SEC FORM 3/A SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
Squarer Ron
(Last) (First) (Middle)
430 MOUNTAIN AVENUE
SUITE 404
(Street)
NEW PROVIDENCE NJ 07974
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
01/02/2024 		3. Issuer Name and Ticker or Trading Symbol
ADC Therapeutics SA [ ADCT ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
01/02/2024
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Shares 35,806(1) D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Options (Right to Buy) (2) 04/29/2030 Common Shares 966,519 $18.75 D
Stock Options (Right to Buy) (3) 03/22/2031 Common Shares 27,412 $28.7 D
Stock Options (Right to Buy) (4) 03/07/2032 Common Shares 29,836 $14 D
Stock Options (Right to Buy) (5) 04/29/2030 Common Shares 159,026 $18.75 I By grantor retained annuity trust
Explanation of Responses:
1. On January 2, 2024, a Form 3 was filed on behalf of the Reporting Person which inadvertently overstated the number of securities reported in Column 2 of Table I by 11,852 shares due to an administrative error. This Form 3 amendment is being filed to correct the aggregate number of shares beneficially owned by the Reporting Person as of the original transaction date and also applies to the number of shares reported as beneficially owned by the Reporting Person on any Forms 4 filed since January 2, 2024.
2. On January 2, 2024, a Form 3 was filed on behalf of the Reporting Person which inadvertently underreported the number of securities reported in Column 3 of Table II by 468,977 shares due to an administrative error. This Form 3 amendment is being filed to correct the aggregate number of shares beneficially owned by the Reporting Person as of the original transaction date and also applies to the number of shares reported as beneficially owned by the Reporting Person on any Forms 4 filed since January 2, 2024.
3. On January 2, 2024, a Form 3 was filed on behalf of the Reporting Person which inadvertently overstated the number of securities reported in Column 3 of Table II by 16,447 shares due to an administrative error. These options are fully vested and exercisable. This Form 3 amendment is being filed to correct the aggregate number of shares beneficially owned by the Reporting Person as of the original transaction date and also applies to the number of shares reported as beneficially owned by the Reporting Person on any Forms 4 filed since January 2, 2024.
4. On January 2, 2024, a Form 3 was filed on behalf of the Reporting Person which inadvertently overstated the number of securities reported in Column 3 of Table II by 45,539 shares due to an administrative error. These options are fully vested and exercisable. This Form 3 amendment is being filed to correct the aggregate number of shares beneficially owned by the Reporting Person as of the original transaction date and also applies to the number of shares reported as beneficially owned by the Reporting Person on any Forms 4 filed since January 2, 2024.
5. Due to an administrative error, the previous Form 3 filing inadvertently overstated the number of options contributed to a grantor annuity trust for the benefit of the Ron Squarer 2014 Irrevocable Life Insurance Trust by 309,951 options. The correct number of options contributed to the grantor annuity trust for the benefit of the Ron Squarer 2014 Irrevocable Life Insurance Trust is reflected in this filing.
/s/ Ameet Mallik, as Attorney-in-Fact for Ron Squarer 06/05/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.