Transaction in Own Shares

13 January 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 25 June 2025 (the “Share Buyback Programme”), the Company purchased the following number of its own ordinary shares of 5p each through Deutsche Bank AG, London Branch (trading for these purposes as Deutsche Numis) (“Deutsche Numis”) for cancellation at an average price of 2139.4752 pence per share:

Date of purchase:	12 January 2026
Aggregate number of ordinary shares purchased:	7,488
Lowest price paid per share (GBp):	2135.0000
Highest price paid per share (GBp):	2140.0000
Volume weighted average price paid per share (GBp):	2139.4752

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 56,097,907. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,097,907. 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.

Aggregate information:

Venue	Weighted average price paid per share (GBp)	Aggregate number of shares purchased
London Stock Exchange	2139.4752	7,488

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, the table below contains detailed information of the individual trades made by Deutsche Numis on behalf of the Company as part of the Share Buyback Programme:

Number of ordinary shares purchased	Transaction price (GBp share)	Time of transaction (UK Time)	Transaction reference number	Trading venue
457	2140.00	14:29:02	00078621924TRLO0	XLON
387	2140.00	14:29:02	00078621925TRLO0	XLON
405	2140.00	14:29:02	00078621926TRLO0	XLON
392	2140.00	14:29:02	00078621927TRLO0	XLON
251	2140.00	14:29:02	00078621928TRLO0	XLON
423	2140.00	14:29:02	00078621929TRLO0	XLON
399	2140.00	14:29:02	00078621930TRLO0	XLON
154	2140.00	14:29:02	00078621931TRLO0	XLON
421	2140.00	14:29:02	00078621932TRLO0	XLON
348	2140.00	14:29:02	00078621933TRLO0	XLON
414	2140.00	14:29:02	00078621934TRLO0	XLON
77	2140.00	14:29:02	00078621935TRLO0	XLON
388	2140.00	14:29:02	00078621936TRLO0	XLON
390	2140.00	14:29:02	00078621937TRLO0	XLON
448	2140.00	14:29:02	00078621938TRLO0	XLON
389	2140.00	14:29:02	00078621939TRLO0	XLON
425	2140.00	14:29:02	00078621940TRLO0	XLON
458	2140.00	14:29:02	00078621941TRLO0	XLON
76	2140.00	14:29:02	00078621942TRLO0	XLON
394	2135.00	14:33:40	00078622184TRLO0	XLON
392	2135.00	14:33:40	00078622185TRLO0	XLON

For further details:

Oxford Instruments plc

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

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