Documentation ephemerisx.com

Example: Private-jet signal

How Pro is designed to connect flight data, SEC filings, the press and Berkshire's letters, using the 2019 Occidental jet flight to Omaha.

Last updated September 30, 2026

The question#

Did any corporate jet flights come before Berkshire's big deals?

What it connects#

DomainRecord
Flight dataEvery leg flown by N550XY, a Gulfstream G550 the press reported as Occidental's, April 8 to May 17, 2019
SEC filingsOccidental's, Chevron's and Berkshire's filings on the Anadarko contest, April 12 to May 10, 2019
PressBloomberg and CNBC reports of the flight
Berkshire lettersWhat Buffett had written about acquisitions before the flight

The answer#

  1. The flight. On Sunday, April 28, 2019, N550XY flew from Ellington Field, Houston, to Eppley Airfield, Omaha, spent 2 hours 16 minutes on the ground, and flew back.
  2. The press. Bloomberg reported it the next day: “Occidental Jet Flew to Omaha This Weekend, Flight Data Shows.”
  3. The filing. On April 30, Berkshire committed $10 billion to Occidental's bid for Anadarko (Form 425). The signed terms (8-K, May 3) were 100,000 shares of 8% preferred stock and a warrant for 80 million shares at $62.50.
  4. What followed. Chevron declined to raise its offer (May 9); Anadarko paid Chevron's $1 billion termination fee and agreed to Occidental's deal (May 10). The $10 billion closed on August 8, 2019.

The artifacts#

  • Flight map: the Houston → Omaha legs, with times and time on the ground.
  • Sequence: flights, press and filings on one dated line.
  • Deal brief: a cited report of the above, as PDF, Word or Slides.