As of April 17, 2026, the three largest insider holders of ALT are Vipin K Garg (President And Ceo, 424.52K shares), M Scot Roberts (Chief Scientific Officer, 112.82K shares), M Scot Roberts (Chief Scientific Officer, 112.82K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Vipin K Garg | President And Ceo | 424,519 | 0 | 02 Feb, 2026 |
| M Scot Roberts | Chief Scientific Officer | 112,824 | 0 | 03 Feb, 2026 |
| M Scot Roberts | Chief Scientific Officer | 112,824 | 0 | 03 Feb, 2026 |
| Raymond M Jordt | Chief Business Officer | 70,107 | 0 | 02 Feb, 2026 |
| Raymond M Jordt | Chief Business Officer | 70,107 | 0 | 02 Feb, 2026 |
| David Drutz | - | 0 | 55,524 | 20 Aug, 2024 |
| Jerome Benedict Durso | President And Ceo | 47,500 | 0 | 01 Apr, 2026 |
| Richard I Eisenstadt | Chief Financial Officer | 45,012 | 0 | 01 Feb, 2024 |
| Gregory L Weaver | Chief Financial Officer | 38,078 | 0 | 01 Apr, 2026 |
| Gregory L Weaver | Chief Financial Officer | 38,078 | 0 | 01 Apr, 2026 |
| John Gill | - | 21,700 | 0 | 06 Apr, 2026 |
| David Drutz | - | 20,151 | 0 | 21 Nov, 2022 |
| William Michael Brown | Chief Financial Officer | 17,721 | 0 | 06 Aug, 2021 |
| Matthew Scott Harris | Chief Medical Officer | 16,087 | 0 | 04 Aug, 2025 |
| Matthew Scott Harris | Chief Medical Officer | 16,087 | 0 | 04 Aug, 2025 |
| Wayne Pisano | - | 13,498 | 0 | 09 Jan, 2026 |
| Andrew Shutterly | Acting Chief Financial Officer | 11,372 | 0 | 01 Aug, 2024 |
| Andrew Shutterly | Acting Chief Financial Officer | 11,372 | 0 | 01 Aug, 2024 |
| Klaus Schafer | - | 9,179 | 0 | 22 Jun, 2022 |
| Klaus Schafer | - | 9,179 | 0 | 22 Jun, 2022 |
| Catherine A. Sohn | - | 1,500 | 0 | 05 Jan, 2026 |
| Catherine A. Sohn | - | 1,500 | 0 | 05 Jan, 2026 |
| Diane Jorkasky | - | 527 | 0 | 29 Dec, 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 Apr, 2026 | John Gill | Common Stock, par value $0.0001 | A | 9,200 | $3.41 | 21,700 | D | P |
| 01 Apr, 2026 | Gregory L Weaver | Common Stock, par value $0.0001 | A | 10,000 | $3.15 | 38,078 | D | P |
| 06 Mar, 2026 | Gregory L Weaver | Common Stock, par value $0.0001 | A | 5,000 | $3.54 | 28,078 | D | P |
| 26 Feb, 2026 | Gregory L Weaver | Stock Options (option to buy) | A | 259,000 | $0.00 | 259,000 | D | A |
| 26 Feb, 2026 | M Scot Roberts | Stock Options (option to buy) | A | 222,670 | $0.00 | 222,670 | D | A |
| 26 Feb, 2026 | M Scot Roberts | Restricted Stock Units | A | 95,430 | $0.00 | 95,430 | D | A |
| 26 Feb, 2026 | Gregory L Weaver | Restricted Stock Units | A | 111,000 | $0.00 | 111,000 | D | A |
| 30 Jan, 2026 | M Scot Roberts | Common Stock, par value $0.0001 | A | 9,275 | $0.00 | 104,670 | D | M |
| 30 Jan, 2026 | M Scot Roberts | Common Stock, par value $0.0001 | D | 2,859 | $5.60 | 101,811 | D | F |
| 31 Jan, 2026 | M Scot Roberts | Common Stock, par value $0.0001 | A | 5,567 | $3.07 | 107,378 | D | A |
| 02 Feb, 2026 | M Scot Roberts | Common Stock, par value $0.0001 | A | 7,775 | $0.00 | 115,153 | D | M |
| 02 Feb, 2026 | M Scot Roberts | Common Stock, par value $0.0001 | D | 2,329 | $5.55 | 112,824 | D | F |
| 30 Jan, 2026 | M Scot Roberts | Restricted Stock Units | D | 9,275 | $0.00 | 9,275 | D | M |
| 02 Feb, 2026 | M Scot Roberts | Restricted Stock Units | D | 7,775 | $0.00 | 0 | D | M |
| 31 Jan, 2026 | Raymond M Jordt | Common Stock, par value $0.0001 | A | 4,571 | $3.07 | 70,107 | D | A |
| 27 Jan, 2026 | M Scot Roberts | Common Stock, par value $0.0001 | A | 15,850 | $0.00 | 100,143 | D | M |
| 27 Jan, 2026 | Raymond M Jordt | Common Stock, par value $0.0001 | A | 15,850 | $0.00 | 69,765 | D | M |
| 27 Jan, 2026 | Raymond M Jordt | Common Stock, par value $0.0001 | D | 4,229 | $6.18 | 65,536 | D | F |
| 27 Jan, 2026 | M Scot Roberts | Common Stock, par value $0.0001 | D | 4,748 | $6.18 | 95,395 | D | F |
| 27 Jan, 2026 | M Scot Roberts | Restricted Stock Units | D | 15,850 | $0.00 | 47,550 | D | M |