Chandler up to 19.8%

[Stavros]

I think at that point he has to file a statement of his intentions.

Richard Chandler et al filed the Schedule 13G/A to indicate his total holdings in InterOil.

FROM INVESTOPEDIA:

Investopedia explains 'Schedule 13G'

To be able to file a 13G instead of a 13D, the party must own between 5% and 20% in the company. It must also be clearly understood that the party acquiring the stake in the company is only a passive investor, and does not intend to exert control. If these criteria are not met, and if the size in the stake exceeds 20%, a 13D must be filed.

It seems to me that once 20% is breeched, Chandler would have to file the 13D and reveal some confidential information that he may not wish to divulge:

http://www.law.cornell.edu/cfr/text/17/240.13d-101