Arcus Biosciences's top three insider shareholders as of September 29, 2026 are Sciences, Inc. Gilead (TenPercentOwner, 31.42Mn shares), Terry J Rosen (Chief Executive Officer, 2.24Mn shares), Juan C. Jaen (President, 822.24K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Sciences, Inc. Gilead | TenPercentOwner | 31,424,760 | 0 | 31,424,760 | 88.5% | 20 Feb, 2025 |
| 2 | Terry J Rosen | Chief Executive Officer | 2,236,409 | 0 | 2,236,409 | 6.3% | 26 Jan, 2026 |
| 3 | Juan C. Jaen | President | 0 | 822,240 | 822,240 | 2.3% | 13 Jul, 2026 |
| 4 | Jennifer Jarrett | Chief Operating Officer | 224,024 | 0 | 224,024 | 0.6% | 26 Jan, 2026 |
| 5 | Carolyn C. Tang | General Counsel | 184,607 | 0 | 184,607 | 0.5% | 12 Jun, 2026 |
| 6 | Richard Markus | Chief Medical Officer | 89,647 | 0 | 89,647 | 0.3% | 26 Jan, 2026 |
| 7 | Dimitry Sa Nuyten | Chief Medical Officer | 87,518 | 0 | 87,518 | 0.2% | 17 Dec, 2024 |
| 8 | Ii Robert C. Goeltz | Chief Financial Officer | 84,161 | 0 | 84,161 | 0.2% | 12 May, 2026 |
| 9 | David L. Lacey | Director | 76,652 | 0 | 76,652 | 0.2% | 12 Jun, 2026 |
| 10 | Andrew J Perlman | Director | 48,325 | 0 | 48,325 | 0.1% | 12 Jun, 2026 |
| 11 | Antoni Ribas | Director | 44,300 | 0 | 44,300 | 0.1% | 12 Jun, 2026 |
| 12 | Kathryn E Falberg | Director | 44,300 | 0 | 44,300 | 0.1% | 12 Jun, 2026 |
| 13 | Patrick Machado | Director | 44,300 | 0 | 44,300 | 0.1% | 12 Jun, 2026 |
| 14 | Nicole Lambert | Director | 43,000 | 0 | 43,000 | 0.1% | 12 Jun, 2026 |
| 15 | Alexander Azoy | Chief Accounting Officer | 39,581 | 0 | 39,581 | 0.1% | 24 Aug, 2026 |
| 16 | Yasunori Kaneko | Director | 25,700 | 0 | 25,700 | 0.1% | 12 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 21 Aug, 2026 | Alexander Azoy | Chief Accounting Officer | Acquired M | 2,827 | $15.44 | $43.65K | 42,408 | Direct |
| 21 Aug, 2026 | Alexander Azoy | Chief Accounting Officer | Disposed S | 2,827 | $30.00 | $84.81K | 39,581 | Direct |
| 21 Aug, 2026 | Alexander Azoy | Chief Accounting Officer | Disposed M | 2,827 | $0.00 | $0 | 3,073 | Direct |
| 09 Jul, 2026 | Juan C. Jaen | President | Disposed S | 48,502 | $30.05 | $1.46Mn | 842,307 | Indirect |
| 10 Jul, 2026 | Juan C. Jaen | President | Disposed S | 19,799 | $28.61 | $566.41K | 822,508 | Indirect |
| 10 Jul, 2026 | Juan C. Jaen | President | Disposed S | 268 | $29.40 | $7.88K | 822,240 | Indirect |
| 22 Jun, 2026 | Juan C. Jaen | President | Disposed S | 9,236 | $27.03 | $249.66K | 913,004 | Indirect |
| 23 Jun, 2026 | Juan C. Jaen | President | Disposed S | 14,067 | $27.69 | $389.48K | 898,937 | Indirect |
| 23 Jun, 2026 | Juan C. Jaen | President | Disposed S | 1,697 | $28.06 | $47.62K | 897,240 | Indirect |
| 24 Jun, 2026 | Juan C. Jaen | President | Disposed S | 6,431 | $29.66 | $190.74K | 890,809 | Indirect |
| 11 Jun, 2026 | Kathryn E Falberg | Director | Acquired A | 5,700 | $0.00 | $0 | 44,300 | Direct |
| 11 Jun, 2026 | Andrew J Perlman | Director | Acquired A | 5,700 | $0.00 | $0 | 48,325 | Direct |
| 11 Jun, 2026 | Nicole Lambert | Director | Acquired A | 5,700 | $0.00 | $0 | 43,000 | Direct |
| 11 Jun, 2026 | Yasunori Kaneko | Director | Acquired A | 5,700 | $0.00 | $0 | 25,700 | Direct |
| 11 Jun, 2026 | Antoni Ribas | Director | Acquired A | 5,700 | $0.00 | $0 | 44,300 | Direct |
| 11 Jun, 2026 | David L. Lacey | Director | Acquired A | 5,700 | $0.00 | $0 | 76,652 | Direct |
| 11 Jun, 2026 | Carolyn C. Tang | General Counsel | Acquired M | 34,090 | $2.57 | $87.75K | 184,607 | Direct |
| 11 Jun, 2026 | Patrick Machado | Director | Acquired A | 5,700 | $0.00 | $0 | 44,300 | Direct |
| 11 Jun, 2026 | Andrew J Perlman | Director | Acquired A | 16,900 | $0.00 | $0 | 16,900 | Direct |
| 11 Jun, 2026 | David L. Lacey | Director | Acquired A | 16,900 | $0.00 | $0 | 16,900 | Direct |