Civic Intelligence

Interior Stone Company

Plan context: Interior Stone LLC 401(K) Plan

EIN 04-3539663 • Waltham, MA • 18 filings • 2 plans

187 Lexington StreetWaltham, MA 02452
Current Snapshot

Latest Year

2025

2025 Participants

31

2025 Assets

$2,014,687

2025 Contributions

$116,367

Historical Graphs

Total Assets Over Time

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

$2,014,687$1,007,344$0200420182025YearValue
$2,014,687Latest year 2025

Participants Over Time

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

32160200420172025YearValue
31Latest 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
2025131$2,014,687$116,367$3,754iApproximate average salary by contribution assumption: employee only about $93,844 at 4% or $62,563 at 6%; with 50% employer match about $62,563 at 4% or $41,709 at 6%; with 100% employer match about $46,922 at 4% or $31,281 at 6%.
Interior Stone LLC 401(K) Plan-31$2,014,687$116,367$3,754iApproximate average salary by contribution assumption: employee only about $93,844 at 4% or $62,563 at 6%; with 50% employer match about $62,563 at 4% or $41,709 at 6%; with 100% employer match about $46,922 at 4% or $31,281 at 6%.
2024132$1,623,290$127,599$3,987iApproximate average salary by contribution assumption: employee only about $99,687 at 4% or $66,458 at 6%; with 50% employer match about $66,458 at 4% or $44,305 at 6%; with 100% employer match about $49,843 at 4% or $33,229 at 6%.
Interior Stone LLC 401(K) Plan-32$1,623,290$127,599$3,987iApproximate average salary by contribution assumption: employee only about $99,687 at 4% or $66,458 at 6%; with 50% employer match about $66,458 at 4% or $44,305 at 6%; with 100% employer match about $49,843 at 4% or $33,229 at 6%.
2023130$1,435,157$187,242$6,241iApproximate average salary by contribution assumption: employee only about $156,035 at 4% or $104,023 at 6%; with 50% employer match about $104,023 at 4% or $69,349 at 6%; with 100% employer match about $78,018 at 4% or $52,012 at 6%.
Interior Stone LLC 401(K) Plan-30$1,435,157$187,242$6,241iApproximate average salary by contribution assumption: employee only about $156,035 at 4% or $104,023 at 6%; with 50% employer match about $104,023 at 4% or $69,349 at 6%; with 100% employer match about $78,018 at 4% or $52,012 at 6%.
2022129$1,043,477$88,502$3,052iApproximate average salary by contribution assumption: employee only about $76,295 at 4% or $50,863 at 6%; with 50% employer match about $50,863 at 4% or $33,909 at 6%; with 100% employer match about $38,147 at 4% or $25,432 at 6%.
Interior Stone LLC 401(K) Plan-29$1,043,477$88,502$3,052iApproximate average salary by contribution assumption: employee only about $76,295 at 4% or $50,863 at 6%; with 50% employer match about $50,863 at 4% or $33,909 at 6%; with 100% employer match about $38,147 at 4% or $25,432 at 6%.
2021131$1,209,628$175,251$5,653iApproximate average salary by contribution assumption: employee only about $141,331 at 4% or $94,221 at 6%; with 50% employer match about $94,221 at 4% or $62,814 at 6%; with 100% employer match about $70,666 at 4% or $47,110 at 6%.
Interior Stone LLC 401(K) Plan-31$1,209,628$175,251$5,653iApproximate average salary by contribution assumption: employee only about $141,331 at 4% or $94,221 at 6%; with 50% employer match about $94,221 at 4% or $62,814 at 6%; with 100% employer match about $70,666 at 4% or $47,110 at 6%.
2020129$929,886$162,852$5,616iApproximate average salary by contribution assumption: employee only about $140,390 at 4% or $93,593 at 6%; with 50% employer match about $93,593 at 4% or $62,395 at 6%; with 100% employer match about $70,195 at 4% or $46,797 at 6%.
Interior Stone LLC 401(K) Plan-29$929,886$162,852$5,616iApproximate average salary by contribution assumption: employee only about $140,390 at 4% or $93,593 at 6%; with 50% employer match about $93,593 at 4% or $62,395 at 6%; with 100% employer match about $70,195 at 4% or $46,797 at 6%.
2019126$669,870$173,362$6,668iApproximate average salary by contribution assumption: employee only about $166,694 at 4% or $111,129 at 6%; with 50% employer match about $111,129 at 4% or $74,086 at 6%; with 100% employer match about $83,347 at 4% or $55,565 at 6%.
Interior Stone LLC 401(K) Plan-26$669,870$173,362$6,668iApproximate average salary by contribution assumption: employee only about $166,694 at 4% or $111,129 at 6%; with 50% employer match about $111,129 at 4% or $74,086 at 6%; with 100% employer match about $83,347 at 4% or $55,565 at 6%.
2018124$413,024$124,307$5,179iApproximate average salary by contribution assumption: employee only about $129,486 at 4% or $86,324 at 6%; with 50% employer match about $86,324 at 4% or $57,550 at 6%; with 100% employer match about $64,743 at 4% or $43,162 at 6%.
Interior Stone LLC 401(K) Plan-24$413,024$124,307$5,179iApproximate average salary by contribution assumption: employee only about $129,486 at 4% or $86,324 at 6%; with 50% employer match about $86,324 at 4% or $57,550 at 6%; with 100% employer match about $64,743 at 4% or $43,162 at 6%.
2017120$327,450$123,460$6,173iApproximate average salary by contribution assumption: employee only about $154,325 at 4% or $102,883 at 6%; with 50% employer match about $102,883 at 4% or $68,589 at 6%; with 100% employer match about $77,163 at 4% or $51,442 at 6%.
Interior Stone LLC 401(K) Plan-20$327,450$123,460$6,173iApproximate average salary by contribution assumption: employee only about $154,325 at 4% or $102,883 at 6%; with 50% employer match about $102,883 at 4% or $68,589 at 6%; with 100% employer match about $77,163 at 4% or $51,442 at 6%.
2016116$188,874$105,104$6,569iApproximate average salary by contribution assumption: employee only about $164,225 at 4% or $109,483 at 6%; with 50% employer match about $109,483 at 4% or $72,989 at 6%; with 100% employer match about $82,113 at 4% or $54,742 at 6%.
Interior Stone LLC 401(K) Plan-16$188,874$105,104$6,569iApproximate average salary by contribution assumption: employee only about $164,225 at 4% or $109,483 at 6%; with 50% employer match about $109,483 at 4% or $72,989 at 6%; with 100% employer match about $82,113 at 4% or $54,742 at 6%.
2015110$79,193$79,219$7,922iApproximate average salary by contribution assumption: employee only about $198,048 at 4% or $132,032 at 6%; with 50% employer match about $132,032 at 4% or $88,021 at 6%; with 100% employer match about $99,024 at 4% or $66,016 at 6%.
Interior Stone LLC 401(K) Plan-10$79,193$79,219$7,922iApproximate average salary by contribution assumption: employee only about $198,048 at 4% or $132,032 at 6%; with 50% employer match about $132,032 at 4% or $88,021 at 6%; with 100% employer match about $99,024 at 4% or $66,016 at 6%.
201010$0$0-
Interior Stone LLC 401(K) Plan-0$0--
200917$52,802$0-
Interior Stone LLC 401(K) Plan-7$52,802--
2008111$0$0-
Interior Stone LLC 401(K) Plan-11---
2007111$0$0-
Interior Stone LLC 401(K) Plan-11---
2006113$109,780$0-
Interior Stone LLC 401(K) Plan-13$109,780--
2005110$103,819$51,006$5,101iApproximate average salary by contribution assumption: employee only about $127,515 at 4% or $85,010 at 6%; with 50% employer match about $85,010 at 4% or $56,673 at 6%; with 100% employer match about $63,758 at 4% or $42,505 at 6%.
Interior Stone LLC 401(K) Plan-10$103,819$51,006$5,101iApproximate average salary by contribution assumption: employee only about $127,515 at 4% or $85,010 at 6%; with 50% employer match about $85,010 at 4% or $56,673 at 6%; with 100% employer match about $63,758 at 4% or $42,505 at 6%.
2004110$50,000$50,000$5,000iApproximate average salary by contribution assumption: employee only about $125,000 at 4% or $83,333 at 6%; with 50% employer match about $83,333 at 4% or $55,556 at 6%; with 100% employer match about $62,500 at 4% or $41,667 at 6%.
Interior Stone LLC 401(K) Plan-10$50,000$50,000$5,000iApproximate average salary by contribution assumption: employee only about $125,000 at 4% or $83,333 at 6%; with 50% employer match about $83,333 at 4% or $55,556 at 6%; with 100% employer match about $62,500 at 4% or $41,667 at 6%.