SEC Form 4
Super Micro Computer, Inc. (SMCI) insider trading
In the 12 months to Oct 24, 2026, 4 SMCI insiders reported open-market sales of $27.9M across 6 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $27.9M
- 6 filings · 4 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 4 of 6
- $24.4M of $27.9M sold (88%)
Who traded SMCI, and when
- Sale
- Sale, pre-arranged (10b5-1)
SMCI daily close from Oct 24, 2025 to Oct 23, 2026, between $20.53 and $52.69, last $32.94. 6 sale and 0 purchase filings by 4 insiders, marked at their filing dates. Charles Liang, President and CEO: sold $12.2M across 2 filings, first filed Sep 8, 2026, last Oct 9, 2026. Liang Chiu-Chu Sara Liu, Director: sold $12.2M across 2 filings, first filed Sep 8, 2026, last Oct 9, 2026. George Kao, SVP, OPERATIONS: sold $1.9M across 1 filing, first filed Nov 26, 2025, last Nov 26, 2025. Sherman Tuan, Director: sold $1.6M across 1 filing, first filed Dec 1, 2025, last Dec 1, 2025.
Largest mark · tap a row for others
Charles Liang · President and CEO
Sale $7,718,584
200,000 shares at $38.59 avg
Filed Sep 8, 2026 · traded Sep 3
Pre-arranged (10b5-1) · close on filing date $40.26
Charles Liang · President and CEO
President and CEO
$12.2M soldLiang Chiu-Chu Sara Liu · Director
Director
$12.2M soldGeorge Kao · SVP, OPERATIONS
SVP, OPERATIONS
$1.9M soldSherman Tuan · Director
Director
$1.6M soldHas Super Micro Computer, Inc.'s CEO sold stock?
Yes. Charles Liang (CEO) sold 300,000 shares ($12.2M) between Sep 2026 and Oct 2026, all under a pre-arranged 10b5-1 plan.
Open-market trades
6 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Charles Liang | President and CEO | $12.2M | — | 2 | 100% of sales | |
| Liang Chiu-Chu Sara Liu | Director | $12.2M | — | 2 | 100% of sales | |
| George Kao | SVP, OPERATIONS | $1.9M | — | 1 | — | |
| Sherman Tuan | Director | $1.6M | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Liang Chiu-Chu Sara Liu Director | SalePre-arranged (10b5-1) | 100,000 | $45.02 | $4.5M | 337,506 | |
traded | Charles Liang President and CEO | SalePre-arranged (10b5-1) | 100,000 | $45.02 | $4.5M | 337,506 | |
traded | Liang Chiu-Chu Sara Liu Director | SalePre-arranged (10b5-1) | 200,000 | $38.59 | $7.7M | 437,506 | |
traded | Charles Liang President and CEO | SalePre-arranged (10b5-1) | 200,000 | $38.59 | $7.7M | 437,506 | |
traded | Sherman Tuan Director | Sale | 48,630 | $33.00 | $1.6M | 207,156 | |
traded | George Kao SVP, OPERATIONS | Sale | 56,904 | $32.83 | $1.9M | 134,691 |
GET /stocks/filings/vX/form-4?tickers=SMCI&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"SMCI",
"SMCIP"
],
"issuer_cik": "0001375365",
"owner_cik": "0001392941",
"accession_number": "0001392941-26-000015",
"form_type": "4",
"filing_date": "2026-10-09",
"period_of_report": "2026-10-07",
"issuer_name": "Super Micro Computer, Inc.",
"issuer_trading_symbol": "SMCI",
"owner_name": "Liu Liang Chiu-Chu Sara",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": true,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-07",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 100000,
"transaction_price_per_share": 45.02,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 337506,
"transaction_value": 4502000,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The broker-assisted sales transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2026 during the Company's open window period (the \"Trading Plan\")."
},
{
"id": "F2",
"description": "The price reported here is a weighted average price. The shares were sold in multiple transactions at prices ranging from $45.00 to $45.06, inclusive. The Reporting Person undertakes to provide to Super Micro Computer, Inc., any security holder of Super Micro Computer, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."
}
]
},
{
"tickers": [
"SMCI",
"SMCIP"
],
"issuer_cik": "0001375365",
"owner_cik": "0001392942",
"accession_number": "0001392942-26-000014",
"form_type": "4",
"filing_date": "2026-10-09",
"period_of_report": "2026-10-07",
"issuer_name": "Super Micro Computer, Inc.",
"issuer_trading_symbol": "SMCI",
"owner_name": "Liang Charles",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": true,
"is_other": false,
"officer_title": "President and CEO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-07",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 100000,
"transaction_price_per_share": 45.02,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 337506,
"transaction_value": 4502000,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "By Spouse",
"footnotes": [
{
"id": "F1",
"description": "The broker-assisted sales transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person's spouse on May 26, 2026 during the Company's\nopen window period (the \"Trading Plan\")."
},
{
"id": "F2",
"description": "The price reported here is a weighted average price. The shares were sold in multiple transactions at prices ranging from $45.00 to $45.06, inclusive. The Reporting Person's spouse undertakes to provide to\nSuper Micro Computer, Inc., any security holder of Super Micro Computer, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares\nsold at each separate price."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 185 records
- Option exercises97 records
- Tax withholding84 records
- Gifts4 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for SMCI every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.