PERRY MICHAEL S sold $1.0M of ARWR

PERRY MICHAEL S sold 11,600 shares of ARROWHEAD PHARMACEUTICALS, INC. (ARWR) at $87.30 ($1.01M total) on 2026-08-18.

Original reporting
SEC EDGAR · PERRY MICHAEL S
Published Aug 20, 2026, 9:22 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 20, 2026, 9:27 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
$ARWR
Bearish
medium confidence
Mentioned
$ARWR
Relevance
6/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$ARWRBearishLow
01

Why it matters

The Form 4 filing provides the first public disclosure of this insider transaction.

02

Market read

Insider sales by directors can influence investor sentiment, especially in biotech where insider confidence is closely watched.

03

What to watch

No accompanying news on drug trials or earnings to contextualize the sale.

Relevance 6/10Novelty 4/10Timing: filed 2026-08-20

Background

Arrowhead Pharmaceuticals is a clinical-stage biotech developing RNAi therapeutics.

Company-level read

Ticker impact

$ARWRBearishMedium confidence
Context

Director Perry Michael S sold 11,600 shares of Arrowhead Pharmaceuticals for $1.0M, reducing his holdings to 111,459 shares.

Expected impact

Possible modest downward pressure in the near term.

Evidence & confidence

A $1M sale by a director is material for a mid-cap biotech, but the amount is modest relative to market cap.

Market effects

May raise concerns for biotech sector investors monitoring insider activity.

Limited to U.S. biotech investors.

Low

Counterpoint

The sale could be a routine portfolio rebalancing, not a negative signal.

Key entities

  • Arrowhead Pharmaceuticals, Inc.

    Issuer of the insider transaction.

  • Perry Michael S

    Director and insider who sold shares.

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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