Super Micro Computer, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| TUAN SHERMAN | — | Sale | 48,630 | $33.00 | $1,604,790 | 207,156 | Nov 26, 2025 |
| Liang Charles | President and CEO | Gift | 5,000 | — | — | 25,672,520 | Nov 26, 2025 |
| Liu Liang Chiu-Chu Sara | — | Gift | 5,000 | — | — | 25,672,520 | Nov 26, 2025 |
| KAO GEORGE | SVP, OPERATIONS | Sale | 56,904 | $32.83 | $1,868,158 | 134,691 | Nov 24, 2025 |
| KAO GEORGE | SVP, OPERATIONS | Option Exercise | 80,000 | $2.70 | $216,000 | 134,691 | Nov 13, 2025 |
| Cheung Kenneth | SVP, Chief Accounting Officer | Option Exercise | 1,250 | — | — | 57,107 | Nov 10, 2025 |
| KAO GEORGE | SVP, OPERATIONS | Tax Withholding | 1,864 | $40.19 | $74,914 | 26,991 | Nov 10, 2025 |
| Liaw Yih-Shyan Wally | — | Option Exercise | 4,380 | — | — | 86,953 | Nov 10, 2025 |
| WEIGAND DAVID E | SVP, Chief Financial Officer | Tax Withholding | 757 | $40.19 | $30,424 | 108,638 | Nov 10, 2025 |
| Liu Liang Chiu-Chu Sara | — | Option Exercise | 2,110 | — | — | 608,536 | Nov 10, 2025 |
| Liang Charles | President and CEO | Tax Withholding | 1,137 | $40.19 | $45,696 | 607,399 | Nov 10, 2025 |
| CLEGG DON W | SVP, Worldwide Sales | Tax Withholding | 656 | $40.19 | $26,365 | 46,668 | Nov 10, 2025 |
| WEIGAND DAVID E | SVP, Chief Financial Officer | Tax Withholding | 6,602 | $50.37 | $332,543 | 106,586 | Oct 30, 2025 |
| Liu Liang Chiu-Chu Sara | — | Tax Withholding | 3,231 | $50.37 | $162,745 | 606,426 | Oct 30, 2025 |
| CLEGG DON W | SVP, Worldwide Sales | Tax Withholding | 3,047 | $50.37 | $153,477 | 45,532 | Oct 30, 2025 |
| KAO GEORGE | SVP, OPERATIONS | Option Exercise | 5,000 | — | — | 26,820 | Oct 30, 2025 |
| Liaw Yih-Shyan Wally | — | Option Exercise | 5,000 | — | — | 82,963 | Oct 30, 2025 |
| Liang Charles | President and CEO | Tax Withholding | 3,231 | $50.37 | $162,745 | 606,426 | Oct 30, 2025 |
| WEIGAND DAVID E | SVP, Chief Financial Officer | Sale | 25,000 | $45.14 | $1,128,500 | 100,188 | Sep 15, 2025 |
| WEIGAND DAVID E | SVP, Chief Financial Officer | Sale | 300 | $40.85 | $12,255 | 100,188 | Sep 3, 2025 |
| KAO GEORGE | SVP, OPERATIONS | Option Exercise | 40,000 | $2.70 | $108,000 | 61,820 | Aug 22, 2025 |
| Liang Charles | President and CEO | Tax Withholding | 1,137 | $44.60 | $50,710 | 603,657 | Aug 10, 2025 |
| Liu Liang Chiu-Chu Sara | — | Option Exercise | 2,110 | — | — | 604,794 | Aug 10, 2025 |
| CLEGG DON W | SVP, Worldwide Sales | Tax Withholding | 650 | $44.60 | $28,990 | 42,579 | Aug 10, 2025 |
| WEIGAND DAVID E | SVP, Chief Financial Officer | Tax Withholding | 1,356 | $44.60 | $60,478 | 99,460 | Aug 10, 2025 |
| Cheung Kenneth | SVP, Chief Accounting Officer | Option Exercise | 1,250 | — | — | 55,299 | Aug 10, 2025 |
| Liaw Yih-Shyan Wally | — | Option Exercise | 4,380 | — | — | 77,877 | Aug 10, 2025 |
| KAO GEORGE | SVP, OPERATIONS | Option Exercise | 1,830 | — | — | 22,750 | Aug 10, 2025 |
| Liu Liang Chiu-Chu Sara | — | Sale | 200,000 | $60.00 | $12,000,000 | 40,426,120 | Jul 28, 2025 |
| Liang Charles | President and CEO | Sale | 200,000 | $60.00 | $12,000,000 | 40,426,120 | Jul 28, 2025 |
| Liu Liang Chiu-Chu Sara | — | Tax Withholding | 442 | $47.20 | $20,862 | 2,449 | Jul 1, 2025 |
| Liang Charles | President and CEO | Tax Withholding | 442 | $47.20 | $20,862 | 2,449 | Jul 1, 2025 |
| KAO GEORGE | SVP, OPERATIONS | Option Exercise | 603 | — | — | 21,227 | Jul 1, 2025 |
| Liaw Yih-Shyan Wally | — | Tax Withholding | 287 | $47.20 | $13,546 | 73,117 | Jul 1, 2025 |
| WEIGAND DAVID E | SVP, Chief Financial Officer | Tax Withholding | 2,600 | $47.20 | $122,720 | 96,143 | Jul 1, 2025 |
| CLEGG DON W | SVP, Worldwide Sales | Tax Withholding | 287 | $47.20 | $13,546 | 39,814 | Jul 1, 2025 |
| Angel Scott | — | Option Exercise | 1,672 | — | — | 1,672 | Jun 30, 2025 |
| BLAIR ROBERT L | — | Option Exercise | 1,580 | — | — | 1,580 | Jun 30, 2025 |
| Lin Judy L. | — | Option Exercise | 1,580 | — | — | 54,940 | Jun 30, 2025 |
| LIU TALLY C | — | Option Exercise | 1,580 | — | — | 285,300 | Jun 30, 2025 |
| Mogensen Susan | — | Option Exercise | 2,960 | — | — | 3,280 | Jun 30, 2025 |
| TUAN SHERMAN | — | Option Exercise | 3,160 | — | — | 255,786 | Jun 30, 2025 |
| Liang Charles | President and CEO | Sale | 300,000 | $45.00 | $13,500,000 | 66,903,640 | Jun 18, 2025 |
| Liu Liang Chiu-Chu Sara | — | Sale | 300,000 | $45.00 | $13,500,000 | 66,903,640 | Jun 18, 2025 |
| WEIGAND DAVID E | SVP, Chief Financial Officer | Sale | 67,000 | $44.02 | $2,949,340 | 88,599 | May 20, 2025 |
| Liang Charles | President and CEO | Other | 26,277,520 | — | — | 40,626,120 | May 20, 2025 |
| Liu Liang Chiu-Chu Sara | — | Other | 26,277,520 | — | — | 40,626,120 | May 20, 2025 |
| Liaw Yih-Shyan Wally | — | Gift | 177,600 | — | — | 14,990,450 | May 16, 2025 |
| Liang Charles | President and CEO | Sale | 184,694 | $44.98 | $8,307,536 | 67,218,946 | May 14, 2025 |
| Liu Liang Chiu-Chu Sara | — | Sale | 184,694 | $44.98 | $8,307,536 | 67,218,946 | May 14, 2025 |