The disclosure of the MIRA bid was made to the ASX on Monday after the Australian Financial Review reported that an offer from MIRA was on the telco's table.
In the ASX statement, Vocus said the proposal was subject to MIRA securing debt financing, unanimous recommendation by the Vocus board, and entry into a mutually acceptable scheme implementation agreement.
Vocus has been the target of a number of takeover proposals over the last few years.
But the big energy company pulled out later the same month when the terms of due diligence could not be agreed. However, an offer was made on 11 June for all the shares in the company, at $4.85 a share, meaning that the total bid would come to a shade over $3 billion.
On 17 June, the day AGL formally dropped its bid, its managing director and chief executive Brett Redman, said, in part: "The approach to Vocus reflected our view that the Vocus asset base has attributes that could support the execution of this strategy and benefit our customers.
“However, we are no longer confident that an acquisition of Vocus at the proposed terms would represent sufficient certainty of creating value for AGL shareholders.”
In June 2019, Swedish equity firm EQT Infrastructure pulled out of a bid for Vocus that valued the company at $3.3 billion or $5.25 a share.
In June 2017, a report said TPG Capital could team up with Vocus founder James Spenceley to examine a takeover in the event that the equity firm's bid for newspaper firm Fairfax Media, now no more after being bought by Nine Entertainment, did not come off.
The same month, American equity firm Kohlberg Kravis Roberts made a bid to buy Vocus for $2.2 billion.