401(k)
2023 plan-year 401(k) DOL Form 5500

ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN

ERISA Form 5500 plan record drawn from DOL EBSA — verify with linked source filings below.

ALLEGRO MICROSYSTEMS

This 401(k) plan holds $235M in total assets and serves 651 participants as of 2023. It is sponsored by ALLEGRO MICROSYSTEMS in New Hampshire. The plan reported positive net income of $38M for the year.

Total Assets (2023)
$235M
Participants
651
Industry
Manufacturing

What the Filing Says About ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN

ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN is a 401(k) retirement plan sponsored by ALLEGRO MICROSYSTEMS, headquartered in New Hampshire. As of the 2023 Form 5500 filing, the plan reports $235M in total end-of-year assets and covers 651 participants across the Manufacturing industry. The sponsor's EIN on file with the U.S. Department of Labor is 223056180, and the plan has been effective since 1991-01-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets moved from $196M at the beginning of 2023 to $235M at year-end — a gain of 19.5%. Net assets (after liabilities) closed the year at $235M, with reported net income of $38M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows — a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

Financial Summary (2023)

Total Assets (Beginning of Year)$196M
Total Assets (End of Year)$235M
Net Assets (End of Year)$235M
Net Income$38M
Plan Type401(k)
Employer EIN223056180
Plan Effective Date1991-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (ALLEGRO MICROSYSTEMS)

Year Plans Participants Total Assets
2022 1 611 $196M
2023 1 651 $235M
2024 1 716 $252M

Nearby 401(k) Plans in New Hampshire

Peer 401(k) plans — same state, same plan type — ranked by total assets.

Frequently Asked Questions

How much money is in the ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN?
As of the 2023 Form 5500 filing, ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN holds $235M in total assets with 651 participants. It is sponsored by ALLEGRO MICROSYSTEMS.
What type of plan is ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN?
ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN is a 401(k) plan. It has been effective since 1991-01-01. The plan is filed with the U.S. Department of Labor under EIN 223056180.
Who sponsors the ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN?
ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN is sponsored by ALLEGRO MICROSYSTEMS, located in New Hampshire. The sponsor's EIN is 223056180 and the plan operates in the Manufacturing industry.
How did ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN perform in 2023?
ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN grew by 19.5% during 2023, moving from $196M to $235M in total assets. Net income was $38M.
Where can I find official filings for ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN?
Official Form 5500 filings for ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN are available through the U.S. Department of Labor's EFAST2 system. Search by EIN 223056180 or plan name at efast.dol.gov.
How does ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN compare to other plans?
You can compare ALLEGRO MICROSYSTEMS, LLC EMPLOYEES' RETIREMENT SAVINGS PLAN against other 401(k) plans on the plan type page, or view plans in New Hampshire on the state page. PlainRetire tracks the 5,000 largest retirement plans in the U.S. by total assets.

Explore PlainRetire

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) — original filing retrieval by EIN 223056180.

Reference: IRS Publication 560 — Retirement Plans for Small Business, contribution-limit rules.

Reference: IRS Publication 590-B — Distributions from IRAs, RMD rules under SECURE Act 2.0.

Data sourced from official public datasets. See our methodology for details.