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| Company Name: | ALLEGRO MICROSYSTEMS |
| Employer identification number (EIN): | 223056180 |
| NAIC Classification: | 334410 |
The following addresses have been detected on the 401k submissions:
| USA Mailing Address | |||||
|---|---|---|---|---|---|
| |||||
| Date first seen: 2007-01-01 | |||||
| Date last seen: 2025-07-31 | |||||
| USA Mailing Address | |||||
|---|---|---|---|---|---|
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| Date first seen: 2007-01-01 | |||||
| Date last seen: 2026-01-05 | |||||
| USA Location Address | |||||
|---|---|---|---|---|---|
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| Date first seen: 2007-01-01 | |||||
| Date last seen: 2025-07-31 | |||||
| USA Mailing Address | |||||
|---|---|---|---|---|---|
| |||||
| Date first seen: 2010-07-01 | |||||
| Date last seen: 2025-09-30 | |||||
The following addresses have been found in other jurisdictions:
| Jurisdiction: | California Department of State | ||||
| Address: |
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| Jurisdiction Company ID: | |||||
| Jurisdiction Registration Date: |
| Date | Description |
|---|---|
| 2021-10-08 | 223056180 Change of name detected from ALLEGRO MICROSYSTEMS, LLC to ALLEGRO MICROSYSTEMS |
| 2021-08-04 | 223056180 Change of name detected from ALLEGRO MICROSYSTEMS to ALLEGRO MICROSYSTEMS, LLC |
| Plan id# | Plan Name | Plan Start Date | Plan Effective Date |
|---|---|---|---|
| 001 | ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN | 2015-01-01 | 1991-01-01 |
| 501 | ALLEGRO MICROSYSTEMS, LLC EMPLOYEES HEALTH AND WELFARE PLAN | 2015-01-01 | 1991-01-01 |
| 002 | ALLEGRO MICROSYSTEMS INC RETIREMENT SUCCESSOR PLAN | 2014-01-01 | 1991-01-01 |
| 507 | ALLEGRO MICROSYSTEMS, LLC SUPPLEMENTAL HEALTHCARE EXPENSE PLAN | 2013-01-01 | 1991-01-01 |
| 510 | ALLEGRO MICROSYSTEMS, LLC SALARIED EMPLOYEES SEVERANCE PLAN | 2013-01-01 | 1991-01-01 |
| Date | Type of contribution | Contribution | Number of participants/employees | Average contribution per participant | |
|---|---|---|---|---|---|
| 2011-04-17 | Employer Contributions | $ 66,973 | 789 | $ 85 | |
| 2011-04-17 | Employee Contributions | $ 66,973 | 789 | $ 85 | |
| 2011-04-12 | Employer Contributions | $ 6,000 | 789 | $ 8 | |
| 2011-04-12 | Employee Contributions | $ 6,000 | 789 | $ 8 | |
| 2010-03-15 | Employer Contributions | $ 186,000 | 213 | $ 873 | |
| 2010-03-15 | Employee Contributions | $ 186,000 | 213 | $ 873 |
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