Oxford Instruments Plc - Holding(s) in Company

TR-1: Standard form for notification of major holdings 1. Issuer Details ISIN GB0006650450 Issuer Name OXFORD INSTRUMENTS PLC UK or Non-UK Issuer UK 2. Reason for Notification An acquisition or disposal of voting rights 3. Details of person subject to the notification obligation Name Artemis Investment Management LLP City of registered office (if applicable) London Country of registered office (if applicable) United Kingdom 4. Details of the shareholder +----+-------------------------+----------------------------+ |Name|City of registered office|Country of registered office| +----+-------------------------+----------------------------+ | | | | +----+-------------------------+----------------------------+ 5. Date on which the threshold was crossed or reached 11-Apr-2025 6. Date on which Issuer notified 14-Apr-2025 7. Total positions of person(s) subject to the notification obligation +----------------+-----------+------------------+----------+------------+ | |% of voting|% of voting rights|Total of |Total number| | |rights |through financial |both |of voting | | |attached to|instruments (total|in % (8.A |rights held | | |shares |of 8.B 1 + 8.B 2) |+ |in issuer | | |(total | |8.B) | | | |of 8.A) | | | | +----------------+-----------+------------------+----------+------------+ |Resulting |13.348248% | |13.348248%|7,759,974.00| |situation on the| | | | | |date on | | | | | |which threshold | | | | | |was crossed or | | | | | |reached | | | | | +----------------+-----------+------------------+----------+------------+ |Position of |12.120135% | |12.120135%| | |previous | | | | | |notification | | | | | |(if applicable) | | | | | +----------------+-----------+------------------+----------+------------+ 8. Notified details of the resulting situation on the date on which the threshold was crossed or reached 8A. Voting rights attached to shares +------------+----------------+------------------+-------------+-------------+ |Class/Type |Number of direct|Number of indirect|% of direct |% of indirect| |of shares |voting rights |voting rights |voting rights|voting rights| |ISIN code(if|(DTR5.1) |(DTR5.2.1) |(DTR5.1) |(DTR5.2.1) | |possible) | | | | | +------------+----------------+------------------+-------------+-------------+ |GB0006650450| |7,759,974.00 | |13.348248% | +------------+----------------+------------------+-------------+-------------+ |Sub Total |7,759,974.00 |13.348248% | |8.A | | | +------------+----------------+------------------+-------------+-------------+ 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) +----------+----------+---------+-----------------------------------+------+ |Type of |Expiration|Exercise/|Number of voting rights that may be|% of | |financial |date |conve |acquired if the instrument is |voting| |instrument| |rsion |exercised/converted |rights| | | |period | | | +----------+----------+---------+-----------------------------------+------+ | | | | | | +----------+----------+---------+-----------------------------------+------+ |Sub Total | | | | |8.B1 | | | | +----------+----------+---------+-----------------------------------+------+ 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) +--------------+----------+--------------+-----------+---------+------+ |Type of |Expiration|Exercise/conve|Physical or|Number of|% of | |financial |date |rsion period |cash |voting |voting| |instrument | | |settlement |rights |rights| +--------------+----------+--------------+-----------+---------+------+ | | | | | | | +--------------+----------+--------------+-----------+---------+------+ |Sub Total 8.B2| | | | +--------------+----------+--------------+-----------+---------+------+ 9. Information in relation to the person subject to the notification obligation Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entityxiv (please add additional rows as necessary) +-----------+-----------+------------------+-----------+----------------+ |Ultimate |Name of |% of voting rights|% of voting|Total of both if| |controlling|controlled |if it equals or is|rights |it equals or is | |person |undertaking|higher than the |through |higher than the | | | |notifiable |financial |notifiable | | | |threshold |instruments|threshold | | | | |if it | | | | | |equals or | | | | | |is higher | | | | | |than the | | | | | |notifiable | | | | | |threshold | | +-----------+-----------+------------------+-----------+----------------+ |Artemis |Artemis |13.348248% |0.000000 |13.348248% | |Investment |Investment | | | | |Management |Management | | | | |LLP |LLP | | | | +-----------+-----------+------------------+-----------+----------------+ |Artemis |Artemis |11.769035% |0.000000 |11.769035% | |Investment |Fund | | | | |Management |Managers | | | | |LLP |Limited | | | | +-----------+-----------+------------------+-----------+----------------+ 10. In case of proxy voting Name of the proxy holder The number and % of voting rights held The date until which the voting rights will be held 11. Additional Information 12. Date of Completion 14-Apr-2025 13. Place Of Completion Edinburgh This information was brought to you by Cision http://news.cision.com

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