Sung Lee
Insider
First SEC filing: June 8, 2026 · Latest: June 8, 2026
Insider at
Insider transactions
0 buys (P)
5 sells (S)
Net: $-5,695,855
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| July 1, 2026 | CYTK | M | 1,112 | · | · | 26,709 Direct | -4.00% | Disposed | (price as of 2026-10-05) |
| July 1, 2026 | CYTK | S | 1,112 | $87.79 | $97,622 | 63,221 Direct | -1.73% | Disposed | -26.8% (price as of 2026-10-05) |
| July 1, 2026 | CYTK | M | 1,112 | $48.51 | $53,943 | 64,333 Direct | +1.76% | Acquired | 32.5% (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 823 | · | · | 39,681 Direct | -2.03% | Disposed | (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 188 | · | · | 8,640 Direct | -2.13% | Disposed | (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 1,113 | · | · | 52,304 Direct | -2.08% | Disposed | (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 822 | · | · | 40,504 Direct | -1.99% | Disposed | (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 188 | · | · | 8,828 Direct | -2.09% | Disposed | (price as of 2026-10-05) |
| June 29, 2026 | CYTK | S | 3,134 | $85.00 | $266,390 | 63,221 Direct | -4.72% | Disposed | -24.4% (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 823 | $44.36 | $36,508 | 66,355 Direct | +1.26% | Acquired | 44.9% (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 188 | $44.36 | $8,340 | 65,532 Direct | +0.29% | Acquired | 44.9% (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 1,113 | $48.51 | $53,992 | 65,344 Direct | +1.73% | Acquired | 32.5% (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 822 | $44.36 | $36,464 | 64,231 Direct | +1.30% | Acquired | 44.9% (price as of 2026-10-05) |
| June 29, 2026 | CYTK | M | 188 | $44.36 | $8,340 | 63,409 Direct | +0.30% | Acquired | 44.9% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 1,113 | · | · | 27,821 Direct | -3.85% | Disposed | (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 822 | · | · | 31,197 Direct | -2.57% | Disposed | (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 188 | · | · | 6,011 Direct | -3.03% | Disposed | (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 1,113 | · | · | 28,934 Direct | -3.70% | Disposed | (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 2,817 | · | · | 6,199 Direct | -31.24% | Disposed | (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 9,307 | · | · | 32,019 Direct | -22.52% | Disposed | (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 23,370 | · | · | 30,047 Direct | -43.75% | Disposed | (price as of 2026-10-05) |
| June 24, 2026 | CYTK | S | 38,730 | $82.30 | $3,187,479 | 63,221 Direct | -37.99% | Disposed | -21.9% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 1,113 | $48.51 | $53,992 | 101,951 Direct | +1.10% | Acquired | 32.5% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 822 | $44.36 | $36,464 | 100,838 Direct | +0.82% | Acquired | 44.9% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 188 | $44.36 | $8,340 | 100,016 Direct | +0.19% | Acquired | 44.9% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 1,113 | $48.51 | $53,992 | 99,828 Direct | +1.13% | Acquired | 32.5% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 2,817 | $44.36 | $124,962 | 98,715 Direct | +2.94% | Acquired | 44.9% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 9,307 | $44.36 | $412,859 | 95,898 Direct | +10.75% | Acquired | 44.9% (price as of 2026-10-05) |
| June 24, 2026 | CYTK | M | 23,370 | $48.51 | $1,133,679 | 86,591 Direct | +36.97% | Acquired | 32.5% (price as of 2026-10-05) |
| June 5, 2026 | TNGX | A | 3,570 | · | · | 3,570 Direct | · | Acquired | (price as of 2026-10-05) |
| June 5, 2026 | TNGX | A | 570 | · | · | 22,870 Direct | +2.56% | Acquired | (price as of 2026-10-05) |
| May 5, 2026 | CYTK | S | 23,906 | $76.87 | $1,837,654 | 63,221 Direct | -27.44% | Disposed | -16.4% (price as of 2026-10-05) |
| April 29, 2026 | TNGX | A | 5,200 | · | · | 5,200 Direct | · | Acquired | (price as of 2026-10-05) |
| April 29, 2026 | TNGX | A | 12,300 | · | · | 22,300 Direct | +123.00% | Acquired | (price as of 2026-10-05) |
| March 17, 2026 | CYTK | S | 4,935 | $62.15 | $306,710 | 87,127 Direct | -5.36% | Disposed | 3.4% (price as of 2026-10-05) |
| March 15, 2026 | CYTK | A | 29,480 | · | · | 29,480 Direct | · | Acquired | (price as of 2026-10-05) |
| March 15, 2026 | CYTK | A | 1,665 | · | · | 1,665 Direct | · | Acquired | (price as of 2026-10-05) |
| March 15, 2026 | CYTK | A | 20,646 | · | · | 92,062 Direct | +28.91% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2026 | TNGX | A | 60,000 | · | · | 60,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2026 | TNGX | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 22, 2025 | CYTK | F | 805 | $62.72 | $50,490 | 71,416 Direct | -1.11% | Disposed | 2.5% (price as of 2026-10-05) |
| Dec. 22, 2025 | CYTK | A | 2,152 | · | · | 72,221 Direct | +3.07% | Acquired | (price as of 2026-10-05) |
| Dec. 22, 2025 | CYTK | A | 2,152 | · | · | 70,069 Direct | +3.17% | Acquired | (price as of 2026-10-05) |
| Dec. 3, 2025 | CYTK | F | 1,560 | $65.02 | $101,431 | 67,917 Direct | -2.25% | Disposed | -1.2% (price as of 2026-10-05) |
| June 2, 2025 | CYTK | F | 4,965 | $31.21 | $154,958 | 69,477 Direct | -6.67% | Disposed | 105.9% (price as of 2026-10-05) |
| March 14, 2025 | CYTK | A | 41,326 | · | · | 41,326 Direct | · | Acquired | (price as of 2026-10-05) |
| March 14, 2025 | CYTK | A | 9,016 | · | · | 9,016 Direct | · | Acquired | (price as of 2026-10-05) |
| March 14, 2025 | CYTK | A | 32,687 | · | · | 74,442 Direct | +78.28% | Acquired | (price as of 2026-10-05) |
| Dec. 3, 2024 | CYTK | A | 4,304 | · | · | 41,755 Direct | +11.49% | Acquired | (price as of 2026-10-05) |
| Dec. 3, 2024 | CYTK | F | 1,536 | $51.51 | $79,119 | 37,451 Direct | -3.94% | Disposed | 24.8% (price as of 2026-10-05) |
| Dec. 3, 2024 | CYTK | A | 4,303 | · | · | 38,987 Direct | +12.41% | Acquired | (price as of 2026-10-05) |
| May 31, 2024 | CYTK | A | 53,417 | · | · | 53,417 Direct | · | Acquired | (price as of 2026-10-05) |
| May 31, 2024 | CYTK | A | 34,684 | · | · | 34,684 Direct | · | Acquired | (price as of 2026-10-05) |
| March 27, 2024 | VIR | S | 6,008 | $9.89 | $59,419 | 100,492 Direct | -5.64% | Disposed | 12.1% (price as of 2026-10-05) |
| Feb. 22, 2024 | VIR | A | 40,000 | · | · | 106,500 Direct | +60.15% | Acquired | (price as of 2026-10-05) |
| Feb. 22, 2024 | VIR | A | 80,000 | · | · | 80,000 Direct | · | Acquired | (price as of 2026-10-05) |
| March 27, 2023 | VIR | A | 133,000 | · | · | 133,000 Direct | · | Acquired | (price as of 2026-10-05) |
| March 27, 2023 | VIR | A | 66,500 | · | · | 66,500 Direct | · | Acquired | (price as of 2026-10-05) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| July 1, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $48.51 | May 30, 2034 | 1,112 | Disposed |
| June 29, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 823 | Disposed |
| June 29, 2026 | CYTK | Incentive Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 188 | Disposed |
| June 29, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $48.51 | May 30, 2034 | 1,113 | Disposed |
| June 29, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 822 | Disposed |
| June 29, 2026 | CYTK | Incentive Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 188 | Disposed |
| June 24, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $48.51 | May 30, 2034 | 1,113 | Disposed |
| June 24, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 822 | Disposed |
| June 24, 2026 | CYTK | Incentive Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 188 | Disposed |
| June 24, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $48.51 | May 30, 2034 | 1,113 | Disposed |
| June 24, 2026 | CYTK | Incentive Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 2,817 | Disposed |
| June 24, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 9,307 | Disposed |
| June 24, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $48.51 | May 30, 2034 | 23,370 | Disposed |
| June 5, 2026 | TNGX | Stock Option (Right to Buy) | Common Stock | $20.22 | June 5, 2036 | 3,570 | Acquired |
| April 29, 2026 | TNGX | Stock Option (Right to Buy) | Common Stock | $22.06 | April 29, 2036 | 5,200 | Acquired |
| March 15, 2026 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $60.06 | March 14, 2036 | 29,480 | Acquired |
| March 15, 2026 | CYTK | Incentive Stock Option (Right to Buy) | Common Stock | $60.06 | March 14, 2036 | 1,665 | Acquired |
| Jan. 2, 2026 | TNGX | Stock Option (Right to Buy) | Common Stock | $8.93 | Jan. 2, 2036 | 60,000 | Acquired |
| March 14, 2025 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 41,326 | Acquired |
| March 14, 2025 | CYTK | Incentive Stock Option (Right to Buy) | Common Stock | $44.36 | March 13, 2035 | 9,016 | Acquired |
| May 31, 2024 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock | $48.51 | May 30, 2034 | 53,417 | Acquired |
| Feb. 22, 2024 | VIR | Stock Option (Right to Buy) | Common Stock | $10.11 | Feb. 21, 2034 | 80,000 | Acquired |
| March 27, 2023 | VIR | Stock Option (Right to Buy) | Common Stock | $23.01 | March 26, 2033 | 133,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $572,918 | · | · | · | $295,608 | · | $17,522 | $3,770,807 |
| 2024 | $550,000 | $80,000 | $3,352,526 | $1,752,473 | $177,522 | · | $86,410 | $5,918,931 |
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2024 | $184,527 | $500,000 | $404,400 | $616,640 | · | · | $33,990 | $1,739,557 |
| 2023 | $402,865 | · | $1,530,165 | $2,472,231 | $293,423 | · | $149,690 | $4,848,374 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.