Chen Bihua

CIK 1599214 · View on SEC EDGAR ↗

Activist

First SEC filing: Oct. 24, 2025 · Latest: Oct. 24, 2025

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 19 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

19 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Feb. 13, 2024 BBOT P 903,600 $10.00 $9,036,000 903,600 Indirect — Acquired -4.1% (price as of 2026-08-20)
Feb. 13, 2024 BBOT P 1,427,040 $10.00 $14,270,400 1,427,040 Indirect — Acquired -4.1% (price as of 2026-08-20)
Feb. 13, 2024 BBOT P 69,360 $10.00 $693,600 69,360 Indirect — Acquired -4.1% (price as of 2026-08-20)
June 30, 2023 MLTX P 800,000 $50.00 $40,000,000 4,927,100 Indirect +19.38% Acquired -67.3% (price as of 2026-08-20)
June 26, 2023 MLTX P 85 $72.46 $6,159 4,127,100 Indirect 0.00% Acquired -77.4% (price as of 2026-08-20)
June 26, 2023 MLTX P 15 $70.62 $1,059 4,127,015 Indirect 0.00% Acquired -76.8% (price as of 2026-08-20)
June 26, 2023 MLTX P 16 $65.32 $1,045 4,127,000 Indirect 0.00% Acquired -74.9% (price as of 2026-08-20)
June 26, 2023 MLTX P 95 $64.44 $6,122 4,126,984 Indirect 0.00% Acquired -74.6% (price as of 2026-08-20)
June 26, 2023 MLTX P 139 $63.85 $8,875 4,126,889 Indirect 0.00% Acquired -74.4% (price as of 2026-08-20)
June 26, 2023 MLTX P 136 $62.20 $8,459 4,126,750 Indirect 0.00% Acquired -73.7% (price as of 2026-08-20)
June 26, 2023 MLTX P 417 $60.21 $25,108 4,126,614 Indirect +0.01% Acquired -72.8% (price as of 2026-08-20)
June 26, 2023 MLTX P 1,302 $58.98 $76,792 4,126,197 Indirect +0.03% Acquired -72.3% (price as of 2026-08-20)
June 26, 2023 MLTX P 295 $57.63 $17,001 4,124,895 Indirect +0.01% Acquired -71.6% (price as of 2026-08-20)
June 26, 2023 MLTX P 1,894 $56.89 $107,750 4,124,600 Indirect +0.05% Acquired -71.2% (price as of 2026-08-20)
June 26, 2023 MLTX P 1,453 $55.83 $81,121 4,122,706 Indirect +0.04% Acquired -70.7% (price as of 2026-08-20)
June 26, 2023 MLTX P 18,949 $54.92 $1,040,679 4,121,253 Indirect +0.46% Acquired -70.2% (price as of 2026-08-20)
June 26, 2023 MLTX P 21,823 $53.98 $1,178,006 4,102,304 Indirect +0.53% Acquired -69.7% (price as of 2026-08-20)
June 26, 2023 MLTX P 4,725 $52.81 $249,527 4,080,481 Indirect +0.12% Acquired -69.0% (price as of 2026-08-20)
June 26, 2023 MLTX P 8,697 $52.01 $452,331 4,075,756 Indirect +0.21% Acquired -68.5% (price as of 2026-08-20)
June 26, 2023 MLTX P 17,662 $50.77 $896,700 4,067,059 Indirect +0.44% Acquired -67.8% (price as of 2026-08-20)
June 26, 2023 MLTX P 59,787 $49.82 $2,978,588 4,049,397 Indirect +1.50% Acquired -67.2% (price as of 2026-08-20)
June 26, 2023 MLTX P 37,783 $48.93 $1,848,722 3,989,610 Indirect +0.96% Acquired -66.6% (price as of 2026-08-20)
June 26, 2023 MLTX P 10,946 $44.93 $491,804 3,951,827 Indirect +0.28% Acquired -63.6% (price as of 2026-08-20)
June 26, 2023 MLTX P 31,558 $44.23 $1,395,810 3,940,881 Indirect +0.81% Acquired -63.0% (price as of 2026-08-20)
June 26, 2023 MLTX P 66,087 $43.30 $2,861,567 3,909,323 Indirect +1.72% Acquired -62.2% (price as of 2026-08-20)
June 26, 2023 MLTX P 61,042 $42.12 $2,571,089 3,843,236 Indirect +1.61% Acquired -61.1% (price as of 2026-08-20)
June 26, 2023 MLTX P 50,642 $41.03 $2,077,841 3,782,194 Indirect +1.36% Acquired -60.1% (price as of 2026-08-20)
June 26, 2023 MLTX P 38,623 $39.87 $1,539,899 3,731,552 Indirect +1.05% Acquired -59.0% (price as of 2026-08-20)
June 26, 2023 MLTX P 10,593 $39.17 $414,928 3,692,929 Indirect +0.29% Acquired -58.2% (price as of 2026-08-20)
June 26, 2023 MLTX P 3,755 $38.18 $143,366 3,682,336 Indirect +0.10% Acquired -57.1% (price as of 2026-08-20)
June 26, 2023 MLTX P 1,481 $36.91 $54,664 3,678,581 Indirect +0.04% Acquired -55.7% (price as of 2026-08-20)
March 21, 2023 MLTX P 238,511 $21.70 $5,175,689 3,677,100 Indirect +6.94% Acquired -24.6% (price as of 2026-08-20)
March 20, 2023 MLTX P 78,008 $21.08 $1,644,409 3,438,589 Indirect +2.32% Acquired -22.4% (price as of 2026-08-20)
March 20, 2023 MLTX P 63,700 $20.42 $1,300,754 3,360,581 Indirect +1.93% Acquired -19.9% (price as of 2026-08-20)
March 20, 2023 MLTX P 446,881 $19.36 $8,651,616 3,296,881 Indirect +15.68% Acquired -15.5% (price as of 2026-08-20)
April 5, 2022 MLTX P 2,850,000 $10.00 $28,500,000 2,850,000 Indirect — Acquired 63.6% (price as of 2026-08-20)
Oct. 22, 2020 MLTX P 430,000 $10.00 $4,300,000 430,000 Indirect — Acquired 63.6% (price as of 2026-08-20)

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 (31,675) $7.73 June 15, 2036 31,675 Acquired
Aug. 11, 2025 BBOT Class B ordinary shares Class A ordinary shares (4,172,126) — — 4,172,126 Disposed
Aug. 11, 2025 BBOT Class B ordinary shares Class A ordinary shares (307,874) — — 307,874 Disposed
Feb. 8, 2025 BBOT Class B Ordinary Shares Class A Ordinary Shares (30,000) — — 30,000 Disposed
April 5, 2022 MLTX Class B Ordinary Shares Class A Ordinary Shares (2,785,000) — — 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.

Date Ticker Security Shares Ownership
Feb. 9, 2024 BBOT Class B Ordinary Shares→ Class A Ordinary Shares — Indirect
Oct. 19, 2020 MLTX Class B Ordinary Shares→ Class A Ordinary Shares — Indirect