Dear Shareholders, Over the course of 2025, AdvanSix successfullynavigated the extended chemical industry downturn,continuing to demonstrate our ability to performthrough a multitude of environments while positioningthe enterprise to win long-term. Our integratedbusiness model, durable competitive advantage,healthy balance sheet and continued risk-adjustedinvestment decisions underpin our proven track recordof through-cycle performance to deliver results for ourshareholders. and lower global operating rates, which we believeshould lead to more favorable supply and demandconditions in this sector over time. A key component of our commercial strategy is tocontinuously evolve and optimize production outputand sales volume mix in line with current and futurecustomer demand. TheSustainable U.S. Sulfate toAccelerate Increased Nutrition (SUSTAIN)programprogressed further in 2025, expanding our granularammonium sulfate production to benefit Americanfarmers, strengthen local supply chains and meetgrowing demand without a net increase in energyconsumption or emissions. In addition, throughour independently certified post-consumer andpost-industrial recycled (PCR/PIR) nylon offerings,we have the differentiated capability needed tocapture value across our end markets. While this year was characterized by a continuedand extended industry downturn for Nylon Solutions,robust supply and demand fundamentals amidan increasing input cost environment for PlantNutrients and lower acetone net pricing for ChemicalIntermediates, the collective AdvanSix team focusedon driving the many elements that were within ourcontrol. Through our disciplined approach, AdvanSixexecuted well in 2025 with a focus on optimizingcommercial and operational performance to deliverfull year adjusted EBITDA of $157 million, AdjustedEarnings Per Share of $2.28 and Free Cash Flow of $6million. •Positioning for the Long-Term:We continue tofocus on the right steps to best position AdvanSixfor long-term value creation for our stakeholders.We were one of the first industrial companiesto be recognized for our use of carbon capturetechnologies in our manufacturing process throughan approved life cycle assessment enabling 45Qtax credits, representing a meaningful medium-tolong-term value driver with a total potential taxcredit opportunity of over $100M through 2029 aswe continue to pursue these credits. With disciplinedcapital allocation, a healthy balance sheet anda keen focus on productivity and free cash flowgeneration, we believe we have the flexibility andresilience to navigate current market conditionsand execute against organic and inorganicopportunities to build long-term shareholder value. At AdvanSix, it all starts withLiving Safetyevery day.That is our license to operate, and how we ground ourteam of more than 1,400 strong to unite us in purposeevery day. Correspondingly, our strategy also startswith safety and is grounded in three fundamentalpillars. •Operational Excellence:Put simply, safe, stableand sustainable manufacturing is our foundationfor success. In 2025, we demonstrated the financialimpact of strong operational performance throughour execution of our planned turnarounds at the lowend of our target spend, and by delivering recordannual production across both of our ammonia andsulfuric acid operations. In October 2026, AdvanSix will mark ten years asa standalone, publicly traded company – and inmany ways we are just getting started. Our strategicinitiatives, unique combination of assets and businessmodel are core to our durable competitive advantageand long-term positioning. We appreciate your trust ininvesting in our strategy and path forward and thankyou for your continued interest in AdvanSix. A key component of our operational excellencestrategy is to reduce our costs responsibly, which isfoundational to margin resilience. In 2025, AdvanSixembarked on a multi-year non-manpower fixed costsavings program targeting approximately $30 millionof run-rate savings. Stay Safe, •Disciplined Portfolio & Commercial Management: While the end market environment entering 2026is mixed overall, we see continued strength inPlant Nutrients and acetone margins that remainnear cycle averages. While nylon has plateauedin its trough, there have been several industryannouncements pointing to capacity rationalization ERIN N. KANE President andChief Executive Officer Business Highlights F Y 25 SA L E S$1.5B The Company delivered full year 2025 Adjusted EBITDA of$157 million, Adjusted Earnings Per Share of $2.28 and positiveFree Cash Flow of $6 million. While the macro environment was challenging, there werea number of notable highlights to recognize: FY25 ADJUSTEDEBITDA$157M •We successfully executed our planned turnarounds at the lowend of our target spend range. •Delivered record annual production across both of our ammoniaand sulfuric acid unit operations. •Invested $116 million in CapEx, funding key growth and enterpriseinitiatives includi