Jeff Zhou

CIK: 0001480772

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)7 (77.8%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (22.2%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (1)

MPWR

MONOLITHIC POWER SYSTEMS INC

Director

Discretionary Trading P&L

Holdings

Transaction History (9 total)

MPWR
MONOLITHIC POWER SYSTEMS INC
May 26, 2026
Sale(S)
Direct
486 shares at avg. $1680.00$816K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 6, 2026
Sale(S)
Direct
500 shares at avg. $1650.00$825K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 5, 2026
Sale(S)
Direct
500 shares at avg. $1600.00$800K
MPWR
MONOLITHIC POWER SYSTEMS INC
May 5, 2026
Sale(S)
Direct
514 shares at avg. $1574.48$809K
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 3, 2026
Award(A)
Direct
189 shares-
MPWR
MONOLITHIC POWER SYSTEMS INC
Aug 27, 2025
Sale(S)
Direct
193 shares at avg. $870.00$168K
MPWR
MONOLITHIC POWER SYSTEMS INC
Aug 13, 2025
Sale(S)
Direct
400 shares at avg. $850.00$340K
MPWR
MONOLITHIC POWER SYSTEMS INC
Aug 12, 2025
Sale(S)
Direct
200 shares at avg. $830.00$166K
MPWR
MONOLITHIC POWER SYSTEMS INC
Feb 4, 2025
Award(A)
Direct
335 shares-

		Type	Shares	Price		Ownership
May 26, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	486	$1680.00	$816,480	Direct
May 6, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	500	$1650.00	$825,000	Direct
May 5, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	500	$1600.00	$800,000	Direct
May 5, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	514	$1574.48	$809,283	Direct
Feb 3, 2026	MPWR MONOLITHIC POWER SYSTEMS INC	Award(A)	189	-	$0	Direct
Aug 27, 2025	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	193	$870.00	$167,910	Direct
Aug 13, 2025	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	400	$850.00	$340,000	Direct
Aug 12, 2025	MPWR MONOLITHIC POWER SYSTEMS INC	Sale(S)	200	$830.00	$166,000	Direct
Feb 4, 2025	MPWR MONOLITHIC POWER SYSTEMS INC	Award(A)	335	-	-	Direct

1-9 of 9 transactions

About Zhou Jeff

Zhou Jeff (SEC CIK 0001480772) files insider reports with the SEC as Director of MONOLITHIC POWER SYSTEMS INC (MPWR).

Signal8 holds 7 ownership filings by Zhou Jeff, all Form 4s, filed between Feb 6, 2025 and May 27, 2026. Those filings report 9 transactions, from Feb 4, 2025 to May 26, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Zhou Jeff's filings is in WEST PALM BEACH, FL.

Recent filings by Zhou Jeff

May 26, 2026: Open-market sale of MPWR shares (Form 4, code S).
May 6, 2026: Open-market sale of MPWR shares (Form 4, code S).
May 5, 2026: Open-market sales of MPWR shares (2 lines, Form 4, code S).
Feb 3, 2026: Grant or award of MPWR shares (Form 4, code A).
Aug 27, 2025: Open-market sale of MPWR shares (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
Hsing Michael, CEO

How to read Form 4 transaction codes