Maurice Sciammas Insider Trading Activity

Corporate InsiderVP · CIK 1360833

Total trades

$81.1M

Total volume

Jul 1, 2026

Last activity

MPWR

MONOLITHIC POWER SYSTEMS INC

Maurice Sciammas has been net-selling over the last 12 months with 0 purchases and 41 sales across 1 company.

MPWR is the most-traded position with 41 trades. The largest single transaction was a sale of MPWR for $26.8M on Feb 6, 2026.

Performance Scorecard

Forward stock performance after each transaction by Maurice Sciammas. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	—	-7.1%	8%	40
90 days	—	-33.5%	0%	30
120 days	—	-24.8%	0%	29

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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MPWR · MONOLITHIC POWER SYSTEMS INC

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
Jul 1, 2026 Filed 3d late	MPWR	Sell	30	$1351.61	$41K	−2.5%	VP
May 15, 2026	MPWR	Sell	1,312	$1571.49	$2.1M	−0.8%	VP
May 15, 2026	MPWR	Sell	1,717	$1557.48	$2.7M	−1.0%	VP
May 15, 2026	MPWR	Sell	2,010	$1562.01	$3.1M	−1.2%	VP
May 15, 2026	MPWR	Sell	2,020	$1567.15	$3.2M	−1.2%	VP
May 15, 2026	MPWR	Sell	703	$1577.75	$1.1M	−0.4%	VP
May 15, 2026	MPWR	Sell	447	$1582.21	$707K	−0.3%	VP
May 15, 2026	MPWR	Sell	3,741	$1550.36	$5.8M	−2.1%	VP
May 15, 2026	MPWR	Sell	50	$1585.51	$79K	−0.0%	VP
May 5, 2026	MPWR	Sell	380	$1583.81	$602K	−29.3%	VP
May 4, 2026	MPWR	Sell	30	$1588.73	$48K	−2.4%	VP
Apr 1, 2026	MPWR	Sell	30	$1116.44	$33K	−2.4%	VP
Mar 20, 2026	MPWR	Sell	30	$1095.07	$33K	−2.3%	VP
Feb 11, 2026	MPWR	Sell	200	$1179.97	$236K	−13.3%	VP
Feb 6, 2026	MPWR	Sell	22,875	$1171.16	$26.8M	−11.4%	VP
Nov 24, 2025	MPWR	Sell	3,976	$895.23	$3.6M	−2.7%	VP
Nov 19, 2025	MPWR	Sell	1,854	$878.55	$1.6M	−1.1%	VP
Nov 19, 2025	MPWR	Sell	1,966	$879.54	$1.7M	−1.1%	VP
Nov 19, 2025	MPWR	Sell	3,776	$880.58	$3.3M	−2.2%	VP
Nov 19, 2025	MPWR	Sell	2,469	$881.42	$2.2M	−1.5%	VP
Nov 19, 2025	MPWR	Sell	3,344	$882.51	$3.0M	−2.1%	VP
Nov 19, 2025	MPWR	Sell	2,149	$884.44	$1.9M	−1.4%	VP
Nov 19, 2025	MPWR	Sell	1,738	$885.10	$1.5M	−1.2%	VP
Nov 19, 2025	MPWR	Sell	810	$886.01	$718K	−0.5%	VP
Nov 19, 2025	MPWR	Sell	6,513	$883.50	$5.8M	−4.1%	VP
Nov 19, 2025	MPWR	Sell	240	$862.58	$207K	−0.1%	VP
Nov 19, 2025	MPWR	Sell	160	$863.86	$138K	−0.1%	VP
Nov 19, 2025	MPWR	Sell	40	$865.89	$35K	−0.0%	VP
Nov 19, 2025	MPWR	Sell	339	$866.19	$294K	−0.2%	VP
Nov 19, 2025	MPWR	Sell	699	$867.57	$606K	−0.4%	VP
Nov 19, 2025	MPWR	Sell	723	$868.42	$628K	−0.4%	VP
Nov 19, 2025	MPWR	Sell	1,842	$869.39	$1.6M	−1.0%	VP
Nov 19, 2025	MPWR	Sell	320	$870.36	$279K	−0.2%	VP
Nov 19, 2025	MPWR	Sell	220	$871.45	$192K	−0.1%	VP
Nov 19, 2025	MPWR	Sell	574	$872.80	$501K	−0.3%	VP
Nov 19, 2025	MPWR	Sell	1,146	$873.78	$1.0M	−0.6%	VP
Nov 19, 2025	MPWR	Sell	731	$874.50	$639K	−0.4%	VP
Nov 19, 2025	MPWR	Sell	431	$875.26	$377K	−0.2%	VP
Nov 19, 2025	MPWR	Sell	940	$876.62	$824K	−0.5%	VP
Nov 19, 2025	MPWR	Sell	1,976	$877.45	$1.7M	−1.1%	VP
Nov 5, 2025	MPWR	Sell	200	$986.81	$197K	−13.3%	VP