401(k) · DOL Form 5500 · 2023

Armstrong Teasdale LLP 401(k) Plan

Data updated 2026-08-25

$158M
Total assets Near avg plan size
602
Participants Below avg headcount
94th
Percentile by assets National rank
$262,393
Avg per participant High balance/head
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Official DOL plan name: Armstrong & Teasdale 401(k) Plan · Sponsored by Armstrong Teasdale LLP · Missouri · Professional & Technical Services

$158M in assets, 602 participants

Armstrong Teasdale LLP's Armstrong & Teasdale 401(k) Plan reported $158M in total assets and 602 participants in its 2023 DOL Form 5500 filing, ranking in the 94th 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.

  • #19,301 in Professional & Technical Services (20,321 peers)

Where Armstrong & Teasdale 401(k) Plan sits by assets

Armstrong & Teasdale 401(k) Plan sits in the top 10% of all filed plans by assets, $158M for 602 participants (~$262,393/participant), up 22.1% in 2023.

#19,301
in Professional & Technical Services (20,321 peers)
+22.1%
assets growth YoY
1.6×
vs typical plan assets (national mean)

Armstrong & Teasdale 401(k) Plan's outsized position by total assets

Armstrong & Teasdale 401(k) Plan vs every filed plan by assets

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

$157,960,445 Top 6% higher than 94% 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

Armstrong & Teasdale 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. Armstrong & Teasdale 401(k) Plan sits mid-pack in the medium band (602 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Armstrong & Teasdale 401(k) Plan reported net income rose from -$27M in the plan year 2022 filing to $29M in the plan year 2023 filing.
  • Armstrong & Teasdale 401(k) Plan end-of-year assets rose from $129M in the plan year 2022 filing to $158M in the plan year 2023 filing.
  • Armstrong & Teasdale 401(k) Plan reported participants rose from 522 in the plan year 2022 filing to 602 in the plan year 2023 filing.

See the national 2022→2023 release diff →

EBSA filing schedule strip

Filing strip 431274026 · Armstrong Teasdale LLP PY 2023 · 401(k)

Armstrong & Teasdale 401(k) Plan · $158M · 602 · 94th

  • EOY $158M
  • 5500 602
  • ASSETS 94th
  • PCT 401(k)
  • EIN near Miller & Chevalier, Chartered Cash or Deferred Profit Sharing Plan
  • RANK ind #19301

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 Missouri →

Armstrong & Teasdale 401(k) Plan in the asset neighbourhood

Walbec Group Retirement Plan$158MMiller & Chevalier, Chartered Cash or Deferred Profit Sharing PlanMiller & Chevalier, Chartere…$158MArmstrong & Teasdale 401(k) PlanArmstrong & Teasdale 401(k) …$158MStructural Group, Inc. 401(k) Savings Plan and TrustStructural Group, Inc. 401(k…$158MCambrex Corporation Savings PlanCambrex Corporation Savings …$158M
End-of-year total assets ($M) among Armstrong & Teasdale 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$129M
Net Assets (End of Year)$158M
Net Income$29M
Employer EIN431274026
Plan Effective Date1994-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Armstrong Teasdale LLP)

Sponsor-wide plan assets over time

All Armstrong Teasdale LLP plans reported in each filing year

Latest sponsor-wide plan assets
$294M 36.876751931452176% vs 2022
2024 filing year
$200M$250M$300M$350M 202220232024 $215M $294M ▲ +36.9%
Year Plans Participants Total Assets
2022 2 764 $215M
2023 2 858 $255M
2024 2 873 $294M

Nearby 401(k) Plans in Missouri

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

Armstrong & Teasdale 401(k) Plan vs. nearby 401(k) plans in Missouri, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -5051015 Total assets ($B) Participants Armstrong & Teasdale 401(k) Plan, Total assets ($B): 0.157960445 · Participants: 602Armstrong & Teasdale 401(k) PlanEdward D. Jones & Co. Profit Sharing and 401(k) Plan, Total assets ($B): 10.594991308 · Participants: 49944Edward D. Jones & Co. Profit Sharing and 401(k) PlanBayer Corporation Savings and Retirement Plan, Total assets ($B): 10.333863661 · Participants: 19273Bayer Corporation Savings and Retirement PlanEnterprise Holdings Retirement Savings Plan, Total assets ($B): 5.607728879 · Participants: 66210Enterprise Holdings Retirement Savings PlanCentene Management Corporation Retirement Plan, Total assets ($B): 4.047068199 · Participants: 53822Centene Management Corporation Retirement PlanEmerson Electric Company Employee Savings Investment Plan, Total assets ($B): 3.563332746 · Participants: 10316Emerson Electric Company Employee Savings Investment Plan
Armstrong & Teasdale 401(k) Plan vs. nearby 401(k) plans in Missouri, assets vs. participants
Compare Armstrong & Teasdale 401(k) Plan side-by-side with 3 peers →

Armstrong & Teasdale 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Missouri, the nearest 401(k) by assets is Miller & Chevalier, Chartered Cash or Deferred Profit Sharing Plan in DC ($158M); by covered participants it is Auto Mall 46, Inc. 401(k) Plan in NJ (602 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (602 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 Armstrong & Teasdale 401(k) Plan assets move in 2023? ▼
Armstrong & Teasdale 401(k) Plan grew sharply - up 22.1% during 2023, from $129M to $158M. Reported net income was $29M.
How have Armstrong Teasdale LLP plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Armstrong Teasdale LLP's sponsor-wide assets grew 36.9%, from $215M to $294M.
Where does Armstrong & Teasdale 401(k) Plan rank by assets among Form 5500 filers? ▼
Armstrong & Teasdale 401(k) Plan ranks in the 94th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Armstrong & Teasdale 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Miller & Chevalier, Chartered Cash or Deferred Profit Sharing Plan in DC ($158M, 89 participants).
Which 401(k) plans cover a similar participant headcount to Armstrong & Teasdale 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Auto Mall 46, Inc. 401(k) Plan in NJ (602 participants, $3M 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 431274026.

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.