As of August 29, 2026, the three largest insider holders of VKTX are Brian Lian (President Ceo, 2.50Mn shares), Marianna Mancini (Chief Operating Officer, 422.76K shares), Greg Zante (Chief Financial Officer, 212.20K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Brian Lian | President Ceo | 2,499,291 | 0 | 2,499,291 | 73.9% | 05 Jan, 2026 |
| 2 | Marianna Mancini | Chief Operating Officer | 422,760 | 0 | 422,760 | 12.5% | 29 Jul, 2026 |
| 3 | Greg Zante | Chief Financial Officer | 212,204 | 0 | 212,204 | 6.3% | 29 Jul, 2026 |
| 4 | Matthew W Foehr | Director | 135,186 | 0 | 135,186 | 4.0% | 05 Jan, 2026 |
| 5 | Lawson Macartney | Director | 51,115 | 0 | 51,115 | 1.5% | 05 Jan, 2026 |
| 6 | Charles A Jr Rowland | Director | 33,150 | 0 | 33,150 | 1.0% | 05 Jan, 2026 |
| 7 | J Matthew Singleton | Director | 12,650 | 0 | 12,650 | 0.4% | 05 Jan, 2026 |
| 8 | Dorothy Elizabeth Kelly-Gemmell | Director | 6,333 | 0 | 6,333 | 0.2% | 07 Aug, 2026 |
| 9 | Neil William Aubuchon | Chief Commercial Officer | 4,475 | 0 | 4,475 | 0.1% | 10 Mar, 2026 |
| 10 | Sarah Kathryn Rouan | Director | 4,390 | 0 | 4,390 | 0.1% | 05 Jan, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 01 Aug, 2026 | Dorothy Elizabeth Kelly-Gemmell | Director | Acquired A | 6,333 | $0.00 | $0 | 6,333 | Direct |
| 01 Aug, 2026 | Dorothy Elizabeth Kelly-Gemmell | Director | Acquired A | 40,800 | $0.00 | $0 | 40,800 | Direct |
| 28 Jul, 2026 | Greg Zante | Chief Financial Officer | Acquired A | 31,667 | $0.00 | $0 | 233,421 | Direct |
| 28 Jul, 2026 | Marianna Mancini | Chief Operating Officer | Acquired A | 31,667 | $0.00 | $0 | 440,977 | Direct |
| 29 Jul, 2026 | Marianna Mancini | Chief Operating Officer | Disposed S | 18,217 | $33.47 | $609.64K | 422,760 | Direct |
| 29 Jul, 2026 | Greg Zante | Chief Financial Officer | Disposed S | 21,217 | $33.47 | $710.14K | 212,204 | Direct |
| 01 Jun, 2026 | Hubert C Chen | Chief Medical Officer | Acquired A | 190,000 | $0.00 | $0 | 190,000 | Direct |
| 10 Mar, 2026 | Neil William Aubuchon | Chief Commercial Officer | Acquired P | 4,475 | $33.50 | $149.91K | 4,475 | Direct |
| 12 Jan, 2026 | Neil William Aubuchon | Chief Commercial Officer | Acquired A | 180,000 | $0.00 | $0 | 180,000 | Direct |
| 02 Jan, 2026 | Greg Zante | Chief Financial Officer | Acquired A | 41,000 | $0.00 | $0 | 215,483 | Direct |
| 02 Jan, 2026 | J Matthew Singleton | Director | Acquired A | 3,150 | $0.00 | $0 | 12,650 | Direct |
| 02 Jan, 2026 | Brian Lian | President Ceo | Acquired A | 78,400 | $0.00 | $0 | 2,508,620 | Direct |
| 02 Jan, 2026 | Greg Zante | Chief Financial Officer | Acquired A | 41,000 | $0.00 | $0 | 215,483 | Direct |
| 02 Jan, 2026 | Lawson Macartney | Director | Acquired A | 3,150 | $0.00 | $0 | 51,115 | Direct |
| 02 Jan, 2026 | Charles A Jr Rowland | Director | Acquired A | 3,150 | $0.00 | $0 | 33,150 | Direct |
| 02 Jan, 2026 | Greg Zante | Chief Financial Officer | Acquired A | 41,000 | $0.00 | $0 | 215,483 | Direct |
| 02 Jan, 2026 | Sarah Kathryn Rouan | Director | Acquired A | 3,150 | $0.00 | $0 | 4,390 | Direct |
| 02 Jan, 2026 | Greg Zante | Chief Financial Officer | Acquired A | 41,000 | $0.00 | $0 | 215,483 | Direct |
| 02 Jan, 2026 | Matthew W Foehr | Director | Acquired M | 16,000 | $3.33 | $53.28K | 148,036 | Direct |
| 02 Jan, 2026 | Marianna Mancini | Chief Operating Officer | Acquired A | 41,000 | $0.00 | $0 | 434,802 | Direct |