Exhibit 99.40

Joint Filing Agreement

In accordance with Rule 13d-1(k) promulgated under the U.S. Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a Statement on Schedule 13D (including amendments thereto) with respect to the Common Stock, nominal value EUR0.01 per share, of Aercap Holdings N.V., a Dutch corporation, and that this Joint Filing Agreement may be included as an Exhibit to such joint filing. This Joint Filing Agreement may be executed in any number of counterparts, all of which together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of August 20, 2019.