401(k) · DOL Form 5500 · 2024

Zai Lab US, LLC 401(k) Plan

Data updated 2026-08-25

$13M
Total assets Small plan by assets: 80
Participants Small participant base: 61st
Percentile by assets National rank: $162,086
Avg per participant Above avg balance/head

PlainRetire home → About this data RSS: change history

Official DOL plan name: Zai Lab US 401(k) Plan · Sponsored by Zai Lab US, LLC · Massachusetts · Professional & Technical Services

$13M in assets, 80 participants

Zai Lab US, LLC's Zai Lab US 401(k) Plan reported $13M in total assets and 80 participants in its 2024 DOL Form 5500 filing, ranking in the 61st 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.

#12,140 in Professional & Technical Services (20,173 peers)

Zai Lab US, LLC multi-year trail

Zai Lab US, LLC's plans moved +245.6% in assets from 2022 to 2024; this filing shows Zai Lab US 401(k) Plan at $13M / 80 participants.

#12,140
in Professional & Technical Services (20,173 peers): +30.4%
assets growth YoY

Zai Lab US 401(k) Plan's mid-pack asset rank among Professional & Technical Services and all filers

Zai Lab US 401(k) Plan vs every filed plan by assets

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

$12,966,897 Top 39% higher than 61% of 123,620 filed plans

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

Zai Lab US 401(k) Plan among smaller filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Zai Lab US 401(k) Plan is a small filing (80 participants) on this national headcount ladder.

Micro (1-10) 33,766 filings (27%) Small (11-100) 26,107 filings (21%) Medium (101-1,000) 54,251 filings (43%) Large (1,001-10,000) 10,349 filings (8%) Mega (10,000+) 1,399 filings (1%)

Zai Lab US 401(k) Plan reported net income fell from $6M in the plan year 2023 filing to $3M in the plan year 2024 filing.
Zai Lab US 401(k) Plan end-of-year assets rose from $10M in the plan year 2023 filing to $13M in the plan year 2024 filing.
Zai Lab US 401(k) Plan reported participants fell from 83 in the plan year 2023 filing to 80 in the plan year 2024 filing.

See the national 2023→2024 release diff →

EBSA filing schedule strip

Filing strip 384037924 · Zai Lab US, LLC PY 2024 · 401(k)

Zai Lab US 401(k) Plan · $13M · 80 · 61st

EBSA $13M
PART 80
TYPE 61st
NET 401(k)
BOOK near Advanced Industrial Services, Inc. 401(k) Plan
VS-ST ind #12140

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 →

End-of-year total assets ($M) among Zai Lab US 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Zai Lab US, LLC multi-year asset trail

Latest sponsor-wide plan assets: $13M 245.5762056619834% vs 2022; 2024 filing year

Year	Plans	Participants	Total Assets
2022	1	71	$4M
2023	1	83	$10M
2024	1	80	$13M

Zai Lab US, LLC filing trail (2024)

Total Assets (Beginning of Year)	$10M
Net Assets (End of Year)	$13M
Net Income	$3M
Employer EIN	384037924
Plan Effective Date	2022-11-01
Filing Status	FILING RECEIVED

Nearby 401(k) Plans in Massachusetts

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

Zai Lab US 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Fidelity Retirement Savings Plan $34.2B · 66,907
Liberty Mutual 401(k) Plan $11.4B · 34,618
Massachusetts Institute of Technology Supplemental 401(k) Plan $7.7B · 14,762
Boston Scientific Corporation 401(k) Retirement Savings Plan $6.8B · 20,639
State Street Salary Savings Program $6.5B · 12,777

Compare Zai Lab US 401(k) Plan side-by-side with 3 peers →

Zai Lab US 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Advanced Industrial Services, Inc. 401(k) Plan in PA ($13M); by covered participants it is Rmcp 401(k) in CO (80 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($13M here).

Advanced Industrial Services, Inc. 401(k) Plan (PA) $13M · 131
Spectrum Associates 401(k) Plan (CT) $13M · 62
Widget Federal Credit Union D/B/a Widget Financial 401(k) Plan and Trust (PA) $13M · 115
Depository Trust Company of Delaware, LLC 401(k) Profit Sharing Plan (DE) $13M · 88

Similar participant headcount

Nearest other-state filings by covered participants (80 participants); asset peers above are excluded.

Rmcp 401(k) (CO) 80 · 0 off
Gana-A'yoo, Limited 401(k) Retirement Plan (AK) 80 · 0 off
Sojitz De Puerto Rico Corporation 1165(e) Plan (PR) 80 · 0 off
Kros-Wise 401(k) Profit Sharing Plan & Trust (CA) 80 · 0 off

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 Zai Lab US 401(k) Plan assets move in 2024? ▼

Zai Lab US 401(k) Plan surged - up 30.4% during 2024, from $10M to $13M. Reported net income was $3M.

How have Zai Lab US, LLC plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Zai Lab US, LLC's sponsor-wide assets grew 245.6%, from $4M to $13M.

Which 401(k) plans are similar in size to Zai Lab US 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by assets is Advanced Industrial Services, Inc. 401(k) Plan in PA ($13M, 131 participants).

Which 401(k) plans cover a similar participant headcount to Zai Lab US 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by covered participants is Rmcp 401(k) in CO (80 participants, $391K 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 384037924.