Transaction in Own Shares

16 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)
09/10/2026	6,800	29.300000	29.940000	29.606800
12/10/2026	6,750	29.580000	29.980000	29.770000
13/102026	6,700	30.040000	31.000000	30.440212
14/10/2026	6,700	29.120000	30.320000	29.487140
15/10/2026	6,500	26.940000	28.360000	27.285883

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 54,719,840. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 54,719,840. 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 - 09.10.26-15.10.26.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 - 09 10 26-15 10 26

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