THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION FOR THE PURPOSES OF THE MARKET ABUSE REGULATION (EU) 596 / 2014 WHICH FORMS PART OF UNITED KINGDOM LAW BY VIRTUE OF THE EUROPEAN UNION (WITHDRAWAL) ACT 2018, AS AMENDED. UPON THE PUBLICATION OF THIS ANNOUNCEMENT, THIS INSIDE INFORMATION IS NOW CONSIDERED TO BE IN THE PUBLIC DOMAIN.

Light Science Technologies Holdings plc

("LSTH", "Light Science", the "Company" or the "Group")

Director Dealings

Light Science Technologies Holdings plc (AIM: LST), comprising three divisions: controlled environment agriculture ("CEA"); contract electronics manufacturing ("CEM") and passive fire protection ("PFP"), announces that on 06 December 2024 Simon Deacon, Chief Executive Officer, purchased 603,613 ordinary shares of 1 penny each in the Company ("Ordinary Shares") at an average price of 2.63p per share.

Accordingly, Simon Deacon's holding in the Company now totals 96,203,613 Ordinary Shares, representing approximately 28.89 per cent. of the Company's issued share capital.

Additionally, Graham Cooley, Non-Executive Chairman, purchased 1,500,000 ordinary shares of 1 penny each in the Company ("Ordinary Shares") at an average price of 2.73p per share on the same date.

Accordingly, Graham Cooley's holding in the Company now totals 29,000,000 Ordinary Shares, representing approximately 8.71 per cent. of the Company's issued share capital.

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Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them