Osiris Acquisition Corp - Ordinary Shares (OSI) SC 13G Osiris Acquisition / Jefferies Financial ownership change

EXHIBIT 1

JOINT FILING AGREEMENT

This will confirm the agreement by and among all the undersigned that the Schedule 13G filed on or about this date and any amendments thereto with respect to the beneficial ownership by the undersigned of shares of Class A Common Stock, $0.0001 par value per share, of Osiris Acquisition Corp. is being filed on behalf of each of the undersigned in accordance with Rule 13d-1(k)(1).  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:  May 27, 2021

JEFFERIES FINANCIAL GROUP INC.
By:	/s/ Michael J. Sharp
	Name: Michael J. Sharp
	Title:  Executive Vice President and General Counsel

JEFFERIES GROUP LLC
By:	/s/ Michael J. Sharp
	Name:  Michael J. Sharp
	Title:  Executive Vice President, General Counsel and Secretary