AMEREN CORP: insider trades · United States · SEC (Form 4)

About AMEREN CORP

Ameren Corp. (ticker: AEE) is a US utility holding company listed on the NYSE in the United States. For international investors, it is best viewed as a regulated infrastructure and essential-services platform with a defensive earnings profile. Headquartered in St. Louis, Missouri, Ameren operates through a set of core subsidiaries led by Ameren Missouri, Ameren Illinois, and Ameren Transmission Company of Illinois (ATXI). The company’s business model is centered on regulated electricity and natural gas delivery, with additional generation and transmission activities in Missouri. ([ameren.com](https://www.ameren.com/company?utm_source=openai)) Ameren was formed through the combination of several Illinois utilities with Union Electric Company of St. Louis. The company’s name itself comes from the words “American” and “Energy,” which fits its long-standing identity as a regional energy operator rather than a diversified conglomerate. That history matters because Ameren’s investment case is built on regulated assets, disciplined capital deployment, and close relationships with state and federal regulators, rather than on rapid market-share expansion. ([ameren.com](https://www.ameren.com/company?utm_source=openai)) Operationally, Ameren Illinois is primarily an energy delivery company, serving electric and natural gas customers in Illinois. Ameren Missouri is more integrated, with electric generation, transmission, distribution, and regulated natural gas distribution. ATXI focuses on regional transmission development. Across its footprint, Ameren serves about 2.5 million electric customers and more than 900,000 natural gas customers over roughly 64,000 square miles in Illinois and Missouri. That footprint gives the group a meaningful regional scale, particularly in Missouri where Ameren Missouri is the largest electric provider, and in Illinois where Ameren Illinois is a major gas distributor. ([ameren.com](https://www.ameren.com/company?utm_source=openai)) From a competitive standpoint, Ameren’s strengths are its regulated service territory, large installed infrastructure base, and relatively stable customer demand. These features usually support visibility of cash flows and a lower cyclicality than most industrial or commodity-exposed companies. At the same time, the business is highly capital intensive and dependent on rate cases, grid investments, and regulatory approvals, which means returns are closely tied to the timing and outcome of utility regulation. The company has been emphasizing reliability, resilience, and modernization of the grid, alongside a gradual build-out of renewable generation and transmission assets. ([ameren.com](https://www.ameren.com/company?utm_source=openai)) Recent developments underline that strategy. In 2026, Ameren Illinois filed its second multi-year integrated grid plan for the 2028-2031 period, showing continued focus on system upgrades and regulatory planning. Ameren Missouri also secured approval for the Grand Tower Crossing transmission project, a new 138-kV line aimed at improving reliability and transmission capacity. In parallel, the company has highlighted Missouri economic-development initiatives and infrastructure support for large-load customers such as data centers and advanced manufacturing. Overall, Ameren remains a classic regulated utility story: geographically concentrated, infrastructure-heavy, and tied to long-duration capital investment in the United States. ([ameren.com](https://www.ameren.com/illinois/company/grid-plan?utm_source=openai))