Thanks, Jack, and thank you all for joining. The organizational changes we're sharing today represent a deliberate choice about Block's next phase of growth. The decision impacts many employees who played an important role in building Block, and we're deeply grateful for their contributions. As Jack mentioned, we're making this change after delivering a strong year across the business. In the fourth quarter, we outperformed our guidance across gross profit, adjusted operating income and adjusted EPS, translating product velocity into strong financial performance. Block generated $2.87 billion in gross profit, representing 24% year-over-year growth. And we grew adjusted operating income 46% year-over-year to $588 million, delivering 3 points of margin expansion even as we invested in initiatives with strong ROIs that we expect to drive future growth. On a per share basis, we grew adjusted diluted EPS 38% year-over-year. We repurchased $790 million of shares in the fourth quarter, bringing our total for 2025 to $2.3 billion. We exceeded Rule of 40 in Q4, and we believe we're on track to sustain it on an annual basis moving forward. Stepping back, 2025 was a pivotal year for Block. Gross profit growth more than doubled from the first quarter to the fourth quarter, leading to $10.36 billion in gross profit for the full year and growth of 17% year-over-year. Even with additional investment in go-to-market, we grew adjusted operating income 30% year-over-year in 2025, delivering 2 points of margin expansion. Cash App monthly actives returned to growth in the second half of 2025, ending the year at $59 million, and we executed on our engagement strategies with primary banking actives growing 22% year-over-year to 9.3 million monthly actives in December. We grew consumer lending origination volume by 50% year-over-year in 2025, while sustaining strong margins and healthy risk loss performance. We accelerated Square GPV growth from 8.6% in 2024 to 10% in 2025 and delivered our strongest year ever for new volume added or NVA, as we expanded our distribution channels. We continue to lean into our differentiated vertical integration and hardware design expertise with the launch of 2 new devices, Square Handheld and our second-generation Square Register to better serve a wider range of seller use cases. We began shipping Proto mining rigs with Proto gross profit scaling in the fourth quarter. Reviewing further some Q4 specifics. Cash App gross profit grew 33% year-over-year to $1.83 billion, accelerating relative to Q3. Throughout 2025, we focused on reigniting Cash App's network growth, and that work has paid off. In Q4, we grew monthly actives to 59 billion. Our focus on deepening engagement is also working with primary banking actives attach rate growing meaningfully in Q4. These customers have generated nearly 10x the gross profit of peer-to-peer only actives and we believe they create a foundation for long-term inflows per active growth. Cash App Commerce enablement volume grew 17% year-over-year to $54.7 billion in Q4, driven by strength in Cash App Card, where we saw the strongest quarter for new Cash App Card actives in over a year and saw Cash App Green drive increased retention and Cash App Card volume. Commerce monetization rate increased 4 basis points year-over-year as attach rates for Afterpay Post-Purchase continued to increase. We also grew consumer lending origination volume 69% year-over-year in the fourth quarter, with consumer lending variable profit growth consistent with originations growth. Within consumer lending origination volume, Borrow delivered an exceptional fourth quarter with origination volume growing more than 3x year-over-year. We leaned into Borrow offers for Cash App Green actives as one element of our new status program. Many customers deeply value access to liquidity. And beyond strong stand-alone unit economics, we've seen Borrow drive deeper engagement across other parts of Cash App. Our lending strategy is focused on maximizing variable profit, scaling responsibly while maintaining disciplined risk management. That approach was on display in Q4 and early 2026. Q4 was the strongest quarter for first-time Borrow actives ever, which drove higher portfolio losses in December and January based on the mix shift to new cohorts, which have higher losses by design. As of mid-February, all 2026 cohorts are trending below our risk loss targets, demonstrating our ability to quickly calibrate risk and adjust exposure for new cohorts based on the strength of our underwriting team, product design and our proprietary data and credit infrastructure. Turning to Square, where our distribution motion has continued to gain traction. 2025 was our strongest year ever for NVA growth of 17% -- with growth of 17%. That momentum continued into the fourth quarter with 29% year-over-year NVA growth. We saw progress across both marketing-led self-onboarding and sales channels, with sales-led NVA growing 62% year-over-year in Q4. In addition, we now partner with over 100 independent sales organizations, complementing our direct sales motion and extending our reach to more new sellers. GPV grew 10.3% in Q4, and we've seen growth reaccelerate so far in Q1, with growth quarter-to-date as of February 24 of over 12% year-over-year. Square gross profit grew 7.5% year-over-year in Q4, driven by growth in financial solutions. Hardware costs and higher processing costs were each a 2 percentage point headwind to Square gross profit growth in Q4, consistent with the expectations shared at our Investor Day. Looking ahead, we expect our new organizational design to increase velocity. We have seen significant improvement in AI tooling capabilities. We've seen engineering work that would have taken weeks to complete be done by a small team in a fraction of the time with agentic coding tools. These are reflected in our developer velocity metrics, where we've seen a greater than 40% increase in production code shipped per engineer since September. We've been prioritizing automation in how we build internally for the past couple of years as we've built bespoke tools and increased AI adoption. Some of our automation work streams are nearly fully rolled out. Others are earlier in their maturity, and we expect to continue to develop automation improvements in parallel with the advancements of the underlying technology. The outcomes we have seen are encouraging, and the long-term impact will depend on thoughtful implementation at scale. We are taking this decisive action from a position of strength. Gross profit growth accelerated throughout 2025, and we expect to sustain strong growth in 2026, with execution across a portfolio of ramping or new initiatives in Square and Cash App. In Cash App, we expect to compound our gains in our banking and commerce ecosystems, scale Cash App Green further and expand MoneyBot to our full customer base in the coming weeks and months. We launched Afterpay pre-purchase in February with strong early indications of demand and expect to scale it throughout the year. We also recently launched Pay-in-Four, buy now, pay later functionality for peer-to-peer transactions, which is a first for the industry. Our focus is to ramp these products along with Borrow while maintaining healthy loss rates. In Square, we expect to ramp go-to-market motions further across self-onboarding, sales and partnerships. We're focused on excellence in our food and beverage products and accelerating product velocity across other verticals to continue to drive net volume retention higher. We recently launched Square AI to all markets and are excited to deliver more proactive intelligence capabilities to our sellers as we build towards ManagerBot. We continue to be focused on connecting our ecosystems and believe we're finding product market fit with neighborhoods. Our focus now is on scaling. We're moving from an inbound motion to an auto enrollment motion for sellers, and we recently added in-store redemption capabilities to increase functionality for consumers and widen the addressable market to more sellers. Our guidance reflects this product velocity momentum. For the full year, we expect year-over-year gross profit growth of 18% to $12.2 billion, an increase relative to our Investor Day guidance and an acceleration relative to what we delivered in 2025. For Q1, we expect year-over-year gross profit growth of 22% to $2.8 billion. In addition to the growth momentum we're seeing, our guidance also reflects a smaller cost structure going forward. We believe the actions we're taking today will enable us to deliver faster product innovation for customers in the future while also enabling us to invest meaningfully in our business. With this change in cost structure, combined with the investments we plan to make, we are increasing our guidance for adjusted operating income in 2026 to $3.2 billion, reflecting year-over-year growth of 54% and 6 points of margin expansion relative to 2025. We are increasing our expectation for adjusted diluted EPS in 2026 to $3.66, also reflecting year-over-year growth of 54%. For Q1, we expect adjusted operating income of $600 million and adjusted diluted EPS of $0.67, reflecting year-over-year growth of 29% and 20%, respectively. Before wrapping up, a few additional considerations related to our guidance. Our Q1 operating income guidance includes a modest benefit from today's announcement, but we expect the organizational changes we announced today to begin to more meaningfully impact adjusted operating income in the second quarter with the full impact of our new cost structure more meaningfully improving profitability in the second half of the year. Given these timing dynamics and the pacing of investments in both risk loss and sales and marketing, we expect adjusted operating income margins to expand each quarter throughout the year from our Q1 starting point of 21%. We expect these margins to expand at a faster rate in Q3 and Q4 relative to Q2, and we expect to deliver just under 60% of our 2026 adjusted operating income guidance in the second half of the year. Within OpEx, we expect higher risk loss growth in the first half of the year based on our strong Borrow growth rate expectations in Q1 and Q2. In Square, we continue to expect gross profit growth to be roughly in line with GPV growth later in the second half of the year. In the first half, we anticipate a continued spread between gross profit and GPV growth with some potential variability driven by hardware costs and the pace at which we move upmarket. We view Square gross profit growth, excluding hardware costs as a clear measure of core profitability as we view hardware to be a customer acquisition investment to win larger, more retentive sellers. We expect increasing software attach rates to be a key driver of gross profit growth acceleration, and we expect to continue to evolve our pricing and packaging to ensure appropriate price to value while delivering attractive total cost of ownership for sellers. We have strong conviction in Cash App strategies to grow its network and deepen engagement, which have helped drive 2 quarters of sequential actives growth across monthly actives and primary banking actives. While monthly actives may fluctuate from time to time, we continue to expect low single-digit actives growth in 2026 and over the long term. We expect approximately $60 million in net interest expense in Q1 and $200 million for the full year, up modestly from the expectations we shared on our third quarter earnings call as we deployed more capital into buybacks and Borrow growth in the fourth quarter. And finally, similar to last quarter, we expect a mid-20% non-GAAP effective tax rate in 2026. And with that, I'd like to open up the call to Q&A.