Exhibit 99.4

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the ordinary shares, par value $0.01 per share, of Iterum Therapeutics plc, a public limited company formed under the laws of Ireland, and further agree that this Joint Filing Agreement be included as an exhibit to such joint filings.

In evidence thereof, each of the undersigned hereby executes this Joint Filing Agreement as of January 27, 2020.

ARIX BIOSCIENCE PLC
By:	/s/ Marcus Karia
Name:	Marcus Karia
Title:	Group Finance Director
ARIX BIOSCIENCE HOLDINGS LTD.
By:	/s/ Marcus Karia
Name:	Marcus Karia
Title:	Group Finance Director
/s/ Mark Chin
Mark Chin