Monolithic Power Systems Inc.
Organization details
- Legal name
- Monolithic Power Systems Inc.
- Ownership
- Public
- Status
- Active
- Sector (GICS)
- Information Technology
- SIC code
- 3674 — Semiconductors & Related Devices
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- West Palm Beach
- Headquarters state / province
- Florida
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- MPWR
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001280452
- EIN
- 77-0466789
- Wikidata ID
- Q22058448
Board of directors
-
Carintia Martinez · DirectorSince 2023
-
Eileen Wynne · DirectorSince 2023
-
Eugen J. Elmiger · DirectorSince 2023
-
James C. Moyer · DirectorSince 2023
-
Jeff Zhou · DirectorSince 2023
-
Kuo Wei Herbert Chang · DirectorSince 2023
-
Michael Hsing · Director · CEOSince 2023
-
Victor K. Lee · DirectorSince 2023
Chief executives
Director election results
Annual meeting of June 11, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
89.9%
-
94.1%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $650,432,654
- 255 sales by 12 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Nov 11, 2026 | Balow Frank Anthony III Officer (Chief Financial Officer) | Open-market sale | −20 | $1,434.31 | $28,686 |
| Nov 3, 2026 | Sciammas Maurice Officer (EVP, WW Sales & Marketing) | Gift | −13,000 | — | — |
| Nov 3, 2026 | Sciammas Maurice Officer (EVP, WW Sales & Marketing) | Gift | +13,000 | — | — |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −596 | $1,323.31 | $788,693 |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −2,121 | $1,328.54 | $2,817,833 |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −1,111 | $1,333.34 | $1,481,341 |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −2,949 | $1,338.66 | $3,947,708 |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −5,783 | $1,343.76 | $7,770,964 |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −6,343 | $1,347.15 | $8,544,972 |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −10,967 | $1,351.43 | $14,821,133 |
| Sep 28, 2026 | Michael Hsing Director, Officer (CEO) | Open-market sale | −130 | $1,356.94 | $176,402 |
| Aug 31, 2026 | Tseng Saria Officer (EVP & General Counsel) | Gift | −2,000 | — | — |
| Aug 31, 2026 | Tseng Saria Officer (EVP & General Counsel) | Gift | +2,000 | — | — |
| Aug 24, 2026 | Kuo Wei Herbert Chang Director | Open-market sale | −50 | $1,281.57 | $64,079 |
| Aug 24, 2026 | DEAN ROBERT W II Officer (Interim CFO) | Open-market sale | −32 | $1,297.72 | $41,527 |
Peers
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Questions about Monolithic Power Systems Inc.
Who is the CEO of Monolithic Power Systems Inc.?
Michael Hsing is Monolithic Power Systems Inc.'s CEO.
How many directors are on Monolithic Power Systems Inc.'s board?
Monolithic Power Systems Inc.'s board has 8 directors: Carintia Martinez, Eileen Wynne, Eugen J. Elmiger, James C. Moyer, Jeff Zhou, Kuo Wei Herbert Chang, Michael Hsing and Victor K. Lee.
Are Monolithic Power Systems Inc. insiders buying or selling shares?
Over the last 12 months, Monolithic Power Systems Inc. insiders made no open-market purchases and sold $650.4 million of shares in 255 sales on the open market, as reported to the SEC on Forms 4 and 5.
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