As of September 29, 2026, the three largest insider holders of CRSP are Simeon George (Director, 2.04Mn shares), Samarth Kulkarni (Chief Executive Officer, 255.50K shares), James R. Kasinger (General Counsel And Secretary, 94.78K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Simeon George | Director | 0 | 2,038,763 | 2,038,763 | 79.4% | 17 Jul, 2025 |
| 2 | Samarth Kulkarni | Chief Executive Officer | 255,501 | 0 | 255,501 | 9.9% | 24 Mar, 2026 |
| 3 | James R. Kasinger | General Counsel And Secretary | 94,784 | 0 | 94,784 | 3.7% | 24 Sep, 2026 |
| 4 | Tony W Ho | Executive Vp, Head Of Rd | 52,364 | 0 | 52,364 | 2.0% | 07 Dec, 2021 |
| 5 | Lawrence Otto Klein | Cbo Coo | 26,797 | 0 | 26,797 | 1.0% | 14 Mar, 2022 |
| 6 | Douglas A Treco | Director | 22,000 | 0 | 22,000 | 0.9% | 08 Aug, 2025 |
| 7 | Naimish Patel | Chief Medical Officer | 19,357 | 0 | 19,357 | 0.8% | 01 Jun, 2026 |
| 8 | Ali Behbahani | Director | 16,637 | 0 | 16,637 | 0.6% | 21 Sep, 2026 |
| 9 | Raju Prasad | Chief Financial Officer | 14,815 | 0 | 14,815 | 0.6% | 11 Aug, 2026 |
| 10 | Julianne Bruno | Chief Operating Officer | 10,544 | 0 | 10,544 | 0.4% | 24 Mar, 2025 |
| 11 | John Greene | Director | 7,000 | 0 | 7,000 | 0.3% | 28 Feb, 2025 |
| 12 | Brendan Smith | Chief Financial Officer | 5,072 | 0 | 5,072 | 0.2% | 22 Feb, 2023 |
| 13 | 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 |
|---|---|---|---|---|---|---|---|---|
| 22 Sep, 2026 | James R. Kasinger | General Counsel And Secretary | Acquired M | 10,400 | $13.62 | $141.65K | 105,184 | Direct |
| 22 Sep, 2026 | James R. Kasinger | General Counsel And Secretary | Disposed S | 10,400 | $60.24 | $626.46K | 94,784 | Direct |
| 22 Sep, 2026 | James R. Kasinger | General Counsel And Secretary | Disposed M | 10,400 | $0.00 | $0 | 83,232 | Direct |
| 17 Sep, 2026 | Ali Behbahani | Director | Acquired M | 30,000 | $14.00 | $420.00K | 30,316 | Direct |
| 17 Sep, 2026 | Ali Behbahani | Director | Disposed S | 13,679 | $57.09 | $780.94K | 16,637 | Direct |
| 17 Sep, 2026 | Ali Behbahani | Director | Disposed M | 30,000 | $0.00 | $0 | 0 | Direct |
| 07 Aug, 2026 | Raju Prasad | Chief Financial Officer | Disposed G | 750 | $0.00 | $0 | 14,815 | Direct |
| 05 Jun, 2026 | Simeon George | 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 |
| 05 Jun, 2026 | Maria Fardis | 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 | John Greene | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Ali Behbahani | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Harold Edward Fleming | Director | Acquired A | 13,000 | $0.00 | $0 | 13,000 | Direct |
| 05 Jun, 2026 | Katherine A High | 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 |
| 29 May, 2026 | Naimish Patel | Chief Medical Officer | Acquired A | 22,000 | $0.00 | $0 | 22,000 | Direct |
| 29 May, 2026 | Raju Prasad | Chief Financial Officer | Acquired A | 19,500 | $0.00 | $0 | 19,500 | Direct |
| 29 May, 2026 | James R. Kasinger | General Counsel And Secretary | Acquired A | 17,000 | $0.00 | $0 | 17,000 | Direct |