Okay, so, BeyondATX LLC as discussed is the entity that owns the 2008 F900 with Tail No. N512KS. It is the only Austin-based F900 in the Jet Linx fleet, and its FAA-registered address ties to the Austin office of Jackson Walker. That tail number is also blocked on FlightAware, so it very well could be the one we have been tracking.
One of the LLC's managers (equivalent of a director of a corporation) is Erin Tuggle, Partner at JW Austin that graduated from UT Law. The other manager of BeyondATX LLC is Matt Davis. Per Lexis, the registered address for both managers is PO Box 1465 Austin, TX 78767. An extensive Google'ing of that address will bring up a number of business entities tied to that address, including this one, this one and this one - there are also others.
You'll note that Kendra Scott holds an officer or other management position with each of those entities, and that Matt Davis is a manager of the first one I linked above (Gray Street Real Estate LLC). Connection between the two is that Matt Davis is Kendra Scott's ex-husband.
On a less interesting note, BeyondATX LLC also has connections to Eric W. Wenzel of California, though it seems like at least some of those connections are in the past (records show he was previously an officer; unclear whether he still holds an equity stake in the entity). Anyways, Wenzel doesn't appear to have any UT connections, though he is a Pittsburgh alumnus. His family also appears to have quite a bit of wealth (involved in retirement plan investment management, real estate, banking, etc.).
Erin Tuggle and Matt Davis (Kendra's ex) are obviously involved in management of the LLC and its assets, and my best guess is that Kendra Scott, members of the Wenzel family and surely a number of other individuals are direct or indirect investors/owners of the entity.