AAmeren Illinois Co logo

Company dossier

Ameren Illinois Co

Ticker AILIHCIK 0000018654SIC 4931Electric & Other Services Combined

Exchange

OTC

Entity type

operating

Fiscal year end

Dec 31

Headquarters

IL

Company overview

Ameren Illinois Co

Ameren Illinois Co supplies regulated electric and gas services to residential, commercial, and industrial customers across Illinois, positioning itself within the traditional SIC utility sector as a cornerstone of Midwestern energy delivery with a focus on grid reliability, demand management, and storm response. The company’s core offerings include transmission and distribution infrastructure, energy efficiency programs, and customer engagement tools tailored to communities that rely on consistent power for homes, schools, hospitals, and factories, while balancing investments in clean energy integration and modernization. Operating under the expectations of state regulators and the Federal Energy Regulatory Commission, Ameren Illinois manages material risks such as weather extremes, aging equipment, supply chain fluctuations, and evolving environmental mandates, and its financial condition is influenced by the pace of rate cases and capital approval processes. CIK 18654 and ticker AILIH signal the issuer’s public governance, even as the latest filing details remain unavailable, so view live SEC filings on Earnings Feed.

Source: Earnings Feed research · last updated 11/24/2025

Last trade

$67.99

+$0.74 (+1.10%)

Ticker

AILIH

Prev close

$67.25

Range (30d)

$66.75 – $67.99

Updated

Nov 21, 9:30 AM ET
$66.50$67.00$67.50$68.00Oct 22Oct 31Nov 12Nov 21

Recent filings

Latest submissions
9 items

Monitoring

Insider owner filings
No
Insider issuer filings
Yes
Tickers on record
10

Addresses

  • business

    10 RICHARD MARK WAY

    COLLINSVILLE, IL, 62234

  • mailing

    10 RICHARD MARK WAY

    COLLINSVILLE, IL, 62234

Former names

  • CENTRAL ILLINOIS PUBLIC SERVICE CO

    1994-02-282010-09-13