Oxford Instruments PLC

Transaction in Own Shares • Nov 11, 2025

National Storage Mechanism | Additional information

11 November 2025

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 Numis Securities Limited (“Deutsche Numis”) for cancellation at an average price of 1807.5192 pence per share:

Date of purchase:	10 November 2025
Aggregate number of ordinary shares purchased:	30,000
Lowest price paid per share (GBp):	1800.0000
Highest price paid per share (GBp):	1810.0000
Volume weighted average price paid per share (GBp):	1807.5192

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 56,468,035. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,468,035. 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	1807.5192	30,000

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
274	1810.00	08:31:56	00077858481TRLO0	XLON
22	1810.00	08:34:57	00077858658TRLO0	XLON
243	1810.00	12:06:27	00077866528TRLO0	XLON
235	1810.00	12:06:27	00077866529TRLO0	XLON
269	1810.00	12:06:27	00077866530TRLO0	XLON
235	1810.00	12:06:27	00077866531TRLO0	XLON
276	1810.00	12:06:27	00077866532TRLO0	XLON
255	1810.00	12:06:27	00077866533TRLO0	XLON
263	1810.00	12:06:27	00077866534TRLO0	XLON
188	1810.00	12:06:27	00077866535TRLO0	XLON
277	1810.00	12:06:27	00077866536TRLO0	XLON
56	1810.00	12:06:27	00077866537TRLO0	XLON
238	1810.00	12:06:27	00077866538TRLO0	XLON
242	1810.00	12:06:27	00077866539TRLO0	XLON
274	1810.00	12:06:27	00077866540TRLO0	XLON
275	1810.00	12:06:27	00077866541TRLO0	XLON
315	1808.00	12:06:29	00077866543TRLO0	XLON
10000	1810.00	12:08:54	00077866593TRLO0	XLON
226	1806.00	12:19:20	00077866813TRLO0	XLON
48	1806.00	12:19:20	00077866814TRLO0	XLON
249	1810.00	12:24:24	00077866961TRLO0	XLON
286	1810.00	12:24:32	00077866978TRLO0	XLON
68	1810.00	12:24:32	00077866979TRLO0	XLON
269	1806.00	12:44:00	00077867446TRLO0	XLON
183	1806.00	12:59:00	00077867891TRLO0	XLON
51	1806.00	12:59:00	00077867892TRLO0	XLON
275	1808.00	13:16:26	00077868249TRLO0	XLON
201	1804.00	13:25:05	00077868376TRLO0	XLON
55	1804.00	13:25:05	00077868377TRLO0	XLON
273	1802.00	13:26:50	00077868391TRLO0	XLON
400	1808.00	14:03:50	00077869206TRLO0	XLON
265	1808.00	14:03:50	00077869207TRLO0	XLON
257	1808.00	14:03:50	00077869208TRLO0	XLON
97	1808.00	14:03:50	00077869209TRLO0	XLON
275	1808.00	14:11:35	00077869367TRLO0	XLON
74	1808.00	14:16:03	00077869512TRLO0	XLON
56	1808.00	14:16:03	00077869513TRLO0	XLON
223	1808.00	14:31:58	00077870124TRLO0	XLON
30	1808.00	14:31:58	00077870125TRLO0	XLON
231	1808.00	14:31:58	00077870126TRLO0	XLON
229	1806.00	14:32:45	00077870171TRLO0	XLON
238	1806.00	14:36:45	00077870325TRLO0	XLON
104	1806.00	14:40:57	00077870503TRLO0	XLON
75	1806.00	14:40:57	00077870504TRLO0	XLON
10000	1805.00	14:43:45	00077870607TRLO0	XLON
239	1804.00	14:44:03	00077870617TRLO0	XLON
224	1804.00	15:12:15	00077872844TRLO0	XLON
38	1804.00	15:14:59	00077873006TRLO0	XLON
2	1804.00	15:14:59	00077873007TRLO0	XLON
267	1802.00	15:40:42	00077874496TRLO0	XLON
104	1802.00	15:40:42	00077874497TRLO0	XLON
104	1804.00	15:40:42	00077874498TRLO0	XLON
16	1804.00	15:40:42	00077874499TRLO0	XLON
140	1800.00	16:09:26	00077876482TRLO0	XLON
92	1800.00	16:09:26	00077876483TRLO0	XLON
30	1800.00	16:09:26	00077876484TRLO0	XLON
1	1800.00	16:09:26	00077876485TRLO0	XLON
59	1800.00	16:09:27	00077876486TRLO0	XLON
9	1800.00	16:09:27	00077876487TRLO0	XLON

For further details:

Oxford Instruments plc

Stephen Lamacraft, Head of Investor Relations    Tel: +44 7776 433 916

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