Company Insider Tape

Monolithic Power Systems, Inc. insider transactions

Executive and director filing history, acquisition and disposal balance, executive concentration, cadence, and stored market context.

Symbol MPWR Latest filing 15 Jul 2026

Company Read

Net disposal

MPWR has 103 stored insider filings. Acquisitions account for 1.0% of classified filings and disposals account for 99.0%. The largest stored filing is $23.4M from XIAO, DEMING.

Latest filing 15 Jul 2026most recent stored row
Largest filing $23.4Mreported transaction value
Total filings 103stored transaction rows
Acquisition value $01 acquisitions
Disposal value $240.5M102 disposals
Net value $-240.5Macquisitions minus disposals

Filing cadence

Last 12 active months
Mar 2026 9
Apr 2026 24
May 2026 50
Jun 2026 1
Jul 2026 19

Acquisitions 1.0% · Disposals 99.0%

Mar 2026 $26.0M
Apr 2026 $22.2M
May 2026 $172.0M
Jun 2026 $46.0K
Jul 2026 $20.3M

Executive concentration

By filing count
SCIAMMAS, MAURICE EVP, WW Sales & Marketing · 35 filings
TSENG, SARIA EVP & General Counsel · 34 filings
HSING, MICHAEL Director, CEO · 13 filings
ELMIGER, EUGEN J Director · 9 filings
XIAO, DEMING EVP, Global Operations · 4 filings
ZHOU, JEFF Director · 4 filings
DEAN, ROBERT W II Interim CFO · 3 filings
WYNNE, EILEEN Director · 1 filings

Market Context

MPWR weekly market snapshot

Week 31 Jul 2026
Latest close 25105.00 MXNstored weekly close
1-week move +9.4%latest weekly bar
13-week move +8.4%medium-term context
Relative Strength 22.4Sharemaestro indicator
Fair value gap +68.5%price vs fair value
Trend signal 1smoothed trend state

Transaction History

Latest insider filings for MPWR

Showing 61-90 of 103
Date 6 May 2026
Insider ELMIGER, EUGEN JDirector
Side Disposal
Shares 834
Price 1575.57
Value 1314025
Security Common Stock
Date 6 May 2026
Insider ELMIGER, EUGEN JDirector
Side Disposal
Shares 814
Price 1566.36
Value 1275017
Security Common Stock
Date 6 May 2026
Insider ZHOU, JEFFDirector
Side Disposal
Shares 500
Price 1650.00
Value 825000
Security Common Stock
Date 6 May 2026
Insider ELMIGER, EUGEN JDirector
Side Disposal
Shares 514
Price 1600.14
Value 822472
Security Common Stock
Date 6 May 2026
Insider WYNNE, EILEENDirector
Side Disposal
Shares 335
Price 1582.68
Value 530198
Security Common Stock
Date 6 May 2026
Insider ELMIGER, EUGEN JDirector
Side Disposal
Shares 320
Price 1559.88
Value 499162
Security Common Stock
Date 5 May 2026
Insider ZHOU, JEFFDirector
Side Disposal
Shares 514
Price 1574.48
Value 809283
Security Common Stock
Date 5 May 2026
Insider ZHOU, JEFFDirector
Side Disposal
Shares 500
Price 1600.00
Value 800000
Security Common Stock
Date 5 May 2026
Insider SCIAMMAS, MAURICEEVP, WW Sales & Marketing
Side Disposal
Shares 380
Price 1583.81
Value 601848
Security Common Stock
Date 4 May 2026
Insider SCIAMMAS, MAURICEEVP, WW Sales & Marketing
Side Disposal
Shares 30
Price 1588.73
Value 47662
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 4244
Price 1312.82
Value 5571608
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 1279
Price 1308.30
Value 1673316
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 840
Price 1319.25
Value 1108170
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 800
Price 1302.52
Value 1042016
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 560
Price 1266.48
Value 709229
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 400
Price 1292.08
Value 516832
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 360
Price 1270.29
Value 457304
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 240
Price 1279.55
Value 307092
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 120
Price 1321.94
Value 158633
Security Common Stock
Date 8 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 120
Price 1287.12
Value 154454
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 2036
Price 1170.38
Value 2382894
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 1680
Price 1176.35
Value 1976268
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 1396
Price 1179.50
Value 1646582
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 684
Price 1165.66
Value 797311
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 560
Price 1159.62
Value 649387
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 556
Price 1144.42
Value 636298
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 480
Price 1149.05
Value 551544
Security Common Stock
Date 6 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 244
Price 1139.96
Value 278150
Security Common Stock
Date 1 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 576
Price 1131.24
Value 651594
Security Common Stock
Date 1 Apr 2026
Insider TSENG, SARIAEVP & General Counsel
Side Disposal
Shares 292
Price 1136.99
Value 332001
Security Common Stock