Koch Companies Defined Benefit Master Trust SC 13G Kayne Anderson BDC / Koch Companies Defined Benefit Master Trust ownership change

EXHIBIT 99.1

JOINT FILING AGREEMENT

This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the Common Stock, par value $0.001 per share, of Kayne Anderson BDC, Inc. (this “Agreement”), is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below that is named as a reporting person in such filing in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

Dated: January 7, 2022
	Koch Companies Defined Benefit Master Trust
	By:	Koch Industries, Inc.
		Its Sponsor
	By:	/s/ Randall A. Bushman
	Name:	Randall A. Bushman
	Title:	Vice President – Pension Management
	Koch Industries, Inc.
	By:	/s/ Raffaele G. Fazio
	Name:	Raffaele G. Fazio
	Title:	Assistant Secretary