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SEC EDGARSEP 301 min read$COST

Adamo Claudine sold $2.0M of COST

Adamo Claudine (Executive Vice President) sold 2,200 shares of COSTCO WHOLESALE CORP /NEW (COST) at $915.93 ($2.02M total) on 2026-09-29.

Original reporting
SEC EDGAR · Adamo Claudine
Published Sep 30, 2026, 9:48 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 30, 2026, 9:52 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
$COST
Neutral
medium confidence
Mentioned
$COST
Relevance
6/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$COSTNeutralLow
01

Why it matters

The disclosed sale is modest relative to Costco's size, so any price move is expected to be limited.

02

Market read

Insider sale of $2M by a senior executive may cause slight short‑term pressure but is unlikely to affect long‑term outlook.

03

What to watch

The sale could be part of a pre‑planned 10b5‑1 plan despite the filing stating otherwise, or related to personal tax planning, which may not reflect company fundamentals.

Relevance 6/10Novelty 5/10Timing: post-market on 2026-09-29

Background

SEC Form 4 filings disclose insider transactions; they are primary sources for insider activity.

Company-level read

Ticker impact

$COSTNeutralMedium confidence
Context

Executive Vice President Adamo Claudine sold 2,200 Costco shares for $2.0M on 2026-09-29, reducing her stake to 7,134 shares.

Expected impact

likely slight downward pressure as the market prices the insider sell.

Evidence & confidence

A $2M sale by a senior executive is material but small relative to Costco's market cap; traders may watch for short-term impact.

Market effects

Sector

Minimal impact on retail sector; insider sales are routine and unlikely to shift sector sentiment.

Regional

No significant regional effect; Costco operates globally but the transaction is company‑specific.

Global

Low; the filing is a standard Form 4 with limited broader market relevance.

Counterpoint

What could challenge this read

Some traders may view the sale as a signal of upcoming weakness and short the stock.

Key entities

  • Executive
    Adamo Claudine

    Executive Vice President of Costco Wholesale Corp.

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.

COST insider trading history →

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