CORNERSTONE CONSTRUCTION SERVICES, INC.
Plan context: Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan
EIN 51-0394746 • New Castle, DE • 32 filings • 3 plans
Current Snapshot
Latest Year
2025
2025 Participants
29
2025 Assets
$2,843,277
2025 Contributions
$246,771
Historical Graphs
Total Assets Over Time
Aggregate end-of-year assets by filing year, excluding zero-asset years
Participants Over Time
Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans
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 / Filing | Filings | Participants | Assets | Contributions | Contrib./Participant |
|---|---|---|---|---|---|
| 2025 | 1 | 29 | $2,843,277 | $246,771 | $8,509iApproximate average salary by contribution assumption: employee only about $212,734 at 4% or $141,822 at 6%; with 50% employer match about $141,822 at 4% or $94,548 at 6%; with 100% employer match about $106,367 at 4% or $70,911 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 29 | $2,843,277 | $246,771 | $8,509iApproximate average salary by contribution assumption: employee only about $212,734 at 4% or $141,822 at 6%; with 50% employer match about $141,822 at 4% or $94,548 at 6%; with 100% employer match about $106,367 at 4% or $70,911 at 6%. |
| 2024 | 2 | 21 | $2,276,568 | $187,087 | $8,909iApproximate average salary by contribution assumption: employee only about $222,723 at 4% or $148,482 at 6%; with 50% employer match about $148,482 at 4% or $98,988 at 6%; with 100% employer match about $111,361 at 4% or $74,241 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 21 | $2,276,568 | $184,423 | $8,782iApproximate average salary by contribution assumption: employee only about $219,551 at 4% or $146,367 at 6%; with 50% employer match about $146,367 at 4% or $97,578 at 6%; with 100% employer match about $109,776 at 4% or $73,184 at 6%. |
| Cornerstone Construction Employee Benefit Plan Trust | - | 0 | - | $2,664 | - |
| 2023 | 2 | 21 | $2,015,847 | $659,941 | $31,426iApproximate average salary by contribution assumption: employee only about $785,644 at 4% or $523,763 at 6%; with 50% employer match about $523,763 at 4% or $349,175 at 6%; with 100% employer match about $392,822 at 4% or $261,881 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 21 | $1,879,378 | $220,759 | $10,512iApproximate average salary by contribution assumption: employee only about $262,808 at 4% or $175,206 at 6%; with 50% employer match about $175,206 at 4% or $116,804 at 6%; with 100% employer match about $131,404 at 4% or $87,603 at 6%. |
| Cornerstone Construction Employee Benefit Plan Trust | - | 18 | $136,469 | $439,182 | $24,399iApproximate average salary by contribution assumption: employee only about $609,975 at 4% or $406,650 at 6%; with 50% employer match about $406,650 at 4% or $271,100 at 6%; with 100% employer match about $304,988 at 4% or $203,325 at 6%. |
| 2022 | 2 | 20 | $1,459,900 | $356,186 | $17,809iApproximate average salary by contribution assumption: employee only about $445,233 at 4% or $296,822 at 6%; with 50% employer match about $296,822 at 4% or $197,881 at 6%; with 100% employer match about $222,616 at 4% or $148,411 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 20 | $1,459,900 | $138,667 | $6,933iApproximate average salary by contribution assumption: employee only about $173,334 at 4% or $115,556 at 6%; with 50% employer match about $115,556 at 4% or $77,037 at 6%; with 100% employer match about $86,667 at 4% or $57,778 at 6%. |
| Cornerstone Construction Employee Benefit Plan Trust | - | 15 | - | $217,519 | $14,501iApproximate average salary by contribution assumption: employee only about $362,532 at 4% or $241,688 at 6%; with 50% employer match about $241,688 at 4% or $161,125 at 6%; with 100% employer match about $181,266 at 4% or $120,844 at 6%. |
| 2021 | 2 | 20 | $1,631,832 | $451,847 | $22,592iApproximate average salary by contribution assumption: employee only about $564,809 at 4% or $376,539 at 6%; with 50% employer match about $376,539 at 4% or $251,026 at 6%; with 100% employer match about $282,404 at 4% or $188,270 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 20 | $1,566,554 | $164,052 | $8,203iApproximate average salary by contribution assumption: employee only about $205,065 at 4% or $136,710 at 6%; with 50% employer match about $136,710 at 4% or $91,140 at 6%; with 100% employer match about $102,533 at 4% or $68,355 at 6%. |
| Cornerstone Construction Employee Benefit Plan Trust | - | 15 | $65,278 | $287,795 | $19,186iApproximate average salary by contribution assumption: employee only about $479,658 at 4% or $319,772 at 6%; with 50% employer match about $319,772 at 4% or $213,181 at 6%; with 100% employer match about $239,829 at 4% or $159,886 at 6%. |
| 2020 | 2 | 20 | $2,279,792 | $426,010 | $21,301iApproximate average salary by contribution assumption: employee only about $532,513 at 4% or $355,008 at 6%; with 50% employer match about $355,008 at 4% or $236,672 at 6%; with 100% employer match about $266,256 at 4% or $177,504 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 20 | $2,274,142 | $153,517 | $7,676iApproximate average salary by contribution assumption: employee only about $191,896 at 4% or $127,931 at 6%; with 50% employer match about $127,931 at 4% or $85,287 at 6%; with 100% employer match about $95,948 at 4% or $63,965 at 6%. |
| Cornerstone Construction Employee Benefit Plan Trust | - | 20 | $5,650 | $272,493 | $13,625iApproximate average salary by contribution assumption: employee only about $340,616 at 4% or $227,078 at 6%; with 50% employer match about $227,078 at 4% or $151,385 at 6%; with 100% employer match about $170,308 at 4% or $113,539 at 6%. |
| 2019 | 2 | 21 | $2,387,939 | $827,388 | $39,399iApproximate average salary by contribution assumption: employee only about $984,986 at 4% or $656,657 at 6%; with 50% employer match about $656,657 at 4% or $437,771 at 6%; with 100% employer match about $492,493 at 4% or $328,329 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 21 | $2,333,389 | $616,048 | $29,336iApproximate average salary by contribution assumption: employee only about $733,390 at 4% or $488,927 at 6%; with 50% employer match about $488,927 at 4% or $325,951 at 6%; with 100% employer match about $366,695 at 4% or $244,463 at 6%. |
| Cornerstone Construction Employee Benefit Plan Trust | - | 16 | $54,550 | $211,340 | $13,209iApproximate average salary by contribution assumption: employee only about $330,219 at 4% or $220,146 at 6%; with 50% employer match about $220,146 at 4% or $146,764 at 6%; with 100% employer match about $165,109 at 4% or $110,073 at 6%. |
| 2018 | 1 | 20 | $1,850,243 | $129,371 | $6,469iApproximate average salary by contribution assumption: employee only about $161,714 at 4% or $107,809 at 6%; with 50% employer match about $107,809 at 4% or $71,873 at 6%; with 100% employer match about $80,857 at 4% or $53,905 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 20 | $1,850,243 | $129,371 | $6,469iApproximate average salary by contribution assumption: employee only about $161,714 at 4% or $107,809 at 6%; with 50% employer match about $107,809 at 4% or $71,873 at 6%; with 100% employer match about $80,857 at 4% or $53,905 at 6%. |
| 2017 | 1 | 20 | $1,842,215 | $119,180 | $5,959iApproximate average salary by contribution assumption: employee only about $148,975 at 4% or $99,317 at 6%; with 50% employer match about $99,317 at 4% or $66,211 at 6%; with 100% employer match about $74,488 at 4% or $49,658 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 20 | $1,842,215 | $119,180 | $5,959iApproximate average salary by contribution assumption: employee only about $148,975 at 4% or $99,317 at 6%; with 50% employer match about $99,317 at 4% or $66,211 at 6%; with 100% employer match about $74,488 at 4% or $49,658 at 6%. |
| 2016 | 1 | 18 | $1,634,015 | $125,702 | $6,983iApproximate average salary by contribution assumption: employee only about $174,586 at 4% or $116,391 at 6%; with 50% employer match about $116,391 at 4% or $77,594 at 6%; with 100% employer match about $87,293 at 4% or $58,195 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 18 | $1,634,015 | $125,702 | $6,983iApproximate average salary by contribution assumption: employee only about $174,586 at 4% or $116,391 at 6%; with 50% employer match about $116,391 at 4% or $77,594 at 6%; with 100% employer match about $87,293 at 4% or $58,195 at 6%. |
| 2015 | 1 | 19 | $1,428,643 | $74,319 | $3,912iApproximate average salary by contribution assumption: employee only about $97,788 at 4% or $65,192 at 6%; with 50% employer match about $65,192 at 4% or $43,461 at 6%; with 100% employer match about $48,894 at 4% or $32,596 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 19 | $1,428,643 | $74,319 | $3,912iApproximate average salary by contribution assumption: employee only about $97,788 at 4% or $65,192 at 6%; with 50% employer match about $65,192 at 4% or $43,461 at 6%; with 100% employer match about $48,894 at 4% or $32,596 at 6%. |
| 2014 | 1 | 28 | $1,522,400 | $135,346 | $4,834iApproximate average salary by contribution assumption: employee only about $120,845 at 4% or $80,563 at 6%; with 50% employer match about $80,563 at 4% or $53,709 at 6%; with 100% employer match about $60,422 at 4% or $40,282 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 28 | $1,522,400 | $135,346 | $4,834iApproximate average salary by contribution assumption: employee only about $120,845 at 4% or $80,563 at 6%; with 50% employer match about $80,563 at 4% or $53,709 at 6%; with 100% employer match about $60,422 at 4% or $40,282 at 6%. |
| 2013 | 1 | 25 | $1,417,258 | $86,696 | $3,468iApproximate average salary by contribution assumption: employee only about $86,696 at 4% or $57,797 at 6%; with 50% employer match about $57,797 at 4% or $38,532 at 6%; with 100% employer match about $43,348 at 4% or $28,899 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 25 | $1,417,258 | $86,696 | $3,468iApproximate average salary by contribution assumption: employee only about $86,696 at 4% or $57,797 at 6%; with 50% employer match about $57,797 at 4% or $38,532 at 6%; with 100% employer match about $43,348 at 4% or $28,899 at 6%. |
| 2012 | 1 | 26 | $1,726,925 | $98,419 | $3,785iApproximate average salary by contribution assumption: employee only about $94,634 at 4% or $63,089 at 6%; with 50% employer match about $63,089 at 4% or $42,059 at 6%; with 100% employer match about $47,317 at 4% or $31,545 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 26 | $1,726,925 | $98,419 | $3,785iApproximate average salary by contribution assumption: employee only about $94,634 at 4% or $63,089 at 6%; with 50% employer match about $63,089 at 4% or $42,059 at 6%; with 100% employer match about $47,317 at 4% or $31,545 at 6%. |
| 2011 | 1 | 33 | $1,637,186 | $74,657 | $2,262iApproximate average salary by contribution assumption: employee only about $56,558 at 4% or $37,706 at 6%; with 50% employer match about $37,706 at 4% or $25,137 at 6%; with 100% employer match about $28,279 at 4% or $18,853 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 33 | $1,637,186 | $74,657 | $2,262iApproximate average salary by contribution assumption: employee only about $56,558 at 4% or $37,706 at 6%; with 50% employer match about $37,706 at 4% or $25,137 at 6%; with 100% employer match about $28,279 at 4% or $18,853 at 6%. |
| 2010 | 1 | 55 | $1,722,329 | $185,573 | $3,374iApproximate average salary by contribution assumption: employee only about $84,351 at 4% or $56,234 at 6%; with 50% employer match about $56,234 at 4% or $37,489 at 6%; with 100% employer match about $42,176 at 4% or $28,117 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 55 | $1,722,329 | $185,573 | $3,374iApproximate average salary by contribution assumption: employee only about $84,351 at 4% or $56,234 at 6%; with 50% employer match about $56,234 at 4% or $37,489 at 6%; with 100% employer match about $42,176 at 4% or $28,117 at 6%. |
| 2009 | 1 | 60 | $1,972,686 | $161,324 | $2,689iApproximate average salary by contribution assumption: employee only about $67,218 at 4% or $44,812 at 6%; with 50% employer match about $44,812 at 4% or $29,875 at 6%; with 100% employer match about $33,609 at 4% or $22,406 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 60 | $1,972,686 | $161,324 | $2,689iApproximate average salary by contribution assumption: employee only about $67,218 at 4% or $44,812 at 6%; with 50% employer match about $44,812 at 4% or $29,875 at 6%; with 100% employer match about $33,609 at 4% or $22,406 at 6%. |
| 2008 | 1 | 33 | $1,680,916 | $227,322 | $6,889iApproximate average salary by contribution assumption: employee only about $172,214 at 4% or $114,809 at 6%; with 50% employer match about $114,809 at 4% or $76,539 at 6%; with 100% employer match about $86,107 at 4% or $57,405 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 33 | $1,680,916 | $227,322 | $6,889iApproximate average salary by contribution assumption: employee only about $172,214 at 4% or $114,809 at 6%; with 50% employer match about $114,809 at 4% or $76,539 at 6%; with 100% employer match about $86,107 at 4% or $57,405 at 6%. |
| 2007 | 1 | 29 | $0 | $0 | - |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 29 | - | - | - |
| 2006 | 1 | 32 | $1,606,612 | $241,908 | $7,560iApproximate average salary by contribution assumption: employee only about $188,991 at 4% or $125,994 at 6%; with 50% employer match about $125,994 at 4% or $83,996 at 6%; with 100% employer match about $94,495 at 4% or $62,997 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 32 | $1,606,612 | $241,908 | $7,560iApproximate average salary by contribution assumption: employee only about $188,991 at 4% or $125,994 at 6%; with 50% employer match about $125,994 at 4% or $83,996 at 6%; with 100% employer match about $94,495 at 4% or $62,997 at 6%. |
| 2005 | 1 | 31 | $1,301,347 | $184,607 | $5,955iApproximate average salary by contribution assumption: employee only about $148,877 at 4% or $99,251 at 6%; with 50% employer match about $99,251 at 4% or $66,167 at 6%; with 100% employer match about $74,438 at 4% or $49,626 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 31 | $1,301,347 | $184,607 | $5,955iApproximate average salary by contribution assumption: employee only about $148,877 at 4% or $99,251 at 6%; with 50% employer match about $99,251 at 4% or $66,167 at 6%; with 100% employer match about $74,438 at 4% or $49,626 at 6%. |
| 2004 | 1 | 21 | $1,100,576 | $170,098 | $8,100iApproximate average salary by contribution assumption: employee only about $202,498 at 4% or $134,998 at 6%; with 50% employer match about $134,998 at 4% or $89,999 at 6%; with 100% employer match about $101,249 at 4% or $67,499 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 21 | $1,100,576 | $170,098 | $8,100iApproximate average salary by contribution assumption: employee only about $202,498 at 4% or $134,998 at 6%; with 50% employer match about $134,998 at 4% or $89,999 at 6%; with 100% employer match about $101,249 at 4% or $67,499 at 6%. |
| 2003 | 1 | 16 | $893,780 | $140,791 | $8,799iApproximate average salary by contribution assumption: employee only about $219,986 at 4% or $146,657 at 6%; with 50% employer match about $146,657 at 4% or $97,772 at 6%; with 100% employer match about $109,993 at 4% or $73,329 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 16 | $893,780 | $140,791 | $8,799iApproximate average salary by contribution assumption: employee only about $219,986 at 4% or $146,657 at 6%; with 50% employer match about $146,657 at 4% or $97,772 at 6%; with 100% employer match about $109,993 at 4% or $73,329 at 6%. |
| 2002 | 1 | 17 | $681,844 | $117,522 | $6,913iApproximate average salary by contribution assumption: employee only about $172,826 at 4% or $115,218 at 6%; with 50% employer match about $115,218 at 4% or $76,812 at 6%; with 100% employer match about $86,413 at 4% or $57,609 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 17 | $681,844 | $117,522 | $6,913iApproximate average salary by contribution assumption: employee only about $172,826 at 4% or $115,218 at 6%; with 50% employer match about $115,218 at 4% or $76,812 at 6%; with 100% employer match about $86,413 at 4% or $57,609 at 6%. |
| 2001 | 1 | 15 | $0 | $0 | - |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 15 | - | - | - |
| 2000 | 1 | 9 | $662,030 | $87,867 | $9,763iApproximate average salary by contribution assumption: employee only about $244,075 at 4% or $162,717 at 6%; with 50% employer match about $162,717 at 4% or $108,478 at 6%; with 100% employer match about $122,038 at 4% or $81,358 at 6%. |
| Cornerstone Construction Services Inc. 401(K) Retirement Savings Plan | - | 9 | $662,030 | $87,867 | $9,763iApproximate average salary by contribution assumption: employee only about $244,075 at 4% or $162,717 at 6%; with 50% employer match about $162,717 at 4% or $108,478 at 6%; with 100% employer match about $122,038 at 4% or $81,358 at 6%. |