Where can I read MPWR's latest 10-K?

MPWR's latest annual report, a 10-K, was filed on Feb 27, 2026 for the fiscal year ended Dec 31, 2025. It is linked above and opens on EDGAR, the SEC's own site, where every exhibit is also listed.

When did MPWR last file an 8-K?

On Sep 10, 2026 it furnished a press release headed “Monolithic Power Systems Announces Third Quarter 2026 Dividend”. An 8-K reports a material event between quarterly reports; the one that furnishes the quarter's results is filed under Item 2.02, last on Jul 30, 2026.

Are MPWR insiders buying or selling?

Over the last 13 months insiders sold $575.6M in 43 sales and bought nothing on the open market; 19 other transactions (awards, exercises, tax withholding, gifts and plan purchases). The most recent sale: Hsing Michael (CEO · Director) sold 30,000 shares on Sep 28, 2026 for $40.3M, under a 10b5-1 plan. Every figure is as the insider filed it on Form 4; a sale under a 10b5-1 plan was scheduled in advance.

How many SEC filings has MPWR made?

2,980 filings are on EDGAR under the registrant records that have been Monolithic Power Systems Inc., going back to 2004; 2,447 of them are insider ownership forms (Forms 3, 4, 5 and 144).

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MPWR SEC filings (2026)

CIK 1280452 · Semiconductors & Related Devices (SIC 3674) · incorporated in DE · fiscal year ends in December

2,980 filings on EDGAR since 2004 · 24 annual, 68 quarterly, 203 current · financial statements · earnings

Latest 10-K

Feb 27, 2026

fiscal year to Dec 31, 2025

Latest 10-Q

Aug 5, 2026

quarter to Jun 30, 2026

Latest 8-K

Sep 10, 2026

Monolithic Power Systems Announces Third Quarter 2026 Dividend

Last earnings release

Jul 30, 2026

$5.41 vs $4.84 · ▲ 8.3%

Filings on file

2,980

since 2004, 2,447 insider forms

What happened, last 12 months#

Every earnings release with its print, every report with its quarter, the other 8-Ks by the headline of the press release they furnish or by their items, the proxy statements, and each day an insider bought or sold — newest first, each line opening the filing on EDGAR. The index by form and year follows.

March 2026

February 2026

Feb 27ReportAnnual report, FY2025 — revenue $2.79B (+26% y/y), net income $621.5M, EPS $12.86
Feb 278-K8-K · Non-reliance on prior financial statements
Feb 12Insider saleHsing Michael (CEO · Director) sold 33,000 shares for $38.7M at $1,155.71–$1,217.12 under a 10b5-1 plan
Feb 11Insider saleHsing Michael (CEO · Director) sold 33,000 shares for $39.2M at $1,158.71–$1,202.28 under a 10b5-1 plan
Feb 11Insider saleSciammas Maurice (EVP, WW Sales & Marketing) sold 200 shares for $236K at $1,179.98
Feb 10Insider saleHsing Michael (CEO · Director) sold 34,000 shares for $38.8M at $1,132.01–$1,197.26 under a 10b5-1 plan
Feb 9Insider saleLee Victor K (Director) sold 400 shares for $485K at $1,212.16 under a 10b5-1 plan
Feb 6Insider saleHsing Michael (CEO · Director) sold 54,923 shares for $64.3M at $1,171.16
Feb 6Insider saleSciammas Maurice (EVP, WW Sales & Marketing) sold 22,875 shares for $26.8M at $1,171.16
Feb 6Insider saleTseng Saria (EVP & General Counsel) sold 22,875 shares for $26.8M at $1,171.16
Feb 6Insider saleXiao Deming (EVP, Global Operations) sold 22,875 shares for $26.8M at $1,171.16
Feb 6Insider saleBLEGEN THEODORE (EVP and CFO) sold 21,725 shares for $25.4M at $1,171.16
Feb 5EarningsEarnings release — EPS $3.46 vs $3.63 est. (−4.7%); revenue $751.2M (+21% y/y) 6.4%
Feb 2Insider saleBLEGEN THEODORE (EVP and CFO) sold 3,000 shares for $3.4M at $1,110.58–$1,139.49 under a 10b5-1 plan

January 2026

Jan 2Insider saleBLEGEN THEODORE (EVP and CFO) sold 3,000 shares for $2.8M at $927.61–$946.62 under a 10b5-1 plan
Jan 2Insider saleLee Victor K (Director) sold 600 shares for $559K at $930.86 under a 10b5-1 plan

December 2025

Dec 128-K8-K · Monolithic Power Systems Announces Fourth Quarter 2025 DividendOther events

November 2025

Nov 218-K8-K · Charter, bylaws or fiscal-year change
Nov 5ReportQuarterly report, Q3 2025 — revenue $737.2M (+19% y/y), net income $179.8M, EPS $3.74

October 2025

Oct 30EarningsEarnings release — EPS $3.72 vs $3.54 est. (+5.1%); revenue $737.2M (+19% y/y) 7.6%

Insider transactions#

What officers, directors and 10% holders reported on Forms 4 and 5 over the last 13 months, from the documents themselves: one insider’s trades of one kind on one day are one row, with the shares, the price range and the total as filed. Open-market buys and sells first; awards, exercises, tax withholding, gifts and employee-plan purchases are grouped below them.

Over the last 13 months insiders sold $575.6M in 43 sales and bought nothing on the open market; 19 other transactions (awards, exercises, tax withholding, gifts and plan purchases).

Date	Insider	Action	Shares	Price	Value	Held after	Filing
Sep 28, 2026Form 4	Hsing MichaelCEO · DirectorSold · $40.3M · 30,000 sh · 10b5-1	Sold· 10b5-1 plan	30,000	$1,323.31–$1,356.94	$40.3M	818,264	Form 4
Aug 24, 2026Form 4	CHANG KUO WEI HERBERTDirectorSold · $64K · 50 sh	Sold	50	$1,281.57	$64K	515	Form 4
Aug 24, 2026Form 4	DEAN ROBERT W IIInterim CFOSold · $42K · 32 sh	Sold	32	$1,297.72	$42K	7,094	Form 4
Aug 17, 2026Form 4	DEAN ROBERT W IIInterim CFOSold · $8,482 · 6 sh	Sold	6	$1,413.64	$8,482	7,126	Form 4
Aug 11, 2026Form 4	CHANG KUO WEI HERBERTDirectorSold · $71K · 50 sh	Sold	50	$1,420.00	$71K	565	Form 4
Aug 5, 2026Form 4	DEAN ROBERT W IIInterim CFOSold · $141K · 105 sh	Sold	105	$1,344.27	$141K	7,132	Form 4
Aug 3, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $40K · 30 sh · 10b5-1	Sold· 10b5-1 plan	30	$1,343.94	$40K	1,119	Form 4
Jul 15, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $20.2M · 15,000 sh · 10b5-1	Sold· 10b5-1 plan	15,000	$1,314.03–$1,405.71	$20.2M	151,644	Form 4
Jul 1, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $41K · 30 sh · 10b5-1	Sold· 10b5-1 plan	30	$1,351.61	$41K	1,149	Form 4
Jun 1, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $46K · 30 sh · 10b5-1	Sold· 10b5-1 plan	30	$1,533.95	$46K	1,179	Form 4
May 27, 2026Form 4	Tseng SariaEVP & General CounselSold · $12.9M · 7,565 sh	Sold	7,565	$1,700.00	$12.9M	144,218	Form 4
May 26, 2026Form 4	Zhou JeffDirectorSold · $816K · 486 sh	Sold	486	$1,680.00	$816K	3,800	Form 4
May 26, 2026Form 4	DEAN ROBERT W IIInterim CFOSold · $36K · 22 sh	Sold	22	$1,649.56	$36K	5,878	Form 4
May 22, 2026Form 4	Tseng SariaEVP & General CounselSold · $7.9M · 5,000 sh	Sold	5,000	$1,586.43	$7.9M	151,783	Form 4
May 18, 2026Form 4	Hsing MichaelCEO · DirectorSold · $59.3M · 40,000 sh	Sold	40,000	$1,462.61–$1,521.43	$59.3M	848,263	Form 4
May 18, 2026Form 4	DEAN ROBERT W IIInterim CFOSold · $6,253 · 4 sh	Sold	4	$1,563.28	$6,253	5,900	Form 4
May 15, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $18.7M · 12,000 sh · 10b5-1	Sold· 10b5-1 plan	12,000	$1,550.36–$1,585.51	$18.7M	166,644	Form 4
May 6, 2026Form 4	Xiao DemingEVP, Global OperationsSold · $49.6M · 30,000 sh	Sold	30,000	$1,648.38–$1,661.38	$49.6M	205,959	Form 4
May 6, 2026Form 4	Elmiger Eugen JDirectorSold · $19.0M · 12,000 sh	Sold	12,000	$1,559.88–$1,600.14	$19.0M	5,402	Form 4
May 6, 2026Form 4	Zhou JeffDirectorSold · $825K · 500 sh	Sold	500	$1,650.00	$825K	4,286	Form 4
May 6, 2026Form 4	Wynne EileenDirectorSold · $530K · 335 sh	Sold	335	$1,582.68	$530K	1,007	Form 4
May 5, 2026Form 4	Zhou JeffDirectorSold · $1.6M · 1,014 sh	Sold	1,014	$1,574.48–$1,600.00	$1.6M	4,786	Form 4
May 5, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $602K · 380 sh	Sold	380	$1,583.81	$602K	919	Form 4
May 4, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $48K · 30 sh · 10b5-1	Sold· 10b5-1 plan	30	$1,588.73	$48K	1,209	Form 4
Apr 8, 2026Form 4	Tseng SariaEVP & General CounselSold · $11.7M · 8,963 sh · 10b5-1	Sold· 10b5-1 plan	8,963	$1,266.48–$1,321.94	$11.7M	156,983	Form 4
Apr 6, 2026Form 4	Tseng SariaEVP & General CounselSold · $8.9M · 7,636 sh · 10b5-1	Sold· 10b5-1 plan	7,636	$1,139.96–$1,179.50	$8.9M	165,946	Form 4
Apr 1, 2026Form 4	Tseng SariaEVP & General CounselSold · $1.6M · 1,400 sh · 10b5-1	Sold· 10b5-1 plan	1,400	$1,131.24–$1,136.99	$1.6M	173,582	Form 4
Apr 1, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $33K · 30 sh · 10b5-1	Sold· 10b5-1 plan	30	$1,116.44	$33K	1,239	Form 4
Mar 30, 2026Form 4	Tseng SariaEVP & General CounselSold · $25.9M · 25,674 sh · 10b5-1	Sold· 10b5-1 plan	25,674	$1,000.81–$1,041.12	$25.9M	174,982	Form 4
Mar 20, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $33K · 30 sh · 10b5-1	Sold· 10b5-1 plan	30	$1,095.07	$33K	1,269	Form 4
Feb 12, 2026Form 4	Hsing MichaelCEO · DirectorSold · $38.7M · 33,000 sh · 10b5-1	Sold· 10b5-1 plan	33,000	$1,155.71–$1,217.12	$38.7M	888,234	Form 4
Feb 11, 2026Form 4	Hsing MichaelCEO · DirectorSold · $39.2M · 33,000 sh · 10b5-1	Sold· 10b5-1 plan	33,000	$1,158.71–$1,202.28	$39.2M	921,234	Form 4
Feb 11, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $236K · 200 sh	Sold	200	$1,179.98	$236K	1,299	Form 4
Feb 10, 2026Form 4	Hsing MichaelCEO · DirectorSold · $38.8M · 34,000 sh · 10b5-1	Sold· 10b5-1 plan	34,000	$1,132.01–$1,197.26	$38.8M	954,234	Form 4
Feb 9, 2026Form 4	Lee Victor KDirectorSold · $485K · 400 sh · 10b5-1	Sold· 10b5-1 plan	400	$1,212.16	$485K	27,756	Form 4
Feb 6, 2026Form 4	Hsing MichaelCEO · DirectorSold · $64.3M · 54,923 sh	Sold	54,923	$1,171.16	$64.3M	988,234	Form 4
Feb 6, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingSold · $26.8M · 22,875 sh	Sold	22,875	$1,171.16	$26.8M	178,625	Form 4
Feb 6, 2026Form 4	Tseng SariaEVP & General CounselSold · $26.8M · 22,875 sh	Sold	22,875	$1,171.16	$26.8M	200,626	Form 4
Feb 6, 2026Form 4	Xiao DemingEVP, Global OperationsSold · $26.8M · 22,875 sh	Sold	22,875	$1,171.16	$26.8M	235,932	Form 4
Feb 6, 2026Form 4	BLEGEN THEODOREEVP and CFOSold · $25.4M · 21,725 sh	Sold	21,725	$1,171.16	$25.4M	82,353	Form 4
Feb 2, 2026Form 4	BLEGEN THEODOREEVP and CFOSold · $3.4M · 3,000 sh · 10b5-1	Sold· 10b5-1 plan	3,000	$1,110.58–$1,139.49	$3.4M	65,333	Form 4
Jan 2, 2026Form 4	BLEGEN THEODOREEVP and CFOSold · $2.8M · 3,000 sh · 10b5-1	Sold· 10b5-1 plan	3,000	$927.61–$946.62	$2.8M	68,332	Form 4
Jan 2, 2026Form 4	Lee Victor KDirectorSold · $559K · 600 sh · 10b5-1	Sold· 10b5-1 plan	600	$930.86	$559K	27,967	Form 4

Awards, exercises, withholding and plan purchases · 19 transactions

Date	Insider	Action	Shares	Price	Value	Held after	Filing
Aug 31, 2026Form 4	Tseng SariaEVP & General CounselGift · $0 · 4,000 sh	Gift	4,000	$0.00	$0	144,218	Form 4
Aug 24, 2026Form 4	DEAN ROBERT W IIInterim CFOOther · $0 · 5 sh	Other	5	$0.00	$0	7,089	Form 4
Aug 4, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingGift · $0 · 50,000 sh	Gift	50,000	$0.00	$0	162,706	Form 4
Jul 25, 2026Form 4	DEAN ROBERT W IIInterim CFOAward · $0 · 1,359 sh	Award	1,359	$0.00	$0	7,237	Form 4
May 29, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingGift · $0 · 12,472 sh	Gift	12,472	$0.00	$0	12,625	Form 4
May 22, 2026Form 4	Tseng SariaEVP & General CounselGift · $0 · 200 sh	Gift	200	$0.00	$0	156,783	Form 4
May 13, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingGift · $0 · 3,126 sh	Gift	3,126	$0.00	$0	76,120	Form 4
May 13, 2026Form 4	DEAN ROBERT W IIInterim CFOOther · $0 · 2,156 sh	Other	2,156	$0.00	$0	5,904	Form 4
Feb 3, 2026Form 4	Hsing MichaelCEO · DirectorAward · $0 · 136,825 sh	Award	136,825	$0.00	$0	1,043,157	Form 4
Feb 3, 2026Form 4	Sciammas MauriceEVP, WW Sales & MarketingAward · $0 · 57,170 sh	Award	57,170	$0.00	$0	201,500	Form 4
Feb 3, 2026Form 4	Tseng SariaEVP & General CounselAward · $0 · 57,170 sh	Award	57,170	$0.00	$0	223,501	Form 4
Feb 3, 2026Form 4	Xiao DemingEVP, Global OperationsAward · $0 · 57,170 sh	Award	57,170	$0.00	$0	258,807	Form 4
Feb 3, 2026Form 4	BLEGEN THEODOREEVP and CFOAward · $0 · 38,745 sh	Award	38,745	$0.00	$0	104,078	Form 4
Feb 3, 2026Form 4	Martinez CarintiaDirectorAward · $0 · 189 sh	Award	189	$0.00	$0	1,067	Form 4
Feb 3, 2026Form 4	Lee Victor KDirectorAward · $0 · 189 sh	Award	189	$0.00	$0	28,156	Form 4
Feb 3, 2026Form 4	Elmiger Eugen JDirectorAward · $0 · 189 sh	Award	189	$0.00	$0	17,402	Form 4
Feb 3, 2026Form 4	CHANG KUO WEI HERBERTDirectorAward · $0 · 189 sh	Award	189	$0.00	$0	615	Form 4
Feb 3, 2026Form 4	Zhou JeffDirectorAward · $0 · 189 sh	Award	189	$0.00	$0	5,800	Form 4
Feb 3, 2026Form 4	Wynne EileenDirectorAward · $0 · 189 sh	Award	189	$0.00	$0	1,342	Form 4

Reports and proxy statements#

Annual reports (10-K, 20-F, 40-F), quarterly reports (10-Q), current reports (8-K, 6-K) and proxy statements, newest first. An 8-K that furnishes a press release is headed by the release’s headline, its items beneath; any other 8-K is described by its items. A form opens the press release where there is one, else the document on EDGAR, or the filing’s index where it furnishes other exhibits.

2026 · 12 filings

Filed	Form	What it is	Period
Sep 10, 20268-K	8-K	Monolithic Power Systems Announces Third Quarter 2026 DividendOther events	Sep 10, 2026
Aug 5, 202610-Q	10-Q	Quarterly report, Q2 2026 — revenue $980.6M (+48% y/y), net income $257.3M, EPS $5.22	Jun 30, 2026
Jul 30, 20268-K	8-K	Earnings release — EPS $5.41 vs $4.84 est. (+11.8%); revenue $980.6M (+48% y/y) 8.3%	Jul 30, 2026
Jun 12, 20268-K	8-K	Monolithic Power Systems Announces Second Quarter 2026 DividendShareholder vote results; Other events	Jun 11, 2026
May 4, 202610-Q	10-Q	Quarterly report, Q1 2026 — revenue $804.2M (+26% y/y), net income $193.2M, EPS $3.92	Mar 31, 2026
Apr 30, 20268-K	8-K	Earnings release — EPS $4.11 vs $3.81 est. (+7.9%); revenue $804.2M (+26% y/y) 1.9%	Apr 30, 2026
Apr 30, 2026ARS	ARS	Annual report to shareholders	Dec 31, 2025
Apr 30, 2026DEFA14A	DEFA14A	Additional proxy materials	—
Apr 30, 2026DEF 14A	DEF 14A	Proxy statement	Jun 11, 2026
Feb 27, 202610-K	10-K	Annual report, FY2025 — revenue $2.79B (+26% y/y), net income $621.5M, EPS $12.86	Dec 31, 2025
Feb 27, 20268-K	8-K	Non-reliance on prior financial statements	Feb 26, 2026
Feb 5, 20268-K	8-K	Earnings release — EPS $3.46 vs $3.63 est. (−4.7%); revenue $751.2M (+21% y/y) 6.4%	Feb 3, 2026

2025 · 19 filings

Filed	Form	What it is	Period
Dec 12, 20258-K	8-K	Monolithic Power Systems Announces Fourth Quarter 2025 DividendOther events	Dec 12, 2025
Nov 21, 20258-K	8-K	Charter, bylaws or fiscal-year change	Nov 19, 2025
Nov 5, 202510-Q	10-Q	Quarterly report, Q3 2025 — revenue $737.2M (+19% y/y), net income $179.8M, EPS $3.74	Sep 30, 2025
Oct 30, 20258-K	8-K	Earnings release — EPS $3.72 vs $3.54 est. (+5.1%); revenue $737.2M (+19% y/y) 7.6%	Oct 30, 2025
Sep 11, 20258-K	8-K	Other events	Sep 11, 2025
Aug 4, 202510-Q	10-Q	Quarterly report, Q2 2025 — revenue $664.6M (+31% y/y), net income $135.0M, EPS $2.81	Jun 30, 2025
Jul 31, 20258-K	8-K	Results of operations	Jul 31, 2025
Jun 16, 20258-K	8-K	Charter, bylaws or fiscal-year change; Shareholder vote results; Other events	Jun 12, 2025
May 5, 202510-Q	10-Q	Quarterly report, Q1 2025 — revenue $637.6M (+39% y/y), net income $135.1M, EPS $2.81	Mar 31, 2025
May 2, 2025DEFR14A	DEFR14A	FORM DEFR14A	—
May 1, 20258-K	8-K	Results of operations	May 1, 2025
Apr 30, 2025ARS	ARS	Annual report to shareholders	Dec 31, 2024
Apr 30, 2025DEFA14A	DEFA14A	Additional proxy materials	—
Apr 30, 2025DEF 14A	DEF 14A	Proxy statement	Jun 12, 2025
Apr 18, 2025PRE 14A	PRE 14A	Preliminary proxy statement	Jun 12, 2025
Mar 26, 20258-K	8-K	Charter, bylaws or fiscal-year change	Mar 26, 2025
Mar 20, 20258-K	8-K	Regulation FD disclosure	Mar 20, 2025
Mar 3, 202510-K	10-K	Annual report, FY2024 — revenue $2.21B (+21% y/y), net income $1.59B, EPS $32.60	Dec 31, 2024
Feb 6, 20258-K	8-K	Results of operations; Other events	Feb 6, 2025

2024 · 17 filings

Filed	Form	What it is	Period
Dec 13, 20248-K	8-K	Other events	Dec 13, 2024
Nov 12, 20248-K	8-K	Regulation FD disclosure	Nov 11, 2024
Nov 6, 202410-Q	10-Q	Quarterly report, Q3 2024 — revenue $620.1M (+31% y/y), net income $144.4M, EPS $2.95	Sep 30, 2024
Oct 30, 20248-K	8-K	Results of operations	Oct 30, 2024
Oct 22, 20248-K	8-K	Directors or officers; compensation	Oct 21, 2024
Sep 13, 20248-K	8-K	Other events	Sep 13, 2024
Aug 2, 202410-Q	10-Q	Quarterly report, Q2 2024 — revenue $507.4M (+15% y/y), net income $100.4M, EPS $2.05	Jun 30, 2024
Aug 1, 20248-K	8-K	Results of operations; Other events	Jul 30, 2024
Jun 14, 20248-K	8-K	Shareholder vote results; Other events	Jun 13, 2024
Jun 6, 2024DEFA14A	DEFA14A	Additional proxy materials	—
May 3, 202410-Q	10-Q	Quarterly report, Q1 2024 — revenue $457.9M (+2% y/y), net income $92.5M, EPS $1.89	Mar 31, 2024
May 1, 20248-K	8-K	Results of operations	May 1, 2024
Apr 29, 2024DEFA14A	DEFA14A	Additional proxy materials	—
Apr 29, 2024DEF 14A	DEF 14A	Proxy statement	Jun 13, 2024
Apr 29, 2024ARS	ARS	Annual report to shareholders	Dec 31, 2023
Feb 29, 202410-K	10-K	Annual report, FY2023 — revenue $1.82B (+2% y/y), net income $427.4M, EPS $8.76	Dec 31, 2023
Feb 7, 20248-K	8-K	Results of operations; Other events	Feb 7, 2024

2023 · 17 filings — 7 × 8-K, 4 × DEFA14A, 3 × 10-Q and 3 other forms

Filed	Form	What it is	Period
Nov 8, 202310-Q	10-Q	Quarterly report, Q3 2023 — revenue $474.9M (−4% y/y), net income $121.2M, EPS $2.48	Sep 30, 2023
Aug 4, 202310-Q	10-Q	Quarterly report, Q2 2023 — revenue $441.1M (−4% y/y), net income $99.5M, EPS $2.04	Jun 30, 2023
Jun 7, 2023DEFA14A	DEFA14A	Additional proxy materials	—
Jun 5, 2023DEFA14A	DEFA14A	Additional proxy materials	—
May 22, 2023DEFA14A	DEFA14A	Additional proxy materials	—
May 5, 202310-Q	10-Q	Quarterly report, Q1 2023 — revenue $451.1M (+19% y/y), net income $109.8M, EPS $2.26	Mar 31, 2023
May 1, 2023ARS	ARS	Annual report to shareholders	Dec 31, 2022
May 1, 2023DEFA14A	DEFA14A	Additional proxy materials	—
May 1, 2023DEF 14A	DEF 14A	Proxy statement	—
Feb 24, 202310-K	10-K	Annual report, FY2022 — revenue $1.79B (+49% y/y), net income $437.7M, EPS $9.05	Dec 31, 2022

7 current reports (8-K) not listed; the year is on EDGAR.

2022 · 14 filings — 8 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Filed	Form	What it is	Period
Nov 9, 202210-Q	10-Q	Quarterly report, Q3 2022 — revenue $495.4M (+53% y/y), net income $124.3M, EPS $2.57	Sep 30, 2022
Aug 5, 202210-Q	10-Q	Quarterly report, Q2 2022 — revenue $461.0M (+57% y/y), net income $114.7M, EPS $2.37	Jun 30, 2022
May 10, 202210-Q	10-Q	Quarterly report, Q1 2022 — revenue $377.7M (+48% y/y), net income $79.6M, EPS $1.65	Mar 31, 2022
May 2, 2022DEFA14A	DEFA14A	Additional proxy materials	—
May 2, 2022DEF 14A	DEF 14A	Proxy statement	Jun 16, 2022
Feb 25, 202210-K	10-K	Annual report, FY2021 — revenue $1.21B (+43% y/y), net income $242.0M, EPS $5.05	Dec 31, 2021

8 current reports (8-K) not listed; the year is on EDGAR.

2021 · 15 filings — 8 × 8-K, 3 × 10-Q, 2 × DEFA14A and 2 other forms

Filed	Form	What it is	Period
Nov 8, 202110-Q	10-Q	Quarterly report, Q3 2021 — revenue $323.5M (+25% y/y), net income $68.8M, EPS $1.44	Sep 30, 2021
Aug 9, 202110-Q	10-Q	Quarterly report, Q2 2021 — revenue $293.3M (+58% y/y), net income $55.2M, EPS $1.16	Jun 30, 2021
Jun 7, 2021DEFA14A	DEFA14A	Additional proxy materials	—
May 10, 202110-Q	10-Q	Quarterly report, Q1 2021 — revenue $254.5M (+53% y/y), net income $45.4M, EPS $0.95	Mar 31, 2021
Apr 30, 2021DEFA14A	DEFA14A	Additional proxy materials	—
Apr 30, 2021DEF 14A	DEF 14A	Proxy statement	Jun 10, 2021
Mar 1, 202110-K	10-K	Annual report, FY2020 — revenue $844.5M (+34% y/y), net income $164.4M, EPS $3.50	Dec 31, 2020

8 current reports (8-K) not listed; the year is on EDGAR.

2020 · 15 filings — 8 × 8-K, 3 × 10-Q, 2 × DEFA14A and 2 other forms

Filed	Form	What it is	Period
Nov 6, 202010-Q	10-Q	Quarterly report, Q3 2020 — revenue $259.4M (+54% y/y), net income $55.6M, EPS $1.18	Sep 30, 2020
Aug 3, 202010-Q	10-Q	Quarterly report, Q2 2020 — revenue $186.2M (+23% y/y), net income $30.2M, EPS $0.64	Jun 30, 2020
May 28, 2020DEFA14A	DEFA14A	Additional proxy materials	—
May 11, 202010-Q	10-Q	Quarterly report, Q1 2020 — revenue $165.8M (+17% y/y), net income $35.8M, EPS $0.77	Mar 31, 2020
Apr 29, 2020DEFA14A	DEFA14A	Additional proxy materials	—
Apr 29, 2020DEF 14A	DEF 14A	Proxy statement	Jun 11, 2020
Feb 28, 202010-K	10-K	Annual report, FY2019 — revenue $627.9M (+8% y/y), net income $108.8M, EPS $2.38	Dec 31, 2019

8 current reports (8-K) not listed; the year is on EDGAR.

2019 · 14 filings — 8 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Filed	Form	What it is	Period
Nov 1, 201910-Q	10-Q	Quarterly report, Q3 2019 — revenue $168.8M (+6% y/y), net income $29.5M, EPS $0.64	Sep 30, 2019
Aug 2, 201910-Q	10-Q	Quarterly report, Q2 2019 — revenue $151.0M (+8% y/y), net income $20.7M, EPS $0.45	Jun 30, 2019
May 10, 201910-Q	10-Q	Quarterly report, Q1 2019 — revenue $141.4M (+9% y/y), net income $26.2M, EPS $0.58	Mar 31, 2019
Apr 30, 2019DEFA14A	DEFA14A	Additional proxy materials	—
Apr 30, 2019DEF 14A	DEF 14A	Proxy statement	Jun 13, 2019
Mar 1, 201910-K	10-K	Annual report, FY2018 — revenue $582.4M (+24% y/y), net income $105.3M, EPS $2.36	Dec 31, 2018

8 current reports (8-K) not listed; the year is on EDGAR.

2018 · 16 filings — 10 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Filed	Form	What it is	Period
Nov 2, 201810-Q	10-Q	Quarterly report, Q3 2018 — revenue $160.0M (+24% y/y), net income $31.6M, EPS $0.71	Sep 30, 2018
Aug 2, 201810-Q	10-Q	Quarterly report, Q2 2018 — revenue $139.8M (+25% y/y), net income $24.2M, EPS $0.55	Jun 30, 2018
May 8, 201810-Q	10-Q	Quarterly report, Q1 2018 — revenue $129.2M (+29% y/y), net income $21.9M, EPS $0.49	Mar 31, 2018
Apr 30, 2018DEFA14A	DEFA14A	Additional proxy materials	—
Apr 30, 2018DEF 14A	DEF 14A	Proxy statement	Jun 14, 2018
Mar 1, 201810-K	10-K	Annual report, FY2017 — revenue $470.9M (+21% y/y), net income $65.2M, EPS $1.50	Dec 31, 2017

10 current reports (8-K) not listed; the year is on EDGAR.

2017 · 14 filings — 8 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Filed	Form	What it is	Period
Nov 6, 201710-Q	10-Q	Quarterly report, Q3 2017 — revenue $128.9M (+21% y/y), net income $23.6M, EPS $0.54	Sep 30, 2017
Jul 31, 201710-Q	10-Q	Quarterly report, Q2 2017 — revenue $112.2M (+19% y/y), net income $15.0M, EPS $0.35	Jun 30, 2017
May 5, 201710-Q	10-Q	Quarterly report, Q1 2017 — revenue $100.4M (+19% y/y), net income $14.5M, EPS $0.33	Mar 31, 2017
Apr 28, 2017DEFA14A	DEFA14A	Additional proxy materials	—
Apr 28, 2017DEF 14A	DEF 14A	Proxy statement	Jun 15, 2017
Mar 1, 201710-K	10-K	Annual report, FY2016 — revenue $388.7M (+17% y/y), net income $52.7M, EPS $1.26	Dec 31, 2016

8 current reports (8-K) not listed; the year is on EDGAR.

2016 · 16 filings — 10 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2015 · 14 filings — 8 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2014 · 17 filings — 10 × 8-K, 3 × 10-Q, 2 × DEFA14A and 2 other forms

Counted, not listed; the year is on EDGAR.

2013 · 16 filings — 8 × 8-K, 3 × 10-Q, 3 × DEFA14A and 2 other forms

Counted, not listed; the year is on EDGAR.

2012 · 15 filings — 7 × 8-K, 3 × 10-Q, 2 × DEFA14A and 3 other forms

Counted, not listed; the year is on EDGAR.

2011 · 16 filings — 9 × 8-K, 3 × 10-Q, 2 × DEFA14A and 2 other forms

Counted, not listed; the year is on EDGAR.

2010 · 13 filings — 7 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2009 · 15 filings — 9 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2008 · 17 filings — 11 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2007 · 18 filings — 12 × 8-K, 3 × 10-Q, 1 × 10-K and 2 other forms

Counted, not listed; the year is on EDGAR.

2006 · 25 filings — 16 × 8-K, 4 × 10-Q, 2 × 10-Q/A and 3 other forms

Counted, not listed; the year is on EDGAR.

2005 · 15 filings — 11 × 8-K, 2 × 10-Q, 1 × 10-K and 1 other form

Counted, not listed; the year is on EDGAR.

2004 · 3 filings — 3 × 8-K

Counted, not listed; the year is on EDGAR.

Insider, ownership and other filings#

Insider ownership (Forms 3, 4, 5 and 144), beneficial ownership (Schedules 13D and 13G), registration and prospectus (S-1, S-3, S-8, 424B and related) and the rest, counted by year, with the newest 25 of each of the latest 3 years shown. A Form 4 is one insider’s transaction report; a 13G is a passive holder above five percent.

2026 · 112 filings — 59 × 4, 44 × 144, 4 × SCHEDULE 13G/A and 3 other forms

Filed	Form	What it is	Period
Sep 30, 20264	4	Insider transaction (Form 4)	Sep 28, 2026
Sep 28, 2026144	144	Notice of proposed sale (Form 144)	—
Sep 2, 20264	4	Insider transaction (Form 4)	Aug 31, 2026
Aug 26, 20264	4	Insider transaction (Form 4)	Aug 24, 2026
Aug 25, 20264	4	Insider transaction (Form 4)	Aug 24, 2026
Aug 24, 2026144	144	Notice of proposed sale (Form 144)	—
Aug 19, 20264	4	Insider transaction (Form 4)	Aug 17, 2026
Aug 17, 2026144	144	Notice of proposed sale (Form 144)	—
Aug 13, 20264	4	Insider transaction (Form 4)	Aug 11, 2026
Aug 11, 2026144	144	Notice of proposed sale (Form 144)	—
Aug 6, 20264	4	Insider transaction (Form 4)	Aug 4, 2026
Aug 6, 20264	4	Insider transaction (Form 4)	Aug 5, 2026
Aug 5, 20264	4	Insider transaction (Form 4)	Aug 3, 2026
Aug 5, 2026144	144	Notice of proposed sale (Form 144)	—
Jul 28, 20264	4	Insider transaction (Form 4)	Jul 25, 2026
Jul 17, 20264	4	Insider transaction (Form 4)	Jul 15, 2026
Jul 15, 2026144	144	Notice of proposed sale (Form 144)	—
Jul 15, 2026SCHEDULE 13G	SCHEDULE 13G	Other filings	—
Jul 8, 2026SCHEDULE 13G/A	SCHEDULE 13G/A	Other filings	—
Jul 6, 20264	4	Insider transaction (Form 4)	Jul 1, 2026
Jun 3, 20264	4	Insider transaction (Form 4)	Jun 1, 2026
Jun 2, 20264	4	Insider transaction (Form 4)	May 29, 2026
Jun 1, 2026144	144	Notice of proposed sale (Form 144)	—
May 29, 20264	4	Insider transaction (Form 4)	May 27, 2026
May 29, 2026SD	SD	Specialized disclosure (conflict minerals)	—

The newest 25 of 112 shown; the full year is on EDGAR.

2025 · 119 filings — 66 × 4, 50 × 144, 2 × SCHEDULE 13G/A and 1 other form

Filed	Form	What it is	Period
Dec 30, 20254	4	Insider transaction (Form 4)	Dec 24, 2025
Dec 29, 20254	4	Insider transaction (Form 4)	Dec 24, 2025
Dec 29, 2025144	144	Notice of proposed sale (Form 144)	—
Dec 11, 20254	4	Insider transaction (Form 4)	Dec 9, 2025
Dec 2, 20254	4	Insider transaction (Form 4)	Dec 1, 2025
Dec 1, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 28, 20254	4	Insider transaction (Form 4)	Nov 26, 2025
Nov 28, 20254	4	Insider transaction (Form 4)	Nov 25, 2025
Nov 26, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 25, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 25, 20254	4	Insider transaction (Form 4)	Nov 25, 2025
Nov 25, 20254	4	Insider transaction (Form 4)	Nov 24, 2025
Nov 24, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 24, 20254	4	Insider transaction (Form 4)	Nov 21, 2025
Nov 21, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 20, 20254	4	Insider transaction (Form 4)	Nov 19, 2025
Nov 20, 20254	4	Insider transaction (Form 4)	Nov 19, 2025
Nov 19, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 14, 20254	4	Insider transaction (Form 4)	Nov 13, 2025
Nov 13, 20254	4	Insider transaction (Form 4)	Nov 12, 2025
Nov 13, 20254	4	Insider transaction (Form 4)	Nov 11, 2025
Nov 12, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 12, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 12, 2025144	144	Notice of proposed sale (Form 144)	—
Nov 6, 20254	4	Insider transaction (Form 4)	Nov 5, 2025

The newest 25 of 119 shown; the full year is on EDGAR.

2024 · 169 filings — 89 × 4, 73 × 144, 3 × SC 13G/A and 3 other forms

Filed	Form	What it is	Period
Dec 11, 20244	4	Insider transaction (Form 4)	Dec 9, 2024
Dec 9, 2024144	144	Notice of proposed sale (Form 144)	—
Nov 13, 20244	4	Insider transaction (Form 4)	Nov 8, 2024
Nov 13, 20244	4	Insider transaction (Form 4)	Nov 8, 2024
Nov 13, 20244	4	Insider transaction (Form 4)	Nov 8, 2024
Nov 13, 20244	4	Insider transaction (Form 4)	Nov 8, 2024
Nov 13, 20244	4	Insider transaction (Form 4)	Nov 8, 2024
Nov 12, 2024SC 13G/A	SC 13G/A	Passive holder above 5% (Schedule 13G), amended	—
Nov 8, 2024144	144	Notice of proposed sale (Form 144)	—
Nov 8, 2024144	144	Notice of proposed sale (Form 144)	—
Nov 8, 2024144	144	Notice of proposed sale (Form 144)	—
Nov 8, 2024144	144	Notice of proposed sale (Form 144)	—
Nov 8, 2024144	144	Notice of proposed sale (Form 144)	—
Nov 5, 20244	4	Insider transaction (Form 4)	Nov 1, 2024
Nov 1, 2024144	144	Notice of proposed sale (Form 144)	—
Oct 8, 20244	4	Insider transaction (Form 4)	Oct 7, 2024
Oct 7, 2024144	144	Notice of proposed sale (Form 144)	—
Oct 2, 20244	4	Insider transaction (Form 4)	Oct 1, 2024
Oct 1, 2024144	144	Notice of proposed sale (Form 144)	—
Sep 3, 20244	4	Insider transaction (Form 4)	Sep 3, 2024
Sep 3, 2024144	144	Notice of proposed sale (Form 144)	—
Aug 29, 20244	4	Insider transaction (Form 4)	Aug 29, 2024
Aug 29, 20244	4	Insider transaction (Form 4)	Aug 27, 2024
Aug 28, 2024144	144	Notice of proposed sale (Form 144)	—
Aug 27, 2024144	144	Notice of proposed sale (Form 144)	—

The newest 25 of 169 shown; the full year is on EDGAR.

2023 · 158 filings — 95 × 4, 56 × 144, 2 × SC 13G and 4 other forms

Counted, not listed; the year is on EDGAR.

2022 · 84 filings — 81 × 4, 2 × SC 13G/A, 1 × SD

Counted, not listed; the year is on EDGAR.

2021 · 125 filings — 120 × 4, 3 × SC 13G/A, 1 × 3 and 1 other form

Counted, not listed; the year is on EDGAR.

2020 · 116 filings — 111 × 4, 3 × SC 13G/A, 1 × S-8 and 1 other form

Counted, not listed; the year is on EDGAR.

2019 · 117 filings — 114 × 4, 2 × SC 13G/A, 1 × SD

Counted, not listed; the year is on EDGAR.

2018 · 83 filings — 80 × 4, 2 × SC 13G/A, 1 × SD

Counted, not listed; the year is on EDGAR.

2017 · 82 filings — 74 × 4, 2 × SC 13G/A, 2 × UPLOAD and 4 other forms

Counted, not listed; the year is on EDGAR.

2016 · 94 filings — 87 × 4, 4 × SC 13G/A, 1 × 3 and 2 other forms

Counted, not listed; the year is on EDGAR.

2015 · 114 filings — 107 × 4, 4 × SC 13G/A, 2 × 4/A and 1 other form

Counted, not listed; the year is on EDGAR.

2014 · 134 filings — 114 × 4, 9 × SC 13G/A, 3 × 4/A and 5 other forms

Counted, not listed; the year is on EDGAR.

2013 · 181 filings — 164 × 4, 7 × 4/A, 7 × SC 13G/A and 2 other forms

Counted, not listed; the year is on EDGAR.

2012 · 174 filings — 159 × 4, 5 × 4/A, 5 × SC 13G and 3 other forms

Counted, not listed; the year is on EDGAR.

2011 · 141 filings — 129 × 4, 7 × 4/A, 2 × SC 13G and 2 other forms

Counted, not listed; the year is on EDGAR.

2010 · 120 filings — 95 × 4, 13 × 4/A, 4 × SC 13G/A and 4 other forms

Counted, not listed; the year is on EDGAR.

2009 · 94 filings — 77 × 4, 5 × SC 13G, 5 × SC 13G/A and 3 other forms

Counted, not listed; the year is on EDGAR.

2008 · 153 filings — 132 × 4, 8 × SC 13G, 5 × 4/A and 5 other forms

Counted, not listed; the year is on EDGAR.

2007 · 137 filings — 122 × 4, 5 × SC 13G/A, 4 × SC 13G and 4 other forms

Counted, not listed; the year is on EDGAR.

2006 · 48 filings — 27 × 4, 6 × SC 13G, 5 × SC 13G/A and 6 other forms

Counted, not listed; the year is on EDGAR.

2005 · 46 filings — 34 × 4, 7 × SC 13G, 2 × 4/A and 3 other forms

Counted, not listed; the year is on EDGAR.

2004 · 26 filings — 10 × 3, 6 × 4, 5 × S-1/A and 5 other forms

Counted, not listed; the year is on EDGAR.

About this data#

Monolithic Power Systems Inc. (MPWR) has 2,980 filings on EDGAR going back to 2004: 24 annual reports, 68 quarterly reports and 203 current reports, plus proxy statements, insider forms and ownership schedules. Its latest annual report, a 10-K, was filed on Feb 27, 2026 for the fiscal year ended Dec 31, 2025. The most recent 8-K, on Sep 10, 2026, furnished a press release headed “Monolithic Power Systems Announces Third Quarter 2026 Dividend”. Over the last 13 months insiders sold $575.6M in 43 sales and bought nothing on the open market; 19 other transactions (awards, exercises, tax withholding, gifts and plan purchases). Not investment advice.

Every row is a filing EDGAR lists for the registrants that have been Monolithic Power Systems Inc., read from the SEC’s submissions index each morning; a filing accepted after that read appears the next day. Where a company changed its filing entity (a holding-company reorganisation, Google into Alphabet) the predecessor’s filings are shown for the years it filed as the company, derived from the filings themselves. Dates are the filing date; the period is the report’s own. The latest 3 years of reports are listed in full, the next years to 10 without their 8-Ks, and older years are counted; the other forms are counted too, with the newest 25 of each of the latest 3 years shown. Insider transactions are the Form 4 and Form 5 documents themselves, filed since January 2026, every number as the insider filed it: a day’s lots are summed, a blank price adds its shares and no dollars, and a purchase through an employee stock plan is a plan purchase, not insider buying. An 8-K’s headline is the first line of the press release it furnishes (Exhibit 99), read from the filing and shown word for word; where two independent readings of the exhibit do not agree, the 8-K is described by its items instead. The documents stay on sec.gov, public domain, and every link opens the SEC’s copy. ChartRow does not summarise or interpret filings.

FAQ#

Where can I read MPWR's latest 10-K?: MPWR's latest annual report, a 10-K, was filed on Feb 27, 2026 for the fiscal year ended Dec 31, 2025. It is linked above and opens on EDGAR, the SEC's own site, where every exhibit is also listed.
When did MPWR last file an 8-K?: On Sep 10, 2026 it furnished a press release headed “Monolithic Power Systems Announces Third Quarter 2026 Dividend”. An 8-K reports a material event between quarterly reports; the one that furnishes the quarter's results is filed under Item 2.02, last on Jul 30, 2026.
Are MPWR insiders buying or selling?: Over the last 13 months insiders sold $575.6M in 43 sales and bought nothing on the open market; 19 other transactions (awards, exercises, tax withholding, gifts and plan purchases). The most recent sale: Hsing Michael (CEO · Director) sold 30,000 shares on Sep 28, 2026 for $40.3M, under a 10b5-1 plan. Every figure is as the insider filed it on Form 4; a sale under a 10b5-1 plan was scheduled in advance.
How many SEC filings has MPWR made?: 2,980 filings are on EDGAR under the registrant records that have been Monolithic Power Systems Inc., going back to 2004; 2,447 of them are insider ownership forms (Forms 3, 4, 5 and 144).

MPWR SEC filings (2026)

What happened, last 12 months#

September 2026

August 2026

July 2026

June 2026

May 2026

April 2026

March 2026

February 2026

January 2026

December 2025

November 2025

October 2025

Insider transactions#

Reports and proxy statements#

Insider, ownership and other filings#

About this data#

FAQ#