Harry Shuman - Nov 25, 2025 Form 4 Insider Report for Merus N.V. (MRUS)

Role
VP Controller, PAO
Signature
/s/ Peter Silverman as attorney-in-fact
Stock symbol
MRUS
Transactions as of
Nov 25, 2025
Transactions value $
-$796,136
Form type
4
Date filed
11/28/2025, 04:05 PM
Previous filing
Mar 25, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Shuman Harry VP Controller, PAO C/O MERUS N.V., UPPSALALAAN 17, UTRECHT, NETHERLANDS /s/ Peter Silverman as attorney-in-fact 2025-11-28 0001791115

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MRUS Common Shares Options Exercise +800 +7.27% 11.8K Nov 25, 2025 Direct F1
transaction MRUS Common Shares Options Exercise +1K +8.47% 12.8K Nov 25, 2025 Direct F2
transaction MRUS Common Shares Options Exercise +1.8K +14.06% 14.6K Nov 25, 2025 Direct F3
transaction MRUS Common Shares Options Exercise +2.2K +15.07% 16.8K Nov 25, 2025 Direct F4
transaction MRUS Common Shares Options Exercise +1.5K +8.93% 18.3K Nov 25, 2025 Direct F5
transaction MRUS Common Shares Options Exercise +1K +5.46% 19.3K Nov 25, 2025 Direct F6
transaction MRUS Common Shares Sale -$796K -8.3K -43% $95.92 11K Nov 25, 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MRUS Share Option (right to buy) Options Exercise $0 -800 -8.7% $0.00 8.4K Nov 25, 2025 Common Shares 800 $18.61 Direct F1, F7
transaction MRUS Share Option (right to buy) Options Exercise $0 -1K -5.88% $0.00 16K Nov 25, 2025 Common Shares 1K $24.61 Direct F2, F8
transaction MRUS Share Option (right to buy) Options Exercise $0 -1.8K -27.69% $0.00 4.7K Nov 25, 2025 Common Shares 1.8K $13.23 Direct F3, F9
transaction MRUS Share Option (right to buy) Options Exercise $0 -2.2K -14.19% $0.00 13.3K Nov 25, 2025 Common Shares 2.2K $24.43 Direct F4, F10
transaction MRUS Share Option (right to buy) Options Exercise $0 -1.5K -23.08% $0.00 5K Nov 25, 2025 Common Shares 1.5K $20.15 Direct F5, F11
transaction MRUS Share Option (right to buy) Options Exercise $0 -1K -6.45% $0.00 14.5K Nov 25, 2025 Common Shares 1K $16.07 Direct F6, F12
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents the exercise price of the options originally granted on February 14, 2020.
F2 Represents the exercise price of the options originally granted on January 31, 2022.
F3 Represents the exercise price of the options originally granted on June 6, 2019.
F4 Represents the exercise price of the options originally granted on February 16, 2021.
F5 Represents the exercise price of the options originally granted on June 2, 2021.
F6 Represents the exercise price of the options originally granted on February 2, 2023.
F7 Options vest over a four-year period from January 1, 2020. 25% vest on January 1, 2021 and in 36 equal monthly installments thereafter.
F8 Options vest over a four-year period from January 1, 2022. 25% vest on January 1, 2023 and in 36 equal monthly installments thereafter.
F9 Options vest over a four-year period from April 22, 2019. 25% vest on April 22, 2020 and in 36 equal monthly installments thereafter.
F10 Options vest over a four-year period from January 1, 2021. 25% vest on January 1, 2022 and in 36 equal monthly installments thereafter.
F11 Options vest over a four-year period commencing May 28, 2021. 25% vest after one year and in 36 equal monthly installments thereafter.
F12 Options vest over a four-year period from January 1, 2023. 25% vest on January 1, 2024 and in 36 equal monthly installments thereafter.