SANDERSON DESIGN GROUP PLC

("Sanderson Design Group", the "Company" or the "Group")

Disclosure of LTIP performance condition targets

Further to the announcement made on 8 June 2026, in which the Company disclosed it granted nil-cost options (the "Awards") over ordinary shares of 1 pence each in the Company (the "Shares") to eight PDMRs under the Sanderson Design Group PLC Long Term Incentive Plan (the "LTIP"), the Company confirms the performance condition targets that apply to the Awards are as follows:

25% of the Awards will vest at threshold performance, 50% of the Awards will vest at target and 100% of the Awards will vest at maximum performance. There will be straight line vesting between threshold and target and again between target and maximum.

The Awards shall vest on 08 June 2029 subject to each PDMR's continued service with the Company and the extent to which the performance conditions applicable to the Awards are achieved. In the case of the Awards granted to Lisa Montague, CEO, and Mike Woodcock, CFO, any Ordinary Shares which vest will be subject to a voluntary additional two-year holding period (on a net of tax basis) from the Vesting Date.

The Remuneration Committee believes that the above targets represent a significant degree of stretch.  The Committee will also consider the formulaic outcome at the time of vesting to ensure this is aligned with the holistic performance achieved and the broader stakeholder experience, and may use discretion to adjust the outcome if appropriate in the specific circumstances.

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About Sanderson Design Group

Sanderson Design Group PLC is a luxury interior furnishings company that designs, manufactures and markets wallpapers, fabrics and paints. In addition, the Company derives licensing income from the use of its designs on a wide range of products such as bed and bath collections, rugs, blinds and tableware.

Sanderson Design Group's brands include Zoffany, Sanderson, Morris & Co., Harlequin, Clarke & Clarke and Scion.

The Company has a strong UK manufacturing base comprising Anstey wallpaper factory in Loughborough and Standfast & Barracks, a fabric printing factory, in Lancaster. Both sites manufacture for the Company and for other wallpaper and fabric brands.

Sanderson Design Group employs approximately 500 people and its products are sold worldwide. It has showrooms in London, New York and Chicago.

Sanderson Design Group trades on the AIM market of the London Stock Exchange under the ticker symbol SDG.

For further information please visit: www.sandersondesigngroup.com.