There were no revenue for the Q4 year ended December 31, 2022. Cost of sales for the 4th quarter year end December 31, 2023, was $4,400,000 $10,800,000 respectively, and comprised of cost of inventory associated with sales of producting as well as $3,900,000 and $9,700,000 respectively of non cash amortization expenses for the acquired intangible assets for developed technology. There were no cost of revenue for the Q4 year ended December 31, 2022. Research and development expenses were $87,500,000 for the Q4 ended December 31, 2023, an increase of $6,900,000 compared to $80,600,000 for the same period ended December 31, 2022. Research and development expenses were $344,100,000 for the year ended December 31, 2023, an increase of $49,300,000 compared to $294,800,000 for the same period ended December 31, 2022.