Notice of Proposed Sale · 144
Monolithic Power Systems, Inc.
MPWRNASDAQEQUITYCurrent
Notice of Proposed Sale
Structured filing — 144
primary_doc.xml
Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.
Proposed-sale notice
- Issuer
- MONOLITHIC POWER SYSTEMS, INC.
- Issuer CIK
- 0001280452
- SEC file number
- 000-51026
- Phone
- (561) 839-3999
- Person for whose account securities are to be sold
- MICHAEL HSING
- Relationships to issuer
- Officer · Director
- Street
- 1555 Palm Beach Lakes Blvd.
- City
- West Palm Beach
- State / country code
- FL
- Postal code
- 33401
Securities proposed for sale
| Security | Proposed units | Aggregate market value | Units outstanding | Approximate sale date | Exchange | Broker / market maker |
|---|---|---|---|---|---|---|
| Common | 30,000 | 40,349,049.00 | 49,143,000 | 09/28/2026 | NASDAQ | Morgan Stanley Smith Barney LLC Executive Financial Services |
Broker / market maker — proposed row 1, entry 1
- Name
- Morgan Stanley Smith Barney LLC Executive Financial Services
- Street
- 1 New York Plaza
- Street (continued)
- 8th Floor
- City
- New York
- State / country code
- NY
- Postal code
- 10004
Acquisition of securities to be sold
| Security | Acquired | Nature of acquisition | Acquired from | Amount acquired | Gift transaction | Payment date | Nature of payment |
|---|---|---|---|---|---|---|---|
| Common | 06/30/2023 | Performance Shares | ISSUER | 29,961 | N | 06/30/2023 | Not Applicable |
| Common | 02/15/2023 | Employee Stock Purchase Plan | ISSUER | 39 | N | 02/15/2023 | Cash |
Prior-sale reporting
- Nothing to report for the preceding three months
- Y
Remarks
The securities to be sold were acquired upon the vesting of Performance Shares during the period of 06/30/2023 through 02/07/2025 The securities to be sold were acquired upon the purchase of Employee Stock Purchase Plan shares during the period of 02/15/2023 through 02/17/2025
Notice signature
- Notice date
- 09/28/2026
- Signed
- /s/ Michael Hsing
- Plan adoption dates
- 05/29/2026