Transaction in Own Shares

15 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 2192.1760 pence per share:

Date of purchase:	14 January 2026
Aggregate number of ordinary shares purchased:	10,000
Lowest price paid per share (GBp):	2175.0000
Highest price paid per share (GBp):	2200.0000
Volume weighted average price paid per share (GBp):	2192.1760

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 56,104,277. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,104,277. 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	2192.1760	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
80	2200.00	08:18:55	00078648755TRLO0	XLON
32	2200.00	08:33:16	00078649494TRLO0	XLON
291	2200.00	08:33:16	00078649495TRLO0	XLON
450	2195.00	08:47:58	00078650186TRLO0	XLON
428	2195.00	08:58:37	00078650652TRLO0	XLON
330	2195.00	10:22:06	00078653952TRLO0	XLON
46	2195.00	10:22:06	00078653953TRLO0	XLON
206	2190.00	10:45:27	00078654808TRLO0	XLON
118	2190.00	10:45:27	00078654809TRLO0	XLON
91	2190.00	10:45:27	00078654810TRLO0	XLON
357	2190.00	10:45:27	00078654811TRLO0	XLON
22	2190.00	10:45:27	00078654812TRLO0	XLON
3	2190.00	11:06:31	00078655603TRLO0	XLON
3	2190.00	11:06:31	00078655604TRLO0	XLON
94	2190.00	11:13:14	00078655810TRLO0	XLON
3	2190.00	11:13:14	00078655811TRLO0	XLON
8	2190.00	11:13:20	00078655814TRLO0	XLON
449	2190.00	11:46:40	00078656450TRLO0	XLON
388	2190.00	12:00:00	00078656748TRLO0	XLON
103	2195.00	12:53:26	00078658237TRLO0	XLON
12	2195.00	12:53:26	00078658238TRLO0	XLON
86	2195.00	12:53:26	00078658239TRLO0	XLON
28	2195.00	12:53:26	00078658240TRLO0	XLON
181	2195.00	12:53:26	00078658241TRLO0	XLON
6	2195.00	12:53:26	00078658242TRLO0	XLON
110	2195.00	13:01:56	00078658413TRLO0	XLON
322	2195.00	13:04:52	00078658503TRLO0	XLON
389	2195.00	13:31:03	00078659280TRLO0	XLON
64	2200.00	14:13:52	00078660622TRLO0	XLON
126	2200.00	14:13:52	00078660623TRLO0	XLON
45	2200.00	14:13:52	00078660624TRLO0	XLON
70	2200.00	14:13:52	00078660625TRLO0	XLON
4	2200.00	14:13:52	00078660626TRLO0	XLON
7	2200.00	14:21:00	00078660887TRLO0	XLON
3	2200.00	14:21:00	00078660888TRLO0	XLON
19	2200.00	14:22:00	00078660913TRLO0	XLON
37	2200.00	14:22:00	00078660914TRLO0	XLON
36	2200.00	14:22:00	00078660915TRLO0	XLON
391	2200.00	14:31:49	00078661427TRLO0	XLON
332	2200.00	14:31:49	00078661428TRLO0	XLON
455	2200.00	14:44:24	00078661971TRLO0	XLON
411	2200.00	14:44:24	00078661972TRLO0	XLON
13	2195.00	15:07:08	00078663145TRLO0	XLON
4	2195.00	15:07:38	00078663182TRLO0	XLON
412	2195.00	15:08:21	00078663209TRLO0	XLON
427	2195.00	15:08:21	00078663210TRLO0	XLON
380	2190.00	15:20:14	00078663821TRLO0	XLON
386	2185.00	15:26:43	00078664064TRLO0	XLON
423	2175.00	15:36:17	00078664443TRLO0	XLON
62	2180.00	15:53:36	00078665327TRLO0	XLON
62	2180.00	15:53:36	00078665328TRLO0	XLON
19	2180.00	15:53:36	00078665329TRLO0	XLON
11	2180.00	15:53:36	00078665330TRLO0	XLON
44	2180.00	15:53:36	00078665331TRLO0	XLON
112	2180.00	15:53:36	00078665332TRLO0	XLON
8	2180.00	16:03:36	00078665911TRLO0	XLON
3	2180.00	16:03:36	00078665912TRLO0	XLON
446	2180.00	16:03:36	00078665913TRLO0	XLON
33	2180.00	16:13:17	00078666354TRLO0	XLON
237	2180.00	16:13:17	00078666355TRLO0	XLON
12	2180.00	16:13:17	00078666356TRLO0	XLON
20	2180.00	16:13:17	00078666357TRLO0	XLON
4	2180.00	16:13:17	00078666358TRLO0	XLON
246	2190.00	16:16:30	00078666488TRLO0	XLON

For further details:

Oxford Instruments plc

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

---

---