Bonnie Moav
Thank you, Ben. Revenues for the fourth quarter 2022 reached $2.1 million compared to $1.1 million for the fourth quarter of 2021. Growth was primarily driven by growth in our core connected vehicle data and the contribution of The Floow revenue.
Before I move further into the numbers, I want to remind you that our non-GAAP item consists of stock-based compensation expenses, restructuring expenses, depreciation, amortization of acquired intangible assets, contingent liability income related to The Floow acquisition and impairment of intangible and goodwill. Non-GAAP information is presented excluding these items. Our GAAP financial results, along with the reconciliation between GAAP and non-GAAP results, can be found in our earnings release.
I will now turn to the detailed financial results for the quarter. Our GAAP operating loss for Q4 2022 was $17.2 million, including a restructuring cost of $2.2 million in transaction costs of $1.9 million compared to $16.2 million in the fourth quarter of 2021.
In the fourth quarter, non-GAAP operating loss was $13.8 million, including transaction costs of $1.9 million compared to $14 million for the fourth quarter of 2021. Our cloud infrastructure expenses consist primarily of costs related to a third-party cloud services, which decreased by 12% from $1.1 million in Q4 2021 to $0.9 million in Q4 2022. The decrease is attributed to the efficiency measures the company adopted to reduce costs.
Cost of services includes purchasing of data of $0.7 million, an increase of 148% year-over-year, which reflects the cost we paid to the OEMs and other data provider for their data using our products. In addition, $0.4 million is related to the cost of services provided to our customers.
Our research and development expenses and our sales and marketing expenses for the fourth quarter of 2022 were $6.2 million and $5.9 million, which increased by 29% and 36%, respectively, year-over-year, mainly due to the workforce growth in connection with The Floow acquisition. The increase in workforce does not reflect yet the recent restructuring process, which will take effect in 2023.
General and administrative expenses for the fourth quarter of 2022 were $6.4 million compared to $6.3 million in the same period a year ago. The current quarter expenses include $1.9 million in transaction costs. If excluded, it reflects a reduction of 29% quarter-over-quarter, mainly due to reduction in D&O insurance costs and management bonus.
During the fourth quarter, the company started a process of cost reduction, including head reduction of approximately 100 employees worldwide. This process will be completed by the end of the first quarter of 2023 and is expected to result in substantial cost savings.
Turning to the balance sheet. We ended up the quarter with $140.6 million in cash, cash equivalents, short-term investments, restricted cash and long-term investments, a decrease of $67.5 million from year-end 2021. This was mainly driven by $12 million in cash used for The Floow acquisition and $55.5 million in cash used for operating activities.
And now I will turn it back over to Ben.
Ben Volkow
As highlighted in today’s call, Q4 and the full year 2022 had great progress and challenges to overcome for Otonomo. Exiting the year, we believe that we are well positioned from a capital standpoint to adjust to the rate of market adoption we are experiencing. Growing our ecosystem of partners and creating strategic highly scalable partnerships and laser focused on segments we believe will scale.
Our momentum is carried into 2023 as we started the year with a bang. Third, the class action lawsuit filed last April against Otonomo has been dismissed. You may remember the strange lawsuit claimed at Otonomo, a fixed hardware tracking devices to BMW vehicles in the U.S. Well, we believe that the dismissal of this lawsuit highlights both the base service of the plaintiff complaint as much as it reinforces the importance that Otonomo press on data privacy. We are pleased with the outcome of this important step in our efforts to resolve this matter and defend Otonomo’s reputation and position in the industry.