401(k) · DOL Form 5500 · 2023

Ardelyx, Inc. 401(k) Plan

Data updated 2026-08-25

$22M
Total assets Small plan by assets
134
Participants Small participant base
74th
Percentile by assets National rank
$161,799
Avg per participant Above avg balance/head
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Official DOL plan name: Ardelyx, Inc. 401(k) Plan · Sponsored by Ardelyx, Inc. · Massachusetts · Professional & Technical Services

$22M in assets, 134 participants

Ardelyx, Inc.'s Ardelyx, Inc. 401(k) Plan reported $22M in total assets and 134 participants in its 2023 DOL Form 5500 filing, ranking in the 74th 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.

  • #15,059 in Professional & Technical Services (20,321 peers)

Coverage in Massachusetts

Ardelyx, Inc. 401(k) Plan covers 134 participants in Massachusetts, about 20% of the average Massachusetts filer (state average ~659 per filing). Assets: $22M.

#15,059
in Professional & Technical Services (20,321 peers)
+52.9%
assets growth YoY

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 2023 · DOL Form 5500

$21,681,049 Top 26% higher than 74% 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

Ardelyx, Inc. 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. Ardelyx, Inc. 401(k) Plan sits mid-pack in the medium band (134 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Ardelyx, Inc. 401(k) Plan reported net income rose from -$3M in the plan year 2022 filing to $8M in the plan year 2023 filing.
  • Ardelyx, Inc. 401(k) Plan end-of-year assets rose from $14M in the plan year 2022 filing to $22M in the plan year 2023 filing.
  • Ardelyx, Inc. 401(k) Plan reported participants fell from 212 in the plan year 2022 filing to 134 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 261303944 · Ardelyx, Inc. PY 2023 · 401(k)

Ardelyx, Inc. 401(k) Plan · $22M · 134 · 74th

  • PHOTO $22M
  • PHOTO 134
  • PHOTO 74th
  • PHOTO 401(k)
  • PHOTO near Northway Bank 401(k) and Profit Sharing Plan
  • PHOTO ind #15059

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

Ardelyx, Inc. 401(k) Plan$22MNorthway Bank 401(k) and Profit Sharing PlanNorthway Bank 401(k) and Pro…$22MComplete Rx, Ltd. 401(k) Plan$22MKelly, Scott and Madison, Inc. Profit Sharing Plan and TrustKelly, Scott and Madison, In…$22MPineapple Energy, Inc. Employee Savings PlanPineapple Energy, Inc. Emplo…$22M
End-of-year total assets ($M) among Ardelyx, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$14M
Net Assets (End of Year)$22M
Net Income$8M
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): 0.021681049 · Participants: 134Ardelyx, Inc. 401(k) PlanFidelity Retirement Savings Plan, Total assets ($B): 28.649852331 · Participants: 62289Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 10.556596852 · Participants: 37052Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 6.829912863 · Participants: 14094Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 5.786107181 · Participants: 19881Boston Scientific Corporation 401(k) Retirement Savings PlanPhilips North America 401(k) Plan, Total assets ($B): 5.779286156 · Participants: 19120Philips North America 401(k) Plan
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 Northway Bank 401(k) and Profit Sharing Plan in NH ($22M); by covered participants it is Reed Oil Company 401(k) Profit Sharing Plan in PA (134 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (134 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 Ardelyx, Inc. 401(k) Plan assets move in 2023? ▼
Ardelyx, Inc. 401(k) Plan surged - up 52.9% during 2023, from $14M to $22M. Reported net income was $8M.
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.
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 Northway Bank 401(k) and Profit Sharing Plan in NH ($22M, 191 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 Reed Oil Company 401(k) Profit Sharing Plan in PA (134 participants, $15M 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 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.