Robert W. Dean II

CIK: 0001445300

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)5 (62.5%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)1 (12.5%)

Compensation grants

Other (G, F, J, C, D, …)2 (25.0%)

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

Companies & Roles (1)

MPWR

MONOLITHIC POWER SYSTEMS, INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (8 total)

MPWR
MONOLITHIC POWER SYSTEMS, INC.
Aug 24, 2026
Other(J)
Direct
5 shares-
MPWR
MONOLITHIC POWER SYSTEMS, INC.
Aug 24, 2026
Sale(S)
Direct
32 shares at avg. $1297.72$42K
MPWR
MONOLITHIC POWER SYSTEMS, INC.
Aug 17, 2026
Sale(S)
Direct
6 shares at avg. $1413.64$8K
MPWR
MONOLITHIC POWER SYSTEMS, INC.
Aug 5, 2026
Sale(S)
Direct
105 shares at avg. $1344.27$141K
MPWR
MONOLITHIC POWER SYSTEMS, INC.
Jul 25, 2026
Award(A)
Direct
1.4K shares-
MPWR
MONOLITHIC POWER SYSTEMS INC
May 26, 2026
Sale(S)
Direct
22 shares at avg. $1649.56$36K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 18, 2026
Sale(S)
Direct
4 shares at avg. $1563.28$6K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 13, 2026
Other(J)
Direct
2.2K shares-

		Type	Shares	Price		Ownership
Aug 24, 2026	MPWR MONOLITHIC POWER SYSTEMS, INC.	Other(J)	5	-	$0	Direct
Aug 24, 2026	MPWR MONOLITHIC POWER SYSTEMS, INC.	Sale(S)	32	$1297.72	$41,527	Direct
Aug 17, 2026	MPWR MONOLITHIC POWER SYSTEMS, INC.	Sale(S)	6	$1413.64	$8,482	Direct
Aug 5, 2026	MPWR MONOLITHIC POWER SYSTEMS, INC.	Sale(S)	105	$1344.27	$141,148	Direct
Jul 25, 2026	MPWR MONOLITHIC POWER SYSTEMS, INC.	Award(A)	1,359	-	$0	Direct
May 26, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	22	$1649.56	$36,290	Direct
May 18, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	4	$1563.28	$6,253	Direct
May 13, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Other(J)	2,156	-	$0	Direct

1-8 of 8 transactions

About DEAN ROBERT W II

DEAN ROBERT W II (SEC CIK 0001445300) files insider reports with the SEC as Interim CFO of MONOLITHIC POWER SYSTEMS, INC. (MPWR).

Signal8 holds 8 ownership filings by DEAN ROBERT W II (1 Form 3, 7 Form 4), filed between Mar 9, 2026 and Aug 26, 2026. Those filings report 8 transactions, from May 13, 2026 to Aug 24, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on DEAN ROBERT W II's filings is in WEST PALM BEACH, FL.

Recent filings by DEAN ROBERT W II

Aug 24, 2026: Other transaction of MPWR shares (Form 4, code J).
Aug 24, 2026: Open-market sale of MPWR shares (Form 4, code S).
Aug 17, 2026: Open-market sale of MPWR shares (Form 4, code S).
Aug 5, 2026: Open-market sale of MPWR shares (Form 4, code S).
Jul 25, 2026: Grant or award of MPWR shares (Form 4, code A).

Other insiders filing for MONOLITHIC POWER SYSTEMS, INC. (MPWR)

Balow Frank Anthony III, Chief Financial Officer
Tseng Saria, EVP & General Counsel
CHANG KUO WEI HERBERT, Director
Sciammas Maurice, EVP, WW Sales & Marketing
Zhou Jeff, Director
Hsing Michael, CEO

How to read Form 4 transaction codes