PRTA PROTHENA CORP PUBLIC LTD COcompanySEC Filings & Insider Trading Activity 2026
Latest PROTHENA CORP PUBLIC LTD CO (PRTA) SEC EDGAR filings in 2026 — including the most recent 10-K annual report filed on February 27, 2026, a 10-Q quarterly report filed on November 6, 2025, an 8-K current report filed on February 27, 2026. SignalX aggregates every new 10-K annual report, 10-Q quarterly report, 8-K current report, and Form 4 insider transaction for PROTHENA CORP PUBLIC LTD CO (PRTA) (SEC CIK 1559053), with AI-powered section-by-section summaries updated daily.
Latest 2026 SEC Filing Dates
AI 8-K Current Report AnalysisRecent 8-K Filings
Item 7.01: Regulation FD Disclosure
- • Share repurchase program authorized up to $100.0M of outstanding ordinary shares (par value $0.01/share)
- • Buyback signals management confidence in valuation at current price levels — typically bullish signal for existing shareholders
Item 8.01: Other Events
- • Share repurchase plan authorized up to $100M of ordinary shares ($0.01 par value), expiring Dec 31, 2026
- • Plan is discretionary — no obligation to repurchase any shares, can be suspended or discontinued at any time
Recent 8-K FilingsCurrent Reports
AI-powered analysis of PROTHENA CORP PUBLIC LTD CO (PRTA) 8-K current reports disclosing material events.
Latest 2026 SEC Filings — 10-K, 10-Q, 8-K & Form 4
| Form | Filing Date | Period | Analysis | SEC |
|---|---|---|---|---|
8-K | Feb 27, 2026 | — | Analysis | — |
10-K | Feb 27, 2026 | Dec 31, 2025 | — | |
8-K | Feb 19, 2026 | — | — | |
8-K | Dec 12, 2025 | — | — | |
10-Q | Nov 6, 2025 | Sep 30, 2025 | — | |
10-Q | Aug 4, 2025 | Jun 30, 2025 | — | |
10-Q | May 8, 2025 | Mar 31, 2025 | — | |
10-K | Feb 27, 2025 | Dec 31, 2024 | — | |
10-Q | Nov 12, 2024 | Sep 30, 2024 | — | |
10-Q | Aug 8, 2024 | Jun 30, 2024 | — | |
10-Q | May 8, 2024 | Mar 31, 2024 | — | |
10-K | Feb 22, 2024 | Dec 31, 2023 | — | |
10-Q | Nov 2, 2023 | Sep 30, 2023 | — | |
10-Q | Aug 3, 2023 | Jun 30, 2023 | — | |
10-Q | May 4, 2023 | Mar 31, 2023 | — | |
10-K | Feb 28, 2023 | Dec 31, 2022 | — | |
10-Q | Nov 3, 2022 | Sep 30, 2022 | — | |
10-Q | Aug 8, 2022 | Jun 30, 2022 | — | |
10-Q | May 5, 2022 | Mar 31, 2022 | — | |
10-K | Feb 25, 2022 | Dec 31, 2021 | — | |
10-Q | Nov 4, 2021 | Sep 30, 2021 | — | |
10-Q | Aug 5, 2021 | Jun 30, 2021 | — | |
10-Q | May 11, 2021 | Mar 31, 2021 | — | |
10-K | Feb 26, 2021 | Dec 31, 2020 | — | |
10-Q | Nov 4, 2020 | Sep 30, 2020 | — |
Frequently Asked Questions
What are the latest PRTA SEC filings in 2026?
PROTHENA CORP PUBLIC LTD CO (PRTA) has filed a 10-K annual report on February 27, 2026, a 10-Q quarterly report on November 6, 2025, an 8-K current report on February 27, 2026 with the SEC. SignalX tracks every new SEC EDGAR filing daily, including 10-K, 10-Q, 8-K, and Form 4 insider transactions, with AI-powered summaries of key sections.
When did PRTA file its most recent 10-K annual report?
PROTHENA CORP PUBLIC LTD CO (PRTA) filed its most recent 10-K annual report on February 27, 2026. The 10-K includes audited financial statements, business overview, risk factors, and management discussion, all available on SignalX with AI-generated summaries and XBRL financial data.
How do I view PRTA 10-Q quarterly reports?
PROTHENA CORP PUBLIC LTD CO (PRTA)'s most recent 10-Q quarterly report was filed on November 6, 2025. SignalX displays every PRTA 10-Q with AI-generated summaries of the MD&A (Management Discussion & Analysis) and Risk Factors sections, plus links to the original SEC EDGAR document.
What 8-K current reports has PRTA filed recently?
PROTHENA CORP PUBLIC LTD CO (PRTA)'s most recent 8-K was filed on February 27, 2026. 8-K filings disclose material corporate events such as earnings releases, executive changes, mergers, and other significant developments. SignalX surfaces each 8-K with item-level summaries so you can quickly see what happened.
Where can I find PRTA insider trading activity (Form 4)?
SignalX aggregates every PRTA Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.
How often does PRTA file with the SEC?
PROTHENA CORP PUBLIC LTD CO (PRTA) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new PRTA filing with AI-powered analysis.
What is the difference between 10-K, 10-Q, and 8-K SEC filings?
A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs — such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for PROTHENA CORP PUBLIC LTD CO (PRTA).
What is PRTA's SEC CIK number?
PROTHENA CORP PUBLIC LTD CO (PRTA)'s SEC CIK (Central Index Key) number is 1559053. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 1559053 to look up all PRTA filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.
Where can I find PRTA return on equity (ROE) and financial data?
SignalX extracts XBRL financial data from PROTHENA CORP PUBLIC LTD CO (PRTA) 10-K annual filings, including revenue, net income, gross profit, operating income, EPS, total assets, stockholders' equity, and operating cash flow. Return on equity (ROE) can be derived from net income divided by stockholders' equity. Multi-year financial trends are displayed in the Financial Summary table above.
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