Singh Leonard P 4

What Happened

• Leonard P. Singh, EVP & Chief Financial Officer of Ameren Corporation (AEE), had 5,478 shares disposed on February 27, 2026 to satisfy tax withholding obligations. The shares were valued at $113.28 each, for a total of $620,548. The transaction is reported under code F (payment of exercise price or tax liability).

Key Details

• Transaction date and price: February 27, 2026 — 5,478 shares at $113.28 per share (total $620,548).
• Transaction type: F — shares withheld/used to satisfy tax withholding in connection with vesting (reported as disposed).
• Shares owned after transaction: Not specified in this Form 4 filing.
• Footnotes:
  • F1: References estimated share equivalents held in the Ameren Savings Investment Plan as of Feb 28, 2026.
  • F2: Confirms shares were withheld by the issuer to satisfy tax withholding from vesting of performance share units and restricted stock units.
• Filing timeliness: Report filed March 3, 2026; this appears to be within the required filing window and not marked late.

Context

• This was a routine tax-withholding/cashless transaction related to vesting of equity awards (PSUs/RSUs), not an open-market sale initiated for investment reasons. Such withholding is common and reduces reported shares outstanding for the insider but does not necessarily indicate a change in the insider’s view on the company.