we include these amounts in our transaction price for our R&D services performance obligation. We recognized revenue for our R&D services performance obligation based on our effort to satisfy our performance obligation relative to our total effort expected to satisfy our performance obligation . R&D services and recognized the remaining revenue related to this performance obligation. Under this collaboration, we have also generated additional payments that we concluded were not part of our R&D services performance obligation. We recognized each of these payments in full in the respective period we generated the payment because we did not have any performance obligations for the respective payment. For example, in 2023, we earned a million milestone payment from Biogen when the FDA approved Biogen’s New Drug Application, or NDA, for QALSODY, which we recognized in full because we did not have any remaining performance obligations related to this milestone payment. 2012 Neurology In 2012, we and Biogen entered into a collaboration agreement to develop and commercialize novel antisense medicines to treat neurodegenerative diseases. We are responsible for the development of each of the medicines through the completion of the initial Phase 2 clinical study for such medicine. Biogen has the option to license a medicine from each of the programs through the completion of the first Phase 2 study for each program. Under this collaboration, Biogen is conducting the IONIS-MAPT Rx Rx Rx Under the terms of the agreement, we received an upfront payment of $ million. For each program under this collaboration, we are eligible to receive up to $ million, which is comprised of a license fee of up to $ million, up to $ million in development milestone payments and up to $ million in regulatory milestone payments, plus a mark-up on the cost estimate of the Phase 1 and 2 studies. In addition, we are eligible to receive tiered royalties up to the mid-teens on net sales of any medicines resulting from each of the programs. From inception through , we have received more than $ million in payments under this collaboration, including $ million in milestone payments we received from Biogen for advancing ION582 during 2023 and a $ million milestone payment we received from Biogen when Biogen advanced Rx during 2022. We will achieve the next payment of $ When we commenced development for IONIS-MAPT Rx Rx Rx Rx During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with Biogen (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with Biogen $ 350,146 $ 366,696 $ 428,784 Percentage of total revenue 44 % 62 % 53 % Our , and included deferred revenue of $ million and $ million, respectively, related to our relationship with Biogen. Joint Development and Commercialization Arrangement AstraZeneca WAINUA (Eplontersen) Collaboration In 2021, we entered into a joint development and commercialization agreement with AstraZeneca to develop and commercialize eplontersen for the treatment of ATTR. In December 2023, the FDA approved eplontersen with the brand name, WAINUA, in the U.S. for ATTRv-PN. We are jointly developing and commercializing WAINUA with AstraZeneca in the U.S. We initially granted AstraZeneca exclusive rights to commercialize WAINUA outside the U.S., except for certain Latin American countries. In July 2023, we expanded those rights to include Latin America. Over the term of the collaboration, we are eligible to receive up to $ billion, which is comprised of a $ million upfront payment, a $ million license fee, up to $ million in development and approval milestone payments and up to $ billion in sales milestone payments. The agreement includes territory-specific development, commercial and medical affairs cost-sharing provisions. In addition, we are eligible to receive up to mid- royalties for sales in the U.S. and tiered royalties ranging from mid to high teens for sales outside the U.S. From inception through , we have received nearly $ million in payments under this collaboration. We will achieve the next payment of $ million upon regulatory approval of WAINUA for ATTRv-PN in the EU under this collaboration. We evaluated our WAINUA collaboration under ASC 808 and identified four material components: (i) the license we granted to AstraZeneca in 2021, (ii) the co-development activities that we and AstraZeneca will perform, (iii) the co-commercialization activities that we and AstraZeneca will perform and (iv) the co-medical affairs activities that we and AstraZeneca will perform. We determined that we had a vendor-customer relationship within the scope of ASC 606 for the license we granted to AstraZeneca and as a result we had one performance obligation. For our sole performance obligation, we determined the transaction price was the $200 million upfront payment we received in 2021. In 2023, we earned a $20 million license fee payment when we licensed rights to Latin America for WAINUA to AstraZeneca. We recognized these payments in full because we did not have any remaining performance obligations after we delivered the licenses to AstraZeneca. We also concluded that the co-development activities, the co-commercialization activities and the co-medical affairs activities are within the scope of ASC 808 because we and AstraZeneca are active participants exposed to the risks and benefits of the activities under the collaboration. AstraZeneca is currently responsible for 55 percent of the costs associated with the ongoing global Phase 3 development program. Because we are leading the Phase 3 development program, we recognize as revenue the 55 percent of cost-share funding AstraZeneca is responsible for in the same period we incur the related development expenses. As AstraZeneca is responsible for the majority of the commercial and medical affairs costs in the U.S. and all costs associated with bringing WAINUA to market outside the U.S., we recognize cost-share funding we receive from AstraZeneca related to these activities as a reduction of our commercial and medical affairs expenses. In 2023, we earned a $50 million milestone payment when the FDA approved WAINUA for ATTRv-PN in the U.S. We recognized this milestone payment in full as joint development revenue because we did not have any remaining performance obligations related to the milestone payment. Research and Development Partners AstraZeneca In addition to our collaboration for WAINUA, we have a collaboration with AstraZeneca focused on discovering and developing treatments for cardiovascular, renal and metabolic diseases, which we formed in 2015. Under our collaboration, AstraZeneca has licensed multiple medicines from us. AstraZeneca is responsible for global development, regulatory and commercialization activities and costs for each of the medicines it has licensed from us. Over the term of the collaboration, we are eligible to receive up to $3.4 billion, which is comprised of a $65 million upfront payment, up to $290 million in license fees, up to $865 million in development milestone payments and up to $2.2 billion in regulatory milestone payments. In addition, we are eligible to receive tiered royalties up to the low teens on net sales from any product that AstraZeneca successfully commercializes under this collaboration agreement. From inception through December 31, 2023, we have received more than $300 million in payments under this collaboration. We will achieve the next payment of $10 million if AstraZeneca advances a medicine under this collaboration . At the commencement of this collaboration, we identified one performance obligation, which was to perform R&D services for AstraZeneca. We determined the transaction price to be the $65 million upfront payment we received and we allocated it to our single performance obligation. We recognized revenue for our R&D services performance obligation as we performed services based on our effort to satisfy this performance obligation relative to our total effort expected to satisfy our performance obligation. We completed our performance obligation in Under this collaboration, we have also generated additional payments that we concluded were not part of our R&D services performance obligation. We recognized each of these payments in full in the respective period we generated the payment because the payments were distinct and we did not have any performance obligations for the respective payment. For example, in 2023, we earned a $36 million payment when AstraZeneca licensed ION826 from us. We recognized this payment in full in 2023 because we did not have any remaining performance obligations after we delivered the license to AstraZeneca. During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with AstraZeneca (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with AstraZeneca $ 202,236 $ 79,160 $ 254,591 Percentage of total revenue 26 % 13 % 31 % We did not have any deferred revenue from our relationship with AstraZeneca at December 31, 2023 and 2022. GSK In 2010, we entered into a collaboration with GSK using our antisense drug discovery platform to discover and develop new medicines against targets for serious and rare diseases, including infectious diseases. Upon initiating the collaboration, we received an upfront payment of $35 million. Under our collaboration, GSK is developing bepirovirsen for the treatment of chronic hepatitis B virus infection, or HBV, infection. In 2019, following positive Phase 2 results, GSK licensed our HBV program. GSK is responsible for all global development, regulatory and commercialization activities and costs for the HBV program. Over the term of the collaboration, we are eligible to receive nearly $260 million, which is comprised of a $25 million license fee, up to $42.5 million in development milestone payments, up to $120 million in regulatory milestone payments and up to $70 million in sales milestone payments if GSK successfully develops and commercializes bepirovirsen. In addition, we are eligible to receive tiered royalties up to the low-teens on net sales of bepirovirsen. From inception through December 31, 2023, we have received more than $105 million in an upfront payment and payments related to the HBV program. We completed our R&D services performance obligations in 2015, therefore we do not have any remaining performance obligations under our collaboration with GSK. However, we can still earn additional payments and royalties as GSK advances the HBV program. In 2023, we earned a $ million milestone payment when GSK initiated a Phase 3 program of bepirovirsen. We recognized this milestone payment as R&D revenue in full in 2023 because we did not have any remaining performance obligations related to the milestone payment. We will achieve the next payment of $ million if the FDA accepts an NDA filing of bepirovirsen for review. During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with GSK (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with GSK $ 15,000 $ — $ — Percentage of total revenue 2 % 0 % 0 % We did not have any deferred revenue from our relationship with GSK at December 31, 2023 and 2022. Novartis Pelacarsen Collaboration In 2017, we initiated a collaboration with Novartis to develop and commercialize pelacarsen. Over the term of the collaboration, we are eligible to receive up to $900 million, which is comprised of a $75 million upfront payment, a $150 million license fee, a $25 million development milestone payment, up to $290 million in regulatory milestone payments and up to $360 million in sales milestone payments. We are also eligible to receive tiered royalties in the mid-teens to low 20 percent range on net sales of pelacarsen. From inception through , we have received more than $ million in payments under this collaboration. We will achieve the next payment of $ million if the FDA accepts an NDA filing for pelacarsen. In conjunction with this collaboration, we entered into a SPA with Novartis. As part of the SPA, Novartis purchased 1.6 million shares of our common stock for $100 million in 2017. At the commencement of this collaboration, we identified four separate performance obligations: ● R&D services for pelacarsen; ● R&D services for olezarsen; ● API for pelacarsen; and ● API for olezarsen. We determined that the R&D services for each medicine and the API for each medicine were distinct performance obligations. We determined our transaction price to be $108.4 million, comprised of the following: ● $75 million from the upfront payment; ● $28.4 million for the premium paid by Novartis for its purchase of our common stock at a premium in 2017; and ● $5.0 million for the potential premium Novartis would have paid if they purchased our common stock in the future. We allocated the transaction price based on the estimated stand-alone selling price of each performance obligation as follows: ● $ million for the R&D services for pelacarsen; ● $40.1 million for the R&D services for olezarsen ● $1.5 ● $2.8 We completed our R&D services performance obligations for olezarsen and pelacarsen We recognized revenue related to the R&D services for pelacarsen and olezarsen performance obligations as we performed services . As described in the Biogen SPINRAZA Long-Term Obligations and Commitments New Medicine for the Treatment of Lp(a)-Driven Cardiovascular Disease In August 2023, we entered into a collaboration and license agreement with Novartis for the discovery, development and commercialization of a novel medicine for patients with Lp(a)-driven cardiovascular disease, or CVD. Novartis is solely responsible for the development, manufacturing and potential commercialization of the next generation Lp(a) therapy. Over the term of the collaboration, we are eligible to receive up to $730 million, which is comprised of a $60 million upfront payment, up to $155 million in development milestone payments, up to $105 million in regulatory milestone payments and up to $410 million in sales milestone payments. In addition, we are eligible to receive tiered royalties ranging from 10 percent to 20 percent on net sales. From inception through December 31, 2023, we have received $60 million from the upfront payment we received under this collaboration. We will achieve the next payment of $5 million if we designate a development candidate under this collaboration. At the commencement of this collaboration, we identified one performance obligation, which was to perform R&D services for Novartis. We determined the transaction price to be the $60 million upfront payment we received in the fourth quarter 2023. We allocated the transaction price to our single performance obligation. We are recognizing revenue for our R&D services performance obligation as we perform services based on our effort to satisfy our performance obligation relative to our total effort expected to satisfy our performance obligation. We currently estimate we will satisfy our performance obligation at the end of the research term in June 2024. During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with Novartis (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with Novartis $ 30,194 $ 237 $ 25,526 Percentage of total revenue 4 % Less than 1% 3 % Our consolidated balance sheet at December 31, 2023 included deferred revenue of $30.0 million related to our relationship with Novartis. We did not have any deferred revenue from our relationship with Novartis at December 31, 2022. Roche Huntington’s Disease In 2013, we entered into an agreement with Hoffmann-La Roche Inc and F. Hoffmann-La Roche Ltd, collectively Roche, to develop treatments for HD based on our antisense technology. Under the agreement, we discovered and developed tominersen, an investigational medicine targeting HTT protein. We developed tominersen through completion of our Phase 1/2 clinical study in people with early-stage HD. In 2017, upon completion of the Phase 1/2 study, Roche exercised its option to license tominersen. As a result, Roche is responsible for all global development, regulatory and commercialization activities and costs for tominersen. Over the term of the collaboration, we are eligible to receive up to $395 million, which is comprised of a $30 million upfront payment, a $45 million license fee, up to $70 million in development milestone payments, up to $170 million in regulatory milestone payments and up to $80 million in sales milestone payments as tominersen advances. In addition, we are eligible to receive up to $136.5 million in milestone payments for each additional medicine successfully developed. We are also eligible to receive tiered royalties up to the mid-teens on net sales of any product resulting from this collaboration. From inception through December 31, 2023, we have received more than $150 million in payments under this collaboration. We will achieve the next payment of $17.5 million if Roche advances a medicine under this collaboration. At the commencement of this collaboration, we identified one performance obligation, which was to perform R&D services for Roche. We determined the transaction price to be the $30 million upfront payment we received and allocated it to our single performance obligation. As we achieved milestone payments for our R&D services, we included these amounts in our transaction price for our R&D services performance obligation. We recognized revenue for our R&D services performance obligation over our period of performance, which ended in 2017. Under this collaboration, we have also generated additional payments that we concluded were not part of our R&D services performance obligation. We recognized each of these payments in full in the respective period in which we generated the payment because the payments were distinct and we did not have any performance obligations for the respective payment. In 2021, Roche decided to discontinue dosing in the Phase 3 GENERATION HD1 study of tominersen in patients with manifest HD based on the results of a pre-planned review of data from the Phase 3 study conducted by an unblinded independent data monitoring committee, or iDMC. In January 2023, Roche initiated the Phase 2, GENERATION HD2, study of tominersen in patients with prodromal or early manifest HD. Roche is focusing on early-stage and younger patients based on the post-hoc analyses from the GENERATION HD1 study that suggested tominersen may benefit these patient groups. We do not have any remaining performance obligations related to tominersen under this collaboration with Roche; however, we can still earn additional payments and royalties as Roche advances tominersen. IONIS-FB-L Rx for Complement-Mediated Diseases In 2018, we entered into a collaboration agreement with Roche to develop IONIS-FB-L Rx IONIS-FB-L Rx Rx After positive data from a Phase 2 clinical study in patients with IgAN, licensed IONIS-FB-L Rx in 2022 for $ million. As a result, Roche is responsible for global development, regulatory and commercialization activities, and costs for IONIS-FB-L Rx , except for the open label Phase 2 study in patients with IgAN and the Phase 2 study in patients with GA, both of which we are conducting and funding. In 2022, we amended our IONIS-FB-L Rx collaboration agreement with Roche. The amendment changed future potential milestone payments we could receive under the collaboration. We determined there were no changes that would require adjustments to revenue we previously recognized. Over the term of the collaboration, we are eligible to receive more than $ million, which is comprised of a $ million upfront payment, a $ million license fee, up to $ million in development milestone payments, up to $ million in regulatory milestone payments and up to $ million in sales milestone payments. In addition, we are also eligible to receive tiered royalties from the high teens to on net sales. We will achieve the next payment of up to $ million if Roche advances IONIS-FB-L Rx under this collaboration. At the commencement of this collaboration, we identified one performance obligation, which was to perform R&D services for Roche. From inception through December 31, 2023, we have included $97 million in upfront and milestone payments in the transaction price for our R&D services performance obligation under this collaboration, including $22 million of milestone payments we achieved in 2022. We are recognizing revenue for our R&D services performance obligation as we perform services based on our effort to satisfy our performance obligation relative to our total effort expected to satisfy our performance obligation. currently estimate we will satisfy our performance obligation in RNA-Targeting Medicines for Alzheimer's Disease and Huntington's Disease In September 2023, we entered into an agreement with Roche to develop two undisclosed early-stage programs for RNA-targeting investigational medicines for the treatment of AD and HD. Under the agreement, we are responsible for advancing the two programs through preclinical studies and Roche is responsible for clinical development, manufacturing and commercialization of the medicines if they receive regulatory approval. Over the term of the collaboration, we are eligible to receive up to $625 million, which is comprised of a $60 million upfront payment, up to $167 million in development milestone payments and up to $398 million in sales milestone payments. In addition, we are eligible to receive tiered royalties up to the mid-teens on net sales. From inception through December 31, 2023, we have received $60 million from the upfront payment we received under this collaboration. We will achieve the next payment of $7.5 million if we advance a medicine under this collaboration. We identified two performance obligations under this new agreement, comprised of R&D services for each of the two separate programs. We determined the transaction price to be the $60 million upfront payment we received in the fourth quarter 2023. We allocated the transaction price based on the estimated stand-alone selling price of each performance obligation as follows: ● $45 million for the R&D services for the investigational medicine for AD; and ● $ million for the R&D services for t We are recognizing revenue for our R&D services performance obligations as we perform services based on our effort to satisfy our performance obligations relative to our total effort expected to satisfy our performance obligations. We currently estimate we will satisfy our performance obligations at the end of the research terms of March 2024 and March 2025 for the investigational medicines for AD and H |
Investments
Investments | 12 Months Ended |
Dec. 31, 2023 | |
Investments [Abstract] | |
Investments | 5. Investments The following table summarizes the contract maturity of the available-for-sale securities we held as of December 31, 2023: One year 68 % After one year two years 24 % After two years three and a half years 8 % Total 100 % As illustrated above, at December 31, 2023, 92 percent of our available-for-sale securities had a maturity of less than two years. All of our available-for-sale securities are available to us for use in our current operations. As a result, we categorize all of these securities as current assets even though the stated maturity of some individual securities may be one year or more beyond the balance sheet date. We invest in debt securities with strong credit ratings and an investment grade rating at or above A-1, P-1 or F-1 by Standard & Poor’s, Moody’s or Fitch, respectively. At December 31, 2023, we had an ownership interest of less than 20 percent . The following is a summary of our investments (in thousands): Amortized Gross Unrealized Estimated December 31, 2023 Cost Gains Losses Fair Value Available-for-sale securities: Corporate debt securities (1) $ 559,967 $ 157 $ (2,625 ) $ 557,499 Debt securities issued by U.S. government agencies 224,711 64 (611 ) 224,164 Debt securities issued by the U.S. Treasury (1) 513,784 152 (1,889 ) 512,047 Debt securities issued by states of the U.S. and political subdivisions of the states 17,757 42 (113 ) 17,686 Total securities with a maturity of one year or less 1,316,219 415 (5,238 ) 1,311,396 Corporate debt securities 243,151 1,270 (692 ) 243,729 Debt securities issued by U.S. government agencies 110,138 547 (21 ) 110,664 Debt securities issued by the U.S. Treasury 294,873 1,239 (480 ) 295,632 Debt securities issued by states of the U.S. and political subdivisions of the states 3,466 7 (4 ) 3,469 Total securities with a maturity of more than one year 651,628 3,063 (1,197 ) 653,494 Total available-for-sale securities $ 1,967,847 $ 3,478 $ (6,435 ) $ 1,964,890 Equity securities: Publicly traded equity securities included in other current assets (2) $ 11,897 $ 236 $ (5,832 ) $ 6,301 Privately held securities included in deposits and other assets (3) 23,115 25,001 (5,125 ) 42,991 Total equity securities $ 35,012 $ 25,237 $ (10,957 ) $ 49,292 Total available-for-sale and equity securities $ 2,002,859 $ 28,715 $ (17,392 ) $ 2,014,182 Amortized Gross Unrealized Estimated December 31, 2022 Cost Gains Losses Fair Value Available-for-sale securities: Corporate debt securities (1) $ 513,790 $ 23 $ (4,365 ) $ 509,448 Debt securities issued by U.S. government agencies 133,585 — (1,829 ) 131,756 Debt securities issued by the U.S. Treasury (1) 512,655 23 (5,124 ) 507,554 Debt securities issued by states of the U.S. and political subdivisions of the states 57,484 18 (686 ) 56,816 Other municipal debt securities 6,008 — (14 ) 5,994 Total securities with a maturity of one year or less 1,223,522 64 (12,018 ) 1,211,568 Corporate debt securities 227,631 14 (10,143 ) 217,502 Debt securities issued by U.S. government agencies 34,339 — (1,040 ) 33,299 Debt securities issued by the U.S. Treasury 245,030 — (4,109 ) 240,921 Debt securities issued by states of the U.S. and political subdivisions of the states 18,314 116 (329 ) 18,101 Total securities with a maturity of more than one year 525,314 130 (15,621 ) 509,823 Total available-for-sale securities $ 1,748,836 $ 194 $ (27,639 ) $ 1,721,391 Equity securities: Publicly traded equity securities included in other current assets (2) $ 11,897 $ — $ (1,358 ) $ 10,539 Privately held equity securities included in deposits and other assets (3) 23,115 17,257 — 40,372 Total equity securities $ 35,012 $ 17,257 $ (1,358 ) $ 50,911 Total available-for-sale and equity securities $ 1,783,848 $ 17,451 $ (28,997 ) $ 1,772,302 ________________ (1) Includes investments classified as cash equivalents in our consolidated balance sheets. (2) Our publicly traded equity securities are included in other current assets. We recognize publicly traded equity securities at fair value. In the year ended December 31, 2023, we recorded a $4.2 million net unrealized loss in our consolidated statements of operations related to changes in the fair value of our investments in publicly traded companies. (3) Our privately held equity securities are included in deposits and other assets. We recognize our privately held equity securities at , we recorded a $ million net unrealized gain in our consolidated statements of operations related to changes in the fair value of our investments in privately held companies. The following is a summary of our investments we considered to be temporarily impaired at (in thousands, except for number of investments): Less than 12 Months of Temporary Impairment More than 12 Months of Temporary Impairment Total Temporary Impairment Number of Investments Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Corporate debt securities 297 $ 323,708 $ (553 ) $ 178,183 $ (2,764 ) $ 501,891 $ (3,317 ) Debt securities issued by U.S. government agencies 63 199,372 (246 ) 14,777 (386 ) 214,149 (632 ) Debt securities issued by the U.S. Treasury 34 325,966 (1,031 ) 131,000 (1,338 ) 456,966 (2,369 ) Debt securities issued by states of the U.S. and political subdivisions of the states 61 8,352 (17 ) 7,888 (100 ) 16,240 (117 ) Total temporarily impaired securities 455 $ 857,398 $ (1,847 ) $ 331,848 $ (4,588 ) $ 1,189,246 $ (6,435 ) We believe that the decline in value of these securities is temporary and is primarily related to the change in market interest rates since purchase rather than underlying credit deterioration for any of the issuers. We believe it is more likely than not that we will be able to hold our debt securities with declines in value to maturity. Therefore, we intend to hold these securities to maturity and anticipate full recovery of our debt securities’ amortized cost basis at maturity. |
Fair Value Measurements
Fair Value Measurements | 12 Months Ended |
Dec. 31, 2023 | |
Fair Value Measurements [Abstract] | |
Fair Value Measurements | 6. Fair Value Measurements The following tables present the major security types we held at December 31, 2023 and 2022 that we regularly measure and carry at fair value At December 31, 2023 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Cash equivalents (1) $ 185,424 $ 185,424 $ — Corporate debt securities (2) 801,228 — 801,228 Debt securities issued by U.S. government agencies (3) 334,828 — 334,828 Debt securities issued by the U.S. Treasury (3) 807,679 807,679 — Debt securities issued by states of the U.S. and political subdivisions of the states (3) 21,155 — 21,155 Publicly traded equity securities included in other current assets (5) 6,301 6,301 — Total $ 2,156,615 $ 999,404 $ 1,157,211 At December 31, 2022 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Cash equivalents (1) $ 211,655 $ 211,655 $ — Corporate debt securities (4) 726,950 — 726,950 Debt securities issued by U.S. government agencies (3) 165,055 — 165,055 Debt securities issued by the U.S. Treasury (3) 748,475 748,475 — Debt securities issued by states of the U.S. and political subdivisions of the states (3) 74,917 — 74,917 Other municipal debt securities (3) 5,994 — 5,994 Publicly traded equity securities included in other current assets (5) 10,539 10,539 — Total $ 1,943,585 $ 970,669 $ 972,916 ________________ (1) Included in cash and cash equivalents in our consolidated balance sheets. (2) $33.0 million was included in cash and cash equivalents, with the difference included in short-term investments in our consolidated balance sheets. (3) Included in short-term investments in our consolidated balance sheets. (4) $11.0 million was included in cash and cash equivalents, with the difference included in short-term investments in our consolidated balance sheets. (5) Included in other current assets in our consolidated balance sheets. Convertible Notes Our 1.75% Notes, 0% Notes and 0.125% Notes had a fair value of $661.1 million, $667.8 million and $42.4 million at December 31, 2023, respectively. We determine the fair value of our notes based on quoted market prices for these notes, which are Level 2 measurements because the notes do not trade regularly. |
Long-Term Obligations and Commi
Long-Term Obligations and Commitments | 12 Months Ended |
Dec. 31, 2023 | |
Long-Term Obligations and Commitments [Abstract] | |
Long-Term Obligations and Commitments | 7. Long-Term Obligations and Commitments The carrying value of our long-term obligations was as follows (in thousands): December 31, 2023 2022 1.75 $ 562,285 $ — 0 625,380 622,242 0.125 — 544,504 Liability related to sale of future royalties 513,736 — Lease liabilities 178,969 186,156 Mortgage debt 8,859 8,998 Other obligations 33,714 7,295 Total $ 1,922,943 $ 1,369,195 Less: current portion (8,831 ) (7,535 ) Total Long-Term Obligations $ 1,914,112 $ 1,361,660 As of December 31, 2023, our 0.125% Notes was classified as a current liability because it matures in December 2024. Convertible Debt and Call Spread 1.75% Convertible Senior Notes In 2023, we completed a $575.0 million offering of convertible senior notes and used $488.2 million of the net proceeds from the issuance of the 1.75% Notes to repurchase $504.4 million in principal of our 0.125% Notes. We expect to use the remaining net proceeds to settle the 0.125% Notes that remain outstanding. At December 31, 2023, we had the following 1.75% Notes outstanding (in millions, except interest rate and price per share data): 1.75% Notes Outstanding principal balance $ 575.0 Unamortized debt issuance costs $ 12.7 Maturity date June 2028 Interest rate 1.75 % Effective interest rate 2.3 % Conversion price per share $ 53.73 Total shares of common stock subject to conversion 10.7 0% Convertible Senior Notes and Call Spread In 2021, we completed a $632.5 million offering of convertible senior notes. We used $319.0 million of the net proceeds from the issuance of the 0% Notes to pay the remaining $309.9 million principal balance of our 1% Notes in 2021. At December 31, 2023, we had the following 0% Notes outstanding (in millions, except interest rate and price per share data): 0% Notes Outstanding principal balance $ 632.5 Unamortized debt issuance costs $ 7.2 Maturity date April 2026 Interest rate 0 % Effective interest rate 0.5 % Conversion price per share $ 57.84 Effective conversion price per share with call spread $ 76.39 Total shares of common stock subject to conversion 10.9 In conjunction with the 2021 offering, we entered into a call spread transaction, which was comprised of purchasing note hedges and selling warrants, to minimize the impact of potential economic dilution upon conversion of our 0% Notes by increasing the effective conversion price on our 0% Notes. We increased our effective conversion price to $76.39 with the same number of underlying shares as our 0% Notes. The call spread cost us $46.9 million, of which $136.7 million was for the note hedge purchase, offset by $89.8 million we received for selling the warrants. Similar to our 0% Notes, our note hedges are subject to adjustment. Additionally, our note hedges are exercisable upon conversion of the 0% Notes. The note hedges will expire upon maturity of the 0% Notes, or April 2026 We recorded the amount we paid for the note hedges and the amount we received for the warrants in additional paid-in capital in our consolidated balance sheets. Refer to Note 1, Organization and Significant Accounting Policies 0.125% Convertible Senior Notes and Call Spread In 2019, we entered into privately negotiated exchange and/or subscription agreements with certain new investors and certain holders of our 1% Notes to exchange $375.6 million of our 1% Notes for $439.3 million of our 0.125% Notes, and to issue $109.5 million of our 0.125% Notes. As discussed above, in 2023, we repurchased $504.4 million of our 0.125% Notes. We are holding the repurchased 0.125% Notes in treasury until maturity. As a result, the remaining principal balance of our 0.125% Notes was $44.5 million as of December 31, 2023. Additionally, during the year ended December 31, 2023, we recorded a $13.4 million gain on the early retirement of debt, which we recorded as other income in our consolidated statements of operations. The gain on the early retirement of our debt is the difference between the amounts paid to repurchase our 0.125% Notes and the net carrying balance of the liability at the time that we completed the repurchases. At December 31, 2023, we had the following 0.125% Notes outstanding with interest payable semi-annually (in millions, except interest rate and price per share data): 0.125% Notes Outstanding principal balance $ 44.5 Unamortized debt issuance costs $ 0.2 Maturity date December 2024 Interest rate 0.125 % Effective interest rate 0.5 % Conversion price per share $ 83.28 Effective conversion price per share with call spread $ 123.38 Total shares of common stock subject to conversion, excluding shares related to 0.125 0.5 In conjunction with the issuance of our Notes in 2019, we entered into a call spread transaction, which was comprised of purchasing note hedges and selling warrants, to minimize the impact of potential economic dilution upon conversion of our . We increased our effective conversion price to $ with the same number of underlying shares as our Notes. The call spread cost us $ million, of which $ million was for the note hedge purchase, offset by $ million we received for selling the warrants. Similar to our , our note hedges are subject to adjustment. Additionally, our note hedges are exercisable upon conversion of the . The note hedges will expire upon maturity of the , or December 2024 . The note hedges and warrants are separate transactions and are not part of the terms of our . The holders of the do not have any rights with respect to the note hedges and warrants. We recorded the amount we paid for the note hedges and the amount we received for the warrants in additional paid-in capital in our consolidated balance sheets. Refer to Note 1, Organization and Significant Accounting Policies Other Terms of Convertible Senior Notes The 1.75%, 0% and 0.125% Notes are convertible under certain conditions, at the option of the note holders. We can settle conversions of the notes, at our election, in cash, shares of our common stock or a combination of both. We may not redeem the notes prior to maturity, and we do not have to provide a sinking fund for them. Holders of the notes may require us to purchase some or all of their notes upon the occurrence of certain fundamental changes, as set forth in the indentures governing the notes, at a purchase price equal to 100 percent of the principal amount of the notes to be purchased, plus any accrued and unpaid interest. Our total interest expense for our outstanding senior convertible notes for the years ended December 31, 2023, 2022 and 2021 included $5.9 million, $5.3 million and $4.9 million, respectively, of non-cash interest expense related to the amortization of debt issuance costs for our convertible notes. Financing Arrangements Operating Facilities In 2017, we purchased the building that houses our primary R&D facility for $79.4 million and our manufacturing facility for $14.0 million. We financed the purchase of these two facilities with mortgage debt of $60.4 million in total. Our primary R&D facility mortgage had an interest rate of 3.88 percent. Our manufacturing facility mortgage has an interest rate of 4.20 percent. During the first five years of both mortgages, we were only required to make interest payments. We began making principal payments in 2022. Our manufacturing facility mortgage matures in August 2027. We repaid our primary R&D facility mortgage in 2022 in conjunction with a sale and leaseback transaction. In 2022, we concurrently entered into two purchase and sale agreements with a real estate investor. In the same period, we closed the first transaction in which we sold the facilities at our headquarters in Carlsbad, California, which includes our primary R&D facility, for a purchase price of $263.4 million. As a result, we de-recognized the related land and improvements, building and building improvements, which resulted in a net gain of $150.1 million that we reported in other income in our consolidated statements of operations. We used a portion of the sale proceeds to extinguish our outstanding mortgage debt on our primary R&D facility of $51.3 million. In connection with this transaction, we leased back our headquarters facilities for an initial lease term of 15 years with options to extend the lease for two additional terms of five years each. In August 2023, we closed the second transaction and transferred legal ownership of two lots of undeveloped land adjacent to our headquarters to the real estate investor for a purchase price of $33 million. In connection with this transaction, we entered into a build-to-suit lease agreement with the same real estate investor to lease a new R&D facility. The lessor will develop and construct a new building composed of R&D and office space. We will design and construct tenant improvements to customize the facility’s interior space. We will lease the facility for an initial term of 15 years with options to extend the lease for two additional terms of five years each. The lease will commence once the structure of this new facility is completed. Since the building is under construction and unavailable to lease, we are unable to complete the sale-leaseback evaluation under ASC 842, Leases. As a result, the land remains in our consolidated balance sheets and we accounted for the proceeds as a financial liability. We will reassess the transaction under the sale-leaseback accounting guidance when the facilities are available for lease commencement. Debt Maturity Schedules Annual convertible and mortgage debt maturities, including fixed and determinable interest, at December 31, 2023 are as follows (in thousands): 2024 $ 55,298 2025 10,657 2026 643,157 2027 10,509 2028 580,277 Thereafter 8,462 Total debt and mortgage maturities $ 1,308,360 Less: Current portion included in other current liabilities (157 ) Less: Fixed and determinable interest (47,138 ) Less: Debt issuance costs (20,061 ) Total debt $ 1,241,004 Royalty Revenue Monetization In January 2023, we entered into a royalty purchase agreement with Royalty Pharma Investments, or Royalty Pharma, to monetize a portion of our future SPINRAZA and pelacarsen royalties we are entitled to under our agreements with Biogen and Novartis, respectively. As a result, we received an upfront payment of $500 million and we are eligible to receive up to $625 million in additional milestone payments. Under the terms of the agreement, Royalty Pharma will receive 25 percent of our SPINRAZA royalty payments from 2023 through 2027, increasing to 45 percent of royalty payments in 2028, on up to $1.5 billion in annual sales. In addition, Royalty Pharma will receive 25 percent of any future royalty payments on pelacarsen. Royalty Pharma’s royalty interest in SPINRAZA will revert to us after total SPINRAZA royalty payments to Royalty Pharma reach either $475 million or $550 million, depending on the timing and occurrence of FDA approval of pelacarsen. We recorded the upfront payment of $500 million as a liability related to the sale of future royalties, net of transaction costs of $10.4 million, which we are amortizing over the estimated life of the arrangement using the effective interest rate method. We recognize royalty revenue in the period in which the counterparty sells the related product and recognizes the related revenue. We record royalty payments made to Royalty Pharma as a reduction of the liability. We determine the effective interest rate used to record interest expense under this agreement based on an estimate of future royalty payments to Royalty Pharma. As of , the estimated effective interest rate under the agreement was . The following is a summary of our liability related to sale of future royalties for the year ended (in thousands): Proceeds from sale of future royalties $ 500,000 Royalty payments to Royalty Pharma (44,628 ) Interest expense related to sale of future royalties 68,238 Liability related to sale of future royalties as of December 31, 2023 523,610 Issuance costs related to sale of future royalties (10,434 ) Amortization of issuance costs related to sale of future royalties as of December 31, 2023 560 Net liability related to sale of future royalties as of December 31, 2023 $ 513,736 There are numerous factors, most of which are not within our control, that could materially impact the amount and timing of royalty payments from Biogen and Novartis, and result in changes to our estimate of future royalty payments to Royalty Pharma. Such factors include, but are not limited to, the commercial sales of SPINRAZA, the regulatory approval and commercial sales of pelacarsen, competing products or other significant events. |
Long-Term Obligations and Commitments | Operating Leases Carlsbad Leases We lease a facility adjacent to our manufacturing facility that has laboratory and office space that we use to support our manufacturing facility. We lease this space under a non-cancelable operating lease. In 2020, we exercised our option to extend our lease, extending our lease term from June 2021 to August 2026. We have one remaining option to extend the lease for an additional five-year period. We also lease an additional office space and warehouse space in Carlsbad. We lease these spaces under non-cancelable operating leases. In 2022, we exercised our option to extend the office space lease, extending our term from January 2023 to May 2027. We have no remaining options to extend this lease. Our warehouse space lease in Carlsbad has an initial term ending in 2028 with no options to extend the lease. As discussed above in the section titled, Financing Arrangements Oceanside Lease In 2022, we entered into a build-to-suit lease agreement to lease a development chemistry and manufacturing facility to be constructed by the lessor in Oceanside, California. We capitalized costs that we incurred related to the design and development of tenant improvements as construction-in-progress in our consolidated balance sheets. In August 2023, we reached a mutual agreement with the lessor to terminate the lease agreement. As a result, we recorded a charge of $20 million, primarily associated with the impairment of construction-in-progress assets, within SG&A expense Boston Leases We entered into an operating lease agreement for office space located in Boston, Massachusetts which commenced in August 2018. We are leasing this space under a non-cancelable operating lease with an initial term ending after 123 months and an option to extend the lease for an additional five-year term. Under the lease agreement, we received a three-month free rent period. In 2022, we entered into a sublease agreement for our office space located in Boston, Massachusetts. The sublease commencement date was in January 2022 when the office space was ready for our tenant’s occupancy. We are subleasing this space under a non-cancelable operating sublease with a sublease term ending 83 months following the sublease commencement date with no option to extend the sublease. Under the sublease agreement we provided a seven-month free rent period, which commenced in January 2022. We will receive lease payments over the sublease term totaling $9.6 million. We entered into an operating lease agreement for another office space located in Boston, Massachusetts which commenced in 2021. We are leasing this space under a non-cancelable operating lease with an initial term ending 91 months following the lease commencement date and an option to extend the lease for an When we determined our lease term for our operating lease right-of-use assets and lease liabilities for these leases, we did not include the extension options for these leases in the original lease term because it was not reasonably certain we would exercise those extension options. Amounts related to our operating leases were as follows (dollar amounts in millions): At December 31, 2023 Right-of-use operating lease assets $ 171.9 Operating lease liabilities $ 179.0 Weighted average remaining lease term 13.0 years Weighted average discount rate 6.9 % During the years ended December 31, 2023, 2022, and 2021 we paid $20.1 million, $4.0 million and $3.3 million of lease payments, which were included in operating activities in our consolidated statements of cash flows. As of December 31, 2023, the future payments for our operating lease liabilities are as follows (in thousands): Operating Leases Year ending December 31, 2024 $ 20,398 2025 20,645 2026 20,781 2027 20,800 2028 20,774 Thereafter 176,138 Total minimum lease payments 279,536 Less: Imputed interest (100,567 ) Less: Current portion (included in other current liabilities (8,094 ) Total long-term lease liabilities $ 170,875 Rent expense was $23.1 million, $8.3 million and $3.4 million for the years ended December 31, 2023, 2022 and 2021, respectively. |
Stockholders' Equity
Stockholders' Equity | 12 Months Ended |
Dec. 31, 2023 | |
Stockholders' Equity [Abstract] | |
Stockholders' Equity | 8. Stockholders Equity Preferred Stock We are authorized to issue up to 15 million shares of “blank check” Preferred Stock. As of December 31, 2023, there were no shares of Preferred Stock outstanding. We have designated Series C Junior Participating Preferred Stock but have no issued or outstanding shares as of December 31, 2023. Common Stock At December 31, 2023 and 2022, we had 300 million shares of common stock authorized, of which 144.3 million and 142.1 million were issued and outstanding, respectively. As of December 31, 2023, total common shares reserved for future issuance were 49.7 million. During the years ended December 31, 2023, 2022 and 2021, we issued 2.3 million, 1.2 million and 1.1 million shares of common stock, respectively, for stock option exercises, vesting of restricted stock units, and ESPP purchases. We received net proceeds from these transactions of $49.4 million, $6.4 million and $11.6 million in 2023, 2022 and 2021, respectively. Stock Plans 1989 Stock Option Plan In 1989, our Board of Directors adopted, and the stockholders subsequently approved, a stock option plan that, as amended, provides for the issuance of non-qualified and incentive stock options for the purchase of up to 20.0 million shares of common stock to our employees, directors, and consultants. The plan expires in January 2024. The 1989 Stock Option Plan, or 1989 Plan, does not allow us to grant stock bonuses or restricted stock awards and prohibits us from repricing any options outstanding under the plan unless our stockholders approve the repricing. Options vest over a four-year period, with 25 percent exercisable at the end of one year from the date of the grant and the balance vesting ratably, on a monthly basis, thereafter and have a term of seven years. At December 31, 2023, no options were outstanding and 68,000 shares were available for future grant under the 1989 Plan. 2011 Equity Incentive Plan In 2011, our Board of Directors adopted, and the stockholders subsequently approved, a stock option plan that provides for the issuance of stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, and performance cash awards to our employees, directors, and consultants. In June 2015, May 2017 and June 2019, after receiving approval from our stockholders, we amended our 2011 Equity Incentive Plan, or 2011 Plan, 2011 Plan. The amendment increased the total number of shares of common stock authorized for issuance under the 2011 Plan from million to million and added a fungible share counting ratio whereby the share reserve will be reduced by shares for each share of common stock issued pursuant to a full value award (i.e., RSU or PRSU) and increased by shares for each share of common stock returning from a full value award. 2011 Plan to increase the total number of shares of common stock authorized for issuance under the 2011 Plan from million to million. The plan expires in June 2031. The 2011 Plan does not allow us to reduce the exercise price of any outstanding stock options or stock appreciation rights or cancel any outstanding stock options or stock appreciation rights that have an exercise price or strike price greater than the current fair market value of the common stock in exchange for cash or other stock awards unless our stockholders approve such action. Currently we anticipate awarding only stock options, RSU and PRSU awards to our employees, directors and consultants. Options vest over a four-year period, with 25 percent exercisable at the end of one year from the date of the grant and the balance vesting ratably, on a monthly basis, thereafter and have a term of seven years. Options granted after December 31, 2021 have a term of ten years. We have granted restricted stock unit awards to our employees under the 2011 Plan which vest annually over a four-year period. At December 31, 2023, a total of 12.8 million options were outstanding, of which 8.7 million were exercisable, 3.3 million restricted stock unit awards were outstanding, and 8.0 million shares were available for future grant under the 2011 Plan. Under the 2011 Plan, we may issue a stock award with additional acceleration of vesting and exercisability upon or after a change in control. In the absence of such provisions, no such acceleration will occur. In addition, we implemented a change of control and severance benefit plan that provides for change of control and severance benefits to our executive officers, including our chief executive officer and chief financial officer, and vice presidents. If one of our executive officers or vice presidents is terminated or resigns for good reason during the period that begins three months before and ends twelve months following a change in control of the company, the impacted employee’s stock options and RSUs vesting will accelerate for options and RSUs outstanding as of the termination date. 2020 Equity Incentive Plan In connection with the Akcea Merger in 2020, we assumed the unallocated portion of the available share reserve under the Akcea 2015 Equity Incentive Plan. In 2020, we amended and restated the Akcea 2015 equity plan, including renaming the plan as the Ionis Pharmaceuticals, Inc. 2020 Equity Incentive Plan, or 2020 Plan. The 2020 Plan provided for the issuance of up to million shares of our Common Stock to our employees, directors and consultants who were employees of Akcea prior to the Akcea Merger. In the second quarter of 2021, our Compensation Committee approved an amendment to the 2020 Plan. The amendment decreased the total number of shares of common stock authorized for issuance under the 2020 Plan from approximately million to million. We assumed the 2020 Plan in connection with Ionis’ reacquisition of all of the outstanding shares of Akcea Therapeutics, Inc. as part of the Akcea Merger. The plan expires in December 2025. The 2020 Plan does not allow us to reduce the exercise price of any outstanding stock options or stock appreciation rights or cancel any outstanding stock options or stock appreciation rights that have an exercise price or strike price greater than the current fair market value of the common stock in exchange for cash or other stock awards unless our stockholders approve such action. Currently we anticipate awarding only stock options and RSU awards to our eligible employees, directors and consultants. Options vest over a four-year period, with 25 percent exercisable at the end of one year from the date of the grant and the balance vesting ratably, on a monthly basis, thereafter and have a term of seven years. Options granted after December 31, 2021 have a term of ten years. We have granted restricted stock unit awards to our employees under the 2020 Plan which vest annually over a four-year period. At December 31, 2023, a total of 0.4 million options were outstanding, of which 0.1 million were exercisable, 0.2 million restricted stock unit awards were outstanding, and 1.0 million shares were available for future grant under the 2020 Plan. Under the 2020 Plan, we may issue a stock award with additional acceleration of vesting and exercisability upon or after a change in control. In the absence of such provisions, no such acceleration will occur. Corporate Transactions and Change in Control under 2011 and 2020 Plans In the event of certain significant corporate transactions, our Board of Directors has the discretion to take one or more of the following actions with respect to outstanding stock awards under the 2011 and 2020 Plans: ● arrange for assumption, continuation, or substitution of a stock award by a surviving or acquiring entity (or its parent company); ● arrange for the assignment of any reacquisition or repurchase rights applicable to any shares of our common stock issued pursuant to a stock award to the surviving or acquiring corporation (or its parent company); ● accelerate the vesting and exercisability of a stock award followed by the termination of the stock award; ● arrange for the lapse of any reacquisition or repurchase rights applicable to any shares of our common stock issued pursuant to a stock award; ● cancel or arrange for the cancellation of a stock award, to the extent not vested or not exercised prior to the effective date of the corporate transaction, in exchange for cash consideration, if any, as the Board, in its sole discretion, may consider appropriate; and ● arrange for the surrender of a stock award in exchange for a payment equal to the excess of (a) the value of the property the holder of the stock award would have received upon the exercise of the stock award, over (b) any exercise price payable by such holder in connection with such exercise. 2002 Non-Employee Directors’ Stock Option Plan In 2001, our Board of Directors adopted, and the stockholders subsequently approved, an amendment and restatement of the 1992 Non-Employee Directors’ Stock Option Plan, which provides for the issuance of non-qualified stock options and restricted stock units to our non-employee directors. The name of the resulting plan is the 2002 Non-Employee Directors’ Stock Option Plan, or the 2002 Plan. In 2015, after receiving approval from our stockholders, we amended our 2002 Plan to increase the total number of shares reserved for issuance from 1.2 million to 2.0 million. In 2020, after receiving approval from our stockholders, we further amended our 2002 Plan. The amendments included: ● An increase to the total number of shares reserved for issuance under the plan from million to million shares; ● A reduction to the amount of the automatic awards under the plan; ● A revision to the vesting schedule of new awards granted; and ● An extension of the term of the plan. Options under this plan expire 10 years from the date of grant. At December 31, 2023, a total of 0.9 million options were outstanding, of which 0.9 million were exercisable, 40,000 restricted stock unit awards were outstanding, and 0.5 million shares were available for future grant under the 2002 Plan. Employee Stock Purchase Plan In 2009, our Board of Directors adopted, and the stockholders subsequently approved, the amendment and restatement of the ESPP and we reserved an additional 150,000 shares of common stock for issuance thereunder. In each of the subsequent years until 2019, we reserved an additional 150,000 shares of common stock for the ESPP resulting in a total of 3.2 million shares authorized under the plan as of December 31, 2023. The ESPP permits full-time employees to purchase common stock through payroll deductions (which cannot exceed 10 percent of each employee’s compensation) at the lower of 85 percent of fair market value at the beginning of the purchase period or the end of each purchase period. Under the amended and restated ESPP, employees must hold the stock they purchase for a minimum of six months from the date of purchase. During 2023, employees purchased and we issued to employees 0.1 million shares under the ESPP at a weighted average price of $30.53 per share. At December 31, 2023, there were 0.4 million shares available for purchase under the ESPP. Stock Option Activity The following table summarizes the stock option activity under our stock plans for the year ended December 31, 2023 (in thousands, except per share and contractual life data): Number of Shares Weighted Average Exercise Price Per Share Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31, 2022 14,970 $ 50.57 Granted 2,407 $ 38.80 Exercised (1,444 ) $ 45.06 Cancelled/forfeited/expired (1,842 ) $ 55.90 Outstanding at December 31, 2023 14,091 $ 48.43 4.74 $ 78,542 Exercisable at December 31, 2023 9,703 $ 52.24 3.20 $ 28,349 The weighted-average estimated fair values of options granted were $19.72, $18.66 and $24.35 for the years ended December 31, 2023, 2022 and 2021, respectively. The total intrinsic value of options exercised during the years ended December 31, 2023, 2022 and 2021 were $6.0 million, $1.4 million and $2.5 million, respectively, which we determined as of the date of exercise. The amount of cash received from the exercise of stock options was $65.1 million, $3.6 million and $8.5 million for the years ended December 31, 2023, 2022 and 2021, respectively. For the year ended December 31, 2023, the weighted-average fair value of options exercised was $49.23. As of December 31, 2023, total unrecognized compensation cost related to non-vested stock options was $36.6 million. We expect to recognize this cost over a weighted average period of 1.1 years. We will adjust the total unrecognized compensation cost for future changes in estimated forfeitures. Restricted Stock Unit Activity The following table summarizes the RSU activity for the year ended December 31, 2023 (in thousands, except per share data): Number of Shares Weighted Average Grant Date Fair Value Per Share Non-vested at December 31, 2022 2,766 $ 48.30 Granted 1,707 $ 40.51 Vested (1,055 ) $ 51.64 Cancelled/forfeited (179 ) $ 42.90 Non-vested at December 31, 2023 3,239 $ 43.40 For the years ended December 31, 2023, 2022 and 2021, the weighted-average grant date fair value of RSUs granted was $40.51, $36.14 and $57.02 per RSU, respectively. As of December 31, 2023, total unrecognized compensation cost related to RSUs was $53.7 million. We expect to recognize this cost over a weighted average period of 1.3 years. We will adjust the total unrecognized compensation cost for future changes in estimated forfeitures. Performance Restricted Stock Unit Activity The following table summarizes the PRSU activity for the year ended December 31, 2023 (in thousands, except per share data): Number of Shares Weighted Average Grant Date Fair Value Per Share Non-vested at December 31, 2022 143 $ 52.59 Granted 158 $ 57.43 Vested (75 ) $ 52.43 Non-vested at December 31, 2023 226 $ 56.04 For the years ended December 31, 2023, 2022 and 2021, the weighted-average grant date fair value of PRSUs granted was $57.43, $42.28 and $77.17 per PRSU, respectively. As of December 31, 2023, total unrecognized compensation cost related to PRSUs was $4.4 million. We expect to recognize this cost over a weighted average period of 1.4 years. We will adjust the total unrecognized compensation cost for future changes in estimated forfeitures. Stock-based Compensation Expense and Valuation Information The following table summarizes stock-based compensation expense for the years ended December 31, 2023, 2022 and 2021 (in thousands): Year Ended December 31, 2023 2022 2021 Cost of sales $ 499 $ 533 $ 456 Research, development and patent 77,826 73,704 87,522 Selling, general and administrative 27,484 26,027 32,700 Total $ 105,809 $ 100,264 $ 120,678 Refer to Note 1, Organization and Significant Accounting Policies For the years ended December 31, 2023, 2022 and 2021, we used the following weighted-average assumptions in our Black-Scholes calculations: Employee Stock Options: Year Ended December 31, 2023 2022 2021 Risk-free interest rate 3.8 % 2.1 % 0.6 % Dividend yield 0.0 % 0.0 % 0.0 % Volatility 46.8 % 54.5 % 54.0 % Expected life 6.3 years 6.3 years 4.9 years Board of Director Stock Options: Year Ended December 31, 2023 2022 2021 Risk-free interest rate 3.8 % 2.9 % 1.2 % Dividend yield 0.0 % 0.0 % 0.0 % Volatility 52.7 % 56.2 % 55.9 % Expected life 7.7 years 7.4 years 7.3 years ESPP: Year Ended December 31, 2023 2022 2021 Risk-free interest rate 5.3 % 1.2 % 0.1 % Dividend yield 0.0 % 0.0 % 0.0 % Volatility 36.0 % 50.1 % 42.4 % Expected life 6 months 6 months 6 months Risk-Free Interest Rate. Dividend Yield. Volatility. Expected Life. seven Forfeitures. |
Income Taxes
Income Taxes | 12 Months Ended |
Dec. 31, 2023 | |
Income Taxes [Abstract] | |
Income Taxes | 9. Income Taxes Loss before income taxes is comprised of (in thousands): Year Ended December 31, 2023 2022 2021 United States $ (334,707 ) $ (258,493 ) $ (29,966 ) Foreign 742 508 818 Loss before income taxes $ (333,965 ) $ (257,985 ) $ (29,148 ) Our income tax expense (benefit) was as follows (in thousands): Year Ended December 31, 2023 2022 2021 Current: Federal $ 35,861 $ 10,522 $ (200 ) State (3,687 ) 1,129 (690 ) Foreign 147 86 339 Total current income tax expense (benefit) 32,321 11,737 (551 ) Deferred: Federal — — — State — — — Total deferred income tax benefit — — — Total income tax expense (benefit) $ 32,321 $ 11,737 $ (551 ) Our expense (benefit) for income taxes differs from the amount computed by applying the U.S. federal statutory rate to loss before income taxes. The sources and tax effects of the differences are as follows (in thousands): Year Ended December 31, 2023 2022 2021 Pre-tax loss $ (333,965 ) $ (257,985 ) $ (29,148 ) Statutory rate (70,133 ) 21.0 % (54,177 ) 21.0 % (6,121 ) 21.0 % State income tax net of federal benefit (22,597 ) 6.8 % (13,622 ) 5.3 % 4,278 (14.7 )% Foreign (22 ) 0.0 % (49 ) 0.0 % 143 (0.5 )% Net change in valuation allowance 175,388 (52.5 )% 104,951 (40.7 )% 2,885 (9.9 )% Loss on debt transactions — — — — 262 (0.9 )% Tax credits (67,131 ) 20.1 % (39,729 ) 15.4 % (23,198 ) 79.6 % Deferred tax true-up 4 0.0 % (20 ) 0.0 % (24 ) 0.1 % Tax rate change 1,023 (0.3 )% (3,091 ) 1.2 % 12,838 (44.0 )% Non-deductible compensation 3,814 (1.1 )% 3,023 (1.2 )% 5,085 (17.4 )% Other non-deductible items 327 (0.1 )% 57 0.0 % 84 (0.3 )% Foreign-derived intangible income benefit (7,493 ) 2.2 % — — — — Stock-based compensation 19,546 (5.9 )% 14,030 (5.4 )% 4,720 (16.2 )% Other (405 ) 0.1 % 364 (0.1 )% (1,503 ) 5.1 % Effective rate $ 32,321 (9.7 )% $ 11,737 (4.5 )% $ (551 ) 1.9 % Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of our deferred tax assets and liabilities as of December 31, 2023 and 2022 are as follows (in thousands): Year Ended December 31, 2023 2022 Deferred Tax Assets: Net operating loss carryovers $ 77,964 $ 87,802 Tax credits 239,962 277,436 Deferred revenue 71,683 85,700 Stock-based compensation 77,468 86,983 Intangible and capital assets 104,380 104,649 Convertible debt 16,849 34,384 Capitalized research and development expenses 238,738 119,635 Long-term lease liabilities 43,718 45,612 Sale of future royalties 144,608 — Other 10,343 15,813 Total deferred tax assets $ 1,025,713 $ 858,014 Deferred Tax Liabilities: Fixed assets (4,166 ) (4,475 ) Right-of-use assets (42,007 ) (44,504 ) Other (1,910 ) (313 ) Net deferred tax asset $ 977,630 $ 808,722 Valuation allowance (977,630 ) (808,722 ) Total net deferred tax assets and liabilities $ — $ — We evaluate our deferred tax assets regularly to determine whether adjustments to the valuation allowance are appropriate due to changes in facts or circumstances, such as changes in expected future pre-tax earnings, tax law, interactions with taxing authorities and developments in case law. In making this evaluation, we rely on our recent history of pre-tax earnings. Our material assumptions are our forecasts of future pre-tax earnings and the nature and timing of future deductions and income represented by the deferred tax assets and liabilities, all of which involve the exercise of significant judgment. Although we believe our estimates are reasonable, we are required to use significant judgment in determining the appropriate amount of valuation allowance recorded against our deferred tax assets. Our valuation allowance increased by $169 million from December 31, 2022 to December 31, 2023. The increase was primarily related to increases in our deferred tax assets for capitalized research and development expenses and sale of future royalties. At December 31, 2023, we had federal and state, primarily California, tax net operating loss carryforwards of $242.8 million and $398.8 million, respectively. Our federal tax loss carryforwards are available indefinitely. Our California tax loss carryforwards will begin to expire in 2032. At December 31, 2023, we also had federal and California research and development tax credit carryforwards of $169.7 million and $124.4 million, respectively. Our federal research and development tax credit carryforwards will begin to expire in 2038. Our California research and development tax credit carryforwards are available indefinitely. Our 2023 current tax expense includes a benefit of approximately $3.2 million related to utilization of state tax loss carryforwards, primarily California. Utilization of the net operating loss and tax credit carryforwards may be subject to an annual limitation due to the ownership change limitations provided by the Internal Revenue Code of 1986, as amended, and similar state provisions. The annual limitation may result in the expiration of net operating losses and credits before utilization. We analyze filing positions in all U.S. federal, state and foreign jurisdictions where we file income tax returns, and all open tax years in these jurisdictions to determine if we have any uncertain tax positions on any of our income tax returns. We recognize the impact of an uncertain tax position on an income tax return at the largest amount that the relevant taxing authority is more-likely-than not to sustain upon audit. We do not recognize uncertain income tax positions if they have less than 50 percent likelihood of the applicable tax authority sustaining our position. The following table summarizes our gross unrecognized tax benefits (in thousands): Year Ended December 31, 2023 2022 2021 Beginning balance of unrecognized tax benefits $ 56,567 $ 55,085 $ 54,163 Decrease for lapse of statute of limitations (14,993 ) — — Decrease for prior period tax positions (737 ) (267 ) (695 ) Increase for prior period tax positions 429 259 263 Increase for current period tax positions 2,032 1,490 1,354 Ending balance of unrecognized tax benefits $ 43,298 $ 56,567 $ 55,085 Included in the balance of unrecognized tax benefits at December 31, 2023, 2022 and 2021 was $0.3 million, $6.2 million and $6.2 million respectively, that if we recognized, could impact our effective tax rate, subject to our remaining valuation allowance. We estimate that it is reasonably possible that the balance of our gross unrecognized tax benefits may decrease by approximately $7.6 million within the next 12 months due to the lapse of statute of limitations on underlying tax positions primarily related to amortization of certain capitalized state research and development expenditures. We recognize interest and/or penalties related to income tax matters in income tax expense. During the years ended December 31, 2023, 2022 and 2021, we recognized $0.1 million, $0.8 million and $0.5 million, respectively, of accrued interest and penalties related to gross unrecognized tax benefits. We are subject to taxation in the U.S. and various state and foreign jurisdictions. U.S. tax years 2020 through 2022 remain open to examination and tax years 2019 through 2022 remain open to examination by major state taxing jurisdictions, primarily California, although net operating loss and credit carryforwards generated prior to these periods may still be adjusted upon examination by the Internal Revenue Service or state tax authorities if they have been used in an open period or are used in a future period |
Employment Benefits
Employment Benefits | 12 Months Ended |
Dec. 31, 2023 | |
Employment Benefits [Abstract] | |
Employment Benefits | 10. Employment Benefits We have employee 401(k) salary deferral plans covering all employees. Employees could make contributions by withholding a percentage of their salary up to the IRS annual limits of $22,500 and $30,000 in 2023 for employees under 50 years old and employees 50 years old or over, respectively. We made approximately $7.1 million, $5.6 million and $5.5 million in matching contributions for the years ended December 31, 2023, 2022 and 2021, respectively. |
Legal Proceedings
Legal Proceedings | 12 Months Ended |
Dec. 31, 2023 | |
Legal Proceedings [Abstract] | |
Legal Proceedings | 11. Legal Proceedings From time to time, we are involved in legal proceedings arising in the ordinary course of our business. Periodically, we evaluate the status of each legal matter and assess our potential financial exposure. If we consider the potential loss from any legal proceeding to be probable and we can reasonably estimate the amount, we accrue a liability for the estimated loss. The outcome of any proceeding is not determinable in advance. Therefore, we are required to use significant judgment to determine the probability of a loss and whether the amount of the loss is reasonably estimable. Our assessment of a potential liability and the amount of accruals we recorded are based only on the information available to us at the time. As additional information becomes available, we reassess the potential liability related to the legal proceeding and may revise our estimates. There are no pending material legal proceedings to which we are a party or of which our property is the subject. |
Fourth Quarter Financial Data (
Fourth Quarter Financial Data (Unaudited) | 12 Months Ended |
Dec. 31, 2023 | |
Fourth Quarter Financial Data (Unaudited) [Abstract] | |
Fourth Quarter Financial Data (Unaudited) | 12. Fourth Quarter Financial Data (Unaudited) The following financial information reflects all normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the results of the interim periods. Summarized fourth quarter data for 2023 and 2022 are as follows (in thousands, except per share data). Three Months Ended December 31, 2023 2022 Revenue (1) $ 324,505 $ 151,890 Operating expenses (2) $ 330,627 $ 359,909 Loss from operations $ (6,122 ) $ (208,019 ) Net loss (3) $ (9,263 ) $ (52,430 ) Basic net loss per share (4) (5) $ (0.06 ) $ (0.37 ) Diluted net loss per share (4) (6) $ (0.06 ) $ (0.37 ) ________________ (1) Revenue was higher in the three months ended December 31, 2023 compared to the same period in 2022 primarily due to the $50 million milestone payment we earned from AstraZeneca when the FDA approved WAINUA for ATTRv-PN in the U.S., $36 million payment we earned when AstraZeneca licensed ION826 and revenue we recognized in the fourth quarter of 2023 from the upfront payments we received from our new collaborations with Otsuka, Roche and Novartis. (2) Operating expenses were lower in the three months ended December 31, 2023 compared to the same period in 2022 primarily due to the $80 million upfront payment we made for our collaboration with Metagenomi in the fourth quarter of 2022. (3) Our net loss for the three months ended December 31, 2022 includes the $150.1 million gain we recognized from the sale and leaseback transaction for our headquarters in Carlsbad, California. (4) We the year. (5) As discussed in Note 1, Organization and Significant Accounting Policies, (6) We incurred a net loss for the fourth quarter of 2023 and 2022. As a result, we did not include dilutive common equivalent shares in the computation of diluted net loss per share because the effect would have been anti-dilutive. |
Insider Trading Arrangements
Insider Trading Arrangements | 3 Months Ended | 12 Months Ended |
Dec. 31, 2023 shares | Dec. 31, 2023 shares | |
Insider Trading Arrangements [Line Items] | ||
Material Terms of Trading Arrangement | During the quarter ended December 31, 2023, our officers and directors (as defined in Rule 16a-1(f) under the Exchange Act), or Section 16 officers and directors, adopted or terminated contracts, instructions or written plans for the purchase or sale of our securities as noted in the table below. * Contract, instruction or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. ** “Non-Rule 10b5-1 trading arrangement” as defined in item 408(c) of Regulation S-K under the Exchange Act. Action Date Trading Arrangement Total Shares to be Sold Expiration Date Rule 10b5-1* Non-Rule 10b5-1** Joseph Wender, Board Member Adoption November 30, 2023 X 104,079 February 28, 2025 | |
Name | Joseph Wender | |
Title | Board Member | |
Rule 10b5-1 Arrangement Adopted | true | |
Non-Rule 10b5-1 Arrangement Adopted | false | |
Adoption Date | November 30, 2023 | |
Arrangement Duration | 15 months | |
Aggregate Available | 104,079 | 104,079 |
Organization and Significant _2
Organization and Significant Accounting Policies (Policies) | 12 Months Ended |
Dec. 31, 2023 | |
Organization and Basis of Presentation [Abstract] | |
Basis of Presentation | Basis of Presentation In our consolidated financial statements we included the accounts of Ionis Pharmaceuticals, Inc. and the consolidated results of our wholly owned subsidiary, Akcea Therapeutics, Inc. and its wholly owned subsidiaries (“we”, “us” or “our”). |
Use of Estimates | Use of Estimates We prepare our consolidated financial statements in conformity with accounting principles generally accepted in the United States, or U.S., that require us to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Actual results could differ from our estimates. |
Revenue Recognition | Revenue Recognition We generally recognize revenue when we have satisfied all contractual obligations and are reasonably assured of collecting the resulting receivable. We are often entitled to bill our customers and receive payment from our customers in advance of recognizing the revenue. In the instances in which we have received payment from our customers in advance of recognizing revenue, we include the amounts within deferred revenue in our consolidated balance sheets. At contract inception, we analyze our collaboration arrangements to assess whether such arrangements involve joint operating activities performed by parties that are both active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities and therefore within the scope of ASC Topic 808, Collaborative Arrangements ASC does not address the recognition and measurement of collaborative arrangements and instead refers companies to use other authoritative accounting literature. For collaboration arrangements within the scope of ASC that contain multiple elements, we determine which elements of the collaboration reflect a vendor-customer relationship and therefore are within the scope of ASC , Revenue from Contracts with Customers . When we determine elements of a collaboration do not reflect a vendor-customer relationship, we consistently apply the reasonable and rational policy election we made by analogizing to authoritative accounting literature We evaluate the income statement classification for presentation of amounts due from or owed to other participants associated with multiple activities in a collaboration arrangement based on the nature of each separate activity. For example, in our WAINUA collaboration with AstraZeneca, we recognize funding received from AstraZeneca for co-development activities as revenue; while we recognize cost sharing payments to and from AstraZeneca associated with co-commercialization activities and co-medical affairs activities as selling, general and administrative, or SG&A, expense and research and development, or R&D, expense, respectively. Steps to Recognize Revenue For elements of our contractual relationships that we account for under ASC 606, we use a five-step process to determine the amount of revenue we should recognize and when we should recognize it. The five-step process is as follows: 1. Identify the contract Accounting rules require us to first determine if we have a contract with our partner, including confirming that we have met each of the following criteria: ● We and our partner approved the contract and we are both committed to perform our obligations; ● We have identified our rights, our partner’s rights and the payment terms; ● We have concluded that the contract has commercial substance, meaning that the risk, timing, or amount of our future cash flows is expected to change as a result of the contract; and ● We believe collectability of the consideration is probable. 2. Identify the performance obligations We next identify our performance obligations, which represent the distinct goods and services we are required to provide under the contract. We may enter into a collaboration agreement in which we provide our partner with an option to license a medicine in the future. We may also provide our partner with an option to request that we provide additional goods or services in the future, such as active pharmaceutical ingredient, or API. We evaluate whether these options are material rights at the inception of the agreement. If we determine an option is a material right, we will consider the option a separate performance obligation. When a partner exercises its option to license a medicine that was not previously determined to be a material right at the inception of the agreement or requests additional goods or services, then we identify a new performance obligation for that item In some cases, we deliver a license at the start of an agreement. If we determine that our partner has full use of the license and we do not have any additional material performance obligations related to the license after delivery, then we consider the license to be a separate performance obligation. 3. Determine the transaction price We then determine the transaction price by reviewing the amount of consideration we are eligible to earn under the collaboration agreement, including any variable consideration. Under our collaboration agreements, consideration typically includes fixed consideration in the form of an upfront payment and variable consideration in the form of potential milestone payments, license fees and royalties. At the start of an agreement, our transaction price usually consists of only the upfront payment. We do not typically include any payments we may receive in the future in our initial transaction price because the payments are not probable and are contingent on certain future events. We reassess the total transaction price at each reporting period to determine if we should include additional payments in the transaction price. Milestone payments are our most common type of variable consideration. We recognize milestone payments using the most likely amount method because we will either receive the milestone payment or we will not, which makes the potential milestone payment a binary event. The most likely amount method requires us to determine the likelihood of earning the milestone payment. We include a milestone payment in the transaction price once it is probable that we will achieve the milestone event. Most often, we do not consider our milestone payments probable until we or our partner achieve the milestone event because the majority of our milestone payments are contingent upon events that are not within our control and/ or are usually based on scientific progress which is inherently uncertain. 4. Allocate the transaction price Next, we allocate the transaction price to each of our performance obligations. When we have to allocate the transaction price to more than performance obligation, we make estimates of the relative stand-alone selling price of each performance obligation because we do not typically sell our goods or services on a stand-alone basis. We then allocate the transaction price to each performance obligation based on the relative stand-alone selling price. We do not reallocate the transaction price after the start of an agreement to reflect subsequent changes in stand-alone selling prices. We may engage a party, independent valuation specialist to assist us with determining a stand-alone selling price for collaborations in which we deliver a license at the start of an agreement. We estimate the stand-alone selling price of these licenses using valuation methodologies, such as the relief from royalty method. Under this method, we estimate the amount of income, net of taxes, for the license. We then discount the projected income to present value. The significant inputs we use to determine the projected income of a license could include ● Estimated future product sales; ● Estimated royalties we may receive from future product sales; ● Estimated contractual milestone payments we may receive; ● Estimated expenses we may incur; ● Estimated income taxes; and ● A discount rate. We typically estimate the selling price of R&D services by using our internal estimates of the cost to perform the specific services. The significant inputs we use to determine the selling price of our R&D services include: ● The estimated number of internal hours we will spend performing these services; ● The estimated cost of work we will perform; ● The estimated cost of work that we will contract with third parties to perform; and ● The estimated cost of API we will use. For purposes of determining the stand-alone selling price of the R&D services we perform and the API we will deliver, accounting guidance requires us to include a markup for a reasonable profit margin. 5. Recognize revenue We recognize revenue in of ways, over time or at a point in time. We recognize revenue over time when we are executing on our performance obligation over time and our partner receives benefit over time. For example, we recognize revenue over time when we provide R&D services. We recognize revenue at a point in time when our partner receives full use of an item at a specific point in time. For example, we recognize revenue at a point in time when we deliver a license or API to a partner. For R&D services that we recognize over time, we measure our progress using an input method. The input methods we use are based on the effort we expend or costs we incur toward the satisfaction of our performance obligation. We estimate the amount of effort we expend, including the time we estimate it will take us to complete the activities, or costs we incur in a given period, relative to the estimated total effort or costs to satisfy the performance obligation. This results in a percentage that we multiply by the transaction price to determine the amount of revenue we recognize each period. This approach requires us to make numerous estimates and use significant judgement. If our estimates or judgements change over the course of the collaboration, they may affect the timing and amount of revenue that we recognize in the current and future periods. We recognize royalty revenue in the period in which the counterparty sells the related product and recognizes the related revenue, which in certain cases may require us to estimate our royalty revenue. Under our distribution agreements with Swedish Orphan Biovitrum AB, or Sobi, we concluded that our performance obligation is to provide services to Sobi over the term of the agreement, which includes supplying finished goods inventory to Sobi. We are also responsible for maintaining the marketing authorization for TEGSEDI and WAYLIVRA in major markets and for leading the global commercial strategy for each medicine. We view this performance obligation as a series of distinct activities that are substantially the same. Therefore, we recognize as revenue the price Sobi pays us for the inventory when we deliver the finished goods inventory to Sobi. We also recognize distribution fee revenue based on Sobi’s net sales of TEGSEDI and WAYLIVRA. Under our agreements with Sobi, Sobi does not generally have a right of return. Amendments to Agreements From time to time we amend our collaboration agreements. When this occurs, we are required to assess the following items to determine the accounting for the amendment: 1) If the additional goods and/or services are distinct from the other performance obligations in the original agreement; and 2) If the goods and/or services are sold at a stand-alone selling price. If we conclude the goods and/or services in the amendment are distinct from the performance obligations in the original agreement and at a stand-alone selling price, we account for the amendment as a separate agreement. If we conclude the goods and/or services are not distinct and are sold at a stand-alone selling price, we then assess whether the remaining goods or services are distinct from those already provided. If the goods and/or services are distinct from what we have already provided, then we allocate the remaining transaction price from the original agreement and the additional transaction price from the amendment to the remaining goods and/or services. If the goods and/or services are not distinct from what we have already provided, we update the transaction price for our single performance obligation and recognize any change in our estimated revenue as a cumulative-effect adjustment. Multiple agreements From time to time, we may enter into separate agreements at or near the same time with the same partner. We evaluate such agreements to determine whether we should account for them individually as distinct arrangements or whether the separate agreements should be combined and accounted for together. We evaluate the following to determine the accounting for the agreements: ● Whether the agreements were negotiated together with a single objective; ● Whether the amount of consideration in one contract depends on the price or performance of the other agreement; or ● Whether the goods and/or services promised under the agreements are a single performance obligation. Our evaluation involves significant judgment to determine whether a group of agreements might be so closely related that accounting guidance requires us to account for them as a combined arrangement. Refer to Note 4, Collaborative Arrangements and Licensing Agreements |
Contracts Receivable | Contracts Receivable Our contracts receivable balance represents the amounts we have billed our partners or customers and that are due to us unconditionally for goods we have delivered or services we have performed. When we bill our partners or customers with payment terms based on the passage of time, we consider the contracts receivable to be unconditional. We typically receive payment within one quarter of billing our partner or customer As of December 31, 2023, approximately 87.8 percent of our contracts receivables were from one significant customer. As of December 31, 2022, approximately 82.5 percent of our contracts receivables were from one significant customer. |
Unbilled SPINRAZA Royalties | Unbilled SPINRAZA Royalties Our unbilled SPINRAZA royalties represent our right to receive consideration from Biogen in advance of when we are eligible to bill Biogen for SPINRAZA royalties. We include these unbilled amounts in other current assets in our consolidated balance sheets. |
Deferred Revenue | Deferred Revenue We are often entitled to bill our customers and receive payment from our customers in advance of our obligation to provide services or transfer goods to our partners. In these instances, we include the amounts in deferred revenue in our consolidated balance sheets. |
Cost of Sales | Cost of Sales Our cost of sales is comprised of costs related to our commercial revenue, including manufacturing costs, transportation and freight costs and indirect overhead costs associated with the manufacturing and distribution of our products. We also may include certain period costs related to manufacturing services and inventory adjustments in cost of sales. |
Research, Development and Patent Expenses | Research, Development and Patent Expenses Our research, development and patent expenses include wages, benefits, facilities, supplies, external services, clinical trial and manufacturing costs, patents and other expenses that are directly related to our R&D operations. We expense R&D costs as we incur them. When we make payments for R&D services prior to the services being rendered, we record those amounts as prepaid assets in our consolidated balance sheets and we expense them as the services are provided. A portion of the costs included in R&D expenses are costs associated with our partner agreements. In 2023, 2022 and 2021, patent expenses were $4.3 million, $4.7 million and $5.3 million, respectively. |
Income Taxes | Income Taxes We account for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in our financial statements or tax returns. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carryforwards. We record a valuation allowance when necessary to reduce our net deferred tax assets to the amount expected to be realized. We apply the authoritative accounting guidance prescribing a threshold and measurement attribute for the financial recognition and measurement of a tax position taken or expected to be taken in a tax return. We recognize liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires us to estimate and measure the tax benefit as the largest amount that is more than 50 percent likely to be realized upon ultimate settlement. We are required to use significant judgment in evaluating our uncertain tax positions and determining our provision for income taxes. Although we believe our reserves are reasonable, we can provide no assurance that the final tax outcome of these matters will not be different from that which we have reflected in our historical income tax provisions and accruals. We adjust these reserves for changing facts and circumstances, such as the closing of a tax audit or the refinement of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences may impact the provision for income taxes in the period in which we make such determination. We are also required to use significant judgment in determining any valuation allowance recorded against our deferred tax assets. In assessing the need for a valuation allowance, we consider all available evidence, including scheduled reversal of deferred tax liabilities, past operating results, the feasibility of tax planning strategies and estimates of future taxable income. We base our estimates of future taxable income on assumptions that are consistent with our plans. The assumptions we use represent our best estimates and involve inherent uncertainties and the application of our judgment. Should actual amounts differ from our estimates, the amount of our tax expense and liabilities we recognize could be materially impacted. We record a valuation allowance to reduce the balance of our net deferred tax assets to the amount we believe is more-likely-than-not to be realized. |
Basic and Diluted Net Loss Per Share | Basic and Diluted Net Loss per Share Basic net loss per share We compute basic net loss per share by dividing our net loss by our weighted-average number of common shares outstanding during the period. Diluted net loss per share For the years ended December 31, 2023, 2022 and 2021, we incurred a net loss; therefore, we did not include dilutive common equivalent shares in the computation of diluted net loss per share because the effect would have been anti-dilutive. Common stock from the following would have had an anti-dilutive effect on net loss per share: ● 0 percent convertible senior notes, or Notes; ● Note hedges related to the Notes; ● 0.125 percent convertible senior notes, or Notes; ● Note hedges related to the Notes; ● Dilutive stock options; ● Unvested restricted stock units, or RSUs; ● Unvested performance restricted stock units, or PRSUs; and ● Employee Stock Purchase Plan, or ESPP. For the year ended December 31, 2023, common stock underlying the 1.75 percent convertible senior notes, or 1.75% Notes, would also have had an anti-dilutive effect on net loss per share. Additionally as of December 31, 2023, 2022 and 2021, we had warrants related to our 0% Notes and 0.125% Notes outstanding. We will include the shares issuable under these warrants in our calculation of diluted earnings per share when the average market price per share of our common stock for the reporting period exceeds the strike price of the warrants. |
Stock-Based Compensation Expense | Stock-Based Compensation Expense We measure stock-based compensation expense for equity-classified awards, principally related to stock options, RSUs, PRSUs and stock purchase rights under our ESPP based on the estimated fair value of the award on the date of grant. We recognize the value of the portion of the award that we ultimately expect to vest as stock-based compensation expense over the requisite service period in our consolidated statements of operations. We reduce stock-based compensation expense for estimated forfeitures at the time of grant and revise in subsequent periods if actual forfeitures differ from those estimates. We recognize compensation expense for stock options granted, RSUs, PRSUs and stock purchase rights under the ESPP using the accelerated multiple-option approach. Under the accelerated multiple-option approach (also known as the graded-vesting method), we recognize compensation expense over the requisite service period for each separately vesting tranche of the award as though the award were in substance multiple awards, which results in the expense being front-loaded over the vesting period. Stock Options and Stock Purchase Rights: We use the Black-Scholes model to estimate the fair value of stock options granted and stock purchase rights under our ESPP. On the grant date, we use our stock price and assumptions regarding a number of variables to determine the estimated fair value of stock-based payment awards. These variables include, but are not limited to, our expected stock price volatility over the term of the awards, and actual and projected employee stock option exercise behaviors. The expected term of stock options granted represents the period of time that we expect them to be outstanding. Historically, we estimated the expected term of options granted based on historical exercise patterns. In 2021, our Compensation Committee approved an amendment to the 2011 Equity Incentive Plan, or 2011 Plan, and the 2020 Equity Incentive Plan, or 2020 Plan, that increased the contractual term of stock options granted under these plans from seven years to ten years for stock options granted on January 1, 2022 and thereafter. We determined that we are unable to rely on our historical exercise data as a basis for estimating the expected life of stock options granted to employees following this change because the contractual term changed and we have no other means to reasonably estimate future exercise behavior. We therefore used the simplified method for determining the expected life of stock options granted to employees in the years ended December 31, 2023 and 2022. Under the simplified method, we calculate the expected term as the average of the time-to-vesting and the contractual life of the options. As we gain additional historical information, we will transition to calculating our expected term based on our historical exercise patterns. RSU’s: The fair value of RSUs is based on the market price of our common stock on the date of grant. The RSUs we have granted to employees vest annually over a four-year period. The RSUs we granted to our board of directors prior to June 2020 vest annually over a four-year period. RSUs we granted to our board of directors after June 2020 fully vest after one year. PRSU’s: Beginning in 2020, we added PRSU awards to the compensation for our Chief Executive Officer, Dr. Brett Monia. Beginning in 2022, we added PRSU awards to the compensation for our other Section 16 officers. Under the terms of the PRSUs we granted in 2020 through 2022, one third Under the terms of the PRSUs we granted in 2023, 100 percent of the PRSUs may vest at the end of the three-year performance period based on our relative TSR as compared to a peer group of companies and as measured at the end of the performance period. Under the terms of the grants, no number of PRSUs is guaranteed to vest and the actual number of PRSUs that will vest at the end of each performance period may be anywhere from zero to 200 percent of the target number depending on our relative TSR. We determined the fair value of the PRSUs using a Monte Carlo model because the performance target is based on our relative TSR, which represents a market condition. We are recognizing the grant date fair value of these awards as stock-based compensation expense using the accelerated multiple-option approach over the vesting period. Refer to Note 8, Stockholders’ Equity, |
Concentration of Credit Risk | Concentration of Credit Risk Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents, short-term investments and receivables. We place our cash equivalents and short-term investments with reputable financial institutions. We primarily invest our excess cash in commercial paper and debt instruments of the U.S. Treasury, financial institutions, corporations, and U.S. government agencies with strong credit ratings and an investment grade rating at or above A-1, P-1 or F-1 by Moody’s, Standard & Poor’s, or S&P, or Fitch, respectively. We have established guidelines relative to diversification and maturities that maintain safety and liquidity. We periodically review and modify these guidelines to maximize trends in yields and interest rates without compromising safety and liquidity. |
Fair Value Measurements | Fair Value Measurements We have estimated the fair value of our financial instruments. The amounts reported for cash, accounts receivable, accounts payable and accrued expenses approximate the fair value because of their short maturities. We report our investment securities at their estimated fair value based on quoted market prices for identical or similar instruments. We use a three-tier fair value hierarchy to prioritize the inputs used in our fair value measurements. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets for identical assets, which includes our money market funds and treasury securities classified as available-for-sale securities and our investment in equity securities in publicly traded biotechnology companies; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable, which includes our fixed income securities and commercial paper classified as available-for-sale securities; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring us to develop our own assumptions. We classify most of our securities as Level 2. We obtain the fair value of our Level 2 investments from our custodian bank or from a professional pricing service. We validate the fair value of our Level 2 investments by understanding the pricing model used by the custodian banks or professional pricing service provider and comparing that fair value to the fair value based on observable market prices. |
Cash, Cash Equivalents and Investments | Cash, Cash Equivalents and Investments We consider all liquid investments with maturities of three months or less when we purchase them to be cash equivalents. Our short-term investments have initial maturities of greater than three months from date of purchase. We classify our short-term debt investments as “available-for-sale” and carry them at fair market value based upon prices on the last day of the fiscal period for identical or similar items. We record unrealized gains and losses on debt securities as a separate component of comprehensive income (loss) and include net realized gains and losses in gain (loss) on investments in our consolidated statements of operations. We use the specific identification method to determine the cost of securities sold. We also have equity investments of less than 20 percent ownership in public and private biotechnology companies that we received as part of a technology license or partner agreement. At December 31, 2023, we held equity investments in three publicly traded companies and seven privately held companies. We are required to measure and record our equity investments at fair value and to recognize the changes in fair value in our consolidated statements of operations. We account for our equity investments in publicly traded companies at their listed stock price. We account for our equity investments in privately held companies at their cost minus impairments, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. |
Inventories | Inventories We reflect our inventory in our consolidated balance sheets at the lower of cost or net realizable value under the first-in, first-out method, or FIFO. We capitalize the costs of raw materials that we purchase for use in producing our medicines because until we use these raw materials, they have alternative future uses, which we refer to as clinical raw materials. We include in inventory raw material costs for medicines that we manufacture for our partners under contractual terms and that we use primarily in our clinical development activities and drug products. We can use each of our raw materials in multiple products and, as a result, each raw material has future economic value independent of the development status of any single medicine. For example, if one of our medicines failed, we could use the raw materials for that medicine to manufacture our other medicines. We expense these costs as R&D expenses when we begin to manufacture API for a particular medicine if the medicine has not been approved for marketing by a regulatory agency. Our raw materials- commercial inventory includes API for our commercial medicines. We capitalize material, labor and overhead costs as part of our raw materials- commercial inventory. We review our inventory periodically and reduce the carrying value of items we consider to be slow moving or obsolete to their estimated net realizable value based on forecasted demand compared to quantities on hand. We consider several factors in estimating the net realizable value, including shelf life of our inventory, alternative uses for our medicines in development and historical write-offs. |
Property, Plant and Equipment | Property, Plant and Equipment We carry our property, plant and equipment at cost and depreciate it on the straight-line method over its estimated useful life, which we determine as the following (in years): Estimated Useful Lives Computer software, laboratory, manufacturing and other equipment 3 to 10 Building, building improvements and building systems 15 to 40 Land improvements 20 Leasehold improvements 5 to 15 Furniture and fixtures 5 to 10 We depreciate our leasehold improvements using the shorter of the estimated useful life or remaining lease term. We evaluate long-lived assets, which include property, plant and equipment, for impairment on at least a quarterly basis and whenever events or changes in circumstances indicate that we may not be able to recover the carrying amount of such assets. |
Accrued Liabilities | Accrued Liabilities We have numerous medicines in preclinical studies and/or clinical trials at clinical sites throughout the world. On at least a quarterly basis, we estimate our liability for preclinical and clinical development costs we have incurred and services that we have received but for which we have not yet been billed and maintain an accrual to cover these costs. These costs primarily relate to third-party clinical management costs, laboratory and analysis costs, toxicology studies and investigator grants. We estimate our liability using assumptions about study and patient activities and the related expected expenses for those activities determined based on the contracted fees with our service providers. The assumptions we use represent our best estimates of the activity and expenses at the time of our accrual and involve inherent uncertainties and the application of our judgment. Upon settlement, these costs may differ materially from the amounts accrued in our consolidated financial statements. Our historical accrual estimates have not been materially different from our actual amounts. |
Convertible Debt | Convertible Debt We account for each of our convertible debt instruments as a single unit of accounting, a liability, because we concluded that the conversion features do not require bifurcation as a derivative under ASC 815-15 and we did not issue our convertible debt instruments at a substantial premium. We record debt issuance costs as contra-liabilities in our consolidated balance sheets at issuance and amortize them over the contractual term of the convertible debt instrument using the effective interest rate. balances of our convertible senior notes presented in our consolidated balance sheets represent the principal balance of each convertible debt instrument less debt issuance costs. As of December 31, 2023, we had three outstanding convertible senior notes, our 1.75% Notes, which mature in June 2028, our 0% Notes, which mature in April 2026, and our 0.125% Notes, which mature in December 2024. Refer to Note 7, Long-Term Obligations and Commitments |
Call Spread | Call Spread In conjunction with the issuance of our 0% Notes and 0.125% Notes in April 2021 and December 2019, respectively, we entered into call spread transactions, which were comprised of purchasing note hedges and selling warrants. We account for the note hedges and warrants as separate freestanding financial instruments and treat each instrument as a separate unit of accounting. We determined that the note hedges and warrants do not meet the definition of a liability using the guidance contained in ASC Topic 480; therefore, we account for the note hedges and warrants using the Derivatives and Hedging – Contracts in Entity’s Own Equity |
Liability Related to Sale of Future Royalties | Liability Related to Sale of Future Royalties In January 2023, we entered into a royalty purchase agreement with Royalty Pharma Investments, or Royalty Pharma, to monetize a portion of our future SPINRAZA and pelacarsen royalties we are entitled to under our arrangements with Biogen and Novartis, respectively. Refer to Note 7, Long-Term Obligations and Commitments Under our agreement with Royalty Pharma, we record upfront payments and milestone payments we receive from the sale of future royalties as a liability, net of transaction costs. We record royalty payments made to Royalty Pharma as a reduction of the liability or accrued interest and amortize the transaction costs over the estimated life of the royalty stream. We account for the associated interest expense under the effective interest rate method, while continuing to recognize the full amount of royalty revenue in the period in which the counterparty sells the related product and recognizes the related revenue. We calculate the liability related to the sale of future royalties, effective interest rate and the related interest expense using our current estimate of anticipated future royalty payments under the arrangement, which we periodically reassess based on internal projections and information from our partners who are responsible for commercializing the medicines. If there is a material change in our estimate, we will prospectively adjust the effective interest rate and the related interest expense. |
Leases | Leases We determine if an arrangement contains a lease at inception. We currently only have operating leases. We recognize a right-of-use operating lease asset and associated short- and long-term operating lease liability in our consolidated balance sheets for operating leases greater than one year. Our right-of-use assets represent our right to use an underlying asset for the lease term and our lease liabilities represent our obligation to make lease payments arising from the lease arrangement. We recognize our right-of-use operating lease assets and lease liabilities based on the present value of the future minimum lease payments we will pay over the lease term. As our leases do not provide an interest rate implicit in the lease, we use our incremental borrowing rate, based on the information available as of the lease inception date or at the lease option extension date in determining the present value of future payments. We recognize rent expense for our minimum lease payments on a straight-line basis over the expected term of our lease. Our leases do not include material variable or contingent lease payments. We recognize period expenses, such as common area maintenance expenses, in the period we incur the expense. |
Segment Information | Segment Information We operate as a single segment, Ionis operations, because our chief decision maker reviews operating results on an aggregate basis and manages our operations as a single |
Recently Issued Accounting Standards | Recently Issued Accounting Standards In November 2023, the Financial Accounting Standards Board, or FASB, issued updated guidance on segment reporting. The guidance requires public companies with a single reportable segment to provide all disclosures required under ASC 280, Segment Reporting In December 2023, the FASB issued updated guidance on income tax disclosures. The new guidance requires companies to provide additional disaggregation of information related to the income tax rate reconciliation and income tax payments. In addition, the guidance eliminates certain existing disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities. This update is effective for annual periods beginning after December 15, 2024. Early adoption of this guidance is permitted. We currently plan to adopt this guidance in our 2025 Annual Report on Form 10-K. We do not expect any other recently issued accounting standards to have a material impact to our financial results. |
Organization and Significant _3
Organization and Significant Accounting Policies (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Organization and Basis of Presentation [Abstract] | |
Property, Plant and Equipment | We carry our property, plant and equipment at cost and depreciate it on the straight-line method over its estimated useful life, which we determine as the following (in years): Estimated Useful Lives Computer software, laboratory, manufacturing and other equipment 3 to 10 Building, building improvements and building systems 15 to 40 Land improvements 20 Leasehold improvements 5 to 15 Furniture and fixtures 5 to 10 |
Supplemental Financial Data (Ta
Supplemental Financial Data (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Supplemental Financial Data [Abstract] | |
Inventories | Our inventory consisted of the following (in thousands): December 31, 2023 2022 Raw materials: Raw materials- clinical $ 20,985 $ 17,061 Raw materials- commercial 1,809 2,699 Total raw materials 22,794 19,760 Work in process 5,477 2,109 Finished goods 154 164 Total inventory $ 28,425 $ 22,033 |
Property, Plant and Equipment | Our property, plant and equipment consisted of the following (in thousands): December 31, 2023 2022 Computer software, laboratory, manufacturing and other equipment $ 79,885 $ 74,351 Building, building improvements and building systems 41,228 41,158 Leasehold improvements 28,276 28,357 Furniture and fixtures 9,844 9,575 159,233 153,441 Less: Accumulated depreciation (96,759 ) (87,716 ) 62,474 65,725 Land 8,569 8,569 Total $ 71,043 $ 74,294 |
Accrued Liabilities | Our accrued liabilities consisted of the following (in thousands): December 31, 2023 2022 Clinical expenses $ 105,967 $ 116,460 In-licensing expenses 7,454 7,945 Commercial expenses 4,875 3,498 Other miscellaneous expenses 29,598 12,198 Total accrued liabilities $ 147,894 $ 140,101 |
Revenues (Tables)
Revenues (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Revenues [Abstract] | |
Revenues | During the years ended December 31, , and Year Ended December 31, 2023 2022 2021 Revenue: Commercial revenue: SPINRAZA royalties $ 240,379 $ 242,314 $ 267,776 Other commercial revenue: TEGSEDI and WAYLIVRA revenue, net 34,913 30,051 55,500 Licensing and other royalty revenue 33,299 30,993 19,119 Total other commercial revenue 68,212 61,044 74,619 Total commercial revenue 308,591 303,358 342,395 Research and development revenue: Collaborative agreement revenue 352,657 207,222 468,061 WAINUA joint development revenue 126,399 76,787 — Total research and development revenue 479,056 284,009 468,061 Total revenue $ 787,647 $ 587,367 $ 810,456 |
Collaborative Arrangements an_2
Collaborative Arrangements and Licensing Agreements (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Biogen [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with Biogen (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with Biogen $ 350,146 $ 366,696 $ 428,784 Percentage of total revenue 44 % 62 % 53 % |
AstraZeneca [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with AstraZeneca (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with AstraZeneca $ 202,236 $ 79,160 $ 254,591 Percentage of total revenue 26 % 13 % 31 % |
GSK [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with GSK (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with GSK $ 15,000 $ — $ — Percentage of total revenue 2 % 0 % 0 % |
Novartis [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with Novartis (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with Novartis $ 30,194 $ 237 $ 25,526 Percentage of total revenue 4 % Less than 1% 3 % |
Otsuka [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the year ended December 31, 2023, we earned the following revenue from our relationship with Otsuka (in thousands, except percentage amount): Year Ended December 31, 2023 Revenue from our relationship with Otsuka $ 56,480 Percentage of total revenue 7 % |
Roche [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with Roche (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with Roche $ 48,838 $ 67,202 $ 17,241 Percentage of total revenue 6 % 11 % 2 % |
Sobi [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our distribution agreement with Sobi for TEGSEDI in North America (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 TEGSEDI revenue from our distribution agreement with Sobi in North America $ 2,646 $ 4,004 $ 7,443 Percentage of total revenue Less than 1% 1 % 1 % |
Alnylam [Member] | |
Collaborative Arrangements and Licensing Agreements [Abstract] | |
Revenue from Collaborative Relationship | During the years ended December 31, 2023, 2022 and 2021, we earned the following revenue from our relationship with Alnylam (in thousands, except percentage amounts): Year Ended December 31, 2023 2022 2021 Revenue from our relationship with Alnylam $ 28,426 $ 21,389 $ — Percentage of total revenue 4 % 4 % 0 % |
Investments (Tables)
Investments (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Investments [Abstract] | |
Contract Maturity of Available-for-Sale Securities | The following table summarizes the contract maturity of the available-for-sale securities we held as of December 31, 2023: One year 68 % After one year two years 24 % After two years three and a half years 8 % Total 100 % |
Summary of Investments | The following is a summary of our investments (in thousands): Amortized Gross Unrealized Estimated December 31, 2023 Cost Gains Losses Fair Value Available-for-sale securities: Corporate debt securities (1) $ 559,967 $ 157 $ (2,625 ) $ 557,499 Debt securities issued by U.S. government agencies 224,711 64 (611 ) 224,164 Debt securities issued by the U.S. Treasury (1) 513,784 152 (1,889 ) 512,047 Debt securities issued by states of the U.S. and political subdivisions of the states 17,757 42 (113 ) 17,686 Total securities with a maturity of one year or less 1,316,219 415 (5,238 ) 1,311,396 Corporate debt securities 243,151 1,270 (692 ) 243,729 Debt securities issued by U.S. government agencies 110,138 547 (21 ) 110,664 Debt securities issued by the U.S. Treasury 294,873 1,239 (480 ) 295,632 Debt securities issued by states of the U.S. and political subdivisions of the states 3,466 7 (4 ) 3,469 Total securities with a maturity of more than one year 651,628 3,063 (1,197 ) 653,494 Total available-for-sale securities $ 1,967,847 $ 3,478 $ (6,435 ) $ 1,964,890 Equity securities: Publicly traded equity securities included in other current assets (2) $ 11,897 $ 236 $ (5,832 ) $ 6,301 Privately held securities included in deposits and other assets (3) 23,115 25,001 (5,125 ) 42,991 Total equity securities $ 35,012 $ 25,237 $ (10,957 ) $ 49,292 Total available-for-sale and equity securities $ 2,002,859 $ 28,715 $ (17,392 ) $ 2,014,182 Amortized Gross Unrealized Estimated December 31, 2022 Cost Gains Losses Fair Value Available-for-sale securities: Corporate debt securities (1) $ 513,790 $ 23 $ (4,365 ) $ 509,448 Debt securities issued by U.S. government agencies 133,585 — (1,829 ) 131,756 Debt securities issued by the U.S. Treasury (1) 512,655 23 (5,124 ) 507,554 Debt securities issued by states of the U.S. and political subdivisions of the states 57,484 18 (686 ) 56,816 Other municipal debt securities 6,008 — (14 ) 5,994 Total securities with a maturity of one year or less 1,223,522 64 (12,018 ) 1,211,568 Corporate debt securities 227,631 14 (10,143 ) 217,502 Debt securities issued by U.S. government agencies 34,339 — (1,040 ) 33,299 Debt securities issued by the U.S. Treasury 245,030 — (4,109 ) 240,921 Debt securities issued by states of the U.S. and political subdivisions of the states 18,314 116 (329 ) 18,101 Total securities with a maturity of more than one year 525,314 130 (15,621 ) 509,823 Total available-for-sale securities $ 1,748,836 $ 194 $ (27,639 ) $ 1,721,391 Equity securities: Publicly traded equity securities included in other current assets (2) $ 11,897 $ — $ (1,358 ) $ 10,539 Privately held equity securities included in deposits and other assets (3) 23,115 17,257 — 40,372 Total equity securities $ 35,012 $ 17,257 $ (1,358 ) $ 50,911 Total available-for-sale and equity securities $ 1,783,848 $ 17,451 $ (28,997 ) $ 1,772,302 ________________ (1) Includes investments classified as cash equivalents in our consolidated balance sheets. (2) Our publicly traded equity securities are included in other current assets. We recognize publicly traded equity securities at fair value. In the year ended December 31, 2023, we recorded a $4.2 million net unrealized loss in our consolidated statements of operations related to changes in the fair value of our investments in publicly traded companies. (3) Our privately held equity securities are included in deposits and other assets. We recognize our privately held equity securities at , we recorded a $ million net unrealized gain in our consolidated statements of operations related to changes in the fair value of our investments in privately held companies. |
Temporarily Impaired Investments | The following is a summary of our investments we considered to be temporarily impaired at (in thousands, except for number of investments): Less than 12 Months of Temporary Impairment More than 12 Months of Temporary Impairment Total Temporary Impairment Number of Investments Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Corporate debt securities 297 $ 323,708 $ (553 ) $ 178,183 $ (2,764 ) $ 501,891 $ (3,317 ) Debt securities issued by U.S. government agencies 63 199,372 (246 ) 14,777 (386 ) 214,149 (632 ) Debt securities issued by the U.S. Treasury 34 325,966 (1,031 ) 131,000 (1,338 ) 456,966 (2,369 ) Debt securities issued by states of the U.S. and political subdivisions of the states 61 8,352 (17 ) 7,888 (100 ) 16,240 (117 ) Total temporarily impaired securities 455 $ 857,398 $ (1,847 ) $ 331,848 $ (4,588 ) $ 1,189,246 $ (6,435 ) |
Fair Value Measurements (Tables
Fair Value Measurements (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Fair Value Measurements [Abstract] | |
Assets Measured at Fair Value on a Recurring Basis | The following tables present the major security types we held at December 31, 2023 and 2022 that we regularly measure and carry at fair value At December 31, 2023 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Cash equivalents (1) $ 185,424 $ 185,424 $ — Corporate debt securities (2) 801,228 — 801,228 Debt securities issued by U.S. government agencies (3) 334,828 — 334,828 Debt securities issued by the U.S. Treasury (3) 807,679 807,679 — Debt securities issued by states of the U.S. and political subdivisions of the states (3) 21,155 — 21,155 Publicly traded equity securities included in other current assets (5) 6,301 6,301 — Total $ 2,156,615 $ 999,404 $ 1,157,211 At December 31, 2022 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Cash equivalents (1) $ 211,655 $ 211,655 $ — Corporate debt securities (4) 726,950 — 726,950 Debt securities issued by U.S. government agencies (3) 165,055 — 165,055 Debt securities issued by the U.S. Treasury (3) 748,475 748,475 — Debt securities issued by states of the U.S. and political subdivisions of the states (3) 74,917 — 74,917 Other municipal debt securities (3) 5,994 — 5,994 Publicly traded equity securities included in other current assets (5) 10,539 10,539 — Total $ 1,943,585 $ 970,669 $ 972,916 ________________ (1) Included in cash and cash equivalents in our consolidated balance sheets. (2) $33.0 million was included in cash and cash equivalents, with the difference included in short-term investments in our consolidated balance sheets. (3) Included in short-term investments in our consolidated balance sheets. (4) $11.0 million was included in cash and cash equivalents, with the difference included in short-term investments in our consolidated balance sheets. (5) Included in other current assets in our consolidated balance sheets. |
Long-Term Obligations and Com_2
Long-Term Obligations and Commitments (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Long-Term Obligations and Commitments [Abstract] | |
Long-Term Obligations | The carrying value of our long-term obligations was as follows (in thousands): December 31, 2023 2022 1.75 $ 562,285 $ — 0 625,380 622,242 0.125 — 544,504 Liability related to sale of future royalties 513,736 — Lease liabilities 178,969 186,156 Mortgage debt 8,859 8,998 Other obligations 33,714 7,295 Total $ 1,922,943 $ 1,369,195 Less: current portion (8,831 ) (7,535 ) Total Long-Term Obligations $ 1,914,112 $ 1,361,660 |
Convertible Notes [Abstract] | |
Debt Maturity Schedules | Annual convertible and mortgage debt maturities, including fixed and determinable interest, at December 31, 2023 are as follows (in thousands): 2024 $ 55,298 2025 10,657 2026 643,157 2027 10,509 2028 580,277 Thereafter 8,462 Total debt and mortgage maturities $ 1,308,360 Less: Current portion included in other current liabilities (157 ) Less: Fixed and determinable interest (47,138 ) Less: Debt issuance costs (20,061 ) Total debt $ 1,241,004 |
Amounts Related to Operating Leases | Amounts related to our operating leases were as follows (dollar amounts in millions): At December 31, 2023 Right-of-use operating lease assets $ 171.9 Operating lease liabilities $ 179.0 Weighted average remaining lease term 13.0 years Weighted average discount rate 6.9 % |
Future Payments for Operating Lease Liabilities | As of December 31, 2023, the future payments for our operating lease liabilities are as follows (in thousands): Operating Leases Year ending December 31, 2024 $ 20,398 2025 20,645 2026 20,781 2027 20,800 2028 20,774 Thereafter 176,138 Total minimum lease payments 279,536 Less: Imputed interest (100,567 ) Less: Current portion (included in other current liabilities (8,094 ) Total long-term lease liabilities $ 170,875 |
Liability Related to Sale of Future Royalties | The following is a summary of our liability related to sale of future royalties for the year ended (in thousands): Proceeds from sale of future royalties $ 500,000 Royalty payments to Royalty Pharma (44,628 ) Interest expense related to sale of future royalties 68,238 Liability related to sale of future royalties as of December 31, 2023 523,610 Issuance costs related to sale of future royalties (10,434 ) Amortization of issuance costs related to sale of future royalties as of December 31, 2023 560 Net liability related to sale of future royalties as of December 31, 2023 $ 513,736 |
1.75% Notes [Member] | |
Convertible Notes [Abstract] | |
Convertible Senior Notes | At December 31, 2023, we had the following 1.75% Notes outstanding (in millions, except interest rate and price per share data): 1.75% Notes Outstanding principal balance $ 575.0 Unamortized debt issuance costs $ 12.7 Maturity date June 2028 Interest rate 1.75 % Effective interest rate 2.3 % Conversion price per share $ 53.73 Total shares of common stock subject to conversion 10.7 |
0% Notes [Member] | |
Convertible Notes [Abstract] | |
Convertible Senior Notes | At December 31, 2023, we had the following 0% Notes outstanding (in millions, except interest rate and price per share data): 0% Notes Outstanding principal balance $ 632.5 Unamortized debt issuance costs $ 7.2 Maturity date April 2026 Interest rate 0 % Effective interest rate 0.5 % Conversion price per share $ 57.84 Effective conversion price per share with call spread $ 76.39 Total shares of common stock subject to conversion 10.9 |
0.125% Notes [Member] | |
Convertible Notes [Abstract] | |
Convertible Senior Notes | At December 31, 2023, we had the following 0.125% Notes outstanding with interest payable semi-annually (in millions, except interest rate and price per share data): 0.125% Notes Outstanding principal balance $ 44.5 Unamortized debt issuance costs $ 0.2 Maturity date December 2024 Interest rate 0.125 % Effective interest rate 0.5 % Conversion price per share $ 83.28 Effective conversion price per share with call spread $ 123.38 Total shares of common stock subject to conversion, excluding shares related to 0.125 0.5 |
Stockholders' Equity (Tables)
Stockholders' Equity (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Stockholders' Equity [Abstract] | |
Stock Option Activity | The following table summarizes the stock option activity under our stock plans for the year ended December 31, 2023 (in thousands, except per share and contractual life data): Number of Shares Weighted Average Exercise Price Per Share Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31, 2022 14,970 $ 50.57 Granted 2,407 $ 38.80 Exercised (1,444 ) $ 45.06 Cancelled/forfeited/expired (1,842 ) $ 55.90 Outstanding at December 31, 2023 14,091 $ 48.43 4.74 $ 78,542 Exercisable at December 31, 2023 9,703 $ 52.24 3.20 $ 28,349 |
Restricted Stock Unit Activity | The following table summarizes the RSU activity for the year ended December 31, 2023 (in thousands, except per share data): Number of Shares Weighted Average Grant Date Fair Value Per Share Non-vested at December 31, 2022 2,766 $ 48.30 Granted 1,707 $ 40.51 Vested (1,055 ) $ 51.64 Cancelled/forfeited (179 ) $ 42.90 Non-vested at December 31, 2023 3,239 $ 43.40 |
Performance Restricted Stock Unit Activity | The following table summarizes the PRSU activity for the year ended December 31, 2023 (in thousands, except per share data): Number of Shares Weighted Average Grant Date Fair Value Per Share Non-vested at December 31, 2022 143 $ 52.59 Granted 158 $ 57.43 Vested (75 ) $ 52.43 Non-vested at December 31, 2023 226 $ 56.04 |
Stock-Based Compensation Expense | The following table summarizes stock-based compensation expense for the years ended December 31, 2023, 2022 and 2021 (in thousands): Year Ended December 31, 2023 2022 2021 Cost of sales $ 499 $ 533 $ 456 Research, development and patent 77,826 73,704 87,522 Selling, general and administrative 27,484 26,027 32,700 Total $ 105,809 $ 100,264 $ 120,678 |
Weighted-Average Assumptions for Stock Options | Employee Stock Options: Year Ended December 31, 2023 2022 2021 Risk-free interest rate 3.8 % 2.1 % 0.6 % Dividend yield 0.0 % 0.0 % 0.0 % Volatility 46.8 % 54.5 % 54.0 % Expected life 6.3 years 6.3 years 4.9 years Board of Director Stock Options: Year Ended December 31, 2023 2022 2021 Risk-free interest rate 3.8 % 2.9 % 1.2 % Dividend yield 0.0 % 0.0 % 0.0 % Volatility 52.7 % 56.2 % 55.9 % Expected life 7.7 years 7.4 years 7.3 years |
Weighted-Average Assumptions for ESPP | ESPP: Year Ended December 31, 2023 2022 2021 Risk-free interest rate 5.3 % 1.2 % 0.1 % Dividend yield 0.0 % 0.0 % 0.0 % Volatility 36.0 % 50.1 % 42.4 % Expected life 6 months 6 months 6 months |
Income Taxes (Tables)
Income Taxes (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Income Taxes [Abstract] | |
Loss Before Income Taxes | Loss before income taxes is comprised of (in thousands): Year Ended December 31, 2023 2022 2021 United States $ (334,707 ) $ (258,493 ) $ (29,966 ) Foreign 742 508 818 Loss before income taxes $ (333,965 ) $ (257,985 ) $ (29,148 ) |
Income Tax Expense (Benefit) | Our income tax expense (benefit) was as follows (in thousands): Year Ended December 31, 2023 2022 2021 Current: Federal $ 35,861 $ 10,522 $ (200 ) State (3,687 ) 1,129 (690 ) Foreign 147 86 339 Total current income tax expense (benefit) 32,321 11,737 (551 ) Deferred: Federal — — — State — — — Total deferred income tax benefit — — — Total income tax expense (benefit) $ 32,321 $ 11,737 $ (551 ) |
Reconciliation of Statutory to Effective Tax Rate | Our expense (benefit) for income taxes differs from the amount computed by applying the U.S. federal statutory rate to loss before income taxes. The sources and tax effects of the differences are as follows (in thousands): Year Ended December 31, 2023 2022 2021 Pre-tax loss $ (333,965 ) $ (257,985 ) $ (29,148 ) Statutory rate (70,133 ) 21.0 % (54,177 ) 21.0 % (6,121 ) 21.0 % State income tax net of federal benefit (22,597 ) 6.8 % (13,622 ) 5.3 % 4,278 (14.7 )% Foreign (22 ) 0.0 % (49 ) 0.0 % 143 (0.5 )% Net change in valuation allowance 175,388 (52.5 )% 104,951 (40.7 )% 2,885 (9.9 )% Loss on debt transactions — — — — 262 (0.9 )% Tax credits (67,131 ) 20.1 % (39,729 ) 15.4 % (23,198 ) 79.6 % Deferred tax true-up 4 0.0 % (20 ) 0.0 % (24 ) 0.1 % Tax rate change 1,023 (0.3 )% (3,091 ) 1.2 % 12,838 (44.0 )% Non-deductible compensation 3,814 (1.1 )% 3,023 (1.2 )% 5,085 (17.4 )% Other non-deductible items 327 (0.1 )% 57 0.0 % 84 (0.3 )% Foreign-derived intangible income benefit (7,493 ) 2.2 % — — — — Stock-based compensation 19,546 (5.9 )% 14,030 (5.4 )% 4,720 (16.2 )% Other (405 ) 0.1 % 364 (0.1 )% (1,503 ) 5.1 % Effective rate $ 32,321 (9.7 )% $ 11,737 (4.5 )% $ (551 ) 1.9 % |
Deferred Tax Assets and Liabilities | Significant components of our deferred tax assets and liabilities as of December 31, 2023 and 2022 are as follows (in thousands): Year Ended December 31, 2023 2022 Deferred Tax Assets: Net operating loss carryovers $ 77,964 $ 87,802 Tax credits 239,962 277,436 Deferred revenue 71,683 85,700 Stock-based compensation 77,468 86,983 Intangible and capital assets 104,380 104,649 Convertible debt 16,849 34,384 Capitalized research and development expenses 238,738 119,635 Long-term lease liabilities 43,718 45,612 Sale of future royalties 144,608 — Other 10,343 15,813 Total deferred tax assets $ 1,025,713 $ 858,014 Deferred Tax Liabilities: Fixed assets (4,166 ) (4,475 ) Right-of-use assets (42,007 ) (44,504 ) Other (1,910 ) (313 ) Net deferred tax asset $ 977,630 $ 808,722 Valuation allowance (977,630 ) (808,722 ) Total net deferred tax assets and liabilities $ — $ — |
Gross Unrecognized Tax Benefits | The following table summarizes our gross unrecognized tax benefits (in thousands): Year Ended December 31, 2023 2022 2021 Beginning balance of unrecognized tax benefits $ 56,567 $ 55,085 $ 54,163 Decrease for lapse of statute of limitations (14,993 ) — — Decrease for prior period tax positions (737 ) (267 ) (695 ) Increase for prior period tax positions 429 259 263 Increase for current period tax positions 2,032 1,490 1,354 Ending balance of unrecognized tax benefits $ 43,298 $ 56,567 $ 55,085 |
Fourth Quarter Financial Data_2
Fourth Quarter Financial Data (Unaudited) (Tables) | 12 Months Ended |
Dec. 31, 2023 | |
Fourth Quarter Financial Data (Unaudited) [Abstract] | |
Fourth Quarter Financial Data (Unaudited) | The following financial information reflects all normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the results of the interim periods. Summarized fourth quarter data for 2023 and 2022 are as follows (in thousands, except per share data). Three Months Ended December 31, 2023 2022 Revenue (1) $ 324,505 $ 151,890 Operating expenses (2) $ 330,627 $ 359,909 Loss from operations $ (6,122 ) $ (208,019 ) Net loss (3) $ (9,263 ) $ (52,430 ) Basic net loss per share (4) (5) $ (0.06 ) $ (0.37 ) Diluted net loss per share (4) (6) $ (0.06 ) $ (0.37 ) ________________ (1) Revenue was higher in the three months ended December 31, 2023 compared to the same period in 2022 primarily due to the $50 million milestone payment we earned from AstraZeneca when the FDA approved WAINUA for ATTRv-PN in the U.S., $36 million payment we earned when AstraZeneca licensed ION826 and revenue we recognized in the fourth quarter of 2023 from the upfront payments we received from our new collaborations with Otsuka, Roche and Novartis. (2) Operating expenses were lower in the three months ended December 31, 2023 compared to the same period in 2022 primarily due to the $80 million upfront payment we made for our collaboration with Metagenomi in the fourth quarter of 2022. (3) Our net loss for the three months ended December 31, 2022 includes the $150.1 million gain we recognized from the sale and leaseback transaction for our headquarters in Carlsbad, California. (4) We the year. (5) As discussed in Note 1, Organization and Significant Accounting Policies, (6) We incurred a net loss for the fourth quarter of 2023 and 2022. As a result, we did not include dilutive common equivalent shares in the computation of diluted net loss per share because the effect would have been anti-dilutive. |
Organization and Significant _4
Organization and Significant Accounting Policies, Contracts Receivable (Details) - Partner | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Contracts Receivable [Abstract] | ||
Period of time after billing when payment is received | 3 months | |
Contracts Receivable [Abstract] | ||
Number of significant customers | 1 | 1 |
Contracts Receivables [Member] | Credit Concentration [Member] | One Significant Customer [Member] | ||
Contracts Receivable [Abstract] | ||
Concentration percentage | 87.80% | |
Contracts Receivables [Member] | Credit Concentration [Member] | Two Significant Customers [Member] | ||
Contracts Receivable [Abstract] | ||
Concentration percentage | 82.50% |
Organization and Significant _5
Organization and Significant Accounting Policies, Deferred Revenue (Details) - USD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Deferred Revenue [Abstract] | ||
Revenue recognized from amounts in beginning deferred revenue balance | $ 78.2 | $ 73.5 |
Organization and Significant _6
Organization and Significant Accounting Policies, Research, Development and Patent Expenses (Details) - USD ($) $ in Millions | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Research, Development and Patent Expenses [Abstract] | |||
Patent expenses | $ 4.3 | $ 4.7 | $ 5.3 |
Organization and Significant _7
Organization and Significant Accounting Policies, Basic and Diluted Net Loss per Share (Details) | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2019 |
0% Notes [Member] | |||||
Basic and Diluted Net Loss Per Share [Abstract] | |||||
Interest rate on convertible senior notes | 0% | 0% | 0% | 0% | |
0.125% Notes [Member] | |||||
Basic and Diluted Net Loss Per Share [Abstract] | |||||
Interest rate on convertible senior notes | 0.125% | 0.125% | 0.125% | 0.125% | |
1.75% Notes [Member] | |||||
Basic and Diluted Net Loss Per Share [Abstract] | |||||
Interest rate on convertible senior notes | 1.75% | 1.75% |
Organization and Significant _8
Organization and Significant Accounting Policies, Stock-Based Compensation Expense (Details) | 12 Months Ended |
Dec. 31, 2023 Period shares | |
Stock Options Granted Prior to January 1, 2022 [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Award term | 7 years |
Stock Options Granted on January 1, 2022 and Thereafter [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Award term | 10 years |
RSUs [Member] | Employees [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting period | 4 years |
RSUs [Member] | Board of Directors [Member] | Granted Prior to June 2020 [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting period | 4 years |
RSUs [Member] | Board of Directors [Member] | Granted After June 2020 [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting period | 1 year |
PRSUs [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Term of Alternative Calculation | 3 years |
Measurement period for Alternative Calculation | 3 years |
PRSUs [Member] | Executive Officers [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Number of performance periods | Period | 3 |
Vesting period | 3 years |
PRSUs [Member] | Executive Officers [Member] | One-Year Period [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting period | 1 year |
PRSUs [Member] | Executive Officers [Member] | Two-Year Period [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting period | 2 years |
PRSUs [Member] | Executive Officers [Member] | Three-Year Period [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting period | 3 years |
PRSUs [Member] | Executive Officers [Member] | Granted 2020 through 2022 [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Number of units guaranteed to vest (in shares) | 0 |
PRSUs [Member] | Executive Officers [Member] | Granted 2020 through 2022 [Member] | Minimum [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Percentage of units guaranteed to vest | 0% |
PRSUs [Member] | Executive Officers [Member] | Granted 2020 through 2022 [Member] | Maximum [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Percentage of units guaranteed to vest | 150% |
PRSUs [Member] | Executive Officers [Member] | Granted 2020 through 2022 [Member] | One-Year Period [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting percentage | 33.30% |
PRSUs [Member] | Executive Officers [Member] | Granted 2020 through 2022 [Member] | Two-Year Period [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting percentage | 33.30% |
PRSUs [Member] | Executive Officers [Member] | Granted 2020 through 2022 [Member] | Three-Year Period [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting percentage | 33.30% |
PRSUs [Member] | Executive Officers [Member] | Granted in 2023 [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Vesting percentage | 100% |
Number of units guaranteed to vest (in shares) | 0 |
PRSUs [Member] | Executive Officers [Member] | Granted in 2023 [Member] | Minimum [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Percentage of units guaranteed to vest | 0% |
PRSUs [Member] | Executive Officers [Member] | Granted in 2023 [Member] | Maximum [Member] | |
Stock-Based Compensation Expense [Abstract] | |
Percentage of units guaranteed to vest | 200% |
Organization and Significant _9
Organization and Significant Accounting Policies, Cash, Cash Equivalents and Investments (Details) | Dec. 31, 2023 Company |
Cash, Cash Equivalents and Investments [Abstract] | |
Number of publicly held companies in which there is an equity ownership interest of less than 20% | 3 |
Number of privately held companies in which there is an equity ownership interest of less than 20% | 7 |
Organization and Significant_10
Organization and Significant Accounting Policies, Property, Plant and Equipment (Details) | Dec. 31, 2023 |
Computer Software, Laboratory, Manufacturing and Other Equipment [Member] | Minimum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 3 years |
Computer Software, Laboratory, Manufacturing and Other Equipment [Member] | Maximum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 10 years |
Building, Building Improvements and Building Systems [Member] | Minimum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 15 years |
Building, Building Improvements and Building Systems [Member] | Maximum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 40 years |
Land Improvements [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 20 years |
Leasehold Improvements [Member] | Minimum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 5 years |
Leasehold Improvements [Member] | Maximum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 15 years |
Furniture and Fixtures [Member] | Minimum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 5 years |
Furniture and Fixtures [Member] | Maximum [Member] | |
Property, Plant and Equipment [Abstract] | |
Estimated useful life | 10 years |
Organization and Significant_11
Organization and Significant Accounting Policies, Convertible Debt (Details) - Note | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2019 |
Convertible Debt [Abstract] | |||||
Number of outstanding convertible notes | 3 | ||||
1.75% Notes [Member] | |||||
Convertible Debt [Abstract] | |||||
Interest rate on convertible senior notes | 1.75% | 1.75% | |||
0% Notes [Member] | |||||
Convertible Debt [Abstract] | |||||
Interest rate on convertible senior notes | 0% | 0% | 0% | 0% | |
0.125% Notes [Member] | |||||
Convertible Debt [Abstract] | |||||
Interest rate on convertible senior notes | 0.125% | 0.125% | 0.125% | 0.125% |
Organization and Significant_12
Organization and Significant Accounting Policies, Call Spread (Details) | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2019 |
0% Notes [Member] | |||||
Call Spread [Abstract] | |||||
Interest rate on convertible senior notes | 0% | 0% | 0% | 0% | |
0.125% Notes [Member] | |||||
Call Spread [Abstract] | |||||
Interest rate on convertible senior notes | 0.125% | 0.125% | 0.125% | 0.125% |
Organization and Significant_13
Organization and Significant Accounting Policies, Segment Information (Details) | 12 Months Ended |
Dec. 31, 2023 Segment | |
Segment Information [Abstract] | |
Number of operating segments | 1 |
Supplemental Financial Data, In
Supplemental Financial Data, Inventories (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Inventory [Abstract] | ||
Raw materials | $ 22,794 | $ 19,760 |
Work in process | 5,477 | 2,109 |
Finished goods | 154 | 164 |
Total inventory | 28,425 | 22,033 |
Clinical [Member] | ||
Inventory [Abstract] | ||
Raw materials | 20,985 | 17,061 |
Commercial [Member] | ||
Inventory [Abstract] | ||
Raw materials | $ 1,809 | $ 2,699 |
Supplemental Financial Data, Pr
Supplemental Financial Data, Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Property, Plant and Equipment [Abstract] | ||
Less accumulated depreciation | $ (96,759) | $ (87,716) |
Property, plant and equipment, net | 71,043 | 74,294 |
Property, Plant and Equipment, Excluding Land [Member] | ||
Property, Plant and Equipment [Abstract] | ||
Property, plant and equipment | 159,233 | 153,441 |
Property, plant and equipment, net | 62,474 | 65,725 |
Computer Software, Laboratory, Manufacturing and Other Equipment [Member] | ||
Property, Plant and Equipment [Abstract] | ||
Property, plant and equipment | 79,885 | 74,351 |
Building, Building Improvements and Building Systems [Member] | ||
Property, Plant and Equipment [Abstract] | ||
Property, plant and equipment | 41,228 | 41,158 |
Leasehold Improvements [Member] | ||
Property, Plant and Equipment [Abstract] | ||
Property, plant and equipment | 28,276 | 28,357 |
Furniture and Fixtures [Member] | ||
Property, Plant and Equipment [Abstract] | ||
Property, plant and equipment | 9,844 | 9,575 |
Land [Member] | ||
Property, Plant and Equipment [Abstract] | ||
Property, plant and equipment | $ 8,569 | $ 8,569 |
Supplemental Financial Data, Ac
Supplemental Financial Data, Accrued Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 |
Accrued Liabilities [Abstract] | ||
Clinical expenses | $ 105,967 | $ 116,460 |
In-licensing expenses | 7,454 | 7,945 |
Commercial expenses | 4,875 | 3,498 |
Other miscellaneous expenses | 29,598 | 12,198 |
Total accrued liabilities | $ 147,894 | $ 140,101 |
Revenues (Details)
Revenues (Details) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) Component PerformanceObligation | |
Revenues [Abstract] | |||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 |
WAINUA (Eplontersen) Collaboration with AstraZeneca [Member] | |||
Revenues [Abstract] | |||
Revenue | $ 20,000 | $ 200,000 | |
Number of material components | Component | 4 | ||
Number of separate performance obligations | PerformanceObligation | 1 | ||
Transaction price | $ 200,000 | ||
Percentage of costs associated with ongoing global Phase 3 development program paid by AstraZeneca | 55% | ||
Commercial Revenue [Member] | |||
Revenues [Abstract] | |||
Revenue | $ 308,591 | 303,358 | 342,395 |
SPINRAZA Royalties [Member] | |||
Revenues [Abstract] | |||
Revenue | 240,379 | 242,314 | 267,776 |
Other Commercial Revenue [Member] | |||
Revenues [Abstract] | |||
Revenue | 68,212 | 61,044 | 74,619 |
TEGSEDI and WAYLIVRA Revenue, Net [Member] | |||
Revenues [Abstract] | |||
Revenue | 34,913 | 30,051 | 55,500 |
Licensing and Other Royalty Revenue [Member] | |||
Revenues [Abstract] | |||
Revenue | 33,299 | 30,993 | 19,119 |
Research and Development Revenue [Member] | |||
Revenues [Abstract] | |||
Revenue | 479,056 | 284,009 | 468,061 |
Collaborative Agreement Revenue [Member] | |||
Revenues [Abstract] | |||
Revenue | 352,657 | 207,222 | 468,061 |
WAINUA Joint Development Revenue [Member] | |||
Revenues [Abstract] | |||
Revenue | $ 126,399 | $ 76,787 | $ 0 |
Collaborative Arrangements an_3
Collaborative Arrangements and Licensing Agreements, Biogen (Details) $ in Thousands | 3 Months Ended | 12 Months Ended | ||||||||||
Dec. 31, 2023 USD ($) Medicine | Jun. 30, 2018 USD ($) | Dec. 31, 2023 USD ($) Medicine | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) PerformanceObligation Program | Jan. 31, 2023 USD ($) | Apr. 30, 2018 USD ($) PerformanceObligation | Sep. 30, 2013 USD ($) PerformanceObligation | |
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 | |||||||||
SPINRAZA Royalties [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Revenue | 240,379 | 242,314 | 267,776 | |||||||||
R&D Revenue [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Revenue | 479,056 | 284,009 | 468,061 | |||||||||
SPINRAZA [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Maximum amount of annual sales on which royalty payments are paid | $ 1,500,000 | $ 1,500,000 | $ 1,500,000 | |||||||||
SPINRAZA [Member] | Minimum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Percentage of royalty payments paid to Royalty Pharma on annual sales of medicine | 25% | 25% | 25% | |||||||||
Maximum royalty payments made before royalty interest reverts back | $ 475,000 | $ 475,000 | $ 475,000 | |||||||||
SPINRAZA [Member] | Maximum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Percentage of royalty payments paid to Royalty Pharma on annual sales of medicine | 45% | 45% | 45% | |||||||||
Maximum royalty payments made before royalty interest reverts back | $ 550,000 | $ 550,000 | $ 550,000 | |||||||||
Biogen [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Revenue | 350,146 | 366,696 | $ 428,784 | |||||||||
Deferred revenue | 307,400 | $ 307,400 | $ 351,200 | |||||||||
Biogen [Member] | Revenue [Member] | Strategic Partner [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Concentration percentage | 44% | 62% | 53% | |||||||||
Biogen [Member] | Maximum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative payments received | 3,800,000 | $ 3,800,000 | ||||||||||
SPINRAZA [Member] | Minimum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative revenue earned | 2,100,000 | $ 2,100,000 | ||||||||||
Royalty percentage received on net sales of medicine | 11% | |||||||||||
SPINRAZA [Member] | Maximum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Royalty percentage received on net sales of medicine | 15% | |||||||||||
SPINRAZA [Member] | SPINRAZA Royalties [Member] | Minimum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative revenue earned | 1,600,000 | $ 1,600,000 | ||||||||||
SPINRAZA [Member] | R&D Revenue [Member] | Minimum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative revenue earned | 425,000 | 425,000 | ||||||||||
New Antisense Medicines for the Treatment of SMA [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative payments received | 85,000 | $ 85,000 | ||||||||||
Royalty percentage received on net sales of medicine | 20% | |||||||||||
Upfront payment received | $ 25,000 | |||||||||||
Next payment to be achieved | 45,000 | $ 45,000 | ||||||||||
New Antisense Medicines for the Treatment of SMA [Member] | ION306 [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Maximum amount of payments receivable over term of collaboration | 555,000 | 555,000 | ||||||||||
Maximum amount of development milestone payments over term of collaboration | 45,000 | 45,000 | ||||||||||
Maximum amount of regulatory milestone payments over term of collaboration | 110,000 | 110,000 | ||||||||||
Maximum amount of sales milestone payments over term of collaboration | 400,000 | 400,000 | ||||||||||
Revenue | $ 60,000 | |||||||||||
2018 Strategic Neurology [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative payments received | 1,100,000 | $ 1,100,000 | ||||||||||
Royalty percentage received on net sales of medicine | 20% | |||||||||||
Upfront payment received | $ 375,000 | |||||||||||
Number of separate performance obligations | PerformanceObligation | 1 | |||||||||||
Transaction price | $ 552,000 | |||||||||||
Term of collaboration agreement | 10 years | |||||||||||
Upfront payment received, including purchase of stock | 1,000,000 | |||||||||||
Proceeds from issuance of common stock | $ 625,000 | |||||||||||
Percentage cash premium paid on shares purchased | 25% | |||||||||||
Maximum amount of payments receivable per medicine over term of collaboration | 270,000 | $ 270,000 | ||||||||||
Maximum amount of license fees per medicine over term of collaboration | 15,000 | 15,000 | ||||||||||
Maximum amount of development milestone payments per medicine over term of collaboration | 105,000 | 105,000 | ||||||||||
Maximum amount of regulatory milestone payments per medicine over term of collaboration | 150,000 | 150,000 | ||||||||||
Next payment to be achieved | 15,000 | 15,000 | ||||||||||
Premium paid on shares purchased | $ 177,000 | |||||||||||
Cumulative payments included in transaction price for performance obligation | 623,000 | 623,000 | ||||||||||
Milestone payments achieved and included in transaction price for performance obligation | 7,500 | |||||||||||
2013 Strategic Neurology [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative payments received | 325,000 | 325,000 | ||||||||||
Upfront payment received | $ 100,000 | |||||||||||
Number of separate performance obligations | PerformanceObligation | 1 | |||||||||||
Transaction price | $ 100,000 | |||||||||||
Next payment to be achieved | $ 70,000 | $ 70,000 | ||||||||||
Cumulative payments included in transaction price for performance obligation | $ 145,000 | |||||||||||
Number of medicines currently being advanced | Medicine | 4 | 4 | ||||||||||
Maximum amount of payments receivable per antisense molecule over term of collaboration | $ 260,000 | $ 260,000 | ||||||||||
Maximum amount of license fees per antisense molecule over term of collaboration | 70,000 | 70,000 | ||||||||||
Maximum amount of development milestone payments per antisense molecule over term of collaboration | 60,000 | 60,000 | ||||||||||
Maximum amount of regulatory milestone payments per antisense molecule over term of collaboration | $ 130,000 | 130,000 | ||||||||||
Revenue | $ 16,000 | |||||||||||
2013 Strategic Neurology [Member] | Medicines for Parkinson's Disease [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Number of medicines currently being advanced | Medicine | 1 | 1 | ||||||||||
2013 Strategic Neurology [Member] | Medicines for ALS [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Number of medicines currently being advanced | Medicine | 2 | 2 | ||||||||||
2013 Strategic Neurology [Member] | Medicines for Multiple System Atrophy [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Number of medicines currently being advanced | Medicine | 1 | 1 | ||||||||||
2013 Strategic Neurology [Member] | QALSODY [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Maximum amount of payments receivable over term of collaboration | $ 110,000 | $ 110,000 | ||||||||||
Maximum amount of license fees over term of collaboration | 35,000 | 35,000 | ||||||||||
Maximum amount of development milestone payments over term of collaboration | 18,000 | 18,000 | ||||||||||
Maximum amount of regulatory milestone payments over term of collaboration | 55,000 | 55,000 | ||||||||||
Next payment to be achieved | 20,000 | $ 20,000 | ||||||||||
2013 Strategic Neurology [Member] | QALSODY [Member] | Minimum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Royalty percentage received on net sales of medicine | 11% | |||||||||||
2013 Strategic Neurology [Member] | QALSODY [Member] | Maximum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Royalty percentage received on net sales of medicine | 15% | |||||||||||
2012 Neurology [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Upfront payment received | $ 30,000 | |||||||||||
Maximum amount of payments receivable over term of collaboration | 210,000 | $ 210,000 | ||||||||||
Maximum amount of license fees over term of collaboration | 70,000 | 70,000 | ||||||||||
Maximum amount of development milestone payments over term of collaboration | 10,000 | 10,000 | ||||||||||
Maximum amount of regulatory milestone payments over term of collaboration | 130,000 | 130,000 | ||||||||||
Number of separate performance obligations | PerformanceObligation | 2 | |||||||||||
Next payment to be achieved | 70,000 | 70,000 | ||||||||||
Number of programs under which medicines are to be developed and commercialized | Program | 2 | |||||||||||
2012 Neurology [Member] | Minimum [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative payments received | 230,000 | 230,000 | ||||||||||
2012 Neurology [Member] | IONIS-MAPT [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative payments included in transaction price for performance obligation | 57,000 | 57,000 | ||||||||||
Milestone payments achieved and included in transaction price for performance obligation | $ 19,500 | |||||||||||
Revenue | $ 10,000 | |||||||||||
2012 Neurology [Member] | ION582 [Member] | ||||||||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||||||||
Cumulative payments included in transaction price for performance obligation | $ 68,000 | 68,000 | ||||||||||
Milestone payments achieved and included in transaction price for performance obligation | $ 39,000 |
Collaborative Arrangements an_4
Collaborative Arrangements and Licensing Agreements, AstraZeneca (Details) $ in Thousands | 12 Months Ended | ||||
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) Component PerformanceObligation | Dec. 31, 2015 USD ($) | Jul. 31, 2015 USD ($) PerformanceObligation | |
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 | ||
AstraZeneca [Member] | |||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Revenue | 202,236 | 79,160 | $ 254,591 | ||
Deferred revenue | $ 0 | $ 0 | |||
AstraZeneca [Member] | Revenue [Member] | Strategic Partner [Member] | |||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Concentration percentage | 26% | 13% | 31% | ||
WAINUA (Eplontersen) [Member] | |||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Maximum amount of payments receivable over term of collaboration | $ 3,600,000 | ||||
Upfront payment received | $ 200,000 | ||||
Maximum amount of license fees over term of collaboration | 20,000 | ||||
Maximum amount of development milestone payments over term of collaboration | 485,000 | ||||
Maximum amount of sales milestone payments over term of collaboration | $ 2,900,000 | ||||
Royalty percentage received on sales of medicine in U.S. | 20% | ||||
Number of material components | Component | 4 | ||||
Number of separate performance obligations | PerformanceObligation | 1 | ||||
Transaction price | $ 200,000 | ||||
Percentage of costs associated with ongoing global Phase 3 development program paid by AstraZeneca | 55% | ||||
Next payment to be achieved | $ 30,000 | ||||
Revenue | 20,000 | $ 200,000 | |||
WAINUA (Eplontersen) [Member] | Maximum [Member] | |||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Cumulative payments received | 360,000 | ||||
WAINUA (Eplontersen) [Member] | ATTRv-PN [Member] | |||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Revenue | 50,000 | ||||
Cardiovascular, Renal and Metabolic Diseases [Member] | |||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Maximum amount of payments receivable over term of collaboration | 3,400,000 | ||||
Upfront payment received | $ 65,000 | ||||
Maximum amount of license fees over term of collaboration | 290,000 | ||||
Maximum amount of development milestone payments over term of collaboration | 865,000 | ||||
Maximum amount of regulatory milestone payments over term of collaboration | 2,200,000 | ||||
Number of separate performance obligations | PerformanceObligation | 1 | ||||
Transaction price | $ 65,000 | ||||
Next payment to be achieved | 10,000 | ||||
Cumulative payments included in transaction price for performance obligation | 90,000 | ||||
Revenue | 36,000 | ||||
Cardiovascular, Renal and Metabolic Diseases [Member] | Minimum [Member] | |||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||
Cumulative payments received | $ 300,000 |
Collaborative Arrangements an_5
Collaborative Arrangements and Licensing Agreements, GSK (Details) - USD ($) $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2010 | |
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 | |
GSK [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Upfront payment received | $ 35,000 | |||
Maximum amount of payments receivable over term of collaboration | 260,000 | |||
Maximum amount of license fees over term of collaboration | 25,000 | |||
Maximum amount of development milestone payments over term of collaboration | 42,500 | |||
Maximum amount of regulatory milestone payments over term of collaboration | 120,000 | |||
Maximum amount of sales milestone payments over term of collaboration | 70,000 | |||
Next payment to be achieved | 15,000 | |||
Revenue | 15,000 | 0 | $ 0 | |
Deferred revenue | $ 0 | $ 0 | ||
GSK [Member] | Revenue [Member] | Strategic Partner [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Concentration percentage | 2% | 0% | 0% | |
GSK [Member] | Minimum [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Cumulative payments received | $ 105,000 |
Collaborative Arrangements an_6
Collaborative Arrangements and Licensing Agreements, Novartis (Details) $ in Thousands, shares in Millions | 3 Months Ended | 12 Months Ended | |||||
Dec. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2017 USD ($) shares | Aug. 31, 2023 PerformanceObligation | Mar. 31, 2017 PerformanceObligation | |
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 | ||||
Pelacarsen API [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Percentage of royalty payments paid to Royalty Pharma on annual sales of medicine | 25% | 25% | |||||
Pelacarsen [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Maximum amount of payments receivable over term of collaboration | $ 900,000 | $ 900,000 | |||||
Upfront payment received | $ 75,000 | ||||||
Maximum amount of license fees over term of collaboration | 150,000 | 150,000 | |||||
Maximum amount of development milestone payments over term of collaboration | 25,000 | 25,000 | |||||
Maximum amount of regulatory milestone payments over term of collaboration | 290,000 | 290,000 | |||||
Maximum amount of sales milestone payments over term of collaboration | 360,000 | 360,000 | |||||
Cumulative payments received | 275,000 | 275,000 | |||||
Next payment to be achieved | 50,000 | 50,000 | |||||
Shares issued (in shares) | shares | 1.6 | ||||||
Proceeds from sale of common stock | $ 100,000 | ||||||
Number of separate performance obligations | PerformanceObligation | 4 | ||||||
Transaction price | 108,400 | ||||||
Premium received on shares issued | 28,400 | ||||||
Potential premium received if common stock was purchased in the future | 5,000 | ||||||
Revenue | 30,194 | 237 | $ 25,526 | ||||
Deferred revenue | 30,000 | $ 30,000 | $ 0 | ||||
Pelacarsen [Member] | Revenue [Member] | Strategic Partner [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Concentration percentage | 4% | 3% | |||||
Pelacarsen [Member] | Maximum [Member] | Revenue [Member] | Strategic Partner [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Concentration percentage | 1% | ||||||
Pelacarsen [Member] | R&D Services for Pelacarsen [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Transaction price | 64,000 | ||||||
Pelacarsen [Member] | R&D Services for Olezarsen [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Transaction price | 40,100 | ||||||
Pelacarsen [Member] | Pelacarsen API [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Royalty percentage received on net sales of medicine | 20% | ||||||
Transaction price | 1,500 | ||||||
Pelacarsen [Member] | Olezarsen API [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Transaction price | $ 2,800 | ||||||
Lp(a)-Driven Cardiovascular Disease [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Maximum amount of payments receivable over term of collaboration | 730,000 | $ 730,000 | |||||
Upfront payment received | 60,000 | ||||||
Maximum amount of development milestone payments over term of collaboration | 155,000 | 155,000 | |||||
Maximum amount of regulatory milestone payments over term of collaboration | 105,000 | 105,000 | |||||
Maximum amount of sales milestone payments over term of collaboration | 410,000 | 410,000 | |||||
Cumulative payments received | 60,000 | 60,000 | |||||
Next payment to be achieved | 5,000 | 5,000 | |||||
Number of separate performance obligations | PerformanceObligation | 1 | ||||||
Transaction price | $ 60,000 | $ 60,000 | |||||
Lp(a)-Driven Cardiovascular Disease [Member] | Minimum [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Royalty percentage received on net sales of medicine | 10% | ||||||
Lp(a)-Driven Cardiovascular Disease [Member] | Maximum [Member] | |||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||||||
Royalty percentage received on net sales of medicine | 20% |
Collaborative Arrangements an_7
Collaborative Arrangements and Licensing Agreements, Roche (Details) $ in Thousands | 3 Months Ended | 12 Months Ended | ||||
Dec. 31, 2023 USD ($) PerformanceObligation Program Indication | Dec. 31, 2023 USD ($) PerformanceObligation Program Indication | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Oct. 31, 2018 PerformanceObligation | Dec. 31, 2013 USD ($) PerformanceObligation | |
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 | |||
Roche [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Revenue | 48,838 | 67,202 | $ 17,241 | |||
Deferred revenue | $ 36,700 | $ 36,700 | $ 22,400 | |||
Roche [Member] | Revenue [Member] | Strategic Partner [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Concentration percentage | 6% | 11% | 2% | |||
HD [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Maximum amount of payments receivable over term of collaboration | 395,000 | $ 395,000 | ||||
Maximum amount of upfront payments over term of collaboration | 30,000 | 30,000 | ||||
Maximum amount of license fees over term of collaboration | 45,000 | 45,000 | ||||
Maximum amount of development milestone payments over term of collaboration | 70,000 | 70,000 | ||||
Maximum amount of regulatory milestone payments over term of collaboration | 170,000 | 170,000 | ||||
Maximum amount of sales milestone payments over term of collaboration | 80,000 | 80,000 | ||||
Maximum amount of milestone payments for each additional medicine successfully developed over term of collaboration | 136,500 | 136,500 | ||||
Cumulative payments received | 150,000 | 150,000 | ||||
Next payment to be achieved | 17,500 | 17,500 | ||||
Number of separate performance obligations | PerformanceObligation | 1 | |||||
Transaction price | $ 30,000 | |||||
IONIS-FB-L for Complement-Mediated Diseases [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Maximum amount of payments receivable over term of collaboration | 810,000 | 810,000 | ||||
Maximum amount of upfront payments over term of collaboration | 75,000 | 75,000 | ||||
Maximum amount of license fees over term of collaboration | 35,000 | 35,000 | ||||
Maximum amount of development milestone payments over term of collaboration | 145,000 | 145,000 | ||||
Maximum amount of regulatory milestone payments over term of collaboration | 279,000 | 279,000 | ||||
Maximum amount of sales milestone payments over term of collaboration | 280,000 | 280,000 | ||||
Cumulative payments received | 135,000 | 135,000 | ||||
Next payment to be achieved | 90,000 | 90,000 | ||||
Number of separate performance obligations | PerformanceObligation | 1 | |||||
Cumulative payments included in transaction price for performance obligation | $ 97,000 | $ 97,000 | ||||
Milestone payments achieved and included in transaction price for performance obligation | $ 22,000 | |||||
Number of disease indications | Indication | 2 | 2 | ||||
Royalty percentage received on net sales of medicine | 20% | |||||
Revenue | $ 35,000 | |||||
IONIS-FB-L for Complement-Mediated Diseases [Member] | GA [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Number of disease indications | Indication | 1 | 1 | ||||
IONIS-FB-L for Complement-Mediated Diseases [Member] | IgAN [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Number of disease indications | Indication | 1 | 1 | ||||
RNA-targeted Programs for AD and HD [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Maximum amount of payments receivable over term of collaboration | $ 625,000 | $ 625,000 | ||||
Upfront payment received | 60,000 | |||||
Maximum amount of development milestone payments over term of collaboration | 167,000 | 167,000 | ||||
Maximum amount of sales milestone payments over term of collaboration | 398,000 | 398,000 | ||||
Cumulative payments received | 60,000 | 60,000 | ||||
Next payment to be achieved | $ 7,500 | $ 7,500 | ||||
Number of early-stage programs | Program | 2 | 2 | ||||
Number of separate performance obligations | PerformanceObligation | 2 | 2 | ||||
Transaction price | $ 60,000 | $ 60,000 | ||||
RNA-targeted Programs for AD and HD [Member] | R&D Services for Investigational Medicine for AD [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Transaction price | 45,000 | 45,000 | ||||
RNA-targeted Programs for AD and HD [Member] | R&D Services for Investigational Medicine for HD [Member] | ||||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||||
Transaction price | $ 15,000 | $ 15,000 |
Collaborative Arrangements an_8
Collaborative Arrangements and Licensing Agreements, Otsuka (Details) $ in Thousands | 3 Months Ended | 12 Months Ended | ||
Dec. 31, 2023 USD ($) PerformanceObligation | Dec. 31, 2023 USD ($) PerformanceObligation | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | |
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 | |
Otsuka [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Maximum amount of payments receivable over term of collaboration | $ 185,000 | 185,000 | ||
Upfront payment received | 65,000 | |||
Maximum amount of regulatory milestone payments over term of collaboration | 50,000 | 50,000 | ||
Maximum amount of sales milestone payments over term of collaboration | 70,000 | 70,000 | ||
Cumulative payments received | 65,000 | 65,000 | ||
Next payment to be achieved | $ 15,000 | $ 15,000 | ||
Number of separate performance obligations | PerformanceObligation | 2 | 2 | ||
Transaction price | $ 65,000 | $ 65,000 | ||
Revenue | 56,480 | |||
Deferred revenue | 8,500 | $ 8,500 | ||
Otsuka [Member] | Revenue [Member] | Strategic Partner [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Concentration percentage | 7% | |||
Otsuka [Member] | Minimum [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Royalty percentage received on net sales of medicine | 20% | |||
Otsuka [Member] | Maximum [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Royalty percentage received on net sales of medicine | 30% | |||
Otsuka [Member] | License of Donidalorsen [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Transaction price | 56,000 | $ 56,000 | ||
Otsuka [Member] | R&D Services for Donidalorsen [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Transaction price | $ 9,000 | $ 9,000 |
Collaborative Arrangements an_9
Collaborative Arrangements and Licensing Agreements, PTC Therapeutics (Details) | 12 Months Ended |
Dec. 31, 2023 | |
PTC Therapeutics [Member] | |
Collaborative Arrangement and Licensing Agreement [Abstract] | |
Royalty percentage received on net sales of medicine | 20% |
Collaborative Arrangements a_10
Collaborative Arrangements and Licensing Agreements, Sobi (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Collaborative Arrangement and Licensing Agreement [Abstract] | |||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 |
Sobi [Member] | |||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||
Revenue | $ 2,646 | $ 4,004 | $ 7,443 |
Sobi [Member] | Revenue [Member] | Strategic Partner [Member] | |||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||
Concentration percentage | 1% | 1% | |
Sobi [Member] | Maximum [Member] | Revenue [Member] | Strategic Partner [Member] | |||
Collaborative Arrangement and Licensing Agreement [Abstract] | |||
Concentration percentage | 1% |
Collaborative Arrangements a_11
Collaborative Arrangements and Licensing Agreements, Bicycle Therapeutics (Details) - Bicycle License Agreement [Member] - USD ($) $ in Millions | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2021 | |
Collaborative Arrangement and Licensing Agreement [Abstract] | ||
Payment of license fee | $ 42 | |
Trading restriction period under lock up agreement | 1 year | |
Equity investment | 7.2 | |
R&D expense | $ 34.8 |
Collaborative Arrangements a_12
Collaborative Arrangements and Licensing Agreements, Metagenomi (Details) - Metagenomi [Member] $ in Millions | 12 Months Ended |
Dec. 31, 2022 USD ($) Target | |
Collaborative Arrangement and Licensing Agreement [Abstract] | |
Number of targets to be researched, developed and commercialized | Target | 4 |
Number of additional targets to be researched, developed and commercialized | Target | 4 |
Payment to license technology | $ | $ 80 |
Research and development expense | $ | $ 80 |
Collaborative Arrangements a_13
Collaborative Arrangements and Licensing Agreements, Alnylam Pharmaceuticals, Inc. (Details) $ in Thousands | 12 Months Ended | |||
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2015 Program Target | |
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Revenue | $ 787,647 | $ 587,367 | $ 810,456 | |
R&D Revenue [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Revenue | 479,056 | 284,009 | $ 468,061 | |
Alnylam [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Number of therapeutic programs | Program | 4 | |||
Number of therapeutic targets granted to Ionis | Target | 4 | |||
Number of unnamed therapeutic targets granted to Ionis | Target | 2 | |||
Number of therapeutic targets granted by Ionis | Target | 4 | |||
Deferred revenue | $ 0 | $ 0 | ||
Alnylam [Member] | Revenue [Member] | Strategic Partner [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Concentration percentage | 4% | 4% | 0% | |
Alnylam [Member] | R&D Revenue [Member] | ||||
Collaborative Arrangement and Licensing Agreement [Abstract] | ||||
Revenue | $ 28,426 | $ 21,389 | $ 0 |
Investments, Contract Maturity
Investments, Contract Maturity of Available-for-Sale Securities (Details) | 12 Months Ended |
Dec. 31, 2023 | |
Contract Maturity of Available-for-Sale Securities [Abstract] | |
One year or less | 68% |
After one year but within two years | 24% |
After two years but within three and a half years | 8% |
Total | 100% |
Percentage of available-for-sale securities with a maturity of less than two years | 92% |
Maximum contract maturity period, range 1 | 1 year |
Maximum contract maturity period, range 2 | 2 years |
Maximum contract maturity period, range 3 | 3 years 6 months |
Investments, Summary of Investm
Investments, Summary of Investments (Details) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 USD ($) Company | Dec. 31, 2022 USD ($) | ||
Ownership Interests in Private and Public Companies [Abstract] | |||
Number of privately held companies in which there is an equity ownership interest of less than 20% | Company | 7 | ||
Number of publicly held companies in which there is an equity ownership interest of less than 20% | Company | 3 | ||
Available-for-sale Debt Securities with Maturity of One Year or Less [Abstract] | |||
Amortized cost | $ 1,316,219 | $ 1,223,522 | |
Gross unrealized gains | 415 | 64 | |
Gross unrealized losses | (5,238) | (12,018) | |
Estimated fair value | 1,311,396 | 1,211,568 | |
Available-for-sale Debt Securities with Maturity of More Than One Year [Abstract] | |||
Amortized cost | 651,628 | 525,314 | |
Gross unrealized gains | 3,063 | 130 | |
Gross unrealized losses | (1,197) | (15,621) | |
Estimated fair value | 653,494 | 509,823 | |
Available-for-sale Debt Securities [Abstract] | |||
Amortized cost | 1,967,847 | 1,748,836 | |
Gross unrealized gains | 3,478 | 194 | |
Gross unrealized losses | (6,435) | (27,639) | |
Estimated fair value | 1,964,890 | 1,721,391 | |
Equity Securities [Abstract] | |||
Amortized cost | 35,012 | 35,012 | |
Gross unrealized gains | 25,237 | 17,257 | |
Gross unrealized losses | (10,957) | (1,358) | |
Estimated fair value | 49,292 | 50,911 | |
Available-for-sale Debt and Equity Securities [Abstract] | |||
Amortized cost | 2,002,859 | 1,783,848 | |
Gross unrealized gains | 28,715 | 17,451 | |
Gross unrealized losses | (17,392) | (28,997) | |
Estimated fair value | 2,014,182 | 1,772,302 | |
Corporate Debt Securities [Member] | |||
Available-for-sale Debt Securities with Maturity of One Year or Less [Abstract] | |||
Amortized cost | [1] | 559,967 | 513,790 |
Gross unrealized gains | 157 | 23 | |
Gross unrealized losses | (2,625) | (4,365) | |
Estimated fair value | 557,499 | 509,448 | |
Available-for-sale Debt Securities with Maturity of More Than One Year [Abstract] | |||
Amortized cost | 243,151 | 227,631 | |
Gross unrealized gains | 1,270 | 14 | |
Gross unrealized losses | (692) | (10,143) | |
Estimated fair value | 243,729 | 217,502 | |
Debt Securities Issued by U.S. Government Agencies [Member] | |||
Available-for-sale Debt Securities with Maturity of One Year or Less [Abstract] | |||
Amortized cost | 224,711 | 133,585 | |
Gross unrealized gains | 64 | 0 | |
Gross unrealized losses | (611) | (1,829) | |
Estimated fair value | 224,164 | 131,756 | |
Available-for-sale Debt Securities with Maturity of More Than One Year [Abstract] | |||
Amortized cost | 110,138 | 34,339 | |
Gross unrealized gains | 547 | 0 | |
Gross unrealized losses | (21) | (1,040) | |
Estimated fair value | 110,664 | 33,299 | |
Debt Securities Issued by the U.S. Treasury [Member] | |||
Available-for-sale Debt Securities with Maturity of One Year or Less [Abstract] | |||
Amortized cost | [1] | 513,784 | 512,655 |
Gross unrealized gains | 152 | 23 | |
Gross unrealized losses | (1,889) | (5,124) | |
Estimated fair value | 512,047 | 507,554 | |
Available-for-sale Debt Securities with Maturity of More Than One Year [Abstract] | |||
Amortized cost | 294,873 | 245,030 | |
Gross unrealized gains | 1,239 | 0 | |
Gross unrealized losses | (480) | (4,109) | |
Estimated fair value | 295,632 | 240,921 | |
Debt Securities Issued by States of the U.S. and Political Subdivisions of the States [Member] | |||
Available-for-sale Debt Securities with Maturity of One Year or Less [Abstract] | |||
Amortized cost | 17,757 | 57,484 | |
Gross unrealized gains | 42 | 18 | |
Gross unrealized losses | (113) | (686) | |
Estimated fair value | 17,686 | 56,816 | |
Available-for-sale Debt Securities with Maturity of More Than One Year [Abstract] | |||
Amortized cost | 3,466 | 18,314 | |
Gross unrealized gains | 7 | 116 | |
Gross unrealized losses | (4) | (329) | |
Estimated fair value | 3,469 | 18,101 | |
Other Municipal Debt Securities [Member] | |||
Available-for-sale Debt Securities with Maturity of One Year or Less [Abstract] | |||
Amortized cost | 6,008 | ||
Gross unrealized gains | 0 | ||
Gross unrealized losses | (14) | ||
Estimated fair value | 5,994 | ||
Publicly Traded Equity Securities [Member] | |||
Equity Securities [Abstract] | |||
Amortized cost | [2] | 11,897 | 11,897 |
Gross unrealized gains | 236 | 0 | |
Gross unrealized losses | (5,832) | (1,358) | |
Estimated fair value | 6,301 | 10,539 | |
Available-for-sale Debt and Equity Securities [Abstract] | |||
Unrealized loss on equity securities | (4,200) | ||
Privately Held Equity Securities [Member] | |||
Equity Securities [Abstract] | |||
Amortized cost | [3] | 23,115 | 23,115 |
Gross unrealized gains | 25,001 | 17,257 | |
Gross unrealized losses | (5,125) | 0 | |
Estimated fair value | 42,991 | $ 40,372 | |
Available-for-sale Debt and Equity Securities [Abstract] | |||
Unrealized gain on equity securities | $ 2,600 | ||
[1]Includes investments classified as cash equivalents in our consolidated balance sheets.[2]Our publicly traded equity securities are included in other current assets. We recognize publicly traded equity securities at fair value. In the year ended December 31, 2023, we recorded a $4.2 million net unrealized loss in our consolidated statements of operations related to changes in the fair value of our investments in publicly traded companies. Our privately held equity securities are included in deposits and other assets. We recognize our privately held equity securities at , we recorded a $ million net unrealized gain in our consolidated statements of operations related to changes in the fair value of our investments in privately held companies. |
Investments, Investments Tempor
Investments, Investments Temporarily Impaired (Details) $ in Thousands | Dec. 31, 2023 USD ($) Investment |
Temporarily Impaired Investments [Abstract] | |
Number of investments | Investment | 455 |
Estimated Fair Value [Abstract] | |
Less than 12 months of temporary impairment | $ 857,398 |
More than 12 months of temporary impairment | 331,848 |
Total temporary impairment | 1,189,246 |
Unrealized Losses [Abstract] | |
Less than 12 months of temporary impairment | (1,847) |
More than 12 months of temporary impairment | (4,588) |
Total temporary impairment | $ (6,435) |
Corporate Debt Securities [Member] | |
Temporarily Impaired Investments [Abstract] | |
Number of investments | Investment | 297 |
Estimated Fair Value [Abstract] | |
Less than 12 months of temporary impairment | $ 323,708 |
More than 12 months of temporary impairment | 178,183 |
Total temporary impairment | 501,891 |
Unrealized Losses [Abstract] | |
Less than 12 months of temporary impairment | (553) |
More than 12 months of temporary impairment | (2,764) |
Total temporary impairment | $ (3,317) |
Debt Securities Issued by U.S. Government Agencies [Member] | |
Temporarily Impaired Investments [Abstract] | |
Number of investments | Investment | 63 |
Estimated Fair Value [Abstract] | |
Less than 12 months of temporary impairment | $ 199,372 |
More than 12 months of temporary impairment | 14,777 |
Total temporary impairment | 214,149 |
Unrealized Losses [Abstract] | |
Less than 12 months of temporary impairment | (246) |
More than 12 months of temporary impairment | (386) |
Total temporary impairment | $ (632) |
Debt Securities Issued by the U.S. Treasury [Member] | |
Temporarily Impaired Investments [Abstract] | |
Number of investments | Investment | 34 |
Estimated Fair Value [Abstract] | |
Less than 12 months of temporary impairment | $ 325,966 |
More than 12 months of temporary impairment | 131,000 |
Total temporary impairment | 456,966 |
Unrealized Losses [Abstract] | |
Less than 12 months of temporary impairment | (1,031) |
More than 12 months of temporary impairment | (1,338) |
Total temporary impairment | $ (2,369) |
Debt Securities Issued by States of the U.S. and Political Subdivisions of the States [Member] | |
Temporarily Impaired Investments [Abstract] | |
Number of investments | Investment | 61 |
Estimated Fair Value [Abstract] | |
Less than 12 months of temporary impairment | $ 8,352 |
More than 12 months of temporary impairment | 7,888 |
Total temporary impairment | 16,240 |
Unrealized Losses [Abstract] | |
Less than 12 months of temporary impairment | (17) |
More than 12 months of temporary impairment | (100) |
Total temporary impairment | $ (117) |
Fair Value Measurements (Detail
Fair Value Measurements (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2019 | |||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | $ 1,964,890 | $ 1,721,391 | ||||||
Equity securities | $ 49,292 | $ 50,911 | ||||||
1.75% Notes [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Interest rate on convertible senior notes | 1.75% | 1.75% | ||||||
0.125% Notes [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Interest rate on convertible senior notes | 0.125% | 0.125% | 0.125% | 0.125% | ||||
0% Notes [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Interest rate on convertible senior notes | 0% | 0% | 0% | 0% | ||||
Publicly Traded Equity Securities [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Equity securities | $ 6,301 | $ 10,539 | ||||||
Recurring Basis [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Cash equivalents | [1] | 185,424 | 211,655 | |||||
Total | 2,156,615 | 1,943,585 | ||||||
Recurring Basis [Member] | Corporate Debt Securities [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 801,228 | [2] | 726,950 | [3] | ||||
Recurring Basis [Member] | Corporate Debt Securities [Member] | Cash and Cash Equivalents [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 33,000 | 11,000 | ||||||
Recurring Basis [Member] | Debt Securities Issued by U.S. Government Agencies [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | [4] | 334,828 | 165,055 | |||||
Recurring Basis [Member] | Debt Securities Issued by the U.S. Treasury [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | [4] | 807,679 | 748,475 | |||||
Recurring Basis [Member] | Debt Securities Issued by States of the U.S. and Political Subdivisions of the States [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | [4] | 21,155 | 74,917 | |||||
Recurring Basis [Member] | Other Municipal Debt Securities [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | [4] | 5,994 | ||||||
Recurring Basis [Member] | Publicly Traded Equity Securities [Member] | Other Current Assets [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Equity securities | [5] | 6,301 | 10,539 | |||||
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Cash equivalents | 185,424 | 211,655 | ||||||
Total | 999,404 | 970,669 | ||||||
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Corporate Debt Securities [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 0 | 0 | ||||||
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Debt Securities Issued by U.S. Government Agencies [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 0 | 0 | ||||||
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Debt Securities Issued by the U.S. Treasury [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 807,679 | 748,475 | ||||||
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Debt Securities Issued by States of the U.S. and Political Subdivisions of the States [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 0 | 0 | ||||||
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Other Municipal Debt Securities [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 0 | |||||||
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member] | Publicly Traded Equity Securities [Member] | Other Current Assets [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Equity securities | 6,301 | 10,539 | ||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Cash equivalents | 0 | 0 | ||||||
Total | 1,157,211 | 972,916 | ||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | 1.75% Notes [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Convertible notes | 661,100 | |||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | 0.125% Notes [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Convertible notes | 42,400 | |||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | 0% Notes [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Convertible notes | 667,800 | |||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 801,228 | 726,950 | ||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Debt Securities Issued by U.S. Government Agencies [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 334,828 | 165,055 | ||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Debt Securities Issued by the U.S. Treasury [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 0 | 0 | ||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Debt Securities Issued by States of the U.S. and Political Subdivisions of the States [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 21,155 | 74,917 | ||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Municipal Debt Securities [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Available-for-sale securities | 5,994 | |||||||
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Publicly Traded Equity Securities [Member] | Other Current Assets [Member] | ||||||||
Fair Value Measurements [Abstract] | ||||||||
Equity securities | $ 0 | $ 0 | ||||||
[1]Included in cash and cash equivalents in our consolidated balance sheets.[2]$33.0 million was included in cash and cash equivalents, with the difference included in short-term investments in our consolidated balance sheets.[3]$11.0 million was included in cash and cash equivalents, with the difference included in short-term investments in our consolidated balance sheets.[4]Included in short-term investments in our consolidated balance sheets.[5]Included in other current assets in our consolidated balance sheets. |
Long-Term Obligations and Com_3
Long-Term Obligations and Commitments, Long-Term Obligations (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 30, 2021 | Dec. 31, 2019 |
Long-Term Obligations [Abstract] | |||||
Liability related to sale of future royalties | $ 513,736 | $ 0 | |||
Lease liabilities | 178,969 | 186,156 | |||
Mortgage debt | 8,859 | 8,998 | |||
Other obligations | 33,714 | 7,295 | |||
Total | 1,922,943 | 1,369,195 | |||
Less: current portion | (8,831) | (7,535) | |||
Total Long-Term Obligations | 1,914,112 | 1,361,660 | |||
1.75 Percent Convertible Senior Notes [Member] | |||||
Long-Term Obligations [Abstract] | |||||
Convertible senior notes | $ 562,285 | $ 0 | |||
Interest rate on convertible senior notes | 1.75% | 1.75% | |||
0 Percent Convertible Senior Notes [Member] | |||||
Long-Term Obligations [Abstract] | |||||
Convertible senior notes | $ 625,380 | $ 622,242 | |||
Interest rate on convertible senior notes | 0% | 0% | 0% | 0% | |
0.125 Percent Convertible Senior Notes [Member] | |||||
Long-Term Obligations [Abstract] | |||||
Convertible senior notes | $ 0 | $ 544,504 | |||
Interest rate on convertible senior notes | 0.125% | 0.125% | 0.125% | 0.125% |
Long-Term Obligations and Com_4
Long-Term Obligations and Commitments, Convertible Debt and Call Spread (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 3 Months Ended | 12 Months Ended | ||||
Dec. 31, 2019 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2019 | Apr. 30, 2021 | |
Convertible Debt [Abstract] | ||||||
Repurchase of convertible senior notes | $ 0 | $ 0 | $ 61,967 | |||
Gain (loss) on early retirement of debt | 13,389 | 0 | (8,627) | |||
Unamortized debt issuance costs | 20,061 | |||||
Purchase of note hedges | 0 | 0 | 136,620 | |||
Proceeds from issuance of warrants | 0 | 0 | 89,752 | |||
Amortization of debt issuance costs | 6,330 | 5,373 | 4,958 | |||
Convertible Senior Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Amortization of debt issuance costs | 5,900 | 5,300 | 4,900 | |||
1.75% Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Face amount of offering | 575,000 | |||||
Proceeds from issuance of convertible senior notes | 575,000 | $ 0 | 0 | |||
Outstanding principal balance | 575,000 | |||||
Unamortized debt issuance costs | $ 12,700 | |||||
Maturity date | Jun. 30, 2028 | |||||
Interest rate | 1.75% | 1.75% | ||||
Effective interest rate | 2.30% | |||||
Conversion price per share (in dollars per share) | $ 53.73 | |||||
Total shares of common stock subject to conversion (in shares) | 10.7 | |||||
Percentage of principal amount used as purchase price upon occurrence of fundamental change | 100% | |||||
1.75% Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Proceeds from issuance of convertible senior notes | $ 488,200 | |||||
0% Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Face amount of offering | 632,500 | |||||
Proceeds from issuance of convertible senior notes | 0 | $ 0 | $ 632,500 | |||
Outstanding principal balance | 632,500 | |||||
Unamortized debt issuance costs | $ 7,200 | |||||
Maturity date | Apr. 30, 2026 | |||||
Interest rate | 0% | 0% | 0% | 0% | ||
Effective interest rate | 0.50% | |||||
Conversion price per share (in dollars per share) | $ 57.84 | |||||
Effective conversion price per share with call spread (in dollars per share) | $ 76.39 | |||||
Total shares of common stock subject to conversion (in shares) | 10.9 | |||||
Cost of call spread | $ 46,900 | |||||
Purchase of note hedges | 136,700 | |||||
Proceeds from issuance of warrants | 89,800 | |||||
Percentage of principal amount used as purchase price upon occurrence of fundamental change | 100% | |||||
0% Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Proceeds from issuance of convertible senior notes | $ 319,000 | |||||
0.125% Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Repurchase of convertible senior notes | $ 504,400 | |||||
Principal amount repurchased | 504,400 | |||||
Outstanding principal balance | 44,500 | |||||
Unamortized debt issuance costs | $ 200 | |||||
Maturity date | Dec. 31, 2024 | |||||
Interest rate | 0.125% | 0.125% | 0.125% | 0.125% | 0.125% | |
Effective interest rate | 0.50% | |||||
Conversion price per share (in dollars per share) | $ 83.28 | |||||
Effective conversion price per share with call spread (in dollars per share) | $ 123.38 | |||||
Total shares of common stock subject to conversion (in shares) | 0.5 | |||||
Cost of call spread | $ 52,600 | |||||
Purchase of note hedges | 108,700 | |||||
Proceeds from issuance of warrants | $ 56,100 | |||||
Percentage of principal amount used as purchase price upon occurrence of fundamental change | 100% | |||||
0.125% Notes [Member] | Other Income [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Gain (loss) on early retirement of debt | $ 13,400 | |||||
0.125% Convertible Senior Notes Issued in Exchange for 1 Percent Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Face amount of offering | 439,300 | 439,300 | ||||
0.125% Convertible Senior Notes Issued under Subscription Agreements [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Face amount of offering | 109,500 | 109,500 | ||||
1% Notes [Member] | ||||||
Convertible Debt [Abstract] | ||||||
Repurchase of convertible senior notes | $ 309,900 | |||||
Principal amount repurchased | $ 375,600 | $ 247,900 | $ 375,600 | |||
Interest rate | 1% | 1% |
Long-Term Obligations and Com_5
Long-Term Obligations and Commitments, Financing Arrangements (Details) $ in Thousands | 1 Months Ended | 12 Months Ended | |||
Aug. 31, 2023 USD ($) Lot | Dec. 31, 2023 USD ($) Option | Dec. 31, 2022 USD ($) Agreement | Dec. 31, 2021 USD ($) | Dec. 31, 2017 USD ($) Facility | |
Operating Facilities [Abstract] | |||||
Number of purchased facilities financed with mortgage debt | Facility | 2 | ||||
Number of purchase and sale agreements entered into with real estate investor | Agreement | 2 | ||||
Gain on sale of real estate assets | $ (161) | $ 149,604 | $ 0 | ||
Proceeds from sale of real estate assets | 22 | 254,083 | 0 | ||
Payment of mortgage debt | $ 160 | 50,686 | $ 0 | ||
Long-term Mortgage Debt [Member] | |||||
Operating Facilities [Abstract] | |||||
Face amount | $ 60,400 | ||||
Primary R&D Facility Mortgage [Member] | |||||
Operating Facilities [Abstract] | |||||
Period to make interest only payments on mortgage loan | 5 years | ||||
Payment of mortgage debt | 51,300 | ||||
Manufacturing Facility Mortgage [Member] | |||||
Operating Facilities [Abstract] | |||||
Period to make interest only payments on mortgage loan | 5 years | ||||
Primary R&D Facility [Member] | |||||
Operating Facilities [Abstract] | |||||
Payment to acquire building | $ 79,400 | ||||
Interest rate | 3.88% | ||||
Manufacturing Facility [Member] | |||||
Operating Facilities [Abstract] | |||||
Payment to acquire building | $ 14,000 | ||||
Interest rate | 4.20% | ||||
Headquarters Location in Carlsbad, California [Member] | |||||
Operating Facilities [Abstract] | |||||
Gain on sale of real estate assets | 150,100 | ||||
Number of lots of undeveloped land transferred to real estate investor | Lot | 2 | ||||
Proceeds from sale of real estate assets | $ 263,400 | ||||
Initial term of lease | 15 years | ||||
Number of options to extend lease | Option | 2 | ||||
Term of lease extension | 5 years | ||||
Undeveloped Land in Carlsbad, California [Member] | |||||
Operating Facilities [Abstract] | |||||
Number of lots of undeveloped land transferred to real estate investor | Lot | 2 | ||||
Proceeds from sale of real estate assets | $ 33,000 | ||||
New R&D Facility in Carlsbad, CA [Member] | |||||
Operating Facilities [Abstract] | |||||
Initial term of lease | 15 years | ||||
Number of options to extend lease | Option | 2 | ||||
Term of lease extension | 5 years |
Long-Term Obligations and Com_6
Long-Term Obligations and Commitments, Debt Maturity Schedules (Details) $ in Thousands | Dec. 31, 2023 USD ($) |
Debt Maturities [Abstract] | |
2024 | $ 55,298 |
2025 | 10,657 |
2026 | 643,157 |
2027 | 10,509 |
2028 | 580,277 |
Thereafter | 8,462 |
Total debt and mortgage maturities | 1,308,360 |
Less: Current portion included in other current liabilities | (157) |
Less: Fixed and determinable interest | (47,138) |
Less: Debt issuance costs | (20,061) |
Total long-term debt | $ 1,241,004 |
Long-Term Obligations and Com_7
Long-Term Obligations and Commitments, Operating Leases (Details) $ in Thousands | 1 Months Ended | 12 Months Ended | ||
Aug. 31, 2023 USD ($) Lot | Dec. 31, 2023 USD ($) Option | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | |
Operating Leases [Abstract] | ||||
Lease payments to be made over initial term of lease | $ 279,536 | |||
Right-of-use operating lease assets | 171,896 | $ 181,544 | ||
Operating lease liabilities | $ 178,969 | 186,156 | ||
Weighted average remaining lease term | 13 years | |||
Weighted average discount rate | 6.90% | |||
Operating lease cash payments | $ 20,100 | $ 4,000 | $ 3,300 | |
Carlsbad Facility [Member] | ||||
Operating Leases [Abstract] | ||||
Number of options to extend lease | Option | 1 | |||
Term of lease extension | 5 years | |||
Carlsbad Office Space [Member] | ||||
Operating Leases [Abstract] | ||||
Number of options to extend lease | Option | 0 | |||
Carlsbad Warehouse Space [Member] | ||||
Operating Leases [Abstract] | ||||
Number of options to extend lease | Option | 0 | |||
Headquarters Location in Carlsbad, California [Member] | ||||
Operating Leases [Abstract] | ||||
Initial term of lease | 15 years | |||
Number of options to extend lease | Option | 2 | |||
Term of lease extension | 5 years | |||
Lease payments to be made over initial term of lease | $ 280,000 | |||
Number of lots of undeveloped land transferred to real estate investor | Lot | 2 | |||
Development Chemistry and Manufacturing Facility in Oceanside, California [Member] | ||||
Operating Leases [Abstract] | ||||
Impairment charge | $ 20,000 | |||
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income [Extensible Enumeration] | Selling, General and Administrative Expense | |||
Boston Office Space [Member] | ||||
Operating Leases [Abstract] | ||||
Initial term of lease | 123 months | |||
Term of lease extension | 5 years | |||
Period of free rent under lease | 3 months | |||
Subleased Office Space in Boston [Member] | ||||
Operating Leases [Abstract] | ||||
Term of sublease | 83 months | |||
Number of options to extend sublease | Option | 0 | |||
Period of free rent under sublease | 7 months | |||
Lease payments to be received over term of sublease | $ 9,600 | |||
Another Office Space in Boston [Member] | ||||
Operating Leases [Abstract] | ||||
Initial term of lease | 91 months | |||
Number of options to extend lease | Option | 1 | |||
Term of lease extension | 5 years | |||
Period of free rent under lease | 7 months | |||
Lease payments to be made over initial term of lease | $ 6,800 |
Long-Term Obligations and Com_8
Long-Term Obligations and Commitments, Future Payments for Operating Lease Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Future Payments for Operating Lease Liabilities [Abstract] | |||
2024 | $ 20,398 | ||
2025 | 20,645 | ||
2026 | 20,781 | ||
2027 | 20,800 | ||
2028 | 20,774 | ||
Thereafter | 176,138 | ||
Total minimum lease payments | 279,536 | ||
Less: Imputed interest | (100,567) | ||
Less: Current portion (included in other current liabilities) | (8,094) | ||
Total long-term lease liabilities | $ 170,875 | $ 178,941 | |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other current liabilities | ||
Rent expense | $ 23,100 | $ 8,300 | $ 3,400 |
Long-Term Obligations and Com_9
Long-Term Obligations and Commitments, Royalty Revenue Monetization (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended | ||
Jan. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Royalty Revenue Monetization [Abstract] | ||||
Upfront payment received | $ 500,000 | |||
Maximum amount of payments receivable for additional milestones | 625,000 | |||
Transaction costs | $ 10,434 | $ 29 | $ 0 | |
Proceeds from sale of future royalties | 500,000 | 0 | 0 | |
Royalty payments to Royalty Pharma | (44,628) | 0 | 0 | |
Interest expense related to sale of future royalties | 68,238 | 0 | 0 | |
Issuance costs related to sale of future royalties | (10,434) | (29) | $ 0 | |
Net liability related to sale of future royalties | 513,736 | $ 0 | ||
SPINRAZA [Member] | ||||
Royalty Revenue Monetization [Abstract] | ||||
Maximum amount of annual sales on which royalty payments are paid | $ 1,500,000 | $ 1,500,000 | ||
SPINRAZA [Member] | Minimum [Member] | ||||
Royalty Revenue Monetization [Abstract] | ||||
Percentage of royalty payments paid on annual sales of medicine | 25% | 25% | ||
Maximum royalty payments made before royalty interest reverts back | $ 475,000 | $ 475,000 | ||
SPINRAZA [Member] | Maximum [Member] | ||||
Royalty Revenue Monetization [Abstract] | ||||
Percentage of royalty payments paid on annual sales of medicine | 45% | 45% | ||
Maximum royalty payments made before royalty interest reverts back | $ 550,000 | $ 550,000 | ||
Pelacarsen [Member] | ||||
Royalty Revenue Monetization [Abstract] | ||||
Percentage of royalty payments paid on annual sales of medicine | 25% | |||
Royalty Purchase Agreement [Member] | ||||
Royalty Revenue Monetization [Abstract] | ||||
Transaction costs | $ 10,434 | |||
Effective interest rate | 13.50% | |||
Proceeds from sale of future royalties | $ 500,000 | |||
Royalty payments to Royalty Pharma | (44,628) | |||
Interest expense related to sale of future royalties | 68,238 | |||
Liability related to sale of future royalties | 523,610 | |||
Issuance costs related to sale of future royalties | (10,434) | |||
Amortization of issuance costs related to sale of future royalties | 560 | |||
Net liability related to sale of future royalties | $ 513,736 |
Stockholders' Equity, Preferred
Stockholders' Equity, Preferred and Common Stock (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Common Stock [Abstract] | |||
Common stock, shares authorized to issue (in shares) | 300,000,000 | 300,000,000 | |
Common stock, shares issued (in shares) | 144,340,526 | 142,057,736 | |
Common stock, shares outstanding (in shares) | 144,340,526 | 142,057,736 | |
Net proceeds from stock option exercises, vesting of restricted stock units, and ESPP purchases | $ 49,442 | $ 6,373 | $ 11,565 |
Preferred Stock [Member] | |||
Preferred Stock [Abstract] | |||
Preferred stock, shares authorized (in shares) | 15,000,000 | ||
Preferred stock, shares outstanding (in shares) | 0 | ||
Series C Junior Participating Preferred Stock [Member] | |||
Preferred Stock [Abstract] | |||
Preferred stock, shares issued (in shares) | 0 | ||
Preferred stock, shares outstanding (in shares) | 0 | ||
Common Stock [Member] | |||
Common Stock [Abstract] | |||
Common stock, shares authorized to issue (in shares) | 300,000,000 | 300,000,000 | |
Common stock, shares issued (in shares) | 144,300,000 | 142,100,000 | |
Common stock, shares outstanding (in shares) | 144,300,000 | 142,100,000 | |
Common shares reserved for future issuance (in shares) | 49,700,000 | ||
Number of shares issued for stock option exercises, vesting of restricted stock units, and ESPP purchases (in shares) | 2,300,000 | 1,200,000 | 1,100,000 |
Net proceeds from stock option exercises, vesting of restricted stock units, and ESPP purchases | $ 49,400 | $ 6,400 | $ 11,600 |
Stockholders' Equity, Stock Pla
Stockholders' Equity, Stock Plans (Details) | 12 Months Ended | |||||||||||||||||||
Dec. 31, 2023 Officer $ / shares shares | Dec. 31, 2019 shares | Dec. 31, 2018 shares | Dec. 31, 2017 shares | Dec. 31, 2016 shares | Dec. 31, 2015 shares | Dec. 31, 2014 shares | Dec. 31, 2013 shares | Dec. 31, 2012 shares | Dec. 31, 2011 shares | Dec. 31, 2010 shares | Dec. 31, 2009 shares | Jun. 30, 2023 shares | Dec. 31, 2022 shares | Jun. 30, 2021 shares | Dec. 31, 2020 shares | Jun. 30, 2019 shares | May 31, 2017 shares | Jun. 30, 2015 shares | May 31, 2015 shares | |
Stock Options [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Number of options outstanding (in shares) | 14,091,000 | 14,970,000 | ||||||||||||||||||
Number of options exercisable (in shares) | 9,703,000 | |||||||||||||||||||
1989 Stock Option Plan [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Number of shares authorized for issuance under the Plan (in shares) | 20,000,000 | |||||||||||||||||||
Number of options outstanding (in shares) | 0 | |||||||||||||||||||
Number of shares available for grant (in shares) | 68,000 | |||||||||||||||||||
1989 Stock Option Plan [Member] | Stock Options [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting period | 4 years | |||||||||||||||||||
Award term | 7 years | |||||||||||||||||||
1989 Stock Option Plan [Member] | Stock Options [Member] | One Year from Date of Grant [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting percentage | 25% | |||||||||||||||||||
Period before options are exercisable | 1 year | |||||||||||||||||||
2011 Equity Incentive Plan [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Number of shares authorized for issuance under the Plan (in shares) | 35,200,000 | 29,700,000 | 23,000,000 | 16,000,000 | 11,000,000 | 5,500,000 | ||||||||||||||
Reduction in fungible share reserve for each share issued pursuant to full value award (n shares) | (1.7) | |||||||||||||||||||
Increase in fungible share reserve for each share returning from a full value award (in shares) | 1.7 | |||||||||||||||||||
Number of options outstanding (in shares) | 12,800,000 | |||||||||||||||||||
Number of options exercisable (in shares) | 8,700,000 | |||||||||||||||||||
Number of shares available for grant (in shares) | 8,000,000 | |||||||||||||||||||
Number of executive officers terminated before change in control when vesting will accelerate for executive officers | Officer | 1 | |||||||||||||||||||
Period before change in control when vesting will accelerate for executive officers | 3 months | |||||||||||||||||||
Period after change in control when vesting will accelerate for executive officers | 12 months | |||||||||||||||||||
2011 Equity Incentive Plan [Member] | Stock Options [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting period | 4 years | |||||||||||||||||||
Award term | 7 years | |||||||||||||||||||
2011 Equity Incentive Plan [Member] | Stock Options [Member] | Issued after December 31, 2021 [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Award term | 10 years | |||||||||||||||||||
2011 Equity Incentive Plan [Member] | Stock Options [Member] | One Year from Date of Grant [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting percentage | 25% | |||||||||||||||||||
Period before options are exercisable | 1 year | |||||||||||||||||||
2011 Equity Incentive Plan [Member] | Restricted Stock Units [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting period | 4 years | |||||||||||||||||||
Number of awards outstanding (in shares) | 3,300,000 | |||||||||||||||||||
2020 Equity Incentive Plan [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Number of shares authorized for issuance under the Plan (in shares) | 1,600,000 | 2,600,000 | ||||||||||||||||||
Number of options outstanding (in shares) | 400,000 | |||||||||||||||||||
Number of options exercisable (in shares) | 100,000 | |||||||||||||||||||
Number of shares available for grant (in shares) | 1,000,000 | |||||||||||||||||||
2020 Equity Incentive Plan [Member] | Stock Options [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting period | 4 years | |||||||||||||||||||
Award term | 7 years | |||||||||||||||||||
2020 Equity Incentive Plan [Member] | Stock Options [Member] | Issued after December 31, 2021 [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Award term | 10 years | |||||||||||||||||||
2020 Equity Incentive Plan [Member] | Stock Options [Member] | One Year from Date of Grant [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting percentage | 25% | |||||||||||||||||||
Period before options are exercisable | 1 year | |||||||||||||||||||
2020 Equity Incentive Plan [Member] | Restricted Stock Units [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Vesting period | 4 years | |||||||||||||||||||
Number of awards outstanding (in shares) | 200,000 | |||||||||||||||||||
2002 Non-Employee Directors' Stock Option Plan [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Number of shares authorized for issuance under the Plan (in shares) | 2,000,000 | 1,200,000 | 2,800,000 | |||||||||||||||||
Number of options outstanding (in shares) | 900,000 | |||||||||||||||||||
Number of options exercisable (in shares) | 900,000 | |||||||||||||||||||
Number of shares available for grant (in shares) | 500,000 | |||||||||||||||||||
2002 Non-Employee Directors' Stock Option Plan [Member] | Stock Options [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Award term | 10 years | |||||||||||||||||||
2002 Non-Employee Directors' Stock Option Plan [Member] | Restricted Stock Units [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Number of awards outstanding (in shares) | 40,000 | |||||||||||||||||||
Employee Stock Purchase Plan [Member] | ||||||||||||||||||||
Stock Plans [Abstract] | ||||||||||||||||||||
Number of shares authorized for issuance under the Plan (in shares) | 3,200,000 | |||||||||||||||||||
Number of additional shares reserved for issuance (in shares) | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | 150,000 | |||||||||
Maximum percentage of employee compensation used to purchase shares | 10% | |||||||||||||||||||
Percentage of fair market value used to determine purchase price of stock | 85% | |||||||||||||||||||
Holding period for purchased stock | 6 months | |||||||||||||||||||
Shares purchased and issued under ESPP (in shares) | 100,000 | |||||||||||||||||||
Weighted average purchase price (in dollars per share) | $ / shares | $ 30.53 | |||||||||||||||||||
Shares available for purchase under ESPP (in shares) | 400,000 |
Stockholders' Equity, Stock Opt
Stockholders' Equity, Stock Option Activity (Details) - Stock Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Number of Shares [Abstract] | |||
Outstanding at beginning of period (in shares) | 14,970 | ||
Granted (in shares) | 2,407 | ||
Exercised (in shares) | (1,444) | ||
Cancelled/forfeited/expired (in shares) | (1,842) | ||
Outstanding at end of period (in shares) | 14,091 | 14,970 | |
Exercisable at end of period (in shares) | 9,703 | ||
Weighted Average Exercise Price Per Share [Abstract] | |||
Outstanding at beginning of period (in dollars per share) | $ 50.57 | ||
Granted (in dollars per share) | 38.8 | ||
Exercised (in dollars per share) | 45.06 | ||
Cancelled/forfeited/expired (in dollars per share) | 55.9 | ||
Outstanding at end of period (in dollars per share) | 48.43 | $ 50.57 | |
Exercisable at end of period (in dollars per share) | $ 52.24 | ||
Average Remaining Contractual Term, Aggregate Intrinsic Value and Other [Abstract] | |||
Average remaining contractual term, outstanding at end of period | 4 years 8 months 26 days | ||
Average remaining contractual term, exercisable at end of period | 3 years 2 months 12 days | ||
Aggregate intrinsic value, outstanding at end of period | $ 78,542 | ||
Aggregate intrinsic value, exercisable at end of period | $ 28,349 | ||
Weighted average fair value of options granted (in dollars per share) | $ 19.72 | $ 18.66 | $ 24.35 |
Intrinsic value of options exercised | $ 6,000 | $ 1,400 | $ 2,500 |
Cash received from exercise of stock options | $ 65,100 | $ 3,600 | $ 8,500 |
Weighted-average fair value of options exercised (in dollars per share) | $ 49.23 | ||
Unrecognized Compensation Expense [Abstract] | |||
Unrecognized compensation cost related to non-vested stock options | $ 36,600 | ||
Weighted average period for recognition | 1 year 1 month 6 days |
Stockholders' Equity, Restricte
Stockholders' Equity, Restricted Stock Unit Activity (Details) - Restricted Stock Units [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Number of Shares [Abstract] | |||
Non-vested at beginning of period (in shares) | 2,766 | ||
Granted (in shares) | 1,707 | ||
Vested (in shares) | (1,055) | ||
Cancelled/forfeited (in shares) | (179) | ||
Non-vested at end of period (in shares) | 3,239 | 2,766 | |
Weighted Average Grant Date Fair Value per Share [Abstract] | |||
Non-vested at beginning of period (in dollars per share) | $ 48.3 | ||
Granted (in dollars per share) | 40.51 | $ 36.14 | $ 57.02 |
Vested (in dollars per share) | 51.64 | ||
Cancelled/forfeited (in dollars per share) | 42.9 | ||
Non-vested at end of period (in dollars per share) | $ 43.4 | $ 48.3 | |
Unrecognized Compensation Expense [Abstract] | |||
Unrecognized compensation cost related to non-vested units | $ 53.7 | ||
Weighted average period for recognition | 1 year 3 months 18 days |
Stockholders' Equity, Performan
Stockholders' Equity, Performance Restricted Stock Unit Activity (Details) - Performance Restricted Stock Units [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Number of Shares [Abstract] | |||
Non-vested at beginning of period (in shares) | 143 | ||
Granted (in shares) | 158 | ||
Vested (in shares) | (75) | ||
Non-vested at end of period (in shares) | 226 | 143 | |
Weighted Average Grant Date Fair Value per Share [Abstract] | |||
Non-vested at beginning of period (in dollars per share) | $ 52.59 | ||
Granted (in dollars per share) | 57.43 | $ 42.28 | $ 77.17 |
Vested (in dollars per share) | 52.43 | ||
Non-vested at end of period (in dollars per share) | $ 56.04 | $ 52.59 | |
Unrecognized Compensation Expense [Abstract] | |||
Unrecognized compensation cost related to non-vested units | $ 4.4 | ||
Weighted average period for recognition | 1 year 4 months 24 days |
Stockholders' Equity, Stock-bas
Stockholders' Equity, Stock-based Compensation Expense (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Stock-Based Compensation [Abstract] | |||
Stock-based compensation expense | $ 105,809 | $ 100,264 | $ 120,678 |
Cost of Sales [Member] | |||
Stock-Based Compensation [Abstract] | |||
Stock-based compensation expense | 499 | 533 | 456 |
Research, Development and Patent [Member] | |||
Stock-Based Compensation [Abstract] | |||
Stock-based compensation expense | 77,826 | 73,704 | 87,522 |
Selling, General and Administrative [Member] | |||
Stock-Based Compensation [Abstract] | |||
Stock-based compensation expense | $ 27,484 | $ 26,027 | $ 32,700 |
Stockholders' Equity, Stock-b_2
Stockholders' Equity, Stock-based Valuation Information (Details) | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Employee Stock Options [Member] | |||
Weighted-Average Assumptions [Abstract] | |||
Risk-free interest rate | 3.80% | 2.10% | 0.60% |
Dividend yield | 0% | 0% | 0% |
Volatility | 46.80% | 54.50% | 54% |
Expected life | 6 years 3 months 18 days | 6 years 3 months 18 days | 4 years 10 months 24 days |
Employee Stock Options [Member] | 2011 Equity Incentive Plan [Member] | |||
Weighted-Average Assumptions [Abstract] | |||
Award term | 7 years | ||
Employee Stock Options [Member] | 2011 Equity Incentive Plan [Member] | Issued after December 31, 2021 [Member] | |||
Weighted-Average Assumptions [Abstract] | |||
Award term | 10 years | ||
Employee Stock Options [Member] | 2020 Equity Incentive Plan [Member] | |||
Weighted-Average Assumptions [Abstract] | |||
Award term | 7 years | ||
Employee Stock Options [Member] | 2020 Equity Incentive Plan [Member] | Issued after December 31, 2021 [Member] | |||
Weighted-Average Assumptions [Abstract] | |||
Award term | 10 years | ||
Board of Director Stock Options [Member] | |||
Weighted-Average Assumptions [Abstract] | |||
Risk-free interest rate | 3.80% | 2.90% | 1.20% |
Dividend yield | 0% | 0% | 0% |
Volatility | 52.70% | 56.20% | 55.90% |
Expected life | 7 years 8 months 12 days | 7 years 4 months 24 days | 7 years 3 months 18 days |
ESPP [Member] | |||
Weighted-Average Assumptions [Abstract] | |||
Risk-free interest rate | 5.30% | 1.20% | 0.10% |
Dividend yield | 0% | 0% | 0% |
Volatility | 36% | 50.10% | 42.40% |
Expected life | 6 months | 6 months | 6 months |
Income Taxes, Loss Before Incom
Income Taxes, Loss Before Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Income Taxes [Abstract] | |||
United States | $ (334,707) | $ (258,493) | $ (29,966) |
Foreign | 742 | 508 | 818 |
Loss before income tax benefit (expense) | $ (333,965) | $ (257,985) | $ (29,148) |
Income Taxes, Income Tax Expens
Income Taxes, Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Current [Abstract] | |||
Federal | $ 35,861 | $ 10,522 | $ (200) |
State | (3,687) | 1,129 | (690) |
Foreign | 147 | 86 | 339 |
Total current income tax expense (benefit) | 32,321 | 11,737 | (551) |
Deferred [Abstract] | |||
Federal | 0 | 0 | 0 |
State | 0 | 0 | 0 |
Total deferred income tax benefit | 0 | 0 | 0 |
Total income tax expense (benefit) | $ 32,321 | $ 11,737 | $ (551) |
Income Taxes, Reconciliation of
Income Taxes, Reconciliation of Statutory to Effective Tax Rate (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Reconciliation Between Effective and Statutory Tax Rate [Abstract] | |||
Pre-tax income (loss) | $ (333,965) | $ (257,985) | $ (29,148) |
Statutory rate | (70,133) | (54,177) | (6,121) |
State income tax net of federal benefit | (22,597) | (13,622) | 4,278 |
Foreign | (22) | (49) | 143 |
Net change in valuation allowance | 175,388 | 104,951 | 2,885 |
Loss on debt transactions | 0 | 0 | 262 |
Tax credits | (67,131) | (39,729) | (23,198) |
Deferred tax true-up | 4 | (20) | (24) |
Tax rate change | 1,023 | (3,091) | 12,838 |
Non-deductible compensation | 3,814 | 3,023 | 5,085 |
Other non-deductible items | 327 | 57 | 84 |
Foreign-derived intangible income benefit | (7,493) | 0 | 0 |
Stock-based compensation | 19,546 | 14,030 | 4,720 |
Other | (405) | 364 | (1,503) |
Total income tax expense (benefit) | $ 32,321 | $ 11,737 | $ (551) |
Reconciliation Between Effective and Statutory Tax Rate Percentage [Abstract] | |||
Statutory rate | 21% | 21% | 21% |
State income tax net of federal benefit | 6.80% | 5.30% | (14.70%) |
Foreign | 0% | 0% | (0.50%) |
Net change in valuation allowance | (52.50%) | (40.70%) | (9.90%) |
Loss on debt transactions | 0% | 0% | (0.90%) |
Tax credits | 20.10% | 15.40% | 79.60% |
Deferred tax true-up | 0% | 0% | 0.10% |
Tax rate change | (0.30%) | 1.20% | (44.00%) |
Non-deductible compensation | (1.10%) | (1.20%) | (17.40%) |
Other non-deductible items | (0.10%) | 0% | (0.30%) |
Foreign-derived intangible income benefit | 2.20% | 0% | 0% |
Stock-based compensation | (5.90%) | (5.40%) | (16.20%) |
Other | 0.10% | (0.10%) | 5.10% |
Effective rate | (9.70%) | (4.50%) | 1.90% |
Income Taxes, Deferred Tax Asse
Income Taxes, Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended | |
Dec. 31, 2023 | Dec. 31, 2022 | |
Deferred Tax Assets [Abstract] | ||
Net operating loss carryovers | $ 77,964 | $ 87,802 |
Tax credits | 239,962 | 277,436 |
Deferred revenue | 71,683 | 85,700 |
Stock-based compensation | 77,468 | 86,983 |
Intangible and capital assets | 104,380 | 104,649 |
Convertible debt | 16,849 | 34,384 |
Capitalized research and development expenses | 238,738 | 119,635 |
Long-term lease liabilities | 43,718 | 45,612 |
Sale of future royalties | 144,608 | 0 |
Other | 10,343 | 15,813 |
Total deferred tax assets | 1,025,713 | 858,014 |
Deferred Tax Liabilities [Abstract] | ||
Fixed assets | (4,166) | (4,475) |
Right-of-use assets | (42,007) | (44,504) |
Other | (1,910) | (313) |
Net deferred tax asset | 977,630 | 808,722 |
Valuation allowance | (977,630) | (808,722) |
Total net deferred tax assets and liabilities | 0 | $ 0 |
Increase in valuation allowance | $ 169,000 |
Income Taxes, Tax Credit Carryf
Income Taxes, Tax Credit Carryforwards (Details) $ in Millions | 12 Months Ended |
Dec. 31, 2023 USD ($) | |
Federal [Member] | |
Operating Loss Carryforwards [Abstract] | |
Net operating loss carryforwards | $ 242.8 |
California [Member] | |
Operating Loss Carryforwards [Abstract] | |
Net operating loss carryforwards | 398.8 |
Research and Development [Member] | Federal [Member] | |
Tax Credit Carryforwards [Abstract] | |
Tax credit carryforwards | 169.7 |
Research and Development [Member] | California [Member] | |
Tax Credit Carryforwards [Abstract] | |
Tax credit carryforwards | 124.4 |
State [Member] | |
Operating Loss Carryforwards [Abstract] | |
Operating loss carryforwards utilized | $ 3.2 |
Income Taxes, Gross Unrecognize
Income Taxes, Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Gross Unrecognized Tax Benefits [Roll Forward] | |||
Beginning balance of unrecognized tax benefits | $ 56,567 | $ 55,085 | $ 54,163 |
Decrease for lapse of statute of limitations | (14,993) | 0 | 0 |
Decrease for prior period tax positions | (737) | (267) | (695) |
Increase for prior period tax positions | 429 | 259 | 263 |
Increase for current period tax positions | 2,032 | 1,490 | 1,354 |
Ending balance of unrecognized tax benefits | 43,298 | 56,567 | 55,085 |
Unrecognized tax benefits that could impact effective tax rate, if recognized | 300 | 6,200 | 6,200 |
Decrease in unrecognized tax benefits that is reasonably possible | 7,600 | ||
Interest and penalties on gross unrecognized tax benefits | $ 100 | $ 800 | $ 500 |
Employment Benefits (Details)
Employment Benefits (Details) - USD ($) | 12 Months Ended | ||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |
Employee Benefits [Abstract] | |||
Matching contributions | $ 7,100,000 | $ 5,600,000 | $ 5,500,000 |
Minimum [Member] | |||
Employee Benefits [Abstract] | |||
Employee contribution limit per calendar year | 22,500 | ||
Maximum [Member] | |||
Employee Benefits [Abstract] | |||
Employee contribution limit per calendar year | $ 30,000 |
Fourth Quarter Financial Data_3
Fourth Quarter Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended | |||||
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | |||
Fourth Quarter Financial Data (Unaudited) [Abstract] | |||||||
Revenue | $ 324,505 | [1] | $ 151,890 | ||||
Operating expenses | 330,627 | [2] | 359,909 | $ 1,141,377 | $ 997,558 | $ 840,642 | |
Loss from operations | (6,122) | (208,019) | (353,730) | (410,191) | (30,186) | ||
Net loss | $ (9,263) | $ (52,430) | [3] | $ (366,286) | $ (269,722) | $ (28,597) | |
Basic net loss per share (in dollars per share) | $ (0.06) | [4],[5] | $ (0.37) | [4],[5] | $ (2.56) | $ (1.9) | $ (0.2) |
Diluted net loss per share (in dollars per share) | $ (0.06) | [4] | $ (0.37) | [4],[6] | $ (2.56) | $ (1.9) | $ (0.2) |
Gain on sale of real estate assets | $ 150,100 | $ (161) | $ 150,135 | $ 0 | |||
WAINUA (Eplontersen) [Member] | |||||||
Fourth Quarter Financial Data (Unaudited) [Abstract] | |||||||
Revenue | $ 50,000 | ||||||
Cardiovascular, Renal and Metabolic Diseases [Member] | |||||||
Fourth Quarter Financial Data (Unaudited) [Abstract] | |||||||
Revenue | $ 36,000 | ||||||
Metagenomi License Agreement [Member] | |||||||
Fourth Quarter Financial Data (Unaudited) [Abstract] | |||||||
Upfront payment | $ 80,000 | ||||||
[1]Revenue was higher in the three months ended December 31, 2023 compared to the same period in 2022 primarily due to the $50 million milestone payment we earned from AstraZeneca when the FDA approved WAINUA for ATTRv-PN in the U.S., $36 million payment we earned when AstraZeneca licensed ION826 and revenue we recognized in the fourth quarter of 2023 from the upfront payments we received from our new collaborations with Otsuka, Roche and Novartis.[2]Operating expenses were lower in the three months ended December 31, 2023 compared to the same period in 2022 primarily due to the $80 million upfront payment we made for our collaboration with Metagenomi in the fourth quarter of 2022.[3]Our net loss for the three months ended December 31, 2022 includes the $150.1 million gain we recognized from the sale and leaseback transaction for our headquarters in Carlsbad, California.[4] We the year. Organization and Significant Accounting Policies, |