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PROTHENA CORPORATION PUBLIC LIMITED COMPANY: filings

Every PROTHENA CORPORATION PUBLIC LIMITED COMPANY annual and quarterly report in the SEC record with the published financial measures it tagged, 54 filings, each linked to its SEC index.

Filings with published measures

Each page shows what one filing reported, as tagged in that filing, with the periods it covered. Later filings can restate a value; the company overview shows the latest-filed value per period.

FormFiledFiscal periodMeasuresFactsSEC accession
10-Q2026-08-06fiscal Q2 2026401200001559053-26-000022
10-Q2026-05-07fiscal Q1 202640840001559053-26-000017
10-K2026-02-27fiscal FY 2025441160001559053-26-000008
10-Q2025-11-06fiscal Q3 2025411260001559053-25-000044
10-Q2025-08-04fiscal Q2 2025411220001559053-25-000031
10-Q2025-05-08fiscal Q1 202541860001559053-25-000023
10-K2025-02-27fiscal FY 2024451180001559053-25-000009
10-Q2024-11-12fiscal Q3 2024421280001559053-24-000032
10-Q2024-08-08fiscal Q2 2024421240001559053-24-000025
10-Q2024-05-08fiscal Q1 202443900001559053-24-000014
10-K2024-02-22fiscal FY 2023461220001559053-24-000008
10-Q2023-11-02fiscal Q3 2023431300001559053-23-000033
10-Q2023-08-03fiscal Q2 2023431280001559053-23-000026
10-Q2023-05-04fiscal Q1 202342880001559053-23-000016
10-K2023-02-28fiscal FY 2022451180001559053-23-000005
10-Q2022-11-03fiscal Q3 2022441330001559053-22-000045
10-Q2022-08-08fiscal Q2 2022441290001559053-22-000032
10-Q2022-05-05fiscal Q1 202244910001559053-22-000023
10-K2022-02-25fiscal FY 2021481250001559053-22-000008
10-Q2021-11-04fiscal Q3 2021441280001559053-21-000045
10-Q2021-08-05fiscal Q2 2021431240001559053-21-000037
10-Q2021-05-11fiscal Q1 202140840001559053-21-000016
10-K2021-02-26fiscal FY 2020451500001559053-21-000008
10-Q2020-11-04fiscal Q3 2020391080001559053-20-000040
10-Q2020-08-06fiscal Q2 2020391080001559053-20-000026
10-Q2020-05-06fiscal Q1 202039820001559053-20-000013
10-K2020-03-03fiscal FY 2019451520001559053-20-000005
10-Q2019-11-05fiscal Q3 2019371050001559053-19-000035
10-Q2019-08-06fiscal Q2 2019371050001559053-19-000023
10-Q2019-05-07fiscal Q1 201937800001559053-19-000013
10-K2019-03-15fiscal FY 2018421450001559053-19-000007
10-Q2018-11-06fiscal Q3 201835950001559053-18-000034
10-Q2018-08-07fiscal Q2 201834930001559053-18-000025
10-Q2018-05-09fiscal Q1 201834710001559053-18-000014
10-K2018-02-26fiscal FY 2017411420001559053-18-000008
10-Q2017-11-07fiscal Q3 201734920001559053-17-000031
10-Q2017-08-09fiscal Q2 201734920001559053-17-000025
10-Q2017-05-09fiscal Q1 201733660001559053-17-000013
10-K2017-02-27fiscal FY 2016411400001559053-17-000005
10-Q2016-11-02fiscal Q3 201634920001559053-16-000084
10-Q2016-08-02fiscal Q2 201634920001559053-16-000074
10-Q2016-05-04fiscal Q1 201634700001559053-16-000058
10-K2016-02-25fiscal FY 2015411420001559053-16-000051
10-Q2015-11-02fiscal Q3 2015381080001559053-15-000042
10-Q2015-08-05fiscal Q2 2015371060001559053-15-000034
10-Q2015-05-06fiscal Q1 201537760001559053-15-000023
10-K2015-03-13fiscal FY 2014391300001559053-15-000006
10-Q2014-11-04fiscal Q3 2014351020001559053-14-000052
10-Q2014-08-05fiscal Q2 2014361040001559053-14-000047
10-Q2014-05-05fiscal Q1 201435720001559053-14-000032
10-K2014-03-07fiscal FY 2013341060001559053-14-000007
10-Q2013-11-12fiscal Q3 201328720001559053-13-000010
10-Q2013-08-13fiscal Q2 201327640001193125-13-331182
10-Q2013-05-15fiscal Q1 201328550001193125-13-220259

Inspect the source

Entity
PROTHENA CORPORATION PUBLIC LIMITED COMPANY / CIK 0001559053
Captured
2026-09-20T09:19:31.579Z
SEC response SHA-256
e8898202eaa7a48d96a2543aaf8c585eb5bdfdf7dee9aa54e7fa189c19132a42

Current SEC company facts · Download the original response snapshot (gzip) · Download the selected JSON

Every published concept a filing tagged, with the periods it covered, as reported in that filing at capture time. Forms 10-K, 10-K/A, 10-Q, 10-Q/A, 20-F, 20-F/A, 40-F, 40-F/A. A filing page needs at least 8 published concepts. Later filings can restate these values; the company history pages show the latest-filed value per period.

Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. Validate a separately constructed return series with the validation API; accounting values are not returns.

Use this in research

A financial period ends before its results become public. Use the filing date as a minimum availability boundary, inspect amendments, and retain the original filing vintage when testing historical signals. This latest-filed selection can contain information unavailable at the time.

These pages do not supply prices, total-return histories, corporate-action adjustments or a tradable universe. Build those inputs separately before evaluating a strategy. A profitable backtest can still reflect selection bias or costs that were left out.

Research methodology · Execution and cost assumptions · Check backtest overfitting

Build with the open-source tools

Use these accounting records as inspectable inputs. When you have constructed a return series, the validation tools can help test its statistical evidence and preserve the result with its limitations.

Read the published dataset with Python
import json
from urllib.request import urlopen

with urlopen("https://canlicapital.com/company-data/0001559053.json") as response:
    record = json.load(response)
print(record["fetched_at"])
print(record["policy"])
for concept in record["concepts"]:
    print(concept["tag"], next(iter(concept["observations"])))