401(k) · DOL Form 5500 · 2023

Mountainside Treatment Center 401(k) Plan

Data updated 2026-08-25

$8M
Total assets Small plan by assets
312
Participants Below avg headcount
55th
Percentile by assets National rank
$26,889
Avg per participant Low balance/head
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Official DOL plan name: Mountainside Retirement Savings Plan · Sponsored by Mountainside Treatment Center · Connecticut · Healthcare & Social Assistance

$8M in assets, 312 participants

Mountainside Treatment Center's Mountainside Retirement Savings Plan reported $8M in total assets and 312 participants in its 2023 DOL Form 5500 filing, ranking in the 55th 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.

  • #10,673 in Healthcare & Social Assistance (17,684 peers)

Coverage in Connecticut

Mountainside Retirement Savings Plan covers 312 participants in Connecticut, about 43% of the average Connecticut filer (state average ~718 per filing). Assets: $8M.

#10,673
in Healthcare & Social Assistance (17,684 peers)
+17.2%
assets growth YoY

Mountainside Retirement Savings Plan's mid-pack asset rank among Healthcare & Social Assistance and all filers

Mountainside Retirement Savings Plan vs every filed plan by assets

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

$8,389,304 Top 45% higher than 55% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

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

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

Mountainside Retirement Savings 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. Mountainside Retirement Savings Plan sits mid-pack in the medium band (312 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Mountainside Retirement Savings Plan reported net income rose from -$202K in the plan year 2022 filing to $1M in the plan year 2023 filing.
  • Mountainside Retirement Savings Plan end-of-year assets rose from $7M in the plan year 2022 filing to $8M in the plan year 2023 filing.
  • Mountainside Retirement Savings Plan reported participants rose from 301 in the plan year 2022 filing to 312 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 270334267 · Mountainside Treatment Center PY 2023 · 401(k)

Mountainside Retirement Savings Plan · $8M · 312 · 55th

  • IND $8M
  • IND 312
  • IND 55th
  • IND 401(k)
  • IND near Mesquite Gaming, LLC 401(k) Plan
  • IND ind #10673

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 Healthcare & Social Assistance retirement plans → · Plans in Connecticut →

Mountainside Retirement Savings Plan in the asset neighbourhood

Mountainside Retirement Savings PlanMountainside Retirement Savi…$8MMesquite Gaming, LLC 401(k) PlanMesquite Gaming, LLC 401(k) …$8M401(a) Thrift Plan of Southeastern Michigan Health Association401(a) Thrift Plan of Southe…$8MBeyel Brothers, Inc. 401(k) PlanBeyel Brothers, Inc. 401(k) …$8MFarragut Systems 401(k) Plan$8M
End-of-year total assets ($M) among Mountainside Retirement Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Connecticut filing particulars

Total Assets (Beginning of Year)$7M
Net Assets (End of Year)$8M
Net Income$1M
Employer EIN270334267
Plan Effective Date2002-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mountainside Treatment Center)

Sponsor-wide plan assets over time

All Mountainside Treatment Center plans reported in each filing year

Latest sponsor-wide plan assets
$10M 41.765413300325314% vs 2022
2024 filing year
$6M$7M$8M$9M$10M$11M 202220232024 $7.16M $10.2M ▲ +41.8%
Year Plans Participants Total Assets
2022 1 301 $7M
2023 1 312 $8M
2024 1 335 $10M

Nearby 401(k) Plans in Connecticut

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

Mountainside Retirement Savings Plan vs. nearby 401(k) plans in Connecticut, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000 -200204060 Total assets ($B) Participants Mountainside Retirement Savings Plan, Total assets ($B): 0.008389304 · Participants: 312Mountainside Retirement Savings PlanRtx Savings Plan, Total assets ($B): 52.759784 · Participants: 123037Rtx Savings PlanCiti Retirement Savings Plan, Total assets ($B): 20.653030659 · Participants: 77865Citi Retirement Savings PlanThe Hartford Investment and Savings Plan, Total assets ($B): 6.478512 · Participants: 18377The Hartford Investment and Savings PlanXerox Corporation Savings Plan, Total assets ($B): 3.948866 · Participants: 10291Xerox Corporation Savings PlanEversource 401(k) Plan, Total assets ($B): 3.751712453 · Participants: 9504Eversource 401(k) Plan
Mountainside Retirement Savings Plan vs. nearby 401(k) plans in Connecticut, assets vs. participants
Compare Mountainside Retirement Savings Plan side-by-side with 3 peers →

Mountainside Retirement Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Connecticut, the nearest 401(k) by assets is Mesquite Gaming, LLC 401(k) Plan in NV ($8M); by covered participants it is Power Auto Inc. 401(k) Plan in OR (312 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($8M here).

Similar participant headcount

Nearest other-state filings by covered participants (312 participants); asset peers above are excluded.

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 Mountainside Retirement Savings Plan assets move in 2023? ▼
Mountainside Retirement Savings Plan grew sharply - up 17.2% during 2023, from $7M to $8M. Reported net income was $1M.
How have Mountainside Treatment Center plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mountainside Treatment Center's sponsor-wide assets grew 41.8%, from $7M to $10M.
Which 401(k) plans are similar in size to Mountainside Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Mesquite Gaming, LLC 401(k) Plan in NV ($8M, 1,029 participants).
Which 401(k) plans cover a similar participant headcount to Mountainside Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Power Auto Inc. 401(k) Plan in OR (312 participants, $6M 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 270334267.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.