401(k) · DOL Form 5500 · 2024

Mimecast North America, Inc. 401(k) Plan

Data updated 2026-08-25

$93M
Total assets Below avg plan size
840
Participants Near avg headcount
90th
Percentile by assets National rank
$110,836
Avg per participant Below avg balance/head
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Official DOL plan name: Mimecast North America, Inc. 401(k) Plan · Sponsored by Mimecast North America, Inc. · Massachusetts · Professional & Technical Services

$93M in assets, 840 participants

Mimecast North America, Inc.'s Mimecast North America, Inc. 401(k) Plan reported $93M in total assets and 840 participants in its 2024 DOL Form 5500 filing, ranking in the 90th 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.

  • #18,356 in Professional & Technical Services (20,173 peers)

Where Mimecast North America, Inc. 401(k) Plan sits by assets

Mimecast North America, Inc. 401(k) Plan sits in the top 10% of all filed plans by assets, $93M for 840 participants (~$110,836/participant), up 32.9% in 2024.

#18,356
in Professional & Technical Services (20,173 peers)
+32.9%
assets growth YoY
0.9×
vs typical plan assets (national mean)

Mimecast North America, Inc. 401(k) Plan's outsized position by total assets

Mimecast North America, Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$93,101,932 Top 10% higher than 90% of 123,620 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 2024

Mimecast North America, Inc. 401(k) Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Mimecast North America, Inc. 401(k) Plan sits mid-pack in the medium band (840 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Mimecast North America, Inc. 401(k) Plan end-of-year assets rose from $70M in the plan year 2023 filing to $93M in the plan year 2024 filing.
  • Mimecast North America, Inc. 401(k) Plan reported net income rose from $21M in the plan year 2023 filing to $22M in the plan year 2024 filing.
  • Mimecast North America, Inc. 401(k) Plan reported participants fell from 903 in the plan year 2023 filing to 840 in the plan year 2024 filing.

See the national 2023→2024 release diff →

EBSA filing schedule strip

Filing strip 260851633 · Mimecast North America, Inc. PY 2024 · 401(k)

Mimecast North America, Inc. 401(k) Plan · $93M · 840 · 90th

  • RANK $93M
  • RANK 840
  • RANK 90th
  • RANK 401(k)
  • RANK near Tindall Savings and Profit Sharing Plan
  • RANK ind #18356

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 Massachusetts →

Mimecast North America, Inc. 401(k) Plan in the asset neighbourhood

Anderson Holdings 401(k) Savings PlanAnderson Holdings 401(k) Sav…$93MKyocera Industrial Tools, Inc. 401(k) PlanKyocera Industrial Tools, In…$93MTindall Savings and Profit Sharing PlanTindall Savings and Profit S…$93MMimecast North America, Inc. 401(k) PlanMimecast North America, Inc.…$93MWilliam a. Hazel, Inc. 401(k) Incentive and Savings PlanWilliam a. Hazel, Inc. 401(k…$93M
End-of-year total assets ($M) among Mimecast North America, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$70M
Net Assets (End of Year)$93M
Net Income$22M
Employer EIN260851633
Plan Effective Date2009-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mimecast North America, Inc.)

Sponsor-wide plan assets over time

All Mimecast North America, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$93M 88.18638117963408% vs 2022
2024 filing year
$40M$60M$80M$100M 202220232024 $49.5M $93.1M ▲ +88.2%
Year Plans Participants Total Assets
2022 1 694 $49M
2023 1 903 $70M
2024 1 840 $93M

Nearby 401(k) Plans in Massachusetts

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

Mimecast North America, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Mimecast North America, Inc. 401(k) Plan, Total assets ($B): 0.093101932 · Participants: 840Mimecast North America, Inc. 401(k) PlanFidelity Retirement Savings Plan, Total assets ($B): 34.201609937 · Participants: 66907Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 11.352606499 · Participants: 34618Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 7.720373045 · Participants: 14762Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 6.775289067 · Participants: 20639Boston Scientific Corporation 401(k) Retirement Savings PlanState Street Salary Savings Program, Total assets ($B): 6.532301643 · Participants: 12777State Street Salary Savings Program
Mimecast North America, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Mimecast North America, Inc. 401(k) Plan side-by-side with 3 peers →

Mimecast North America, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Tindall Savings and Profit Sharing Plan in SC ($93M); by covered participants it is May Trucking Co. Employee Retirement Plan in OR (840 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (840 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Mimecast North America, Inc. 401(k) Plan assets move in 2024? ▼
Mimecast North America, Inc. 401(k) Plan surged - up 32.9% during 2024, from $70M to $93M. Reported net income was $22M.
How have Mimecast North America, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mimecast North America, Inc.'s sponsor-wide assets grew 88.2%, from $49M to $93M.
Where does Mimecast North America, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
Mimecast North America, Inc. 401(k) Plan ranks in the 90th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Mimecast North America, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Tindall Savings and Profit Sharing Plan in SC ($93M, 1,167 participants).
Which 401(k) plans cover a similar participant headcount to Mimecast North America, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is May Trucking Co. Employee Retirement Plan in OR (840 participants, $24M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 260851633.

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.