Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of Super Micro Computer, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001375365.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
11 May 2026
- Public ticker
- SMCI on Nasdaq
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest 13D/G holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest parsed ownership date
- 11 May 2026
- Issuer CIK
- 0001375365
- Issuer location
- San Jose, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Super Micro Computer, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
11 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 6.3%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 6.3%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
6.3%
SUSQUEHANNA SECURITIES, LLC
4.5%
Vikranth Malyala
0.01%
BlackRock, Inc.
7.2%
VANGUARD PORTFOLIO MANAGEMENT LLC
4.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
6.3%
|
$863,681,014
37,930,655 shares
|
$0 | 31 Mar 2026 |
| SUSQUEHANNA SECURITIES, LLC |
13D/G
SIG Brokerage, LP
|
4.5%
|
$938,650,356
26,073,621 shares
|
$0 | 31 Dec 2024 |
| Vikranth Malyala |
3/4/5
SVP, Chief Business Officer
|
0.01%
|
$793,762
34,860 shares
|
— | 11 May 2026 |
| BlackRock, Inc. |
13F
Company
|
7.2%
|
$987,320,385
43,360,579 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
Company
|
4.9%
|
$673,294,783
29,569,380 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
3.7%
|
$501,338,498
22,017,501 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
2.4%
|
$321,136,588
14,155,928 shares
|
— | 31 Mar 2026 |
| UBS Group AG |
13F
Company
|
2%
|
$274,913,072
12,073,477 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$58,363,992.
Buys
$0
Insiders: 0
Sells
$58,363,992
Insiders: 5
Net
-$58,363,992
Shares: -1,195,534
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 1,195,534
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 130,534 | $0 | $4,601,511 | -$4,601,511 |
| 9-12 | 0 | 1,065,000 | $0 | $53,762,481 | -$53,762,481 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 20 reporting-owner rows connected to Super Micro Computer, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
20
Largest Forms 3/4/5 holder
Charles Liang
Net 12M change
-$58,363,992
Latest report
26 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Charles Liang | President and CEO, Director, 10%+ Owner | $1,511,854,632 | -$25,500,000 | -1.7% | Mixed | 26 May 2026 |
| Liang Chiu-Chu Sara Liu | Director, 10%+ Owner | $1,511,854,632 | -$25,500,000 | -1.7% | Mixed | 26 May 2026 |
| Liaw Yih-Shyan Wally | Director | $484,303,984 | Mixed | 17 Feb 2026 | ||
| Fred Hwei-Ming Tsai | Director | $72,408,000 | Mixed | 10 May 2021 | ||
| Shiu Leung Chan | Director | $24,376,856 | Filing P/S | 01 Feb 2024 | ||
| Daniel W. Fairfax | Director | $10,251,005 | Mixed | 09 Aug 2024 | ||
| Tally C. Liu | Director | $8,410,073 | Mixed | 29 Jan 2026 | ||
| Sherman Tuan | Director | $6,996,916 | -$1,604,790 | -19% | Mixed | 26 Nov 2025 |
| Michael S. McAndrews | Director | $6,048,000 | Mixed | 10 May 2021 | ||
| George Kao | Svp, Operations | $4,524,925 | -$3,623,421 | -44% | Mixed | 24 Nov 2025 |
| Jin Xiao | Sr. Corporate VP, Engineering | $4,329,851 | Median | 10 May 2026 | ||
| David E. Weigand | SVP, Chief Financial Officer | $3,285,261 | -$2,135,781 | -39% | Mixed | 08 May 2026 |
| Judy L. Lin | Director | $2,785,629 | Mixed | 08 Aug 2025 | ||
| Saria Tseng | Director | $2,764,713 | Mixed | 03 Aug 2021 | ||
| Kenneth Cheung | SVP, Chief Accounting Officer | $1,884,091 | Mixed | 10 May 2026 | ||
| Don W. Clegg | SVP, Worldwide Sales | $1,529,185 | Mixed | 08 May 2026 | ||
| Vikranth Malyala | SVP, Chief Business Officer | $793,762 | Median | 11 May 2026 | ||
| Susan Mogensen | Director | $312,100 | Mixed | 08 Aug 2025 | ||
| Robert L. Blair | Director | $158,183 | Mixed | 08 Aug 2025 | ||
| Scott Angel | Director | $47,819 | Mixed | 06 Feb 2026 |
Recent insider transactions for Super Micro Computer, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Charles Liang | SMCI | Common Stock | Gift | -1.32% | -340,000 | 25,332,520 | 26 May 2026 | By Joint Account w/ Spouse | ||
| Liang Chiu-Chu Sara Liu | SMCI | Common Stock | Gift | -1.32% | -340,000 | 25,332,520 | 26 May 2026 | By Joint Account w/ Spouse | ||
| David E. Weigand | SMCI | Common Stock | Tax liability | -1.26% | -1,497 | 116,964 | 10 May 2026 | Direct | ||
| David E. Weigand | SMCI | Common Stock | Options Exercise | 3.65% | 4,170 | 118,454 | 10 May 2026 | Direct | ||
| David E. Weigand | SMCI | Restricted Stock Units | Options Exercise | -100% | -4,170 | 0 | 10 May 2026 | Direct | ||
| Don W. Clegg | SMCI | Common Stock | Tax liability | -1.64% | -829 | 49,713 | 10 May 2026 | Direct | ||
| Don W. Clegg | SMCI | Common Stock | Options Exercise | 4.74% | 2,310 | 51,003 | 10 May 2026 | Direct | ||
| Don W. Clegg | SMCI | Restricted Stock Units | Options Exercise | -100% | -2,310 | 0 | 10 May 2026 | Direct | ||
| Jin Xiao | SMCI | Common Stock | Tax liability | -1.15% | -2,178 | 187,476 | 10 May 2026 | Direct | ||
| Jin Xiao | SMCI | Common Stock | Options Exercise | 3.27% | 6,068 | 191,574 | 10 May 2026 | Direct | ||
| Jin Xiao | SMCI | Restricted Stock Units | Options Exercise | -43.5% | -6,068 | 7,880 | 10 May 2026 | Direct | ||
| Liang Chiu-Chu Sara Liu | SMCI | Common Stock | Tax liability | -0.53% | -3,355 | 631,756 | 10 May 2026 | Direct | ||
| Liang Chiu-Chu Sara Liu | SMCI | Common Stock | Options Exercise | 0.99% | 6,218 | 635,854 | 10 May 2026 | Direct | ||
| Liang Chiu-Chu Sara Liu | SMCI | Restricted Stock Units | Options Exercise | -42.4% | -6,218 | 8,450 | 10 May 2026 | Direct | ||
| Charles Liang | SMCI | Common Stock | Tax liability | -0.53% | -3,355 | 631,756 | 10 May 2026 | By Spouse | ||
| Charles Liang | SMCI | Common Stock | Options Exercise | 0.99% | 6,218 | 635,854 | 10 May 2026 | By Spouse | ||
| Charles Liang | SMCI | Restricted Stock Units | Options Exercise | -42.4% | -6,218 | 8,450 | 10 May 2026 | By Spouse | ||
| Kenneth Cheung | SMCI | Common Stock | Tax liability | -0.75% | -449 | 59,331 | 10 May 2026 | Direct | ||
| Kenneth Cheung | SMCI | Common Stock | Options Exercise | 2.14% | 1,250 | 59,780 | 10 May 2026 | Direct | ||
| Kenneth Cheung | SMCI | Restricted Stock Units | Options Exercise | -16.7% | -1,250 | 6,250 | 10 May 2026 | Direct | ||
| David E. Weigand | SMCI | Restricted Stock Units | Award | 13,780 | 13,780 | 08 May 2026 | Direct | |||
| David E. Weigand | SMCI | Employee Stock Option (right to buy) | Award | 30,622 | 30,622 | 08 May 2026 | Direct | |||
| Don W. Clegg | SMCI | Restricted Stock Units | Award | 5,598 | 5,598 | 08 May 2026 | Direct | |||
| Don W. Clegg | SMCI | Employee Stock Option (right to buy) | Award | 12,440 | 12,440 | 08 May 2026 | Direct | |||
| Charles Liang | SMCI | Common Stock | Options Exercise | 3.44% | 20,980 | 630,780 | 27 Feb 2026 | By Spouse | ||
| Charles Liang | SMCI | Employee Stock Option (right to buy) | Options Exercise | -100% | -20,980 | 0 | 27 Feb 2026 | By Spouse | ||
| Liang Chiu-Chu Sara Liu | SMCI | Common Stock | Options Exercise | 3.44% | 20,980 | 630,780 | 27 Feb 2026 | Direct | ||
| Liang Chiu-Chu Sara Liu | SMCI | Employee Stock Option (right to buy) | Options Exercise | -100% | -20,980 | 0 | 27 Feb 2026 | Direct | ||
| Liaw Yih-Shyan Wally | SMCI | Common Stock | Tax liability | -1.27% | -1,220 | 94,492 | 17 Feb 2026 | Direct | ||
| Liaw Yih-Shyan Wally | SMCI | Common Stock | Options Exercise | 3.68% | 3,400 | 95,712 | 17 Feb 2026 | Direct | ||
| Liaw Yih-Shyan Wally | SMCI | Restricted Stock Units | Options Exercise | -50% | -3,400 | 3,400 | 17 Feb 2026 | Direct | ||
| Kenneth Cheung | SMCI | Common Stock | Tax liability | -1.56% | -927 | 58,530 | 17 Feb 2026 | Direct | ||
| Kenneth Cheung | SMCI | Common Stock | Options Exercise | 3.93% | 2,250 | 59,457 | 17 Feb 2026 | Direct | ||
| Kenneth Cheung | SMCI | Restricted Stock Units | Options Exercise | -50% | -2,250 | 2,250 | 17 Feb 2026 | Direct | ||
| Liang Chiu-Chu Sara Liu | SMCI | Common Stock | Tax liability | -0.34% | -2,108 | 609,800 | 17 Feb 2026 | Direct | ||
| Liang Chiu-Chu Sara Liu | SMCI | Common Stock | Options Exercise | 0.6% | 3,650 | 611,908 | 17 Feb 2026 | Direct | ||
| Liang Chiu-Chu Sara Liu | SMCI | Restricted Stock Units | Options Exercise | -50% | -3,650 | 3,650 | 17 Feb 2026 | Direct | ||
| Charles Liang | SMCI | Common Stock | Tax liability | -0.34% | -2,108 | 609,800 | 17 Feb 2026 | By Spouse | ||
| Charles Liang | SMCI | Common Stock | Options Exercise | 0.6% | 3,650 | 611,908 | 17 Feb 2026 | By Spouse | ||
| Charles Liang | SMCI | Restricted Stock Units | Options Exercise | -50% | -3,650 | 3,650 | 17 Feb 2026 | By Spouse | ||
| Don W. Clegg | SMCI | Common Stock | Tax liability | -1.44% | -716 | 49,059 | 17 Feb 2026 | Direct | ||
| Don W. Clegg | SMCI | Common Stock | Options Exercise | 3.64% | 1,750 | 49,775 | 17 Feb 2026 | Direct | ||
| Don W. Clegg | SMCI | Restricted Stock Units | Options Exercise | -50% | -1,750 | 1,750 | 17 Feb 2026 | Direct | ||
| David E. Weigand | SMCI | Common Stock | Tax liability | -1.98% | -2,333 | 115,246 | 17 Feb 2026 | Direct | ||
| David E. Weigand | SMCI | Common Stock | Options Exercise | 5.85% | 6,500 | 117,579 | 17 Feb 2026 | Direct | ||
| David E. Weigand | SMCI | Restricted Stock Units | Options Exercise | -50% | -6,500 | 6,500 | 17 Feb 2026 | Direct | ||
| Liaw Yih-Shyan Wally | SMCI | Common Stock | Tax liability | -3.98% | -3,684 | 88,974 | 10 Feb 2026 | Direct | ||
| Liaw Yih-Shyan Wally | SMCI | Common Stock | Options Exercise | 11.5% | 9,598 | 93,344 | 10 Feb 2026 | Direct | ||
| Liaw Yih-Shyan Wally | SMCI | Restricted Stock Units | Options Exercise | -52.3% | -9,598 | 8,750 | 10 Feb 2026 | Direct | ||
| Don W. Clegg | SMCI | Common Stock | Tax liability | -1.98% | -953 | 47,267 | 10 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.