The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Stemme GMBH

Named as the FAA publishes it on its approvals.

Holds 3 type certificates (6 models). FAA spelling: Stemme GmbH.

Type certificates 3

G58EUAircraft · Stemme S10, Stemme S10-V
G06CEAircraft · Stemme S 10-VT, Stemme S 12
G23CEAircraft · S6-RT, S6

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.