Transaction in Own Shares

7 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 2089.5241 pence per share:

Date of purchase:	6 January 2026
Aggregate number of ordinary shares purchased:	3,803
Lowest price paid per share (GBp):	2070.0000
Highest price paid per share (GBp):	2100.0000
Volume weighted average price paid per share (GBp):	2089.5241

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 56,137,126. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,137,126. 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	2089.5241	3,803

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
7	2090.00	08:23:41	00078513630TRLO0	XLON
250	2090.00	08:23:41	00078513631TRLO0	XLON
178	2090.00	08:23:41	00078513632TRLO0	XLON
105	2080.00	08:54:15	00078515157TRLO0	XLON
307	2080.00	08:54:15	00078515158TRLO0	XLON
403	2070.00	09:53:09	00078517959TRLO0	XLON
24	2070.00	09:53:09	00078517960TRLO0	XLON
27	2080.00	11:04:27	00078519634TRLO0	XLON
370	2080.00	11:04:27	00078519635TRLO0	XLON
1	2080.00	11:04:27	00078519636TRLO0	XLON
9	2080.00	11:04:27	00078519637TRLO0	XLON
6	2080.00	11:04:27	00078519638TRLO0	XLON
130	2085.00	11:28:25	00078520463TRLO0	XLON
37	2085.00	11:28:25	00078520464TRLO0	XLON
94	2085.00	11:28:25	00078520465TRLO0	XLON
53	2085.00	11:28:25	00078520466TRLO0	XLON
2	2085.00	11:28:25	00078520467TRLO0	XLON
2	2085.00	11:28:25	00078520468TRLO0	XLON
16	2085.00	11:28:25	00078520469TRLO0	XLON
50	2085.00	11:46:01	00078520955TRLO0	XLON
1	2085.00	11:46:01	00078520956TRLO0	XLON
19	2090.00	12:00:16	00078521502TRLO0	XLON
1	2090.00	12:00:16	00078521503TRLO0	XLON
39	2095.00	12:02:19	00078521620TRLO0	XLON
2	2095.00	12:02:19	00078521621TRLO0	XLON
66	2100.00	12:02:37	00078521632TRLO0	XLON
108	2100.00	12:02:37	00078521633TRLO0	XLON
272	2100.00	12:02:37	00078521634TRLO0	XLON
244	2100.00	12:07:00	00078521741TRLO0	XLON
189	2100.00	12:07:00	00078521742TRLO0	XLON
99	2100.00	12:20:00	00078522087TRLO0	XLON
315	2100.00	12:20:00	00078522088TRLO0	XLON
377	2100.00	12:20:00	00078522089TRLO0	XLON

For further details:

Oxford Instruments plc

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

---

---