When the Stratolaunch company was founded in 2011, the project's cost was initially estimated to be a whopping 215 million ($300 million)  but it was valued even higher in 2019, at $400 million, according to CNBC. But Stratolaunch was bought out by Cerberus Capital Management, reports in December 2019 revealed, and the company's staff count has since grown. The company was founded by the late billionaire and Microsoft Corp co-founder Paul Allen in 2011, and sold to private ownership in late 2019 after Allen's death. 'We are airborne,' the Stratolaunch company tweeted at about 7:30am local time on Thursday. We are airborne, the Stratolaunch company tweeted at about 7:30 a.m.
The company was bought at a private auction in the year after 2010.
( z0 buy :ARG1 ( z1 company ) :subevent-of ( z2 auction :ARG1-of ( z3 private ) ) :time ( z4 after :op ( z5 date-entity :year 2010 ) ) )
(z0 / buy-01
    :ARG1 (z1 / company)
    :subevent-of (z2 / auction-02
                     :ARG1-of (z3 / private-03))
    :time (z4 / after
              :op1 (z5 / date-entity
                       :year 2010)))
The company was bought at a private auction in the year after 2010 .
z0 :ARG1 z1
z2 :ARG1-of z3
z0 :subevent-of z2
z0 :time z4
z4 :op1 z5
z5 :year 0