401(k) · DOL Form 5500 · 2023

Terraphase Engineering 401(k) Plan

Data updated 2026-08-25

$25M
Total assets Below avg plan size
121
Participants Small participant base
77th
Percentile by assets National rank
$207,635
Avg per participant Above avg balance/head
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Official DOL plan name: Terraphase Engineering 401(k) Plan · Sponsored by Terraphase Engineering · California · Professional & Technical Services

$25M in assets, 121 participants

Terraphase Engineering's Terraphase Engineering 401(k) Plan reported $25M in total assets and 121 participants in its 2023 DOL Form 5500 filing, ranking in the 77th 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.

  • #15,615 in Professional & Technical Services (20,321 peers)

Coverage in California

Terraphase Engineering 401(k) Plan covers 121 participants in California, about 19% of the average California filer (state average ~630 per filing). Assets: $25M.

#15,615
in Professional & Technical Services (20,321 peers)
+63.6%
assets growth YoY
0.3×
vs typical plan assets (national mean)

Terraphase Engineering 401(k) Plan's outsized position by total assets

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

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

$25,123,863 Top 23% higher than 77% 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

Terraphase 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. Terraphase Engineering 401(k) Plan sits mid-pack in the medium band (121 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Terraphase Engineering 401(k) Plan reported net income rose from -$595K in the plan year 2022 filing to $5M in the plan year 2023 filing.
  • Terraphase Engineering 401(k) Plan end-of-year assets rose from $15M in the plan year 2022 filing to $25M in the plan year 2023 filing.
  • Terraphase Engineering 401(k) Plan reported participants rose from 111 in the plan year 2022 filing to 121 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 273543127 · Terraphase Engineering PY 2023 · 401(k)

Terraphase Engineering 401(k) Plan · $25M · 121 · 77th

  • PHOTO $25M
  • IND 121
  • EOY 77th
  • 5500 401(k)
  • ASSETS near Aspen Surgical Products Holdings, Inc. 401(k) Plan
  • PCT ind #15615

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 California →

Terraphase Engineering 401(k) Plan in the asset neighbourhood

Terraphase Engineering 401(k) PlanTerraphase Engineering 401(k…$25MAspen Surgical Products Holdings, Inc. 401(k) PlanAspen Surgical Products Hold…$25MJdrc Managed Services, LLC 401(k) PlanJdrc Managed Services, LLC 4…$25MAmerican Federal Bank 401(k) Profit Sharing PlanAmerican Federal Bank 401(k)…$25MPioneer Technical Services, Inc. 401(k) Profit Sharing PlanPioneer Technical Services, …$25M
End-of-year total assets ($M) among Terraphase Engineering 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

California filing particulars

Total Assets (Beginning of Year)$15M
Net Assets (End of Year)$25M
Net Income$5M
Employer EIN273543127
Plan Effective Date2011-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Terraphase Engineering)

Sponsor-wide plan assets over time

All Terraphase Engineering plans reported in each filing year

Latest sponsor-wide plan assets
$30M 97.34536919513647% vs 2022
2024 filing year
$10M$15M$20M$25M$30M$35M 202220232024 $15.4M $30.3M ▲ +97.4%
Year Plans Participants Total Assets
2022 1 111 $15M
2023 1 121 $25M
2024 1 152 $30M

Nearby 401(k) Plans in California

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

Terraphase Engineering 401(k) Plan vs. nearby 401(k) plans in California, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000250000 -200204060 Total assets ($B) Participants Terraphase Engineering 401(k) Plan, Total assets ($B): 0.025123863 · Participants: 121Terraphase Engineering 401(k) PlanWells Fargo & Company 401(k) Plan, Total assets ($B): 51.831350351 · Participants: 193919Wells Fargo & Company 401(k) PlanGoogle LLC 401(k) Savings Plan, Total assets ($B): 39.047152408 · Participants: 122867Google LLC 401(k) Savings PlanOracle Corporation 401(k) Savings and Investment Plan, Total assets ($B): 26.320437734 · Participants: 63105Oracle Corporation 401(k) Savings and Investment PlanIntel 401(k) Savings Plan, Total assets ($B): 22.17918189 · Participants: 59863Intel 401(k) Savings PlanApple 401(k) Plan, Total assets ($B): 19.779511539 · Participants: 106111Apple 401(k) Plan
Terraphase Engineering 401(k) Plan vs. nearby 401(k) plans in California, assets vs. participants
Compare Terraphase Engineering 401(k) Plan side-by-side with 3 peers →

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

Outside California, the nearest 401(k) by assets is Aspen Surgical Products Holdings, Inc. 401(k) Plan in MI ($25M); by covered participants it is Redwood School & Rehabilitation Center, Inc. 401(k) Plan in OH (121 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (121 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 Terraphase Engineering 401(k) Plan assets move in 2023? ▼
Terraphase Engineering 401(k) Plan surged - up 63.6% during 2023, from $15M to $25M. Reported net income was $5M.
How have Terraphase Engineering plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Terraphase Engineering's sponsor-wide assets grew 97.3%, from $15M to $30M.
Where does Terraphase Engineering 401(k) Plan rank by assets among Form 5500 filers? ▼
Terraphase Engineering 401(k) Plan ranks in the 77th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Terraphase Engineering 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Aspen Surgical Products Holdings, Inc. 401(k) Plan in MI ($25M, 310 participants).
Which 401(k) plans cover a similar participant headcount to Terraphase Engineering 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Redwood School & Rehabilitation Center, Inc. 401(k) Plan in OH (121 participants, N/A 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 273543127.

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.