I think it could be a replay of Dec 2017's raise.....
If you recall in December 2017 they raised something like 12.5 million...the pps dipped for a time before the pump resumed taking the PPS to 11+ for another raise of 30 million.
I don't think 20 million would even last a year, and I suspect their burn is going up....but to do another raise they either have to get the PPS up over $5 or wait 90 days. My suspicion is that they'd be best served to dilute before reporting 2nd qtr results.