Loss from operations in the fourth quarter of 2023 was $38.6 million, compared to operating loss of $33.7 million in the fourth quarter of 2022. Non-GAAP loss from operations in the fourth quarter of 2023 was $32.4 million, compared to non-GAAP operating loss of $27.4 million in the fourth quarter of 2022.
Net loss in the fourth quarter of 2023 was $36.8 million, or ($0.75) per diluted share, compared to net loss of $31.5 million, or ($0.66) per diluted share, in the fourth quarter of 2022. Non-GAAP net loss in the fourth quarter of 2023 was $30.6 million, or ($0.63) per diluted share, compared to non-GAAP net loss of $25.1 million, or ($0.53) per diluted share, in the fourth quarter of 2022.
Included in non-GAAP loss from operations, non-GAAP net loss and non-GAAP EPS for the fourth quarter of 2023 is an acquired in-process R&D (IPR&D) charge of $2.0 million, which caused the non-GAAP loss per diluted share to have an additional loss of ($0.05) in the fourth quarter of 2023.
Full Year 2023 Financial Results
Net sales in 2023 of $314.7 million increased 11% on a reported basis, or 12% on a constant currency basis, compared to $282.9 million in 2022.
Gross margin for 2023 was approximately 76%, compared to approximately 76% in 2022. Non-GAAP gross margin for 2023 was approximately 83%, compared to approximately 83% in 2022.
SG&A expenses in 2023 increased 16% to $224.1 million, compared to $192.9 million in 2022. Non-GAAP SG&A expenses in 2023 increased 17% to $221.2 million, compared to $189.6 million in 2022.
R&D expenses in 2023 rose 13% to $138.8 million, compared to $123.3 million in 2022. Non-GAAP R&D expenses in 2023 rose 13% to $138.8 million, compared to $123.1 million in 2022.
Loss from operations in 2023 was $128.7 million, compared to operating loss of $82.3 million in 2022. Non-GAAP loss from operations in 2023 was $103.8 million, compared to non-GAAP operating loss of $86.7 million in 2022.
Net loss in 2023 was $134.7 million, or ($2.78) per diluted share, compared to net loss of $99.2 million, or ($2.09) per diluted share, in 2022. Non-GAAP net loss in 2023 was $109.7 million, or ($2.27) per diluted share, compared to non-GAAP net loss of $103.6 million, or ($2.18) per diluted share, in 2022.
During 2022, the company received a $30 million payment related to the company’s settlement of patent litigation with Ivantis, Inc. This receipt was recorded as an offset to GAAP operating expenses in 2022.
Included in non-GAAP loss from operations, non-GAAP net loss and non-GAAP EPS for 2023 and 2022 are acquired IPR&D charges of $5.0 million and $10.0 million, respectively, which caused the non-GAAP loss per diluted share to have an additional loss of ($0.11) and ($0.21) in each of these respective periods.
The company ended the fourth quarter of 2023 with approximately $301 million in cash and cash equivalents, short-term investments and restricted cash.
2024 Revenue Guidance
The company expects 2024 net sales to be in the range of $350 million to $360 million based on the latest foreign currency exchange rates.
Webcast & Conference Call
The company will host a conference call and simultaneous webcast today at 1:30 p.m. PT (4:30 p.m. ET) to discuss the results and provide additional information about the company’s financial outlook. A link to