Oxford Instruments PLC

Transaction in Own Shares • Dec 15, 2025

National Storage Mechanism | Additional information

15 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 2062.6858 pence per share:

Date of purchase:	12 December 2025
Aggregate number of ordinary shares purchased:	12,000
Lowest price paid per share (GBp):	2050.0000
Highest price paid per share (GBp):	2065.0000
Volume weighted average price paid per share (GBp):	2062.6858

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 56,197,148. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,197,148. 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	2062.6858	12,000

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
4	2055.00	08:46:38	00078366269TRLO0	XLON
10	2055.00	09:10:34	00078366849TRLO0	XLON
323	2065.00	12:32:14	00078371500TRLO0	XLON
308	2065.00	12:32:14	00078371501TRLO0	XLON
323	2065.00	12:32:14	00078371502TRLO0	XLON
333	2065.00	12:32:14	00078371503TRLO0	XLON
288	2065.00	12:32:14	00078371504TRLO0	XLON
349	2065.00	12:32:14	00078371505TRLO0	XLON
275	2065.00	12:32:14	00078371506TRLO0	XLON
136	2065.00	12:33:14	00078371514TRLO0	XLON
193	2065.00	12:33:14	00078371515TRLO0	XLON
4	2065.00	12:40:14	00078371623TRLO0	XLON
272	2065.00	12:40:14	00078371624TRLO0	XLON
72	2065.00	12:52:14	00078371795TRLO0	XLON
78	2065.00	12:52:14	00078371796TRLO0	XLON
12	2065.00	12:52:14	00078371797TRLO0	XLON
157	2065.00	12:52:15	00078371798TRLO0	XLON
8	2060.00	12:53:17	00078371815TRLO0	XLON
4	2060.00	12:54:42	00078371838TRLO0	XLON
4	2060.00	12:54:53	00078371840TRLO0	XLON
4	2060.00	12:55:20	00078371849TRLO0	XLON
4	2060.00	12:55:31	00078371851TRLO0	XLON
4	2060.00	12:55:58	00078371853TRLO0	XLON
248	2060.00	12:56:00	00078371854TRLO0	XLON
319	2060.00	12:56:00	00078371855TRLO0	XLON
162	2060.00	13:31:15	00078372377TRLO0	XLON
160	2060.00	13:31:15	00078372378TRLO0	XLON
300	2060.00	13:46:15	00078372633TRLO0	XLON
37	2060.00	13:46:15	00078372634TRLO0	XLON
304	2055.00	13:57:46	00078372911TRLO0	XLON
287	2055.00	13:57:46	00078372912TRLO0	XLON
295	2050.00	13:57:46	00078372913TRLO0	XLON
69	2060.00	14:20:15	00078373532TRLO0	XLON
14	2060.00	14:20:15	00078373533TRLO0	XLON
75	2060.00	14:20:15	00078373534TRLO0	XLON
69	2060.00	14:20:15	00078373535TRLO0	XLON
330	2060.00	14:29:15	00078373777TRLO0	XLON
68	2060.00	14:30:21	00078373819TRLO0	XLON
4	2060.00	14:30:21	00078373820TRLO0	XLON
35	2060.00	14:40:19	00078374209TRLO0	XLON
12	2060.00	14:40:19	00078374210TRLO0	XLON
262	2060.00	14:40:19	00078374211TRLO0	XLON
4	2060.00	14:46:19	00078374490TRLO0	XLON
8	2060.00	14:46:19	00078374491TRLO0	XLON
12	2060.00	14:46:19	00078374492TRLO0	XLON
87	2060.00	14:46:19	00078374493TRLO0	XLON
29	2060.00	14:46:19	00078374494TRLO0	XLON
4	2060.00	14:46:20	00078374495TRLO0	XLON
469	2060.00	14:47:14	00078374568TRLO0	XLON
196	2060.00	14:59:31	00078375159TRLO0	XLON
65	2060.00	14:59:31	00078375160TRLO0	XLON
70	2060.00	14:59:31	00078375161TRLO0	XLON
323	2060.00	15:00:20	00078375248TRLO0	XLON
77	2065.00	15:00:20	00078375249TRLO0	XLON
199	2065.00	15:00:20	00078375250TRLO0	XLON
308	2065.00	16:20:37	00078379910TRLO0	XLON
315	2065.00	16:20:37	00078379911TRLO0	XLON
260	2065.00	16:20:37	00078379912TRLO0	XLON
62	2065.00	16:20:37	00078379913TRLO0	XLON
93	2065.00	16:20:37	00078379914TRLO0	XLON
154	2065.00	16:20:37	00078379915TRLO0	XLON
37	2065.00	16:20:37	00078379916TRLO0	XLON
334	2065.00	16:20:37	00078379917TRLO0	XLON
287	2065.00	16:20:37	00078379918TRLO0	XLON
291	2065.00	16:20:37	00078379919TRLO0	XLON
51	2065.00	16:20:37	00078379920TRLO0	XLON
284	2065.00	16:20:37	00078379921TRLO0	XLON
332	2065.00	16:20:37	00078379922TRLO0	XLON
342	2065.00	16:20:37	00078379923TRLO0	XLON
327	2065.00	16:20:37	00078379924TRLO0	XLON
158	2065.00	16:20:37	00078379925TRLO0	XLON
167	2065.00	16:20:37	00078379926TRLO0	XLON
118	2065.00	16:20:37	00078379927TRLO0	XLON
1	2065.00	16:20:37	00078379928TRLO0	XLON
167	2065.00	16:20:37	00078379929TRLO0	XLON
154	2065.00	16:20:37	00078379930TRLO0	XLON

For further details:

Oxford Instruments plc

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

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