Follow-on Retail Offer to raise up to £300,000

Windar Photonics plc (AIM: WPHO), a wind energy technology company specialising in LiDAR‑based wind measurement and turbine performance optimisation, is pleased to announce a second retail offer via the BookBuild Platform (the "Retail Offer") of new ordinary shares of 1 penny each in the capital of the Company ("Ordinary Shares") to raise gross proceeds of up to £300,000. Pursuant to the Retail Offer, up to 6,000,000 new Ordinary Shares (the "Retail Offer Shares") will be made available at a price of 5 pence per Retail Offer Share (the "Issue Price").

Following significant demand for the Company's recent over-subscribed retail offer, the result of which was announced on 27 August 2026 (“First Retail Offer”), the Board is proposing this follow-on Retail Offer. The First Retail Offer demonstrated the strength of support for the business from existing retail shareholders of the Company as well as a desire to minimise dilution arising from the previous Fundraising. This follow on Retail Offer has therefore been launched to allow more of the Company’s retail shareholders to subscribe for Ordinary Shares on fundamentally the same basis as investors who participated in the recently completed fundraise.

The Issue Price is 5 pence per Retail Offer Share and each Retail Offer Share carries an entitlement to one warrant for every Retail Offer Share subscribed. Each warrant (the "Retail Offer Warrants") entitles the holder to subscribe for one Ordinary Share at an exercise price of 10 pence per Ordinary Share and is exercisable for a period of three years from admission of the First Retail Offer Shares to trading on AIM (28 August 2026). The Retail Offer Warrants will not be admitted to trading on AIM.

The issue of the Retail Offer Shares and the granting of the Retail Offer Warrants are conditional upon the passing of certain resolutions to be put to shareholders of the Company at its annual general meeting to be held on 30 September 2026 (the "AGM").

The Retail Offer is conditional on the Retail Offer Shares being admitted to trading on the AIM market operated by the London Stock Exchange. Admission of the Retail Offer Shares is expected to take place at 8.00 a.m. on or around 1 October 2026.

Expected Timetable in relation to the Retail Offer

2026

The Retail Offer Warrants will be issued as soon as practicable after Admission.

The dates and times set out in the above timetable are indicative only and may be subject to change. Any changes to the expected timetable set out above will be notified by the Company through a Regulatory Information Service (as defined in the AIM Rules for Companies published by the London Stock Exchange (as amended from time to time). References to times are to London times.

Dealing Codes

Retail Offer

The Company values its retail shareholder base, and given the support of retail shareholders in the recent First Retail Offer, the Company believes that it is appropriate to provide its retail shareholders in the United Kingdom with the opportunity to participate in this follow-on Retail Offer. The Company is therefore making the Retail Offer available in the United Kingdom through the financial intermediaries which will be listed, subject to certain access restrictions, on the following website: https://www.bookbuild.live/deals/L78JK7/authorised-intermediaries

The Retail Offer will be open to eligible investors in the United Kingdom at 4:30 p.m. on 9 September 2026. The Retail Offer is expected to close at 4:30 p.m. on 16 September 2026. Investors should note that financial intermediaries may have earlier closing times. The Retail Offer may close early if it is oversubscribed.

There is a minimum subscription of £100.00 per investor under the terms of the Retail Offer which is open to investors in the United Kingdom subscribing via the intermediaries which will be listed, subject to certain access restrictions, on the following website: https://www.bookbuild.live/deals/L78JK7/authorised-intermediaries

Notice for EIS investors

The Company has received a written opinion that, following the proposed changes to the EIS and VCT legislation announced in the Government’s Autumn Statement passing into law, the Retail Offer Shares will qualify for EIS investment. Notwithstanding the Company receiving this opinion, any investor seeking to register their holdings under either scheme is advised to seek their own advice before doing so. Tax reliefs depend on individual circumstances and the Company maintaining its opined qualifying status, tax relief may be withdrawn or need to be repaid. If investor wish to seek relief under EIS, they should indicate their interest through their chosen intermediary as part of their participation in the Retail Offer (where such facility is available) and by also emailing the Company at: investorrelations@windarphotonics.com.

The Company's LEI is 2138003JZZMKJGOOCR02 .

UK Product Governance Requirements

EU Product Governance Requirements