Transaction in Own Shares

22 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 2335.3431 pence per share:

Date of purchase:	21 January 2026
Aggregate number of ordinary shares purchased:	5,596
Lowest price paid per share (GBp):	2325.0000
Highest price paid per share (GBp):	2340.0000
Volume weighted average price paid per share (GBp):	2335.3431

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 56,077,632. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,077,632. 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	2335.3431	5,596

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
30	2335.00	08:39:33	00078758840TRLO0	XLON
166	2335.00	08:39:33	00078758841TRLO0	XLON
438	2340.00	10:01:19	00078762099TRLO0	XLON
250	2340.00	10:01:19	00078762101TRLO0	XLON
155	2340.00	10:01:19	00078762102TRLO0	XLON
157	2340.00	10:01:19	00078762104TRLO0	XLON
232	2340.00	10:01:19	00078762105TRLO0	XLON
483	2335.00	10:04:23	00078762225TRLO0	XLON
33	2340.00	10:32:12	00078763684TRLO0	XLON
98	2340.00	10:32:12	00078763685TRLO0	XLON
37	2340.00	10:32:12	00078763686TRLO0	XLON
55	2335.00	10:36:53	00078763836TRLO0	XLON
409	2335.00	10:36:53	00078763837TRLO0	XLON
64	2335.00	10:55:06	00078764396TRLO0	XLON
3	2335.00	10:55:06	00078764397TRLO0	XLON
357	2335.00	11:05:24	00078764774TRLO0	XLON
389	2335.00	11:05:24	00078764775TRLO0	XLON
13	2330.00	11:18:37	00078765219TRLO0	XLON
424	2330.00	11:18:37	00078765220TRLO0	XLON
425	2325.00	11:38:00	00078765849TRLO0	XLON
91	2335.00	12:50:46	00078768274TRLO0	XLON
74	2335.00	12:50:46	00078768275TRLO0	XLON
16	2335.00	12:50:46	00078768276TRLO0	XLON
16	2335.00	12:50:46	00078768277TRLO0	XLON
100	2335.00	12:50:46	00078768278TRLO0	XLON
64	2335.00	13:06:22	00078768711TRLO0	XLON
61	2335.00	13:06:22	00078768712TRLO0	XLON
116	2335.00	13:06:22	00078768713TRLO0	XLON
70	2335.00	13:06:22	00078768714TRLO0	XLON
61	2335.00	13:06:22	00078768715TRLO0	XLON
35	2335.00	13:18:12	00078769146TRLO0	XLON
56	2335.00	13:18:12	00078769147TRLO0	XLON
81	2335.00	13:18:12	00078769148TRLO0	XLON
100	2335.00	13:18:12	00078769149TRLO0	XLON
61	2335.00	13:18:12	00078769150TRLO0	XLON
105	2335.00	13:18:12	00078769151TRLO0	XLON
3	2340.00	13:46:00	00078770068TRLO0	XLON
40	2340.00	13:46:00	00078770069TRLO0	XLON
16	2340.00	13:46:00	00078770070TRLO0	XLON
19	2340.00	13:46:00	00078770071TRLO0	XLON
10	2340.00	13:46:00	00078770072TRLO0	XLON
100	2340.00	13:46:00	00078770073TRLO0	XLON
17	2340.00	13:48:00	00078770153TRLO0	XLON
38	2340.00	13:51:22	00078770265TRLO0	XLON
14	2340.00	13:51:22	00078770266TRLO0	XLON
14	2340.00	13:51:22	00078770267TRLO0	XLON

For further details:

Oxford Instruments plc

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

---

---