401(k) · DOL Form 5500 · 2022

Proterra, Inc 401(k) Plan

Data updated 2026-08-25

$33M
Total assets Below avg plan size
772
Participants Near avg headcount
84th
Percentile by assets National rank
$42,145
Avg per participant Low balance/head
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Official DOL plan name: Proterra, Inc 401(k) Plan · Sponsored by Proterra, Inc · South Carolina · Manufacturing

$33M in assets, 772 participants

Proterra, Inc's Proterra, Inc 401(k) Plan reported $33M in total assets and 772 participants in its 2022 DOL Form 5500 filing, ranking in the 84th 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.

  • #15,818 in Manufacturing (20,602 peers)

Coverage in South Carolina

Proterra, Inc 401(k) Plan covers 772 participants in South Carolina, 2.1x the typical South Carolina plan (state average ~369 per filing). Assets: $33M.

#15,818
in Manufacturing (20,602 peers)
+4.7%
assets growth YoY
0.3×
vs typical plan assets (national mean)

Proterra, Inc 401(k) Plan's outsized position by total assets

Proterra, Inc 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$32,535,603 Top 16% higher than 84% of 139,123 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 2022

Proterra, Inc 401(k) Plan among mid-size filed plans by headcount

Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Proterra, Inc 401(k) Plan sits mid-pack in the medium band (772 participants).

Published 5500 schedule card

Filing strip 271878459 · Proterra, Inc PY 2022 · 401(k)

Proterra, Inc 401(k) Plan · $33M · 772 · 84th

  • NET $33M
  • NET 772
  • NET 84th
  • NET 401(k)
  • NET near Alliance Shippers, Inc. 401(k) Savings Plan
  • NET ind #15818

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 Manufacturing retirement plans → · Plans in South Carolina →

Proterra, Inc 401(k) Plan in the asset neighbourhood

Proterra, Inc 401(k) Plan$33MAlliance Shippers, Inc. 401(k) Savings PlanAlliance Shippers, Inc. 401(…$33MU.S. Physical Therapy, Inc. 401(k) Gold PlanU.S. Physical Therapy, Inc. …$33MAllegiance Health Management Retirement Savings PlanAllegiance Health Management…$33MMacatawa Bank 401(k) Plan$33M
End-of-year total assets ($M) among Proterra, Inc 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

South Carolina filing particulars

Total Assets (Beginning of Year)$31M
Net Assets (End of Year)$33M
Net Income$1M
Employer EIN271878459
Plan Effective Date2013-03-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Proterra, Inc)

Sponsor-wide plan assets over time

All Proterra, Inc plans reported in each filing year

Latest sponsor-wide plan assets
$136K 99.58339484287413% vs 2022
2024 filing year
$0M$20M$40M$60M 202220232024 $32.5M $0.14M ▼ -99.6%
Year Plans Participants Total Assets
2022 1 772 $33M
2023 1 1,099 $40M
2024 1 343 $136K

Nearby 401(k) Plans in South Carolina

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

Proterra, Inc 401(k) Plan vs. nearby 401(k) plans in South Carolina, assets vs. participants Scatter plot of 6 data points. 050001000015000 -101234 Total assets ($B) Participants Proterra, Inc 401(k) Plan, Total assets ($B): 0.032535603 · Participants: 772Proterra, Inc 401(k) PlanMichelin 401(k) Savings Plan, Total assets ($B): 3.615828322 · Participants: 13708Michelin 401(k) Savings PlanThe Savannah River Nuclear Solutions, LLC Defined Contribution Plan, Total assets ($B): 2.219673264 · Participants: 7829The Savannah River Nuclear Solutions, LLC Defined Contribution PlanSonoco Retirement & Savings Plan, Total assets ($B): 1.214442524 · Participants: 9714Sonoco Retirement & Savings PlanThe Milliken Retirement Plan, Total assets ($B): 1.154082573 · Participants: 6185The Milliken Retirement PlanBlue Cross Blue Shield of Sc Employee Savings and Salary Reduction Plan, Total assets ($B): 1.085276125 · Participants: 11881Blue Cross Blue Shield of Sc Employee Savings and Salary Reduction Plan
Proterra, Inc 401(k) Plan vs. nearby 401(k) plans in South Carolina, assets vs. participants
Compare Proterra, Inc 401(k) Plan side-by-side with 3 peers →

Proterra, Inc 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside South Carolina, the nearest 401(k) by assets is Alliance Shippers, Inc. 401(k) Savings Plan in NJ ($33M); by covered participants it is Guardian Life Employees Incentive Savings Plan in NY (772 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($33M here).

Similar participant headcount

Nearest other-state filings by covered participants (772 participants); asset peers above are excluded.

DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Proterra, Inc 401(k) Plan assets move in 2022? ▼
Proterra, Inc 401(k) Plan edged up modestly - up 4.7% during 2022, from $31M to $33M. Reported net income was $1M.
How have Proterra, Inc plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Proterra, Inc's sponsor-wide assets declined 99.6%, from $33M to $136K.
Where does Proterra, Inc 401(k) Plan rank by assets among Form 5500 filers? ▼
Proterra, Inc 401(k) Plan ranks in the 84th percentile by end-of-year assets among 139,126 plans that reported assets for plan year 2022 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Proterra, Inc 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Alliance Shippers, Inc. 401(k) Savings Plan in NJ ($33M, 342 participants).
Which 401(k) plans cover a similar participant headcount to Proterra, Inc 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Guardian Life Employees Incentive Savings Plan in NY (772 participants, $644M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 271878459.

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.