SEC Form 4
CRISPR Therapeutics AG (CRSP) insider trading
In the 12 months to Oct 24, 2026, 5 CRSP insiders reported open-market sales of $11.9M across 8 filings; one chief medical officer bought $49.7K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $11.9M
- 8 filings · 5 insiders
- Open-market purchases
- $49.7K
- 1 filing · Naimish Patel, Chief Medical Officer
- Pre-arranged sales (10b5-1)
- 7 of 8
- $11.1M of $11.9M sold (93%)
Who traded CRSP, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
CRSP daily close from Oct 24, 2025 to Oct 23, 2026, between $44.34 and $67.61, last $49.39. 8 sale and 1 purchase filings by 6 insiders, marked at their filing dates. Samarth Kulkarni, Chief Executive Officer: sold $5.2M across 1 filing, first filed Jan 22, 2026, last Jan 22, 2026. Raju Prasad, Chief Financial Officer: sold $4.5M across 3 filings, first filed Dec 23, 2025, last Jan 26, 2026. Ali Behbahani, Director: sold $780.9K across 1 filing, first filed Sep 21, 2026, last Sep 21, 2026. James R. Kasinger, General Counsel and Secretary: sold $745.9K across 2 filings, first filed Sep 24, 2026, last Oct 8, 2026. Simeon George, Director: sold $720.4K across 1 filing, first filed Oct 16, 2026, last Oct 16, 2026. Naimish Patel, Chief Medical Officer: bought $49.7K across 1 filing, first filed Jan 27, 2026, last Jan 27, 2026.
Largest mark · tap a row for others
Samarth Kulkarni · Chief Executive Officer
Sale $5,166,298
90,000 shares at $57.40 avg
Filed Jan 22, 2026 · traded Jan 20
Pre-arranged (10b5-1) · close on filing date $60.81
Samarth Kulkarni · Chief Executive Officer
Chief Executive Officer
$5.2M soldRaju Prasad · Chief Financial Officer
Chief Financial Officer
$4.5M soldAli Behbahani · Director
Director
$780.9K soldJames R. Kasinger · General Counsel and Secretary
General Counsel and Secretary
$745.9K soldSimeon George · Director
Director
$720.4K soldNaimish Patel · Chief Medical Officer
Chief Medical Officer
$49.7K boughtHas CRISPR Therapeutics AG's CEO sold stock?
Yes. Samarth Kulkarni (CEO) sold 90,000 shares ($5.2M) in Jan 2026, all under a pre-arranged 10b5-1 plan.
Open-market trades
9 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Samarth Kulkarni | Chief Executive Officer | $5.2M | — | 1 | 100% of sales | |
| Raju Prasad | Chief Financial Officer | $4.5M | — | 3 | 100% of sales | |
| Ali Behbahani | Director | $780.9K | — | 1 | — | |
| James R. Kasinger | General Counsel and Secretary | $745.9K | — | 2 | 100% of sales | |
| Simeon George | Director | $720.4K | — | 1 | 100% of sales | |
| Naimish Patel | Chief Medical Officer | — | $49.7K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Simeon George Director | SalePre-arranged (10b5-1) | 14,514 | $49.63 | $720.4K | 15,486 | |
traded | James R. Kasinger General Counsel and Secretary | SalePre-arranged (10b5-1) | 1,990 | $60.04 | $119.5K | 94,784 | |
traded | James R. Kasinger General Counsel and Secretary | SalePre-arranged (10b5-1) | 10,400 | $60.24 | $626.5K | 94,784 | |
traded | Ali Behbahani Director | Sale | 13,679 | $57.09 | $780.9K | 16,637 | |
traded | Naimish Patel Chief Medical Officer | Purchase | 1,508 | $32.96 | $49.7K | 1,508 | |
traded | Raju Prasad Chief Financial Officer | SalePre-arranged (10b5-1) | 34,972 | $60.19 | $2.1M | 6,767 | |
traded | Samarth Kulkarni Chief Executive Officer | SalePre-arranged (10b5-1) | 90,000 | $57.40 | $5.2M | 134,201 | |
traded | Raju Prasad Chief Financial Officer | SalePre-arranged (10b5-1) | 29,700 | $60.16 | $1.8M | 17,534 | |
traded | Raju Prasad Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $55.95 | $559.5K | 6,767 |
GET /stocks/filings/vX/form-4?tickers=CRSP&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"CRSP"
],
"issuer_cik": "0001674416",
"owner_cik": "0001595117",
"accession_number": "0001193125-26-424317",
"form_type": "4",
"filing_date": "2026-10-16",
"period_of_report": "2026-10-14",
"issuer_name": "CRISPR Therapeutics AG",
"issuer_trading_symbol": "CRSP",
"owner_name": "George Simeon",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-14",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 14514,
"transaction_price_per_share": 49.633,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 15486,
"transaction_value": 720373.3620000001,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 12, 2025."
},
{
"id": "F2",
"description": "The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.45 to $50.44 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
}
]
},
{
"tickers": [
"CRSP"
],
"issuer_cik": "0001674416",
"owner_cik": "0001708172",
"accession_number": "0001193125-26-418101",
"form_type": "4",
"filing_date": "2026-10-08",
"period_of_report": "2026-10-06",
"issuer_name": "CRISPR Therapeutics AG",
"issuer_trading_symbol": "CRSP",
"owner_name": "KASINGER JAMES R.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "General Counsel and Secretary",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-06",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1990,
"transaction_price_per_share": 60.0408,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 94784,
"transaction_value": 119481.192,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 6, 2026."
},
{
"id": "F2",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.00 to $60.08, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 44 records
- Option exercises23 records
- Tax withholding (sold to cover)16 records
- Gifts3 records
- Other2 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for CRSP every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.