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S-3 POSASR EX-FILING FEES 333-277290 0001559053 PROTHENA CORP PUBLIC LTD CO N/A N/A 0001559053 2026-02-27 2026-02-27 0001559053 1 2026-02-27 2026-02-27 iso4217:USD xbrli:pure xbrli:shares

Calculation of Filing Fee Tables

S-3

PROTHENA CORP PUBLIC LTD CO

Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable

Security Type

Security Class Title

Fee Calculation or Carry Forward Rule

Amount Registered

Proposed Maximum Offering Price Per Unit

Maximum Aggregate Offering Price

Fee Rate

Amount of Registration Fee

Carry Forward Form Type

Carry Forward File Number

Carry Forward Initial Effective Date

Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward

Newly Registered Securities
Fees to be Paid
Fees Previously Paid 1 Equity Ordinary Shares, $0.01 par value per share 457(o) 200,000,000 $ 200,000,000.00 $ 27,620.00
Carry Forward Securities
Carry Forward Securities

Total Offering Amounts:

$ 200,000,000.00

$ 27,620.00

Total Fees Previously Paid:

$ 27,620.00

Total Fee Offsets:

$ 0.00

Net Fee Due:

$ 0.00

Offering Note

1

(1) There are being registered hereunder such indeterminate number of ordinary shares as shall have an aggregate initial offering price not to exceed $200,000,000. In addition, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"), the ordinary shares being registered hereunder include such indeterminate number of ordinary shares as may be issuable with respect to the ordinary shares being registered hereunder as a result of stock splits, stock dividends or similar transactions. (2) The registrant previously paid a fee of $36,900 related to $250,000,000 of the registrant's ordinary shares that may be issued and sold under an equity distribution agreement, as amended, with Piper Sandler & Co., Stifel, Nicolaus & Company, Incorporated, Cantor Fitzgerald & Co., RBC Capital Markets, LLC, and Citizens JMP Securities, LLC, which is applied to the registrant's total registration fee.

Table 2: Fee Offset Claims and Sources ☑Not Applicable
Registrant or Filer Name Form or Filing Type File Number Initial Filing Date Filing Date Fee Offset Claimed Security Type Associated with Fee Offset Claimed Security Title Associated with Fee Offset Claimed Unsold Securities Associated with Fee Offset Claimed Unsold Aggregate Offering Amount Associated with Fee Offset Claimed Fee Paid with Fee Offset Source
Rules 457(b) and 0-11(a)(2)
Fee Offset Claims N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Fee Offset Sources N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Rule 457(p)
Fee Offset Claims N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Fee Offset Sources N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Table 3: Combined Prospectuses ☑Not Applicable

Security Type

Security Class Title

Amount of Securities Previously Registered

Maximum Aggregate Offering Price of Securities Previously Registered

Form Type

File Number

Initial Effective Date

N/A N/A N/A N/A N/A N/A N/A N/A