ADCT · ADC Therapeutics SA

Represents an award of restricted stock units ("RSUs") granted on June 30, 2026 pursuant to an incentive award letter agreement. The RSUs will vest upon the earlier of (i) June 30, 2027 or (ii) termination of employment by the Issuer without cause or by the reporting person for good reason, subject to the reporting person's continued employment with the Issuer on the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents an award of restricted stock units ("RSUs") granted on June 30, 2026 pursuant to an incentive award letter agreement. The RSUs will vest upon the earlier of (i) June 30, 2027 or (ii) termination of employment by the Issuer without cause or by the reporting person for good reason, subject to the reporting person's continued employment with the Issuer on the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents an award of restricted stock units ("RSUs") granted on June 30, 2026 pursuant to an incentive award letter agreement. The RSUs will vest upon the earlier of (i) June 30, 2027 or (ii) termination of employment by the Issuer without cause or by the reporting person for good reason, subject to the reporting person's continued employment with the Issuer on the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents an award of restricted stock units ("RSUs") granted on June 30, 2026 pursuant to an incentive award letter agreement. The RSUs will vest upon the earlier of (i) June 30, 2027 or (ii) termination of employment by the Issuer without cause or by the reporting person for good reason, subject to the reporting person's continued employment with the Issuer on the vesting date. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

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.

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.

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.

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.

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.

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.

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.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest on the earlier of (i) one year from the grant date or (ii) the date of the 2027 Annual Meeting of Shareholders, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest on the earlier of (i) one year from the grant date or (ii) the date of the 2027 Annual Meeting of Shareholders, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest on the earlier of (i) one year from the grant date or (ii) the date of the 2027 Annual Meeting of Shareholders, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest on the earlier of (i) one year from the grant date or (ii) the date of the 2027 Annual Meeting of Shareholders, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest on the earlier of (i) one year from the grant date or (ii) the date of the 2027 Annual Meeting of Shareholders, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest on the earlier of (i) one year from the grant date or (ii) the date of the 2027 Annual Meeting of Shareholders, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest on the earlier of (i) one year from the grant date or (ii) the date of the 2027 Annual Meeting of Shareholders, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.25 to $3.77, inclusive. The Reporting Persons undertake to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased at each separate price.

These securities are directly owned by RedCo II Master Fund, L.P.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.25 to $3.77, inclusive. The Reporting Persons undertake to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased at each separate price.

These securities are directly owned by certain private investment vehicles managed by Redmile Group, LLC ("Redmile"), including RedCo II Master Fund, L.P., and may be deemed beneficially owned by Redmile as investment manager of such private investment vehicles. The reported securities may also be deemed beneficially owned by Jeremy Green as the principal of Redmile. The Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Persons are the beneficial owners of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.70 to $3.83, inclusive. The Reporting Persons undertake to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased at each separate price.

These securities are directly owned by RedCo II Master Fund, L.P.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.70 to $3.83, inclusive. The Reporting Persons undertake to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased at each separate price.

These securities are directly owned by certain private investment vehicles managed by Redmile Group, LLC ("Redmile"), including RedCo II Master Fund, L.P., and may be deemed beneficially owned by Redmile as investment manager of such private investment vehicles. The reported securities may also be deemed beneficially owned by Jeremy Green as the principal of Redmile. The Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Persons are the beneficial owners of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.63 to $3.81, inclusive. The Reporting Persons undertake to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased at each separate price.

These securities are directly owned by RedCo II Master Fund, L.P.

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.63 to $3.81, inclusive. The Reporting Persons undertake to provide upon request by the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer full information regarding the number of shares purchased at each separate price.

These securities are directly owned by certain private investment vehicles managed by Redmile Group, LLC ("Redmile"), including RedCo II Master Fund, L.P., and may be deemed beneficially owned by Redmile as investment manager of such private investment vehicles. The reported securities may also be deemed beneficially owned by Jeremy Green as the principal of Redmile. The Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Persons are the beneficial owners of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose.

Represents Common Shares to be delivered in settlement of a restricted share unit award which vests one-third on the first anniversary of the grant date, which grant date is February 13, 2026, and then one-third on each anniversary date thereafter, upon continued service through the designated vesting event.

Represents Common Shares to be delivered in settlement of a restricted share unit award which vests one-third on the first anniversary of the grant date, which grant date is February 13, 2026, and then one-third on each anniversary date thereafter, upon continued service through the designated vesting event.

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.

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.

Represents Common Shares to be delivered in settlement of a restricted share unit award which vests one-third on the first anniversary of the grant date, which grant date is February 13, 2026, and then one-third on each anniversary date thereafter, upon continued service through the designated vesting event.

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.

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.

Represents Common Shares to be delivered in settlement of a restricted share unit award which vests one-third on the first anniversary of the grant date, which grant date is February 13, 2026, and then one-third on each anniversary date thereafter, upon continued service through the designated vesting event.

Balance reflects the prior transfer of 669,101 Common Shares from the Reporting Person to a grantor retained annuity trust, which transfer is exempt from Section 16(b) pursuant to Rule 16a-13. The Reporting Person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

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.

Represents Common Shares to be delivered in settlement of a restricted share unit award which vests one-third on the first anniversary of the grant date, which grant date is February 13, 2026, and then one-third on each anniversary date thereafter, upon continued service through the designated vesting event.

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.

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.

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.

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.

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.

The exercise price of the Pre-Funded Warrants is CHF 0.08 per Pre-Funded Warrant Share. Based on the October 12, 2025 exchange rate of approximately $1.25 to CHF 1.00, the exercise price of the Pre-Funded Warrants in US Dollars as of October 12, 2025 was approximately $0.10.

RedCo II Master Fund, L.P. ("RedCo II") acquired the reported pre-funded warrants to purchase Common Shares (the "Pre-Funded Warrants") in a private placement by the Issuer pursuant to the terms of a securities purchase agreement, dated October 12, 2025 (the "Purchase Agreement"), by and among the Issuer and RedCo II. The purchase price per Pre-Funded Warrants is $3.90, which is the price per Common Share in the private placement minus the exercise price per Pre-Funded Warrant. The closing of the private placement occurred on October 27, 2025 following the satisfaction of the closing conditions.

The Pre-Funded Warrants are exercisable by the holder at any time on or after the closing date of the private placement until the tenth anniversary of such closing date, subject to a 9.99% beneficial ownership blocker. At any time during the last 90 days of the term of the Pre-Funded Warrants, the holder thereof may exchange a Pre-Funded Warrant with the Issuer for a new Pre-Funded Warrant to purchase the number of Pre-Funded Warrant Shares then remaining under such Pre-Funded Warrant, with a subsequent ten-year exercise period.

These reported securities are directly owned by RedCo II. Redmile Group, LLC ("Redmile") may be deemed to beneficially own the reported securities as the investment manager of RedCo II. The reported securities may also be deemed beneficially owned by Jeremy Green as the principal of Redmile. Redmile and Mr. Green disclaim beneficial ownership of the reported securities except to the extent of its and his respective pecuniary interest therein, if any. This report shall not be deemed an admission that Redmile or Mr. Green is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

The exercise price of the Pre-Funded Warrants is CHF 0.08 per Pre-Funded Warrant Share. Based on the October 12, 2025 exchange rate of approximately $1.25 to CHF 1.00, the exercise price of the Pre-Funded Warrants in US Dollars as of October 12, 2025 was approximately $0.10.

RedCo II Master Fund, L.P. ("RedCo II") acquired the reported pre-funded warrants to purchase Common Shares (the "Pre-Funded Warrants") in a private placement by the Issuer pursuant to the terms of a securities purchase agreement, dated October 12, 2025 (the "Purchase Agreement"), by and among the Issuer and RedCo II. The purchase price per Pre-Funded Warrants is $3.90, which is the price per Common Share in the private placement minus the exercise price per Pre-Funded Warrant. The closing of the private placement occurred on October 27, 2025 following the satisfaction of the closing conditions.

The Pre-Funded Warrants are exercisable by the holder at any time on or after the closing date of the private placement until the tenth anniversary of such closing date, subject to a 9.99% beneficial ownership blocker. At any time during the last 90 days of the term of the Pre-Funded Warrants, the holder thereof may exchange a Pre-Funded Warrant with the Issuer for a new Pre-Funded Warrant to purchase the number of Pre-Funded Warrant Shares then remaining under such Pre-Funded Warrant, with a subsequent ten-year exercise period.

These reported securities are directly owned by RedCo II and this transaction is a repetition of the same transaction disclosed in the row above to disclose this fund's direct ownership.

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.

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.

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.

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.

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.

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.

The exercise price of the Pre-Funded Warrants is CHF 0.08 per Pre-Funded Warrant Share. Based on the June 11, 2025 exchange rate of approximately US$1.219 to CHF 1.00, the exercise price of the Pre-Funded Warrants in US Dollars as of June 11, 2025 was approximately $0.098.

On June 11, 2025, certain private investment vehicles managed by Redmile Group, LLC (collectively, the "Redmile Clients"), including RedCo II Master Fund, L.P. ("RedCo II"), entered into a securities purchase agreement (the "Purchase Agreement") in connection with a private placement by the Issuer to certain institutional investors. Pursuant to the terms of the Purchase Agreement, the Redmile Clients will acquire 15,734,267 pre-funded warrants to purchase Common Shares (the "Pre-Funded Warrants") as of the closing date on June 16, 2025. The purchase price per Pre-Funded Warrant, excluding the exercise price (see footnote 2 below), is $3.432.

The Pre-Funded Warrants are exercisable by the holder at any time on or after the closing date of the private placement until the tenth anniversary of such closing date, subject to a 9.99% beneficial ownership blocker. At any time during the last 90 days of the term of the Pre-Funded Warrants, the holder thereof may exchange a Pre-Funded Warrant with the Issuer for a new Pre-Funded Warrant to purchase the number of Pre-Funded Warrant Shares then remaining under such Pre-Funded Warrant, with a subsequent ten-year exercise period.

Redmile Group, LLC ("Redmile") may be deemed to beneficially own the reported securities as the investment manager of the Redmile Clients. The reported securities may also be deemed beneficially owned by Jeremy Green as the principal of Redmile. Redmile and Mr. Green disclaim beneficial ownership of the reported securities except to the extent of its and his respective pecuniary interest therein, if any. This report shall not be deemed an admission that Redmile or Mr. Green is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

These reported securities are directly owned by RedCo II and this transaction is a repetition of the same transaction disclosed in the row above to disclose this fund's direct ownership.

The exercise price of the Pre-Funded Warrants is CHF 0.08 per Pre-Funded Warrant Share. Based on the June 11, 2025 exchange rate of approximately US$1.219 to CHF 1.00, the exercise price of the Pre-Funded Warrants in US Dollars as of June 11, 2025 was approximately $0.098.

On June 11, 2025, certain private investment vehicles managed by Redmile Group, LLC (collectively, the "Redmile Clients"), including RedCo II Master Fund, L.P. ("RedCo II"), entered into a securities purchase agreement (the "Purchase Agreement") in connection with a private placement by the Issuer to certain institutional investors. Pursuant to the terms of the Purchase Agreement, the Redmile Clients will acquire 15,734,267 pre-funded warrants to purchase Common Shares (the "Pre-Funded Warrants") as of the closing date on June 16, 2025. The purchase price per Pre-Funded Warrant, excluding the exercise price (see footnote 2 below), is $3.432.

The Pre-Funded Warrants are exercisable by the holder at any time on or after the closing date of the private placement until the tenth anniversary of such closing date, subject to a 9.99% beneficial ownership blocker. At any time during the last 90 days of the term of the Pre-Funded Warrants, the holder thereof may exchange a Pre-Funded Warrant with the Issuer for a new Pre-Funded Warrant to purchase the number of Pre-Funded Warrant Shares then remaining under such Pre-Funded Warrant, with a subsequent ten-year exercise period.

These reported securities are directly owned by the Redmile Clients, including RedCo II.

Redmile Group, LLC ("Redmile") may be deemed to beneficially own the reported securities as the investment manager of the Redmile Clients. The reported securities may also be deemed beneficially owned by Jeremy Green as the principal of Redmile. Redmile and Mr. Green disclaim beneficial ownership of the reported securities except to the extent of its and his respective pecuniary interest therein, if any. This report shall not be deemed an admission that Redmile or Mr. Green is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Represents the annual grant of restricted stock units ("RSUs") made under the Issuer's 2019 Equity Incentive Plan for service as a Director. The RSUs vest one year from the grant date, subject to the Reporting Person's continued service to the Issuer. Each RSU represents a contingent right to receive one share of the Issuer's common stock.