Civic Intelligence

Alpha & Omega Semiconductor Inc.

Plan context: Alpha & Omega Semiconductor Inc. 401(K) Plan

EIN 77-0553536 • Sunnyvale, CA • 39 filings • 4 plans

475 Oakmead PkwySunnyvale, CA 94085
Current Snapshot

Latest Year

2024

2024 Participants

768

2024 Assets

$105,314,741

2024 Contributions

$13,989,471

Historical Graphs

Total Assets Over Time

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

$105,314,741$52,657,371$0200420142024YearValue
$105,314,741Latest year 2024

Participants Over Time

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

7903950200420142024YearValue
768Latest year 2024

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
20242768$105,314,741$13,989,471$18,215iApproximate average salary by contribution assumption: employee only about $455,386 at 4% or $303,591 at 6%; with 50% employer match about $303,591 at 4% or $202,394 at 6%; with 100% employer match about $227,693 at 4% or $151,795 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-741$105,314,741$13,989,471$18,879iApproximate average salary by contribution assumption: employee only about $471,979 at 4% or $314,653 at 6%; with 50% employer match about $314,653 at 4% or $209,769 at 6%; with 100% employer match about $235,990 at 4% or $157,326 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-768---
20232769$82,987,263$12,236,602$15,912iApproximate average salary by contribution assumption: employee only about $397,809 at 4% or $265,206 at 6%; with 50% employer match about $265,206 at 4% or $176,804 at 6%; with 100% employer match about $198,904 at 4% or $132,603 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-769$82,987,263$12,236,602$15,912iApproximate average salary by contribution assumption: employee only about $397,809 at 4% or $265,206 at 6%; with 50% employer match about $265,206 at 4% or $176,804 at 6%; with 100% employer match about $198,904 at 4% or $132,603 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-769---
20222790$63,636,635$10,845,297$13,728iApproximate average salary by contribution assumption: employee only about $343,206 at 4% or $228,804 at 6%; with 50% employer match about $228,804 at 4% or $152,536 at 6%; with 100% employer match about $171,603 at 4% or $114,402 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-790$63,636,635$10,845,297$13,728iApproximate average salary by contribution assumption: employee only about $343,206 at 4% or $228,804 at 6%; with 50% employer match about $228,804 at 4% or $152,536 at 6%; with 100% employer match about $171,603 at 4% or $114,402 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-764---
20212656$66,387,874$7,969,352$12,148iApproximate average salary by contribution assumption: employee only about $303,710 at 4% or $202,473 at 6%; with 50% employer match about $202,473 at 4% or $134,982 at 6%; with 100% employer match about $151,855 at 4% or $101,237 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-656$66,387,874$7,969,352$12,148iApproximate average salary by contribution assumption: employee only about $303,710 at 4% or $202,473 at 6%; with 50% employer match about $202,473 at 4% or $134,982 at 6%; with 100% employer match about $151,855 at 4% or $101,237 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-644---
20202662$54,809,518$6,946,095$10,493iApproximate average salary by contribution assumption: employee only about $262,315 at 4% or $174,877 at 6%; with 50% employer match about $174,877 at 4% or $116,584 at 6%; with 100% employer match about $131,157 at 4% or $87,438 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-662$54,809,518$6,946,095$10,493iApproximate average salary by contribution assumption: employee only about $262,315 at 4% or $174,877 at 6%; with 50% employer match about $174,877 at 4% or $116,584 at 6%; with 100% employer match about $131,157 at 4% or $87,438 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-661---
20192678$42,184,332$5,540,776$8,172iApproximate average salary by contribution assumption: employee only about $204,306 at 4% or $136,204 at 6%; with 50% employer match about $136,204 at 4% or $90,803 at 6%; with 100% employer match about $102,153 at 4% or $68,102 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-678$42,184,332$5,540,776$8,172iApproximate average salary by contribution assumption: employee only about $204,306 at 4% or $136,204 at 6%; with 50% employer match about $136,204 at 4% or $90,803 at 6%; with 100% employer match about $102,153 at 4% or $68,102 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-555---
20182640$30,989,247$4,914,067$7,678iApproximate average salary by contribution assumption: employee only about $191,956 at 4% or $127,970 at 6%; with 50% employer match about $127,970 at 4% or $85,314 at 6%; with 100% employer match about $95,978 at 4% or $63,985 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-640$30,989,247$4,914,067$7,678iApproximate average salary by contribution assumption: employee only about $191,956 at 4% or $127,970 at 6%; with 50% employer match about $127,970 at 4% or $85,314 at 6%; with 100% employer match about $95,978 at 4% or $63,985 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-636---
20172526$29,833,329$5,195,657$9,878iApproximate average salary by contribution assumption: employee only about $246,942 at 4% or $164,628 at 6%; with 50% employer match about $164,628 at 4% or $109,752 at 6%; with 100% employer match about $123,471 at 4% or $82,314 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-526$29,833,329$5,195,657$9,878iApproximate average salary by contribution assumption: employee only about $246,942 at 4% or $164,628 at 6%; with 50% employer match about $164,628 at 4% or $109,752 at 6%; with 100% employer match about $123,471 at 4% or $82,314 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-516---
20162411$22,079,747$3,574,152$8,696iApproximate average salary by contribution assumption: employee only about $217,406 at 4% or $144,937 at 6%; with 50% employer match about $144,937 at 4% or $96,625 at 6%; with 100% employer match about $108,703 at 4% or $72,469 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-411$22,079,747$3,574,152$8,696iApproximate average salary by contribution assumption: employee only about $217,406 at 4% or $144,937 at 6%; with 50% employer match about $144,937 at 4% or $96,625 at 6%; with 100% employer match about $108,703 at 4% or $72,469 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-411---
20152359$18,068,964$3,327,304$9,268iApproximate average salary by contribution assumption: employee only about $231,706 at 4% or $154,471 at 6%; with 50% employer match about $154,471 at 4% or $102,981 at 6%; with 100% employer match about $115,853 at 4% or $77,235 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-359$18,068,964$3,327,304$9,268iApproximate average salary by contribution assumption: employee only about $231,706 at 4% or $154,471 at 6%; with 50% employer match about $154,471 at 4% or $102,981 at 6%; with 100% employer match about $115,853 at 4% or $77,235 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-357---
20142366$16,742,838$4,480,338$12,241iApproximate average salary by contribution assumption: employee only about $306,034 at 4% or $204,023 at 6%; with 50% employer match about $204,023 at 4% or $136,015 at 6%; with 100% employer match about $153,017 at 4% or $102,011 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-366$16,742,838$4,480,338$12,241iApproximate average salary by contribution assumption: employee only about $306,034 at 4% or $204,023 at 6%; with 50% employer match about $204,023 at 4% or $136,015 at 6%; with 100% employer match about $153,017 at 4% or $102,011 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-357---
20132353$13,128,481$2,947,393$8,350iApproximate average salary by contribution assumption: employee only about $208,739 at 4% or $139,159 at 6%; with 50% employer match about $139,159 at 4% or $92,773 at 6%; with 100% employer match about $104,369 at 4% or $69,580 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-352$13,128,481$2,947,393$8,373iApproximate average salary by contribution assumption: employee only about $209,332 at 4% or $139,555 at 6%; with 50% employer match about $139,555 at 4% or $93,036 at 6%; with 100% employer match about $104,666 at 4% or $69,777 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-353---
20122370$10,097,007$2,845,341$7,690iApproximate average salary by contribution assumption: employee only about $192,253 at 4% or $128,169 at 6%; with 50% employer match about $128,169 at 4% or $85,446 at 6%; with 100% employer match about $96,126 at 4% or $64,084 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-370$10,097,007$2,845,341$7,690iApproximate average salary by contribution assumption: employee only about $192,253 at 4% or $128,169 at 6%; with 50% employer match about $128,169 at 4% or $85,446 at 6%; with 100% employer match about $96,126 at 4% or $64,084 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-361---
20112135$6,885,295$1,317,196$9,757iApproximate average salary by contribution assumption: employee only about $243,925 at 4% or $162,617 at 6%; with 50% employer match about $162,617 at 4% or $108,411 at 6%; with 100% employer match about $121,963 at 4% or $81,308 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-135$6,885,295$1,317,196$9,757iApproximate average salary by contribution assumption: employee only about $243,925 at 4% or $162,617 at 6%; with 50% employer match about $162,617 at 4% or $108,411 at 6%; with 100% employer match about $121,963 at 4% or $81,308 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-106---
20102121$6,314,965$1,106,880$9,148iApproximate average salary by contribution assumption: employee only about $228,694 at 4% or $152,463 at 6%; with 50% employer match about $152,463 at 4% or $101,642 at 6%; with 100% employer match about $114,347 at 4% or $76,231 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-109$6,314,965$1,106,880$10,155iApproximate average salary by contribution assumption: employee only about $253,872 at 4% or $169,248 at 6%; with 50% employer match about $169,248 at 4% or $112,832 at 6%; with 100% employer match about $126,936 at 4% or $84,624 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-121---
20092111$4,607,423$1,001,999$9,027iApproximate average salary by contribution assumption: employee only about $225,675 at 4% or $150,450 at 6%; with 50% employer match about $150,450 at 4% or $100,300 at 6%; with 100% employer match about $112,838 at 4% or $75,225 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-111$4,607,423$1,001,999$9,027iApproximate average salary by contribution assumption: employee only about $225,675 at 4% or $150,450 at 6%; with 50% employer match about $150,450 at 4% or $100,300 at 6%; with 100% employer match about $112,838 at 4% or $75,225 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-----
20081120$2,817,512$1,064,540$8,871iApproximate average salary by contribution assumption: employee only about $221,779 at 4% or $147,853 at 6%; with 50% employer match about $147,853 at 4% or $98,569 at 6%; with 100% employer match about $110,890 at 4% or $73,926 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-120$2,817,512$1,064,540$8,871iApproximate average salary by contribution assumption: employee only about $221,779 at 4% or $147,853 at 6%; with 50% employer match about $147,853 at 4% or $98,569 at 6%; with 100% employer match about $110,890 at 4% or $73,926 at 6%.
20072327$3,762,532$1,066,919$3,263iApproximate average salary by contribution assumption: employee only about $81,569 at 4% or $54,379 at 6%; with 50% employer match about $54,379 at 4% or $36,253 at 6%; with 100% employer match about $40,784 at 4% or $27,190 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-101$3,762,532$1,066,919$10,564iApproximate average salary by contribution assumption: employee only about $264,089 at 4% or $176,059 at 6%; with 50% employer match about $176,059 at 4% or $117,373 at 6%; with 100% employer match about $132,044 at 4% or $88,030 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-327---
20062312$2,484,050$1,273,836$4,083iApproximate average salary by contribution assumption: employee only about $102,070 at 4% or $68,047 at 6%; with 50% employer match about $68,047 at 4% or $45,365 at 6%; with 100% employer match about $51,035 at 4% or $34,023 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-87$2,484,050$1,273,836$14,642iApproximate average salary by contribution assumption: employee only about $366,045 at 4% or $244,030 at 6%; with 50% employer match about $244,030 at 4% or $162,687 at 6%; with 100% employer match about $183,022 at 4% or $122,015 at 6%.
Alpha & Omega Semiconductor Inc. Welfare Benefit Plan-312---
2005174$1,026,046$951,841$12,863iApproximate average salary by contribution assumption: employee only about $321,568 at 4% or $214,379 at 6%; with 50% employer match about $214,379 at 4% or $142,919 at 6%; with 100% employer match about $160,784 at 4% or $107,189 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-74$1,026,046$951,841$12,863iApproximate average salary by contribution assumption: employee only about $321,568 at 4% or $214,379 at 6%; with 50% employer match about $214,379 at 4% or $142,919 at 6%; with 100% employer match about $160,784 at 4% or $107,189 at 6%.
2004147$7,768$7,768$165iApproximate average salary by contribution assumption: employee only about $4,132 at 4% or $2,755 at 6%; with 50% employer match about $2,755 at 4% or $1,836 at 6%; with 100% employer match about $2,066 at 4% or $1,377 at 6%.
Alpha & Omega Semiconductor Inc. 401(K) Plan-47$7,768$7,768$165iApproximate average salary by contribution assumption: employee only about $4,132 at 4% or $2,755 at 6%; with 50% employer match about $2,755 at 4% or $1,836 at 6%; with 100% employer match about $2,066 at 4% or $1,377 at 6%.