Company: PRTA
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001559053-25-000031
Chunk: 22

Company: PROTHENA CORP PUBLIC LTD CO
Filing Date: 2025-08-04
Form: 10-Q
Item: Part I, Item 1
Chunk 22
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407                            11,767      13,335  
  Restructuring costs (1)                                              2,081      —                                            2,081              
  Total share-based compensation expense      $                       12,418      $         12,041      $                     23,367      24,424  

________________

(1) Restructuring costs for the three and six months ended June 30, 2025 includes $ 2.1

The Company recognized tax benefits from share-based awards of $ 2.4 2.1 4.4 4.3

The fair value of the options granted to employees and non-employee directors during the six months ended June 30, 2025 and 2024 was estimated as of the grant date using the Black-Scholes option-pricing model using the key assumptions listed in the following table.

                                              Three Months Ended                                         Six Months Ended                          
                                                        June 30,                                                 June 30,                          
                                                            2025                    2024                             2025                    2024  
 ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  Expected term (in years)                                  4.81       5.76         4.60       5.56                  4.78       5.76         4.60  
  Expected volatility                                      77.7%      79.0%        74.5%      77.8%                 76.5%      79.0%         74.5  
  Risk-free interest rate                                   3.8%       4.2%         4.4%       4.7%                  3.8%       4.4%          3.8  
  Expected dividend yield                                     —%                      —%                               —%                      —%  
  Weighted average grant date fair value                  $ 4.77                 $ 14.58                           $ 9.49                 $ 19.21  

The fair value of employee stock options is amortized on a straight-line basis over the requisite service period for each award. Each of the inputs discussed above is subjective and generally requires management judgment to determine.

The following table summarizes the Company’s stock option activity during the six months ended June 30, 2025:

                                                                    Weighted                     Weighted      Aggregate       
                                                                    Average                       Average      Intrinsic       
                                                                    Exercise                    Remaining      Value