Transaction in Own Shares

2 February 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 2519.9460 pence per share:

Date of purchase:	30 January 2026
Aggregate number of ordinary shares purchased:	10,000
Lowest price paid per share (GBp):	2505.0000
Highest price paid per share (GBp):	2525.0000
Volume weighted average price paid per share (GBp):	2519.9460

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 56,013,317. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,013,317. 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	2519.9460	10,000

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
336	2515.00	08:38:29	00078913996TRLO0	XLON
3	2515.00	08:51:29	00078914375TRLO0	XLON
3	2515.00	08:51:29	00078914376TRLO0	XLON
5	2515.00	08:59:50	00078914719TRLO0	XLON
333	2515.00	08:59:50	00078914720TRLO0	XLON
10	2515.00	08:59:50	00078914721TRLO0	XLON
318	2515.00	08:59:50	00078914722TRLO0	XLON
216	2515.00	08:59:50	00078914723TRLO0	XLON
2	2515.00	09:14:50	00078915088TRLO0	XLON
16	2515.00	09:14:50	00078915089TRLO0	XLON
150	2515.00	09:14:50	00078915090TRLO0	XLON
175	2515.00	09:14:50	00078915091TRLO0	XLON
41	2510.00	09:23:12	00078915347TRLO0	XLON
81	2510.00	09:23:12	00078915348TRLO0	XLON
53	2510.00	09:23:12	00078915349TRLO0	XLON
332	2515.00	09:38:08	00078915843TRLO0	XLON
3	2510.00	09:46:04	00078916105TRLO0	XLON
169	2510.00	09:46:04	00078916106TRLO0	XLON
355	2510.00	09:46:04	00078916107TRLO0	XLON
8	2525.00	11:20:15	00078918415TRLO0	XLON
59	2525.00	11:20:16	00078918416TRLO0	XLON
9	2525.00	11:20:16	00078918417TRLO0	XLON
240	2525.00	12:48:57	00078921366TRLO0	XLON
3	2525.00	13:05:19	00078921690TRLO0	XLON
362	2525.00	15:04:48	00078924966TRLO0	XLON
55	2525.00	15:04:48	00078924967TRLO0	XLON
345	2525.00	15:04:48	00078924968TRLO0	XLON
33	2525.00	15:04:48	00078924969TRLO0	XLON
352	2525.00	15:04:48	00078924970TRLO0	XLON
365	2525.00	15:04:48	00078924971TRLO0	XLON
402	2525.00	15:04:48	00078924972TRLO0	XLON
337	2525.00	15:04:48	00078924973TRLO0	XLON
349	2525.00	15:04:48	00078924974TRLO0	XLON
332	2525.00	15:04:48	00078924975TRLO0	XLON
177	2525.00	15:04:48	00078924976TRLO0	XLON
185	2525.00	15:04:48	00078924977TRLO0	XLON
408	2525.00	15:04:48	00078924978TRLO0	XLON
378	2525.00	15:04:48	00078924979TRLO0	XLON
548	2520.00	15:04:48	00078924981TRLO0	XLON
332	2505.00	15:11:04	00078925348TRLO0	XLON
389	2510.00	15:24:30	00078925910TRLO0	XLON
224	2510.00	15:42:50	00078927209TRLO0	XLON
59	2510.00	15:42:50	00078927210TRLO0	XLON
104	2510.00	15:42:50	00078927211TRLO0	XLON
34	2525.00	15:52:42	00078927627TRLO0	XLON
307	2525.00	15:53:09	00078927644TRLO0	XLON
200	2525.00	16:05:09	00078928374TRLO0	XLON
186	2525.00	16:05:10	00078928375TRLO0	XLON
337	2525.00	16:12:14	00078928776TRLO0	XLON
280	2525.00	16:15:14	00078928935TRLO0	XLON

For further details:

Oxford Instruments plc

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

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