Current Snapshot
Latest Year
2024
2024 Participants
69
2024 Assets
$32,316,456
2024 Contributions
$3,549,333
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 | 69 | $32,316,456 | $3,549,333 | $51,440iApproximate average salary by contribution assumption: employee only about $1,285,990 at 4% or $857,327 at 6%; with 50% employer match about $857,327 at 4% or $571,551 at 6%; with 100% employer match about $642,995 at 4% or $428,663 at 6%. |
| 2Seventy Bio Inc. 401(K) Plan | - | 69 | $32,316,456 | $3,549,333 | $51,440iApproximate average salary by contribution assumption: employee only about $1,285,990 at 4% or $857,327 at 6%; with 50% employer match about $857,327 at 4% or $571,551 at 6%; with 100% employer match about $642,995 at 4% or $428,663 at 6%. |
| 2Seventy Bio Inc. Health and Welfare Plan | - | 69 | - | - | - |
| 2023 | 2 | 433 | $44,433,833 | $11,256,417 | $25,996iApproximate average salary by contribution assumption: employee only about $649,909 at 4% or $433,272 at 6%; with 50% employer match about $433,272 at 4% or $288,848 at 6%; with 100% employer match about $324,954 at 4% or $216,636 at 6%. |
| 2Seventy Bio Inc. 401(K) Plan | - | 276 | $44,433,833 | $11,256,417 | $40,784iApproximate average salary by contribution assumption: employee only about $1,019,603 at 4% or $679,735 at 6%; with 50% employer match about $679,735 at 4% or $453,157 at 6%; with 100% employer match about $509,801 at 4% or $339,868 at 6%. |
| 2Seventy Bio Inc. Health and Welfare Plan | - | 433 | - | - | - |
| 2022 | 2 | 413 | $30,277,729 | $10,811,096 | $26,177iApproximate average salary by contribution assumption: employee only about $654,425 at 4% or $436,283 at 6%; with 50% employer match about $436,283 at 4% or $290,855 at 6%; with 100% employer match about $327,212 at 4% or $218,142 at 6%. |
| 2Seventy Bio Inc. 401(K) Plan | - | 413 | $30,277,729 | $10,811,096 | $26,177iApproximate average salary by contribution assumption: employee only about $654,425 at 4% or $436,283 at 6%; with 50% employer match about $436,283 at 4% or $290,855 at 6%; with 100% employer match about $327,212 at 4% or $218,142 at 6%. |
| 2Seventy Bio Inc. Health and Welfare Plan | - | 408 | - | - | - |
| 2021 | 2 | 425 | $29,315,412 | $3,739,818 | $8,800iApproximate average salary by contribution assumption: employee only about $219,989 at 4% or $146,660 at 6%; with 50% employer match about $146,660 at 4% or $97,773 at 6%; with 100% employer match about $109,995 at 4% or $73,330 at 6%. |
| 2Seventy Bio Inc. 401(K) Plan | - | 416 | $29,315,412 | $3,739,818 | $8,990iApproximate average salary by contribution assumption: employee only about $224,749 at 4% or $149,832 at 6%; with 50% employer match about $149,832 at 4% or $99,888 at 6%; with 100% employer match about $112,374 at 4% or $74,916 at 6%. |
| 2Seventy Bio Inc. Health and Welfare Plan | - | 425 | - | - | - |