---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-163153"
form_type: "8-K"
ticker: "ZLAB"
cik: "0001704292"
company_name: "Zai Lab Ltd"
filed_at: "2022-05-31T23:59:59+00:00"
generated_at: "2026-06-25T05:56:33.695535+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Zai Lab receives HKSE acknowledgement for dual-primary listing effective June 27, 2022

## Summary
- HKSE acknowledged Zai Lab's application for voluntary conversion from secondary to dual-primary listing.
- Dual-primary listing on HKSE and Nasdaq expected effective June 27, 2022; stock marker 'S' to be removed.
- Company to adopt new 2022 equity incentive plan compliant with HK Listing Rules, subject to June 22 AGM vote.
- Waivers sought from HKSE for U.S. GAAP financials and option exercise price based on ADS price.
- Primary conversion aims to broaden investor base in Greater China and increase liquidity of securities.

## SEC filing metadata
- accession: 0001193125-22-163153
- form_type: 8-K
- ticker: ZLAB
- cik: 0001704292
- company_name: Zai Lab Ltd
- filed_at: 2022-05-31T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1704292/000119312522163153/0001193125-22-163153-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1704292/000119312522163153/d360614d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-163153
- JSON: https://secwatch.observer/filing/0001193125-22-163153.json
- Plain text: https://secwatch.observer/filing/0001193125-22-163153.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.