401(k) · DOL Form 5500 · 2023

Kiniksa Pharmaceuticals Corp. 401(k) Plan

Data updated 2026-08-25

$28M
Total assets Below avg plan size
220
Participants Below avg headcount
78th
Percentile by assets National rank
$126,909
Avg per participant Near avg balance/head
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Official DOL plan name: Kiniksa Pharmaceuticals 401(k) Plan · Sponsored by Kiniksa Pharmaceuticals Corp. · Massachusetts · Professional & Technical Services

$28M in assets, 220 participants

Kiniksa Pharmaceuticals Corp.'s Kiniksa Pharmaceuticals 401(k) Plan reported $28M in total assets and 220 participants in its 2023 DOL Form 5500 filing, ranking in the 78th 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.

  • #15,961 in Professional & Technical Services (20,321 peers)

Coverage in Massachusetts

Kiniksa Pharmaceuticals 401(k) Plan covers 220 participants in Massachusetts, about 33% of the average Massachusetts filer (state average ~659 per filing). Assets: $28M.

#15,961
in Professional & Technical Services (20,321 peers)
+49.5%
assets growth YoY
0.3×
vs typical plan assets (national mean)

Kiniksa Pharmaceuticals 401(k) Plan's outsized position by total assets

Kiniksa Pharmaceuticals 401(k) Plan vs every filed plan by assets

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

$27,920,065 Top 22% higher than 78% 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

Kiniksa Pharmaceuticals 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. Kiniksa Pharmaceuticals 401(k) Plan sits mid-pack in the medium band (220 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Kiniksa Pharmaceuticals 401(k) Plan reported net income rose from $1M in the plan year 2022 filing to $9M in the plan year 2023 filing.
  • Kiniksa Pharmaceuticals 401(k) Plan end-of-year assets rose from $19M in the plan year 2022 filing to $28M in the plan year 2023 filing.
  • Kiniksa Pharmaceuticals 401(k) Plan reported participants rose from 209 in the plan year 2022 filing to 220 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 474596717 · Kiniksa Pharmaceuticals Corp. PY 2023 · 401(k)

Kiniksa Pharmaceuticals 401(k) Plan · $28M · 220 · 78th

  • NET $28M
  • BOOK 220
  • VS-ST 78th
  • BOY 401(k)
  • SCH near Kanequip, Inc. Profit Sharing Plan and Trust
  • EBSA ind #15961

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 →

Kiniksa Pharmaceuticals 401(k) Plan in the asset neighbourhood

Kiniksa Pharmaceuticals 401(k) PlanKiniksa Pharmaceuticals 401(…$28MKanequip, Inc. Profit Sharing Plan and TrustKanequip, Inc. Profit Sharin…$28MKaiser Aluminum Warrick, LLC Savings and Investment PlanKaiser Aluminum Warrick, LLC…$28MRennes Group, Inc. 401(k) Plan and TrustRennes Group, Inc. 401(k) Pl…$28MVinik Sports Group 401(k) PlanVinik Sports Group 401(k) Pl…$28M
End-of-year total assets ($M) among Kiniksa Pharmaceuticals 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$19M
Net Assets (End of Year)$28M
Net Income$9M
Employer EIN474596717
Plan Effective Date2016-02-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Kiniksa Pharmaceuticals Corp.)

Sponsor-wide plan assets over time

All Kiniksa Pharmaceuticals Corp. plans reported in each filing year

Latest sponsor-wide plan assets
$37M 98.96231273637544% vs 2022
2024 filing year
$10M$20M$30M$40M 202220232024 $18.7M $37.2M ▲ +99.0%
Year Plans Participants Total Assets
2022 1 209 $19M
2023 1 220 $28M
2024 1 286 $37M

Nearby 401(k) Plans in Massachusetts

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

Kiniksa Pharmaceuticals 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Kiniksa Pharmaceuticals 401(k) Plan, Total assets ($B): 0.027920065 · Participants: 220Kiniksa Pharmaceuticals 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
Kiniksa Pharmaceuticals 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Kiniksa Pharmaceuticals 401(k) Plan side-by-side with 3 peers →

Kiniksa Pharmaceuticals 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Kanequip, Inc. Profit Sharing Plan and Trust in KS ($28M); by covered participants it is Dennelisse Corporation 401(k) Plan in NY (220 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (220 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 Kiniksa Pharmaceuticals 401(k) Plan assets move in 2023? ▼
Kiniksa Pharmaceuticals 401(k) Plan surged - up 49.5% during 2023, from $19M to $28M. Reported net income was $9M.
How have Kiniksa Pharmaceuticals Corp. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Kiniksa Pharmaceuticals Corp.'s sponsor-wide assets grew 99.0%, from $19M to $37M.
Where does Kiniksa Pharmaceuticals 401(k) Plan rank by assets among Form 5500 filers? ▼
Kiniksa Pharmaceuticals 401(k) Plan ranks in the 78th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Kiniksa Pharmaceuticals 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Kanequip, Inc. Profit Sharing Plan and Trust in KS ($28M, 289 participants).
Which 401(k) plans cover a similar participant headcount to Kiniksa Pharmaceuticals 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Dennelisse Corporation 401(k) Plan in NY (220 participants, $1M 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 474596717.

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.