Transactions
14
Insider / AMEREN CORP
Mackay Leo S. Jr.
Director at AMEREN CORP
- Company
- AMEREN CORP
- First filing on record
- December 1, 2025
- Latest trade on record
- August 25, 2026
- SEC filings
- EDGAR ↗
Mackay Leo S. Jr., Director at AMEREN CORP, has disclosed 14 transactions in CTSH, AEE since December 1, 2025: 0 purchases (0 open-market buys) and 0 sales, worth about $0 at the reported prices. The latest was filed August 27, 2026, 2 days after the trade; 3 filings were late against the 2-business-day Form 4 deadline.
Open-market buys
0
Sales
0
Avg. disclosure lag
3.1d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Mackay Leo S. Jr. reported 14 transactions that were neither a purchase nor a sale, such as stock awards, option exercises or shares withheld for tax.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
1 of 6 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 14 | 6,106 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 11 | 0 | 0 |
| 2025 | 3 | 0 | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| CTSH | Other A | August 25, 2026 | August 27, 2026 | 2d | 22 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | August 25, 2026 | August 27, 2026 | 2d | 34 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | August 25, 2026 | August 27, 2026 | 2d | 25 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | June 2, 2026 | June 4, 2026 | 2d | 4,171 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | May 27, 2026 | May 29, 2026 | 2d | 18 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | May 27, 2026 | May 29, 2026 | 2d | 21 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | May 27, 2026 | May 29, 2026 | 2d | 29 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | February 26, 2026 | March 2, 2026 | 4d | 15 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | February 26, 2026 | March 2, 2026 | 4d | 18 | — | — | derivative | Form 4 ↗ | |
| CTSH | Other A | February 26, 2026 | March 2, 2026 | 4d | 24 | — | — | derivative | Form 4 ↗ | |
| AEE | Other A | January 5, 2026 | January 7, 2026 | 2d | 1,686 | — | — | Form 4 ↗ | ||
| CTSH | Other A | November 26, 2025 | December 1, 2025 | 5d | 12 | — | — | latederivative | Form 4 ↗ | |
| CTSH | Other A | November 26, 2025 | December 1, 2025 | 5d | 14 | — | — | latederivative | Form 4 ↗ | |
| CTSH | Other A | November 26, 2025 | December 1, 2025 | 5d | 19 | — | — | latederivative | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| August 27, 2026 | Form 4 | 0001558398-26-000010 | 3 | published | EDGAR ↗ |
| June 4, 2026 | Form 4 | 0001558398-26-000008 | 1 | published | EDGAR ↗ |
| May 29, 2026 | Form 4 | 0001558398-26-000006 | 3 | published | EDGAR ↗ |
| March 2, 2026 | Form 4 | 0001558398-26-000004 | 3 | published | EDGAR ↗ |
| January 7, 2026 | Form 4 | 0001558398-26-000002 | 1 | published | EDGAR ↗ |
| December 1, 2025 | Form 4 | 0001558398-25-000006 | 3 | published | EDGAR ↗ |
Other insiders at AMEREN CORP
- Kerdman Alina SVP, Controller & CAO 73 rows
- Gummadi Surya President - Americas 70 rows
- Kim John Sunshin CLO, CAO & Corporate Secretary 64 rows
- Diaz Kathryn Chief People Officer 60 rows
- Dalal Jatin P Chief Financial Officer 52 rows
- Varrier Rajesh President Operations CMD India 43 rows
- Singisetti Ravi Kumar Chief Executive Officer 40 rows
- Ayyar Balu Ganesh President - IOA & ISG 32 rows
- WIJNBERG SANDRA S Director 20 rows
- Patsalos-Fox Michael Director 19 rows
Everyone on file, with contracts and lobbying under the company's name: AMEREN CORP.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 6 | 14 | December 1, 2025 | August 27, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.