Michael Hsing

CIK: 0001308676

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)97 (96.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (2.0%)

Compensation grants

Other (G, F, J, C, D, …)2 (2.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MPWR

MONOLITHIC POWER SYSTEMS INC

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (101 total)

MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
2.9K shares at avg. $1503.05$4.4M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
4.1K shares at avg. $1476.96$6.0M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
5.8K shares at avg. $1467.62$8.5M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
551 shares at avg. $1513.11$834K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
608 shares at avg. $1499.46$912K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
5.7K shares at avg. $1482.51$8.5M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
352 shares at avg. $1518.15$534K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
5K shares at avg. $1472.84$7.4M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
3.4K shares at avg. $1462.61$5.0M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
3.8K shares at avg. $1507.70$5.7M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
6.7K shares at avg. $1486.76$9.9M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
862 shares at avg. $1491.48$1.3M
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
130 shares at avg. $1521.43$198K
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
3.6K shares at avg. $1205.82$4.4M
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
600 shares at avg. $1194.34$717K
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
12.7K shares at avg. $1155.71$14.7M
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
1.4K shares at avg. $1200.81$1.7M
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
1.2K shares at avg. $1210.11$1.5M
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
200 shares at avg. $1173.39$235K
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
2.1K shares at avg. $1168.80$2.4M
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
480 shares at avg. $1180.79$567K
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
5K shares at avg. $1159.84$5.8M
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
4K shares at avg. $1164.92$4.7M
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
160 shares at avg. $1188.23$190K
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 12, 2026
Sale(S)
Direct
1.4K shares at avg. $1217.12$1.8M

		Type	Shares	Price		Ownership
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	2,929	$1503.05	$4,402,433	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	4,082	$1476.96	$6,028,951	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	5,819	$1467.62	$8,540,081	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	551	$1513.11	$833,724	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	608	$1499.46	$911,672	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	5,737	$1482.51	$8,505,160	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	352	$1518.15	$534,389	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	5,049	$1472.84	$7,436,369	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	3,424	$1462.61	$5,007,977	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	3,769	$1507.70	$5,682,521	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	6,688	$1486.76	$9,943,451	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	862	$1491.48	$1,285,656	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	130	$1521.43	$197,786	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	3,640	$1205.82	$4,389,185	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	600	$1194.34	$716,604	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	12,731	$1155.71	$14,713,344	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	1,440	$1200.81	$1,729,166	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	1,240	$1210.11	$1,500,536	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	200	$1173.39	$234,678	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	2,076	$1168.80	$2,426,429	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	480	$1180.79	$566,779	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	4,992	$1159.84	$5,789,921	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	4,001	$1164.92	$4,660,845	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	160	$1188.23	$190,117	Direct
Feb 12, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	1,440	$1217.12	$1,752,653	Direct

1-25 of 101 transactions

About Hsing Michael

Hsing Michael (SEC CIK 0001308676) files insider reports with the SEC as CEO of MONOLITHIC POWER SYSTEMS INC (MPWR).

Signal8 holds 17 ownership filings by Hsing Michael, all Form 4s, filed between Nov 13, 2024 and May 20, 2026. Those filings report 101 transactions, from Nov 8, 2024 to May 18, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Hsing Michael's filings is in WEST PALM BEACH, FL.

Recent filings by Hsing Michael

May 18, 2026: Open-market sales of MPWR shares (13 lines, Form 4, code S).
Feb 12, 2026: Open-market sales of MPWR shares (12 lines, Form 4, code S).

Other insiders filing for MONOLITHIC POWER SYSTEMS INC (MPWR)

Balow Frank Anthony III, Chief Financial Officer
Tseng Saria, EVP & General Counsel
DEAN ROBERT W II, Interim CFO
CHANG KUO WEI HERBERT, Director
Sciammas Maurice, EVP, WW Sales & Marketing
Zhou Jeff, Director

How to read Form 4 transaction codes