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SEC Form 4 research

AMEREN CORP insider transactions

Inspect AMEREN CORP's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001002910
Reporting owners
88
Officers and directors
26
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-142026-09-11Flores RafaelS248$105.53Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-11 and its public availability date is 2026-09-14. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001656999-26-000008 ↗SEC accession 0002093849-26-000008 ↗SEC accession 0002093849-26-000008 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 5 rows, 7 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-09-142026-09-11Flores RafaelS248$105.53Not reported
2026-08-212026-08-20Martin Ryan JS500$109.88Not reported
2026-08-212026-08-18Martin Ryan JS471$109.87Not reported
2026-08-182026-08-14Shaw Theresa AS325$108.93Not reported
2026-08-062026-08-03MOEHN MICHAEL LS6,500$108.96Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 26 displayed rows: Officers and directors in the directory

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BAXTER WARNER L000119009315
BIRK MARK C00012208544
Lindgren Mark C000164085217
MARK RICHARD J000119010014
MOEHN MICHAEL L000119010523
HARSHMAN RICHARD J0001200244245
LYONS MARTIN J000119009914
Nwamu Chonda J00017643986
Arora Ajay K00020937351
BIRDSONG JERRE E00011900941
Borkowski Maureen A00013137351
CISEL SCOTT A00012173501
Diya Fadi M00015982437
Flores Rafael00016569999
GALVIN WALTER J000118347619
Heger Mary P00016408631
Ivey Craig S000135839397
Martin Ryan J00020938493
NASLUND CHARLES D00011901091
NELSON GREGORY L00011901106
SERRI ANDREW M00012078423
Shaw Theresa A00018782416
Smith Patrick E00020947781
Steinke Bruce A00015661857
VOSS THOMAS R00011901171
Woodard Jackie D00013742713
BAXTER WARNER L ↗BIRK MARK C ↗Lindgren Mark C ↗MARK RICHARD J ↗MOEHN MICHAEL L ↗HARSHMAN RICHARD J ↗LYONS MARTIN J ↗Nwamu Chonda J ↗Arora Ajay K ↗BIRDSONG JERRE E ↗Borkowski Maureen A ↗CISEL SCOTT A ↗Diya Fadi M ↗Flores Rafael ↗GALVIN WALTER J ↗Heger Mary P ↗Ivey Craig S ↗Martin Ryan J ↗NASLUND CHARLES D ↗NELSON GREGORY L ↗SERRI ANDREW M ↗Shaw Theresa A ↗Smith Patrick E ↗Steinke Bruce A ↗VOSS THOMAS R ↗Woodard Jackie D ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.