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SEC EDGARAUG 41 min read$SO

Kim Matthew M. sold $9K of SO

Kim Matthew M. (Comptroller) sold 100 shares of SOUTHERN CO (SO) at $94.28 on 2026-08-03 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Kim Matthew M.
Published Aug 4, 2026, 2:30 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 4, 2026, 2:33 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$SO
Neutral
high confidence
Mentioned
$SO
Relevance
2/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$SONeutralLow
01

Why it matters

The newest fact is the specific open-market sale: 100 shares at $94.28 on 2026-08-03, with holdings after transaction of 6,488 shares, under a pre-arranged 10b5-1 plan.

02

Market read

Traders may note the insider sale, but the 10b5-1 pre-arrangement and small dollar value make it unlikely to drive a meaningful repricing.

03

What to watch

The sale size is small ($9.4k) relative to typical market moves, and the 10b5-1 structure suggests the timing is not discretionary.

Relevance 2/10Novelty 2/10Timing: filed 2026-08-04, transaction dated 2026-08-03

Background

The article is a SEC Form 4 insider transaction disclosure for Southern Co (SO).

Company-level read

Ticker impact

$SONeutralHigh confidence
Context

Southern Co (SO) disclosed an insider open-market sale by Comptroller Kim Matthew M. of 100 shares at $94.28 on 2026-08-03 under a 10b5-1 plan.

Expected impact

Low likelihood of a sustained price move based solely on this filing.

Evidence & confidence

The filing is an insider transaction (not a guidance, contract, or enforcement event) and explicitly states a pre-arranged 10b5-1 plan, which typically reduces interpretive value.

Market effects

Sector

No clear sector read-through; this is company-specific insider trading disclosure.

Regional

None indicated.

Global

None indicated.

Counterpoint

What could challenge this read

Even with a 10b5-1 plan, repeated insider selling can coincide with executives de-risking ahead of personal liquidity needs, which some traders may still treat as a mild negative.

Key entities

  • issuer
    Southern Co

    Company subject of the Form 4 insider transaction disclosure.

  • insider
    Kim Matthew M.

    Comptroller who executed the open-market sale under a 10b5-1 plan.

Read at source← All news

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

SO insider trading history →

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