Cummiskey Christopher 4

What Happened

• Christopher Cummiskey, Executive Vice President of Southern Co (SO), had performance restricted stock units (PRSUs) vest across Jan 31 and Feb 1, 2026. A total of 3,509 shares were converted to common stock upon vesting (1,794 on Jan 31 and 1,715 on Feb 1). To satisfy tax withholding obligations, 758 shares (valued at $67,697) and 834 shares (valued at $74,485) were withheld, totaling 1,592 shares and $142,182. The transactions are reported as conversions/settlements of derivative awards (code M) with withholding for taxes (code F).

Key Details

• Transaction dates and prices:
  • Jan 31, 2026: 1,794 RSUs converted to 1,794 shares (acquired at $0); 758 shares withheld @ $89.31 ($67,697).
  • Feb 1, 2026: 1,715 RSUs converted to 1,715 shares (acquired at $0); 834 shares withheld @ $89.31 ($74,485).
  • Additional derivative entries (1,537 and 1,674 units) reflect related RSU tranches as noted in footnotes.
• Net new shares from these vestings (after withholding): 3,509 − 1,592 = 1,917 shares added to Cummiskey’s holdings from these events.
• Shares owned after transaction: Not specified in the provided filing excerpt.
• Footnotes: Vesting relates to the second 1/3 of PRSUs granted Jan 31, 2024 and the final 1/3 of PRSUs granted Feb 1, 2023; amounts include accrued dividend equivalents and note that shares were withheld to satisfy tax requirements (see F1–F5).
• Filing timeliness: Report filed Feb 3, 2026; no late filing indication provided in the excerpt.

Context

• These were not open-market sales or purchases but routine settlement of performance-based RSUs. The withholding of shares to pay tax liabilities is common in RSU vestings and does not necessarily indicate a buy or sell signal. The entries labeled M indicate conversion/exercise of derivative awards (RSUs) into shares; entries labeled F indicate shares withheld for tax withholding.