LIGHT SCIENCE TECHNOLOGIES HOLDINGS PLC — Director's Dealing 2026

Jun 5, 2026

National Storage Mechanism | Additional information

RNS Number : 1062H

Light Science Tech. Holdings PLC

05 June 2026

Light Science Technologies Holdings plc

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

Grant of share Options and Surrender of Existing Options

Light Science Technologies Holdings plc (AIM: LST), the innovative technology and manufacturing business providing real-world solutions targeting issues including global food security and fire safety, announces that certain existing share options held by directors, senior management and employees have been surrendered and replaced with new share options under the Company's existing share option arrangements.

The Board has undertaken a review of the Group's incentive arrangements and concluded that following the recent fundraising, the replacement of certain existing options is appropriate to ensure that the Company's share-based incentive schemes continue to fulfil their intended purpose of retaining, motivating and rewarding key personnel whilst aligning their interests with those of shareholders.

Accordingly, options over a total of 22,750,275 ordinary shares ("Existing Options") have been surrendered and replaced with new options over 27,078,825 ordinary shares ("New Options"). The New Options have an exercise price of 2 pence per ordinary share, being the closing mid-market price per ordinary share on 3 June 2026, and retain substantially the same vesting schedules and expiry dates as the Existing Options.

The New Options comprise:

·     6,100,000 Existing Options granted on 15 October 2021 with a nil exercise price have been surrendered and replaced by 8,900,000 options with an exercise price of 2p.

·     16,650,275 options granted on 6 March 2024 with an exercise price of 5p have been surrendered and replaced by 18,178,825 options at an exercise price of 2p.

·     All New Options have therefore been harmonised to an exercise price of 2p

The Company confirms that, following the grant of the New Options, its share option arrangements remain within the limits approved by shareholders.

In addition, the Company intends to establish a new long-term incentive plan (LTIP), based around appropriate performance conditions, which is intended to incentivise long-term performance and sustainable growth.

Directors' and PDMR option holdings following grant:

Director	Existing Options surrendered	New Options granted and aggregate options held
Simon Deacon	3,330,055	4,858,605
Jim Snooks	4,830,055	5,518,580
Andrew Hempsall	4,830,055	5,518,580
Graham Cooley	6,660,110	6,660,110
Daryl Hollands	700,000	1,021,311
Total	20,350,275	23,577,186

For additional information please contact:

Light Science Technologies Holdings plc Simon Deacon, Chief Executive Officer Jim Snooks, Chief Financial Officer Andrew Hempsall, Chief Operating Officer	www.lightsciencetechnologiesholdings.com via Walbrook PR
Shore Capital (Nominated Adviser and Broker) Stephane Auton / George Payne	+44 (0)20 7408 4050
Walbrook PR Ltd (Media & Investor Relations) Nick Rome / Marcus Ulker	Tel: +44 (0)20 7933 8780 or [email protected]

PDMR Notification Forms:

The notification of dealing forms set out below are provided in accordance with the requirements of the UK Market Abuse Regulation.

1	Details of the person discharging managerial responsibilities / person closely associated
a)	Name	1.     Graham Cooley 2.     Simon Deacon 3.     Jim Snooks 4.     Andrew Hempsall 5.     Daryl Hollands
2	Reason for the notification
a)	Position/status	1.     Non-Executive Chair 2.     CEO 3.     CFO 4.     COO 5.     Group Financial Controller
b)	Initial notification /Amendment	Initial
3	Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)	Name	Light Science Technologies Holdings plc
b)	LEI	213800V9MWRRLVQ6EY56
4	Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)	Description of the financial instrument, type of instrument	Surrender and Grant of options under management share option plan Surrender and Grant of options under non-tax advantaged share option plan
Identification code	GB00BNDQJN14
b)	Nature of the transaction	Issue of options over Ordinary Shares
c)	Price(s) and volume(s)
		Price	Volume(s)
		1) 2p exercise price	1) 6,660,110
		2) 2p exercise price	2) 4,858,605
		3) 2p exercise price	3) 5,518,580
		4) 2p exercise price	4) 5,518,580
		5) 2p exercise price	5) 1,021,311
d)	Aggregated information
- Aggregated volume	N/A - Single transactions
- Price
e)	Date of the transaction	4 June 2026
f)	Place of the transaction	Outside a trading venue

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