I wouldn't be to concerned, as you said it is very similar to when Santos bought in. Volumes are very low so not many selling (or buying for that matter), but the fact that people are holding them tightly is fairly reassuring to me.
What I find most interesting is ESG continually spruiking that they are examing LNG opportunities. I remember when QGC and Sunshine announced their LNG plants and the shareprice took off!