Peter Maccallum established Maccallum & Associates cc in May 1993. A year later he was joined by Peter Harrison forming Maccallum & Associates SA (Pty) Ltd. In early 2008 Sean Harrison joined the company, with Grant Harrison joining in late 2009. In 2013 the company name was changed to Maccallum (Pty) Ltd. Since early 2017 100% ownership has passed to Jahilda Trust, which is controlled by the Harrison family. Peter Maccallum retired in March 2017.


As a private company Maccallum (Pty) Ltd is not listed on a Stock Exchange and does not publish audited annual financial statements although these are available on request.


Rob Townshend, based in the head office in Johannesburg, looks after customers in the Highveld area, and Alexandra Kossidis in Durban the customers in KwaZulu-Natal and the Free State. From the Cape Town office Cherie Thomson tends to customers in the Western and Eastern Cape and in Namibia.


The executives have extensive sales, financial and marketing experience in the raw materials trading and distribution business.