Transaction in Own Shares

2 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)
25/09/2026	6,807	28.840000	29.700000	29.349449
28/09/2026	6,766	28.780000	29.200000	28.992935
29/09/2026	6,916	29.420000	30.080000	29.812817
30/09/2026	6,666	29.720000	30.300000	30.027138
01/10/2026	6,601	29.560000	30.340000	30.070074

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 54,782,944. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 54,782,944. 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 - 25.09.26-01.10.26.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 - 25 09 26-01 10 26

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