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Who

Kuo Wei Herbert Chang

Director

Company insider

Files Form 4 as: Director and 10% owner, Monolithic Power Systems; Director, Marvell Technology Group.

In numbers

Trades disclosed
242
Buys
0
Sells
126
Bought
$0
Sold
$63.7M
Companies
2
Companies where not an officer
2
First trade
19 Jan 2006
Last trade
24 Aug 2026
Last filed
25 Aug 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
MPWR Monolithic Power SystemsDirector, 10% owner · Semiconductors · last 24 Aug 20260 buys · 119 sells
Marvell Technology GroupDirector · last 29 Mar 20110 buys · 7 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
30Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
24 Aug 2026filed 25 Aug 2026MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$64K50 at $1,281.57filing
24 Aug 2026filed 25 Aug 2026MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$64K50 at $1,281.57filing
11 Aug 2026filed 13 Aug 2026MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$71K50 at $1,420.00filing
11 Aug 2026filed 13 Aug 2026MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$71K50 at $1,420.00filing
3 Feb 2026filed 5 Feb 2026MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Code A—189 at $0.00filing
3 Feb 2026filed 5 Feb 2026MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Code A—189 at $0.00filing
25 Nov 2025filed 25 Nov 2025MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$90K100 at $896.97filing
21 Nov 2025filed 24 Nov 2025MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$87K100 at $873.97filing
13 May 2025filed 13 May 2025MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$37K50 at $738.00filing
12 May 2025filed 12 May 2025MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$70K100 at $698.00filing
8 May 2025filed 9 May 2025MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$65K100 at $650.00filing
4 Feb 2025filed 6 Feb 2025MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Code A—335 at $0.00filing
15 Aug 2024filed 15 Aug 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$89K100 at $888.88filing
15 Aug 2024filed 15 Aug 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$90K100 at $898.00filing
20 May 2024filed 22 May 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$150K200 at $750.00filing
15 May 2024filed 15 May 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$73K100 at $730.00filing
15 May 2024filed 15 May 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$74K100 at $740.00filing
29 Feb 2024filed 29 Feb 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$177K250 at $706.34filing
22 Feb 2024filed 23 Feb 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Sold$188K250 at $750.00filing
6 Feb 2024filed 8 Feb 2024MPWR Monolithic Power SystemsSemiconductorsSEC FORM 4 Code A—348 at $0.00filing

Sectors

Technology119
Not placed7

Buys in green, sells in red, by the company’s sector.

Related people

Michael HsingCEO · CEO at Monolithic Power Systems, filing Form 4 there in the last year
Saria TsengEVP & General Counsel · EVP & General Counsel at Monolithic Power Systems, filing Form 4 there in the last year
Robert W. Dean IIInterim CFO · Interim CFO at Monolithic Power Systems, filing Form 4 there in the last year
Maurice SciammasEVP, WW Sales & Marketing · EVP, WW Sales & Marketing at Monolithic Power Systems, filing Form 4 there in the last year
Jeff ZhouDirector · Director at Monolithic Power Systems, filing Form 4 there in the last year
Ro KhannaRepresentative, CA-17 · Also traded MPWR in the last 90 days