The activity with OXYS makes me wonder whether Sigma's research and development phase is expanding and the commercial phase is being pushed farther to the future. Both companies have smart people and good connections, but it does sound like a couple of start-ups cooperating with each other.
By the way, it will be interesting to know whether OXYS uses any of IPO proceeds to buy shares of SGLB, or whether SGLB uses some of its newly generated funding to buy part of OXYS. (I am assuming that the shell company Gotham Capital will change name to OXYS--If I remember right, SGLB went public by converting shares of a shell from a defunct oil and gas company, but that was before I was an investor in it)
The plot thickens.