As of September 12, 2026, the three largest insider holders of SMCI are Liang Chiu-Chu Sara Liu (Vp Of Operations Treasurer, 40.43Mn shares), Charles Liang (President And Ceo, 40.43Mn shares), Charles Liang (President And Ceo, 25.33Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Charles Liang | President And Ceo | 0 | 437,506 | 437,506 | 15.6% | 08 Sep, 2026 |
| 2 | Liang Chiu-Chu Sara Liu | Senior Vice President | 437,506 | 0 | 437,506 | 15.6% | 08 Sep, 2026 |
| 3 | Shiu Leung Chan | Director | 429,170 | 0 | 429,170 | 15.3% | 05 Feb, 2024 |
| 4 | Tally C Liu | Director | 288,738 | 0 | 288,738 | 10.3% | 02 Jul, 2026 |
| 5 | Sherman Tuan | Director | 207,156 | 0 | 207,156 | 7.4% | 01 Dec, 2025 |
| 6 | Daniel W Fairfax | Director | 198,330 | 0 | 198,330 | 7.1% | 02 Jul, 2024 |
| 7 | Jin Xiao | Sr. Corporate Vp, Engineering | 194,586 | 0 | 194,586 | 6.9% | 19 Aug, 2026 |
| 8 | David E Weigand | Svp, Chief Financial Officer | 134,730 | 0 | 134,730 | 4.8% | 19 Aug, 2026 |
| 9 | George Kao | Svp, Operations | 134,691 | 0 | 134,691 | 4.8% | 26 Nov, 2025 |
| 10 | Yih-Shyan Wally Liaw | Secretary V P Of Intl Sales | 94,492 | 0 | 94,492 | 3.4% | 19 Feb, 2026 |
| 11 | Kenneth Cheung | Svp, Chief Accounting Officer | 63,772 | 0 | 63,772 | 2.3% | 19 Aug, 2026 |
| 12 | Judy L. Lin | Director | 60,323 | 0 | 60,323 | 2.1% | 02 Jul, 2026 |
| 13 | Don W Clegg | Svp, Worldwide Sales | 50,540 | 0 | 50,540 | 1.8% | 12 May, 2026 |
| 14 | Vikranth Malyala | Svp, Chief Business Officer | 47,877 | 0 | 47,877 | 1.7% | 19 Aug, 2026 |
| 15 | Susan Mogensen | Director | 8,663 | 0 | 8,663 | 0.3% | 02 Jul, 2026 |
| 16 | Scott Angel | Director | 7,055 | 0 | 7,055 | 0.3% | 02 Jul, 2026 |
| 17 | Robert L Blair | Director | 6,963 | 0 | 6,963 | 0.2% | 02 Jul, 2026 |
| 18 | Matthew Thauberger | Chief Revenue Officer | 6,487 | 0 | 6,487 | 0.2% | 19 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 03 Sep, 2026 | Liang Chiu-Chu Sara Liu | Director, TenPercentOwner | Disposed S | 42,565 | $36.60 | $1.56Mn | 594,941 | Direct |
| 03 Sep, 2026 | Charles Liang | President And Ceo | Disposed S | 42,565 | $36.60 | $1.56Mn | 594,941 | Indirect |
| 03 Sep, 2026 | Charles Liang | President And Ceo | Disposed S | 57,435 | $37.62 | $2.16Mn | 537,506 | Indirect |
| 03 Sep, 2026 | Liang Chiu-Chu Sara Liu | Director, TenPercentOwner | Disposed S | 57,435 | $37.62 | $2.16Mn | 537,506 | Direct |
| 04 Sep, 2026 | Charles Liang | President And Ceo | Disposed S | 100,000 | $40.00 | $4.00Mn | 437,506 | Indirect |
| 04 Sep, 2026 | Liang Chiu-Chu Sara Liu | Director, TenPercentOwner | Disposed S | 100,000 | $40.00 | $4.00Mn | 437,506 | Direct |
| 27 Aug, 2026 | Vikranth Malyala | Svp, Chief Business Officer | Acquired A | 8,060 | $0.00 | $0 | 8,060 | Direct |
| 27 Aug, 2026 | David E Weigand | Svp, Chief Financial Officer | Acquired A | 24,093 | $0.00 | $0 | 24,093 | Direct |
| 27 Aug, 2026 | Jin Xiao | Sr. Corporate Vp, Engineering | Acquired A | 2,112 | $0.00 | $0 | 2,112 | Direct |
| 17 Aug, 2026 | Liang Chiu-Chu Sara Liu | Director, TenPercentOwner | Acquired M | 3,650 | — | — | 639,476 | Direct |
| 17 Aug, 2026 | David E Weigand | Svp, Chief Financial Officer | Acquired M | 6,500 | — | — | 138,038 | Direct |
| 17 Aug, 2026 | Matthew Thauberger | Chief Revenue Officer | Acquired M | 2,250 | — | — | 7,632 | Direct |
| 17 Aug, 2026 | Kenneth Cheung | Svp, Chief Accounting Officer | Acquired M | 2,250 | — | — | 64,580 | Direct |
| 17 Aug, 2026 | Vikranth Malyala | Svp, Chief Business Officer | Acquired M | 6,000 | — | — | 50,930 | Direct |
| 17 Aug, 2026 | Charles Liang | President And Ceo | Acquired M | 3,650 | — | — | 639,476 | Indirect |
| 17 Aug, 2026 | Jin Xiao | Sr. Corporate Vp, Engineering | Acquired M | 4,000 | — | — | 196,022 | Direct |
| 17 Aug, 2026 | Charles Liang | President And Ceo | Disposed F | 1,970 | $38.28 | $75.41K | 637,506 | Indirect |
| 17 Aug, 2026 | Jin Xiao | Sr. Corporate Vp, Engineering | Disposed F | 1,436 | $38.28 | $54.97K | 194,586 | Direct |
| 17 Aug, 2026 | David E Weigand | Svp, Chief Financial Officer | Disposed F | 3,308 | $38.28 | $126.63K | 134,730 | Direct |
| 17 Aug, 2026 | Liang Chiu-Chu Sara Liu | Director, TenPercentOwner | Disposed F | 1,970 | $38.28 | $75.41K | 637,506 | Direct |