Lee Sung (CIK 1793200) reported 28 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-07-02). Recent activity: Buy CYTK (1,112 shares), Sell CYTK (1,112 shares), Buy CYTK (822 shares), Buy CYTK (23,370 shares), Buy CYTK (822 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 1,112 | $53,943 |
| 2026-07-02 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Sell | 1,112 | $97,622 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 822 | $36,464 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 23,370 | $1.1M |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 822 | $36,464 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 9,307 | $412,859 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 2,817 | $124,962 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 1,113 | $53,992 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 188 | $8,340 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 1,113 | $53,992 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 188 | $8,340 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 823 | $36,508 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 188 | $8,340 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Sell | 3,134 | $266,390 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 1,113 | $53,992 |
| 2026-06-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Sell | 38,730 | $3.2M |
| 2026-06-08 | Tango Therapeutics, Inc. (TNGX) | Director | Buy | 570 | $0 |
| 2026-05-05 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Sell | 23,906 | $1.8M |
| 2026-05-01 | Tango Therapeutics, Inc. (TNGX) | Director | Buy | 12,300 | $0 |
| 2026-03-18 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Sell | 4,935 | $306,710 |
| 2026-03-17 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 20,646 | $0 |
| 2026-01-06 | Tango Therapeutics, Inc. (TNGX) | Director | Buy | 10,000 | $0 |
| 2025-12-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 2,152 | $0 |
| 2025-12-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Buy | 2,152 | $0 |
| 2025-12-29 | CYTOKINETICS INC (CYTK) | EVP, Chief Financial Officer | Sell | 805 | $50,490 |
Source: SEC Form 4 filings · as of 2026-07-02