INSIMIBI INDUSTRIAL HOLDINGS LIMITED (Incorporated in the Republic of South Africa) (Registration number: 2002/029821/06) Share code: ISB ISIN: ZAE000116828 (“Insimbi” or the “Company”) DISCLOSURE OF ACQUISITION OF SECURITIES In accordance with section 122(3)(b) of the Companies Act, No. 71 of 2008, as amended (“Companies Act”), and paragraph 3.83(b) of the JSE Limited Listings Requirements, shareholders are hereby advised that the Company has received formal notification in the prescribed form from Credit Suisse Group AG, advising that it has acquired a beneficial interest in securities of the Company, such that the total of all beneficial interests held by it amounts to 5.38% of the Company’s total issued ordinary share capital. The requisite notice in terms of section 122(3)(a) of the Companies Act has been filed with the Takeover Regulation Panel. The board of the Company accepts responsibility for the information contained in this announcement and confirms that, to the best of its knowledge and belief, such information accurately reflects the information contained in the TRP 121.1 form received by the Company from Credit Suisse Group AG. The announcement does not omit anything likely to affect the importance of the information contained in the announcement. Johannesburg 1 June 2023 Sponsor PSG Capital