American Superconductor Corp
Plan context: Amsc 401(K) Savings Plan
EIN 04-2959321 • Ayer, MA • 53 filings • 8 plans
Current Snapshot
Latest Year
2024
2024 Participants
292
2024 Assets
$56,741,155
2024 Contributions
$3,557,178
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 |
|---|---|---|---|---|---|
| 2024 | 2 | 292 | $56,741,155 | $3,557,178 | $12,182iApproximate average salary by contribution assumption: employee only about $304,553 at 4% or $203,035 at 6%; with 50% employer match about $203,035 at 4% or $135,357 at 6%; with 100% employer match about $152,276 at 4% or $101,518 at 6%. |
| Amsc 401(K) Savings Plan | - | 292 | $56,741,155 | $3,557,178 | $12,182iApproximate average salary by contribution assumption: employee only about $304,553 at 4% or $203,035 at 6%; with 50% employer match about $203,035 at 4% or $135,357 at 6%; with 100% employer match about $152,276 at 4% or $101,518 at 6%. |
| American Superconductor Health and Welfare Plan | - | 216 | - | - | - |
| 2023 | 2 | 293 | $53,845,664 | $3,201,143 | $10,925iApproximate average salary by contribution assumption: employee only about $273,135 at 4% or $182,090 at 6%; with 50% employer match about $182,090 at 4% or $121,393 at 6%; with 100% employer match about $136,568 at 4% or $91,045 at 6%. |
| Amsc 401(K) Savings Plan | - | 293 | $53,845,664 | $3,201,143 | $10,925iApproximate average salary by contribution assumption: employee only about $273,135 at 4% or $182,090 at 6%; with 50% employer match about $182,090 at 4% or $121,393 at 6%; with 100% employer match about $136,568 at 4% or $91,045 at 6%. |
| American Superconductor Health and Welfare Plan | - | 231 | - | - | - |
| 2022 | 2 | 314 | $46,774,473 | $2,935,239 | $9,348iApproximate average salary by contribution assumption: employee only about $233,697 at 4% or $155,798 at 6%; with 50% employer match about $155,798 at 4% or $103,865 at 6%; with 100% employer match about $116,849 at 4% or $77,899 at 6%. |
| Amsc 401(K) Savings Plan | - | 314 | $46,774,473 | $2,935,239 | $9,348iApproximate average salary by contribution assumption: employee only about $233,697 at 4% or $155,798 at 6%; with 50% employer match about $155,798 at 4% or $103,865 at 6%; with 100% employer match about $116,849 at 4% or $77,899 at 6%. |
| American Superconductor Health and Welfare Plan | - | 200 | - | - | - |
| 2021 | 2 | 188 | $54,807,251 | $2,593,510 | $13,795iApproximate average salary by contribution assumption: employee only about $344,882 at 4% or $229,921 at 6%; with 50% employer match about $229,921 at 4% or $153,281 at 6%; with 100% employer match about $172,441 at 4% or $114,961 at 6%. |
| Amsc 401(K) Savings Plan | - | 188 | $54,807,251 | $2,593,510 | $13,795iApproximate average salary by contribution assumption: employee only about $344,882 at 4% or $229,921 at 6%; with 50% employer match about $229,921 at 4% or $153,281 at 6%; with 100% employer match about $172,441 at 4% or $114,961 at 6%. |
| American Superconductor Health and Welfare Plan | - | 178 | - | - | - |
| 2020 | 2 | 145 | $48,788,211 | $2,121,522 | $14,631iApproximate average salary by contribution assumption: employee only about $365,780 at 4% or $243,853 at 6%; with 50% employer match about $243,853 at 4% or $162,569 at 6%; with 100% employer match about $182,890 at 4% or $121,927 at 6%. |
| Amsc 401(K) Savings Plan | - | 145 | $48,788,211 | $2,121,522 | $14,631iApproximate average salary by contribution assumption: employee only about $365,780 at 4% or $243,853 at 6%; with 50% employer match about $243,853 at 4% or $162,569 at 6%; with 100% employer match about $182,890 at 4% or $121,927 at 6%. |
| American Superconductor Health and Welfare Plan | - | 130 | - | - | - |
| 2019 | 2 | 131 | $41,174,388 | $2,040,650 | $15,577iApproximate average salary by contribution assumption: employee only about $389,437 at 4% or $259,625 at 6%; with 50% employer match about $259,625 at 4% or $173,083 at 6%; with 100% employer match about $194,719 at 4% or $129,812 at 6%. |
| Amsc 401(K) Savings Plan | - | 131 | $41,174,388 | $2,040,650 | $15,577iApproximate average salary by contribution assumption: employee only about $389,437 at 4% or $259,625 at 6%; with 50% employer match about $259,625 at 4% or $173,083 at 6%; with 100% employer match about $194,719 at 4% or $129,812 at 6%. |
| American Superconductor Health and Welfare Plan | - | 117 | - | - | - |
| 2018 | 2 | 113 | $34,106,197 | $1,752,079 | $15,505iApproximate average salary by contribution assumption: employee only about $387,628 at 4% or $258,419 at 6%; with 50% employer match about $258,419 at 4% or $172,279 at 6%; with 100% employer match about $193,814 at 4% or $129,209 at 6%. |
| Amsc 401(K) Savings Plan | - | 113 | $34,106,197 | $1,752,079 | $15,505iApproximate average salary by contribution assumption: employee only about $387,628 at 4% or $258,419 at 6%; with 50% employer match about $258,419 at 4% or $172,279 at 6%; with 100% employer match about $193,814 at 4% or $129,209 at 6%. |
| American Superconductor Health and Welfare Plan | - | 107 | - | - | - |
| 2017 | 2 | 133 | $33,763,308 | $1,847,407 | $13,890iApproximate average salary by contribution assumption: employee only about $347,257 at 4% or $231,505 at 6%; with 50% employer match about $231,505 at 4% or $154,336 at 6%; with 100% employer match about $173,628 at 4% or $115,752 at 6%. |
| Amsc 401(K) Savings Plan | - | 133 | $33,763,308 | $1,847,407 | $13,890iApproximate average salary by contribution assumption: employee only about $347,257 at 4% or $231,505 at 6%; with 50% employer match about $231,505 at 4% or $154,336 at 6%; with 100% employer match about $173,628 at 4% or $115,752 at 6%. |
| American Superconductor Health and Welfare Plan | - | 95 | - | - | - |
| 2016 | 3 | 145 | $31,455,218 | $1,905,724 | $13,143iApproximate average salary by contribution assumption: employee only about $328,573 at 4% or $219,049 at 6%; with 50% employer match about $219,049 at 4% or $146,032 at 6%; with 100% employer match about $164,287 at 4% or $109,524 at 6%. |
| Amsc 401(K) Savings Plan | - | 145 | $31,455,218 | $1,905,724 | $13,143iApproximate average salary by contribution assumption: employee only about $328,573 at 4% or $219,049 at 6%; with 50% employer match about $219,049 at 4% or $146,032 at 6%; with 100% employer match about $164,287 at 4% or $109,524 at 6%. |
| American Superconductor Health and Welfare Plan | - | 99 | - | - | - |
| Amsc Health Reimbursement Plan | - | 124 | - | - | - |
| 2015 | 2 | 135 | $29,766,420 | $1,857,345 | $13,758iApproximate average salary by contribution assumption: employee only about $343,953 at 4% or $229,302 at 6%; with 50% employer match about $229,302 at 4% or $152,868 at 6%; with 100% employer match about $171,976 at 4% or $114,651 at 6%. |
| Amsc 401(K) Savings Plan | - | 135 | $29,766,420 | $1,857,345 | $13,758iApproximate average salary by contribution assumption: employee only about $343,953 at 4% or $229,302 at 6%; with 50% employer match about $229,302 at 4% or $152,868 at 6%; with 100% employer match about $171,976 at 4% or $114,651 at 6%. |
| American Superconductor Health and Welfare Plan | - | 94 | - | - | - |
| 2014 | 2 | 134 | $30,738,677 | $1,969,489 | $14,698iApproximate average salary by contribution assumption: employee only about $367,442 at 4% or $244,961 at 6%; with 50% employer match about $244,961 at 4% or $163,308 at 6%; with 100% employer match about $183,721 at 4% or $122,481 at 6%. |
| Amsc 401(K) Savings Plan | - | 134 | $30,738,677 | $1,969,489 | $14,698iApproximate average salary by contribution assumption: employee only about $367,442 at 4% or $244,961 at 6%; with 50% employer match about $244,961 at 4% or $163,308 at 6%; with 100% employer match about $183,721 at 4% or $122,481 at 6%. |
| American Superconductor Health and Welfare Plan | - | 96 | - | - | - |
| 2013 | 2 | 150 | $30,596,356 | $2,117,010 | $14,113iApproximate average salary by contribution assumption: employee only about $352,835 at 4% or $235,223 at 6%; with 50% employer match about $235,223 at 4% or $156,816 at 6%; with 100% employer match about $176,418 at 4% or $117,612 at 6%. |
| Amsc 401(K) Savings Plan | - | 150 | $30,596,356 | $2,117,010 | $14,113iApproximate average salary by contribution assumption: employee only about $352,835 at 4% or $235,223 at 6%; with 50% employer match about $235,223 at 4% or $156,816 at 6%; with 100% employer match about $176,418 at 4% or $117,612 at 6%. |
| American Superconductor Health and Welfare Plan | - | 94 | - | - | - |
| 2012 | 3 | 237 | $27,873,852 | $2,586,384 | $10,913iApproximate average salary by contribution assumption: employee only about $272,825 at 4% or $181,884 at 6%; with 50% employer match about $181,884 at 4% or $121,256 at 6%; with 100% employer match about $136,413 at 4% or $90,942 at 6%. |
| Amsc 401(K) Savings Plan | - | 166 | $27,873,852 | $2,586,384 | $15,581iApproximate average salary by contribution assumption: employee only about $389,516 at 4% or $259,677 at 6%; with 50% employer match about $259,677 at 4% or $173,118 at 6%; with 100% employer match about $194,758 at 4% or $129,839 at 6%. |
| Amsc Health Reimbursement Plan | - | 237 | - | - | - |
| American Superconductor Health and Welfare Plan | - | 163 | - | - | - |
| 2011 | 3 | 210 | $26,577,163 | $3,612,231 | $17,201iApproximate average salary by contribution assumption: employee only about $430,027 at 4% or $286,685 at 6%; with 50% employer match about $286,685 at 4% or $191,123 at 6%; with 100% employer match about $215,014 at 4% or $143,343 at 6%. |
| Amsc 401(K) Savings Plan | - | 210 | $26,577,163 | $3,612,231 | $17,201iApproximate average salary by contribution assumption: employee only about $430,027 at 4% or $286,685 at 6%; with 50% employer match about $286,685 at 4% or $191,123 at 6%; with 100% employer match about $215,014 at 4% or $143,343 at 6%. |
| Amsc Flexible Compensation Plan | - | 74 | - | - | - |
| American Superconductor Health and Welfare Plan | - | 209 | - | - | - |
| 2010 | 2 | 399 | $32,132,804 | $4,087,473 | $10,244iApproximate average salary by contribution assumption: employee only about $256,107 at 4% or $170,738 at 6%; with 50% employer match about $170,738 at 4% or $113,825 at 6%; with 100% employer match about $128,054 at 4% or $85,369 at 6%. |
| Amsc 401(K) Savings Plan | - | 365 | $32,132,804 | $4,087,473 | $11,199iApproximate average salary by contribution assumption: employee only about $279,964 at 4% or $186,643 at 6%; with 50% employer match about $186,643 at 4% or $124,428 at 6%; with 100% employer match about $139,982 at 4% or $93,321 at 6%. |
| American Superconductor Health and Welfare Plan | - | 399 | - | - | - |
| 2009 | 2 | 319 | $27,784,549 | $3,678,287 | $11,531iApproximate average salary by contribution assumption: employee only about $288,267 at 4% or $192,178 at 6%; with 50% employer match about $192,178 at 4% or $128,119 at 6%; with 100% employer match about $144,134 at 4% or $96,089 at 6%. |
| Amsc 401(K) Savings Plan | - | 319 | $27,784,549 | $3,678,287 | $11,531iApproximate average salary by contribution assumption: employee only about $288,267 at 4% or $192,178 at 6%; with 50% employer match about $192,178 at 4% or $128,119 at 6%; with 100% employer match about $144,134 at 4% or $96,089 at 6%. |
| American Superconductor Health and Welfare Plan | - | 309 | - | - | - |
| 2008 | 2 | 278 | $17,712,168 | $2,955,118 | $10,630iApproximate average salary by contribution assumption: employee only about $265,748 at 4% or $177,165 at 6%; with 50% employer match about $177,165 at 4% or $118,110 at 6%; with 100% employer match about $132,874 at 4% or $88,583 at 6%. |
| Amsc 401(K) Savings Plan | - | 272 | $17,712,168 | $2,955,118 | $10,864iApproximate average salary by contribution assumption: employee only about $271,610 at 4% or $181,073 at 6%; with 50% employer match about $181,073 at 4% or $120,716 at 6%; with 100% employer match about $135,805 at 4% or $90,537 at 6%. |
| American Superconductor Health and Welfare Plan | - | 278 | - | - | - |
| 2007 | 2 | 234 | $25,731,265 | $2,683,624 | $11,468iApproximate average salary by contribution assumption: employee only about $286,712 at 4% or $191,141 at 6%; with 50% employer match about $191,141 at 4% or $127,428 at 6%; with 100% employer match about $143,356 at 4% or $95,571 at 6%. |
| Amsc 401(K) Savings Plan | - | 224 | $25,731,265 | $2,683,624 | $11,980iApproximate average salary by contribution assumption: employee only about $299,512 at 4% or $199,674 at 6%; with 50% employer match about $199,674 at 4% or $133,116 at 6%; with 100% employer match about $149,756 at 4% or $99,837 at 6%. |
| American Superconductor Health and Welfare Plan | - | 234 | - | - | - |
| 2006 | 2 | 227 | $20,725,267 | $2,368,777 | $10,435iApproximate average salary by contribution assumption: employee only about $260,879 at 4% or $173,919 at 6%; with 50% employer match about $173,919 at 4% or $115,946 at 6%; with 100% employer match about $130,439 at 4% or $86,960 at 6%. |
| Amsc 401(K) Savings Plan | - | 227 | $20,725,267 | $2,368,777 | $10,435iApproximate average salary by contribution assumption: employee only about $260,879 at 4% or $173,919 at 6%; with 50% employer match about $173,919 at 4% or $115,946 at 6%; with 100% employer match about $130,439 at 4% or $86,960 at 6%. |
| American Superconductor Health and Welfare Plan | - | 227 | - | - | - |
| 2005 | 2 | 257 | $17,305,089 | $2,315,005 | $9,008iApproximate average salary by contribution assumption: employee only about $225,195 at 4% or $150,130 at 6%; with 50% employer match about $150,130 at 4% or $100,087 at 6%; with 100% employer match about $112,598 at 4% or $75,065 at 6%. |
| Amsc 401(K) Savings Plan | - | 257 | $17,305,089 | $2,315,005 | $9,008iApproximate average salary by contribution assumption: employee only about $225,195 at 4% or $150,130 at 6%; with 50% employer match about $150,130 at 4% or $100,087 at 6%; with 100% employer match about $112,598 at 4% or $75,065 at 6%. |
| American Superconductor Health and Welfare Plan | - | 241 | - | - | - |
| 2004 | 2 | 276 | $15,593,055 | $2,024,902 | $7,337iApproximate average salary by contribution assumption: employee only about $183,415 at 4% or $122,277 at 6%; with 50% employer match about $122,277 at 4% or $81,518 at 6%; with 100% employer match about $91,708 at 4% or $61,138 at 6%. |
| Amsc 401(K) Savings Plan | - | 257 | $15,593,055 | $2,024,902 | $7,879iApproximate average salary by contribution assumption: employee only about $196,975 at 4% or $131,317 at 6%; with 50% employer match about $131,317 at 4% or $87,544 at 6%; with 100% employer match about $98,487 at 4% or $65,658 at 6%. |
| American Superconductor Health and Welfare Plan | - | 276 | - | - | - |
| 2003 | 2 | 280 | $13,304,707 | $1,936,795 | $6,917iApproximate average salary by contribution assumption: employee only about $172,928 at 4% or $115,285 at 6%; with 50% employer match about $115,285 at 4% or $76,857 at 6%; with 100% employer match about $86,464 at 4% or $57,643 at 6%. |
| Amsc 401(K) Savings Plan | - | 260 | $13,304,707 | $1,936,795 | $7,449iApproximate average salary by contribution assumption: employee only about $186,230 at 4% or $124,154 at 6%; with 50% employer match about $124,154 at 4% or $82,769 at 6%; with 100% employer match about $93,115 at 4% or $62,077 at 6%. |
| American Superconductor Health and Welfare Plan | - | 280 | - | - | - |
| 2002 | 2 | 356 | $8,314,162 | $2,397,725 | $6,735iApproximate average salary by contribution assumption: employee only about $168,380 at 4% or $112,253 at 6%; with 50% employer match about $112,253 at 4% or $74,835 at 6%; with 100% employer match about $84,190 at 4% or $56,127 at 6%. |
| Amsc 401(K) Savings Plan | - | 312 | $8,314,162 | $2,397,725 | $7,685iApproximate average salary by contribution assumption: employee only about $192,125 at 4% or $128,084 at 6%; with 50% employer match about $128,084 at 4% or $85,389 at 6%; with 100% employer match about $96,063 at 4% or $64,042 at 6%. |
| American Superconductor Health and Welfare Plan | - | 356 | - | - | - |
| 2001 | 3 | 420 | $8,760,510 | $2,612,229 | $6,220iApproximate average salary by contribution assumption: employee only about $155,490 at 4% or $103,660 at 6%; with 50% employer match about $103,660 at 4% or $69,107 at 6%; with 100% employer match about $77,745 at 4% or $51,830 at 6%. |
| Amsc 401(K) Savings Plan | - | 409 | $8,760,510 | $2,612,229 | $6,387iApproximate average salary by contribution assumption: employee only about $159,672 at 4% or $106,448 at 6%; with 50% employer match about $106,448 at 4% or $70,965 at 6%; with 100% employer match about $79,836 at 4% or $53,224 at 6%. |
| American Superconductor Health and Welfare Plan | - | 420 | - | - | - |
| SUPERCONDUCTIVITY, INC. 401K PLAN | - | 0 | - | - | - |
| 2000 | 1 | 219 | $0 | $0 | - |
| Amsc 401(K) Savings Plan | - | 219 | - | - | - |