Pilots, captains and chief stewards move between employers frequently, and they announce the moves publicly on professional networks and industry job boards. Those announcements are dated, name the previous and current employer, and precede the equivalent filing at the corporate register by weeks or months.
A reader tracking beneficial change on a jet or yacht will usually see the crew move first. The crew move is unambiguous, it is voluntarily filed, and it survives any subsequent editing of the corporate paperwork because the professional network is not under the counterparty control.
The crew profile carries the aircraft type, the yacht name, the operator, and the tenure. A captain who lists a departure from a specific hull on a specific month, and an arrival on a new hull three weeks later, has effectively dated the change of hand on the previous hull to a resolution the ownership register will not match. Cross-referenced across the wider crew of the same hull, the picture usually converges to a single week.
Crew profiles are volunteered, dated, and unedited. A monitor that reads them as background reading has a leading indicator on beneficial change; one that does not is reading a lagging one.