Thank you, Simon, and good afternoon, everyone. As expected and consistent with last quarter, net revenue and gross profit contracted due to the Cash App renewal with the majority of the renewal impact on revenue resulting from the revenue presentation change. Q4 was a strong finish to the year with TPV growth of 33% and better-than-expected results for net revenue, gross profit and expense driving positive adjusted EBITDA. Net revenue and gross profit outperformed due to stronger-than-expected TPV growth, particularly in BNPL, on-demand delivery and accelerated wage access, as well as higher network incentives, continued execution of efficiency initiatives, such as streamlining technology spend as well as delays in planned investments, coupled with higher gross profit led to $3 million of adjusted EBITDA in the quarter. I will share the Q4 highlights before spending more time detailing our expectations for 2024. Q4 TPV was $62 billion, growing 33% for the third straight quarter. Non-Block TPV grew approximately 10 points faster than Block growth. The financial services vertical continues to grow a little faster than the overall company, helped by the rapid ramping of accelerated wage access TPV, which now contributes about 3% of total company TPV. Lending, including buy now pay later grew several points faster than the overall company due to a strong holiday season and the continued adoption of our BNPL customers pay anywhere card solutions. On-demand delivery continues to grow in the double digits due to consumer adoption of new services and merchant segments, as well as geographic expansion. Expense management growth reaccelerated this quarter, but it's growing a little slower than the overall company as this vertical matures. Q4 net revenue was $119 million, a contraction of 42% year-over-year. The key drivers of our net revenue growth are as follows. The most significant impact was the 59 point growth headwind related solely to the revenue presentation change resulting from the Cash App renewal. As we've described previously, this change in revenue presentation is related to the costs associated with Cash App's primary payment network volume. Previously, the bank and network fees associated with the primary network volume were included in net revenue and cost of revenue. Starting in Q3 2023, these costs are netted against revenue. There's an additional 10 percentage point decline in net revenue growth due to the Cash App renewal pricing. Non-Block revenue growth accelerated by more than 5 points as we begin to lap prior year renewals and newer, faster-growing solutions such as BNPL, pay anywhere cards and accelerated wage access increase in their contribution. Block net revenue concentration was 51% in Q4, increasing 1 point from Q3 due to seasonality. Our net revenue take rate remains unchanged from last quarter at 19 bps. Excluding Cash App, the net revenue take rate has remained consistent over the last three quarters despite the lower take rate powered by Marqeta TPV growing faster than managed by as we continue to move beyond the period of heavy renewal activity. Q4 gross profit was $83 million, contracting 4%. Similar to net revenue, gross profit growth, excluding Block, also accelerated by more than 5 points. Three factors continue to weigh on gross profit growth. First, the Cash App renewal lowered growth by mid-20 percentage points. As a reminder, the Cash App revenue presentation change does not impact gross profit. Second, non-Block renewals between Q2 2022 and Q1 2023, lowered growth by low to mid-single digits. These customers represented approximately 50% of our non-Block TPV and the effects of these renewals will be fully lapped in Q2 2024. Lastly, we lost full Visa incentives for two of our customers at the start of 2023, lowering growth by low to mid-single digits each quarter until we lap this impact in Q1 of '24. Our gross profit take rate was 13 bps consistent with last quarter. The gross profit take rate outside of Cash App increased 1 point from last quarter due to higher network incentives. As expected, the gross profit margin was 70%. Q4 adjusted operating expenses were $80 million, a decrease of 16% year-over-year due to realized savings from our restructuring in late May, as well as efficiency initiatives in our technology and professional service expenses. These savings were achieved without sacrificing innovation, compliance or platform resiliency. On a sequential basis, expenses grew 7% quarter-over-quarter, largely due to an increase in professional services, which tend to increase in Q4 due to the timing of audit fees as well as product and security assessments. Q4 adjusted operating expenses were over $3 million lower than we expected, mostly due to investment timing delays, particularly hiring as we just recently established an office location in Poland, which we intend to utilize for a significant portion of our headcount growth. Q4 adjusted EBITDA was positive $3 million, a margin of 3%. Interest income was $15 million, driven by elevated interest rates. The Q4 GAAP net loss was $40 million, including a $10 million noncash post-combination expense related to the Power acquisition. During Q2, we announced the buyback of $200 million. As of the Q4 quarter end, we purchased 31.3 million shares for an average price of $5.36 for $168 million. We ended the quarter with $1.25 billion of cash and short-term investments. The full year 2023 net revenue decrease of 10% and gross profit growth of 3% did not necessarily reflect the strength of our underlying business due to the change in the Cash App revenue presentation and heavy renewal activity. 2023 was a transformative year for Marqeta putting the company on a path to sustainable growth, profitability and innovation. TPV grew 34%, and our adjusted EBITDA was negative $2 million as we restructured our cost base and focused on efficiency while securing over 80% of our TPV in renewals over the past seven quarters. We were free cash flow positive for the year. Now let's transition to our expectations for 2024. Let me quickly provide full year 2024 expectations before diving into more details on the first and second halves. I will also call out any changes to the 2024 financial targets we shared at Investor Day a few months ago. Full year 2024 net revenue is expected to contract 20% to 24% as the change in Cash App revenue presentation weighs on growth in the first half. 2024 gross profit growth is expected to grow 6% to 9%, which equates to a gross profit margin in the high 60s. Adjusted operating expenses are expected to grow in the mid- to high single digits as we continue to operate with a strong investment discipline and focus on achieving economies of scale. Therefore, we expect full year 2024 adjusted EBITDA to be around breakeven or said differently, an adjusted EBITDA margin of around 0%. Because of the details I'll describe in a minute, we expect to be adjusted EBITDA positive in three out of the four quarters in 2024. This expectation is a little better than what we shared at our Investor Day in November as a result of efficiency initiatives. Before I get into the more granular detail, let me first start by providing important context for 2024. We have assumed the overall macroeconomic environment remains consistent with recent trends. We have yet to see meaningful changes in the spend patterns on our consumer and commercial cards in the past several months. Therefore, we assume the current trajectory persists. Our financial performance will be meaningfully different in the first and second half of 2024, primarily for two reasons. First, the lapping of the effects of the Cash App renewal will dissipate at the start of Q3. Second, the revitalization and strength of our sales bookings since Q4 of 2022 should lead to a fair amount of new business launching and ramping on our platform throughout the year. The contribution of these bookings to net revenue and gross profit will increase each quarter, further accentuating the difference in our first and second half growth rates. Adjusted expense growth will also be meaningfully different in the first and second halves of 2024 due to our restructuring executed at the end of May 2023. Our expense base was meaningfully different in the first five months of 2023 than it was in the last seven months. The difference was further exacerbated by the fact that we did not reinvest some of the savings in new initiatives and focus areas as quickly as we intended, as we referred to in my Q4 2023 comments. Therefore, our second half 2023 adjusted expenses are unusually low. Now let's turn to the first half of 2024. For Q1 2024, we expect net revenue to contract between 45% and 48%, including a 65 to 70 percentage point negative impact of the Cash App renewal, mostly due to the revenue presentation change, consistent with what we have seen in the last two quarters. We expect Q2 net revenue to contract in the same range. As expected, this is a few points lower than the second half of 2023 due to the unfavorable business mix and slower growth from a few of our customers without much contribution from new program launches at this point. Q1 gross profit is expected to contract between 8% and 10% with a gross profit margin in the high 60s. We expect gross profit to contract in the same range in Q2. However, the Q2 gross margin will be approximately 7 points lower than Q1 as our network incentive tiers reset in April with our two largest network partners. The first half gross profit contraction is now expected to be a little worse than what we shared at our November Investor Day due to unfavorable business mix and revised expectations for the timing of when some key customers will achieve certain price tiers based on their TPV trajectory. Q1 adjusted operating expenses are expected to shrink in the mid-teens, similar to Q4 '23, but with some ramp in hiring results from the delays I discussed earlier. In contrast, we expect Q2 adjusted operating expenses to grow in the mid-single digits. In Q2, we'll begin to lap our restructuring from last May, and we'll incur additional costs from our reinvestment in hiring as well as investments and platform resiliency to support our scaled customers. Therefore, Q1 adjusted operating -- sorry, therefore, Q1 adjusted EBITDA margin is expected to be in the zero to positive 2% range. This is better than what we shared at Investor Day due to our investment delays and increased efficiencies we realized in Q4 '23. We expect Q2 to be our only negative adjusted EBITDA quarter with a margin in the negative 79% range due to a combination of the resetting of our network incentives weighing on gross profit and additional investment needed to support our growth. In the second half of '24, our business performance metrics are expected to improve significantly after lapping almost all of the major renewal activity, particularly Cash App. We expect net revenue growth in the second half of 2024 to reaccelerate to 23% to 26%, primarily driven by three factors. First, lapping the Cash App revenue presentation change; second, realizing existing customers' growth as we lap all the elevated renewal activity, and third, benefiting from the ramping new programs as we progress through the year. Second half 2024 gross profit growth is also expected to be in the 23% to 26% range, consistent with net revenue. This second half gross profit growth is expected to be a little higher than what we shared with you at Investor Day due to positive business mix and expected shifts in a couple of existing program constructs where we currently incur excessive network fees. Second half 2024 adjusted operating expenses are expected to grow in the high teens as we continue to invest in growth initiatives and resiliency, combined with the fact that we grow over the unusually low expenses in 2023 as our post-restructuring reinvestment was delayed. Therefore, we expect second half 2024 adjusted EBITDA to be positive 1% to 3% margin, a little higher than what we shared at Investor Day due to higher gross profit. In conclusion, we are exiting 2023 with great business momentum and a solid foundation to deliver sustainable growth, profitability and innovation in 2024 and beyond. Our excitement and confidence is primarily driven by three factors. First, by renewing over 80% of our TPV in the last seven quarters, most of which are in contracts of at least 4 years, we have secured our attractive customer base and opened up potential cross-selling opportunities as we continue to expand our platform capabilities. This was short-term pain for long-term gain. Second, we are starting to get contributions from ramping new use cases such as BNPL anywhere cards and accelerated wage access. As we move through 2024, this will be combined with ramping new cohorts that result from our improved sales performance that delivered over 50% bookings growth in 2023. Third, we are getting early customer traction with our new credit capabilities, signing our first two customers to leverage our fully modern scaled issuer credit platform for innovators. Although this won't meaningfully contribute much to the 2024 P&L, credit will be a meaningful driver of future growth. Fourth, Marqeta's differentiated platform in terms of both breadth and depth of our capabilities gives us an outsized market opportunity as many fintechs continue to thrive, combined with the continued emergence of embedded finance use cases. Lastly, we have achieved a more efficient cost structure while maintaining compliance, security and innovation that will power profitable growth for years to come. Starting in the second half of 2024, our business and financial metrics are expected to reflect this momentum as we return to growth. We are excited to share our progress with you in the coming quarters. I'll now turn it back over to the operator for questions.