Company: ARWR
Filing Date: 2025-10-10
Form Type: 10-K/A
Source: 0000879407-25-000013
Chunk: 43

Company: ARROWHEAD PHARMACEUTICALS, INC.
Filing Date: 2025-10-10
Form: 10-K/A
Chunk 43
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 reasonable particularity the breach and harm.

Pursuant to his offer of employment by the Company, Mr. Myszkowski is entitled to severance pay equal to three months’ base salary plus an amount equal to the premiums on his medical and dental benefits for the same period upon termination of his employment without cause.

Pursuant to his offer of employment by the Company, Mr. O’Brien is entitled to severance pay equal to six months’ base salary upon a qualifying termination of his employment without cause only upon change of control as defined in the Company’s 2013 Incentive Plan.

The Company has not entered into a severance arrangement with Dr. San Martin or Dr. Hamilton or Ms. Oliver.

Additionally, pursuant to the 2004 Equity Incentive Plan, the 2013 Incentive Plan, and the 2021 Incentive Plan, any unvested awards held by plan participants, including the NEOs, become fully vested upon a change of control of the Company, except as otherwise determined by the Board and except with respect to the outstanding awards held by the CEO whose awards will only become fully vested if he experiences a qualifying termination of employment following a change of control.

The following tables set forth information regarding potential termination and change of control arrangements with our executive officers had their employment been terminated or a change in control of the Company taken place on September 30, 2024:

#### Termination Payments
| Triggering Event                                      |     | Salary 
 ($)    |         |     | Benefits 
 ($)      |       |     | Stock  
 Awards 
 (1)($) |            |     | Option 
 Awards 
 (1)($) |   |     | Total |            |
| Termination by Employer without Cause                 |     |        |         |     |          |       |     |        |            |     |        |   |     |       |            |
| Christopher Anzalone (2)                              |     |        |  80,000 |     |          | 2,307 |     |        |          — |     |        | — |     |       |     82,307 |
| Kenneth Myszkowski                                    |     |        | 140,000 |     |          | 8,848 |     |        |          — |     |        | — |     |       |    148,848 |
| Patrick O’Brien                                       |     |        |       — |     |          |     — |     |        |