Name Change, Board Change and Company Update

SHORTWAVE LIFE SCIENCES PLC

(RENAMED:  TOMAHAWK METALS PLC)

("Tomahawk" or "the Company")

18 May 2026

NAME CHANGE

FUNDING UPDATE

 BOARD RESIGNATION

ADVISORS APPOINTED

The Company (AQSE: TMHK), quoted on the Aquis Stock Exchange Growth Market, is pleased to announce its name change to "Tomahawk Metals Plc", the new ticker for the Company is "TMHK" and the new website is https://tomahawkmetals.com and is now live. In line with the Company's articles, the Company held a board meeting and the name of the Company was changed by a Board resolution.

Fund Raising Update from April

Additionally, the Company is pleased to report, further to the announcements of 20 and 30 April 2026, that £80,000 in cash has now been received from the £100,000 subscription that was announced on 20 April 2026. The Company expects a final amount of £20,000 to be received shortly, and a further announcement will be made in due course. Accordingly, the Company will now seek to issue 5,333,333 ordinary shares for the £80,000 received and it is expected that admission will become effective and dealings in the ordinary shares will commence on Aquis at 8.00 a.m. on or around 22 May 2026.

Board Resignation

The Company announces that Stephen Molly has stepped down as Executive Director and main board director of the Company. The Board would like to thank Stephen for his valuable contribution to the Company, particularly in advancing its digital asset management programme.

The Company will no longer pursue the Digital Asset Strategy and will instead focus exclusively on its gold and antimony options and securing an exist from its clinical assets business as announced on the 20^th of April 2026 and wishes Stephen every success in his future endeavours.

New Advisor Appointments

Tomahawk is pleased to announce the immediate appointment of a nominated and financial adviser in connection with its proposed move to the AIM market of the London Stock Exchange. However, there can be no guarantee that any admission to AIM or related transaction will ultimately take place.

The Company has also entered into an agreement with SRK Consulting, who will assist with the due diligence on the antimony and gold options entered as a first phase of work. Additionally, their initial scope of work will include developing recommendations for the first year of operational plans and budgets for the work to be carried out on the asset if the transaction is completed. If the board decides to proceed with the transactions, SRK will build on the due diligence work and proceed to its second phase, which will lead to a detailed Competent Persons Report on the assets in Slovakia

The Company will announce additional advisers supporting the process in due course.

Director Options Granted:

Tomahawk announces that the following options will be granted to the Board of Directors when the Company has set up its Employee Benefits Trust which will require a shareholder resolution at the next shareholder meeting to be held.

Rolf Gerritsen: 1,000,000 with exercise price of 1.8p with a maturity date of 3 years from issue date

Stephen Murphy: 1,000,000 with exercise price of 1.8p with a maturity date of 3 years from issue date

Keith Coughlan: 1,000,000 with exercise price of 1.8p with maturity date of 3 years from issue date

Stephen Molly, as good leaver, 200,000 with exercise price of 1.8p with maturity date of 3 years from issue date

Total voting rights

Following admission of the 5,333,333 Subscription Shares from the 20 April fundraising, the total number of ordinary shares of £0.0001 in issue with full voting rights will be 71,846,009. This figure may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the FCA's Disclosure Guidance and Transparency Rules.

 In accordance with the Financial Conduct Authority's Disclosure and Transparency Rules, Tomahawk will therefore have 71,846,009 ordinary shares of £0.0001 each in issue, each share carrying the right to one vote.

The above figure of 71,846,009 ordinary shares may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the share capital of the Company under the Financial Conduct Authority's Disclosure and Transparency Rules.

The Directors of the Company accept responsibility for the contents of this announcement.

Enquiries:

Company:

Rolf Gerritsen

+44 20383 87621

Clear Capital Markets Limited:

Broker

Bob Roberts

+44 (0) 20 3869 6080

AlbR Capital Limited:

Corporate Adviser:

+ 44 (0) 20 7469 0930