Rock Wool Manufacturing Co.
Plan context: Rock Wool Manufacturing Company Hourly Retirement Plan
EIN 63-0276085 • Mt. Pleasant, SC • 61 filings • 9 plans
Current Snapshot
Latest Year
2020
2020 Participants
40
2020 Assets
$2,692,418
2020 Contributions
$107,636
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 |
|---|---|---|---|---|---|
| 2020 | 1 | 40 | $2,692,418 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 40 | $2,692,418 | $0 | - |
| 2019 | 1 | 45 | $2,630,398 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 45 | $2,630,398 | - | - |
| 2018 | 2 | 46 | $4,611,680 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 46 | $2,372,932 | - | - |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 27 | $2,238,748 | $0 | - |
| 2017 | 2 | 46 | $4,863,685 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 46 | $2,444,127 | - | - |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 27 | $2,419,558 | - | - |
| 2016 | 4 | 49 | $4,804,589 | $0 | - |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 27 | $2,562,120 | - | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 49 | $2,242,469 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PLAN AND TRUST | - | 0 | $0 | - | - |
| ROCK WOOL MANUFACTURING COLLECTIVE BARGAINING UNIT 401K PLAN | - | 0 | $0 | - | - |
| 2015 | 4 | 50 | $6,023,200 | $107,636 | $2,153iApproximate average salary by contribution assumption: employee only about $53,818 at 4% or $35,879 at 6%; with 50% employer match about $35,879 at 4% or $23,919 at 6%; with 100% employer match about $26,909 at 4% or $17,939 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 27 | $2,610,512 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 50 | $2,216,705 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PLAN AND TRUST | - | 43 | $1,180,171 | $104,942 | $2,441iApproximate average salary by contribution assumption: employee only about $61,013 at 4% or $40,675 at 6%; with 50% employer match about $40,675 at 4% or $27,117 at 6%; with 100% employer match about $30,506 at 4% or $20,338 at 6%. |
| ROCK WOOL MANUFACTURING COLLECTIVE BARGAINING UNIT 401K PLAN | - | 15 | $15,812 | $2,694 | $180iApproximate average salary by contribution assumption: employee only about $4,490 at 4% or $2,993 at 6%; with 50% employer match about $2,993 at 4% or $1,996 at 6%; with 100% employer match about $2,245 at 4% or $1,497 at 6%. |
| 2014 | 3 | 51 | $6,692,911 | $104,843 | $2,056iApproximate average salary by contribution assumption: employee only about $51,394 at 4% or $34,262 at 6%; with 50% employer match about $34,262 at 4% or $22,842 at 6%; with 100% employer match about $25,697 at 4% or $17,131 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 27 | $2,745,681 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 51 | $2,336,445 | $0 | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PROFIT SHARING PLAN | - | 43 | $1,610,785 | $104,843 | $2,438iApproximate average salary by contribution assumption: employee only about $60,955 at 4% or $40,637 at 6%; with 50% employer match about $40,637 at 4% or $27,091 at 6%; with 100% employer match about $30,478 at 4% or $20,318 at 6%. |
| 2013 | 3 | 54 | $6,776,916 | $241,289 | $4,468iApproximate average salary by contribution assumption: employee only about $111,708 at 4% or $74,472 at 6%; with 50% employer match about $74,472 at 4% or $49,648 at 6%; with 100% employer match about $55,854 at 4% or $37,236 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 28 | $3,057,143 | $121,125 | $4,326iApproximate average salary by contribution assumption: employee only about $108,147 at 4% or $72,098 at 6%; with 50% employer match about $72,098 at 4% or $48,065 at 6%; with 100% employer match about $54,074 at 4% or $36,049 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 54 | $2,256,791 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PROFIT SHARING PLAN | - | 40 | $1,462,982 | $120,164 | $3,004iApproximate average salary by contribution assumption: employee only about $75,103 at 4% or $50,068 at 6%; with 50% employer match about $50,068 at 4% or $33,379 at 6%; with 100% employer match about $37,551 at 4% or $25,034 at 6%. |
| 2012 | 3 | 59 | $6,186,621 | $124,600 | $2,112iApproximate average salary by contribution assumption: employee only about $52,797 at 4% or $35,198 at 6%; with 50% employer match about $35,198 at 4% or $23,465 at 6%; with 100% employer match about $26,398 at 4% or $17,599 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 31 | $2,879,399 | $26,675 | $860iApproximate average salary by contribution assumption: employee only about $21,512 at 4% or $14,341 at 6%; with 50% employer match about $14,341 at 4% or $9,561 at 6%; with 100% employer match about $10,756 at 4% or $7,171 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 59 | $2,068,623 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PROFIT SHARING PLAN | - | 30 | $1,238,599 | $97,925 | $3,264iApproximate average salary by contribution assumption: employee only about $81,604 at 4% or $54,403 at 6%; with 50% employer match about $54,403 at 4% or $36,269 at 6%; with 100% employer match about $40,802 at 4% or $27,201 at 6%. |
| 2011 | 3 | 60 | $6,445,622 | $258,062 | $4,301iApproximate average salary by contribution assumption: employee only about $107,526 at 4% or $71,684 at 6%; with 50% employer match about $71,684 at 4% or $47,789 at 6%; with 100% employer match about $53,763 at 4% or $35,842 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 31 | $2,902,406 | $163,741 | $5,282iApproximate average salary by contribution assumption: employee only about $132,049 at 4% or $88,033 at 6%; with 50% employer match about $88,033 at 4% or $58,689 at 6%; with 100% employer match about $66,025 at 4% or $44,016 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 60 | $1,968,585 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PROFIT SHARING PLAN | - | 38 | $1,574,631 | $94,321 | $2,482iApproximate average salary by contribution assumption: employee only about $62,053 at 4% or $41,369 at 6%; with 50% employer match about $41,369 at 4% or $27,579 at 6%; with 100% employer match about $31,027 at 4% or $20,684 at 6%. |
| 2010 | 3 | 60 | $6,389,987 | $377,679 | $6,295iApproximate average salary by contribution assumption: employee only about $157,366 at 4% or $104,911 at 6%; with 50% employer match about $104,911 at 4% or $69,941 at 6%; with 100% employer match about $78,683 at 4% or $52,455 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 32 | $2,785,181 | $186,509 | $5,828iApproximate average salary by contribution assumption: employee only about $145,710 at 4% or $97,140 at 6%; with 50% employer match about $97,140 at 4% or $64,760 at 6%; with 100% employer match about $72,855 at 4% or $48,570 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 60 | $2,017,061 | $0 | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PROFIT SHARING PLAN | - | 41 | $1,587,745 | $191,170 | $4,663iApproximate average salary by contribution assumption: employee only about $116,567 at 4% or $77,711 at 6%; with 50% employer match about $77,711 at 4% or $51,808 at 6%; with 100% employer match about $58,284 at 4% or $38,856 at 6%. |
| 2009 | 4 | 63 | $8,369,665 | $704,608 | $11,184iApproximate average salary by contribution assumption: employee only about $279,606 at 4% or $186,404 at 6%; with 50% employer match about $186,404 at 4% or $124,269 at 6%; with 100% employer match about $139,803 at 4% or $93,202 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 33 | $2,606,489 | $271,123 | $8,216iApproximate average salary by contribution assumption: employee only about $205,396 at 4% or $136,931 at 6%; with 50% employer match about $136,931 at 4% or $91,287 at 6%; with 100% employer match about $102,698 at 4% or $68,465 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 33 | $2,556,489 | $271,123 | $8,216iApproximate average salary by contribution assumption: employee only about $205,396 at 4% or $136,931 at 6%; with 50% employer match about $136,931 at 4% or $91,287 at 6%; with 100% employer match about $102,698 at 4% or $68,465 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 63 | $1,842,837 | $0 | - |
| ROCK WOOL MANUFACTURING COMPANY 401(K) PROFIT SHARING PLAN | - | 41 | $1,363,850 | $162,362 | $3,960iApproximate average salary by contribution assumption: employee only about $99,001 at 4% or $66,001 at 6%; with 50% employer match about $66,001 at 4% or $44,001 at 6%; with 100% employer match about $49,501 at 4% or $33,000 at 6%. |
| 2008 | 2 | 37 | $2,535,008 | $192,463 | $5,202iApproximate average salary by contribution assumption: employee only about $130,043 at 4% or $86,695 at 6%; with 50% employer match about $86,695 at 4% or $57,797 at 6%; with 100% employer match about $65,021 at 4% or $43,348 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 37 | $1,584,056 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PROFIT SHARING PLAN | - | 19 | $950,952 | $192,463 | $10,130iApproximate average salary by contribution assumption: employee only about $253,241 at 4% or $168,827 at 6%; with 50% employer match about $168,827 at 4% or $112,551 at 6%; with 100% employer match about $126,620 at 4% or $84,414 at 6%. |
| 2007 | 3 | 37 | $2,235,087 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 37 | $2,235,087 | - | - |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 6 | - | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PROFIT SHARING PLAN | - | 21 | - | - | - |
| 2006 | 3 | 39 | $6,470,285 | $180,598 | $4,631iApproximate average salary by contribution assumption: employee only about $115,768 at 4% or $77,179 at 6%; with 50% employer match about $77,179 at 4% or $51,452 at 6%; with 100% employer match about $57,884 at 4% or $38,589 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 7 | $3,340,928 | - | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 39 | $2,115,200 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PROFIT SHARING PLAN | - | 22 | $1,014,157 | $180,598 | $8,209iApproximate average salary by contribution assumption: employee only about $205,225 at 4% or $136,817 at 6%; with 50% employer match about $136,817 at 4% or $91,211 at 6%; with 100% employer match about $102,613 at 4% or $68,408 at 6%. |
| 2005 | 3 | 31 | $2,688,839 | $158,435 | $5,111iApproximate average salary by contribution assumption: employee only about $127,770 at 4% or $85,180 at 6%; with 50% employer match about $85,180 at 4% or $56,787 at 6%; with 100% employer match about $63,885 at 4% or $42,590 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 31 | $1,959,399 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PROFIT SHARING PLAN | - | 21 | $729,440 | $158,435 | $7,545iApproximate average salary by contribution assumption: employee only about $188,613 at 4% or $125,742 at 6%; with 50% employer match about $125,742 at 4% or $83,828 at 6%; with 100% employer match about $94,307 at 4% or $62,871 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 8 | - | - | - |
| 2004 | 3 | 29 | $5,638,371 | $119,172 | $4,109iApproximate average salary by contribution assumption: employee only about $102,734 at 4% or $68,490 at 6%; with 50% employer match about $68,490 at 4% or $45,660 at 6%; with 100% employer match about $51,367 at 4% or $34,245 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 12 | $3,246,141 | - | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 29 | $1,886,760 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PROFIT SHARING PLAN | - | 19 | $505,470 | $119,172 | $6,272iApproximate average salary by contribution assumption: employee only about $156,805 at 4% or $104,537 at 6%; with 50% employer match about $104,537 at 4% or $69,691 at 6%; with 100% employer match about $78,403 at 4% or $52,268 at 6%. |
| 2003 | 3 | 36 | $2,108,669 | $101,063 | $2,807iApproximate average salary by contribution assumption: employee only about $70,183 at 4% or $46,788 at 6%; with 50% employer match about $46,788 at 4% or $31,192 at 6%; with 100% employer match about $35,091 at 4% or $23,394 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 36 | $1,823,516 | $73 | $2iApproximate average salary by contribution assumption: employee only about $51 at 4% or $34 at 6%; with 50% employer match about $34 at 4% or $23 at 6%; with 100% employer match about $25 at 4% or $17 at 6%. |
| ROCK WOOL MANUFACTURING COMPANY 401K PROFIT SHARING PLAN | - | 20 | $285,153 | $100,990 | $5,050iApproximate average salary by contribution assumption: employee only about $126,238 at 4% or $84,158 at 6%; with 50% employer match about $84,158 at 4% or $56,106 at 6%; with 100% employer match about $63,119 at 4% or $42,079 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 11 | - | - | - |
| 2002 | 3 | 66 | $0 | $0 | - |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 12 | - | - | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 39 | - | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PLAN & TRUST | - | 66 | - | - | - |
| 2001 | 3 | 40 | $1,856,987 | $0 | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 40 | $1,856,987 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PLAN & TRUST | - | 23 | - | - | - |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 14 | - | - | - |
| 2000 | 3 | 73 | $1,917,017 | $76,906 | $1,054iApproximate average salary by contribution assumption: employee only about $26,338 at 4% or $17,558 at 6%; with 50% employer match about $17,558 at 4% or $11,706 at 6%; with 100% employer match about $13,169 at 4% or $8,779 at 6%. |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 41 | $1,845,695 | - | - |
| ROCK WOOL MANUFACTURING COMPANY 401K PLAN & TRUST | - | 73 | $71,322 | $76,906 | $1,054iApproximate average salary by contribution assumption: employee only about $26,338 at 4% or $17,558 at 6%; with 50% employer match about $17,558 at 4% or $11,706 at 6%; with 100% employer match about $13,169 at 4% or $8,779 at 6%. |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 17 | - | - | - |
| 1999 | 2 | 38 | $5,242,513 | $0 | - |
| Rock Wool Manufacturing Company Revised Salaried Retirement Plan | - | 21 | $3,518,926 | - | - |
| Rock Wool Manufacturing Company Hourly Retirement Plan | - | 38 | $1,723,587 | - | - |