X0306 4 2021-05-05 1 0001351288 GW PHARMACEUTICALS PLC GWPH 0001754129 Gover Justin D. SOVEREIGN HOUSE, VISION PARK, HISTON CAMBRIDGE X0 CB24 9BZ UNITED KINGDOM 1 1 0 0 Chief Executive Officer Ordinary Shares 2021-05-05 4 D 0 222773 D 0 D Ordinary Shares 2021-05-05 4 D 0 456048 D 0 I By Justin D. Gover 2020 Irrevocable Trust dated December 14, 2020 Ordinary Shares 2021-05-05 4 D 0 1867308 D 0 I By the Gover Family Investment LLP Share Options 0.0017 2021-05-05 4 D 0 17508 D 2022-03-15 Ordinary Shares 17508 0 D Share Options 10.605 2021-05-05 4 D 0 75864 D 2025-06-24 Ordinary Shares 75864 0 D Share Options 3.72 2021-05-05 4 D 0 213240 D 2026-02-15 Ordinary Shares 213240 0 D Share Options 9.8117 2021-05-05 4 D 0 142344 D 2027-01-06 Ordinary Shares 142344 0 D Share Options 9.6092 2021-05-05 4 D 0 147624 D 2028-02-26 Ordinary Shares 147624 0 D Share Options 14.3342 2021-05-05 4 D 0 119472 D 2029-03-01 Ordinary Shares 119472 0 D Share Options 14.645 2021-05-05 4 D 0 30936 D 2029-06-14 Ordinary Shares 30936 0 D Share Options 0.0017 2021-05-05 4 D 0 22440 D Ordinary Shares 22440 0 D Share Options 0.0017 2021-05-05 4 D 0 34008 D Ordinary Shares 34008 0 D Share Options 0.0017 2021-05-05 4 D 0 226752 D Ordinary Shares 226752 0 D Share Options 0.0017 2021-05-05 4 D 0 12492 D Ordinary Shares 12492 0 D Share Options 0.0017 2021-05-05 4 D 0 55488 D Ordinary Shares 55488 0 D Share Options 0.0017 2021-05-05 4 D 0 287904 D Ordinary Shares 287904 0 D Share Options 0.0017 2021-05-05 4 D 0 479844 D Ordinary Shares 479844 0 D Share Options 0.0017 2021-05-05 4 D 0 164496 D Ordinary Shares 164496 0 D Share Options 0.0017 2021-05-05 4 D 0 263184 D Ordinary Shares 263184 0 D On May 5, 2021, Jazz Pharmaceuticals Public Limited Company, a public limited company incorporated in the Republic of Ireland ("Jazz"), Jazz Pharmaceuticals UK Holdings Limited, a private limited company incorporated in England and Wales and an indirect wholly owned subsidiary of Jazz ("Bidco") and the DR Nominee (as defined in the Transaction Agreement) acquired all outstanding ordinary shares, par value British Pound Sterling 0.001 per share, of GW Pharmaceuticals plc, a public limited company incorporated in England and Wales (the "Company"), by means of a scheme of arrangement under Part 26 of the UK Companies Act 2006 (the "Scheme of Arrangement") (continued in footnote 2). At the effective time of the Scheme of Arrangement, Scheme Shareholders (as defined in the Scheme of Arrangement) became entitled to receive for each Scheme Share (as defined in the Scheme of Arrangement) held by them an amount equal to $16.66 2/3 in cash plus 0.010030 ordinary shares, nominal value $0.0001 per share, of Jazz ("Jazz ordinary shares"). The transaction is more fully described in the Company's definitive proxy statement filed with the Securities and Exchange Commission on March 15, 2021. Pursuant to the Transaction Agreement, dated as of February 3, 2021 (the "Transaction Agreement"), by and among the Company, Jazz and Bidco, these share options vested (to the extent unvested) and were canceled in connection with the closing of the transactions contemplated by the Transaction Agreement in exchange for an all-cash payment equal to the value of the share options based on the value of the transaction consideration. Pursuant to the Transaction Agreement, one-third of these share options vested and were canceled in connection with the closing of the transactions contemplated by the Transaction Agreement in exchange for an all-cash payment equal to the value of the share options based on the value of the transaction consideration, and the remaining two-thirds were converted into an option to acquire Jazz ordinary shares (with any performance goals deemed fully satisfied), half of which will vest on March 2, 2022 and half of which will vest on March 2, 2023. These stock options were granted with automatic vesting on exercisable date. /s/ Justin D. Gover 2021-05-07