Thank you, William. Hello, everyone. Total revenue for the three months ended December 31, 2022 was $86.6 million, representing year-over-year growth of 15% on a reported basis and 18% on a constant currency basis. For the full year 2022, total revenue was $335.6 million, which represents 17% growth on a reported basis and 20% growth on a constant currency basis. Excluding Pinnacle 21, full year 2022 growth was 12% on a constant currency basis. Note that we have owned Pinnacle 21 for more than a full year as of October 2022, and we will be reporting the business as part of our consolidated financials going forward. Bookings, which provides visibility into the year ahead, came in at $408.9 million for the trailing 12 month period ended December 31, 2022 and were up 20% year-over-year. Our total company book to bill ratio ended the year at 1.22. Software revenue was $29.2 million in the fourth quarter, which increased 14% over the prior period on a reported basis and 19% on a constant currency basis. The growth in the quarter was driven by Pinnacle 21 new products and biosimulation software. For the full year, software revenue was one $115.5 million, up 33% on a reported basis and 38% on a constant currency basis. Excluding Pinnacle 21, full year software revenue grew 14% on a constant currency basis. Ratable and subscription software revenue amounted to 60% of total software revenue for the year, up from 54% in the prior year. Subscription ratable revenue accounted for 67% of the fourth quarter revenues. Software bookings were $39.5 million in the fourth quarter, which increased 22% from the prior year period. Trailing 12 months software bookings were $124.8 million, up 32% year-over-year. The software aggregate renewal rate was 88% in the fourth quarter, down due to timing but resulting in a 91% rate for the year, which is in line with our plan. Services revenue was $57.5 million in the fourth quarter, which increased 15% over the prior year period on a reported basis and 18% on a constant currency basis. For the full year, services revenue was $220.2 million, up 10% on a reported basis and 13% on a constant currency basis. As we previously discussed, biosimulation services revenue growth remained strong in 2022 and was 20% while regulatory services was a drag on the overall growth rate. Technology driven services bookings in the fourth quarter were $80.9 million, which increased 1% from the prior year period. Trailing 12 month services bookings were $284.1 million, which increased 15% as compared to the prior year. As expected, regulatory services bookings growth was down in the quarter while biosimulation booking trends continued to be strong. The cost of revenue for the fourth quarter of 2022 was $31.8 million, an increase from $29.3 million in the fourth quarter of 2021, primarily due to $3.5 million increase in employee related costs, $1.1 million increase in other costs of revenues, such as equipment, travel and software licenses, offset by lower stock based compensation and outside consulting costs of $1.6 million. Total operating expenses for the fourth quarter of 2022 were $43.5 million, an increase from $42.6 million in the fourth quarter of 2021. The components of operating expenses are as follows. Sales and marketing expenses were $7.8 million compared to $6.7 million for the fourth quarter of 2021. This increase is primarily due to $0.6 million in employee expenses due to the expansion of the sales force and $0.5 million increases in marketing and travel costs. R&D expenses were $6.6 million compared to $6.5 million for the fourth quarter of 2021. R&D expenses were up slightly due to R&D expense from acquisitions in 2021 and the timing of other related investments in research and development. G&A expenses were $18.3 million compared to $18.7 million for the fourth quarter of 2021. The decrease was primarily due to $1.8 million decrease in transaction and M&A costs, $1.5 million decrease in stock based compensation, offset by $2.2 million of employee related costs. Intangible asset amortization was up slightly at $10.3 million compared to $10.2 million in the fourth quarter of 2021. Depreciation and amortization expense was $0.4 million flat with last year. Continuing down the P&L, interest expense was $5.4 million compared to $3.3 million for the fourth quarter of 2021 due to higher interest expense relating to our term loan. Miscellaneous expense was $2.2 million compared to $0.3 million for the fourth quarter of 2021 due primarily to $2.5 million in remeasurement loss related to fluctuation and foreign currency exchange rates. The income tax benefit was $5.4 million, bringing the full year provision to $4 million compared to $9.9 million in the prior full year as a result of a change in the mix of earnings among jurisdictions, the impact of non-recurring income tax rate changes and the tax planning project completed in the second half of 2022 to take the benefit of previously unrecognized foreign tax credits. Net income for the fourth quarter of 2022 was $9.2 million compared to a net loss of $9.7 million in the fourth quarter of 2021. Reported adjusted EBITDA for the fourth quarter of 2022 was $31.9 million compared to $28.2 million for the fourth quarter of 2021, representing 13% growth. Adjusted EBITDA margin was 36.8% in the fourth quarter of 2022 and 35.8% for the full year of 2022. Reported adjusted net income for the fourth quarter of 2022 was $25.2 million compared to $9.8 million for the fourth quarter of 2021. Diluted earnings per share for the fourth quarter of 2022 was $0.06 as compared to a loss of $0.06 in the fourth quarter of 2021. Adjusted diluted earnings per share for the fourth quarter of 2022 was $0.16 compared to $0.06 in the fourth quarter of 2021. Now moving to the balance sheet. We ended the quarter with $236.6 million of cash and cash equivalents. As of December 31, 2022, we had $297.5 million of outstanding borrowings on our term loan and full availability under our revolving credit facility. Turning to the guidance. For the full year 2023, we expect total revenue in the range of $370 million to $385 million, representing 10% to 15% growth compared with 2022. Our revenue guidance assumes continued strength in software and biosimulation services where we have good visibility given our trailing 12 month bookings. The guidance also assumes regulatory services growth in the low single digits as compared to 2022, and software subscription revenue continues to rise to increase as a percentage of total software revenues. We expect adjusted EBITDA in the range of $131 million to $137 million, adjusted EPS in the range of $0.50 to $0.55 per share, fully diluted shares in the range of $159 million to $152 million, a tax rate in the range of 25% to 30%. And one last thing before we turn the call over to questions. With today's announcement, I want to take the opportunity to welcome John to Certara. John has an impressive background and his experience with Cue Health and Beckman Dickinson have prepared him well for the opportunity with Certara. Over the past nine years, Certara has evolved and grown significantly. Since becoming public, we have put a long term strategic plan in place that the team has been successfully executing against. After six years as a private company CFO and two years as a public company CFO, now is a good time to transition CFO responsibilities to someone else. Following a transition period that will ensure a smooth and orderly transition of responsibilities to John, I intend to remain with Certara and focus on operations and growth initiatives. I'll now turn the call back over to our CEO, William Feehery, for closing remarks.