Civic Intelligence

Cornerstone Manufacturing Inc.

Plan context: Cornerstone/Lee Plastics 401(K) Retirement Plan

EIN 31-1627271 • Eaton, OH • 15 filings • 2 plans

861 U.s. Route 35, WestEaton, OH 45320
Current Snapshot

Latest Year

2025

2025 Participants

15

2025 Assets

$2,457,261

2025 Contributions

$28,827

Historical Graphs

Total Assets Over Time

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

$2,457,261$1,228,631$0201120182025YearValue
$2,457,261Latest year 2025

Participants Over Time

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

26130201120182025YearValue
15Latest 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
2025115$2,457,261$28,827$1,922iApproximate average salary by contribution assumption: employee only about $48,045 at 4% or $32,030 at 6%; with 50% employer match about $32,030 at 4% or $21,353 at 6%; with 100% employer match about $24,023 at 4% or $16,015 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-15$2,457,261$28,827$1,922iApproximate average salary by contribution assumption: employee only about $48,045 at 4% or $32,030 at 6%; with 50% employer match about $32,030 at 4% or $21,353 at 6%; with 100% employer match about $24,023 at 4% or $16,015 at 6%.
2024118$2,190,277$28,682$1,593iApproximate average salary by contribution assumption: employee only about $39,836 at 4% or $26,557 at 6%; with 50% employer match about $26,557 at 4% or $17,705 at 6%; with 100% employer match about $19,918 at 4% or $13,279 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-18$2,190,277$28,682$1,593iApproximate average salary by contribution assumption: employee only about $39,836 at 4% or $26,557 at 6%; with 50% employer match about $26,557 at 4% or $17,705 at 6%; with 100% employer match about $19,918 at 4% or $13,279 at 6%.
2023115$1,928,357$47,833$3,189iApproximate average salary by contribution assumption: employee only about $79,722 at 4% or $53,148 at 6%; with 50% employer match about $53,148 at 4% or $35,432 at 6%; with 100% employer match about $39,861 at 4% or $26,574 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-15$1,928,357$47,833$3,189iApproximate average salary by contribution assumption: employee only about $79,722 at 4% or $53,148 at 6%; with 50% employer match about $53,148 at 4% or $35,432 at 6%; with 100% employer match about $39,861 at 4% or $26,574 at 6%.
2022115$1,546,235$50,795$3,386iApproximate average salary by contribution assumption: employee only about $84,658 at 4% or $56,439 at 6%; with 50% employer match about $56,439 at 4% or $37,626 at 6%; with 100% employer match about $42,329 at 4% or $28,219 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-15$1,546,235$50,795$3,386iApproximate average salary by contribution assumption: employee only about $84,658 at 4% or $56,439 at 6%; with 50% employer match about $56,439 at 4% or $37,626 at 6%; with 100% employer match about $42,329 at 4% or $28,219 at 6%.
2021112$1,958,271$47,434$3,953iApproximate average salary by contribution assumption: employee only about $98,821 at 4% or $65,881 at 6%; with 50% employer match about $65,881 at 4% or $43,920 at 6%; with 100% employer match about $49,410 at 4% or $32,940 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-12$1,958,271$47,434$3,953iApproximate average salary by contribution assumption: employee only about $98,821 at 4% or $65,881 at 6%; with 50% employer match about $65,881 at 4% or $43,920 at 6%; with 100% employer match about $49,410 at 4% or $32,940 at 6%.
2020112$1,618,655$48,475$4,040iApproximate average salary by contribution assumption: employee only about $100,990 at 4% or $67,326 at 6%; with 50% employer match about $67,326 at 4% or $44,884 at 6%; with 100% employer match about $50,495 at 4% or $33,663 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-12$1,618,655$48,475$4,040iApproximate average salary by contribution assumption: employee only about $100,990 at 4% or $67,326 at 6%; with 50% employer match about $67,326 at 4% or $44,884 at 6%; with 100% employer match about $50,495 at 4% or $33,663 at 6%.
2019115$1,278,587$56,490$3,766iApproximate average salary by contribution assumption: employee only about $94,150 at 4% or $62,767 at 6%; with 50% employer match about $62,767 at 4% or $41,844 at 6%; with 100% employer match about $47,075 at 4% or $31,383 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-15$1,278,587$56,490$3,766iApproximate average salary by contribution assumption: employee only about $94,150 at 4% or $62,767 at 6%; with 50% employer match about $62,767 at 4% or $41,844 at 6%; with 100% employer match about $47,075 at 4% or $31,383 at 6%.
2018115$961,422$78,498$5,233iApproximate average salary by contribution assumption: employee only about $130,830 at 4% or $87,220 at 6%; with 50% employer match about $87,220 at 4% or $58,147 at 6%; with 100% employer match about $65,415 at 4% or $43,610 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-15$961,422$78,498$5,233iApproximate average salary by contribution assumption: employee only about $130,830 at 4% or $87,220 at 6%; with 50% employer match about $87,220 at 4% or $58,147 at 6%; with 100% employer match about $65,415 at 4% or $43,610 at 6%.
2017124$1,045,525$153,940$6,414iApproximate average salary by contribution assumption: employee only about $160,354 at 4% or $106,903 at 6%; with 50% employer match about $106,903 at 4% or $71,269 at 6%; with 100% employer match about $80,177 at 4% or $53,451 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-24$1,045,525$153,940$6,414iApproximate average salary by contribution assumption: employee only about $160,354 at 4% or $106,903 at 6%; with 50% employer match about $106,903 at 4% or $71,269 at 6%; with 100% employer match about $80,177 at 4% or $53,451 at 6%.
2016121$740,466$161,343$7,683iApproximate average salary by contribution assumption: employee only about $192,075 at 4% or $128,050 at 6%; with 50% employer match about $128,050 at 4% or $85,367 at 6%; with 100% employer match about $96,038 at 4% or $64,025 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-21$740,466$161,343$7,683iApproximate average salary by contribution assumption: employee only about $192,075 at 4% or $128,050 at 6%; with 50% employer match about $128,050 at 4% or $85,367 at 6%; with 100% employer match about $96,038 at 4% or $64,025 at 6%.
2015124$551,642$153,829$6,410iApproximate average salary by contribution assumption: employee only about $160,239 at 4% or $106,826 at 6%; with 50% employer match about $106,826 at 4% or $71,217 at 6%; with 100% employer match about $80,119 at 4% or $53,413 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-24$551,642$153,829$6,410iApproximate average salary by contribution assumption: employee only about $160,239 at 4% or $106,826 at 6%; with 50% employer match about $106,826 at 4% or $71,217 at 6%; with 100% employer match about $80,119 at 4% or $53,413 at 6%.
2014126$430,923$170,694$6,565iApproximate average salary by contribution assumption: employee only about $164,129 at 4% or $109,419 at 6%; with 50% employer match about $109,419 at 4% or $72,946 at 6%; with 100% employer match about $82,064 at 4% or $54,710 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-26$430,923$170,694$6,565iApproximate average salary by contribution assumption: employee only about $164,129 at 4% or $109,419 at 6%; with 50% employer match about $109,419 at 4% or $72,946 at 6%; with 100% employer match about $82,064 at 4% or $54,710 at 6%.
2013124$302,994$175,289$7,304iApproximate average salary by contribution assumption: employee only about $182,593 at 4% or $121,728 at 6%; with 50% employer match about $121,728 at 4% or $81,152 at 6%; with 100% employer match about $91,296 at 4% or $60,864 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-24$302,994$175,289$7,304iApproximate average salary by contribution assumption: employee only about $182,593 at 4% or $121,728 at 6%; with 50% employer match about $121,728 at 4% or $81,152 at 6%; with 100% employer match about $91,296 at 4% or $60,864 at 6%.
2012124$102,894$69,822$2,909iApproximate average salary by contribution assumption: employee only about $72,731 at 4% or $48,488 at 6%; with 50% employer match about $48,488 at 4% or $32,325 at 6%; with 100% employer match about $36,366 at 4% or $24,244 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-24$102,894$69,822$2,909iApproximate average salary by contribution assumption: employee only about $72,731 at 4% or $48,488 at 6%; with 50% employer match about $48,488 at 4% or $32,325 at 6%; with 100% employer match about $36,366 at 4% or $24,244 at 6%.
2011125$28,017$28,345$1,134iApproximate average salary by contribution assumption: employee only about $28,345 at 4% or $18,897 at 6%; with 50% employer match about $18,897 at 4% or $12,598 at 6%; with 100% employer match about $14,173 at 4% or $9,448 at 6%.
Cornerstone/Lee Plastics 401(K) Retirement Plan-25$28,017$28,345$1,134iApproximate average salary by contribution assumption: employee only about $28,345 at 4% or $18,897 at 6%; with 50% employer match about $18,897 at 4% or $12,598 at 6%; with 100% employer match about $14,173 at 4% or $9,448 at 6%.