Ameet Mallik - 06 Dec 2025 Form 4 Insider Report for ADC Therapeutics SA (ADCT)

Role: Chief Executive Officer, Director
Signature: /s/ Lisa Kallebo, as Attorney-in-Fact for Ameet Mallik
Issuer symbol: ADCT
Transactions as of: 06 Dec 2025
Net transactions value: -$767,050
Form type: 4
Filing time: 09 Dec 2025, 17:10:09 UTC
Previous filing: 12 Jun 2025
Next filing: 18 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MALLIK AMEET	Chief Executive Officer, Director	430 MOUNTAIN AVE, SUITE 404, NEW PROVIDENCE	/s/ Lisa Kallebo, as Attorney-in-Fact for Ameet Mallik	09 Dec 2025	0001861441

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ADCT	Common Shares	Tax liability	$767,050	-233,146	-15%	$3.29	1,319,101	06 Dec 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the number of Common Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted share units previously granted.