| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Narayan Shruthi | President | ONE PENUMBRA PLACE, ALAMEDA | /s/ Johanna Roberts, as attorney-in-fact for Shruthi Narayan | 2025-10-17 | 0002086163 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | PEN | Common Stock | Tax liability | -$327K | -1.29K | -4.58% | $252.61 | 27K | Oct 15, 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Shares were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of restricted stock units granted to the Reporting Person. |
| F2 | A portion of these shares is subject to vesting. |