Over the 90-day window ending January 10, 2026, ADC Therapeutics's three dominant insider ownership positions are held by TenPercentOwner Group, Llc Redmile (28.81Mn shares), TenPercentOwner Hans Peter Wild (9.79Mn shares), Chief Executive Officer Ameet Mallik (1.32Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Group, Llc Redmile | 28,812,443 | 13 Dec, 2024 | |
| Hans Peter Wild | 9,788,944 | 15 May, 2025 | |
| Ameet Mallik | Chief Executive Officer | 1,319,101 | 09 Dec, 2025 |
| Jose Carmona | Chief Financial Officer | 488,656 | 09 Dec, 2025 |
| Mohamed Zaki | Chief Medical Officer | 421,820 | 09 Dec, 2025 |
| Peter J Graham | Chief Legal Officer | 359,034 | 09 Dec, 2025 |
| Peter Hug | 220,500 | 17 Jun, 2025 | |
| Thomas Pfisterer | 173,899 | 15 May, 2025 | |
| Viviane Monges | 144,043 | 17 Jun, 2025 | |
| Victor Sandor | 108,286 | 17 Jun, 2025 | |
| Jean-Pierre Bizzari | 106,902 | 17 Jun, 2025 | |
| Ron Squarer | 93,627 | 17 Jun, 2025 | |
| Robert Azelby | 80,405 | 17 Jun, 2025 | |
| Lisa Michelle Kallebo | Chief Accounting Officer | 70,757 | 09 Dec, 2025 |
| Timothy Coughlin | 40,000 | 05 Jun, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Dec, 2025 | Peter J Graham | Common Shares | D | 49,508 | $3.29 | 359,034 | D | F |
| 06 Dec, 2025 | Jose Carmona | Common Shares | D | 53,236 | $3.29 | 488,656 | D | F |
| 06 Dec, 2025 | Ameet Mallik | Common Shares | D | 233,146 | $3.29 | 1,319,101 | D | F |
| 06 Dec, 2025 | Mohamed Zaki | Common Shares | D | 41,068 | $3.29 | 421,820 | D | F |
| 06 Dec, 2025 | Lisa Michelle Kallebo | Common Shares | D | 7,140 | $3.29 | 70,757 | D | F |
| 13 Jun, 2025 | Ron Squarer | Common Shares | D | 15,184 | $3.58 | 93,627 | D | F |
| 13 Jun, 2025 | Victor Sandor | Common Shares | D | 12,600 | $3.58 | 108,286 | D | F |
| 13 Jun, 2025 | Jean-Pierre Bizzari | Common Shares | D | 12,600 | $3.58 | 106,902 | D | F |
| 13 Jun, 2025 | Robert Azelby | Common Shares | D | 12,600 | $3.58 | 80,405 | D | F |
| 13 Jun, 2025 | Viviane Monges | Common Shares | D | 2,584 | $3.58 | 144,043 | D | F |
| 13 Jun, 2025 | Peter Hug | Common Shares | D | 2,144 | $3.58 | 220,500 | D | F |
| 03 Jun, 2025 | Timothy Coughlin | Common Shares | A | 40,000 | $0.00 | 40,000 | D | A |
| 03 Jun, 2025 | Ron Squarer | Common Shares | A | 40,000 | $0.00 | 108,811 | D | A |
| 03 Jun, 2025 | Victor Sandor | Common Shares | A | 40,000 | $0.00 | 120,886 | D | A |
| 03 Jun, 2025 | Jean-Pierre Bizzari | Common Shares | A | 40,000 | $0.00 | 119,502 | D | A |
| 03 Jun, 2025 | Robert Azelby | - | - | 93,005 | D | |||
| 03 Jun, 2025 | Robert Azelby | Common Shares | A | 40,000 | $0.00 | 93,005 | D | A |
| 03 Jun, 2025 | Viviane Monges | Common Shares | A | 40,000 | $0.00 | 146,627 | D | A |
| 03 Jun, 2025 | Peter Hug | Common Shares | A | 40,000 | $0.00 | 222,644 | D | A |
| 15 May, 2025 | Hans Peter Wild | - | - | 9,788,944 | D |