Civic Intelligence

KEYSTONE PLASTICS

Plan context: Keystone Plastics Inc. 401(K) Plan

EIN 22-1476437 • South Plainfield, NJ • 57 filings • 7 plans

3451 S Clinton AveSouth Plainfield, NJ 07080-1303
Current Snapshot

Latest Year

2025

2025 Participants

147

2025 Assets

$4,986,268

2025 Contributions

$630,725

Historical Graphs

Total Assets Over Time

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

$4,986,268$2,493,134$0199920122024YearValue
$4,986,268Latest year 2024

Participants Over Time

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

147740199920122025YearValue
147Latest 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
20251147$0$0-
Keystone Plastics Health and Welfare Plan-147---
20243146$4,986,268$630,725$4,320iApproximate average salary by contribution assumption: employee only about $108,001 at 4% or $72,001 at 6%; with 50% employer match about $72,001 at 4% or $48,000 at 6%; with 100% employer match about $54,000 at 4% or $36,000 at 6%.
Keystone Plastics Inc. 401(K) Plan-29$4,608,678$579,169$19,971iApproximate average salary by contribution assumption: employee only about $499,284 at 4% or $332,856 at 6%; with 50% employer match about $332,856 at 4% or $221,904 at 6%; with 100% employer match about $249,642 at 4% or $166,428 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-25$377,590$51,556$2,062iApproximate average salary by contribution assumption: employee only about $51,556 at 4% or $34,371 at 6%; with 50% employer match about $34,371 at 4% or $22,914 at 6%; with 100% employer match about $25,778 at 4% or $17,185 at 6%.
Keystone Plastics Health and Welfare Plan-146---
20233138$4,283,002$512,025$3,710iApproximate average salary by contribution assumption: employee only about $92,758 at 4% or $61,839 at 6%; with 50% employer match about $61,839 at 4% or $41,226 at 6%; with 100% employer match about $46,379 at 4% or $30,919 at 6%.
Keystone Plastics Inc. 401(K) Plan-25$3,908,736$482,771$19,311iApproximate average salary by contribution assumption: employee only about $482,771 at 4% or $321,847 at 6%; with 50% employer match about $321,847 at 4% or $214,565 at 6%; with 100% employer match about $241,386 at 4% or $160,924 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-22$374,266$29,254$1,330iApproximate average salary by contribution assumption: employee only about $33,243 at 4% or $22,162 at 6%; with 50% employer match about $22,162 at 4% or $14,775 at 6%; with 100% employer match about $16,622 at 4% or $11,081 at 6%.
Keystone Plastics Health and Welfare Plan-138---
20223132$4,057,070$644,254$4,881iApproximate average salary by contribution assumption: employee only about $122,018 at 4% or $81,345 at 6%; with 50% employer match about $81,345 at 4% or $54,230 at 6%; with 100% employer match about $61,009 at 4% or $40,673 at 6%.
Keystone Plastics Inc. 401(K) Plan-26$3,744,292$611,560$23,522iApproximate average salary by contribution assumption: employee only about $588,038 at 4% or $392,026 at 6%; with 50% employer match about $392,026 at 4% or $261,350 at 6%; with 100% employer match about $294,019 at 4% or $196,013 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-23$312,778$32,694$1,421iApproximate average salary by contribution assumption: employee only about $35,537 at 4% or $23,691 at 6%; with 50% employer match about $23,691 at 4% or $15,794 at 6%; with 100% employer match about $17,768 at 4% or $11,846 at 6%.
Keystone Plastics Health and Welfare Plan-132---
20213132$4,709,916$496,414$3,761iApproximate average salary by contribution assumption: employee only about $94,018 at 4% or $62,679 at 6%; with 50% employer match about $62,679 at 4% or $41,786 at 6%; with 100% employer match about $47,009 at 4% or $31,339 at 6%.
Keystone Plastics Inc. 401(K) Plan-25$4,331,951$444,483$17,779iApproximate average salary by contribution assumption: employee only about $444,483 at 4% or $296,322 at 6%; with 50% employer match about $296,322 at 4% or $197,548 at 6%; with 100% employer match about $222,242 at 4% or $148,161 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-25$377,965$51,931$2,077iApproximate average salary by contribution assumption: employee only about $51,931 at 4% or $34,621 at 6%; with 50% employer match about $34,621 at 4% or $23,080 at 6%; with 100% employer match about $25,965 at 4% or $17,310 at 6%.
Keystone Plastics Health and Welfare Plan-132---
20203125$4,494,637$462,653$3,701iApproximate average salary by contribution assumption: employee only about $92,531 at 4% or $61,687 at 6%; with 50% employer match about $61,687 at 4% or $41,125 at 6%; with 100% employer match about $46,265 at 4% or $30,844 at 6%.
Keystone Plastics Inc. 401(K) Plan-25$4,203,302$414,200$16,568iApproximate average salary by contribution assumption: employee only about $414,200 at 4% or $276,133 at 6%; with 50% employer match about $276,133 at 4% or $184,089 at 6%; with 100% employer match about $207,100 at 4% or $138,067 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-24$291,335$48,453$2,019iApproximate average salary by contribution assumption: employee only about $50,472 at 4% or $33,648 at 6%; with 50% employer match about $33,648 at 4% or $22,432 at 6%; with 100% employer match about $25,236 at 4% or $16,824 at 6%.
Keystone Plastics Health and Welfare Plan-125---
2019225$3,848,724$473,467$18,939iApproximate average salary by contribution assumption: employee only about $473,467 at 4% or $315,645 at 6%; with 50% employer match about $315,645 at 4% or $210,430 at 6%; with 100% employer match about $236,734 at 4% or $157,822 at 6%.
Keystone Plastics Inc. 401(K) Plan-25$3,608,544$416,525$16,661iApproximate average salary by contribution assumption: employee only about $416,525 at 4% or $277,683 at 6%; with 50% employer match about $277,683 at 4% or $185,122 at 6%; with 100% employer match about $208,263 at 4% or $138,842 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-22$240,180$56,942$2,588iApproximate average salary by contribution assumption: employee only about $64,707 at 4% or $43,138 at 6%; with 50% employer match about $43,138 at 4% or $28,759 at 6%; with 100% employer match about $32,353 at 4% or $21,569 at 6%.
2018225$2,993,208$395,359$15,814iApproximate average salary by contribution assumption: employee only about $395,359 at 4% or $263,573 at 6%; with 50% employer match about $263,573 at 4% or $175,715 at 6%; with 100% employer match about $197,680 at 4% or $131,786 at 6%.
Keystone Plastics Inc. 401(K) Plan-21$2,812,870$353,572$16,837iApproximate average salary by contribution assumption: employee only about $420,919 at 4% or $280,613 at 6%; with 50% employer match about $280,613 at 4% or $187,075 at 6%; with 100% employer match about $210,460 at 4% or $140,306 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-25$180,338$41,787$1,671iApproximate average salary by contribution assumption: employee only about $41,787 at 4% or $27,858 at 6%; with 50% employer match about $27,858 at 4% or $18,572 at 6%; with 100% employer match about $20,894 at 4% or $13,929 at 6%.
2017225$3,424,109$432,939$17,318iApproximate average salary by contribution assumption: employee only about $432,939 at 4% or $288,626 at 6%; with 50% employer match about $288,626 at 4% or $192,417 at 6%; with 100% employer match about $216,470 at 4% or $144,313 at 6%.
Keystone Plastics Inc. 401(K) Plan-24$3,279,298$387,277$16,137iApproximate average salary by contribution assumption: employee only about $403,414 at 4% or $268,942 at 6%; with 50% employer match about $268,942 at 4% or $179,295 at 6%; with 100% employer match about $201,707 at 4% or $134,471 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-25$144,811$45,662$1,826iApproximate average salary by contribution assumption: employee only about $45,662 at 4% or $30,441 at 6%; with 50% employer match about $30,441 at 4% or $20,294 at 6%; with 100% employer match about $22,831 at 4% or $15,221 at 6%.
2016223$2,761,533$351,212$15,270iApproximate average salary by contribution assumption: employee only about $381,752 at 4% or $254,501 at 6%; with 50% employer match about $254,501 at 4% or $169,668 at 6%; with 100% employer match about $190,876 at 4% or $127,251 at 6%.
Keystone Plastics Inc. 401(K) Plan-23$2,662,944$324,122$14,092iApproximate average salary by contribution assumption: employee only about $352,307 at 4% or $234,871 at 6%; with 50% employer match about $234,871 at 4% or $156,581 at 6%; with 100% employer match about $176,153 at 4% or $117,436 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-23$98,589$27,090$1,178iApproximate average salary by contribution assumption: employee only about $29,446 at 4% or $19,630 at 6%; with 50% employer match about $19,630 at 4% or $13,087 at 6%; with 100% employer match about $14,723 at 4% or $9,815 at 6%.
2015222$2,382,198$323,112$14,687iApproximate average salary by contribution assumption: employee only about $367,173 at 4% or $244,782 at 6%; with 50% employer match about $244,782 at 4% or $163,188 at 6%; with 100% employer match about $183,586 at 4% or $122,391 at 6%.
Keystone Plastics Inc. 401(K) Plan-22$2,295,389$311,782$14,172iApproximate average salary by contribution assumption: employee only about $354,298 at 4% or $236,198 at 6%; with 50% employer match about $236,198 at 4% or $157,466 at 6%; with 100% employer match about $177,149 at 4% or $118,099 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-12$86,809$11,330$944iApproximate average salary by contribution assumption: employee only about $23,604 at 4% or $15,736 at 6%; with 50% employer match about $15,736 at 4% or $10,491 at 6%; with 100% employer match about $11,802 at 4% or $7,868 at 6%.
2014222$2,185,813$276,813$12,582iApproximate average salary by contribution assumption: employee only about $314,560 at 4% or $209,707 at 6%; with 50% employer match about $209,707 at 4% or $139,805 at 6%; with 100% employer match about $157,280 at 4% or $104,853 at 6%.
Keystone Plastics Inc. 401(K) Plan-22$2,110,795$270,788$12,309iApproximate average salary by contribution assumption: employee only about $307,714 at 4% or $205,142 at 6%; with 50% employer match about $205,142 at 4% or $136,762 at 6%; with 100% employer match about $153,857 at 4% or $102,571 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-9$75,018$6,025$669iApproximate average salary by contribution assumption: employee only about $16,736 at 4% or $11,157 at 6%; with 50% employer match about $11,157 at 4% or $7,438 at 6%; with 100% employer match about $8,368 at 4% or $5,579 at 6%.
2013221$1,934,728$266,640$12,697iApproximate average salary by contribution assumption: employee only about $317,429 at 4% or $211,619 at 6%; with 50% employer match about $211,619 at 4% or $141,079 at 6%; with 100% employer match about $158,714 at 4% or $105,810 at 6%.
Keystone Plastics Inc. 401(K) Plan-21$1,866,912$260,945$12,426iApproximate average salary by contribution assumption: employee only about $310,649 at 4% or $207,099 at 6%; with 50% employer match about $207,099 at 4% or $138,066 at 6%; with 100% employer match about $155,324 at 4% or $103,550 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-7$67,816$5,695$814iApproximate average salary by contribution assumption: employee only about $20,339 at 4% or $13,560 at 6%; with 50% employer match about $13,560 at 4% or $9,040 at 6%; with 100% employer match about $10,170 at 4% or $6,780 at 6%.
2012223$1,667,140$290,509$12,631iApproximate average salary by contribution assumption: employee only about $315,771 at 4% or $210,514 at 6%; with 50% employer match about $210,514 at 4% or $140,343 at 6%; with 100% employer match about $157,885 at 4% or $105,257 at 6%.
Keystone Plastics Inc. 401(K) Plan-23$1,607,272$286,644$12,463iApproximate average salary by contribution assumption: employee only about $311,570 at 4% or $207,713 at 6%; with 50% employer match about $207,713 at 4% or $138,475 at 6%; with 100% employer match about $155,785 at 4% or $103,857 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-5$59,868$3,865$773iApproximate average salary by contribution assumption: employee only about $19,325 at 4% or $12,883 at 6%; with 50% employer match about $12,883 at 4% or $8,589 at 6%; with 100% employer match about $9,663 at 4% or $6,442 at 6%.
2011222$1,835,684$249,109$11,323iApproximate average salary by contribution assumption: employee only about $283,078 at 4% or $188,719 at 6%; with 50% employer match about $188,719 at 4% or $125,813 at 6%; with 100% employer match about $141,539 at 4% or $94,359 at 6%.
Keystone Plastics Inc. 401(K) Plan-22$1,715,300$243,198$11,054iApproximate average salary by contribution assumption: employee only about $276,361 at 4% or $184,241 at 6%; with 50% employer match about $184,241 at 4% or $122,827 at 6%; with 100% employer match about $138,181 at 4% or $92,120 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-7$120,384$5,911$844iApproximate average salary by contribution assumption: employee only about $21,111 at 4% or $14,074 at 6%; with 50% employer match about $14,074 at 4% or $9,383 at 6%; with 100% employer match about $10,555 at 4% or $7,037 at 6%.
2010218$1,625,029$223,505$12,417iApproximate average salary by contribution assumption: employee only about $310,424 at 4% or $206,949 at 6%; with 50% employer match about $206,949 at 4% or $137,966 at 6%; with 100% employer match about $155,212 at 4% or $103,475 at 6%.
Keystone Plastics Inc. 401(K) Plan-18$1,487,922$214,859$11,937iApproximate average salary by contribution assumption: employee only about $298,415 at 4% or $198,944 at 6%; with 50% employer match about $198,944 at 4% or $132,629 at 6%; with 100% employer match about $149,208 at 4% or $99,472 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-10$137,107$8,646$865iApproximate average salary by contribution assumption: employee only about $21,615 at 4% or $14,410 at 6%; with 50% employer match about $14,410 at 4% or $9,607 at 6%; with 100% employer match about $10,808 at 4% or $7,205 at 6%.
2009219$1,551,585$225,435$11,865iApproximate average salary by contribution assumption: employee only about $296,625 at 4% or $197,750 at 6%; with 50% employer match about $197,750 at 4% or $131,833 at 6%; with 100% employer match about $148,313 at 4% or $98,875 at 6%.
Keystone Plastics Inc. 401(K) Plan-19$1,422,926$216,837$11,412iApproximate average salary by contribution assumption: employee only about $285,312 at 4% or $190,208 at 6%; with 50% employer match about $190,208 at 4% or $126,805 at 6%; with 100% employer match about $142,656 at 4% or $95,104 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-11$128,659$8,598$782iApproximate average salary by contribution assumption: employee only about $19,541 at 4% or $13,027 at 6%; with 50% employer match about $13,027 at 4% or $8,685 at 6%; with 100% employer match about $9,770 at 4% or $6,514 at 6%.
2008265$1,269,903$158,728$2,442iApproximate average salary by contribution assumption: employee only about $61,049 at 4% or $40,699 at 6%; with 50% employer match about $40,699 at 4% or $27,133 at 6%; with 100% employer match about $30,525 at 4% or $20,350 at 6%.
Keystone Plastics Inc. 401(K) Plan-16$1,149,208$146,658$9,166iApproximate average salary by contribution assumption: employee only about $229,153 at 4% or $152,769 at 6%; with 50% employer match about $152,769 at 4% or $101,846 at 6%; with 100% employer match about $114,577 at 4% or $76,384 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-65$120,695$12,070$186iApproximate average salary by contribution assumption: employee only about $4,642 at 4% or $3,095 at 6%; with 50% employer match about $3,095 at 4% or $2,063 at 6%; with 100% employer match about $2,321 at 4% or $1,547 at 6%.
2007259$126,535$15,007$254iApproximate average salary by contribution assumption: employee only about $6,359 at 4% or $4,239 at 6%; with 50% employer match about $4,239 at 4% or $2,826 at 6%; with 100% employer match about $3,179 at 4% or $2,120 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-59$126,535$15,007$254iApproximate average salary by contribution assumption: employee only about $6,359 at 4% or $4,239 at 6%; with 50% employer match about $4,239 at 4% or $2,826 at 6%; with 100% employer match about $3,179 at 4% or $2,120 at 6%.
Keystone Plastics Inc. 401(K) Plan-16---
2006255$1,130,430$249,743$4,541iApproximate average salary by contribution assumption: employee only about $113,520 at 4% or $75,680 at 6%; with 50% employer match about $75,680 at 4% or $50,453 at 6%; with 100% employer match about $56,760 at 4% or $37,840 at 6%.
Keystone Plastics Inc. 401(K) Plan-14$1,025,502$236,376$16,884iApproximate average salary by contribution assumption: employee only about $422,100 at 4% or $281,400 at 6%; with 50% employer match about $281,400 at 4% or $187,600 at 6%; with 100% employer match about $211,050 at 4% or $140,700 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-55$104,928$13,367$243iApproximate average salary by contribution assumption: employee only about $6,076 at 4% or $4,051 at 6%; with 50% employer match about $4,051 at 4% or $2,700 at 6%; with 100% employer match about $3,038 at 4% or $2,025 at 6%.
2005243$790,041$196,806$4,577iApproximate average salary by contribution assumption: employee only about $114,422 at 4% or $76,281 at 6%; with 50% employer match about $76,281 at 4% or $50,854 at 6%; with 100% employer match about $57,211 at 4% or $38,141 at 6%.
Keystone Plastics Inc. 401(K) Plan-14$700,165$179,473$12,820iApproximate average salary by contribution assumption: employee only about $320,488 at 4% or $213,658 at 6%; with 50% employer match about $213,658 at 4% or $142,439 at 6%; with 100% employer match about $160,244 at 4% or $106,829 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-43$89,876$17,333$403iApproximate average salary by contribution assumption: employee only about $10,077 at 4% or $6,718 at 6%; with 50% employer match about $6,718 at 4% or $4,479 at 6%; with 100% employer match about $5,039 at 4% or $3,359 at 6%.
2004251$607,227$142,791$2,800iApproximate average salary by contribution assumption: employee only about $69,996 at 4% or $46,664 at 6%; with 50% employer match about $46,664 at 4% or $31,109 at 6%; with 100% employer match about $34,998 at 4% or $23,332 at 6%.
Keystone Plastics Inc. 401(K) Plan-14$516,599$124,365$8,883iApproximate average salary by contribution assumption: employee only about $222,080 at 4% or $148,054 at 6%; with 50% employer match about $148,054 at 4% or $98,702 at 6%; with 100% employer match about $111,040 at 4% or $74,027 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-51$90,628$18,426$361iApproximate average salary by contribution assumption: employee only about $9,032 at 4% or $6,022 at 6%; with 50% employer match about $6,022 at 4% or $4,014 at 6%; with 100% employer match about $4,516 at 4% or $3,011 at 6%.
2003245$465,863$92,581$2,057iApproximate average salary by contribution assumption: employee only about $51,434 at 4% or $34,289 at 6%; with 50% employer match about $34,289 at 4% or $22,860 at 6%; with 100% employer match about $25,717 at 4% or $17,145 at 6%.
Keystone Plastics Inc. 401(K) Plan-13$396,427$74,455$5,727iApproximate average salary by contribution assumption: employee only about $143,183 at 4% or $95,455 at 6%; with 50% employer match about $95,455 at 4% or $63,637 at 6%; with 100% employer match about $71,591 at 4% or $47,728 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-45$69,436$18,126$403iApproximate average salary by contribution assumption: employee only about $10,070 at 4% or $6,713 at 6%; with 50% employer match about $6,713 at 4% or $4,476 at 6%; with 100% employer match about $5,035 at 4% or $3,357 at 6%.
2002251$324,794$92,501$1,814iApproximate average salary by contribution assumption: employee only about $45,344 at 4% or $30,229 at 6%; with 50% employer match about $30,229 at 4% or $20,153 at 6%; with 100% employer match about $22,672 at 4% or $15,115 at 6%.
Keystone Plastics Inc. 401(K) Plan-14$277,857$72,935$5,210iApproximate average salary by contribution assumption: employee only about $130,241 at 4% or $86,827 at 6%; with 50% employer match about $86,827 at 4% or $57,885 at 6%; with 100% employer match about $65,121 at 4% or $43,414 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-51$46,937$19,566$384iApproximate average salary by contribution assumption: employee only about $9,591 at 4% or $6,394 at 6%; with 50% employer match about $6,394 at 4% or $4,263 at 6%; with 100% employer match about $4,796 at 4% or $3,197 at 6%.
2001238$262,316$101,972$2,683iApproximate average salary by contribution assumption: employee only about $67,087 at 4% or $44,725 at 6%; with 50% employer match about $44,725 at 4% or $29,816 at 6%; with 100% employer match about $33,543 at 4% or $22,362 at 6%.
Keystone Plastics Inc. 401(K) Plan-12$233,988$78,327$6,527iApproximate average salary by contribution assumption: employee only about $163,181 at 4% or $108,788 at 6%; with 50% employer match about $108,788 at 4% or $72,525 at 6%; with 100% employer match about $81,591 at 4% or $54,394 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-38$28,328$23,645$622iApproximate average salary by contribution assumption: employee only about $15,556 at 4% or $10,371 at 6%; with 50% employer match about $10,371 at 4% or $6,914 at 6%; with 100% employer match about $7,778 at 4% or $5,185 at 6%.
2000232$179,775$68,778$2,149iApproximate average salary by contribution assumption: employee only about $53,733 at 4% or $35,822 at 6%; with 50% employer match about $35,822 at 4% or $23,881 at 6%; with 100% employer match about $26,866 at 4% or $17,911 at 6%.
Keystone Plastics Inc. 401(K) Plan-10$179,775$68,778$6,878iApproximate average salary by contribution assumption: employee only about $171,945 at 4% or $114,630 at 6%; with 50% employer match about $114,630 at 4% or $76,420 at 6%; with 100% employer match about $85,973 at 4% or $57,315 at 6%.
Keystone Plastics Inc. Union 401(K) Plan-32---
1999110$122,524$55,060$5,506iApproximate average salary by contribution assumption: employee only about $137,650 at 4% or $91,767 at 6%; with 50% employer match about $91,767 at 4% or $61,178 at 6%; with 100% employer match about $68,825 at 4% or $45,883 at 6%.
Keystone Plastics Inc. 401(K) Plan-10$122,524$55,060$5,506iApproximate average salary by contribution assumption: employee only about $137,650 at 4% or $91,767 at 6%; with 50% employer match about $91,767 at 4% or $61,178 at 6%; with 100% employer match about $68,825 at 4% or $45,883 at 6%.