Koch Companies Defined Benefit Master Trust SC 13G/A 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/A filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the shares of 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: August 13, 2024	Koch Companies Defined Benefit Master Trust
	By:	Koch Companies LLC, its Sponsor
	By:	/s/ Randall A. Buschman
	Name:	Randall A. Buschman
	Title:	Vice President – Pension and Investments
	Koch, Inc.
	By:	/s/ Raffaele G. Fazio
	Name:	Raffaele G. Fazio
	Title:	Assistant Secretary
	Koch Industries, LLC
	By:	/s/ Michael F. Zundel
	Name:	Michael F. Zundel
	Title:	Assistant Secretary