Item 5.05 Amendments to the Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics.

On November 4, 2021, GCP Applied Technologies Inc. (the "Company") adopted a new Code of Conduct (the "Code"). The Code applies to the Company's directors, executive officers and employees. The Code is designed to deter wrongdoing and to promote: (1) honest and ethical conduct; (2) full, fair, accurate, timely, and understandable disclosures; (3) compliance with applicable governmental laws, rules and regulations; (4) the prompt internal reporting of violations of the Code to an appropriate person or persons; and (5) accountability for adherence to the Code.

The foregoing description of the Code does not purport to be complete and is qualified in its entirety by reference to the full text, a copy of which is available on the Company's investor relations website at

https:// investor.gcpat.com/corporate-governance/governance-documen t s . Information on the Company's website shall not be deemed incorporated by reference into, or to be a part of, this Current Report on Form 8-K.

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