How big is Sionyx LLC's plan?

Sionyx LLC's plan reported $4.7M in assets and 33 participants for 2024.

Original filing (PDF)20250924140133NAL0017256018001

Sionyx LLC

Name: Sionyx LLC — Sionyx LLC 401(k) Plan, Form 5500 (2024)
Creator: Sionyx LLC
License: https://www.usa.gov/government-works

Form 5500-SF

FILING_RECEIVED

Sionyx LLC 401(k) Plan

401(k) retirement plan · Sionyx LLC's Sionyx LLC 401(k) Plan held $4.7M in plan assets for 33 participants in 2024.

Active participants

Accounts w/ balance

Plan assets (EOY)

$4.7M

Net assets (EOY)

$4.7M

People on this filing

John Howard signed Sionyx LLC's 2024 Form 5500 as plan administrator.

John Howard — Plan Administrator — Form 5500 signer

Get verified email & phone for these signers

Signer names are public record from the Form 5500 e-signature.

Plan identifiers

Sionyx LLC's EIN is 20-2316261.

EIN 20-2316261

Plan number 001

Plan year 2024

ACK ID 20250924140133NAL0017256018001

Official Form 5500 document

Download the official 2024 Form 5500 (PDF) for Sionyx LLC from the U.S. Department of Labor's EFAST2 system.

Download the official 2024 Form 5500 (PDF)

Plan features

Sionyx LLC's plan includes profit-sharing, ERISA 404(c) participant direction, a 401(k) feature, a default investment (QDIA).

Decision-maker contacts

One unlock reveals every key decision-maker — plan signer, CFO, HR & Benefits — with verified email + LinkedIn for SIONYX LLC.

Finding similar companies…

Plan health score

Top-tier plan health

Directional indicator from public Form 5500 data — compliance & integrity, total plan cost, participant health and vendor stack, benchmarked against same-size peers. Not a fiduciary tool. Based on 70% of scoring inputs for this filing.

Compliance & integrity

100

Total plan cost

n/a

Plan health

Vendor & structure

100

Helping the score

Cost not scored — no comparable Schedule H expense data for this cohort.

Plan sponsor

Name

SIONYX LLC

EIN

all filings

Address

100 CUMMINGS CENTER · SUITE 303B · BEVERLY, MA · 01915

Phone

(978) 922-0684

Industry

Manufacturing

Plan administrator

Same as plan sponsor.

Plan characteristics

Plan number

001

Plan year

2024

Plan year begin

2024-01-01

Tax period

2024-12-31

Filed

2025-09-24

Pension benefit codes

2E · Profit-sharing

2F · ERISA section 404(c)

2G · Total participant-directed accounts

2J · 401(k) feature

2T · Default investment account (QDIA)

3D · Pre-approved plan (master / prototype / VS)

Audit & trust (Schedule H)

Auditor

—

Trustee / custodian

Service providers (Schedule C)

Small plans don't disclose service providers

Related plans

Similar-size Manufacturing plans

Japan Machine Tools Corporation

Japan Machine Tools 401(k) Profit Sharing Plan

$4.8M · 18 participants

WIDE Band Systems, Inc.

WIDE Band Systems, Inc. 401(k) Plan

$4.7M · 11 participants

Vlsip Technologies, Inc.

Vlsip Technologies, Inc. 401(k) Retirement Savings Plan

$4.7M · 69 participants

Lightel Technologies

Lightel Technologies, Inc. Retirement Plan

$4.7M · 32 participants

Advanced Manufacturing Technologies , Inc.

Advanced Manufacturing Technologies, Inc. 401(k) Plan

Researching more plans? Run a look up another company's Form 5500 by company name, EIN, or plan name.