Company: GNMSF
Filing Date: 2025-09-29
Form Type: SC TO-C
Source: 0000947871-25-000868
Chunk: 0

Company: GENMAB A/S
Filing Date: 2025-09-29
Form: SC TO-C
Chunk 0
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<div align='center'>SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

SCHEDULE TO

Tender Offer Statement Under Section 14(d)(1) or 13(e)(1)
of the Securities Exchange Act of 1934

Merus N.V.

(Name of Subject Company)

Genmab Holding II B.V.

and

Genmab A/S

(Name of Filing Persons (Offerors))

Common Share, nominal value €0.09 per share

(Title of Class of Securities)

N5749R100(CUSIP Number of Class of Securities)

Greg Mueller
Carl Jacobsens Vej 30

2500 Valby

Denmark

+45 70 20 27 28

(Name, Address and Telephone Number of Person Authorized
to Receive Notices and Communications on Behalf of Filing Persons)

Copy to:

Clare O’Brien

Derrick Lott
Harald Halbhuber

Allen Overy Shearman Sterling US LLP

599 Lexington Avenue

New York, NY 10022

Telephone: +1 (212) 848-4000

Calculation of Filing Fee</div>

| Transaction Valuation | Amount of Filing Fee |
| N/A                   | N/A                  |

| ☐ | Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting         
 fee was previously paid. Identify the previous filing by registration statement number, or the Form or Schedule and date of its filing. |

| Amount Previously Paid:  N/A   | Filing Party:  N/A |
| Form or Registration No.:  N/A | Date Filed:  N/A   |

| ☒ | Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer. |

Check the appropriate boxes below
to designate any transactions to which the statement relates:

| ☒ | third-party tender offer subject to Rule 14d-1. |

| ☐ | issuer tender offer subject to Rule 13e-4. |

| ☐ | going-private transaction subject to Rule 13e-3. |

| ☐ | amendment to Schedule 13D under Rule 13d-2. |

Check the following box if the filing
is a final amendment reporting the results of the tender offer: ☐

<div align='center'>SCHEDULE TO</div>

The pre-commencement communications filed