MPWR insider trading: MONOLITHIC POWER SYSTEMS, INC. insider buys & sells · Whale Atlas

MPWR

Nasdaq

MONOLITHIC POWER SYSTEMS, INC.

Latest disclosureSeptember 30, 2026

Insider score Why 0?: 0/ 100
Qualifying buys · 30d: $0

0 purchases · 111 sales

Price by TradingView

Insider transactions 122

Limited filing history

Filters

Last 30 daysNo qualifying insider buying. Sales: $40.35M by 1 insider.

Showing the first 6 of 111 trades on this page.

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $788.69K
Reported price: $1,323.31 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value

Why this buying score?

No qualifying common-equity purchases

No eligible common-equity purchase is public by this cutoff within 180 transaction-date days. Other instruments, exercises and routine activity do not contribute purchase points.

+0 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0001280452
Latest public acceptance: Sep 30, 2026, 09:21 PM UTC
Score calculated: Oct 8, 2026, 12:06 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.

Insider activity can have many explanations. Signal Strength is not a probability of profit or a recommendation to trade.

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $14.82M
Reported price: $1,351.43 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $176.4K
Reported price: $1,356.94 / share

Sale disclosed

Robert W. Dean II

Interim CFO

Common Stock

Reported value: $41.53K
Reported price: $1,297.72 / share

Sale disclosed

Kuo Wei Herbert Chang

Director

Common Stock

Reported value: $64.08K
Reported price: $1,281.57 / share

Sale disclosed

Robert W. Dean II

Interim CFO

Common Stock

Reported value: $8.48K
Reported price: $1,413.64 / share

Sale disclosed

Kuo Wei Herbert Chang

Director

Common Stock

Reported value: $71K
Reported price: $1,420.00 / share

Sale disclosed

Robert W. Dean II

Interim CFO

Common Stock

Reported value: $141.15K
Reported price: $1,344.27 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $40.32K
Reported price: $1,343.94 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $692.49K
Reported price: $1,314.03 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $361.25K
Reported price: $1,318.42 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $541.49K
Reported price: $1,323.93 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $616.8K
Reported price: $1,329.30 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $1.04M
Reported price: $1,334.59 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $1.96M
Reported price: $1,339.59 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $2.51M
Reported price: $1,344.16 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $2.03M
Reported price: $1,348.91 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $7.63M
Reported price: $1,352.95 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $67.97K
Reported price: $1,359.36 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $328.6K
Reported price: $1,369.18 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $649.22K
Reported price: $1,375.47 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $576.31K
Reported price: $1,378.73 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $567.49K
Reported price: $1,384.11 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $69.41K
Reported price: $1,388.19 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $297.38K
Reported price: $1,396.16 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $163.85K
Reported price: $1,400.45 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $154.63K
Reported price: $1,405.71 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $40.55K
Reported price: $1,351.61 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $46.02K
Reported price: $1,533.95 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $12.86M
Reported price: $1,700.00 / share

Sale disclosed

Robert W. Dean II

Interim CFO

Common Stock

Reported value: $36.29K
Reported price: $1,649.56 / share

Sale disclosed

Jeff Zhou

Director

Common Stock

Reported value: $816.48K
Reported price: $1,680.00 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $7.93M
Reported price: $1,586.43 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $5.01M
Reported price: $1,462.61 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $8.54M
Reported price: $1,467.62 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $7.44M
Reported price: $1,472.84 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $6.03M
Reported price: $1,476.96 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $8.51M
Reported price: $1,482.51 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $9.94M
Reported price: $1,486.76 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $1.29M
Reported price: $1,491.48 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $911.67K
Reported price: $1,499.46 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $4.4M
Reported price: $1,503.05 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $5.68M
Reported price: $1,507.70 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $833.72K
Reported price: $1,513.11 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $534.39K
Reported price: $1,518.15 / share

Sale disclosed

Michael Hsing

CEO

Common Stock

Reported value: $197.79K
Reported price: $1,521.43 / share

Sale disclosed

Robert W. Dean II

Interim CFO

Common Stock

Reported value: $6.25K
Reported price: $1,563.28 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $5.8M
Reported price: $1,550.36 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $2.67M
Reported price: $1,557.48 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $3.14M
Reported price: $1,562.01 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $3.17M
Reported price: $1,567.15 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $2.06M
Reported price: $1,571.49 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $1.11M
Reported price: $1,577.75 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $707.25K
Reported price: $1,582.21 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $79.28K
Reported price: $1,585.51 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $499.16K
Reported price: $1,559.88 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $1.28M
Reported price: $1,566.36 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $1.69M
Reported price: $1,571.58 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $1.31M
Reported price: $1,575.57 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $2.97M
Reported price: $1,581.81 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $4.11M
Reported price: $1,586.81 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $2.16M
Reported price: $1,591.38 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $4.18M
Reported price: $1,596.42 / share

Sale disclosed

Eugen J. Elmiger

Director

Common Stock

Reported value: $822.47K
Reported price: $1,600.14 / share

Sale disclosed

Deming Xiao

EVP, Global Operations

Common Stock

Reported value: $5.49M
Reported price: $1,648.38 / share

Sale disclosed

Deming Xiao

EVP, Global Operations

Common Stock

Reported value: $23.42M
Reported price: $1,652.80 / share

Sale disclosed

Deming Xiao

EVP, Global Operations

Common Stock

Reported value: $19.23M
Reported price: $1,657.93 / share

Sale disclosed

Deming Xiao

EVP, Global Operations

Common Stock

Reported value: $1.51M
Reported price: $1,661.38 / share

Sale disclosed

Eileen Wynne

Director

Common Stock

Reported value: $530.2K
Reported price: $1,582.68 / share

Sale disclosed

Jeff Zhou

Director

Common Stock

Reported value: $809.28K
Reported price: $1,574.48 / share

Sale disclosed

Jeff Zhou

Director

Common Stock

Reported value: $800K
Reported price: $1,600.00 / share

Sale disclosed

Jeff Zhou

Director

Common Stock

Reported value: $825K
Reported price: $1,650.00 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $601.85K
Reported price: $1,583.81 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $47.66K
Reported price: $1,588.73 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $709.23K
Reported price: $1,266.48 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $457.3K
Reported price: $1,270.29 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $307.09K
Reported price: $1,279.55 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $154.45K
Reported price: $1,287.12 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $516.83K
Reported price: $1,292.08 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $1.04M
Reported price: $1,302.52 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $1.67M
Reported price: $1,308.30 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $5.57M
Reported price: $1,312.82 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $1.11M
Reported price: $1,319.25 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $158.63K
Reported price: $1,321.94 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $278.15K
Reported price: $1,139.96 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $636.3K
Reported price: $1,144.42 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $551.54K
Reported price: $1,149.05 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $649.39K
Reported price: $1,159.62 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $797.31K
Reported price: $1,165.66 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $2.38M
Reported price: $1,170.38 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $1.98M
Reported price: $1,176.35 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $1.65M
Reported price: $1,179.50 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $651.59K
Reported price: $1,131.24 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $208.32K
Reported price: $1,132.15 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $181.46K
Reported price: $1,134.14 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $213.55K
Reported price: $1,135.91 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $332K
Reported price: $1,136.99 / share

Sale disclosed

Maurice Sciammas

EVP, WW Sales & Marketing

Common Stock

Reported value: $33.49K
Reported price: $1,116.44 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $5.16M
Reported price: $1,000.81 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $9.13M
Reported price: $1,005.18 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $3.39M
Reported price: $1,009.63 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $3.25M
Reported price: $1,017.22 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $2.25M
Reported price: $1,023.00 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $2.51M
Reported price: $1,029.21 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $171.91K
Reported price: $1,035.60 / share

Sale disclosed

Saria Tseng

EVP & General Counsel

Common Stock

Reported value: $83.29K
Reported price: $1,041.12 / share

Reporting insider	Security / transaction	Amount / price	Value	Traded / disclosed	Source
CEO	Common StockSale10b5-18 trades	30,000avg $1,344.97 / share	$40.35M	Sep 28Filed Sep 30 · 2d later	8 filings 596 @ $1,323.31 · $788.69KSEC filing 2,121 @ $1,328.54 · $2.82MSEC filing 1,111 @ $1,333.34 · $1.48MSEC filing 2,949 @ $1,338.66 · $3.95MSEC filing 5,783 @ $1,343.76 · $7.77MSEC filing 6,343 @ $1,347.15 · $8.54MSEC filing 10,967 @ $1,351.43 · $14.82MSEC filing 130 @ $1,356.94 · $176.4KSEC filing
Interim CFO	Common StockSale	32$1,297.72 / share	$41.53K	Aug 24Filed Aug 26 · 2d later	SEC filing
Director	Common StockSale	50$1,281.57 / share	$64.08K	Aug 24Filed Aug 25 · 1d later	SEC filing
Interim CFO	Common StockSale	6$1,413.64 / share	$8.48K	Aug 17Filed Aug 19 · 2d later	SEC filing
Director	Common StockSale	50$1,420.00 / share	$71K	Aug 11Filed Aug 13 · 2d later	SEC filing
Interim CFO	Common StockSale	105$1,344.27 / share	$141.15K	Aug 5Filed Aug 6 · 1d later	SEC filing
EVP, WW Sales & Marketing	Common StockSale10b5-1	30$1,343.94 / share	$40.32K	Aug 3Filed Aug 5 · 2d later	SEC filing
EVP, WW Sales & Marketing	Common StockSale10b5-118 trades	15,000avg $1,349.73 / share	$20.25M	Jul 15Filed Jul 17 · 2d later	18 filings 527 @ $1,314.03 · $692.49KSEC filing 274 @ $1,318.42 · $361.25KSEC filing 409 @ $1,323.93 · $541.49KSEC filing 464 @ $1,329.30 · $616.8KSEC filing
EVP, WW Sales & Marketing	Common StockSale10b5-1	30$1,351.61 / share	$40.55K	Jul 1Filed Jul 6 · 5d later	SEC filing
EVP, WW Sales & Marketing	Common StockSale10b5-1	30$1,533.95 / share	$46.02K	Jun 1Filed Jun 3 · 2d later	SEC filing
EVP & General Counsel	Common StockSale	7,565$1,700.00 / share	$12.86M	May 27Filed May 29 · 2d later	SEC filing
Interim CFO	Common StockSale	22$1,649.56 / share	$36.29K	May 26Filed May 28 · 2d later	SEC filing
Director	Common StockSale	486$1,680.00 / share	$816.48K	May 26Filed May 27 · 1d later	SEC filing
EVP & General Counsel	Common StockSale	5,000$1,586.43 / share	$7.93M	May 22Filed May 27 · 5d later	SEC filing
CEO	Common StockSale13 trades	40,000avg $1,482.75 / share	$59.31M	May 18Filed May 20 · 2d later	13 filings 3,424 @ $1,462.61 · $5.01MSEC filing 5,819 @ $1,467.62 · $8.54MSEC filing 5,049 @ $1,472.84 · $7.44MSEC filing 4,082 @ $1,476.96 · $6.03MSEC filing
Interim CFO	Common StockSale	4$1,563.28 / share	$6.25K	May 18Filed May 20 · 2d later	SEC filing
EVP, WW Sales & Marketing	Common StockSale10b5-18 trades	12,000avg $1,561.40 / share	$18.74M	May 15Filed May 19 · 4d later	8 filings 3,741 @ $1,550.36 · $5.8MSEC filing 1,717 @ $1,557.48 · $2.67MSEC filing 2,010 @ $1,562.01 · $3.14MSEC filing 2,020 @ $1,567.15 · $3.17MSEC filing
Director	Common StockSale9 trades	12,000avg $1,584.96 / share	$19.02M	May 6Filed May 8 · 2d later	9 filings 320 @ $1,559.88 · $499.16KSEC filing 814 @ $1,566.36 · $1.28MSEC filing 1,078 @ $1,571.58 · $1.69MSEC filing 834 @ $1,575.57 · $1.31MSEC filing
EVP, Global Operations	Common StockSale4 trades	30,000avg $1,654.55 / share	$49.64M	May 6Filed May 8 · 2d later	4 filings 3,329 @ $1,648.38 · $5.49MSEC filing 14,167 @ $1,652.80 · $23.42MSEC filing 11,597 @ $1,657.93 · $19.23MSEC filing 907 @ $1,661.38 · $1.51MSEC filing
Director	Common StockSale	335$1,582.68 / share	$530.2K	May 6Filed May 8 · 2d later	SEC filing
Director	Common StockSale2 trades	1,014avg $1,587.06 / share	$1.61M	May 5Filed May 6 · 1d later	2 filings 514 @ $1,574.48 · $809.28KSEC filing 500 @ $1,600.00 · $800KSEC filing
Director	Common StockSale	500$1,650.00 / share	$825K	May 6Filed May 6 · 0d later	SEC filing
EVP, WW Sales & Marketing	Common StockSale	380$1,583.81 / share	$601.85K	May 5Filed May 6 · 1d later	SEC filing
EVP, WW Sales & Marketing	Common StockSale10b5-1	30$1,588.73 / share	$47.66K	May 4Filed May 6 · 2d later	SEC filing
EVP & General Counsel	Common StockSale10b5-110 trades	8,963avg $1,305.22 / share	$11.7M	Apr 8Filed Apr 10 · 2d later	10 filings 560 @ $1,266.48 · $709.23KSEC filing 360 @ $1,270.29 · $457.3KSEC filing 240 @ $1,279.55 · $307.09KSEC filing 120 @ $1,287.12 · $154.45KSEC filing
EVP & General Counsel	Common StockSale10b5-18 trades	7,636avg $1,167.95 / share	$8.92M	Apr 6Filed Apr 8 · 2d later	8 filings 244 @ $1,139.96 · $278.15KSEC filing 556 @ $1,144.42 · $636.3KSEC filing 480 @ $1,149.05 · $551.54KSEC filing 560 @ $1,159.62 · $649.39KSEC filing
EVP & General Counsel	Common StockSale10b5-15 trades	1,400avg $1,133.52 / share	$1.59M	Apr 1Filed Apr 3 · 2d later	5 filings 576 @ $1,131.24 · $651.59KSEC filing 184 @ $1,132.15 · $208.32KSEC filing 160 @ $1,134.14 · $181.46KSEC filing 188 @ $1,135.91 · $213.55KSEC filing
EVP, WW Sales & Marketing	Common StockSale10b5-1	30$1,116.44 / share	$33.49K	Apr 1Filed Apr 3 · 2d later	SEC filing
EVP & General Counsel	Common StockSale10b5-18 trades	25,674avg $1,010.50 / share	$25.94M	Mar 30Filed Apr 1 · 2d later	8 filings 5,154 @ $1,000.81 · $5.16MSEC filing 9,080 @ $1,005.18 · $9.13MSEC filing 3,360 @ $1,009.63 · $3.39MSEC filing 3,194 @ $1,017.22 · $3.25MSEC filing

Congress transactions 7

All Congress filings

Full sale disclosedAmended report

Monolithic Power Systems, Inc. - Common Stock · Stock

The filing reports a full sale for a joint account.

Thomas H TubervilleReporting Senate member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: May 3, 2024

Partial sale disclosed

Monolithic Power Systems, Inc. - Common Stock (MPWR) · Stock

The filing reports a partial sale for a spouse.

Byron DonaldsReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: June 5, 2026

Partial sale disclosed

Monolithic Power Systems, Inc. - Common Stock (MPWR) · Stock

The filing reports a partial sale for the member.

Byron DonaldsReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: June 5, 2026

Purchase disclosed

Monolithic Power Systems, Inc. - Common Stock · Stock

The filing reports a purchase for a joint account.

Markwayne MullinReporting Senate member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: February 4, 2026

Purchase disclosed

Monolithic Power Systems, Inc. - Common Stock · Stock

The filing reports a purchase for a spouse.

Markwayne MullinReporting Senate member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: January 5, 2026

Purchase disclosed

Monolithic Power Systems, Inc. - Common Stock · Stock

The filing reports a purchase for the member.

Markwayne MullinReporting Senate member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: January 5, 2026

Purchase disclosed

Monolithic Power Systems, Inc. - Common Stock (MPWR) · Stock

The filing reports a purchase for a dependent.

Michael Patrick GuestReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: October 20, 2025