Civic Intelligence

Silicon Motion Inc.

Plan context: Silicon Motion Inc. 401K Plan

EIN 77-0414057 • Milpitas, CA • 29 filings • 4 plans

1591 Mccarthy Blvd.Milpitas, CA 95035
Current Snapshot

Latest Year

2025

2025 Participants

39

2025 Assets

$21,182,592

2025 Contributions

$1,482,255

Historical Graphs

Total Assets Over Time

Aggregate end-of-year assets by filing year, excluding zero-asset years

$21,182,592$10,591,296$0199920122025YearValue
$21,182,592Latest year 2025

Participants Over Time

Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans

111560199920122025YearValue
39Latest year 2025

Company Timeline

Year summaries and individual filings are combined here so you can stay in one place while moving across years and plan filings.

Year / FilingFilingsParticipantsAssetsContributionsContrib./Participant
2025139$21,182,592$1,482,255$38,007iApproximate average salary by contribution assumption: employee only about $950,163 at 4% or $633,442 at 6%; with 50% employer match about $633,442 at 4% or $422,295 at 6%; with 100% employer match about $475,082 at 4% or $316,721 at 6%.
Silicon Motion Inc. 401K Plan-39$21,182,592$1,482,255$38,007iApproximate average salary by contribution assumption: employee only about $950,163 at 4% or $633,442 at 6%; with 50% employer match about $633,442 at 4% or $422,295 at 6%; with 100% employer match about $475,082 at 4% or $316,721 at 6%.
2024138$18,037,689$1,023,698$26,939iApproximate average salary by contribution assumption: employee only about $673,486 at 4% or $448,990 at 6%; with 50% employer match about $448,990 at 4% or $299,327 at 6%; with 100% employer match about $336,743 at 4% or $224,495 at 6%.
Silicon Motion Inc. 401K Plan-38$18,037,689$1,023,698$26,939iApproximate average salary by contribution assumption: employee only about $673,486 at 4% or $448,990 at 6%; with 50% employer match about $448,990 at 4% or $299,327 at 6%; with 100% employer match about $336,743 at 4% or $224,495 at 6%.
2023140$15,684,855$957,758$23,944iApproximate average salary by contribution assumption: employee only about $598,599 at 4% or $399,066 at 6%; with 50% employer match about $399,066 at 4% or $266,044 at 6%; with 100% employer match about $299,299 at 4% or $199,533 at 6%.
Silicon Motion Inc. 401K Plan-40$15,684,855$957,758$23,944iApproximate average salary by contribution assumption: employee only about $598,599 at 4% or $399,066 at 6%; with 50% employer match about $399,066 at 4% or $266,044 at 6%; with 100% employer match about $299,299 at 4% or $199,533 at 6%.
2022139$12,940,008$910,781$23,353iApproximate average salary by contribution assumption: employee only about $583,834 at 4% or $389,223 at 6%; with 50% employer match about $389,223 at 4% or $259,482 at 6%; with 100% employer match about $291,917 at 4% or $194,611 at 6%.
Silicon Motion Inc. 401K Plan-39$12,940,008$910,781$23,353iApproximate average salary by contribution assumption: employee only about $583,834 at 4% or $389,223 at 6%; with 50% employer match about $389,223 at 4% or $259,482 at 6%; with 100% employer match about $291,917 at 4% or $194,611 at 6%.
2021139$15,829,571$929,527$23,834iApproximate average salary by contribution assumption: employee only about $595,851 at 4% or $397,234 at 6%; with 50% employer match about $397,234 at 4% or $264,823 at 6%; with 100% employer match about $297,925 at 4% or $198,617 at 6%.
Silicon Motion Inc. 401K Plan-39$15,829,571$929,527$23,834iApproximate average salary by contribution assumption: employee only about $595,851 at 4% or $397,234 at 6%; with 50% employer match about $397,234 at 4% or $264,823 at 6%; with 100% employer match about $297,925 at 4% or $198,617 at 6%.
2020138$13,402,754$789,573$20,778iApproximate average salary by contribution assumption: employee only about $519,456 at 4% or $346,304 at 6%; with 50% employer match about $346,304 at 4% or $230,869 at 6%; with 100% employer match about $259,728 at 4% or $173,152 at 6%.
Silicon Motion Inc. 401K Plan-38$13,402,754$789,573$20,778iApproximate average salary by contribution assumption: employee only about $519,456 at 4% or $346,304 at 6%; with 50% employer match about $346,304 at 4% or $230,869 at 6%; with 100% employer match about $259,728 at 4% or $173,152 at 6%.
2019138$10,819,321$834,457$21,959iApproximate average salary by contribution assumption: employee only about $548,985 at 4% or $365,990 at 6%; with 50% employer match about $365,990 at 4% or $243,993 at 6%; with 100% employer match about $274,492 at 4% or $182,995 at 6%.
Silicon Motion Inc. 401K Plan-38$10,819,321$834,457$21,959iApproximate average salary by contribution assumption: employee only about $548,985 at 4% or $365,990 at 6%; with 50% employer match about $365,990 at 4% or $243,993 at 6%; with 100% employer match about $274,492 at 4% or $182,995 at 6%.
2018143$8,974,805$1,279,387$29,753iApproximate average salary by contribution assumption: employee only about $743,830 at 4% or $495,886 at 6%; with 50% employer match about $495,886 at 4% or $330,591 at 6%; with 100% employer match about $371,915 at 4% or $247,943 at 6%.
Silicon Motion Inc. 401K Plan-43$8,974,805$1,279,387$29,753iApproximate average salary by contribution assumption: employee only about $743,830 at 4% or $495,886 at 6%; with 50% employer match about $495,886 at 4% or $330,591 at 6%; with 100% employer match about $371,915 at 4% or $247,943 at 6%.
2017142$9,015,927$720,343$17,151iApproximate average salary by contribution assumption: employee only about $428,776 at 4% or $285,850 at 6%; with 50% employer match about $285,850 at 4% or $190,567 at 6%; with 100% employer match about $214,388 at 4% or $142,925 at 6%.
Silicon Motion Inc. 401K Plan-42$9,015,927$720,343$17,151iApproximate average salary by contribution assumption: employee only about $428,776 at 4% or $285,850 at 6%; with 50% employer match about $285,850 at 4% or $190,567 at 6%; with 100% employer match about $214,388 at 4% or $142,925 at 6%.
2016142$7,918,100$853,273$20,316iApproximate average salary by contribution assumption: employee only about $507,901 at 4% or $338,600 at 6%; with 50% employer match about $338,600 at 4% or $225,734 at 6%; with 100% employer match about $253,950 at 4% or $169,300 at 6%.
Silicon Motion Inc. 401K Plan-42$7,918,100$853,273$20,316iApproximate average salary by contribution assumption: employee only about $507,901 at 4% or $338,600 at 6%; with 50% employer match about $338,600 at 4% or $225,734 at 6%; with 100% employer match about $253,950 at 4% or $169,300 at 6%.
2015144$7,312,540$568,423$12,919iApproximate average salary by contribution assumption: employee only about $322,968 at 4% or $215,312 at 6%; with 50% employer match about $215,312 at 4% or $143,541 at 6%; with 100% employer match about $161,484 at 4% or $107,656 at 6%.
Silicon Motion Inc. 401K Plan-44$7,312,540$568,423$12,919iApproximate average salary by contribution assumption: employee only about $322,968 at 4% or $215,312 at 6%; with 50% employer match about $215,312 at 4% or $143,541 at 6%; with 100% employer match about $161,484 at 4% or $107,656 at 6%.
2014137$6,892,486$490,022$13,244iApproximate average salary by contribution assumption: employee only about $331,096 at 4% or $220,731 at 6%; with 50% employer match about $220,731 at 4% or $147,154 at 6%; with 100% employer match about $165,548 at 4% or $110,365 at 6%.
Silicon Motion Inc. 401K Plan-37$6,892,486$490,022$13,244iApproximate average salary by contribution assumption: employee only about $331,096 at 4% or $220,731 at 6%; with 50% employer match about $220,731 at 4% or $147,154 at 6%; with 100% employer match about $165,548 at 4% or $110,365 at 6%.
2013133$6,613,071$421,636$12,777iApproximate average salary by contribution assumption: employee only about $319,421 at 4% or $212,947 at 6%; with 50% employer match about $212,947 at 4% or $141,965 at 6%; with 100% employer match about $159,711 at 4% or $106,474 at 6%.
Silicon Motion Inc. 401K Plan-33$6,613,071$421,636$12,777iApproximate average salary by contribution assumption: employee only about $319,421 at 4% or $212,947 at 6%; with 50% employer match about $212,947 at 4% or $141,965 at 6%; with 100% employer match about $159,711 at 4% or $106,474 at 6%.
2012131$5,237,971$438,777$14,154iApproximate average salary by contribution assumption: employee only about $353,852 at 4% or $235,902 at 6%; with 50% employer match about $235,902 at 4% or $157,268 at 6%; with 100% employer match about $176,926 at 4% or $117,951 at 6%.
Silicon Motion Inc. 401K Plan-31$5,237,971$438,777$14,154iApproximate average salary by contribution assumption: employee only about $353,852 at 4% or $235,902 at 6%; with 50% employer match about $235,902 at 4% or $157,268 at 6%; with 100% employer match about $176,926 at 4% or $117,951 at 6%.
2011133$4,639,839$404,600$12,261iApproximate average salary by contribution assumption: employee only about $306,515 at 4% or $204,343 at 6%; with 50% employer match about $204,343 at 4% or $136,229 at 6%; with 100% employer match about $153,258 at 4% or $102,172 at 6%.
Silicon Motion Inc. 401K Plan-33$4,639,839$404,600$12,261iApproximate average salary by contribution assumption: employee only about $306,515 at 4% or $204,343 at 6%; with 50% employer match about $204,343 at 4% or $136,229 at 6%; with 100% employer match about $153,258 at 4% or $102,172 at 6%.
2010131$4,504,994$361,071$11,647iApproximate average salary by contribution assumption: employee only about $291,186 at 4% or $194,124 at 6%; with 50% employer match about $194,124 at 4% or $129,416 at 6%; with 100% employer match about $145,593 at 4% or $97,062 at 6%.
Silicon Motion Inc. 401K Plan-31$4,504,994$361,071$11,647iApproximate average salary by contribution assumption: employee only about $291,186 at 4% or $194,124 at 6%; with 50% employer match about $194,124 at 4% or $129,416 at 6%; with 100% employer match about $145,593 at 4% or $97,062 at 6%.
2009134$4,194,242$330,872$9,732iApproximate average salary by contribution assumption: employee only about $243,288 at 4% or $162,192 at 6%; with 50% employer match about $162,192 at 4% or $108,128 at 6%; with 100% employer match about $121,644 at 4% or $81,096 at 6%.
Silicon Motion Inc. 401K Plan-34$4,194,242$330,872$9,732iApproximate average salary by contribution assumption: employee only about $243,288 at 4% or $162,192 at 6%; with 50% employer match about $162,192 at 4% or $108,128 at 6%; with 100% employer match about $121,644 at 4% or $81,096 at 6%.
2008135$3,059,687$431,678$12,334iApproximate average salary by contribution assumption: employee only about $308,341 at 4% or $205,561 at 6%; with 50% employer match about $205,561 at 4% or $137,041 at 6%; with 100% employer match about $154,171 at 4% or $102,780 at 6%.
Silicon Motion Inc. 401K Plan-35$3,059,687$431,678$12,334iApproximate average salary by contribution assumption: employee only about $308,341 at 4% or $205,561 at 6%; with 50% employer match about $205,561 at 4% or $137,041 at 6%; with 100% employer match about $154,171 at 4% or $102,780 at 6%.
2007136$4,475,435$412,238$11,451iApproximate average salary by contribution assumption: employee only about $286,276 at 4% or $190,851 at 6%; with 50% employer match about $190,851 at 4% or $127,234 at 6%; with 100% employer match about $143,138 at 4% or $95,425 at 6%.
Silicon Motion Inc. 401K Plan-36$4,475,435$412,238$11,451iApproximate average salary by contribution assumption: employee only about $286,276 at 4% or $190,851 at 6%; with 50% employer match about $190,851 at 4% or $127,234 at 6%; with 100% employer match about $143,138 at 4% or $95,425 at 6%.
2006129$4,019,096$328,767$11,337iApproximate average salary by contribution assumption: employee only about $283,420 at 4% or $188,947 at 6%; with 50% employer match about $188,947 at 4% or $125,964 at 6%; with 100% employer match about $141,710 at 4% or $94,473 at 6%.
Silicon Motion Inc. 401K Plan-29$4,019,096$328,767$11,337iApproximate average salary by contribution assumption: employee only about $283,420 at 4% or $188,947 at 6%; with 50% employer match about $188,947 at 4% or $125,964 at 6%; with 100% employer match about $141,710 at 4% or $94,473 at 6%.
2005131$3,447,223$193,919$6,255iApproximate average salary by contribution assumption: employee only about $156,386 at 4% or $104,258 at 6%; with 50% employer match about $104,258 at 4% or $69,505 at 6%; with 100% employer match about $78,193 at 4% or $52,129 at 6%.
Silicon Motion Inc. 401K Plan-31$3,447,223$193,919$6,255iApproximate average salary by contribution assumption: employee only about $156,386 at 4% or $104,258 at 6%; with 50% employer match about $104,258 at 4% or $69,505 at 6%; with 100% employer match about $78,193 at 4% or $52,129 at 6%.
2004119$3,517,543$345,833$18,202iApproximate average salary by contribution assumption: employee only about $455,043 at 4% or $303,362 at 6%; with 50% employer match about $303,362 at 4% or $202,242 at 6%; with 100% employer match about $227,522 at 4% or $151,681 at 6%.
Silicon Motion Inc. 401K Plan-19$3,517,543$345,833$18,202iApproximate average salary by contribution assumption: employee only about $455,043 at 4% or $303,362 at 6%; with 50% employer match about $303,362 at 4% or $202,242 at 6%; with 100% employer match about $227,522 at 4% or $151,681 at 6%.
2003164$3,372,127$423,711$6,620iApproximate average salary by contribution assumption: employee only about $165,512 at 4% or $110,341 at 6%; with 50% employer match about $110,341 at 4% or $73,561 at 6%; with 100% employer match about $82,756 at 4% or $55,171 at 6%.
Silicon Motion Inc. 401K Plan-64$3,372,127$423,711$6,620iApproximate average salary by contribution assumption: employee only about $165,512 at 4% or $110,341 at 6%; with 50% employer match about $110,341 at 4% or $73,561 at 6%; with 100% employer match about $82,756 at 4% or $55,171 at 6%.
2002161$2,378,817$468,988$7,688iApproximate average salary by contribution assumption: employee only about $192,208 at 4% or $128,139 at 6%; with 50% employer match about $128,139 at 4% or $85,426 at 6%; with 100% employer match about $96,104 at 4% or $64,069 at 6%.
Silicon Motion Inc. 401K Plan-61$2,378,817$468,988$7,688iApproximate average salary by contribution assumption: employee only about $192,208 at 4% or $128,139 at 6%; with 50% employer match about $128,139 at 4% or $85,426 at 6%; with 100% employer match about $96,104 at 4% or $64,069 at 6%.
2001375$2,740,215$872,512$11,633iApproximate average salary by contribution assumption: employee only about $290,837 at 4% or $193,892 at 6%; with 50% employer match about $193,892 at 4% or $129,261 at 6%; with 100% employer match about $145,419 at 4% or $96,946 at 6%.
Silicon Motion Inc. 401K Plan-70$2,740,215$872,512$12,464iApproximate average salary by contribution assumption: employee only about $311,611 at 4% or $207,741 at 6%; with 50% employer match about $207,741 at 4% or $138,494 at 6%; with 100% employer match about $155,806 at 4% or $103,870 at 6%.
SILICON MOTION HEALTH PLAN-75---
SILICON MOTION LIFE, DISABILITY, AND EAP PLAN-67---
20001111$2,478,483$666,418$6,004iApproximate average salary by contribution assumption: employee only about $150,094 at 4% or $100,063 at 6%; with 50% employer match about $100,063 at 4% or $66,709 at 6%; with 100% employer match about $75,047 at 4% or $50,031 at 6%.
Silicon Motion Inc. 401K Plan-111$2,478,483$666,418$6,004iApproximate average salary by contribution assumption: employee only about $150,094 at 4% or $100,063 at 6%; with 50% employer match about $100,063 at 4% or $66,709 at 6%; with 100% employer match about $75,047 at 4% or $50,031 at 6%.
1999175$2,337,005$153,201$2,043iApproximate average salary by contribution assumption: employee only about $51,067 at 4% or $34,045 at 6%; with 50% employer match about $34,045 at 4% or $22,696 at 6%; with 100% employer match about $25,534 at 4% or $17,022 at 6%.
Silicon Motion Inc. 401K Plan-75$2,337,005$153,201$2,043iApproximate average salary by contribution assumption: employee only about $51,067 at 4% or $34,045 at 6%; with 50% employer match about $34,045 at 4% or $22,696 at 6%; with 100% employer match about $25,534 at 4% or $17,022 at 6%.