Jazz Pharmaceuticals SVP Mary Elizabeth Henderson Disposes of 1,427 Shares for Tax Withholding

Executive Summary

On September 10, 2026, Jazz Pharmaceuticals plc ($JAZZ) filed a Form 4 reporting that Mary Elizabeth Henderson, Senior Vice President of Technical Operations, disposed of a total of 1,427 Ordinary Shares on September 8, 2026, for an aggregate value of approximately $346,776.22.

Transaction Breakdown

• Transaction Code F (Tax Withholding):
  • Tranche 1: 1,412 shares disposed at $243.0299 per share ($343,158.22 total).
  • Tranche 2: 15 shares disposed at $241.2000 per share ($3,618.00 total).
• Purpose: As noted in the filing footnotes, the disposition was executed solely to cover statutory tax withholding obligations resulting from the vesting of previously granted Restricted Stock Units (RSUs).

Post-Transaction Holdings

• Following these transactions, Henderson retains direct beneficial ownership of 23,815 Ordinary Shares of Jazz Pharmaceuticals plc.

Market & Governance Context

• Trading Significance: Low. The transaction does not represent discretionary open-market selling or a change in insider sentiment; rather, it is a routine, automated disposition for tax compliance associated with equity compensation vesting.