Tseng Saria's Form 4 filing
Monolithic Power Systems, Inc. (MPWR) · filed Apr 3, 2026
- Accession no.
- 0001214659-26-004341
- Filed
- Apr 3, 2026
- Trade date
- Apr 1, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 5 non-derivative transactions. Open-market sales total $1.59M. It was filed 2 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Tseng SariaCIK 0001312593 | Officer (EVP & General Counsel) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Apr 1, 2026 | Common Stock | SSaleDisposed | −576 | $1,131.24F2 | −$651,594.24 | 174,406 | Direct | |
| Apr 1, 2026 | Common Stock | SSaleDisposed | −184 | $1,132.15F3 | −$208,315.6 | 174,222 | Direct | |
| Apr 1, 2026 | Common Stock | SSaleDisposed | −160 | $1,134.14F4 | −$181,462.4 | 174,062 | Direct | |
| Apr 1, 2026 | Common Stock | SSaleDisposed | −188 | $1,135.91F5 | −$213,551.08 | 173,874 | Direct | |
| Apr 1, 2026 | Common Stock | SSaleDisposed | −292 | $1,136.99F6 | −$332,001.08 | 173,582 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F2
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,130.82 to $1,131.76. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F3
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,131.84 to $1,132.46. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F4
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,133.77 to $1,134.75. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F5
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,135.41 to $1,136.26. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F6
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,136.47 to $1,137.71. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.