SEC Form 4 reporting owner

Tseng Saria

Tseng Saria has filed 64 Form 4 transactions reported between November 25, 2025 and August 31, 2026, as EVP & General Counsel of MONOLITHIC POWER SYSTEMS, INC..

Name as filed: Tseng Saria

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$132.0M

60 lines

Companies

with Form 4 filings

Latest transaction

Aug 31, 2026

transaction date

Roles and reported holdings

MPWRMONOLITHIC POWER SYSTEMS, INC.
Nov 25, 2025 – Aug 31, 2026
EVP & General Counsel
Held directly142,218 sh as of Aug 31, 2026 · Form 4
24 months: $132.0M sold

Transaction history

All 64 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Aug 31, 2026	MPWREVP & General Counsel	GiftCode G · direct	2,000	—	—	142,218	Form 4
May 27, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	7,565	$1700.00	$12.9M@ $1700.00	144,218	Form 4
May 22, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	5,000	$1586.43	$7.9M@ $1586.43	151,783	Form 4
May 22, 2026	MPWREVP & General Counsel	GiftCode G · direct	200	—	—	156,783	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	840	$1319.25	$1.1M@ $1319.25	157,103	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	4,244	$1312.82	$5.6M@ $1312.82	157,943	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	1,279	$1308.30	$1.7M@ $1308.30	162,187	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	800	$1302.52	$1.0M@ $1302.52	163,466	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	400	$1292.08	$517K@ $1292.08	164,266	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	120	$1287.12	$154K@ $1287.12	164,666	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	240	$1279.55	$307K@ $1279.55	164,786	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	360	$1270.29	$457K@ $1270.29	165,026	Form 4
Apr 8, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	560	$1266.48	$709K@ $1266.48	165,386	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	1,396	$1179.50	$1.6M@ $1179.50	165,946	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	1,680	$1176.35	$2.0M@ $1176.35	167,342	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	2,036	$1170.38	$2.4M@ $1170.38	169,022	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	684	$1165.66	$797K@ $1165.66	171,058	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	560	$1159.62	$649K@ $1159.62	171,742	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	480	$1149.05	$552K@ $1149.05	172,302	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	556	$1144.42	$636K@ $1144.42	172,782	Form 4
Apr 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	244	$1139.96	$278K@ $1139.96	173,338	Form 4
Apr 1, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	292	$1136.99	$332K@ $1136.99	173,582	Form 4
Apr 1, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	188	$1135.91	$214K@ $1135.91	173,874	Form 4
Apr 1, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	160	$1134.14	$181K@ $1134.14	174,062	Form 4
Apr 1, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	184	$1132.15	$208K@ $1132.15	174,222	Form 4
Apr 1, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	576	$1131.24	$652K@ $1131.24	174,406	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	80	$1041.12	$83K@ $1041.12	174,982	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	166	$1035.60	$172K@ $1035.60	175,062	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	2,440	$1029.21	$2.5M@ $1029.21	175,228	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	2,200	$1023.00	$2.3M@ $1023.00	177,668	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	3,194	$1017.22	$3.2M@ $1017.22	179,868	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	3,360	$1009.63	$3.4M@ $1009.63	183,062	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	9,080	$1005.18	$9.1M@ $1005.18	186,422	Form 4
Mar 30, 2026	MPWREVP & General Counsel	Open-market saleCode S · direct	5,154	$1000.81	$5.2M@ $1000.81	195,502	Form 4
Feb 6, 2026	MPWREVP & General Counsel	Open-market saleCode S · directAlso reported by Xiao Deming, Sciammas Maurice	22,875	$1171.16	$26.8M@ $1171.16	200,626	Form 4
Feb 3, 2026	MPWREVP & General Counsel	Grant or awardCode A · direct	57,170	—	—	223,501	Form 4
Dec 24, 2025	MPWREVP & General Counsel	GiftCode G · direct	1,000	—	—	166,331	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	680	$930.48	$633K@ $930.48	167,331	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	2,238	$929.29	$2.1M@ $929.29	168,011	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	984	$928.60	$914K@ $928.60	170,249	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	1,845	$927.41	$1.7M@ $927.41	171,233	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	10,360	$926.02	$9.6M@ $926.02	173,078	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	1,126	$925.55	$1.0M@ $925.55	183,438	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	1,327	$924.32	$1.2M@ $924.32	184,564	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	1,200	$923.54	$1.1M@ $923.54	185,891	Form 4
Nov 26, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	240	$922.78	$221K@ $922.78	187,091	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	240	$912.30	$219K@ $912.30	187,331	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	324	$911.92	$295K@ $911.92	187,571	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	359	$910.42	$327K@ $910.42	187,895	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	556	$909.35	$506K@ $909.35	188,254	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	888	$908.49	$807K@ $908.49	188,810	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	10,200	$907.21	$9.3M@ $907.21	189,698	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	272	$906.33	$247K@ $906.33	199,898	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	200	$904.39	$181K@ $904.39	200,330	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	160	$903.54	$145K@ $903.54	200,530	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	120	$902.07	$108K@ $902.07	200,690	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	880	$901.58	$793K@ $901.58	200,810	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	346	$900.41	$312K@ $900.41	201,690	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	320	$899.37	$288K@ $899.37	202,036	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	145	$898.38	$130K@ $898.38	202,356	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	754	$897.54	$677K@ $897.54	202,501	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	2,066	$896.37	$1.9M@ $896.37	203,255	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	1,625	$895.63	$1.5M@ $895.63	205,321	Form 4
Nov 25, 2025	MPWREVP & General Counsel	Open-market saleCode S · direct	385	$894.54	$344K@ $894.54	206,946	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.