REG — SDI Group PLC — Grant of Share Option Awards

For best results when printing this announcement, please click on link below: RNS Number: 0613W SDI Group PLC 24 September 2026 SDI Group plc (“SDI”, the “Company” or the “Group”) Grant of Share Option Awards 24 September 2026 — SDI Group plc, the buy and build group, focused on companies which design and manufacture specialist lab equipment, industrial & scientific sensors and industrial & scientific products, announces details of the grant of share option awards on 23 September 2026 to the Company’s Executive Directors in respect of Ordinary Shares of 1 pence each in the Company. Two separate awards were granted to each Executive Director.

The first award is a deferred bonus award in respect of SDI’s financial year ended 30 April 2026 granted under the Company’s Long Term Incentive Plan 2025 ("LTIP"). The second award is a performance based LTIP award, also granted under the Company’s Long Term Incentive Plan 2025 (together, the "Grants"). The deferred bonus awards have an exercise price per share of 1 pence and are exercisable one year from the grant date and have no performance conditions.

The LTIP awards have an exercise price per share of 1 pence and are ordinarily exercisable three years from the grant date subject to continued service and to the extent that performance conditions measured over a 3-year performance period are met. The LTIP awards are also subject to net of tax post vesting holding period to be determined by the Remuneration Committee. The performance conditions for the awards are linked to the Company's growth in EPS and total shareholder return. Each of the awards is subject to the rules of the LTIP including its good/bad leaver terms and its malus and claw back provisions.

The following awards have been made: Name Role LTIP award Vesting Date Deferred bonus award Vesting Date Total options following the Grants (no. of shares) (no. com) About SDI Group plc SDI Group plc ( ), is a buy and build group, focused on companies which design and manufacture specialist lab equipment, industrial & scientific sensors and industrial & scientific products. The Group includes small to medium size companies with specialist industrial and scientific products in growth sector niches which help solve customers’ key challenges.

It specialises in the acquisition and development of companies that design and manufacture specialist products for use in lab equipment, industrial & scientific sensors and industrial & scientific products. Its portfolio of businesses serves a broad spectrum of specialised markets, ranging from advanced industrial technologies (aerospace & defence, manufacturing, semiconductors and precision measurement) to scientific and medical applications (life sciences, healthcare, astronomy).

SDI aims to continue its growth through driving the organic growth of its portfolio companies and by the acquisition of complementary technology businesses with established reputations in global markets. For more information, please see: Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them: 1. Details of the person discharging managerial responsibilities / person closely associated a) Name Stephen Brown 2. Reason for the Notification a) Position/status Chief Executive Officer b) Initial notification/Amendment Initial notification 3.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor a) Name SDI Group plc b) LEI 213800YA3XW7JRE46Z70 4. Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted a) Description of the Financial instrument, type of instrument Ordinary Shares of 1 pence each Identification code GB00B3FBWW43 b) Nature of the transaction 1. Grant of a deferred bonus award under the SDI Group plc Long Term Incentive Plan 2025. 2.

Grant of a LTIP award under the SDI Group plc Long Term Incentive Plan 2025. Each award is structured as an option over Ordinary Shares and have an associated exercise price of 1 pence per Ordinary Share. c) Price(s) and volume(s) Price (s) Volume(s) 1. Nil 303,589 1.

Nil 353,863 Price (s) Volume(s) 1. Nil 303,589 1. Nil 353,863 d) Aggregated information: *Aggregated volume 657,452 *Price Nil e) Date of the transaction 23 September 2026 f) Place of the transaction Outside a trading venue d) Aggregated information: * Aggregated volume * Price 657,452 Nil e) Date of the transaction 23 September 2026 f) Place of the transaction Outside a trading venue 1. Details of the person discharging managerial responsibilities / person closely associated a) Name Amitabh Sharma 2.

Reason for the Notification a) Position/status Chief Financial Officer b) Initial notification/Amendment Initial notification 3. Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor a) Name SDI Group plc b) LEI 213800YA3XW7JRE46Z70 4. Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted a) Description of the Financial instrument, type of instrument Ordinary Shares of 1 pence each Identification code GB00B3FBWW43 b) Nature of the transaction 1.

Grant of a deferred bonus award under the SDI Group plc Long Term Incentive Plan 2025. 2. Grant of a LTIP award under the SDI Group plc Long Term Incentive Plan 2025. Each award is structured as an option over Ordinary Shares and have an associated exercise price of 1 pence per Ordinary Share.

c) Price(s) and volume(s) Price (s) Volume(s) 1. Nil 240,196 1. Nil 302,612 Price (s) Volume(s) 1. Nil 240,196 1.

Nil 302,612 d) Aggregated information: *Aggregated volume 542,808 *Price Nil e) Date of the transaction 23 September 2026 f) Place of the transaction Outside a trading venue d) Aggregated information: * Aggregated volume * Price 542,808 Nil e) Date of the transaction 23 September 2026 f) Place of the transaction Outside a trading venue This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. com) or visit ( ).

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