Operating loss for the fourth quarter of 2023 decreased to a loss of $2.2 million, compared to an operating loss of $2.7 million in the fourth quarter of 2022.
Net loss was $1.0 million for the fourth quarter of 2023, compared to a net loss of $4.9 million in the fourth quarter of 2022. The basic and diluted net loss per share for the fourth quarter 2023 was $1.47, compared to net loss per share of $8.66 in the fourth quarter 2022.
Full Year 2023 Financial Results
Total revenue for the full year 2023 was $644 thousand, compared to $787 thousand for the full year 2022, due to lower Canada product sales resulting from the prior year inclusion of approximately $120 thousand of revenue recognized in connection with the delivery PoNS devices related to noncash consideration paid in the Company’s acquisition of Heuro.
Cost of revenue for the full year 2023 increased $120 thousand to $583 thousand, compared to cost of revenue of $463 thousand for the full year 2022, primarily attributable to fixed overhead costs, including salaries and benefits of employees involved in management of the supply chain and certain production costs.
Gross profit for the full year 2023 was $61 thousand, compared to gross profit of $324 thousand for the full year 2022.
Selling, general, and administrative expenses for the full year 2023 decreased to $9.3 million, compared to $10.6 million for the full year 2022, due primarily to a $0.6 million decrease in stock-based compensation and a $0.6 million decrease in payroll taxes including the $0.5 million Employee Retention Credit claims we filed for the prior eligible periods.
Research and development expenses for the full year 2023 decreased to $2.9 million, compared to $4.3 million for the full year 2022, due primarily to decreases in product development expenses and clinical trial activities as we transitioned our focus from product development and clinical trials to U.S. commercialization activities beginning in 2022.
Operating loss for the full year 2023 decreased $3.1 million to a loss of $12.4 million, compared to a loss of $15.5 million for the full year 2022.
Net loss for the full year 2023 was $8.9 million, compared to $14.1 million for the full year 2022. The basic and diluted net loss per share for the full year 2023 was $14.56 per share, compared to $52.13 per share, for the full year 2022.
Cash and Liquidity
Cash used in operating activities for the three months ended December 31, 2023, was $2.0 million, compared to $2.1 used in operating activities in the fourth quarter of 2022, reflecting the results of our continued focus on managing cash burn.
As of December 31, 2023, the Company had cash of $5.2 million, compared to $14.5 million at December 31, 2022. In Q1 2024, the Company generated $1.3 million of net proceeds from the