CRISPR Therapeutics AG's three largest insider shareholders as of August 29, 2026 are Simeon George (Director, 2.04Mn shares), Rodger Novak (President, 573.01K shares), Samarth Kulkarni (Chief Executive Officer, 255.50K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Simeon George | Director | 0 | 2,038,763 | 2,038,763 | 71.7% | 17 Jul, 2025 |
| 2 | Rodger Novak | President | 573,007 | 0 | 573,007 | 20.2% | 01 Jul, 2021 |
| 3 | James R. Kasinger | General Counsel And Secretary | 94,308 | 0 | 94,308 | 3.3% | 24 Mar, 2026 |
| 4 | Tony W Ho | Executive Vp, Head Of Rd | 52,364 | 0 | 52,364 | 1.8% | 07 Dec, 2021 |
| 5 | Douglas A Treco | Director | 22,000 | 0 | 22,000 | 0.8% | 08 Aug, 2025 |
| 6 | Naimish Patel | Chief Medical Officer | 19,357 | 0 | 19,357 | 0.7% | 01 Jun, 2026 |
| 7 | Raju Prasad | Chief Financial Officer | 14,815 | 0 | 14,815 | 0.5% | 11 Aug, 2026 |
| 8 | Julianne Bruno | Chief Operating Officer | 10,544 | 0 | 10,544 | 0.4% | 24 Mar, 2025 |
| 9 | John Greene | Director | 7,000 | 0 | 7,000 | 0.2% | 28 Feb, 2025 |
| 10 | Brendan Smith | Chief Financial Officer | 5,072 | 0 | 5,072 | 0.2% | 22 Feb, 2023 |
| 11 | Phuong Khanh Morrow | Chief Medical Officer | 4,411 | 0 | 4,411 | 0.2% | 25 May, 2023 |
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 |
|---|---|---|---|---|---|---|---|---|
| 07 Aug, 2026 | Raju Prasad | Chief Financial Officer | Disposed G | 750 | $0.00 | $0 | 14,815 | Direct |
| 05 Jun, 2026 | Harold Edward Fleming | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Simeon George | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Maria Fardis | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | John Greene | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Christian Rommel | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Douglas A Treco | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Briggs Morrison | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Sandesh Mahatme | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 29 May, 2026 | Naimish Patel | Chief Medical Officer | Acquired A | 22,000 | $0.00 | $0 | 22,000 | Direct |
| 29 May, 2026 | James R. Kasinger | General Counsel And Secretary | Acquired A | 17,000 | $0.00 | $0 | 17,000 | Direct |
| 29 May, 2026 | Raju Prasad | Chief Financial Officer | Acquired A | 19,500 | $0.00 | $0 | 19,500 | Direct |
| 28 May, 2026 | Naimish Patel | Chief Medical Officer | Acquired M | 10,000 | — | — | 23,143 | Direct |
| 29 May, 2026 | Naimish Patel | Chief Medical Officer | Disposed S | 3,786 | $55.62 | $210.58K | 19,357 | Direct |
| 28 May, 2026 | Naimish Patel | Chief Medical Officer | Disposed M | 10,000 | — | — | 20,000 | Direct |
| 20 Mar, 2026 | Raju Prasad | Chief Financial Officer | Acquired M | 6,250 | — | — | 19,273 | Direct |
| 20 Mar, 2026 | James R. Kasinger | General Counsel And Secretary | Acquired M | 6,250 | — | — | 97,490 | Direct |
| 20 Mar, 2026 | Naimish Patel | Chief Medical Officer | Acquired A | 38,499 | $0.00 | $0 | 38,499 | Direct |
| 20 Mar, 2026 | Naimish Patel | Chief Medical Officer | Acquired A | 30,000 | $0.00 | $0 | 30,000 | Direct |
| 23 Mar, 2026 | James R. Kasinger | General Counsel And Secretary | Disposed S | 3,182 | $46.78 | $148.85K | 94,308 | Direct |