Business
Holding(s) in Company
The Capital Group Companies, Inc. has increased its holding in Diploma PLC, now controlling 13.016447% of the voting rights, representing 17,483,353 shares. This acquisition crossed the notification threshold on January 23, 2026, with the company notifying Diploma PLC on January 26, 2026. The previous notification showed a holding of 12.955690%. The increase is attributed to discretionary investment management by various affiliated investment companies within The Capital Group Companies, Inc. structure. Disclaimer*
About this update from Diploma Plc
10-11 CHARTERHOUSE SQUARE, LONDON EC1M 6EE TELEPHONE: +44 (0)20 7549 5700 27 January 2026 TR-1: Standard form for notification of major holdings 1. Issuer Details ISIN GB0001826634 Issuer Name DIPLOMA 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 The Capital Group Companies, Inc. City of registered office (if applicable) Los Angeles Country of registered office (if applicable) USA 4. Details of the shareholder Full name of shareholder(s) if different from the person(s) subject to the notification obligation, above City of registered office (if applicable) Country of registered office (if applicable) 5. Date on which the threshold was crossed or reached 23-Jan-2026 6. Date on which Issuer notified 26-Jan-2026 7. Total positions of person(s) subject to the notification obligation % of voting rights attached to shares (total of 8.A) % of voting rights through financial instruments (total of 8.B 1 + 8.B 2) Total of both in % (8.A + 8.B) Total number of voting rights held in issuer Resulting situation on the date on which threshold was crossed or reached 13.016447 0.000000 13.016447 17483353 Position of previous notification (if applicable) 12.955690 0.000000 12.955690 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 of shares ISIN code(if possible) Number of direct voting rights (DTR5.1) Number of indirect voting rights (DTR5.2.1) % of direct voting rights (DTR5.1) % of indirect voting rights (DTR5.2.1) GB0001826634 Common Stock 17483353 13.016447 Sub Total 8.A 17483353 13.016447% 8B1. Financial Instruments according to (DTR5.3.1R.(1) (a)) Type of financial instrument Expiration date Exercise/conversion period Number of voting rights that may be acquired if the instrument is exercised/converted % of voting rights Sub Total 8.B1 8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b)) Type of financial instrument Expiration date Exercise/conversion period Physical or cash settlement Number of voting rights % of voting rights Sub Total 8.B2 9. Information in relation to the person subject to the notification obligation 2. 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 entities (please add additional rows as necessary) Ultimate controlling person Name of controlled undertaking % of voting rights if it equals or is higher than the notifiable threshold % of voting rights through financial instruments if it equals or is higher than the notifiable threshold Total of both if it equals or is higher than the notifiable threshold The Capital Group Companies, Inc. Capital Research and Management Company 12.834270 12.834270% The Capital Group Companies, Inc. Capital International Limited The Capital Group Companies, Inc. Capital International Sarl The Capital Group Companies, Inc. Capital International, Inc. The Capital Group Companies, Inc. SMALLCAP World Fund, Inc. (a mutual fund managed by Capital Research and Management Company) 7.720077 7.720077% 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 The Capital Group Companies, Inc. ("CGC") is the parent company of Capital Research and Management Company ("CRMC") and Capital Bank & Trust Company ("CB&T"). CRMC is a U.S.-based investment management company that serves as investment manager to the American Funds family of mutual funds, other pooled investment vehicles, as well as individual and institutional clients. CRMC and its investment manager affiliates manage equity assets for various investment companies through three divisions, Capital Research Global Investors, Capital International Investors and Capital World Investors. CRMC is the parent company of Capital Group International, Inc. ("CGII"), which in turn is the parent company of six investment management companies ("CGII management companies"): Capital International, Inc., Capital International Limited, Capital International Sàrl, Capital International K.K., Capital Group Private Client Services Inc, and Capital Group Investment Management Private Limited. CGII management companies primarily serve as investment managers to institutional and high net worth clients. CB&T is a U.S.-based registered investment adviser and an affiliated federally chartered bank. Neither CGC nor any of its affiliates own shares of the Issuer for its own account. Rather, the shares reported on this Notification are owned by accounts under the discretionary investment management of one or more of the investment management companies described above. 12. Date of Completion 26-Jan-2026 13. Place Of Completion Los Angeles