Exhibit 1

AGREEMENT

JOINT FILING OF SCHEDULE 13D

The undersigned hereby agree to jointly prepare and file with regulatory authorities this Schedule 13D and any future amendments thereto reporting each of the undersigned’s ownership of securities of W.R. Grace & Co., and hereby affirm that such Schedule 13D is being filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the other, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

Date: September 22, 2021	40 NORTH MANAGEMENT LLC

	By:
		/s/ David S. Winter
		David S. Winter
		Principal

	By:
		/s/ David J. Millstone
		David J. Millstone
		Principal

Date: September 22, 2021	40 NORTH LATITUDE FUND LP

	By 40 North GP III LLC, its General Partner

	By:
		/s/ David S. Winter
		David S. Winter
		Principal

	By:
		/s/ David J. Millstone
		David J. Millstone
		Principal

Date: September 22, 2021	40 NORTH LATITUDE MASTER FUND LTD.

	By:
		/s/ David S. Winter
		David S. Winter
		Director

	By:
		/s/ David J. Millstone
		David J. Millstone
		Director

Date: September 22, 2021	40 NORTH GP III LLC

	By:
		/s/ David S. Winter
		David S. Winter
		Principal

	By:
		/s/ David J. Millstone
		David J. Millstone
		Principal

Date: September 22, 2021	DAVID S. WINTER

	By:
		/s/ David S. Winter

Date: September 22, 2021	DAVID J. MILLSTONE

	By:
		/s/ David J. Millstone

W R GRACE & CO SC 13D/A