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PROTHENA CORP PUBLIC LTD CO

21 insider trades surfaced from the last year. This page shows only aggregate signals, not the underlying transactions, people, filings, filters, or AI workspace.

Snapshot

A narrow read on a much deeper workspace.

The preview gives search visitors enough signal to understand coverage. It does not expose transaction records, person-level profiles, filters, comparisons, or analyst workflows.

Insider trades, last 12 months
21
6 filed in the last 30 days
Acquisition / disposition count
21/0
Buy / Sell
Unique insiders active in the last year
14
Current insider positions tracked
29
29 active, 0 exited

Insider compensation

Public aggregate: $3.2M average total compensation across covered insiders.

Governance movement

Public aggregate: 3 governance events in the last year.

Institutional ownership

Public aggregate: 180 holders from the latest quarter.

Restricted sales and governance

Public counts, not the investigation layer.

The full product opens the underlying filings, insider context, historical holdings, comparison tools, and AI analysis.

Restricted-sale filings, 1Y
0
Restricted-sale insiders, 1Y
0
Planned sale shares, 1Y
0
Planned sale value, 1Y
$0.00
Insiders covered
8
Latest year: 2025
Personnel changes, 1Y
3
Board appointments, 1Y
0
Board departures, 1Y
2

Market context

Basic quote context for the preview.

Price
$9.41
Market cap
$489.5M
Volume
388,741
EPS
$0.60
Revenue
$51.1M
Employees
67

Company note

Context before the data.

Company Overview

Prothena Corp Public Ltd Co is a Healthcare company in the Biotechnology industry focused on late-stage clinical development for neurodegenerative diseases and rare amyloid disorders. Its pipeline includes partnered programs with Roche, Novo Nordisk, and Bristol Myers Squibb, as well as internal discovery assets built around its CYTOPE platform. The company is still development-stage in nature, with results driven by clinical milestones rather than product sales, and it remains highly dependent on trial outcomes, regulatory decisions, and collaboration activity. Recent filings show sharply lower collaboration revenue in 2025, reflecting the absence of large upfront payments recognized in 2024 and the wind-down of certain programs like PRX012 and birtamimab.

Executive Compensation Practices

For a biotechnology company like Prothena, executive compensation is typically tied less to current revenue and more to value-creating milestones such as clinical trial initiation, dosing readouts, regulatory submissions, partnership expansions, and successful financing management. Given the company’s late-stage pipeline and collaboration-heavy model, compensation plans would likely emphasize equity awards, long-term incentives, and performance metrics linked to pipeline advancement, partner execution, and cash discipline. The sharp reduction in R&D spending, workforce restructuring, and narrowing of the pipeline suggest that management may also be evaluated on operating efficiency and capital preservation. In this Healthcare / Biotechnology context, executives are often incentivized around binary clinical catalysts and strategic partnering outcomes, which can create outsized alignment with long-duration shareholder value creation.

Insider Trading Considerations

Insider trading patterns at Prothena are likely to be influenced by clinical trial timelines, partnership announcements, and financing needs rather than predictable business cycles. Because the company’s value is highly sensitive to data from programs such as prasinezumab, coramitug, BMS-986446, and PRX019, insiders may have heightened trading restrictions around major readouts, regulatory updates, and collaboration milestones. The company’s reduced cash balance and expected need for additional capital also make insider transactions more noteworthy, since share sales or purchases can be interpreted in light of dilution risk and future financing plans. As a Biotechnology company, Prothena is subject to standard blackout periods and heightened material nonpublic information controls, especially around clinical data, licensing discussions, and potential FDA/EMA-related events.

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