Biggest changeDiscussion of Results of Operations Revenues Total revenues consist of the following: Years Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change Net product revenues $ 894,329 $ 662,138 $ 361,520 $ 232,191 35 % $ 300,618 83 % Net revenues from collaborations 134,912 180,953 131,333 (46,041) (25) % 49,620 38 % Royalty revenue 8,177 1,196 — 6,981 584 % 1,196 N/A Total $ 1,037,418 $ 844,287 $ 492,853 $ 193,131 23 % $ 351,434 71 % 85 Table of Contents Net Product Revenues Net product revenues consist of the following, by product and region: Year Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change ONPATTRO United States $ 246,748 $ 213,210 $ 151,574 $ 33,538 16 % $ 61,636 41 % Europe 224,063 190,435 107,755 33,628 18 % 82,680 77 % Rest of World 86,797 71,092 46,752 15,705 22 % 24,340 52 % Total 557,608 474,737 306,081 82,871 17 % 168,656 55 % AMVUTTRA United States 82,521 — — 82,521 N/A — N/A Europe 4,214 — — 4,214 N/A — N/A Rest of World 7,060 — — 7,060 N/A — N/A Total 93,795 — — 93,795 N/A — N/A GIVLAARI United States 115,659 92,747 42,797 22,912 25 % 49,950 117 % Europe 48,670 30,895 12,000 17,775 58 % 18,895 157 % Rest of World 8,815 4,173 309 4,642 111 % 3,864 1,250 % Total 173,144 127,815 55,106 45,329 35 % 72,709 132 % OXLUMO United States 27,698 18,876 — 8,822 47 % 18,876 N/A Europe 37,915 38,949 333 (1,034) (3) % 38,616 11,596 % Rest of World 4,169 1,761 — 2,408 137 % 1,761 N/A Total 69,782 59,586 333 10,196 17 % 59,253 17,794 % Total net product revenues $ 894,329 $ 662,138 $ 361,520 $ 232,191 35 % $ 300,618 83 % Net product revenues increased during the year ended December 31, 2022, compared to the year ended December 31, 2021, primarily as a result of increased patients across our commercial portfolio of products, including the initial launch of AMVUTTRA.
Biggest changeDiscussion of Results of Operations Revenues Total revenues consist of the following: Years Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change Net product revenues $ 1,241,474 $ 894,329 $ 662,138 $ 347,145 39 % $ 232,191 35 % Net revenues from collaborations 546,185 134,912 180,953 411,273 305 % (46,041) (25) % Royalty revenue 40,633 8,177 1,196 32,456 397 % 6,981 * Total $ 1,828,292 $ 1,037,418 $ 844,287 $ 790,874 76 % $ 193,131 23 % * Indicates the percentage change period over period is greater than 500%. 84 Table of Con tents Net Product Revenues Net product revenues consist of the following, by product and region: Year Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change ONPATTRO United States $ 97,739 $ 246,748 $ 213,210 $ (149,009) (60) % $ 33,538 16 % Europe 210,916 224,063 190,435 (13,147) (6) % 33,628 18 % Rest of World 45,891 86,797 71,092 (40,906) (47) % 15,705 22 % Total 354,546 557,608 474,737 (203,062) (36) % 82,871 17 % AMVUTTRA United States 411,169 82,521 — 328,648 398 % 82,521 N/A Europe 70,898 4,214 — 66,684 * 4,214 N/A Rest of World 75,771 7,060 — 68,711 * 7,060 N/A Total 557,838 93,795 — 464,043 495 % 93,795 N/A GIVLAARI United States 141,954 115,659 92,747 26,295 23 % 22,912 25 % Europe 57,498 48,670 30,895 8,828 18 % 17,775 58 % Rest of World 19,799 8,815 4,173 10,984 125 % 4,642 111 % Total 219,251 173,144 127,815 46,107 27 % 45,329 35 % OXLUMO United States 38,159 27,698 18,876 10,461 38 % 8,822 47 % Europe 60,025 37,915 38,949 22,110 58 % (1,034) (3) % Rest of World 11,655 4,169 1,761 7,486 180 % 2,408 137 % Total 109,839 69,782 59,586 40,057 57 % 10,196 17 % Total net product revenues $ 1,241,474 $ 894,329 $ 662,138 $ 347,145 39 % $ 232,191 35 % Net product revenues increased during the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to the launch of AMVUTTRA in the third quarter of 2022, partially offset by a decrease of demand for ONPATTRO due to patient switches to AMVUTTRA.
However, our ongoing development efforts may not be successful and we may not be able to commence sales of any other products or successfully expand the indications for our approved products, including ONPATTRO and AMVUTTRA in the future.
However, our ongoing development efforts may not be successful and we may not be able to commence sales of any other products or successfully expand the approved indications for our approved products, including AMVUTTRA, in the future.
Third-party forecasts are updated periodically as new data is obtained with regards to Leqvio's global launch progress or as sales information becomes available. Increases, decreases or a shift in timing of estimated revenues affects the interest rate utilized in the calculation of the liability related to the sale of future royalties.
Third-party forecasts are updated periodically as new data is obtained with respect to Leqvio’s global launch progress or as sales information becomes available. Increases, decreases or a shift in timing of estimated revenues affects the interest rate utilized in the calculation of the liability related to the sale of future royalties.
We use the expected value method to estimate variable consideration for chargebacks, certain rebates, and other incentives and we use the most likely amount method for certain rebates and trade discounts and allowances. A 10% increase or decrease in these estimates impacts net sales by a corresponding increase or decrease of approximately $7.0 million.
We use the expected value method to estimate variable consideration for chargebacks, certain rebates, and other incentives and we use the most likely amount method for certain rebates and trade discounts and allowances. A 10% increase or decrease in these estimates impacts net sales by a corresponding increase or decrease of approximately $13.0 million.
Due to numerous factors described in more detail under the caption Part I, Item 1A, "Risk Factors" of this Annual Report on Form 10-K, we may require significant additional funds earlier than we currently expect in order to continue to commercialize ONPATTRO, AMVUTTRA, GIVLAARI and OXLUMO, and to develop, conduct clinical trials for, manufacture and, if approved, commercialize additional product candidates.
Due to numerous factors described in more detail under the caption Part I, Item 1A, “Risk Factors” of this Annual Report on Form 10-K, we may require significant additional funds earlier than we currently expect in order to continue to commercialize ONPATTRO, AMVUTTRA, GIVLAARI and OXLUMO, and to develop, conduct clinical trials for, manufacture and, if approved, commercialize additional product candidates.
Recognition of our combined net revenues from collaborations and royalty revenue is dependent on a variety of factors including the level of work reimbursed by partners, achievement of milestones under our collaboration agreements, and royalties associated with sales of Leqvio.
Recognition of our combined net revenues from collaborations and royalty revenue is dependent on a variety of factors including the level of work reimbursed by collaborators, achievement of milestones under our collaboration agreements, and royalties associated with sales of Leqvio.
The estimates for our product revenue allowances and accruals are most significantly affected by chargebacks, which are contractual commitments with the government and other entities to sell products to qualified healthcare providers at prices lower than the list prices charged to the customer who directly purchases from us, and rebates that represent discount obligations under government programs, including Medicaid in the U.S. and similar programs in certain other countries, 90 Table of Contents including countries in which we are accruing for estimated rebates because final pricing has not yet been negotiated.
The estimates for our product revenue allowances and accruals are most significantly affected by chargebacks, which are contractual commitments with the government and other entities to sell products to qualified healthcare providers at prices lower than the list prices charged to the customer who directly purchases from us, and rebates that represent discount obligations under government programs, including Medicaid in the U.S. and similar programs in certain other countries, including countries in which we are accruing for estimated rebates because final pricing has not yet been negotiated.
In addition to revenues from the commercial sales of our approved products and potentially from sales of future products, we expect our sources of potential funding for the next several years to continue to be derived in part from existing and new strategic alliances.
In addition to revenues from the commercial sales of our approved products and potentially from sales of future products, we expect our sources of potential funding for the next several years to continue to be derived in part from existing and new strategic collaborations.
During the years ended December 31, 2022 and 2021, in connection with advancing activities under our collaboration agreements, we incurred research and development expenses, primarily related to external development and clinical expenses, including the manufacture of clinical product.
During the years ended December 31, 2023 and 2022, in connection with advancing activities under our collaboration agreements, we incurred research and development expenses, primarily related to external development and clinical expenses, including the manufacture of clinical product.
A 10% increase or decrease in the total forecasted costs to be incurred over the period the transfer of goods or services occurs impacts net revenues from collaborators by a corresponding decrease or increase of approximately $32.0 million.
A 10% increase or decrease in the total forecasted costs to be incurred over the period the transfer of goods or services occurs impacts net revenues from collaborators by a corresponding decrease or increase of approximately $39.0 million.
For elements of collaboration arrangements that are accounted for pursuant to ASC Topic 606, Revenue from Contracts with Customers, or ASC 606, we identify the performance obligations and allocate the total consideration we expect to receive on a relative standalone selling price basis to each performance obligation.
For elements of collaboration arrangements that are accounted for pursuant to Accounting Standards Codification Topic 606, Revenue from Contracts with Customers, or ASC 606, we identify the performance obligations and allocate the total consideration we expect to receive on a relative standalone selling price basis to each performance obligation.
Based on our current operating plan, we believe that our cash, cash equivalents and marketable securities as of December 31, 2022, together with the cash we expect to generate from product sales and under our current alliances, will be sufficient to satisfy our near-term capital and operating needs for at least the next 12 months from the filing of this Annual Report on Form 10-K.
Based on our current operating plan, we believe that our cash, cash equivalents and marketable securities as of December 31, 2023, together with the cash we expect to generate from product sales and under our current collaborations, will be sufficient to satisfy our near-term capital and operating needs for at least the next 12 months from the filing of this Annual Report on Form 10-K.
Net Revenues from Collaborations We earn revenue in connection with collaboration agreements which allow our collaboration partners to utilize our technology platforms and develop product candidates.
Net Revenues from Collaborations We earn revenue in connection with collaboration agreements which allow our collaborators to utilize our technology platforms and develop product candidates.
We currently have programs focused on a number of therapeutic areas and, as of December 31, 2022, we generate worldwide product revenues from four commercialized products, ONPATTRO, AMVUTTRA, GIVLAARI and OXLUMO, primarily in the U.S., Europe and Japan.
We currently have programs focused on a number of therapeutic areas and, as of December 31, 2023, we generate worldwide product revenues from four commercialized products, ONPATTRO, AMVUTTRA, GIVLAARI and OXLUMO, primarily in the U.S. and Europe.
A 10% increase or decrease in the transaction price impacts net revenues from collaborators by a corresponding increase or decrease of approximately $35.0 million.
A 10% increase or decrease in the transaction price impacts net revenues from collaborators by a corresponding increase or decrease of approximately $43.0 million.
We recognize revenue associated with each performance obligation as the control over the promised goods or services transfer to our collaboration partner which occurs either at a point in time or over time.
We recognize revenue associated with each performance obligation as the control over the promised goods or services transfer to our collaborator which occurs either at a point in time or over time.
"Business," of this Annual Report on Form 10-K, we currently have five products that have received marketing approval, including one partnered product, and multiple late-stage investigational programs advancing towards potential commercialization. In Part I, Item 1.
“Business” of this Annual Report on Form 10-K, we currently have five products that have received marketing approval, including one collaborated product, and multiple late-stage investigational programs advancing towards potential commercialization. In Part I, Item 1.
Please read Note 3 to our consolidated financial statements included in Part II, Item 8, “Financial Statements and Supplementary Data,” of this Annual Report on Form 10-K for balances and activity in each product revenue allowance and reserve category for the years ended December 31, 2022 and 2021.
Please see Note 3 to our consolidated financial statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K for balances and activity in each product revenue allowance and reserve category for the years ended December 31, 2023 and 2022.
Since we commenced operations in 2002, we have generated significant losses and as of December 31, 2022, we had an accumulated deficit of $6.57 billion. As of December 31, 2022, we had cash, cash equivalents and marketable securities of $2.19 billion, compared to $2.44 billion as of December 31, 2021.
Since we commenced operations in 2002, we have generated significant losses and as of December 31, 2023, we had an accumulated deficit of $7.01 billion. As of December 31, 2023, we had cash, cash equivalents and marketable securities of $2.44 billion, compared to $2.19 billion as of December 31, 2022.
"Business" you can also find a summary of key events in 2022 and 2023 to-date related to our marketed products and our clinical development programs. We have incurred significant losses since we commenced operations in 2002 and as of December 31, 2022, we had an accumulated deficit of $6.57 billion.
“Business” you can also find a summary of key events in 2023 and 2024 to-date related to our marketed products and our clinical development programs. We have incurred significant losses since we commenced operations in 2002 and as of December 31, 2023, we had an accumulated deficit of $7.01 billion.
Actual results could vary materially from these estimates. 91 Table of Contents Recent Accounting Pronouncements Please read Note 2 to our consolidated financial statements included in Part II, Item 8, “Financial Statements and Supplementary Data,” of this Annual Report on Form 10-K for a description of recent accounting pronouncements applicable to our business.
Actual results could vary materially from these estimates. 90 Table of Con tents Recent Accounting Pronouncements Please read Note 2 to our consolidated financial statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K for a description of recent accounting pronouncements.
A substantial portion of our total revenues in recent years has been derived from collaboration revenues from strategic alliances with Regeneron, Vir and Novartis.
A substantial portion of our total revenues in recent years has been derived from collaboration revenues from collaborations with Roche, Regeneron and Novartis.
As a result of planned expenditures for research and development activities relating to our research platform, our drug development programs, including clinical trial and manufacturing costs, the establishment of late-stage clinical and commercial capabilities, including global commercial operations, continued management and growth of our patent portfolio, collaborations and general corporate activities, we expect to incur additional operating losses, however we expect 2019 represents our peak operating loss year as we transition towards a self-sustainable financial profile.
As a result of planned expenditures for research and development activities relating to our research platform, our drug development programs, including clinical trial and manufacturing costs, the establishment of late-stage clinical and commercial capabilities, including global commercial operations, continued management and growth of our patent portfolio, collaborations and general corporate activities, we expect to incur additional operating losses.
We expect cost of goods sold will increase during 2023, as compared to 2022, primarily as a result of an expected increase in net product sales as well as increased royalties.
We anticipate variability in our cost of goods sold as a percentage of net product revenues in 2024, as compared to 2023. We expect our cost of goods sold will increase during 2024, as compared to 2023, primarily as a result of an expected increase in net product sales as well as increased royalties.
An increase or decrease of 5% to the interest rate would result in an increase or decrease to our liability related to the sale of future royalties of approximately $15.8 million.
An increase or decrease of 10% to the interest rate would result in an increase or decrease to our liability related to the sale of future royalties of approximately $33.9 million.
We expect that research and development expenses combined with selling, general and administrative expenses will increase during 2023, as compared to 2022, as we continue to advance and develop our platform and pipeline, advance our product candidates, including partnered programs, into later-stage development, prepare regulatory submissions and continue to build-out our global commercial and compliance infrastructure and field team to support ONPATTRO, GIVLAARI, OXLUMO, and the launch of AMVUTTRA in the U.S. and EU, as well as launch these products into additional markets, assuming regulatory approvals.
We expect that research and development expenses combined with selling, general and administrative expenses will increase during 2024, as compared to 2023, as we continue to advance and develop our platform and pipeline, advance our product candidates, including collaborated programs, into later-stage development, prepare regulatory submissions and continue to build-out our global commercial and compliance infrastructure as well as launch our commercial products into additional 87 Table of Con tents markets, assuming regulatory approvals.
We expect capital expenditures to increase in 2022 to support the increase in our manufacturing and production capacity needs. • Amounts related to future long-term debt total $1.02 billion, of which we do not expect to make payments on principal within the next 12 months. • Payments associated with the liability related to the sale of future royalties were approximately $3.4 million in 2022, with $40.3 million to be paid within the next 12 months.
We expect capital expenditures to increase in 2024 to support the increase in our manufacturing and production capacity needs. • Amounts related to future long-term debt total $1.02 billion, of which we do not expect to make payments on principal within the next 12 months. • Payments associated with the liability related to the sale of future royalties were approximately $21.6 million in 2023, with an estimated $58.2 million to be paid within the next 12 months. • Amount associated with the achievement of a development milestone payable to Blackstone was $84.5 million as of December 31, 2023, with $21.1 million to be paid within the next 12 months.
We use the expected value method, which is the sum of probability-weighted amounts in a range of possible consideration amounts, or the most likely amount method, which is the single most likely amount in a range of possible considerations, to estimate variable consideration related to our product revenues.
We are also subject to potential rebates in connection with our value-based agreements, or VBAs, with certain commercial payors. 89 Table of Con tents We use the expected value method, which is the sum of probability-weighted amounts in a range of possible consideration amounts, or the most likely amount method, which is the single most likely amount in a range of possible considerations, to estimate variable consideration related to our product revenues.
Recent and expected working and other capital requirements, in addition to the above matters, also include the items described below: • Amounts related to future lease payments for operating lease obligations at December 31, 2022 totaled $460.1 million, with $43.0 million expected to be paid within the next 12 months. • Our cash operating expenditures were $541.3 million in 2022 and $641.7 million in 2021, and we expect to increase our investment in operations in 2023. • Cash outflows for capital expenditures were $72.1 million in 2022 and $76.4 million in 2021.
Recent and expected working and other capital requirements, in addition to the above matters, also include the items described below: • Amounts related to future lease payments for operating lease obligations at December 31, 2023 totaled $418.0 million, with $43.6 million expected to be paid within the next 12 months.
The following table summarizes research and development expenses incurred, for which we recognize net revenue, that are directly attributable to our collaboration agreements, by collaboration partner: Year Ended December 31, (In thousands) 2022 2021 2020 Regeneron Pharmaceuticals $ 43,002 $ 73,411 $ 57,833 Other 1,172 15,575 35,300 Total $ 44,174 $ 88,986 $ 93,133 Selling, General and Administrative Selling, general and administrative expenses consist of the following: Year Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change Compensation and related $ 273,262 $ 224,237 $ 200,071 $ 49,025 22 % $ 24,166 12 % Consulting and professional services 226,941 201,841 176,097 25,100 12 % 25,744 15 % Stock-based compensation 138,488 97,302 79,409 41,186 42 % 17,893 23 % Occupancy and all other costs 131,967 97,259 132,843 34,708 36 % (35,584) (27) % Total $ 770,658 $ 620,639 $ 588,420 $ 150,019 24 % $ 32,219 5 % Selling, general and administrative expenses increased during the year ended December 31, 2022, as compared to the year ended December 31, 2021, primarily due to the following: • Increased compensation and related expenses as a result of increased headcount and other strategic investments in support of the global launch of AMVUTTRA and other expenses to support our strategic growth; • Increased stock-based compensation expense primarily due to the accounting for certain performance-based awards; and • Increased consulting and professional services expenses to support our commercial portfolio.
The following table summarizes research and development expenses incurred, for which we recognize revenue, that are directly attributable to our collaboration agreements, by collaborator: Year Ended December 31, (In thousands) 2023 2022 2021 Roche $ 44,620 $ — $ — Regeneron Pharmaceuticals 77,444 43,002 73,411 Other 4,951 1,172 15,575 Total $ 127,015 $ 44,174 $ 88,986 Selling, General and Administrative Selling, general and administrative expenses consist of the following: Year Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change Compensation and related $ 298,888 $ 273,262 $ 224,237 $ 25,626 9 % $ 49,025 22 % Consulting and professional services 226,664 226,941 201,841 (277) — % 25,100 12 % Occupancy and all other costs 145,687 131,967 97,259 13,720 10 % 34,708 36 % Stock-based compensation 124,407 138,488 97,302 (14,081) (10) % 41,186 42 % Total $ 795,646 $ 770,658 $ 620,639 $ 24,988 3 % $ 150,019 24 % Selling, general and administrative expenses increased during the year ended December 31, 2023, as compared to the year ended December 31, 2022, primarily due to increased headcount and other investments supporting our strategic growth including the global launch of AMVUTTRA.
Investing Activities Net cash provided by investing activities increased during the year ended December 31, 2022, compared to the year ended December 31, 2021, primarily due to net activities related to our marketable debt securities.
Investing Activities Net cash used in investing activities increased during the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to net activities related to our marketable debt securities as a result of an increase of cash invested in marketable debt securities.
Cost of collaborations and royalties Cost of collaborations and royalties increased during the year ended December 31, 2022, as compared to the year ended December 31, 2021, primarily due to timing and demand of GalNAc material supply to our collaboration partners to support certain product manufacturing and ongoing clinical trials.
Cost of collaborations and royalties Cost of collaborations and royalties increased during the year ended December 31, 2023, as compared to the year ended December 31, 2022, primarily due to increased demand of GalNAc material supplied to our collaborators to support certain product manufacturing and ongoing clinical trials and increased royalties payable to third parties on the net sales of licensed products by Novartis.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS 84 Table of Contents Overview We are a global commercial-stage biopharmaceutical company that discovers, develops, manufactures and commercializes novel therapeutics based on RNAi.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Overview We are a global commercial-stage biopharmaceutical company that discovers, develops, manufactures and commercializes novel therapeutics based on RNAi. Our commercial products and broad pipeline of investigational RNAi therapeutics are focused in rare, specialty and select prevalent indications. As described in Part I, Item 1.
Operating Costs and Expenses Operating costs and expenses consist of the following: Year Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change Cost of goods sold $ 140,174 $ 115,005 $ 74,185 $ 25,169 22 % $ 40,820 55 % Cost of goods sold as a percentage of net product revenues 15.7 % 17.4 % 20.5 % Cost of collaborations and royalties 28,643 25,139 3,867 3,504 14 % 21,272 550 % Research and development 883,015 792,156 654,819 90,859 11 % 137,337 21 % Selling, general and administrative 770,658 620,639 588,420 150,019 24 % 32,219 5 % Total $ 1,822,490 $ 1,552,939 $ 1,321,291 $ 269,551 17 % $ 231,648 18 % Cost of Goods Sold Cost of goods sold as a percentage of net product revenues decreased to 15.7% for the year ended December 31, 2022, as compared to 17.4% for the year ended December 31, 2021, primarily due to an increase in sales of products with a lower cost to manufacture.
Operating Costs and Expenses Operating costs and expenses consist of the following: Year Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change Cost of goods sold $ 268,216 $ 140,174 $ 115,005 $ 128,042 91 % $ 25,169 22 % Cost of goods sold as a percentage of net product revenues 21.6 % 15.7 % 17.4 % Cost of collaborations and royalties 42,190 28,643 25,139 13,547 47 % 3,504 14 % Research and development 1,004,415 883,015 792,156 121,400 14 % 90,859 11 % Selling, general and administrative 795,646 770,658 620,639 24,988 3 % 150,019 24 % Total $ 2,110,467 $ 1,822,490 $ 1,552,939 $ 287,977 16 % $ 269,551 17 % Cost of Goods Sold Cost of goods sold as a percentage of net product revenues increased to 21.6% for the year ended December 31, 2023, as compared to 15.7% for the year ended December 31, 2022, primarily due to the following: • Increased volume and rate of royalties payable on net sales of AMVUTTRA.
Research and Development Research and development expenses consist of the following: Year Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change Clinical research and outside services $ 438,418 $ 418,985 $ 307,378 $ 19,433 5 % $ 111,607 36 % Compensation and related 225,589 196,134 190,705 29,455 15 % 5,429 3 % Occupancy and all other costs 126,847 108,622 96,272 18,225 17 % 12,350 13 % Stock-based compensation 92,161 68,415 60,464 23,746 35 % 7,951 13 % Total $ 883,015 $ 792,156 $ 654,819 $ 90,859 11 % $ 137,337 21 % Research and development expenses increased during the year ended December 31, 2022, as compared to the year ended December 31, 2021, primarily due to the following: 87 Table of Contents • Increased compensation and related expenses as a result of increased headcount to support our R&D pipeline and development expenses; • Increased stock-based compensation expense primarily due to the accounting for certain performance-based awards; and • Increased clinical research and outside services expenses primarily due to increase in clinical batches manufactured and development expenses associated with the KARDIA-1 and KARDIA-2 zilebesiran phase 2 studies.
We expect our cost of collaborations and royalties will decrease during 2024, as compared to 2023, primarily due to a decrease in demand of GalNAc material supplied to our collaborators in support of certain product manufacturing as our collaborators begin to transition to producing the material independently. 86 Table of Con tents Research and Development Research and development expenses consist of the following: Year Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change Clinical research and outside services $ 485,732 $ 438,418 $ 418,985 $ 47,314 11 % $ 19,433 5 % Compensation and related 260,423 225,589 196,134 34,834 15 % 29,455 15 % Occupancy and all other costs 160,987 126,847 108,622 34,140 27 % 18,225 17 % Stock-based compensation 97,273 92,161 68,415 5,112 6 % 23,746 35 % Total $ 1,004,415 $ 883,015 $ 792,156 $ 121,400 14 % $ 90,859 11 % Research and development expenses increased during the year ended December 31, 2023, as compared to the year ended December 31, 2022, primarily due to the following: • Increased compensation and related expenses as a result of increased headcount to support our R&D pipeline and development expenses; • Increased clinical research and outside services primarily associated with zilebesiran as we reached full enrollment for our KARDIA-1 and KARDIA-2 clinical studies and additional costs associated with manufacturing batches associated with those clinical activities.
Results of Operations The following data summarizes the results of our operations: Year Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change Total revenues $ 1,037,418 $ 844,287 $ 492,853 $ 193,131 23 % $ 351,434 71 % Operating costs and expenses $ 1,822,490 $ 1,552,939 $ 1,321,291 $ 269,551 17 % $ 231,648 18 % Loss from operations $ (785,072) $ (708,652) $ (828,438) $ (76,420) 11 % $ 119,786 (14) % Net loss $ (1,131,156) $ (852,824) $ (858,281) $ (278,332) 33 % $ 5,457 (1) % For discussion of our 2021 results and a comparison with 2020 results please refer to "Management's Discussion and Analysis of Financial Conditions and Results of Operations" in our Annual Report on Form 10-K for the fiscal year ended December 31, 2021 that was filed with the SEC on February 10, 2022.
Such collaborations include, or may include in the future, license and other fees, funded research and development, milestone payments and royalties on product sales by our licensors, including royalties on sales of Leqvio made by our collaborator, Novartis, as well as proceeds from the sale of equity or debt. 83 Table of Con tents Results of Operations The following data summarizes the results of our operations: Year Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change Total revenues $ 1,828,292 $ 1,037,418 $ 844,287 $ 790,874 76 % $ 193,131 23 % Operating costs and expenses $ 2,110,467 $ 1,822,490 $ 1,552,939 $ 287,977 16 % $ 269,551 17 % Loss from operations $ (282,175) $ (785,072) $ (708,652) $ 502,897 (64) % $ (76,420) 11 % Net loss $ (440,242) $ (1,131,156) $ (852,824) $ 690,914 (61) % $ (278,332) 33 % For discussion of our 2022 results and a comparison with 2021 results please refer to “Management’s Discussion and Analysis of Financial Conditions and Results of Operations” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022 that was filed with the SEC on February 23, 2023.
Financing Activities Net cash provided by financing activities decreased during the year ended December 31, 2022, compared to the year ended December 31, 2021, primarily due to greater cash received in 2021, including $500.0 million received from our sale of one-half of our royalty interest under the Novartis agreement in September 2021 and $500.0 million received in connection with the second and final drawdowns on our credit agreement in June 2021 and December 2021, respectively, offset by $136.2 million 89 Table of Contents received from the issuance of convertible debt, net of repayment of credit facility and purchase of capped call transactions in September 2022.
Financing Activities Net cash provided by financing activities decreased during the year ended December 31, 2023, compared to the year ended December 31, 2022, primarily due to greater cash received in 2022, including $136.2 million received from the issuance of convertible debt, net of repayment of the credit facility held with Blackstone and purchase of capped call transactions in September 2022, and greater net proceeds from the issuance of common stock in connection with stock option exercises and other types of equity. 88 Table of Con tents Additional Capital Requirements We currently have programs focused on a number of therapeutic areas and, as of December 31, 2023, have received regulatory approval and commercially launched four products.
Net Revenues from Collaborations and Royalty Revenue Net revenues from collaborations consist of the following: Years Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change Regeneron Pharmaceuticals $ 87,844 $ 113,226 $ 74,072 $ (25,382) (22) % $ 39,154 53 % Novartis AG 43,159 49,120 22,208 (5,961) (12) % 26,912 121 % Vir Biotechnology 1,755 16,897 31,396 (15,142) (90) % (14,499) (46) % Other 2,154 1,710 3,657 444 26 % (1,947) (53) % Total $ 134,912 $ 180,953 $ 131,333 $ (46,041) (25) % $ 49,620 38 % Net revenues from collaborations decreased during the year ended December 31, 2022, as compared to the year ended December 31, 2021, primarily due to a decrease in revenue recognized in connection with our collaboration agreements with Regeneron and Vir, attributed to reduced research and manufacturing activities and timing of reimbursable activities. 86 Table of Contents Royalty revenue increased during the year ended December 31, 2022, as compared to the year ended December 31, 2021, primarily due to increased global net sales of Leqvio by our partner, Novartis.
Net Revenues from Collaborations and Royalty Revenue Net revenues from collaborations and royalty revenue consist of the following: Years Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change Roche $ 337,802 $ — $ — $ 337,802 N/A $ — N/A Regeneron Pharmaceuticals 100,468 87,844 113,226 12,624 14 % (25,382) (22) % Novartis AG 86,727 43,159 49,120 43,568 101 % (5,961) (12) % Other 21,188 3,909 18,607 17,279 442 % (14,698) (79) % Total net revenues from collaborations $ 546,185 $ 134,912 $ 180,953 $ 411,273 305 % $ (46,041) (25) % Royalty revenue $ 40,633 $ 8,177 $ 1,196 $ 32,456 397 % $ 6,981 * Net revenues from collaborations increased during the year ended December 31, 2023, as compared to the year ended December 31, 2022, primarily due to revenue recognized under our agreements with Roche and Novartis.
However, we expect that certain expenses will be variable depending on the timing of manufacturing batches, clinical trial enrollment and results, regulatory review of our product candidates and programs, and stock-based compensation expenses due to our determination regarding the probability of vesting for performance-based awards. 88 Table of Contents Other (Expense) Income Other (expense) income consists of the following: Year Ended December 31, 2022 vs 2021 2021 vs 2020 (In thousands, except percentages) 2022 2021 2020 $ Change % Change $ Change % Change Interest expense $ (155,968) $ (143,021) $ (84,496) $ (12,947) 9 % $ (58,525) 69 % Other (expense) income, net Interest income 24,808 1,579 11,809 23,229 1,471 % (10,230) (87) % Realized and unrealized (losses) gains on marketable equity securities (33,312) 55,695 54,042 (89,007) (160) % 1,653 3 % Change in fair value of development derivative liability (94,659) (38,433) (17,185) (56,226) 146 % (21,248) 124 % Other (6,204) (19,312) 8,668 13,108 (68) % (27,980) (323) % Loss on the extinguishment of debt (76,586) — — (76,586) N/A — N/A Total $ (341,921) $ (143,492) $ (27,162) $ (198,429) 138 % $ (116,330) 428 % Total other expense increased during the year ended December 31, 2022, as compared to the year ended December 31, 2021, primarily due to a $76.6 million loss on the extinguishment of the Blackstone credit agreement, increased realized and unrealized losses on our marketable equity securities holdings, and increased loss as a result of a mark-to-market adjustment related to the development derivative liability.
Other (Expense) Income Other (expense) income consists of the following: Year Ended December 31, 2023 vs 2022 2022 vs 2021 (In thousands, except percentages) 2023 2022 2021 $ Change % Change $ Change % Change Interest expense $ (121,221) $ (155,968) $ (143,021) $ 34,747 (22) % $ (12,947) 9 % Other expense, net Interest income 95,561 24,808 1,579 70,753 285 % 23,229 * Realized and unrealized (losses) gains on marketable equity securities (16,944) (33,312) 55,695 16,368 (49) % (89,007) (160) % Change in fair value of development derivative liability (90,997) (94,659) (38,433) 3,662 (4) % (56,226) 146 % Other (17,741) (6,204) (19,312) (11,537) 186 % 13,108 (68) % Loss on the extinguishment of debt — (76,586) — 76,586 (100) % (76,586) N/A Total $ (151,342) $ (341,921) $ (143,492) $ 190,579 (56) % $ (198,429) 138 % * Indicates the percentage change period over period is greater than 500%.
We expect variability in net revenues from collaboration and royalty revenue in 2023, as compared to 2022, due to the timing of manufacturing activities, achievement of milestones under our collaboration agreements and royalties associated with sales of Leqvio.
Royalty revenue increased during the year ended December 31, 2023, as compared to the year ended December 31, 2022, due to increased royalties earned from global net sales of Leqvio by our collaborator, Novartis.