SEC ownership of AMEREN CORP

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001002910.

Comparable stake leader

BlackRock, Inc.

Disclosed value leader

BlackRock, Inc.

Comparable rows

50/50

Latest evidence

01 Jun 2026

Top shareholders Insider holders Latest transactions
Public ticker
AEE on NYSE
Parsed ownership sources
13F, 13D/G, and 3/4/5
Largest SEC-reported holder
BlackRock, Inc.
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 2 signals
Latest 13D/G holder
BlackRock, Inc.
Latest parsed ownership date
01 Jun 2026
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001002910
Issuer location
St Louis, MO

Ownership snapshot

Top shareholders of AMEREN CORP (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
01 Jun 2026
13F 13D/G 3/4/5 Lead comparable stake: 8.1% 13D/G row: BlackRock, Inc. Showing 1-8 of 50 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 8.1%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership Top 5
BlackRock, Inc. 8.1%
PRICE T ROWE ASSOCIATES INC /MD/ 8.1%
VANGUARD CAPITAL MANAGEMENT LLC 7.5%
VANGUARD PORTFOLIO MANAGEMENT LLC 5.7%
STATE STREET CORP 5.2%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
BlackRock, Inc.
13F 13D/G
Company
13F 13D/G
8.1%
from 13D/G
$2,615,805,248
23,797,354 shares
 — 31 Mar 2026
PRICE T ROWE ASSOCIATES INC /MD/
13F 13D/G
Company · T. Rowe Price Associates, Inc.
13F 13D/G
8.1%
from 13D/G
$2,348,071,000
21,361,624 shares
 — 31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC
13D/G 13F
Vanguard Capital Management · Company
13D/G 13F
7.5%
$2,289,496,640
20,828,754 shares
 $0 31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
13D/G 13F
Vanguard Portfolio Management · Company
13D/G 13F
5.7%
$1,744,514,269
15,870,763 shares
 $0 31 Mar 2026
STATE STREET CORP
13F 13D/G
Company · STATE STREET CORPORATION
13F 13D/G
5.2%
from 13D/G
$1,641,037,889
14,929,384 shares
 — 31 Mar 2026
T. Rowe Price Investment Management, Inc.
13D/G 13F
Company
13D/G 13F
2.7%
$848,783,719
7,520,678 shares
 -$772,188,797 31 Mar 2026
Martin J. Lyons
3/4/5
Chairman, President & CEO, Director
3/4/5
0.1%
$31,838,873
284,797 shares
 -$2,999,325 27 Feb 2026
Michael L. Moehn
3/4/5
Group President, Utilities
3/4/5
0.08%
$23,941,158
210,866 shares
 -$2,737,865 01 May 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$9,033,132.

Buys
$0
Insiders: 0
Sells
$9,033,132
Insiders: 11
Net
-$9,033,132
Shares: -83,319
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 83,319
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 8,325 $0 $938,071 -$938,071
3-6 0 50,139 $0 $5,550,866 -$5,550,866
6-9 0 15,855 $0 $1,626,645 -$1,626,645
9-12 0 9,000 $0 $917,550 -$917,550

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 37 reporting-owner rows connected to AMEREN CORP. Open a relationship link for the CIK-to-CIK filing trail.

Rows
37
Largest Forms 3/4/5 holder
Martin J. Lyons
Net 12M change
-$9,033,131
Latest report
01 Jun 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Martin J. Lyons Chairman, President & CEO, Director $31,838,873 -$2,999,325 -8.6% Mixed 27 Feb 2026
Michael L. Moehn Group President, Utilities $23,941,158 -$2,737,865 -10% Mixed 01 May 2026
Warner L. Baxter Executive Chairman, Director $17,968,598 Mixed 28 Feb 2023
Richard J. Mark Chmn & President of Subsidiary $12,287,491 Mixed 31 Mar 2022
Mark C. Birk Chmn & President of Subsidiary $11,161,038 Mixed 28 Feb 2025
Fadi M. Diya SVP & CNO of Subsidiary $7,059,943 Mixed 28 Feb 2025
Shawn E. Schukar Chmn & President of Subsidiary $6,689,391 -$556,404 -7.7% Mixed 27 Feb 2026
Mary P. Heger SVP of Subsidiary $6,218,290 Mixed 28 Feb 2022
James C. Johnson Director $5,547,061 Mixed 03 Jan 2025
Ellen M. Fitzsimmons Director $5,295,176 Mixed 05 Jan 2026
Mark C. Lindgren EVP & Chief HR Officer of Sub $5,214,214 -$584,959 -10% Mixed 27 Feb 2026
Ajay K. Arora EVP of Subsidiary $4,958,270 -$334,320 -6.3% Median 01 Jun 2026
Chonda J. Nwamu Executive Vice President $4,431,592 Mixed 28 Feb 2025
Steven H. Lipstein Director $3,780,899 Mixed 05 Jan 2026
Leonard P. Singh Evp & Cfo $3,722,808 Mixed 27 Feb 2026
Theresa A. Shaw SVP and CATO $3,659,317 -$269,891 -6.9% Mixed 12 May 2026
Ryan J. Martin SVP Finance $3,189,575 -$147,303 -4.4% Mixed 04 Mar 2026
Bhavani Amirthalingam EVP & CCTO of Subsidiary $2,838,132 Mixed 29 Feb 2024
Catherine S. Brune Director $2,816,709 Mixed 05 Mar 2026
Patrick E. Smith Chairman & President of Sub $2,677,994 -$251,939 -8.6% Mixed 27 Feb 2026

Recent insider transactions for AMEREN CORP

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Ajay K. Arora AEE Common Stock, $.01 Par Value Award 43.8% 6,797 22,326 01 Jun 2026 Direct
Aaron P. Melda AEE Common Stock, $.01 Par Value Award 3,705 3,705 01 Jun 2026 Direct
Theresa A. Shaw AEE Common Stock, $.01 Par Value Sale -0.99% $35,451 $109.08 -325 32,618 14 May 2026 Direct
Theresa A. Shaw AEE Common Stock, $.01 Par Value Sale -4.36% $164,025 $109.35 -1,500 32,943 12 May 2026 Direct
Michael L. Moehn AEE Common Stock, $.01 Par Value Sale -3.06% $738,595 $113.63 -6,500 205,598 01 May 2026 Direct
Catherine S. Brune AEE Common Stock, $.01 Par Value Gift -1.66% -450 26,628 05 Mar 2026 Direct
Ryan J. Martin AEE Common Stock, $.01 Par Value Sale -4.68% $147,303 $113.31 -1,300 26,479 04 Mar 2026 Direct
Martin J. Lyons Jr. AEE Common Stock, $.01 Par Value Sale -8.66% $2,999,325 $111.84 -26,818 282,681 03 Mar 2026 Direct
Shawn E. Schukar AEE Common Stock, $.01 Par Value Sale -8.05% $556,404 $111.84 -4,975 56,830 03 Mar 2026 Direct
Mark C. Lindgren AEE Common Stock, $.01 Par Value Sale -4.41% $231,844 $111.84 -2,073 44,983 03 Mar 2026 Direct
Timothy S. Rausch AEE Common Stock, $.01 Par Value Award 1,251 1,251 01 Mar 2026 Direct
Martin J. Lyons Jr. AEE Common Stock, $.01 Par Value Tax liability -8.34% -28,154 309,499 27 Feb 2026 Direct
Theresa A. Shaw AEE Common Stock, $.01 Par Value Tax liability -3.63% -1,296 34,397 27 Feb 2026 Direct
Ajay K. Arora AEE Common Stock, $.01 Par Value Tax liability -6.26% -1,035 15,499 27 Feb 2026 Direct
Michael L. Moehn AEE Common Stock, $.01 Par Value Tax liability -6.36% -14,355 211,525 27 Feb 2026 Direct
Gwendolyn G. Mizell AEE Common Stock, $.01 Par Value Tax liability -13% -943 6,324 27 Feb 2026 Direct
Shawn E. Schukar AEE Common Stock, $.01 Par Value Tax liability -4.85% -3,148 61,805 27 Feb 2026 Direct
Ryan J. Martin AEE Common Stock, $.01 Par Value Tax liability -2.55% -726 27,779 27 Feb 2026 Direct
Eric Seidler V AEE Common Stock, $.01 Par Value Tax liability -6.54% -982 14,041 27 Feb 2026 Direct
Mark C. Lindgren AEE Common Stock, $.01 Par Value Tax liability -4.18% -2,054 47,046 27 Feb 2026 Direct
Leonard P. Singh AEE Common Stock, $.01 Par Value Tax liability -14.3% -5,478 32,776 27 Feb 2026 Direct
Patrick E. Smith AEE Common Stock, $.01 Par Value Tax liability -4.37% -910 19,910 27 Feb 2026 Direct
Rafael Flores AEE Common Stock, $.01 Par Value Sale -10.3% $178,432 $111.52 -1,600 13,953 17 Feb 2026 Direct
Ajay K. Arora AEE Common Stock, $.01 Par Value Sale -12.5% $334,320 $111.44 -3,000 21,037 17 Feb 2026 By family trust
Theresa A. Shaw AEE Common Stock, $.01 Par Value Sale -0.9% $36,364 $111.89 -325 35,693 17 Feb 2026 Direct
Gwendolyn G. Mizell AEE Common Stock, $.01 Par Value Sale -32.8% $393,473 $110.90 -3,548 7,267 17 Feb 2026 Direct
Shawn E. Schukar AEE Common Stock, $.01 Par Value Award 15.1% 8,523 64,953 05 Feb 2026 Direct
Leonard P. Singh AEE Common Stock, $.01 Par Value Award 64.7% 15,023 38,254 05 Feb 2026 Direct
Patrick E. Smith AEE Common Stock, $.01 Par Value Award 39% 5,841 20,822 05 Feb 2026 Direct
Gwendolyn G. Mizell AEE Common Stock, $.01 Par Value Award 40.9% 3,141 10,815 05 Feb 2026 Direct
Michael L. Moehn AEE Common Stock, $.01 Par Value Award 17% 32,804 225,880 05 Feb 2026 Direct
Ryan J. Martin AEE Common Stock, $.01 Par Value Award 12% 3,046 28,505 05 Feb 2026 Direct
Ajay K. Arora AEE Common Stock, $.01 Par Value Award 31.6% 3,965 16,534 05 Feb 2026 Direct
Mark C. Lindgren AEE Common Stock, $.01 Par Value Award 15.1% 6,431 49,099 05 Feb 2026 Direct
Martin J. Lyons Jr. AEE Common Stock, $.01 Par Value Award 25.2% 68,010 337,652 05 Feb 2026 Direct
Eric Seidler V AEE Common Stock, $.01 Par Value Award 29.6% 3,430 15,023 05 Feb 2026 Direct
Theresa A. Shaw AEE Common Stock, $.01 Par Value Award 14.1% 4,459 36,018 05 Feb 2026 Direct
David Matthew Feinberg AEE Common Stock, $.01 Par Value Award 116.7% 4,449 8,260 05 Feb 2026 Direct
Michael L. Moehn AEE Common Stock, $.01 Par Value Sale -3.26% $673,400 $103.60 -6,500 193,076 02 Feb 2026 Direct
Jamie L. Engstrom AEE Common Stock, $.01 Par Value Award 1,686 1,686 05 Jan 2026 Direct
Steven H. Lipstein AEE Common Stock, $.01 Par Value Award 4.66% 1,686 37,862 05 Jan 2026 Direct
Catherine S. Brune AEE Common Stock, $.01 Par Value Award 6.64% 1,686 27,078 05 Jan 2026 Direct
Leo S. Mackay Jr. AEE Common Stock, $.01 Par Value Award 16.6% 1,686 11,834 05 Jan 2026 Direct
Craig S. Ivey AEE Common Stock, $.01 Par Value Award 11.3% 1,686 16,597 05 Jan 2026 Direct
Rafael Flores AEE Common Stock, $.01 Par Value Award 12.2% 1,686 15,553 05 Jan 2026 Direct
Ward H. Dickson AEE Common Stock, $.01 Par Value Award 9.77% 1,686 18,946 05 Jan 2026 Direct
Ellen M. Fitzsimmons AEE Common Stock, $.01 Par Value Award 3.28% 1,686 53,026 05 Jan 2026 Direct
Cynthia J. Brinkley AEE Common Stock, $.01 Par Value Award 14.3% 1,686 13,494 05 Jan 2026 Direct
Richard J. Harshman AEE Common Stock, $.01 Par Value Award 8.24% 1,686 22,135 05 Jan 2026 Direct
Vondran Steven O AEE Common Stock, $.01 Par Value Award 88.2% 1,686 3,597 05 Jan 2026 Direct
* marks a reported price that did not pass the local price check.
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