🕵️ Super Micro Computer, Inc. ($SMCI)
SEC insider & ownership activity, last 12 months · CIK 1375365 · every row links its SEC filing
Over the last 12 months insiders sold $20.0M with no open-market buying against it. Liang Charles sold $7.7M through a 10b5-1 trading plan in 3 lots (Sep). 1 planned sale is pending, the largest $3.7M (Liu Liang Chiu-Chu Sara). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 5 sellers, $20.0M (9 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Liang Charles | 0 | – | 3 | $7.7M | Sep 4, 2026 |
| Liu Liang Chiu-Chu Sara | 0 | – | 3 | $7.7M | Sep 4, 2026 |
| George W. Kao | 0 | – | 1 | $1.9M | Nov 24, 2025 |
| Sherman Tuan | 0 | – | 1 | $1.6M | Nov 26, 2025 |
| David E. Weigand | 0 | – | 1 | $1.1M | Sep 15, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| JANE Street Group, LLC | 7.4% | 13G | Aug 13, 2026 | filing ↗ | |
| Vanguard Capital Management | 6.3% | 13G | Apr 30, 2026 | filing ↗ | |
| JANE Street Global Trading, LLC | 5.6% | 13G | Aug 13, 2026 | filing ↗ | |
| Capital Ventures International | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| Susquehanna Advisors Group, Inc. | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| G1 Execution Services, LLC | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| SIG Brokerage, LP | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| Susquehanna Fundamental Investments, LLC | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| Susquehanna Investment Group | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| Susquehanna Securities, LLC | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.1% | 13G | Jul 31, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Liu Liang Chiu-Chu Sara | $4.0M | Sep 4, 2026 | filing ↗ |
| Liu Liang Chiu-Chu Sara | $3.7M | Sep 3, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $742K | May 26, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $4.8M | May 22, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $1.8M | May 20, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $622K | May 19, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $2.0M | May 18, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $998K | May 14, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $330K | May 13, 2026 | filing ↗ |
| Yih-Shyan W. Liaw | $356K | May 11, 2026 | filing ↗ |
| Sherman Tuan | $1.6M | Nov 26, 2025 | filing ↗ |
| George W. Kao | $1.9M | Nov 24, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 11, 2026 | filing ↗ |
| Other events (8.01) | Aug 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2026 | filing ↗ |
| Earnings (2.02) | Jul 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 21, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 10, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Jun 10, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jun 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 10, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 10, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 10, 2026 | filing ↗ |
| Other events (8.01) | Jun 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 9, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 15, 2026 | filing ↗ |
| Shareholder vote (5.07) | Apr 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 15, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 20, 2026 | filing ↗ |
| Earnings (2.02) | Feb 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 3, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 26, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 21, 2026 | filing ↗ |
| Shareholder Nominations Pursuant to Exchange Act Rule 14a-11 (5.08) | Jan 21, 2026 | filing ↗ |