| 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 | 18 Feb 2026 | 0002103004 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MCHB | Class A Common Stock | Options Exercise | +3,398 | +26% | 16,642 | 15 Feb 2026 | Direct | F1 | ||
| transaction | MCHB | Class A Common Stock | Tax liability | $21,518 | -1,400 | -8.4% | $15.37 | 15,242 | 15 Feb 2026 | Direct | |
| transaction | MCHB | Class A Common Stock | Options Exercise | +1,961 | +13% | 17,203 | 15 Feb 2026 | Direct | F1 | ||
| transaction | MCHB | Class A Common Stock | Tax liability | $12,419 | -808 | -4.7% | $15.37 | 16,395 | 15 Feb 2026 | Direct | |
| transaction | MCHB | Class A Common Stock | Options Exercise | +2,915 | +18% | 19,310 | 15 Feb 2026 | Direct | F1 | ||
| transaction | MCHB | Class A Common Stock | Tax liability | $18,459 | -1,201 | -6.2% | $15.37 | 18,109 | 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 (2022) | Options Exercise | $0 | -3,398 | -100% | $0.000000 | 0 | 15 Feb 2026 | Class A Common Stock | 3,398 | Direct | F2, F3 | |
| transaction | MCHB | Incentive Units - Not Deferred (2023) | Options Exercise | $0 | -1,961 | -50% | $0.000000 | 1,961 | 15 Feb 2026 | Class A Common Stock | 1,961 | Direct | F2, F4 | |
| transaction | MCHB | Incentive Units - Not Deferred (2024) | Options Exercise | $0 | -2,915 | -33% | $0.000000 | 5,830 | 15 Feb 2026 | Class A Common Stock | 2,915 | Direct | F2, F5 |
| 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 | All shares have vested as of February 15, 2026. |
| F4 | The remaining incentive units vest on February 15, 2027. |
| F5 | The incentive units vest in two equal annual installments beginning February 15, 2027. |