Southern Company Officer Matthew M. Kim Files Form 144 for 100 Shares
SOUTHERN CO
Subscribe to track SO
Premium users can add ticker alerts and receive realtime notification updates.
Filing Summary
Southern Company officer Matthew M. Kim has filed a Form 144 notice of proposed sale covering 100 shares of Common Stock with an estimated aggregate market value of $8,273 through Merrill Lynch. The shares were originally acquired via a performance stock vest on February 7, 2024. The sale is executed under a pre-established Rule 10b5-1 trading plan adopted on November 25, 2025.
Comprehensive Analysis
Executive Summary
On October 1, 2026, The Southern Company (NYSE: SO) officer Matthew M. Kim filed a Form 144 indicating the intention to sell 100 shares of common stock with an aggregate market value of approximately $8,273 (an implied share price of $82.73).
Transaction Details
- Insider: Matthew M. Kim
- Role: Officer
- Broker: Merrill Lynch
- Proposed Sale Date: October 1, 2026
- Shares to be Sold: 100
- Estimated Aggregate Market Value: $8,273
- Acquisition Origin: 100 shares acquired on February 7, 2024, via a performance stock vest from the issuer.
- Rule 10b5-1 Plan: The transaction is scheduled under a Rule 10b5-1 trading plan adopted on November 25, 2025.
Historical Context (Past 3 Months)
During the prior three-month period, the filer completed the following transactions:
- September 3, 2026: 1,400 shares sold for gross proceeds of $124,418 (~$88.87/share)
- September 1, 2026: 100 shares sold for gross proceeds of $8,845 ($88.45/share)
- August 3, 2026: 100 shares sold for gross proceeds of $9,428 ($94.28/share)
Market & Trading Impact
Given the nominal size of the proposed transaction (100 shares vs. 1.15 billion shares outstanding) and adherence to a pre-arranged Rule 10b5-1 trading plan, this filing carries Low trading significance and is routine in nature.
Get Real-Time Alerts
Join our community to receive instant notifications when high-significance filings are published
Important Disclaimer
This content is drawn from public SEC filings and may contain errors. It is for informational purposes only and is not investment, legal, or tax advice.
Nothing here is a recommendation to buy, sell, or hold any security. Do your own due diligence.