Zai Lab President and COO Josh Smiley departs immediately, CEO assumes responsibilities

Filed May 21, 2026 · Period ending May 18, 2026 · ~1 min read

Key Changes

• high

  President and Chief Operating Officer Josh Smiley ceased serving effective May 18, 2026, with final employment day May 22. The departure was immediate and the position is not being refilled.

  Item 5.02 verify on EDGAR →
• medium

  CEO Samantha Du and existing management team absorbed all President and COO responsibilities rather than hiring a replacement, concentrating operational control at the CEO level.

  Item 5.02 verify on EDGAR →
• low

  Smiley will receive severance per his employment agreement subject to signing a standard release, suggesting a negotiated rather than for-cause departure.

  Item 5.02 verify on EDGAR →