Current Snapshot
Latest Year
2024
2024 Participants
2,727
2024 Assets
$462,383,208
2024 Contributions
$91,027,452
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 | 1 | 2,727 | $0 | $0 | - |
| Alexion Pharmaceuticals Inc. Severance Plan | - | 2,727 | - | - | - |
| 2023 | 4 | 2,712 | $0 | $91,027,452 | $33,565iApproximate average salary by contribution assumption: employee only about $839,117 at 4% or $559,412 at 6%; with 50% employer match about $559,412 at 4% or $372,941 at 6%; with 100% employer match about $419,559 at 4% or $279,706 at 6%. |
| THE ALEXION PHARMACEUTICALS, INC. GROUP INSURANCE PLAN | - | 0 | - | - | - |
| Alexion Pharmaceuticals Inc. Severance Plan | - | 2,712 | - | - | - |
| THE ALEXION PHARMACEUTICALS, INC. FLEXIBLE SPENDING ACCOUNTS | - | 0 | - | - | - |
| ALEXION 401(K) PLAN | - | 0 | - | $91,027,452 | - |
| 2022 | 6 | 2,523 | $462,383,208 | $87,006,479 | $34,485iApproximate average salary by contribution assumption: employee only about $862,133 at 4% or $574,755 at 6%; with 50% employer match about $574,755 at 4% or $383,170 at 6%; with 100% employer match about $431,067 at 4% or $287,378 at 6%. |
| ALEXION 401(K) PLAN | - | 2,509 | $462,383,208 | $87,006,479 | $34,678iApproximate average salary by contribution assumption: employee only about $866,944 at 4% or $577,963 at 6%; with 50% employer match about $577,963 at 4% or $385,308 at 6%; with 100% employer match about $433,472 at 4% or $288,981 at 6%. |
| Alexion Pharmaceuticals Inc. Business Travel Accident Plan | - | 0 | - | - | - |
| THE ALEXION PHARMACEUTICALS, INC. GROUP INSURANCE PLAN | - | 2,523 | - | - | - |
| THE ALEXION PHARMACEUTICALS, INC. FLEXIBLE SPENDING ACCOUNTS | - | 711 | - | - | - |
| ALEXION PHARMACEUTICALS, INC. SEVERANCE PLAN | - | 0 | - | - | - |
| Alexion Pharmaceuticals Inc. Severance Plan | - | 2,523 | - | - | - |
| 2021 | 5 | 2,372 | $512,774,918 | $94,089,936 | $39,667iApproximate average salary by contribution assumption: employee only about $991,673 at 4% or $661,115 at 6%; with 50% employer match about $661,115 at 4% or $440,744 at 6%; with 100% employer match about $495,837 at 4% or $330,558 at 6%. |
| ALEXION 401(K) PLAN | - | 2,372 | $512,774,918 | $94,089,936 | $39,667iApproximate average salary by contribution assumption: employee only about $991,673 at 4% or $661,115 at 6%; with 50% employer match about $661,115 at 4% or $440,744 at 6%; with 100% employer match about $495,837 at 4% or $330,558 at 6%. |
| THE ALEXION PHARMACEUTICALS, INC. FLEXIBLE SPENDING ACCOUNTS | - | 676 | - | - | - |
| Alexion Pharmaceuticals Inc. Business Travel Accident Plan | - | 2,363 | - | - | - |
| ALEXION PHARMACEUTICALS, INC. SEVERANCE PLAN | - | 2,211 | - | - | - |
| THE ALEXION PHARMACEUTICALS, INC. GROUP INSURANCE PLAN | - | 2,363 | - | - | - |