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MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2025
Oct 29, 2025
30057_dirs_2025-10-28_f4065d84-f010-4d0f-a05a-1dc986fb6c8b.zip
Director's Dealing
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SEC Form 4 — Statement of Changes in Beneficial Ownership
Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2025-10-25
Reporting Person: Hsing Michael (N/A)
Non-Derivative Transactions
| Date | Security | Code | Shares | Price | A/D | Holdings After | Ownership |
|---|---|---|---|---|---|---|---|
| 2025-10-25 | Common Stock | A | 302920 | — | Acquired | 1117587 | Direct |
Holdings (Non-Derivative)
| Security | Shares | Ownership |
|---|---|---|
| Common Stock | 133040 | Indirect |
| Common Stock | 12825 | Indirect |
Footnotes
F1: On October 25, 2022, the reporting person was granted market-based restricted stock units ("MSUs") subject to the achievement of five stock price targets and relative total stockholder return percentile rank over a three-year performance and vesting period. On October 25, 2025, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance criteria for the MSUs, which resulted in 302,920 shares being awarded to the reporting person. All of the shares fully vested on October 25, 2025, pursuant to the grant agreement.