Thanks, Chris, and thank you everyone for joining us today. Before I begin, I'd like to remind everyone that we have posted a presentation to our investor relations website with supplemental financial information to accompany today's presentation. As Tim mentioned, we are pleased to report that our Q4 performance was within our previously issued guidance for advertiser spend, growth, revenue, and contribution ex-TAC, and for the quarter we exceeded the high end of our previously issued adjusted EBITDA guidance by 160%. I will talk more about this in a moment, but during the quarter we remained extremely focused on driving operational efficiencies in the business, which we believe sets us up for meaningful adjusted EBITDA profitability in 2023. For the fourth quarter advertiser spend across our platform decreased 13% over the prior year while increasing 9% over Q3. For the full year advertiser spend increased 15% year-over-year. In the fourth quarter, revenue was $54.5 million, a decrease of 34% versus the prior year period and an increase of 12% versus Q3 for the year revenue totaled to $197.2 million, representing a decrease of 12% year-over-year. Contribution ex-TAC for the fourth quarter was $33.4 million, a decrease of 31% versus the prior year period and an increase of 4% over Q3 for the year contribution ex-TAC totaled to $124.7 million, representing a year-over-year de decrease of 12%. There are several key points I'd like to highlight relative to both Q4 and the full year 2022 top line performance. To begin with. We started 2022 with accelerating growth and spend across our platform advertiser spending Q1 increased 44% well above industry growth rates. That momentum continued in Q2 and we again saw strong growth of 32% for the quarter. We began seeing the early stages of a pullback and spend by some of our clients in June due to macroeconomic concerns that pullback continued in Q3 with growth and spend slowing to 19%, and ultimately these challenging conditions resulted in spend declining year-over-year in Q4. In terms of customer verticals, as we discussed on our last earnings call in Q4 2021, we did exceptionally well in the jobs and employment customer vertical. These customers spent significantly to close out 2021 in an effort to capitalize on the heightened demand for mark for Labor, leveraging our fixed price pricing option. In Q4 2022, customers across this vertical reduced their spend by more than 95% as labor markets cooled. This dynamic alone contributed to about half of the revenue decline and well over 40% of the decline in contribution ex-TAC in Q4. The good news is that we do not expect any continued weakness across this vertical. To have a material impact on 2023 as spend throughout 2022 across this vertical was de minimus due to the changes in the labor market. In terms of other notable customer verticals, I'd first like to touch on our largest customer vertical retail. As we mentioned, last quarter growth across this vertical began slowing in Q3 and that trend continued in Q4 with retail spend down year-over-year in the quarter. In contrast, our travel and gaming verticals continued to perform exceptionally well despite the macro weakness with both posting strong growth in Q4 and for the first time in several quarters, our CPG and automotive verticals showed solid growth during the quarter. In terms of advertising formats and channels, video, which includes CTV continues to represent over 60% of advertiser spend on the platform. As Chris mentioned, streaming audio and digital out of home continued to perform exceptionally well in the quarter with more and more customers engaging with these emerging channels. We ended the year with 326 active customers, an increase of 6% or 17 net new customers on a year-over-year basis. Advertisers spend per active customer also increased 9% on year-over-year basis, and percent of spent customers spent on average nearly three times more than fixed price customers in 2022. Non-GAAP operating expenses, which are defined as the difference between contribution ex-TAC and adjusted EBITDA totaled $30.7 million in the quarter, representing a year-over-year de decrease of 1% and a quarter over quarter decrease of 9% during the quarter. We prudently managed costs reducing our workforce by approximately 13% in December, and significant leaker tailing our discretionary spending. As Chris mentioned at the same time, we continued investing in our product and engineering teams to further advance our efforts towards our goal of developing an auto autonomous advertising platform. Our actions in Q4 realigned our costs with our top priorities for 2023. For the fourth quarter, we generated adjusted EBITDA $2.6 million, which exceeded the midpoint of our guidance by approximately $3 million. The better than expected result is due to the previously mentioned cost optimization actions that we took during the second half of the year. From a liquidity perspective, we ended the quarter with $207 million in cash for $3.35 per share outstanding. We also had $228 million of positive working capital and no debt. We believe our strong balance sheet positions us extremely well to take advantage of the significant market opportunity in front of us. With that, I'll now turn to our guidance for Q1 and I'll provide some color on our full year 2023 expectations. Many of our customers are navigating a challenging macroeconomic environment, which creates a volatile demand environment. Given this uncertainty, we believe there could be a wider range of outcomes for Q1, which was reflected in our Q1 guidance. For the first quarter of 2023, we expect revenue in the range of $39 million to $42 million, which re represents a year-over-year decline of 5% at the midpoint of guidance contribution ex-TAC in the range of $25.-- $27.5 million, which represents a year-over-year decline of 4% at the midpoint of guidance; non-GAAP operating expenses of approximately $30 million, which represents a year-over-year decline of 5% and a quarter over quarter decline of 2%. An adjusted EBITDA in the range of negative $2.5 million to negative $4.5 million. Couple of general observations about our guide for Q1 and our outlook for the year Q1 2022 was a strong quarter for variant, creating a tough comp for the current quarter. As I mentioned earlier, in Q1 of last year, we saw 44% growth in ad spend across the platform. As we move through 2023 year-over-year comps will become easier as we began seeing the impact of the macro weakness beginning in June of last year. As such, we expect improving revenue and contribution exec growth rates as we move through the year. We also expect the adjusted EBITDA increase each quarter as we move through 2023, driven by the cost reduction initiatives in the second half of 2022 and increasing revenue and contribution ex-TAC, we intend to closely manage expenses in 2023 while continuing to make focused strategic investments with the goal of generating meaningful positive EBITDA in 2023. In closing, while macroeconomic uncertainties are contributing to a challenging market, we continue to be encouraged by the increasing adoption of our platform and we remain confident in our ability to deliver long-term top line growth and EBITDA expansion. We believe our points of differentiation will enable us to successfully capitalize on the growing market opportunity in front of us. We are confident that our strong balance sheet, strategic investments in technology and discipline cost management during these challenging times position us to continue growing our market share in this fast growing programmatic market. That concludes our prepared remarks today. And with that I will now turn it back over to the operator to open the video to questions. Operator?