$CORT

Maduck Sean sold $419K of CORT

Maduck Sean (See Remarks) sold 3,664 shares of CORCEPT THERAPEUTICS INC (CORT) at $114.49 ($0.42M total) on 2026-08-14 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Maduck Sean
Published Aug 18, 2026, 8:30 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 18, 2026, 9:17 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.
AlphAI market briefInsider activity
Primary signal
$CORT
Neutral
high confidence
Mentioned
$CORT
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$CORTNeutralLow
01

Why it matters

The only new fact is the size, price, and timing of the officer’s open-market sale under a 10b5-1 plan; it does not include guidance, trial results, regulatory actions, or deal terms.

02

Market read

Traders may note insider selling, but the 10b5-1 structure and lack of accompanying fundamentals make this more of a sentiment datapoint than a catalyst.

03

What to watch

The filing does not indicate whether the sale was tax-related, diversification-related, or part of a scheduled liquidity program; without additional context, signal quality is low.

Relevance 3/10Novelty 3/10Timing: filed 2026-08-18 after-hours; reflects sale executed 2026-08-14

Background

The article is a SEC Form 4 insider transaction report for Corcept Therapeutics, filed on 2026-08-18, covering a sale executed 2026-08-14.

Company-level read

Ticker impact

$CORTNeutralHigh confidence
Context

Corcept Therapeutics disclosed an officer open-market sale of 3,664 shares at $114.49 on 2026-08-14 under a 10b5-1 plan.

Expected impact

Low likelihood of a sustained price move; any reaction is likely short-lived unless accompanied by other news.

Evidence & confidence

Form 4 details a pre-arranged 10b5-1 sale and provides no new company-specific information beyond the transaction itself.

Market effects

Minimal; insider-sale Form 4s typically do not reset sector expectations for pharma/biotech.

None indicated.

None indicated.

Counterpoint

10b5-1 plans can lead to regular selling regardless of outlook, so the disclosure may be misread as bearish.

Key entities

  • Corcept Therapeutics Inc

    Subject of the Form 4 insider transaction disclosure (ticker CORT).

  • Maduck Sean

    Officer who sold 3,664 shares at $114.49 under a pre-arranged 10b5-1 plan.

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.

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