| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
CFO | VP Finance/ CFO | Executive V.p. Finance & CFO +1 more
2 companies
Chris Siu is CFO at AEHR and has filed Form 4s across 2 companies. Chris Siu's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $6.8M at current prices.
The biggest single holding is AEHR (~$4.9M) as CFO. The AEHR filings lean toward selling, a net 2,392 shares.
Chris Siu has 47 Form 4 filings on record from May 2019 to October 2026, across 2 companies: CFO at Aehr Test Systems (AEHR), 2023–2026; Chief Accounting Officer & SVP at Ultra Clean (UCTT), 2019–2022.
The 64 reported transactions were 39 tax withholdings, 13 stock awards, 6 other transactions and 5 open-market sales, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 3 sales worth about $393K.
The largest open-market sale was 2,070 shares of AEHR at an average $107.06 on May 14, 2026, about $222K.
Neither of the two sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| May 14, 2026 | AEHR Aehr Test Systems, Inc. | CFO | Sell | 2,070 | $107.06 | $221,608.00 | -2.7% | +21.5% | - | |
| Dec 6, 2023 | AEHR Aehr Test Systems | VP Finance/ CFO | Sell | 322 | $25.27 | $8,135.65 | -2.1% | -31.6% | -53.9% | |
| Aug 4, 2020 | UCTT Ultra Clean Holdings, Inc. | Chief Accounting Officer & SVP | Sell | 5,413 | $30.24 | $163,710.00 | -11.8% | - | - |