401(k) · DOL Form 5500 · 2024

Arrowhead Pharmaceuticals, Inc. 401(k) Plan

Data updated 2026-08-25

$60M
Total assets Below avg plan size
546
Participants Below avg headcount
86th
Percentile by assets National rank
$110,447
Avg per participant Below avg balance/head
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Official DOL plan name: Arrowhead 401(k) Plan and Trust · Sponsored by Arrowhead Pharmaceuticals, Inc. · California · Administrative & Support Services

$60M in assets, 546 participants

Arrowhead Pharmaceuticals, Inc.'s Arrowhead 401(k) Plan and Trust reported $60M in total assets and 546 participants in its 2024 DOL Form 5500 filing, ranking in the 86th 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.

  • #4,061 in Administrative & Support Services (4,368 peers)

Where Arrowhead 401(k) Plan and Trust sits by assets

Arrowhead 401(k) Plan and Trust sits in the top quartile of all filed plans by assets, $60M for 546 participants (~$110,447/participant), up 37.1% in 2024.

#4,061
in Administrative & Support Services (4,368 peers)
+37.1%
assets growth YoY
0.6×
vs typical plan assets (national mean)

Arrowhead 401(k) Plan and Trust's outsized position by total assets

Arrowhead 401(k) Plan and Trust vs every filed plan by assets

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

$60,304,173 Top 14% higher than 86% 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

Arrowhead 401(k) Plan and Trust 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. Arrowhead 401(k) Plan and Trust sits mid-pack in the medium band (546 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Arrowhead 401(k) Plan and Trust end-of-year assets rose from $44M in the plan year 2023 filing to $60M in the plan year 2024 filing.
  • Arrowhead 401(k) Plan and Trust reported participants rose from 428 in the plan year 2023 filing to 546 in the plan year 2024 filing.
  • Arrowhead 401(k) Plan and Trust reported net income rose from $15M in the plan year 2023 filing to $16M in the plan year 2024 filing.

See the national 2023→2024 release diff →

Plan-year Form 5500 strip

Filing strip 460408024 · Arrowhead Pharmaceuticals, Inc. PY 2024 · 401(k)

Arrowhead 401(k) Plan and Trust · $60M · 546 · 86th

  • TYPE $60M
  • TYPE 546
  • TYPE 86th
  • TYPE 401(k)
  • TYPE near Arizona Diamondbacks Retirement Savings Plan
  • TYPE ind #4061

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 Administrative & Support Services retirement plans → · Plans in California →

Arrowhead 401(k) Plan and Trust in the asset neighbourhood

Arizona Diamondbacks Retirement Savings PlanArizona Diamondbacks Retirem…$60MLsb Industries, Inc. 401(k) PlanLsb Industries, Inc. 401(k) …$60MUrology America Mso 401(k) PlanUrology America Mso 401(k) P…$60MArrowhead 401(k) Plan and TrustArrowhead 401(k) Plan and Tr…$60MAgilix Solutions, LLC Profit Sharing PlanAgilix Solutions, LLC Profit…$60M
End-of-year total assets ($M) among Arrowhead 401(k) Plan and Trust and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$44M
Net Assets (End of Year)$60M
Net Income$16M
Employer EIN460408024
Plan Effective Date2005-01-15
Filing StatusFILING RECEIVED

Sponsor Plan History (Arrowhead Pharmaceuticals, Inc.)

Sponsor-wide plan assets over time

All Arrowhead Pharmaceuticals, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$60M 105.31429315197562% vs 2022
2024 filing year
$20M$30M$40M$50M$60M$70M 202220232024 $29.4M $60.3M ▲ +105.3%
Year Plans Participants Total Assets
2022 1 346 $29M
2023 1 428 $44M
2024 1 546 $60M

Nearby 401(k) Plans in California

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

Arrowhead 401(k) Plan and Trust vs. nearby 401(k) plans in California, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000 -200204060 Total assets ($B) Participants Arrowhead 401(k) Plan and Trust, Total assets ($B): 0.060304173 · Participants: 546Arrowhead 401(k) Plan and TrustGoogle LLC 401(k) Savings Plan, Total assets ($B): 48.738057415 · Participants: 116712Google LLC 401(k) Savings PlanOracle Corporation 401(k) Savings and Investment Plan, Total assets ($B): 31.02646504 · Participants: 58962Oracle Corporation 401(k) Savings and Investment PlanIntel 401(k) Savings Plan, Total assets ($B): 24.850880304 · Participants: 55298Intel 401(k) Savings PlanApple 401(k) Plan, Total assets ($B): 24.714519387 · Participants: 101450Apple 401(k) PlanCisco Systems,Inc. 401(k) Plan, Total assets ($B): 22.728425546 · Participants: 40452Cisco Systems,Inc. 401(k) Plan
Arrowhead 401(k) Plan and Trust vs. nearby 401(k) plans in California, assets vs. participants
Compare Arrowhead 401(k) Plan and Trust side-by-side with 3 peers →

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

Outside California, the nearest 401(k) by assets is Arizona Diamondbacks Retirement Savings Plan in AZ ($60M); by covered participants it is The Robins Financial Credit Union 401(k) Savings and Investment Plan and in GA (546 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($60M here).

Similar participant headcount

Nearest other-state filings by covered participants (546 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 Arrowhead 401(k) Plan and Trust assets move in 2024? ▼
Arrowhead 401(k) Plan and Trust surged - up 37.1% during 2024, from $44M to $60M. Reported net income was $16M.
How have Arrowhead Pharmaceuticals, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Arrowhead Pharmaceuticals, Inc.'s sponsor-wide assets grew 105.3%, from $29M to $60M.
Where does Arrowhead 401(k) Plan and Trust rank by assets among Form 5500 filers? ▼
Arrowhead 401(k) Plan and Trust ranks in the 86th 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 Arrowhead 401(k) Plan and Trust? ▼
Among 401(k) plans in other states, the closest by assets is Arizona Diamondbacks Retirement Savings Plan in AZ ($60M, 393 participants).
Which 401(k) plans cover a similar participant headcount to Arrowhead 401(k) Plan and Trust? ▼
Among 401(k) plans in other states, the closest by covered participants is The Robins Financial Credit Union 401(k) Savings and Investment Plan and in GA (546 participants, $61M 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 460408024.

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.