401(k) · DOL Form 5500 · 2024

Ardelyx, Inc. 401(k) Plan

Data updated 2026-08-25

$38M
Total assets Below avg plan size
270
Participants Below avg headcount
81st
Percentile by assets National rank
$139,160
Avg per participant Near avg balance/head
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Official DOL plan name: Ardelyx, Inc. 401(k) Plan · Sponsored by Ardelyx, Inc. · Massachusetts · Professional & Technical Services

$38M in assets, 270 participants

Ardelyx, Inc.'s Ardelyx, Inc. 401(k) Plan reported $38M in total assets and 270 participants in its 2024 DOL Form 5500 filing, ranking in the 81st 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.

  • #16,342 in Professional & Technical Services (20,173 peers)

Coverage in Massachusetts

Ardelyx, Inc. 401(k) Plan covers 270 participants in Massachusetts, about 41% of the average Massachusetts filer (state average ~659 per filing). Assets: $38M.

#16,342
in Professional & Technical Services (20,173 peers)
+73.3%
assets growth YoY
0.4×
vs typical plan assets (national mean)

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

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

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

$37,573,102 Top 19% higher than 81% 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

Ardelyx, 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. Ardelyx, Inc. 401(k) Plan sits mid-pack in the medium band (270 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Ardelyx, Inc. 401(k) Plan reported net income rose from $8M in the plan year 2023 filing to $16M in the plan year 2024 filing.
  • Ardelyx, Inc. 401(k) Plan reported participants rose from 134 in the plan year 2023 filing to 270 in the plan year 2024 filing.
  • Ardelyx, Inc. 401(k) Plan end-of-year assets rose from $22M in the plan year 2023 filing to $38M in the plan year 2024 filing.

See the national 2023→2024 release diff →

Published 5500 schedule card

Filing strip 261303944 · Ardelyx, Inc. PY 2024 · 401(k)

Ardelyx, Inc. 401(k) Plan · $38M · 270 · 81st

  • ASSETS $38M
  • PCT 270
  • EIN 81st
  • RANK 401(k)
  • PHOTO near Pasco Scientific Employee 401(k) Savings Plan
  • IND ind #16342

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 →

Ardelyx, Inc. 401(k) Plan in the asset neighbourhood

Ur Medicine Home Care Inc. 401(k) Retirement Savings PlanUr Medicine Home Care Inc. 4…$38MArdelyx, Inc. 401(k) Plan$38MPasco Scientific Employee 401(k) Savings PlanPasco Scientific Employee 40…$38MKnown Global LLC 401(k) Plan$38MAcuative Corporation 401(k) PlanAcuative Corporation 401(k) …$38M
End-of-year total assets ($M) among Ardelyx, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Massachusetts filing particulars

Total Assets (Beginning of Year)$22M
Net Assets (End of Year)$38M
Net Income$16M
Employer EIN261303944
Plan Effective Date2008-09-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Ardelyx, Inc.)

Sponsor-wide plan assets over time

All Ardelyx, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$38M 164.98077020454375% vs 2022
2024 filing year
$10M$20M$30M$40M 202220232024 $14.2M $37.6M ▲ +165.0%
Year Plans Participants Total Assets
2022 1 212 $14M
2023 1 134 $22M
2024 1 270 $38M

Nearby 401(k) Plans in Massachusetts

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

Ardelyx, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Ardelyx, Inc. 401(k) Plan, Total assets ($B): 0.037573102 · Participants: 270Ardelyx, 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
Ardelyx, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Ardelyx, Inc. 401(k) Plan side-by-side with 3 peers →

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

Outside Massachusetts, the nearest 401(k) by assets is Pasco Scientific Employee 401(k) Savings Plan in CA ($38M); by covered participants it is Frac Shack America 401(k) Retirement Plan in CO (270 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($38M here).

Similar participant headcount

Nearest other-state filings by covered participants (270 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 Ardelyx, Inc. 401(k) Plan assets move in 2024? ▼
Ardelyx, Inc. 401(k) Plan surged - up 73.3% during 2024, from $22M to $38M. Reported net income was $16M.
How have Ardelyx, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Ardelyx, Inc.'s sponsor-wide assets grew 165.0%, from $14M to $38M.
Where does Ardelyx, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
Ardelyx, Inc. 401(k) Plan ranks in the 81st percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Ardelyx, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Pasco Scientific Employee 401(k) Savings Plan in CA ($38M, 108 participants).
Which 401(k) plans cover a similar participant headcount to Ardelyx, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Frac Shack America 401(k) Retirement Plan in CO (270 participants, $648K 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 261303944.

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.