Chen Bihua
Activist
First SEC filing: Oct. 24, 2025 · Latest: Oct. 24, 2025
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
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 | BBOT | J | 130,865 | · | · | 6,083,221 Indirect | +2.20% | Acquired | (price as of 2026-10-02) |
| July 1, 2026 | BBOT | J | 1,704,862 | · | · | 5,010,332 Indirect | +51.58% | Acquired | (price as of 2026-10-02) |
| July 1, 2026 | BBOT | J | 2,692,459 | · | · | 4,879,995 Indirect | +123.08% | Acquired | (price as of 2026-10-02) |
| July 1, 2026 | BBOT | J | 4,528,186 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| June 16, 2026 | BBOT | A | 31,675 | · | · | 31,675 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | M | 4,172,126 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | D | 307,874 | · | · | 4,172,126 Indirect | -6.87% | Disposed | (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | A | 284,571 | · | · | 5,952,356 Indirect | +5.02% | Acquired | (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | A | 1,762,760 | · | · | 3,305,470 Indirect | +114.26% | Acquired | (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | A | 1,905,046 | · | · | 1,905,046 Indirect | · | Acquired | (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | A | 5,598,425 | $10.72 | $60,015,116 | 5,667,785 Indirect | +8071.55% | Acquired | -63.7% (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | A | 639,110 | $10.72 | $6,851,259 | 1,542,710 Indirect | +70.73% | Acquired | -63.7% (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | A | 760,496 | $10.72 | $8,152,517 | 2,187,536 Indirect | +53.29% | Acquired | -63.7% (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | D | 152,940 | · | · | 4,528,186 Indirect | -3.27% | Disposed | (price as of 2026-10-02) |
| Aug. 11, 2025 | BBOT | M | 4,172,126 | · | · | 4,681,126 Indirect | +819.67% | Acquired | (price as of 2026-10-02) |
| Feb. 8, 2025 | BBOT | J | 30,000 | · | · | 4,480,000 Indirect | -0.67% | Disposed | (price as of 2026-10-02) |
| Feb. 13, 2024 | BBOT | P | 903,600 | $10.00 | $9,036,000 | 903,600 Indirect | · | Acquired | -61.1% (price as of 2026-10-02) |
| Feb. 13, 2024 | BBOT | P | 1,427,040 | $10.00 | $14,270,400 | 1,427,040 Indirect | · | Acquired | -61.1% (price as of 2026-10-02) |
| Feb. 13, 2024 | BBOT | P | 69,360 | $10.00 | $693,600 | 69,360 Indirect | · | Acquired | -61.1% (price as of 2026-10-02) |
| Feb. 13, 2024 | BBOT | A | 509,000 | $10.00 | $5,090,000 | 509,000 Indirect | · | Acquired | -61.1% (price as of 2026-10-02) |
| June 30, 2023 | MLTX | P | 800,000 | $50.00 | $40,000,000 | 4,927,100 Indirect | +19.38% | Acquired | -77.2% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 85 | $72.46 | $6,159 | 4,127,100 Indirect | 0.00% | Acquired | -84.3% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 15 | $70.62 | $1,059 | 4,127,015 Indirect | 0.00% | Acquired | -83.8% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 16 | $65.32 | $1,045 | 4,127,000 Indirect | 0.00% | Acquired | -82.5% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 95 | $64.44 | $6,122 | 4,126,984 Indirect | 0.00% | Acquired | -82.3% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 139 | $63.85 | $8,875 | 4,126,889 Indirect | 0.00% | Acquired | -82.1% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 136 | $62.20 | $8,459 | 4,126,750 Indirect | 0.00% | Acquired | -81.7% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 417 | $60.21 | $25,108 | 4,126,614 Indirect | +0.01% | Acquired | -81.0% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 1,302 | $58.98 | $76,792 | 4,126,197 Indirect | +0.03% | Acquired | -80.7% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 295 | $57.63 | $17,001 | 4,124,895 Indirect | +0.01% | Acquired | -80.2% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 1,894 | $56.89 | $107,750 | 4,124,600 Indirect | +0.05% | Acquired | -79.9% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 1,453 | $55.83 | $81,121 | 4,122,706 Indirect | +0.04% | Acquired | -79.6% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 18,949 | $54.92 | $1,040,679 | 4,121,253 Indirect | +0.46% | Acquired | -79.2% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 21,823 | $53.98 | $1,178,006 | 4,102,304 Indirect | +0.53% | Acquired | -78.9% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 4,725 | $52.81 | $249,527 | 4,080,481 Indirect | +0.12% | Acquired | -78.4% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 8,697 | $52.01 | $452,331 | 4,075,756 Indirect | +0.21% | Acquired | -78.1% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 17,662 | $50.77 | $896,700 | 4,067,059 Indirect | +0.44% | Acquired | -77.5% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 59,787 | $49.82 | $2,978,588 | 4,049,397 Indirect | +1.50% | Acquired | -77.1% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 37,783 | $48.93 | $1,848,722 | 3,989,610 Indirect | +0.96% | Acquired | -76.7% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 10,946 | $44.93 | $491,804 | 3,951,827 Indirect | +0.28% | Acquired | -74.6% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 31,558 | $44.23 | $1,395,810 | 3,940,881 Indirect | +0.81% | Acquired | -74.2% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 66,087 | $43.30 | $2,861,567 | 3,909,323 Indirect | +1.72% | Acquired | -73.6% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 61,042 | $42.12 | $2,571,089 | 3,843,236 Indirect | +1.61% | Acquired | -72.9% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 50,642 | $41.03 | $2,077,841 | 3,782,194 Indirect | +1.36% | Acquired | -72.2% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 38,623 | $39.87 | $1,539,899 | 3,731,552 Indirect | +1.05% | Acquired | -71.4% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 10,593 | $39.17 | $414,928 | 3,692,929 Indirect | +0.29% | Acquired | -70.9% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 3,755 | $38.18 | $143,366 | 3,682,336 Indirect | +0.10% | Acquired | -70.1% (price as of 2026-10-02) |
| June 26, 2023 | MLTX | P | 1,481 | $36.91 | $54,664 | 3,678,581 Indirect | +0.04% | Acquired | -69.1% (price as of 2026-10-02) |
| March 21, 2023 | MLTX | P | 238,511 | $21.70 | $5,175,689 | 3,677,100 Indirect | +6.94% | Acquired | -47.4% (price as of 2026-10-02) |
| March 20, 2023 | MLTX | P | 78,008 | $21.08 | $1,644,409 | 3,438,589 Indirect | +2.32% | Acquired | -45.9% (price as of 2026-10-02) |
| March 20, 2023 | MLTX | P | 63,700 | $20.42 | $1,300,754 | 3,360,581 Indirect | +1.93% | Acquired | -44.1% (price as of 2026-10-02) |
| March 20, 2023 | MLTX | P | 446,881 | $19.36 | $8,651,616 | 3,296,881 Indirect | +15.68% | Acquired | -41.1% (price as of 2026-10-02) |
| June 22, 2022 | ERAS | A | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 5, 2022 | MLTX | C | 2,785,000 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| April 5, 2022 | MLTX | P | 2,850,000 | $10.00 | $28,500,000 | 2,850,000 Indirect | · | Acquired | 14.1% (price as of 2026-10-02) |
| April 5, 2022 | MLTX | C | 2,785,000 | · | · | 3,215,000 Indirect | +647.67% | Acquired | (price as of 2026-10-02) |
| Aug. 10, 2021 | ERAS | P | 200,000 | $22.10 | $4,420,000 | 10,505,553 Indirect | +1.94% | Acquired | -33.3% (price as of 2026-10-02) |
| July 26, 2021 | ERAS | S | 200,000 | $18.76 | $3,752,000 | 10,305,553 Indirect | -1.90% | Disposed | -21.4% (price as of 2026-10-02) |
| Oct. 22, 2020 | MLTX | P | 430,000 | $10.00 | $4,300,000 | 430,000 Indirect | · | Acquired | 14.1% (price as of 2026-10-02) |
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 16, 2026 | BBOT | Stock Option (Right to Buy) | Common Stock | $7.73 | June 15, 2036 | 31,675 | Acquired |
| Aug. 11, 2025 | BBOT | Class B ordinary shares | Class A ordinary shares | · | · | 4,172,126 | Disposed |
| Aug. 11, 2025 | BBOT | Class B ordinary shares | Class A ordinary shares | · | · | 307,874 | Disposed |
| Feb. 8, 2025 | BBOT | Class B Ordinary Shares | Class A Ordinary Shares | · | · | 30,000 | Disposed |
| June 22, 2022 | ERAS | Stock Option (right to buy) | Common Stock | $5.35 | June 21, 2032 | 40,000 | Acquired |
| April 5, 2022 | MLTX | Class B Ordinary Shares | Class A Ordinary Shares | · | · | 2,785,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.