Thomas Pfisterer - 15 May 2025 Form 4 Insider Report for ADC Therapeutics SA (ADCT)

Role: Other*
Signature: /s/ Thomas Pfisterer
Issuer symbol: ADCT
Transactions as of: 15 May 2025
Net transactions value: $0
Form type: 4
Filing time: 19 May 2025, 15:35:33 UTC
Previous filing: 18 Jun 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Pfisterer Thomas	Other*	SUURSTOFFI 13A, ROTKREUZ, SWITZERLAND	/s/ Thomas Pfisterer	15 May 2025	0001824238

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ADCT	Common Shares	Other		-451,856	-72%		173,899	15 May 2025	Direct	F1

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

Explanation of Responses:

Id	Content
F1	In addition to the 173,899 shares still owned by Thomas Pfisterer, he previously held 451,856 shares directly or indirectly via HPWH MH AG ("MH") and HPWH TH AG ("HPWH") but following stepping down from the Board of Directors of MH and HPWH transferred ownership by way of an intragroup sale to Dr. Hans-Peter Wild.