| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Pierce Christopher D | EVP & Chief Operating Officer | 1111 CIVIC DRIVE, SUITE 390, WALNUT CREEK | /s/ Glenn Shrader, Attorney in fact for Christopher D. Pierce | 18 Feb 2026 | 0002103476 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MCHB | Class A Common Stock | Options Exercise | +4,580 | +16% | 32,757 | 15 Feb 2026 | Direct | F1 | ||
| transaction | MCHB | Class A Common Stock | Tax liability | $29,003 | -1,887 | -5.8% | $15.37 | 30,870 | 15 Feb 2026 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MCHB | Incentive Units - Not Deferred (2024) | Options Exercise | $0 | -4,580 | -33% | $0.000000 | 9,162 | 15 Feb 2026 | Class A Common Stock | 4,580 | Direct | F2, F3 |
| Id | Content |
|---|---|
| F1 | Each incentive unit represents a contingent right to receive one share of Issuer Class A common stock. Incentive units do not require the holder to pay any consideration upon vesting. |
| F2 | Each incentive unit is the economic equivalent of one share of Issuer Class A Common Stock. |
| F3 | The incentive units vest in two equal annual installments beginning February 15, 2027. |