Thank you, Simon, and good afternoon, everyone. Our financial results in Q3 better reflect the growth trajectory of the business, now that we have lapped the Cash App renewal. Strong TPV growth continues to be broad-based across several use cases and geographies, fueling our gross profit growth. Nevertheless, TPV and gross profit growth were a little lower than we expected due to a smaller contribution from the launching of new programs, which I will cover in detail in a few minutes. Our path to profitability, however, remains on track as adjusted EBITDA was $2 million to $3 million better than expected due to continued execution of efficiency and optimization initiatives. Q3 TPV was $74 billion, a year-over-year increase of 30%. Non-Block TPV grew more than 15 points faster than Block TPV growth due to strength across a large number of customers and use cases. Our Top 10 Non-Block customers grew over 30% and our remaining Non-Block customers grew over 50% year-over-year. Financial services, lending, including Buy Now Pay Later, and expense management all grew at roughly the same rate for the third quarter in a row, slightly faster than the overall company. Financial services continue to deliver strong growth despite being by far our largest vertical. Block continues to flourish and our newer neobanking and accelerated wage access customers are expanding rapidly, growing well over 100%, and are now contributing more than 10% of total company TPV. Lending, including Buy Now Pay Later, continues to be aided by the adoption of our BNPL customers' PayAnywhere card solutions as well as customers utilizing our platform in support of SMB lending solutions. Expense management growth has been very steady each of the last three quarters with several of our top customers maintaining robust growth fueled by new users. The growth of on-demand delivery, our most mature use-case, slowed into the single digits this quarter. Q3 net revenue was $128 million, growing 18% year-over-year. Net revenue growth is almost 13 points lower than TPV growth, a larger than typical gap, primarily for two reasons. First, strong TPV growth in recent quarters among many of our Powered By Marqeta customers has shifted the mix of our business. The powered by revenue take rate is much lower than managed by as a result of there being minimal cost of revenue, which contributed a mid-single-digit impact when comparing revenue and TPV growth. This impact is less significant when comparing gross profit take rates for the powered by and managed by business. Second, the renegotiated platform partner agreement that went into effect in Q1 2024 drove a low to mid-single-digit headwind on a year-over-year basis. It's important to note that this change only impacts revenue, not gross profit as a result of the new Cash App revenue presentation and will lap in Q1 2025. Block net revenue concentration was 47% in Q3, consistent with last quarter. Non-Block revenue growth was over 10 parts higher than Block net revenue growth. Our net revenue take rate of 17 basis points was slightly lower than last quarter, primarily driven by a business mix from the increasing TPV contribution of Powered by and a few of our largest managed by customers. Q3 gross profit was $90 million, resulting in a 24% year-over-year growth and a 70% gross profit margin. Gross profit growth was approximately 2 points lower than expected as a result of lower contribution from new programs in the quarter. There are two reasons for this. First, 15 programs we expected to launch in the quarter were delayed by an average of 70 days. We were less efficient in working with our bank partners to launch new programs, which we attribute to the increased regulatory scrutiny over the last few quarters on the banking industry, particularly the smaller banks supporting fintech and embedded finance. Although we anticipated challenges as a result of the increased scrutiny, we significantly underestimated the impact of constrained resources and evolving processes. Now we have a backlog of programs to launch. Unfortunately, as a backlog builds and the ramp of programs is shifted out in time, there are bigger implications for Q4 and 2025, which I will cover in more detail in a few minutes. Second, our new programs that have already launched in aggregate are not performing as expected. Because we serve many innovators and disruptors, Marqeta has always viewed launch cohorts as a diversified portfolio of programs with customers achieving varying levels of success. Given the small sample size of new programs in 2024 as a result of the delays, the portfolio lacks diversification and therefore it may be a little early to evaluate. The cause of gross profit underperformance can happen for several reasons, including changes to the customers' level of investment or resource allocation, the value proposition needing refinement, or higher cost of revenue than projected. Our gross profit take rate was 12 basis points, 1 bps higher than last quarter, driven by higher incentives in Q3. This is the result of the annual reset of incentives in Q2 based on the contract years. Q3 adjusted operating expenses were lower than expected at $81 million, an increase of 9% versus last year. To fully benefit from our scale, we are focused in our hiring, continue to utilize multiple geographic locations to find the best talent, and are executing our efficiency and cost optimization initiative as well. All of these scale benefits help deliver higher than expected Q3 adjusted EBITDA of $9 million, resulting in a margin of 7%. Interest income was $14 million, Q3 GAAP net loss was $29 million. In Q3, we repurchased over 9 million shares at an average price of $5.15 for $49 million. We ended the quarter with $1.1 billion of cash and short-term investments. Now let me walk through our latest outlook for Q4. We expect Q4 net revenue growth to be between 10% and 12% and Q4 gross profit growth to be between 13% and 15%, a 6 and 9-point reduction respectively, compared to what we shared in early August. The change in our expectations is primarily driven by two factors, both of which stem to some degree from the heightened regulatory environment from our bank partners. First, we now expect significantly fewer new programs will launch and ramp up in the second half of the year, lowering gross profit growth by approximately 6 points. We were not quick enough with solutions and new processes for our bank partners and they are more focused on maintaining current programs in the heightened regulatory environment than launching new programs. In some cases, this environment also delays our customers' launch plans. Now that we have a backlog of programs to launch, it will take time to work through it. Delays of a few months pushes launches into Q4 and the first half of 2025. Because of the ramp trajectory of TPV in the first year of a program, a few months' delay meaningfully impacts Q4. The impact is larger on gross profit than revenue since newer programs with subscale volume tend to have high gross margins until our customers work through the initial volume tiers in our contracts. Why does this change in assumptions seem so sudden? We have been very aware of the scrutiny and working through it with our bank partners, investing significantly more in our compliance efforts since the start of this year to raise our program management standards ahead of the rising tide. However, in the past two to three months, it has become clear we greatly underestimated the magnitude and time horizon for all parties to adapt to the new standards. We are actively executing the solution for this challenge, working closely with existing bank partners to optimize our processes to improve the efficiency of program approval and onboarding. In addition, we plan to onboard at least two additional bank partners to increase our bank supply to meet our growing demand. The second factor is a few highly sophisticated long-term fintech customers are moving quickly to take ownership of more of the program components in this heightened environment, lowering gross profit growth by 2 to 3 points. We have two customers quickly shifting their resources to take on more program management responsibilities, one customer bringing more risk services in-house and three customers connecting their platforms directly to their end-users to reduce their reliance on card usage. All of these actions reduce our volume or our take rate. We do not believe these types of customer actions will become broad-based because very few want to prioritize this type of work or have the scale and sophistication to execute in a way that is accretive to their business. Outside of these two factors, the business is mostly on the trajectory we expected several months ago. Based on our Q4 outlook, we expect full-year 2024 net revenue growth to be approximately negative 26% and full-year 2024 gross profit growth to be approximately 6%. Despite some setbacks to gross profit growth, we continue to execute cost optimization and efficiency initiatives to drive higher adjusted EBITDA, as shown in the Q3 outperformance. We now expect our Q4 adjusted operating expense growth to be in the high single digits with sufficient investment in resources, specific capabilities, and platform resiliency to best serve our customers and drive future growth. Therefore, we expect our Q4 adjusted EBITDA margin to be 5% to 7%, only 1 point lower than the expectations shared last quarter as a result of better operating discipline. Based on this Q4 outlook, we expect a full-year 2024 adjusted EBITDA margin of approximately 5%. While it is too early to discuss our 2025 expectations in detail, at this point, we believe Q4 2024 is a good indicator for 2025. Gross profit growth in 2025 could be similar to Q4 2024 as we solve for new program launch delays, pushing the ramp-up programs to later in 2025. Also similar to Q4, our expectations for 2025 adjusted EBITDA are not changing from what we shared at our 2023 Investor Day. Being ahead of schedule on our expense optimization work should enable us to deliver adjusted EBITDA of approximately $50 million in 2025 and remain on track to exit 2026 GAAP profitable. We believe these challenges with new programs are a short-term issue impacting the next several quarters as a result of shifting out the new program ramp curve, rather than a structural change in our business that impacts the growth trajectory beyond 2025. To wrap up, we had a strong quarter delivering robust gross profit growth combined with an improving adjusted EBITDA trajectory. We are beginning to realize the benefits of our scale, both in generating profitable growth, but also in the opportunities we are discussing with embedded finance prospects looking for a highly capable multinational partner to support several use cases. Although our gross profit growth in the coming quarters will be lower than our previous expectations, we are still a market-leading platform generating mid-teens growth with a rapidly rising adjusted EBITDA. Our underlying business remains strong and our differentiation in the market remains clear. The delays in launching new programs is a small setback on a long prosperous journey of modernization of issuer processing that Marqeta is well-positioned to lead. I will now turn it over to the operator for Q&A.