Transaction in Own Shares

8 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 2160.2113 pence per share:

Date of purchase:	7 January 2026
Aggregate number of ordinary shares purchased:	8,945
Lowest price paid per share (GBp):	2150.0000
Highest price paid per share (GBp):	2165.0000
Volume weighted average price paid per share (GBp):	2160.2113

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 56,128,181. The Company holds no shares in treasury and therefore the total number of voting rights in the Company will be 56,128,181. 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	2160.2113	8,945

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
227	2155.00	08:44:01	00078536733TRLO0	XLON
239	2155.00	08:44:01	00078536732TRLO0	XLON
377	2150.00	08:49:11	00078536886TRLO0	XLON
425	2155.00	09:53:15	00078539653TRLO0	XLON
403	2155.00	09:53:15	00078539654TRLO0	XLON
6	2155.00	11:42:56	00078545980TRLO0	XLON
1	2155.00	11:42:56	00078545981TRLO0	XLON
4850	2165.00	13:21:25	00078550399TRLO0	XLON
468	2155.00	14:29:09	00078552898TRLO0	XLON
432	2155.00	14:29:09	00078552899TRLO0	XLON
16	2155.00	14:29:09	00078552900TRLO0	XLON
51	2155.00	14:29:42	00078552935TRLO0	XLON
194	2155.00	14:29:42	00078552936TRLO0	XLON
3	2155.00	14:29:42	00078552937TRLO0	XLON
8	2155.00	14:29:42	00078552938TRLO0	XLON
67	2155.00	14:46:21	00078554079TRLO0	XLON
54	2155.00	14:48:21	00078554203TRLO0	XLON
376	2155.00	15:00:25	00078555213TRLO0	XLON
393	2155.00	15:01:01	00078555237TRLO0	XLON
153	2155.00	15:42:35	00078557978TRLO0	XLON
7	2155.00	15:46:42	00078558154TRLO0	XLON
186	2155.00	15:46:42	00078558155TRLO0	XLON
9	2155.00	15:46:42	00078558156TRLO0	XLON

For further details:

Oxford Instruments plc

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

---

---