Tower is in dispute with EQC over a portion of $66.6m of Canterbury quake claims and has filed a statement of claim against the Crown entity. It is also in a commercial dispute with its reinsurer Peak Re over its 2015 adverse development cover agreement, which will go to arbitration in the second half of this year.
The insurer is weighing up overtures from two suitors, with the Commerce Commission set to rule at the end of June on whether rival Suncorp Group can go ahead with a planned takeover, which would trump an earlier bid from Canada's Fairfax Financial Holdings.
Harding said the company's board was working with Fairfax Financial on the timing for a vote unless a formal offer is made by Suncorp, but that it would be after June 30, when the commission is scheduled to rule.
The shares last traded at $1.125, below the $1.17 per share offer from Fairfax Financial and the $1.30 that Suncorp paid some shareholders to build a 19.99 per cent stake.
This month Tower drew down $30m of a $50m facility with Bank of New Zealand to prop up its solvency margin, lifting it to $37.4m above the minimum requirement of its licence as at May 31, or a 255 per cent solvency ratio.
The company's operating cash outflow widened to $23.3m in the half from $19.8m a year earlier, and after financing and investing activities, it was left with cash and equivalents of $70.1m at March 31, compared with $94.7m a year earlier.
Also weighing on the bottom line was a $7.2m expense for the Kaikoura earthquake and a $3.6m hit from the Tasman Tempest storms and Port Hills fires.
The board continued to suspend dividend payments.