Oxford Instruments PLC

Transaction in Own Shares • Dec 17, 2025

National Storage Mechanism | Additional information

17 December 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 Deutsche Bank AG, London Branch (trading for these purposes as Deutsche Numis) (“Deutsche Numis”) for cancellation at an average price of 2048.6976 pence per share:

Date of purchase:	16 December 2025
Aggregate number of ordinary shares purchased:	13,195
Lowest price paid per share (GBp):	2035.0000
Highest price paid per share (GBp):	2060.0000
Volume weighted average price paid per share (GBp):	2048.6976

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 56,169,937. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,169,937. 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	2048.6976	13,195

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
394	2055.00	10:00:01	00078396097TRLO0	XLON
77	2055.00	10:00:01	00078396099TRLO0	XLON
495	2055.00	10:00:01	00078396098TRLO0	XLON
10	2055.00	10:29:47	00078396478TRLO0	XLON
26	2055.00	10:29:47	00078396480TRLO0	XLON
27	2055.00	10:29:47	00078396479TRLO0	XLON
29	2055.00	10:31:40	00078396509TRLO0	XLON
15	2055.00	10:46:54	00078396755TRLO0	XLON
346	2055.00	11:06:38	00078397225TRLO0	XLON
392	2055.00	11:06:38	00078397224TRLO0	XLON
173	2055.00	11:06:38	00078397223TRLO0	XLON
101	2055.00	11:06:38	00078397222TRLO0	XLON
53	2055.00	11:06:38	00078397221TRLO0	XLON
11	2055.00	11:06:38	00078397220TRLO0	XLON
264	2055.00	11:06:38	00078397219TRLO0	XLON
358	2045.00	11:17:59	00078397469TRLO0	XLON
52	2060.00	11:45:10	00078397888TRLO0	XLON
9	2060.00	11:45:10	00078397889TRLO0	XLON
1073	2060.00	11:45:10	00078397890TRLO0	XLON
346	2055.00	12:03:22	00078398152TRLO0	XLON
372	2055.00	12:03:22	00078398151TRLO0	XLON
306	2050.00	12:08:32	00078398194TRLO0	XLON
17	2050.00	12:08:32	00078398193TRLO0	XLON
4	2055.00	12:52:00	00078399115TRLO0	XLON
289	2055.00	12:52:00	00078399114TRLO0	XLON
12	2055.00	12:52:00	00078399116TRLO0	XLON
26	2055.00	12:52:09	00078399117TRLO0	XLON
12	2055.00	12:56:00	00078399221TRLO0	XLON
15	2055.00	12:56:00	00078399220TRLO0	XLON
3	2055.00	12:56:00	00078399219TRLO0	XLON
103	2055.00	13:24:34	00078399628TRLO0	XLON
6	2055.00	13:37:10	00078399965TRLO0	XLON
124	2055.00	13:37:36	00078399972TRLO0	XLON
159	2055.00	13:38:37	00078399994TRLO0	XLON
177	2055.00	13:38:37	00078399993TRLO0	XLON
48	2055.00	13:38:37	00078399992TRLO0	XLON
391	2055.00	13:38:37	00078399991TRLO0	XLON
124	2055.00	13:38:37	00078399990TRLO0	XLON
566	2050.00	13:42:57	00078400065TRLO0	XLON
321	2045.00	13:43:27	00078400082TRLO0	XLON
365	2035.00	13:48:22	00078400170TRLO0	XLON
394	2040.00	14:23:23	00078400766TRLO0	XLON
327	2035.00	14:29:53	00078400888TRLO0	XLON
394	2035.00	14:29:53	00078400887TRLO0	XLON
241	2040.00	14:54:54	00078401584TRLO0	XLON
75	2045.00	14:59:59	00078401681TRLO0	XLON
18	2045.00	14:59:59	00078401680TRLO0	XLON
69	2045.00	14:59:59	00078401679TRLO0	XLON
667	2040.00	15:02:03	00078401754TRLO0	XLON
73	2035.00	15:16:04	00078402202TRLO0	XLON
50	2035.00	15:16:04	00078402203TRLO0	XLON
164	2035.00	15:22:55	00078402406TRLO0	XLON
131	2035.00	15:24:51	00078402526TRLO0	XLON
391	2035.00	15:25:24	00078402576TRLO0	XLON
152	2035.00	15:25:24	00078402575TRLO0	XLON
44	2035.00	15:25:24	00078402574TRLO0	XLON
199	2035.00	15:25:24	00078402573TRLO0	XLON
14	2045.00	15:51:15	00078403681TRLO0	XLON
373	2050.00	16:09:15	00078404548TRLO0	XLON
366	2050.00	16:09:15	00078404547TRLO0	XLON
393	2050.00	16:09:15	00078404546TRLO0	XLON
850	2050.00	16:09:15	00078404545TRLO0	XLON
119	2050.00	16:09:15	00078404544TRLO0	XLON

For further details:

Oxford Instruments plc

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

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