ABUS's three largest insider shareholders as of March 23, 2026 are Sciences Ltd. Roivant (TenPercentOwner, 38.85Mn shares), Michael J. Mcelhaugh (Interim President Ceo, 1.66Mn shares), Michael J. Sofia (Chief Scientific Officer, 1.49Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Sciences Ltd. Roivant | 38,847,462 | 0 | 20 Oct, 2021 | |
| Michael J. Mcelhaugh | Interim President Ceo | 1,658,003 | 0 | 19 Feb, 2025 |
| Michael J. Sofia | Chief Scientific Officer | 1,485,121 | 0 | 05 Feb, 2024 |
| David C Hastings | Chief Financial Officer | 249,824 | 0 | 19 Feb, 2025 |
| William H. Collier | President And Ceo | 216,500 | 0 | 03 Feb, 2023 |
| Karen Sims | Chief Medical Officer | 155,494 | 0 | 19 Feb, 2025 |
| J. Christopher Naftzger | General Counsel And Cco | 140,544 | 0 | 19 Feb, 2025 |
| Elizabeth Howard | Evp, Gc, Compliance | 86,024 | 0 | 03 Feb, 2023 |
| Tuan Nguyen | Chief Financial Officer | 73,500 | 0 | 02 Feb, 2026 |
| Keith S Manchester | 46,069 | 0 | 16 Aug, 2024 | |
| Lindsay Androski | President And Ceo | 28,000 | 0 | 02 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 02 Feb, 2026 | Tuan Nguyen | Common Shares | A | 73,500 | $0.00 | 73,500 | D | A |
| 02 Feb, 2026 | Lindsay Androski | Common Shares | A | 28,000 | $0.00 | 28,000 | D | A |
| 02 Feb, 2026 | Tuan Nguyen | Stock Option (Right to Buy) | A | 188,400 | $0.00 | 188,400 | D | A |
| 02 Feb, 2026 | Lindsay Androski | Stock Option (Right to Buy) | A | 71,700 | $0.00 | 71,700 | D | A |
| 04 Aug, 2025 | Roger Sawhney | Stock Option (Right to Buy) | A | 157,600 | $0.00 | 157,600 | D | A |
| 31 Mar, 2025 | Tuan Nguyen | Stock Option (Right to Buy) | A | 750,000 | $0.00 | 750,000 | D | A |
| 31 Mar, 2025 | Tuan Nguyen | Stock Option (Right to Buy) | A | 750,000 | $0.00 | 750,000 | D | A |
| 18 Mar, 2025 | Robert A Beardsley | Stock Option (Right to Buy) | A | 157,600 | $0.00 | 157,600 | D | A |
| 18 Mar, 2025 | Lindsay Androski | Stock Option (Right to Buy) | A | 310,422 | $0.00 | 310,422 | D | A |
| 18 Mar, 2025 | Anuj Hasija | Stock Option (Right to Buy) | A | 157,600 | $0.00 | 157,600 | D | A |
| 14 Feb, 2025 | Michael J. Mcelhaugh | Common Shares | A | 177,000 | $0.00 | 1,658,003 | D | A |
| 14 Feb, 2025 | J. Christopher Naftzger | Common Shares | A | 54,300 | $0.00 | 140,544 | D | A |
| 14 Feb, 2025 | David C Hastings | Common Shares | A | 90,100 | $0.00 | 249,824 | D | A |
| 14 Feb, 2025 | Karen Sims | Common Shares | A | 49,300 | $0.00 | 155,494 | D | A |
| 14 Feb, 2025 | Michael J. Mcelhaugh | Stock Option (Right to Buy) | A | 718,800 | $0.00 | 718,800 | D | A |
| 14 Feb, 2025 | J. Christopher Naftzger | Stock Option (Right to Buy) | A | 220,300 | $0.00 | 220,300 | D | A |
| 14 Feb, 2025 | Karen Sims | Stock Option (Right to Buy) | A | 200,300 | $0.00 | 200,300 | D | A |
| 14 Feb, 2025 | David C Hastings | Stock Option (Right to Buy) | A | 365,800 | $0.00 | 365,800 | D | A |
| 04 Feb, 2025 | David C Hastings | Common Shares | D | 22,183 | $3.28 | 159,724 | D | S |
| 04 Feb, 2025 | Michael J. Mcelhaugh | Common Shares | D | 23,790 | $3.28 | 1,481,003 | D | S |