Merck Corporate jet tracker

Merck & Co. (US/Canada) — pharma giant; oncology blockbuster Keytruda. CEO Robert Davis. Rahway NJ HQ.

Two Gulfstream G650ERs are tracked here: N822MK (2021, MSN via FAA, hex AB3966) and N800MK (2019, hex AAE2FA). Both sit in the contiguous 'MK' N-number block Merck reserves, and both carry a withheld registered owner under the FAA privacy provision — the registry returns the airframe and the Mode S hex but a blank name. The tie to Merck is the block itself: three 2023 Airbus H160-B helicopters in the same series — N833MK, N844MK and N855MK — are registered in plain sight to Merck Sharp & Dohme LLC at West Trenton/Ewing NJ, the flight-department address beside Trenton-Mercer. N800MK has been observed flying in company with N822MK, which is how the second 650 surfaced.

Two further G650ERs in the same block are candidates but are NOT tracked here yet: N811MK (2021, hex AB0E30, owner likewise withheld) and N700MK (2018, hex A955AB, held by Wilmington Trust Co as trustee). They are listed for the record rather than polled, because neither has been observed operating with the confirmed pair.