Transaction in Own Shares

30 October 2026

Oxford Instruments plc

(“Oxford Instruments” or the “Company”)

Transaction in Own Shares

Oxford Instruments announces that, in accordance with the terms of its share buyback programme announced on 2 March 2026 (the “Share Buyback Programme”), the Company purchased the following number of its own ordinary shares of 5p each through J.P Morgan Securities plc (JPMS plc) for cancellation:

Date	Aggregate number of ordinary shares purchased	Lowest price paid per share (GBp)	Highest price paid per share (GBp)	Volume weighted average price paid per share (GBp)
23/10/2026	7,722	24.840000	25.860000	25.315714
26/10/2026	7,867	25.020000	25.620000	25.431013
27/10/2026	7,568	25.600000	26.400000	26.056911
28/10/2026	7,404	26.400000	26.880000	26.741618
29/10/2026	7,500	26.580000	26.900000	26.770429

Following settlement of the above purchases and cancellation of the purchased ordinary shares, the Company’s total number of ordinary shares in issue shall be 54,644,677. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 54,644,677. This figure for the total number of voting rights 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.

Transaction Details:

In accordance with Article 5(1)(b) of the Market Abuse Regulation (EU) No. 596/2014 as it forms part of UK law, detailed information of the individual trades made by JPMS plc on behalf of the Company as part of the Share Buyback Programme can be found at the following link:

 Oxford Instruments plc - Weekly Trade Fills - 23.10.26-29.10.26.pdf

For further details:

Oxford Instruments plc

Stephen Lamacraft, Head of Investor Relations    Tel: [phone]

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Oxford Instruments plc - Weekly Trade Fills - 23 10 26-29 10 26

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