NASDAQ
Total Transactions
8
2 buys /6 sells
Shares Acquired
20,858
Transactions: 2•Avg: 10,429
Shares Disposed
42,716
Transactions: 6•Avg: 7,119.33
Net Activity
-21,858
Net Selling•Ratio: 33.33%
Q4 2025(Current) | 20,858 | 42,716 | -21,858 | 33.33% |
Q3 2025 | 20,291 | 1,500 | +18,791 | 66.67% |
Q2 2025 | 299,144 | 202,696 | +96,448 | 216.67% |
Q1 2025 | 1,282,280 | 680,141 | +602,139 | 59.09% |
Q4 2024 | 47,033 | 347,976 | -300,943 | 38.89% |
This table shows insider trading activity by quarter. A ratio > 100% indicates insiders acquired more shares than they disposed of during the period, which is generally considered a bullish signal.
• Most recent data for Q4 2025
Acquired vs Disposed Shares
Net Distribution: 21,858 shares•Acquired/Disposed Ratio: 33.33%
Net Activity | |||||
|---|---|---|---|---|---|
ZJY Zhang Jack Y. | Director, 10 percent owner, officer: ceo & chief scientific officer | 21 | 1,317,785 | 1,200,122 | +117,663 |
PWJ PETERS WILLIAM J | Director, officer: cfo, evp & treasurer | 13 | 129,702 | 35,698 | +94,004 |
LY Liawatidewi Yakob | Director, officer: evp corp admin center | 8 | 70,304 | 14,331 | +55,973 |
ZR Zhou Rong | Officer: senior evp, production center | 17 | 102,022 | 54,329 | +47,693 |
GDR Gaugh David Russell | Director | 3 | 20,291 | 0 | +20,291 |
This table shows the trading activity of the most active company insiders. Positive net activity (buying more than selling) is often considered a bullish signal.
2025-12-11 | Director | Sale | 1,737 | $25.69 | $44,620.06 | 73,794 | |
2025-12-12 | Director | Sale | 2,426 | $25.92 | $62,888.23 | 71,368 | |
2025-11-25 | Director | Purchase | 4,179 | $16.69 | $69,747.51 | 39,362 | |
2025-11-25 | Director | Sale | 4,179 | $27.1 | $113,253.41 | 35,183 | |
2025-11-25 | Director | Sale | 4,179 | $16.69 | $69,747.51 | - |
This table displays recent Form 4 filings showing transactions by company insiders. SEC rules require insiders to report their transactions within two business days.
PFF Petersen Floyd F. | Director | Dec 15, 2025 | |
PFF Petersen Floyd F. | Director | Dec 15, 2025 | |
PRK PRINS RICHARD K | Director | Nov 25, 2025 | |
PRK PRINS RICHARD K | Director | Nov 25, 2025 | |
PRK PRINS RICHARD K | Director | Nov 25, 2025 |
Net change in shares shown on right
No price data available for this timeframe.