No this is done because there is a rule against self...

No this is done because there is a rule against self acquisition. IOOF is a wealth manager and also a listed stock. A listed company can't just run around and buy its own stock whenever it wants. As a wealth manager for superannuation funds and managed funds, there is a special exemption that allows them to buy their own stock, if that stock is for the investors in their funds. There's a lot of other rules around how they do it as well. You'll see similar disclosures for other listed asset managers (NAB used to own MLC and so they had to use the exemption and disclose too).