Light Science Technologies Holdings plc

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

Notice of Results,

Online Analyst Briefing & Investor Presentation

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 it will release its audited results for the year ended 30 November 2025 on Friday 24 April 2026.

Online Analyst Briefing: 10.00am, Friday 24 April 2026

An online briefing for analysts will be held at 10.00am on Friday 24 April 2026. Analysts interested in attending should contact Walbrook PR on lst@walbrookpr.com or 020 7933 8780.

Investor Presentation: 11.00am, Monday 27 April 2026

Management will provide a live online presentation and host an investor Q&A session via the Investor Meet Company platform on the results and the Company's future prospects, at 11.00am on Monday 27 April 2026. Investors can sign up for free and register to meet Light Science via the following link: https://www.investormeetcompany.com/light-science-technologies-holdings-plc/register-investor

Investors who have already registered on the Investor Meet Company platform to follow the Company will automatically be invited to the presentation.

For additional information please contact:

Notes to Editors:

About Light Science Technologies Holdings plc (www.lightsciencetechnologiesholdings.com)

Light Science Technologies Holdings plc operates through three divisions: Passive fire protection ("PFP"); AgTech ("AGT") and contract electronics manufacturing ("CEM"). The company is involved in the design, manufacturing, and installation of products and customized solutions spanning various industry sectors, including commercial horticulture, pest control, lighting, audio, gas detection, and fire protection. With a focus on addressing global challenges related to food security, climate change, and fire protection, the Group is committed to developing robust solutions in these rapidly growing market sectors.

LSTH is the holding company for LSTH IFB Limited ("LSTH IFB") in the PFP division; Light Science Technologies Ltd ("Light Science Technologies") and Tomtech (UK) Limited ("Tomtech") in the AGT division and UK Circuits and Electronics Solutions Limited ("UK Circuits") in the CEM division.

Passive Fire Protection (https://injectafirebarrier.com/)

LSTH IFB offers a practical and cost-effective solution to rectify non-compliant public and private buildings, spanning residential, commercial, and industrial sectors, with regard to fire safety regulations - a challenge addressed by a £6.1 billion allocation from the UK government. Serving as the UK's premier independent approved installer, LSTH IFB utilises the ground-breaking Injectaclad fire-resistant graphite barrier system. This system is retroactively installed within building cavities, reinstating fire-resistant performance and containing the spread of fire and smoke compliant with regulatory requirements. This innovative solution stands out as an appealing alternative to the more costly and disruptive method of removing external facades and installing traditional fire barriers. With a proven track record in the passive fire protection market and a robust sales pipeline, LSTH IFB targets a UK market potentially valued at up to £50 billion*.

AgTech

The Group's tailored solutions encompass control systems, grow lights, sensor technology, venting, and irrigation systems, catering to both UK and global customers. Key markets include indoor, vertical, glasshouses, polytunnels, and more recently wider applications in broadacre farming. Driving factors comprise global food and water shortages, a growing population, government policies promoting sustainable growth methods, heightened scrutiny of food production's impact on climate change, and a shift away from processed foods. Key markets span the Americas, Australasia, and select locations in the Middle East.

The sensorGROW technology enables real-time monitoring of essential air zone growing factors such as carbon dioxide, air humidity, air pressure, air temperature and light, in addition to essential root zone cardinals such as soil temperature, soil moisture, and soil electroconductivity. Further developments to monitor greenhouse gases, initially Nitrous Oxide (N20) are in progress. This empowers farmers to enhance resource management, saving costs on water, nutrients, fertilizers, and energy, while simultaneously increasing yields and cultivating healthier crops. Learn more here: https://lightsciencetech.com/sensorgrow/ . The nurturGROW sustainable grow lighting product range, applicable to greenhouses, vertical farming, polytunnels, and licensed medicinal plants, addresses a robust market with an anticipated global worth of £9.1 billion** by 2030. Explore solutions here https://lightsciencetech.com/solutions/greenhouse/

Through Tomtech, the Group stands out as a UK leader in control systems for commercial greenhouses and polytunnels. Tomtech enables growers to optimise and automate cultivation environments, leading to superior crop growth. The product range includes control systems, software, irrigation, lighting, sensors, and venting, applicable across various crops, ultimately improving yields and profitability. Discover more here https://www.tomtech.co.uk/

Contract Electronics Manufacturing (https://www.ukcircuits.co.uk/)

UK Circuits serves as the Group's profitable and revenue-strong CEM-focused division. It excels in designing, procuring, and manufacturing high-quality electronic products, with a specialisation in Printed Circuit Boards. These products find application across diverse sectors such as audio, automotive, electronics, gas detection, lighting, pest control, telecommunications and AgTech.

* Estimators price cladding replacement at 10 times government budget (theconstructionindex.co.uk) 2021

**Report: Allied Market Research LED Grow Lights Market Analysis 2030; (https://www.alliedmarketresearch.com/led-grow-lights-market-A12416): USD $12.3 billion by 2030 converted at GBP £1 = USD $1.35.