United States securities and exchange commission logo May 10, 2024 Gregory Perry Chief Financial Officer Merus N.V. Uppsalalaan 17 3584 CT Utrecht The Netherlands Re: Merus N.V. Form 10-K for Fiscal Year Ended December 31, 2023 File No. 001-37773 Dear Gregory Perry: We have completed our review of your filings. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Life Sciences