401(k) · DOL Form 5500 · 2023

Seres Engineering & Services LLC 401(k) Plan

Data updated 2026-08-25

$4M
Total assets Small plan by assets: 143
Participants Small participant base: 40th
Percentile by assets National rank: $27,580
Avg per participant Low balance/head

PlainRetire home → About this data RSS: change history

Official DOL plan name: Seres Engineering 401(k) Plan · Sponsored by Seres Engineering & Services LLC · South Carolina · Professional & Technical Services

$4M in assets, 143 participants

Seres Engineering & Services LLC's Seres Engineering 401(k) Plan reported $4M in total assets and 143 participants in its 2023 DOL Form 5500 filing, ranking in the 40th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

#7,588 in Professional & Technical Services (20,321 peers)

Coverage in South Carolina

Seres Engineering 401(k) Plan covers 143 participants in South Carolina, about 39% of the average South Carolina filer (state average ~369 per filing). Assets: $4M.

#7,588
in Professional & Technical Services (20,321 peers): +36.6%
assets growth YoY

Seres Engineering 401(k) Plan's mid-pack asset rank among Professional & Technical Services and all filers

Seres Engineering 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$3,943,914 40th percentile higher than 40% of 127,068 filed plans

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Seres Engineering 401(k) Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Seres Engineering 401(k) Plan sits mid-pack in the medium band (143 participants).

Micro (1-10) 35,718 filings (27%) Small (11-100) 27,089 filings (21%) Medium (101-1,000) 55,445 filings (43%) Large (1,001-10,000) 10,273 filings (8%) Mega (10,000+) 1,374 filings (1%)

Seres Engineering 401(k) Plan reported net income rose from $105K in the plan year 2022 filing to $1M in the plan year 2023 filing.
Seres Engineering 401(k) Plan end-of-year assets rose from $3M in the plan year 2022 filing to $4M in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 260796919 · Seres Engineering & Services LLC PY 2023 · 401(k)

Seres Engineering 401(k) Plan · $4M · 143 · 40th

BOY $4M
SCH 143
EBSA 40th
PART 401(k)
TYPE near Morgan/Harbour Construction, L.L.C. 401(k) Plan & Trust
NET ind #7588

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in South Carolina →

End-of-year total assets ($M) among Seres Engineering 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

South Carolina filing particulars

Total Assets (Beginning of Year)	$3M
Net Assets (End of Year)	$4M
Net Income	$1M
Employer EIN	260796919
Plan Effective Date	2010-04-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Seres Engineering & Services LLC)

Latest sponsor-wide plan assets: $5M 73.48012756925702% vs 2022; 2024 filing year

Year	Plans	Participants	Total Assets
2022	1	144	$3M
2023	1	143	$4M
2024	1	147	$5M

Nearby 401(k) Plans in South Carolina

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

Seres Engineering 401(k) Plan vs. nearby 401(k) plans in South Carolina, assets vs. participants

Michelin 401(k) Savings Plan $4.1B · 14,439
The Savannah River Nuclear Solutions, LLC Defined Contribution Plan $2.5B · 8,661
Sonoco Retirement & Savings Plan $1.6B · 11,311
Sonoco Retirement & Savings Plan $1.3B · 10,614
Blue Cross Blue Shield of Sc Employee Savings and Salary Reduction Plan $1.3B · 11,348

Compare Seres Engineering 401(k) Plan side-by-side with 3 peers →

Seres Engineering 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside South Carolina, the nearest 401(k) by assets is Morgan/Harbour Construction, L.L.C. 401(k) Plan & Trust in IL ($4M); by covered participants it is Precision International Automotive Products Inc. 401 (K) Plan in NY (143 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($4M here).

Similar participant headcount

Nearest other-state filings by covered participants (143 participants); asset peers above are excluded.

Precision International Automotive Products Inc. 401 (K) Plan (NY) 143 · 0 off
Hight Enterprises, Ltd 401(k) Savings Plan (CO) 143 · 0 off
Energy Vault 401(k) Plan (CA) 143 · 0 off
Behavioral Perspective Inc 401(k) Profit Sharing Plan & Trust (IL) 143 · 0 off

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Seres Engineering 401(k) Plan assets move in 2023? ▼

Seres Engineering 401(k) Plan surged - up 36.6% during 2023, from $3M to $4M. Reported net income was $1M.

How have Seres Engineering & Services LLC plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Seres Engineering & Services LLC's sponsor-wide assets grew 73.5%, from $3M to $5M.

Which 401(k) plans are similar in size to Seres Engineering 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by assets is Morgan/Harbour Construction, L.L.C. 401(k) Plan & Trust in IL ($4M, 61 participants).

Which 401(k) plans cover a similar participant headcount to Seres Engineering 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by covered participants is Precision International Automotive Products Inc. 401 (K) Plan in NY (143 participants, $27M in assets).

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 260796919.