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PROTHENA CORP PUBLIC LTD CO

For the period ended Jun 30, 2025. Filed Aug 4, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2025 · Filed Aug 4, 2025

PRTA$8.78+10.1%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Item 6. EXHIBITS

EXHIBIT INDEX

Previously Filed
ExhibitNo.DescriptionFormFile No.Filing DateExhibitFiled Herewith
10.1#Sixth Amendment to the Prothena Corporation plc 2018 Long Term Incentive Plan8-K001-356765/16/202510.1
10.2#Form of Restricted Share Unit Award Agreement between Prothena Corporation plc and its Named Executive Officers under the Prothena Corporation plc 2018 Long Term Incentive PlanX
31.1Certification of Principal Executive Officer pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002X
31.2Certification of Principal Financial Officer pursuant to Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002X
32.1*Certification of Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002X
101.INSXBRL Instance Document - The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL documentX
101.SCHInline XBRL Taxonomy Extension Schema DocumentX
101.CALInline XBRL Taxonomy Extension Calculation Linkbase DocumentX
101.DEFInline XBRL Taxonomy Extension Definition Linkbase DocumentX
101.LABInline XBRL Taxonomy Extension Label Linkbase DocumentX
101.PREInline XBRL Taxonomy Extension Presentation Linkbase DocumentX
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

#Indicates management contract or compensatory plan or arrangement.

*Exhibit 32.1 is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, nor shall such exhibit be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise specifically stated in such filing.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Quarterly Report on Form 10-Q to be signed on its behalf by the undersigned, thereunto duly authorized.

Dated:August 4, 2025Prothena Corporation plc(Registrant)
/s/ Gene G. Kinney
Gene G. Kinney
President and Chief Executive Officer
/s/ Tran B. Nguyen
Tran B. Nguyen
Chief Financial Officer and Chief Strategy Officer
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.