Civic Intelligence

Cox Engineering Company

Plan context: Cox Engineering Company 401K Plan

EIN 04-2017923 • Randolph, MA • 67 filings • 9 plans

21 Pacella Park DrRandolph, MA 02368
Current Snapshot

Latest Year

2024

2024 Participants

290

2024 Assets

$32,830,216

2024 Contributions

$3,010,563

Historical Graphs

Total Assets Over Time

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

$32,830,216$16,415,108$0199920122024YearValue
$32,830,216Latest year 2024

Participants Over Time

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

3081540199920122024YearValue
290Latest 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
20243290$32,830,216$3,010,563$10,381iApproximate average salary by contribution assumption: employee only about $259,531 at 4% or $173,021 at 6%; with 50% employer match about $173,021 at 4% or $115,347 at 6%; with 100% employer match about $129,766 at 4% or $86,510 at 6%.
Cox Engineering Company 401K Plan-126$29,017,392$2,790,055$22,143iApproximate average salary by contribution assumption: employee only about $553,582 at 4% or $369,055 at 6%; with 50% employer match about $369,055 at 4% or $246,037 at 6%; with 100% employer match about $276,791 at 4% or $184,527 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-85$3,812,824$220,508$2,594iApproximate average salary by contribution assumption: employee only about $64,855 at 4% or $43,237 at 6%; with 50% employer match about $43,237 at 4% or $28,825 at 6%; with 100% employer match about $32,428 at 4% or $21,618 at 6%.
Cox Engineering Companies Welfare Benefits Plan-290---
20233308$26,367,025$2,421,893$7,863iApproximate average salary by contribution assumption: employee only about $196,582 at 4% or $131,055 at 6%; with 50% employer match about $131,055 at 4% or $87,370 at 6%; with 100% employer match about $98,291 at 4% or $65,527 at 6%.
Cox Engineering Company 401K Plan-154$22,822,038$2,173,414$14,113iApproximate average salary by contribution assumption: employee only about $352,827 at 4% or $235,218 at 6%; with 50% employer match about $235,218 at 4% or $156,812 at 6%; with 100% employer match about $176,413 at 4% or $117,609 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-84$3,544,987$248,479$2,958iApproximate average salary by contribution assumption: employee only about $73,952 at 4% or $49,301 at 6%; with 50% employer match about $49,301 at 4% or $32,868 at 6%; with 100% employer match about $36,976 at 4% or $24,651 at 6%.
Cox Engineering Companies Welfare Benefits Plan-308---
20223262$19,710,807$2,067,221$7,890iApproximate average salary by contribution assumption: employee only about $197,254 at 4% or $131,503 at 6%; with 50% employer match about $131,503 at 4% or $87,668 at 6%; with 100% employer match about $98,627 at 4% or $65,751 at 6%.
Cox Engineering Company 401K Plan-112$16,811,731$1,882,373$16,807iApproximate average salary by contribution assumption: employee only about $420,173 at 4% or $280,115 at 6%; with 50% employer match about $280,115 at 4% or $186,743 at 6%; with 100% employer match about $210,086 at 4% or $140,058 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-83$2,899,076$184,848$2,227iApproximate average salary by contribution assumption: employee only about $55,677 at 4% or $37,118 at 6%; with 50% employer match about $37,118 at 4% or $24,745 at 6%; with 100% employer match about $27,839 at 4% or $18,559 at 6%.
Cox Engineering Companies Welfare Benefits Plan-262---
20213262$22,554,474$1,436,549$5,483iApproximate average salary by contribution assumption: employee only about $137,075 at 4% or $91,384 at 6%; with 50% employer match about $91,384 at 4% or $60,922 at 6%; with 100% employer match about $68,538 at 4% or $45,692 at 6%.
Cox Engineering Company 401K Plan-121$19,513,269$1,305,302$10,788iApproximate average salary by contribution assumption: employee only about $269,690 at 4% or $179,794 at 6%; with 50% employer match about $179,794 at 4% or $119,862 at 6%; with 100% employer match about $134,845 at 4% or $89,897 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-81$3,041,205$131,247$1,620iApproximate average salary by contribution assumption: employee only about $40,508 at 4% or $27,006 at 6%; with 50% employer match about $27,006 at 4% or $18,004 at 6%; with 100% employer match about $20,254 at 4% or $13,503 at 6%.
Cox Engineering Companies Welfare Benefits Plan-262---
20203228$19,404,990$1,198,654$5,257iApproximate average salary by contribution assumption: employee only about $131,431 at 4% or $87,621 at 6%; with 50% employer match about $87,621 at 4% or $58,414 at 6%; with 100% employer match about $65,716 at 4% or $43,810 at 6%.
Cox Engineering Company 401K Plan-102$16,219,386$1,094,544$10,731iApproximate average salary by contribution assumption: employee only about $268,271 at 4% or $178,847 at 6%; with 50% employer match about $178,847 at 4% or $119,231 at 6%; with 100% employer match about $134,135 at 4% or $89,424 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-77$3,185,604$104,110$1,352iApproximate average salary by contribution assumption: employee only about $33,802 at 4% or $22,535 at 6%; with 50% employer match about $22,535 at 4% or $15,023 at 6%; with 100% employer match about $16,901 at 4% or $11,267 at 6%.
Cox Engineering Companies Welfare Benefits Plan-228---
20193219$15,057,503$843,685$3,852iApproximate average salary by contribution assumption: employee only about $96,311 at 4% or $64,207 at 6%; with 50% employer match about $64,207 at 4% or $42,805 at 6%; with 100% employer match about $48,156 at 4% or $32,104 at 6%.
Cox Engineering Company 401K Plan-89$12,568,080$743,286$8,352iApproximate average salary by contribution assumption: employee only about $208,788 at 4% or $139,192 at 6%; with 50% employer match about $139,192 at 4% or $92,795 at 6%; with 100% employer match about $104,394 at 4% or $69,596 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-76$2,489,423$100,399$1,321iApproximate average salary by contribution assumption: employee only about $33,026 at 4% or $22,017 at 6%; with 50% employer match about $22,017 at 4% or $14,678 at 6%; with 100% employer match about $16,513 at 4% or $11,009 at 6%.
Cox Engineering Companies Welfare Benefits Plan-219---
20183183$13,358,395$742,663$4,058iApproximate average salary by contribution assumption: employee only about $101,457 at 4% or $67,638 at 6%; with 50% employer match about $67,638 at 4% or $45,092 at 6%; with 100% employer match about $50,728 at 4% or $33,819 at 6%.
Cox Engineering Company 401K Plan-84$10,556,333$674,992$8,036iApproximate average salary by contribution assumption: employee only about $200,890 at 4% or $133,927 at 6%; with 50% employer match about $133,927 at 4% or $89,285 at 6%; with 100% employer match about $100,445 at 4% or $66,963 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-70$2,802,062$67,671$967iApproximate average salary by contribution assumption: employee only about $24,168 at 4% or $16,112 at 6%; with 50% employer match about $16,112 at 4% or $10,741 at 6%; with 100% employer match about $12,084 at 4% or $8,056 at 6%.
Cox Engineering Companies Welfare Benefits Plan-183---
20173149$14,255,424$1,211,660$8,132iApproximate average salary by contribution assumption: employee only about $203,299 at 4% or $135,532 at 6%; with 50% employer match about $135,532 at 4% or $90,355 at 6%; with 100% employer match about $101,649 at 4% or $67,766 at 6%.
Cox Engineering Company 401K Plan-77$11,667,013$1,148,990$14,922iApproximate average salary by contribution assumption: employee only about $373,049 at 4% or $248,699 at 6%; with 50% employer match about $248,699 at 4% or $165,799 at 6%; with 100% employer match about $186,524 at 4% or $124,350 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-61$2,588,411$62,670$1,027iApproximate average salary by contribution assumption: employee only about $25,684 at 4% or $17,123 at 6%; with 50% employer match about $17,123 at 4% or $11,415 at 6%; with 100% employer match about $12,842 at 4% or $8,561 at 6%.
Cox Engineering Companies Welfare Benefits Plan-149---
20163108$12,057,317$611,652$5,663iApproximate average salary by contribution assumption: employee only about $141,586 at 4% or $94,391 at 6%; with 50% employer match about $94,391 at 4% or $62,927 at 6%; with 100% employer match about $70,793 at 4% or $47,195 at 6%.
Cox Engineering Company 401K Plan-75$9,811,933$555,931$7,412iApproximate average salary by contribution assumption: employee only about $185,310 at 4% or $123,540 at 6%; with 50% employer match about $123,540 at 4% or $82,360 at 6%; with 100% employer match about $92,655 at 4% or $61,770 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-58$2,245,384$55,721$961iApproximate average salary by contribution assumption: employee only about $24,018 at 4% or $16,012 at 6%; with 50% employer match about $16,012 at 4% or $10,675 at 6%; with 100% employer match about $12,009 at 4% or $8,006 at 6%.
Cox Engineering Companies Welfare Benefits Plan-108---
20153110$11,076,092$649,192$5,902iApproximate average salary by contribution assumption: employee only about $147,544 at 4% or $98,362 at 6%; with 50% employer match about $98,362 at 4% or $65,575 at 6%; with 100% employer match about $73,772 at 4% or $49,181 at 6%.
Cox Engineering Company 401K Plan-72$9,104,910$593,284$8,240iApproximate average salary by contribution assumption: employee only about $206,001 at 4% or $137,334 at 6%; with 50% employer match about $137,334 at 4% or $91,556 at 6%; with 100% employer match about $103,001 at 4% or $68,667 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-56$1,971,182$55,908$998iApproximate average salary by contribution assumption: employee only about $24,959 at 4% or $16,639 at 6%; with 50% employer match about $16,639 at 4% or $11,093 at 6%; with 100% employer match about $12,479 at 4% or $8,320 at 6%.
Cox Engineering Companies Welfare Benefits Plan-110---
2014264$10,566,043$571,739$8,933iApproximate average salary by contribution assumption: employee only about $223,336 at 4% or $148,890 at 6%; with 50% employer match about $148,890 at 4% or $99,260 at 6%; with 100% employer match about $111,668 at 4% or $74,445 at 6%.
Cox Engineering Company 401K Plan-64$8,603,812$527,006$8,234iApproximate average salary by contribution assumption: employee only about $205,862 at 4% or $137,241 at 6%; with 50% employer match about $137,241 at 4% or $91,494 at 6%; with 100% employer match about $102,931 at 4% or $68,621 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-53$1,962,231$44,733$844iApproximate average salary by contribution assumption: employee only about $21,100 at 4% or $14,067 at 6%; with 50% employer match about $14,067 at 4% or $9,378 at 6%; with 100% employer match about $10,550 at 4% or $7,033 at 6%.
2013253$9,492,276$452,809$8,544iApproximate average salary by contribution assumption: employee only about $213,589 at 4% or $142,393 at 6%; with 50% employer match about $142,393 at 4% or $94,929 at 6%; with 100% employer match about $106,795 at 4% or $71,196 at 6%.
Cox Engineering Company 401K Plan-53$7,638,454$416,213$7,853iApproximate average salary by contribution assumption: employee only about $196,327 at 4% or $130,885 at 6%; with 50% employer match about $130,885 at 4% or $87,256 at 6%; with 100% employer match about $98,163 at 4% or $65,442 at 6%.
Cambridgeport Air Systems Union 401(K) Plan-51$1,853,822$36,596$718iApproximate average salary by contribution assumption: employee only about $17,939 at 4% or $11,959 at 6%; with 50% employer match about $11,959 at 4% or $7,973 at 6%; with 100% employer match about $8,970 at 4% or $5,980 at 6%.
2012256$7,486,090$400,822$7,158iApproximate average salary by contribution assumption: employee only about $178,938 at 4% or $119,292 at 6%; with 50% employer match about $119,292 at 4% or $79,528 at 6%; with 100% employer match about $89,469 at 4% or $59,646 at 6%.
Cox Engineering Company 401K Plan-56$5,868,456$348,760$6,228iApproximate average salary by contribution assumption: employee only about $155,696 at 4% or $103,798 at 6%; with 50% employer match about $103,798 at 4% or $69,198 at 6%; with 100% employer match about $77,848 at 4% or $51,899 at 6%.
Cox Engineering Company 401K Plan-53$1,617,634$52,062$982iApproximate average salary by contribution assumption: employee only about $24,558 at 4% or $16,372 at 6%; with 50% employer match about $16,372 at 4% or $10,914 at 6%; with 100% employer match about $12,279 at 4% or $8,186 at 6%.
2011271$7,449,490$319,362$4,498iApproximate average salary by contribution assumption: employee only about $112,451 at 4% or $74,968 at 6%; with 50% employer match about $74,968 at 4% or $49,978 at 6%; with 100% employer match about $56,226 at 4% or $37,484 at 6%.
Cox Engineering Company 401K Plan-57$5,659,604$244,573$4,291iApproximate average salary by contribution assumption: employee only about $107,269 at 4% or $71,513 at 6%; with 50% employer match about $71,513 at 4% or $47,675 at 6%; with 100% employer match about $53,634 at 4% or $35,756 at 6%.
Cox Engineering Company 401K Plan-71$1,789,886$74,789$1,053iApproximate average salary by contribution assumption: employee only about $26,334 at 4% or $17,556 at 6%; with 50% employer match about $17,556 at 4% or $11,704 at 6%; with 100% employer match about $13,167 at 4% or $8,778 at 6%.
20103108$8,059,671$394,390$3,652iApproximate average salary by contribution assumption: employee only about $91,294 at 4% or $60,863 at 6%; with 50% employer match about $60,863 at 4% or $40,575 at 6%; with 100% employer match about $45,647 at 4% or $30,431 at 6%.
Cox Engineering Company 401K Plan-59$6,406,987$312,040$5,289iApproximate average salary by contribution assumption: employee only about $132,220 at 4% or $88,147 at 6%; with 50% employer match about $88,147 at 4% or $58,765 at 6%; with 100% employer match about $66,110 at 4% or $44,073 at 6%.
Cox Engineering Company 401K Plan-63$1,652,684$82,350$1,307iApproximate average salary by contribution assumption: employee only about $32,679 at 4% or $21,786 at 6%; with 50% employer match about $21,786 at 4% or $14,524 at 6%; with 100% employer match about $16,339 at 4% or $10,893 at 6%.
Cox Engineering Companies Welfare Benefits Plan-108---
20093105$6,925,141$664,532$6,329iApproximate average salary by contribution assumption: employee only about $158,222 at 4% or $105,481 at 6%; with 50% employer match about $105,481 at 4% or $70,321 at 6%; with 100% employer match about $79,111 at 4% or $52,741 at 6%.
Cox Engineering Company 401K Plan-64$5,453,999$562,702$8,792iApproximate average salary by contribution assumption: employee only about $219,805 at 4% or $146,537 at 6%; with 50% employer match about $146,537 at 4% or $97,691 at 6%; with 100% employer match about $109,903 at 4% or $73,268 at 6%.
Cox Engineering Company 401K Plan-75$1,471,142$101,830$1,358iApproximate average salary by contribution assumption: employee only about $33,943 at 4% or $22,629 at 6%; with 50% employer match about $22,629 at 4% or $15,086 at 6%; with 100% employer match about $16,972 at 4% or $11,314 at 6%.
Cox Engineering Companies Welfare Benefits Plan-105---
20083125$4,264,072$410,630$3,285iApproximate average salary by contribution assumption: employee only about $82,126 at 4% or $54,751 at 6%; with 50% employer match about $54,751 at 4% or $36,500 at 6%; with 100% employer match about $41,063 at 4% or $27,375 at 6%.
Cox Engineering Company 401K Plan-49$4,264,072$410,630$8,380iApproximate average salary by contribution assumption: employee only about $209,505 at 4% or $139,670 at 6%; with 50% employer match about $139,670 at 4% or $93,113 at 6%; with 100% employer match about $104,753 at 4% or $69,835 at 6%.
Cox Engineering Company 401K Plan-52---
Cox Engineering Companies Welfare Benefits Plan-125---
20073122$5,937,711$413,036$3,386iApproximate average salary by contribution assumption: employee only about $84,639 at 4% or $56,426 at 6%; with 50% employer match about $56,426 at 4% or $37,617 at 6%; with 100% employer match about $42,319 at 4% or $28,213 at 6%.
Cox Engineering Company 401K Plan-50$5,937,711$413,036$8,261iApproximate average salary by contribution assumption: employee only about $206,518 at 4% or $137,679 at 6%; with 50% employer match about $137,679 at 4% or $91,786 at 6%; with 100% employer match about $103,259 at 4% or $68,839 at 6%.
Cox Engineering Companies Welfare Benefits Plan-122---
Cox Engineering Company 401K Plan-75---
2006271$7,322,214$531,110$7,480iApproximate average salary by contribution assumption: employee only about $187,011 at 4% or $124,674 at 6%; with 50% employer match about $124,674 at 4% or $83,116 at 6%; with 100% employer match about $93,505 at 4% or $62,337 at 6%.
Cox Engineering Company 401K Plan-42$6,044,010$390,371$9,295iApproximate average salary by contribution assumption: employee only about $232,364 at 4% or $154,909 at 6%; with 50% employer match about $154,909 at 4% or $103,273 at 6%; with 100% employer match about $116,182 at 4% or $77,455 at 6%.
Cox Engineering Company 401K Plan-71$1,278,204$140,739$1,982iApproximate average salary by contribution assumption: employee only about $49,556 at 4% or $33,037 at 6%; with 50% employer match about $33,037 at 4% or $22,025 at 6%; with 100% employer match about $24,778 at 4% or $16,519 at 6%.
20053117$6,429,197$513,932$4,393iApproximate average salary by contribution assumption: employee only about $109,815 at 4% or $73,210 at 6%; with 50% employer match about $73,210 at 4% or $48,806 at 6%; with 100% employer match about $54,907 at 4% or $36,605 at 6%.
Cox Engineering Company 401K Plan-44$5,305,146$347,430$7,896iApproximate average salary by contribution assumption: employee only about $197,403 at 4% or $131,602 at 6%; with 50% employer match about $131,602 at 4% or $87,735 at 6%; with 100% employer match about $98,702 at 4% or $65,801 at 6%.
Cox Engineering Company 401K Plan-65$1,124,051$166,502$2,562iApproximate average salary by contribution assumption: employee only about $64,039 at 4% or $42,693 at 6%; with 50% employer match about $42,693 at 4% or $28,462 at 6%; with 100% employer match about $32,020 at 4% or $21,346 at 6%.
Cox Engineering Companies Welfare Benefits Plan-117---
20043121$5,934,836$571,091$4,720iApproximate average salary by contribution assumption: employee only about $117,994 at 4% or $78,663 at 6%; with 50% employer match about $78,663 at 4% or $52,442 at 6%; with 100% employer match about $58,997 at 4% or $39,331 at 6%.
Cox Engineering Company 401K Plan-54$4,962,089$390,391$7,229iApproximate average salary by contribution assumption: employee only about $180,737 at 4% or $120,491 at 6%; with 50% employer match about $120,491 at 4% or $80,327 at 6%; with 100% employer match about $90,368 at 4% or $60,246 at 6%.
Cox Engineering Company 401K Plan-69$972,747$180,700$2,619iApproximate average salary by contribution assumption: employee only about $65,471 at 4% or $43,647 at 6%; with 50% employer match about $43,647 at 4% or $29,098 at 6%; with 100% employer match about $32,736 at 4% or $21,824 at 6%.
Cox Engineering Companies Welfare Benefits Plan-121---
2003286$5,051,285$532,770$6,195iApproximate average salary by contribution assumption: employee only about $154,875 at 4% or $103,250 at 6%; with 50% employer match about $103,250 at 4% or $68,833 at 6%; with 100% employer match about $77,438 at 4% or $51,625 at 6%.
Cox Engineering Company 401K Plan-54$4,193,665$351,385$6,507iApproximate average salary by contribution assumption: employee only about $162,678 at 4% or $108,452 at 6%; with 50% employer match about $108,452 at 4% or $72,301 at 6%; with 100% employer match about $81,339 at 4% or $54,226 at 6%.
Cox Engineering Company 401K Plan-86$857,620$181,385$2,109iApproximate average salary by contribution assumption: employee only about $52,728 at 4% or $35,152 at 6%; with 50% employer match about $35,152 at 4% or $23,435 at 6%; with 100% employer match about $26,364 at 4% or $17,576 at 6%.
2002298$3,850,675$704,712$7,191iApproximate average salary by contribution assumption: employee only about $179,773 at 4% or $119,849 at 6%; with 50% employer match about $119,849 at 4% or $79,899 at 6%; with 100% employer match about $89,887 at 4% or $59,924 at 6%.
Cox Engineering Company 401K Plan-0$3,222,109$522,081-
Cox Engineering Company 401K Plan-98$628,566$182,631$1,864iApproximate average salary by contribution assumption: employee only about $46,590 at 4% or $31,060 at 6%; with 50% employer match about $31,060 at 4% or $20,706 at 6%; with 100% employer match about $23,295 at 4% or $15,530 at 6%.
20012109$0$0-
Cox Engineering Company 401K Plan-53---
Cox Engineering Company 401K Plan-109---
2000282$3,327,143$239,377$2,919iApproximate average salary by contribution assumption: employee only about $72,981 at 4% or $48,654 at 6%; with 50% employer match about $48,654 at 4% or $32,436 at 6%; with 100% employer match about $36,490 at 4% or $24,327 at 6%.
Cox Engineering Company 401K Plan-41$3,327,143$239,377$5,838iApproximate average salary by contribution assumption: employee only about $145,962 at 4% or $97,308 at 6%; with 50% employer match about $97,308 at 4% or $64,872 at 6%; with 100% employer match about $72,981 at 4% or $48,654 at 6%.
Cox Engineering Company 401K Plan-82---
1999143$3,931,535$330,473$7,685iApproximate average salary by contribution assumption: employee only about $192,135 at 4% or $128,090 at 6%; with 50% employer match about $128,090 at 4% or $85,394 at 6%; with 100% employer match about $96,068 at 4% or $64,045 at 6%.
Cox Engineering Company 401K Plan-43$3,931,535$330,473$7,685iApproximate average salary by contribution assumption: employee only about $192,135 at 4% or $128,090 at 6%; with 50% employer match about $128,090 at 4% or $85,394 at 6%; with 100% employer match about $96,068 at 4% or $64,045 at 6%.