26 April 2023

CML Microsystems Plc

("CML", the "Company" or the "Group")

Transaction in Own Shares

and

Completion of Share Buyback Programme

CML announces that it has purchased ordinary shares of 5 pence each in its issued share capital as follows:

The transaction is in accordance with the Group's buyback programme (the "Programme") announced on 5 April 2023.

In accordance with Article 5(1)(b) of the Market Abuse Regulation 596/2014/EU incorporated into UK domestic law by the European Union (Withdrawal) Act 2018, the table below contains detailed information of the individual trades made by Shore Capital as part of the Programme.

Schedule of Purchases - Individual Transactions

Completion of Share Buyback Programme

CML has now completed the Programme, which between 5 April and 25 April 2023, repurchased 337,900 ordinary shares in the Company on the London Stock Exchange for cancellation at an average price of 529.1p per share. This represented 2.13% of the issued share capital of the Company (excluding any treasury shares, of which there were 72,634) when the Programme commenced.

Total Voting Rights

In conformity with the Financial Conduct Authority's Disclosure and Transparency rules, CML Microsystems Plc hereby notifies the market that the Company's issued share capital comprises 15,912,744 ordinary shares of 5p each. The total number of treasury shares held is 410,534 which do not carry voting rights.

The total number of voting rights in the Group is therefore 15,502,210 (which excludes ordinary shares held by the Group in treasury).

This figure may be used by shareholders as the denominator for the calculation by which they will determine if they are required to notify their interest in, or a change in their interest in, the Group under the FCA's Disclosure and Transparency Rules.

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About CML Microsystems PLC

CML develops mixed-signal, RF and microwave semiconductors for global communications markets. The Group utilises a combination of outsourced manufacturing and in-house testing with trading operations in the UK, Asia and USA. CML targets sub-segments within Communication markets with strong growth profiles and high barriers to entry. It has secured a diverse, blue chip customer base, including some of the world's leading commercial and industrial product manufacturers.

The spread of its customers and diversity of the product range largely protects the business from the cyclicality usually associated with the semiconductor industry. Growth in its end markets is being driven by factors such as the appetite for data to be transmitted faster and more securely, the upgrading of telecoms infrastructure around the world and the growing prevalence of private commercial wireless networks for voice and/or data communications linked to the industrial internet of things (IIoT).

The Group is cash-generative, has no debt and is dividend paying.