Martin Ryan J 4

What Happened Ryan J. Martin, Senior Vice President — Finance at Ameren Corporation (AEE), had 726 shares withheld on February 27, 2026 to satisfy tax withholding obligations tied to equity vesting. The withheld shares were valued at $113.28 each, for a total of approximately $82,241. This was a tax-withholding disposition (routine), not an open-market sale.

Key Details

• Transaction date: 2026-02-27; Price per share: $113.28; Total value: ~$82,241.
• Transaction code: F (shares withheld to satisfy tax withholding).
• Filing date (Form 4): 2026-03-03 — filed within the SEC’s 2-business-day window for Form 4 (timely).
• Shares owned after transaction: Not specified in the provided filing; footnote F1 notes an estimated number of share equivalents in the Ameren Savings Investment Plan as of 2026-02-28.
• Footnote F2 explains shares were withheld by the issuer to satisfy tax withholding obligations arising from the vesting of performance share units and restricted stock units.

Context Code F transactions reflect withholding to cover tax liabilities from vesting events (a common administrative action). These withholdings are routine and do not necessarily indicate the insider is selling shares for investment reasons.