Current Snapshot
Latest Year
2025
2025 Participants
24
2025 Assets
$839,395
2025 Contributions
$27,811
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 | 0 | $0 | $27,811 | - |
| Ampstun 401(K) Plan | - | 0 | $0 | $27,811 | - |
| 2024 | 2 | 24 | $839,395 | $232,726 | $9,697iApproximate average salary by contribution assumption: employee only about $242,423 at 4% or $161,615 at 6%; with 50% employer match about $161,615 at 4% or $107,744 at 6%; with 100% employer match about $121,211 at 4% or $80,808 at 6%. |
| Ampstun 401(K) Plan | - | 24 | $839,395 | $108,244 | $4,510iApproximate average salary by contribution assumption: employee only about $112,754 at 4% or $75,169 at 6%; with 50% employer match about $75,169 at 4% or $50,113 at 6%; with 100% employer match about $56,377 at 4% or $37,585 at 6%. |
| AMPSTUN CORPORATION CBS BENEFIT PLAN | - | 0 | $0 | $124,482 | - |
| 2023 | 2 | 19 | $645,971 | $148,125 | $7,796iApproximate average salary by contribution assumption: employee only about $194,901 at 4% or $129,934 at 6%; with 50% employer match about $129,934 at 4% or $86,623 at 6%; with 100% employer match about $97,451 at 4% or $64,967 at 6%. |
| Ampstun 401(K) Plan | - | 19 | $643,843 | $104,498 | $5,500iApproximate average salary by contribution assumption: employee only about $137,497 at 4% or $91,665 at 6%; with 50% employer match about $91,665 at 4% or $61,110 at 6%; with 100% employer match about $68,749 at 4% or $45,832 at 6%. |
| AMPSTUN CORPORATION CBS BENEFIT PLAN | - | 12 | $2,128 | $43,627 | $3,636iApproximate average salary by contribution assumption: employee only about $90,890 at 4% or $60,593 at 6%; with 50% employer match about $60,593 at 4% or $40,395 at 6%; with 100% employer match about $45,445 at 4% or $30,297 at 6%. |
| 2022 | 1 | 19 | $461,757 | $101,823 | $5,359iApproximate average salary by contribution assumption: employee only about $133,978 at 4% or $89,318 at 6%; with 50% employer match about $89,318 at 4% or $59,546 at 6%; with 100% employer match about $66,989 at 4% or $44,659 at 6%. |
| Ampstun 401(K) Plan | - | 19 | $461,757 | $101,823 | $5,359iApproximate average salary by contribution assumption: employee only about $133,978 at 4% or $89,318 at 6%; with 50% employer match about $89,318 at 4% or $59,546 at 6%; with 100% employer match about $66,989 at 4% or $44,659 at 6%. |
| 2021 | 1 | 19 | $503,923 | $89,111 | $4,690iApproximate average salary by contribution assumption: employee only about $117,251 at 4% or $78,168 at 6%; with 50% employer match about $78,168 at 4% or $52,112 at 6%; with 100% employer match about $58,626 at 4% or $39,084 at 6%. |
| Ampstun 401(K) Plan | - | 19 | $503,923 | $89,111 | $4,690iApproximate average salary by contribution assumption: employee only about $117,251 at 4% or $78,168 at 6%; with 50% employer match about $78,168 at 4% or $52,112 at 6%; with 100% employer match about $58,626 at 4% or $39,084 at 6%. |
| 2020 | 1 | 20 | $538,006 | $81,947 | $4,097iApproximate average salary by contribution assumption: employee only about $102,434 at 4% or $68,289 at 6%; with 50% employer match about $68,289 at 4% or $45,526 at 6%; with 100% employer match about $51,217 at 4% or $34,145 at 6%. |
| Ampstun 401(K) Plan | - | 20 | $538,006 | $81,947 | $4,097iApproximate average salary by contribution assumption: employee only about $102,434 at 4% or $68,289 at 6%; with 50% employer match about $68,289 at 4% or $45,526 at 6%; with 100% employer match about $51,217 at 4% or $34,145 at 6%. |
| 2019 | 1 | 20 | $395,535 | $112,878 | $5,644iApproximate average salary by contribution assumption: employee only about $141,098 at 4% or $94,065 at 6%; with 50% employer match about $94,065 at 4% or $62,710 at 6%; with 100% employer match about $70,549 at 4% or $47,033 at 6%. |
| Ampstun 401(K) Plan | - | 20 | $395,535 | $112,878 | $5,644iApproximate average salary by contribution assumption: employee only about $141,098 at 4% or $94,065 at 6%; with 50% employer match about $94,065 at 4% or $62,710 at 6%; with 100% employer match about $70,549 at 4% or $47,033 at 6%. |
| 2018 | 1 | 14 | $225,405 | $57,476 | $4,105iApproximate average salary by contribution assumption: employee only about $102,636 at 4% or $68,424 at 6%; with 50% employer match about $68,424 at 4% or $45,616 at 6%; with 100% employer match about $51,318 at 4% or $34,212 at 6%. |
| Ampstun 401(K) Plan | - | 14 | $225,405 | $57,476 | $4,105iApproximate average salary by contribution assumption: employee only about $102,636 at 4% or $68,424 at 6%; with 50% employer match about $68,424 at 4% or $45,616 at 6%; with 100% employer match about $51,318 at 4% or $34,212 at 6%. |
| 2017 | 1 | 11 | $186,510 | $28,744 | $2,613iApproximate average salary by contribution assumption: employee only about $65,327 at 4% or $43,552 at 6%; with 50% employer match about $43,552 at 4% or $29,034 at 6%; with 100% employer match about $32,664 at 4% or $21,776 at 6%. |
| Ampstun 401(K) Plan | - | 11 | $186,510 | $28,744 | $2,613iApproximate average salary by contribution assumption: employee only about $65,327 at 4% or $43,552 at 6%; with 50% employer match about $43,552 at 4% or $29,034 at 6%; with 100% employer match about $32,664 at 4% or $21,776 at 6%. |
| 2016 | 1 | 7 | $133,770 | $130,378 | $18,625iApproximate average salary by contribution assumption: employee only about $465,636 at 4% or $310,424 at 6%; with 50% employer match about $310,424 at 4% or $206,949 at 6%; with 100% employer match about $232,818 at 4% or $155,212 at 6%. |
| Ampstun 401(K) Plan | - | 7 | $133,770 | $130,378 | $18,625iApproximate average salary by contribution assumption: employee only about $465,636 at 4% or $310,424 at 6%; with 50% employer match about $310,424 at 4% or $206,949 at 6%; with 100% employer match about $232,818 at 4% or $155,212 at 6%. |