Updated Jul 16, 2026 · Last SEC filing 2026-07-14
CYTOKINETICS INC (CYTK) has filed 32 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-14. 4 Form 8-K material event filings were reported by CYTK in the last 90 days. 9 Form 144 notices of proposed sale were filed for CYTK stock. InsiderAlpha tracks every CYTK SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Pharmaceutical Preparations (SIC 2834) |
|---|---|
| SEC CIK | 0001061983 |
| Form 4 filings (90d) | 32 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 9 |
| Latest Form 4 filing | 2026-07-14 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Blum Robert I | President & CEO | S — Open-market sale [10b5-1] | 7.5K | $82.02 | $614K | SEC | |
| Blum Robert I | President & CEO | M — Option exercise [10b5-1] | 7.5K | $10.60 | $79K | SEC | |
| Blum Robert I | President & CEO | S — Open-market sale [10b5-1] | 10 | $82.02 | $820 | SEC | |
| Malik Fady Ibraham | EVP Research & Development | S — Open-market sale | 3.5K | $86.62 | $303K | SEC | |
| Malik Fady Ibraham | EVP Research & Development | M — Option exercise | 3.5K | $7.80 | $27K | SEC | |
| Callos Andrew | EVP, Chief Commercial Officer | S — Open-market sale | 15.0K | $85.80 | $1.29M | SEC | |
| Callos Andrew | EVP, Chief Commercial Officer | M — Option exercise | 15.0K | $23.26 | $349K | SEC | |
| Lee Sung | EVP, Chief Financial Officer | S — Open-market sale | 1.1K | $87.79 | $98K | SEC | |
| Blum Robert I | President & CEO | S — Open-market sale | 7.5K | $84.92 | $637K | SEC | |
| Lee Sung | EVP, Chief Financial Officer | M — Option exercise | 1.1K | $48.51 | $54K | SEC | |
| Lee Sung | EVP, Chief Financial Officer | M — Option exercise | 188 | $44.36 | $8K | SEC | |
| Lee Sung | EVP, Chief Financial Officer | M — Option exercise | 823 | $44.36 | $37K | SEC | |
| Lee Sung | EVP, Chief Financial Officer | M — Option exercise | 822 | $44.36 | $36K | SEC | |
| Lee Sung | EVP, Chief Financial Officer | M — Option exercise | 1.1K | $48.51 | $54K | SEC | |
| Lee Sung | EVP, Chief Financial Officer | M — Option exercise | 188 | $44.36 | $8K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for CYTOKINETICS INC (CYTK). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Malik Fady Ibraham | 18 | $1.75M |
| Lee Sung | 15 | $2.40M |
| Callos Andrew | 12 | $6.04M |
| Blum Robert I | 9 | $3.47M |
| HENDERSON JOHN T | 5 | $1.67M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in CYTK insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
Open the live CYTK dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.