| 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 |
|---|---|---|---|---|---|---|---|---|---|
Director
1 company
Tom Dang-Hsing Yiu last filed a Form 4 in June 2025, as Director at SITM. Tom Dang-Hsing Yiu's net worth is not public. Form 4 filings only show shares in the companies where this person was an insider, as of the last filing.
Our model assigns Tom Dang-Hsing Yiu a below-average insider score of 33/100, based on 5 past trades. Over a 12-month horizon, 20.0% of those trades were profitable, with an average 12-month return of -38.7%.
At the last filing, the largest reported position was 19,790 shares of SITM. The SITM filings lean toward selling, a net 13,667 shares.
Tom Dang-Hsing Yiu has 12 Form 4 filings on record from November 2019 to June 2025, all as Director at Sitime (SITM), 2019–2025.
The 13 reported transactions were 7 stock awards and 6 open-market sales.
Counted by filing, the open-market trades come to no purchases and 6 sales worth about $2.2M.
The largest open-market sale was 2,719 shares of SITM at an average $290.00 on November 24, 2021, about $789K. Twelve months later SITM was down 67%.
Neither of the two sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
Shares as reported in the last Form 4 for each company; the most recent is from June 2025. Values use today's prices. Any trades after the last filing were not reported, so current holdings may differ.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| May 22, 2025 | SITM Sitime Corp | Director | Sell | 2,115 | $200.00 | $423,000.00 | -10.3% | +8.6% | +257.1% | |
| May 30, 2024 | SITM Sitime Corp | Director | Sell | 1,333 | $127.00 | $169,291.00 | -6.7% | +9.7% | +55.3% | |
| Nov 30, 2022 | SITM Sitime Corp | Director | Sell | 2,300 | $100.00 | $230,000.00 | -11.9% | +17.7% | +4.9% | |
| Nov 24, 2021 | SITM Sitime Corp | Director | Sell | 2,719 | $290.00 | $788,510.00 | -12.8% | -39.0% | -66.8% | |
| May 26, 2021 | SITM Sitime Corp | Director | Sell | 2,200 | $96.74 | $212,828.00 | -10.3% | +105.1% | +100.5% | |
| Dec 16, 2020 | SITM Sitime Corp | Director | Sell | 3,000 | $108.95 | $326,850.00 | -12.3% | - | - |