$PRTA

Kinney Gene G. sold (to issuer) $719K of PRTA

Kinney Gene G. (President and CEO) sold (to issuer) 84,000 shares of PROTHENA CORP PUBLIC LTD CO (PRTA) at $8.56 ($0.72M total) on 2026-07-28.

Original reporting
SEC EDGAR · Kinney Gene G.
Published Jul 31, 2026, 12:31 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Jul 31, 2026, 12:32 AM 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
$PRTA
Neutral
high confidence
Mentioned
$PRTA
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$PRTANeutralLow
01

Why it matters

The newest fact is the CEO’s sale to the issuer of 84,000 shares at $8.56/share on 2026-07-28, reported via a Form 4 filed 2026-07-30.

02

Market read

Traders may monitor insider selling as a sentiment input, but this filing alone does not provide a new fundamental catalyst.

03

What to watch

The article does not state whether the sale was part of a broader compensation or buyback program, nor does it provide context on prior insider activity or total holdings changes over time.

Relevance 5/10Novelty 3/10Timing: Form 4 filed 2026-07-30 for a 2026-07-28 sale

Background

The article is an SEC Form 4 insider transaction disclosure for Prothena Corp Public Ltd Co.

Company-level read

Ticker impact

$PRTANeutralHigh confidence
Context

Prothena CEO Kinney Gene G. sold 84,000 shares to the issuer at $8.56/share, leaving 68,793 shares after the Form 4.

Expected impact

Likely limited near-term impact; any effect is more signaling than fundamental.

Evidence & confidence

The filing is a Form 4 insider transaction with no 10b5-1 plan and no accompanying company guidance, deal, or regulatory action in the text.

Market effects

Minimal, as the disclosure is company-specific and does not indicate sector-wide regulatory or clinical changes.

None indicated.

None indicated.

Counterpoint

Even without a 10b5-1 plan, a sale to the issuer can reflect liquidity needs rather than bearish expectations, so the market may ignore it.

Key entities

  • PROTHENA CORP PUBLIC LTD CO

    Subject of the Form 4 insider transaction disclosure (PRTA).

  • Kinney Gene G.

    President and CEO who sold shares to the issuer.

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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