| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Shields Kristie S | EVP & Chief Compliance Counsel | 1111 CIVIC DRIVE, SUITE 390, WALNUT CREEK | /s/ Glenn Shrader, Attorney in fact for Kristie S. Shields | 03 Mar 2026 | 0002103004 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MCHB | Class A Common Stock | Award | +4,207 | +23% | 22,316 | 01 Mar 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | On March 1, 2026, the reporting person was granted 4,207 Restricted Stock Units ("RSUs"), which vest in three equal annual installments beginning March 1, 2027. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock and do not require the holder to pay any consideration on vesting. |