Ameren (AEE) insider buying and selling
Every Table I transaction reported by directors and officers of S&P 500 companies on SEC Form 4 filings (2 business days to file): each row labeled with its official transaction code, nothing filtered out beforehand.
Open-market purchases (code P) are the rare signal, in green; sales (code S) are common and often pre-scheduled (10b5-1). Table II (derivatives) is not included: its prices are exercise prices, not market values. Guide: insider buying.
| Date | Ticker | Insider | Role | Shares | Price | Amount | % of stake | Type / filing |
|---|
Download these transactions as CSV No account, no sign-up. The data is public: it comes from SEC Form 4 filings.
Ameren Corporation (AEE) insider buying and selling: no purchases, 25 sales
72 Form 4 Table I transactions filed with the SEC by Ameren Corporation insiders between 2025-08-26 and 2026-09-14 (15-month history): 0 open-market purchases and 25 sales, plus 47 transactions under other Form 4 codes, broken down one by one below. The largest open-market trade is a sale of $3.0M by Lyons Martin J on 2026-03-03.
Ameren insider buying and selling over the last 12 months
Between Oct 21, 2025 and Oct 20, 2026, Ameren insiders filed 22 sales worth $8.6M on the open market, and no purchases.
The biggest seller was Lyons Martin J (Chairman, President & CEO): $3.0M in 1 sale, out of 11 different sellers.
The largest trade of the period was a sale of $3.0M on Mar 3, 2026, by Lyons Martin J (Chairman, President & CEO), under a 10b5-1 plan. Form 4 on sec.gov (0001190099-26-000004).
Of the 22 sales, 12 (55%, $6.9M) carry the 10b5-1 plan flag on the Form 4, meaning they were scheduled months ahead; the other 10 do not.
The last three months show 5 sales, against 3 in the three before. The latest sale from Sep 11, 2026.
Against its sector (Utilities, 31 companies with an insider page on this site), over the same dates the median is 5 sales and 0 purchases on the open market. Ameren has more sales than 29 of the other 30, ranks 6 of 31 by net dollars sold, and 11 of the 31 have at least one purchase.
The 20 most important trades
With no open-market purchases, the table starts with AEE's sales, largest first. The full history is in the tool above, already searched.
See all 72 AEE trades in the full history →
| Trade date | Filed | Insider | Role | Amount | Code | Filing |
|---|---|---|---|---|---|---|
| 2026-03-03 | 2026-03-03 | Lyons Martin J | Chairman, President & CEO | $3.0M | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF3 Shares sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. | SEC |
| 2026-05-01 | 2026-05-05 | Moehn Michael L | Group President, Utilities | $739k | S — Open-market sale (scheduled 10b5-1)2 Form 4 footnotesF2 Shares sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. F3 Amount includes 573 accrued dividend equivalents acquired during the first quarter of 2026 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2026-08-03 | 2026-08-05 | Moehn Michael L | Group President, Utilities | $708k | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF2 Amount includes 590 accrued dividend equivalents acquired during the second quarter of 2026 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2026-02-02 | 2026-02-04 | Moehn Michael L | Group President, Utilities | $673k | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF2 Amount includes 603 accrued dividend equivalents acquired during the fourth quarter of 2025 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2025-11-03 | 2025-11-04 | Moehn Michael L | Sr Executive VP & CFO | $659k | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF2 Amount includes 594 accrued dividend equivalents acquired during the third quarter of 2025 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2026-03-03 | 2026-03-03 | Schukar Shawn E | Officer | $556k | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF3 Shares sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. | SEC |
| 2026-02-17 | 2026-02-19 | Mizell Gwendolyn G | Officer | $393k | S — Open-market sale | SEC |
| 2025-09-12 | 2025-09-15 | Lindgren Mark C | Officer | $353k | S — Open-market saleForm 4 footnoteF2 Amount includes 48 accrued dividend equivalents acquired during the third quarter of 2025 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2026-02-17 | 2026-02-19 | Arora Ajay K | SVP of Subsidiary | $334k | S — Open-market sale Indirect holding, through: By family trust | SEC |
| 2025-11-14 | 2025-11-18 | Harshman Richard J | Director | $262k | S — Open-market saleForm 4 footnoteF1 Amount includes a total of 480 shares acquired during the first through third quarters of 2025 through reinvested dividends. | SEC |
| 2025-11-14 | 2025-11-18 | Smith Patrick E | SVP of Subsidiary | $252k | S — Open-market saleForm 4 footnoteF2 This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.78 to $104.82, inclusive. The reporting person undertakes to provide Ameren Corporation (Ameren), any security holder of Ameren, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range. | SEC |
| 2026-03-03 | 2026-03-03 | Lindgren Mark C | Officer | $232k | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF3 Shares sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. | SEC |
| 2026-02-17 | 2026-02-19 | Flores Rafael | Director | $178k | S — Open-market sale | SEC |
| 2026-05-12 | 2026-05-14 | Shaw Theresa A | SVP and CATO | $164k | S — Open-market sale (scheduled 10b5-1)Form 4 footnoteF2 Amount includes 46 accrued dividend equivalents acquired during the first quarter of 2026 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2025-09-03 | 2025-09-04 | Mizell Gwendolyn G | Officer | $149k | S — Open-market sale | SEC |
| 2026-03-04 | 2026-03-06 | Martin Ryan J | SVP Finance | $147k | S — Open-market sale | SEC |
| 2025-08-22 | 2025-08-26 | Mizell Gwendolyn G | Officer | $102k | S — Open-market saleForm 4 footnoteF2 Amount includes 11 shares acquired during the second quarter of 2025 through reinvested dividends, as well as 23 accrued dividend equivalents acquired during the second quarter of 2025 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2026-08-20 | 2026-08-20 | Martin Ryan J | SVP Finance | $55k | S — Open-market saleForm 4 footnoteF2 Amount includes 87 accrued dividend equivalents acquired during the first and second quarters of 2026 pursuant to a dividend reinvestment feature of restricted stock units granted under the issuer's 2022 Omnibus Incentive Compensation Plan. | SEC |
| 2026-08-18 | 2026-08-20 | Martin Ryan J | SVP Finance | $52k | S — Open-market sale | SEC |
| 2026-02-17 | 2026-02-19 | Shaw Theresa A | SVP and CATO | $36k | S — Open-market sale (scheduled 10b5-1) | SEC |
The period balance: money in, money out
In the Form 4 filings submitted between Aug 26, 2025 and Sep 14, 2026 there is not one open-market purchase of Ameren Corporation: 25 sales worth $9.2M and zero dollars bought.
Only codes P and S count, where an insider puts in or takes out their own money. A selling balance like Ameren Corporation's is the norm in the S&P 500, where much of the pay comes as stock. It is not a recommendation to buy or sell: it is what was filed.
Every transaction, code by code
| Code | What it means | Trades | Reported amount |
|---|---|---|---|
| A | Grant or award | 31 | $0 |
| S | Open-market sale | 25 | $9.2M |
| F | Tax withholding (shares surrendered for taxes) | 11 | $6.7M |
| G | Gift | 5 | $0 |
| Total | Everything filed in the period | 72 | $15.9M |
36 of the 72 rows carry no usable amount on the Form 4: they count as trades and add $0. The code labels come from the SEC index.
Who has traded
Over the 15 months of history, 25 distinct people or entities have filed Ameren Corporation transactions: none bought on the open market and 11 sold. Counted by CIK, the fixed number the SEC gives each filer, and not by name, which each filer types their own way.
Of the 11 who sold on the open market (25 sales in all), the three biggest sellers account for $6.4M of the $9.2M: 70% of the money in three people.
| Filer | Role | Transactions | Bought (count) | Sold (count) | Last filed |
|---|---|---|---|---|---|
| Lyons Martin J | Chairman, President & CEO | 3 | — | $3.0M (1) | 2026-03-03 |
| Moehn Michael L | Group President, Utilities | 6 | — | $2.8M (4) | 2026-08-05 |
| Mizell Gwendolyn G | Officer | 5 | — | $645k (3) | 2026-03-03 |
| Lindgren Mark C | Officer | 4 | — | $585k (2) | 2026-03-03 |
| Schukar Shawn E | Officer | 4 | — | $556k (1) | 2026-03-03 |
| Arora Ajay K | EVP of Subsidiary | 5 | — | $334k (1) | 2026-07-06 |
| Shaw Theresa A | SVP and CATO | 9 | — | $305k (5) | 2026-08-17 |
| Harshman Richard J | Director | 2 | — | $262k (1) | 2026-01-07 |
Shown here are the 8 who moved the most money, out of 25. The rest are in the full history, one link above. The name links to all their trades, in any company. "Transactions" counts any code; the money, open market only. Role: from their latest filing.
Month by month
By the month the trade was executed, not the month it was filed; months with no trades show zero. The busiest month was Nov 2025: 0 purchases and 5 sales, worth $1.2M. 7 of the 15 months have none.
| Month | Purchases | Amount | Sales | Amount |
|---|---|---|---|---|
| Aug 2025 | 0 | $0 | 1 | $102k |
| Sep 2025 | 0 | $0 | 2 | $502k |
| Oct 2025 | 0 | $0 | 0 | $0 |
| Nov 2025 | 0 | $0 | 5 | $1.2M |
| Dec 2025 | 0 | $0 | 0 | $0 |
| Jan 2026 | 0 | $0 | 0 | $0 |
| Feb 2026 | 0 | $0 | 5 | $1.6M |
| Mar 2026 | 0 | $0 | 4 | $3.9M |
| Apr 2026 | 0 | $0 | 0 | $0 |
| May 2026 | 0 | $0 | 3 | $938k |
| Jun 2026 | 0 | $0 | 0 | $0 |
| Jul 2026 | 0 | $0 | 0 | $0 |
| Aug 2026 | 0 | $0 | 4 | $850k |
| Sep 2026 | 0 | $0 | 1 | $26k |
| Oct 2026 | 0 | $0 | 0 | $0 |
The last month may be partial: a Form 4 is filed up to two business days later. The table does not say whether the pattern is good or bad; it says when it happened.
Ameren Corporation (AEE) analysis page →
Other Utilities companies with insider trades
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Which insiders are buying their own company stock →
How to read this data
9 of the 20 sales in the table are flagged as scheduled (10b5-1 plan): signed months ahead and executed automatically, so they say nothing about what the insider thinks today. Ameren has no open-market purchase (code P) in the history, the most common case in the S&P 500: insiders are already paid in stock. The latest filing is from Sep 14, 2026, and a Form 4 arrives up to two business days after the trade.
13 of the 20 rows in the table carry footnotes from the Form 4 itself, folded into the code column and copied verbatim; a row with no footnote means the filing has none.
Guide: Insider buying · all guides
What is behind these trades
The concepts on this page, explained from scratch in the Academy. Free, no account.
- What the efficiency hypothesis says and what it does NOT sayIf an insider's purchase is public and anyone can read it, is there any information left in it? That is the exact question that brings people here.
- Who really moves the market: the types of investorWho sits on the other side of each order, and where a company's own insiders fit among them.
- Supply, demand and price: why it rises and falls constantlyHow a piece of news ends up inside the price, and why the reaction to a filed sale is rarely the one you would expect.
Source: SEC EDGAR Form 4. This is a list of public facts, not financial advice or a recommendation to buy or sell.