I am in a similar position - I hold WES (long Term) and API (re-purchased in Apr 2020). I have been re-considering the SIG bid. I now doubt that this is a serious bid (being so minimal above the WES bid). It seems, IMO, that the main aim is accumulate enough shares to block the WES TO.
I will continue to hold API and monitor the proceedings.
Regards
Old Fisherman
API Price at posting:
$1.51 Sentiment: Hold Disclosure: Held