Du Ying 4

What Happened
Du Ying, Chairperson and CEO of Zai Lab Ltd (ZLAB), had 58,800 ADS vest from restricted share units (RSUs) on 2026-06-25 and subsequently sold 24,543 ADS in an open-market transaction on 2026-06-26 for $17.46 each, totaling $428,545. The vesting delivered 58,800 ADS (reported as an exercise/conversion of a derivative), and a like number of ADS were disposed to cover taxes upon vesting.

Key Details

• Transaction dates: RSU vesting/exercise reported 2026-06-25; open-market sale 2026-06-26. Filing date: 2026-06-29.
• Open-market sale: 24,543 ADS at $17.46 per ADS = $428,545.
• Vesting: 58,800 ADS acquired via RSU vesting (reported as derivative exercise); those ADS were subject to automatic sale/withholding to cover taxes.
• ADS note: Each ADS represents 10 ordinary shares (filing reports in ADS terms).
• RSU terms: RSUs vest in equal annual installments over four years beginning 06/25/2023 (so this is a scheduled vesting).
• Shares owned after transaction: not specified in the provided filing.
• Filing timeliness: the Form 4 was filed 2026-06-29 for transactions on 6/25–6/26; the filing does not indicate a late-filed flag.

Context

• The 58,800 ADS result from RSU vesting (an award), and the matching disposal reflects automatic withholding or sale to cover taxes—this is routine and not the same as a voluntary market sell for diversification.
• The separate open-market sale of 24,543 ADS is an actual disposition that generated cash proceeds of ~$428.5K. Sales by insiders can be routine (taxes, diversification, liquidity) and do not by themselves indicate company outlook.