CRISPR Therapeutics AG (CRSP) has 20 known insider and institutional holders on record. The largest holder is BAYER AKTIENGESELLSCHAFT with 5,632,802 shares. Other notable holders include Vertex Pharmaceuticals (Europe) Ltd and EMSTER KURT VON.
Over the last 12 months, insiders have made 61 transactions in CRSP stock — 22 buys (valued at $13.25M) and 20 sells (valued at $14.03M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
CRSP Insider Ownership
Top Holder
BAYER AKTIENGESELLSCHAFT
5,632,802 shares
Buys (12 mo)
22
$13.25M value
Sells (12 mo)
20
$14.03M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Bayer Aktiengesellschaft |
10 Percent Owner |
5,632,802 |
2018-01-30 |
|
| 2 |
Vertex Pharmaceuticals (europe) Ltd |
10 Percent Owner |
5,353,479 |
2018-12-28 |
|
| 3 |
Emster Kurt Von |
Director |
1,171,268 |
2019-01-18 |
|
| 4 |
Novak Rodger |
President |
573,007 |
2021-07-01 |
|
| 5 |
Tomsicek Michael John |
Chief Financial Officer |
131,000 |
2021-08-10 |
|
| 6 |
George Simeon |
Director |
69,687 |
2025-07-17 |
|
| 7 |
Versant Venture Capital Iv, L.p. |
10 Percent Owner |
45,171 |
2018-04-24 |
|
| 8 |
Versant Venture Capital V, L.p. |
10 Percent Owner |
44,582 |
2018-04-26 |
|
| 9 |
Kulkarni Samarth |
Chief Executive Officer |
39,375 |
2026-03-24 |
|
| 10 |
Woiwode Thomas |
Director |
30,000 |
2018-06-15 |
|
| 11 |
Patel Naimish |
Chief Medical Officer |
30,000 |
2026-03-24 |
|
| 12 |
Treco Douglas A |
Director |
22,000 |
2025-08-08 |
|
| 13 |
Morrow Phuong Khanh |
Chief Medical Officer |
16,667 |
2023-10-17 |
|
| 14 |
Cagnoni Pablo J |
Director |
15,000 |
2019-06-13 |
|
| 15 |
Ho Tony W |
Executive VP, Head of R&d |
13,333 |
2021-12-07 |
|
| 16 |
Rommel Christian |
Director |
13,000 |
2025-06-06 |
|
| 17 |
High Katherine A |
Director |
13,000 |
2025-06-06 |
|
| 18 |
Fleming Harold Edward |
Director |
13,000 |
2025-06-06 |
|
| 19 |
Mahatme Sandesh |
Director |
13,000 |
2025-06-06 |
|
| 20 |
Greene John |
Director |
13,000 |
2025-06-06 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-20 |
Patel Naimish |
Chief Medical Officer |
RSU Award |
30,000 |
- |
- |
| 2026-03-23 |
Prasad Raju |
Chief Financial Officer |
Informative Sell |
3,708 |
$46.78 |
$173.46K |
| 2026-03-20 |
Prasad Raju |
Chief Financial Officer |
Option Exercise (Sell) |
6,250 |
- |
- |
| 2026-03-23 |
Kasinger James R. |
General Counsel and Secretary |
Informative Sell |
3,182 |
$46.78 |
$148.85K |
| 2026-03-20 |
Kasinger James R. |
General Counsel and Secretary |
Option Exercise (Sell) |
6,250 |
- |
- |
| 2026-03-23 |
Kulkarni Samarth |
Chief Executive Officer |
Informative Sell |
10,020 |
$46.78 |
$468.74K |
| 2026-03-20 |
Kulkarni Samarth |
Chief Executive Officer |
Option Exercise (Sell) |
19,687 |
- |
- |
| 2026-03-16 |
Patel Naimish |
Chief Medical Officer |
Informative Sell |
3,150 |
$48.26 |
$152.02K |
| 2026-03-14 |
Patel Naimish |
Chief Medical Officer |
Option Exercise |
8,125 |
- |
- |
| 2026-03-16 |
Prasad Raju |
Chief Financial Officer |
Gift (Given) |
750 |
- |
- |
| 2026-03-14 |
Prasad Raju |
Chief Financial Officer |
Option Exercise (Sell) |
10,000 |
- |
- |
| 2026-03-16 |
Kasinger James R. |
General Counsel and Secretary |
Informative Sell |
3,450 |
$48.26 |
$166.5K |
| 2026-03-14 |
Kasinger James R. |
General Counsel and Secretary |
Option Exercise (Sell) |
6,875 |
- |
- |
| 2026-03-16 |
Kulkarni Samarth |
Chief Executive Officer |
Informative Sell |
10,349 |
$48.26 |
$499.44K |
| 2026-03-14 |
Kulkarni Samarth |
Chief Executive Officer |
Option Exercise (Sell) |
20,625 |
- |
- |
| 2026-03-11 |
Kasinger James R. |
General Counsel and Secretary |
Informative Sell |
2,800 |
$52.80 |
$147.84K |
| 2026-03-10 |
Kasinger James R. |
General Counsel and Secretary |
Option Exercise (Sell) |
5,500 |
- |
- |
| 2026-03-11 |
Kulkarni Samarth |
Chief Executive Officer |
Informative Sell |
9,798 |
$52.80 |
$517.33K |
| 2026-03-10 |
Kulkarni Samarth |
Chief Executive Officer |
Option Exercise (Sell) |
19,250 |
- |
- |
| 2026-02-19 |
Kasinger James R. |
General Counsel and Secretary |
Informative Sell |
2,112 |
$52.58 |
$111.05K |
| 2026-02-18 |
Kasinger James R. |
General Counsel and Secretary |
Option Exercise (Sell) |
3,825 |
- |
- |
| 2026-02-19 |
Kulkarni Samarth |
Chief Executive Officer |
Informative Sell |
6,967 |
$52.58 |
$366.32K |
| 2026-02-18 |
Kulkarni Samarth |
Chief Executive Officer |
Option Exercise (Sell) |
13,250 |
- |
- |
| 2025-04-03 |
Patel Naimish |
Chief Medical Officer |
Informative Buy |
1,508 |
$32.96 |
$49.7K |
| 2026-01-22 |
Prasad Raju |
Chief Financial Officer |
Informative Sell |
34,972 |
$60.19 |
$2.1M |
