Winston Kung
Insider
First SEC filing: Jan. 25, 2024 · Latest: June 12, 2026
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net: $-16,026
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 |
|---|---|---|---|---|---|---|---|---|---|
| June 11, 2026 | JANX | A | 15,500 | · | · | 15,500 Direct | · | Acquired | (price as of 2026-10-06) |
| June 11, 2026 | JANX | A | 5,500 | · | · | 11,750 Direct | +88.00% | Acquired | (price as of 2026-10-06) |
| June 10, 2026 | CRBP | S 10b5-1 | 2,026 | $7.91 | $16,026 | 12,140 Direct | -14.30% | Disposed | -25.8% (price as of 2026-10-06) |
| May 19, 2026 | CRBP | A | 12,300 | · | · | 12,300 Direct | · | Acquired | (price as of 2026-10-06) |
| May 19, 2026 | CRBP | A | 3,800 | · | · | 14,166 Direct | +36.66% | Acquired | (price as of 2026-10-06) |
| Feb. 2, 2026 | AVBP | A | 140,000 | · | · | 140,000 Direct | · | Acquired | (price as of 2026-10-06) |
| June 11, 2025 | JANX | A | 3,750 | · | · | 6,250 Direct | +150.00% | Acquired | (price as of 2026-10-06) |
| June 11, 2025 | JANX | A | 11,667 | · | · | 11,667 Direct | · | Acquired | (price as of 2026-10-06) |
| May 30, 2025 | CRBP | A | 16,000 | · | · | 16,000 Direct | · | Acquired | (price as of 2026-10-06) |
| May 30, 2025 | CRBP | A | 4,800 | · | · | 10,366 Direct | +86.24% | Acquired | (price as of 2026-10-06) |
| Feb. 3, 2025 | AVBP | A | 120,000 | · | · | 120,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 16, 2024 | CRBP | A | 5,566 | · | · | 5,566 Direct | · | Acquired | (price as of 2026-10-06) |
| Aug. 16, 2024 | CRBP | A | 5,566 | · | · | 5,566 Direct | · | Acquired | (price as of 2026-10-06) |
| June 26, 2024 | JANX | A | 2,500 | · | · | 2,500 Direct | · | Acquired | (price as of 2026-10-06) |
| June 26, 2024 | JANX | A | 8,350 | · | · | 8,350 Direct | · | Acquired | (price as of 2026-10-06) |
| June 14, 2023 | JANX | A | 12,500 | · | · | 12,500 Direct | · | Acquired | (price as of 2026-10-06) |
| May 12, 2023 | PMVP | A | 150,000 | · | · | 150,000 Direct | · | Acquired | (price as of 2026-10-06) |
| Nov. 25, 2022 | PMVP | G | 2,560 | · | · | 10,600 Direct | -19.45% | Disposed | (price as of 2026-10-06) |
| Sept. 21, 2022 | JANX | A | 9,375 | · | · | 9,375 Direct | · | Acquired | (price as of 2026-10-06) |
| Sept. 21, 2022 | JANX | A | 30,000 | · | · | 30,000 Direct | · | Acquired | (price as of 2026-10-06) |
| April 20, 2022 | PMVP | M | 4,000 | · | · | 210,034 Direct | -1.87% | Disposed | (price as of 2026-10-06) |
| April 20, 2022 | PMVP | M | 4,000 | $3.22 | $12,880 | 10,600 Direct | +60.61% | Acquired | -47.7% (price as of 2026-10-06) |
| Feb. 10, 2022 | PMVP | A | 104,400 | · | · | 104,400 Direct | · | Acquired | (price as of 2026-10-06) |
| Dec. 30, 2021 | PMVP | G | 2,725 | · | · | 6,600 Direct | -29.22% | Disposed | (price as of 2026-10-06) |
| Aug. 19, 2021 | PMVP | M | 5,000 | · | · | 214,034 Direct | -2.28% | Disposed | (price as of 2026-10-06) |
| Aug. 19, 2021 | PMVP | M | 5,000 | $3.22 | $16,100 | 6,600 Direct | +312.50% | Acquired | -47.7% (price as of 2026-10-06) |
| Aug. 3, 2021 | PMVP | M | 4,500 | · | · | 219,034 Direct | -2.01% | Disposed | (price as of 2026-10-06) |
| Aug. 3, 2021 | PMVP | S 10b5-1 | 4,500 | $33.82 | $152,190 | 1,600 Direct | -73.77% | Disposed | -95.0% (price as of 2026-10-06) |
| Aug. 3, 2021 | PMVP | M | 4,500 | $3.22 | $14,490 | 6,100 Direct | +281.25% | Acquired | -47.7% (price as of 2026-10-06) |
| July 8, 2021 | PMVP | S 10b5-1 | 4,500 | $33.75 | $151,875 | 1,600 Direct | -73.77% | Disposed | -95.0% (price as of 2026-10-06) |
| July 8, 2021 | PMVP | M | 4,500 | · | · | 223,534 Direct | -1.97% | Disposed | (price as of 2026-10-06) |
| July 8, 2021 | PMVP | M | 4,500 | $3.22 | $14,490 | 6,100 Direct | +281.25% | Acquired | -47.7% (price as of 2026-10-06) |
| June 4, 2021 | PMVP | M | 4,500 | $3.22 | $14,490 | 6,100 Direct | +281.25% | Acquired | -47.7% (price as of 2026-10-06) |
| June 4, 2021 | PMVP | S 10b5-1 | 4,500 | $33.75 | $151,875 | 1,600 Direct | -73.77% | Disposed | -95.0% (price as of 2026-10-06) |
| June 4, 2021 | PMVP | M | 4,500 | · | · | 228,034 Direct | -1.94% | Disposed | (price as of 2026-10-06) |
| May 12, 2021 | PMVP | A | 50,337 | · | · | 50,337 Direct | · | Acquired | (price as of 2026-10-06) |
| May 3, 2021 | PMVP | M | 4,500 | · | · | 232,534 Direct | -1.90% | Disposed | (price as of 2026-10-06) |
| May 3, 2021 | PMVP | S 10b5-1 | 4,500 | $33.75 | $151,875 | 1,600 Direct | -73.77% | Disposed | -95.0% (price as of 2026-10-06) |
| May 3, 2021 | PMVP | M | 4,500 | $3.22 | $14,490 | 6,100 Direct | +281.25% | Acquired | -47.7% (price as of 2026-10-06) |
| Dec. 8, 2020 | PMVP | M | 1,600 | $3.22 | $5,152 | 1,600 Direct | · | Acquired | -47.7% (price as of 2026-10-06) |
| Dec. 8, 2020 | PMVP | M | 1,600 | · | · | 237,034 Direct | -0.67% | Disposed | (price as of 2026-10-06) |
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 |
|---|---|---|---|---|---|---|---|
| June 11, 2026 | JANX | Stock Option (right to buy) | Common Stock | $13.66 | June 10, 2036 | 15,500 | Acquired |
| May 19, 2026 | CRBP | Stock options (right to buy) | Common Stock | $9.15 | May 19, 2026 | 12,300 | Acquired |
| Feb. 2, 2026 | AVBP | Stock Option (right to buy) | Common Stock | $22.67 | Feb. 2, 2036 | 140,000 | Acquired |
| June 11, 2025 | JANX | Stock Option (right to buy) | Common Stock | $25.46 | June 10, 2035 | 11,667 | Acquired |
| May 30, 2025 | CRBP | Stock options (right to buy) | Common Stock | $7.42 | May 30, 2035 | 16,000 | Acquired |
| Feb. 3, 2025 | AVBP | Stock Option (right to buy) | Common Stock | $27.56 | Feb. 3, 2035 | 120,000 | Acquired |
| Aug. 16, 2024 | CRBP | Stock options (right to buy) | Common Stock | $53.52 | Aug. 16, 2034 | 5,566 | Acquired |
| June 26, 2024 | JANX | Stock Option (right to buy) | Common Stock | $39.80 | June 25, 2034 | 8,350 | Acquired |
| June 14, 2023 | JANX | Stock Option (right to buy) | Common Stock | $13.22 | June 13, 2033 | 12,500 | Acquired |
| May 12, 2023 | PMVP | Employee Stock Option (right to buy) | Common Stock | $5.70 | May 12, 2033 | 150,000 | Acquired |
| Sept. 21, 2022 | JANX | Stock Option (right to buy) | Common Stock | $13.54 | Sept. 20, 2032 | 9,375 | Acquired |
| Sept. 21, 2022 | JANX | Stock Option (right to buy) | Common Stock | $13.54 | Sept. 20, 2032 | 30,000 | Acquired |
| April 20, 2022 | PMVP | Stock Option (right to buy) | Common Stock | $3.22 | Feb. 21, 2028 | 4,000 | Disposed |
| Feb. 10, 2022 | PMVP | Employee Stock Option (right to buy) | Common Stock | $16.29 | Feb. 10, 2032 | 104,400 | Acquired |
| Aug. 19, 2021 | PMVP | Stock Option (right to buy) | Common Stock | $3.22 | Feb. 21, 2028 | 5,000 | Disposed |
| Aug. 3, 2021 | PMVP | Stock Option (right to buy) | Common Stock | $3.22 | Feb. 21, 2028 | 4,500 | Disposed |
| July 8, 2021 | PMVP | Stock Option (right to buy) | Common Stock | $3.22 | Feb. 21, 2028 | 4,500 | Disposed |
| June 4, 2021 | PMVP | Stock Option (right to buy) | Common Stock | $3.22 | Feb. 21, 2028 | 4,500 | Disposed |
| May 12, 2021 | PMVP | Employee Stock Option (right to buy) | Common Stock | $28.33 | May 11, 2031 | 50,337 | Acquired |
| May 3, 2021 | PMVP | Stock Option (right to buy) | Common Stock | $3.22 | Feb. 21, 2028 | 4,500 | Disposed |
| Dec. 8, 2020 | PMVP | Stock Option (right to buy) | Common Stock | $3.22 | Feb. 21, 2028 | 1,600 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.
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 |
|---|---|---|---|---|---|---|---|---|
| 2022 | $461,455 | · | · | $1,177,183 | $129,838 | · | · | $1,768,476 |
| 2021 | $448,017 | · | · | $992,142 | $225,100 | · | · | $1,665,259 |
| 2020 | $427,535 | · | · | · | $181,397 | · | · | $825,365 |
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2023 | · | · | · | · | · | · | · | · |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.