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SMCI Insider Trading & Form 4 Activity

Super Micro Computer, Inc.
Last filing: Oct 9, 2026·15 days ago
NEUTRAL · LAST 90 DAYS
0%
buyers
$0
0 buys
$0
0 sells
$0
net buying
0
insiders
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Net flow — last 12 months

Monthly net of insider buys minus sells. Green months indicate net buying; red months indicate net selling.

Most active insiders

Ranked by total transaction value over the last 90 days.

INSIDERBOUGHTSOLDNET
Liu Liang Chiu-Chu Sara
Insider
—
$12.2M
-$12.2M
Liang Charles
President and CEO
—
$12.2M
-$12.2M
Cheung Kenneth
SVP, Chief Accounting Officer
—
—
$0
Weigand David E
SVP, Chief Financial Officer
—
—
$0
Xiao Jin
Sr. Corporate VP, Engineering
—
—
$0
Malyala Vikranth
SVP, Chief Business Officer
—
—
$0
Thauberger Matthew
Chief Revenue Officer
—
—
$0

Recent transactions

Every Form 4 transaction for SMCI, newest first.

SELL10b5-1
Liu Liang Chiu-Chu Sara · Insider
Tx Oct 7·Filed Oct 9·EDGAR ↗
100,000 sh @ $45.02
$4.5M
SELL10b5-1
Liang Charles · President and CEO
Tx Oct 7·Filed Oct 9·EDGAR ↗
100,000 sh @ $45.02
$4.5M
SELL10b5-1
Liu Liang Chiu-Chu Sara · Insider
Tx Sep 4·Filed Sep 8·EDGAR ↗
100,000 sh @ $40.00
$4.0M
SELL10b5-1
Liang Charles · President and CEO
Tx Sep 4·Filed Sep 8·EDGAR ↗
100,000 sh @ $40.00
$4.0M
SELL10b5-1
Liu Liang Chiu-Chu Sara · Insider
Tx Sep 3·Filed Sep 8·EDGAR ↗
57,435 sh @ $37.62
$2.2M
SELL10b5-1
Liang Charles · President and CEO
Tx Sep 3·Filed Sep 8·EDGAR ↗
42,565 sh @ $36.60
$1.6M
SELL10b5-1
Liu Liang Chiu-Chu Sara · Insider
Tx Sep 3·Filed Sep 8·EDGAR ↗
42,565 sh @ $36.60
$1.6M
SELL10b5-1
Liang Charles · President and CEO
Tx Sep 3·Filed Sep 8·EDGAR ↗
57,435 sh @ $37.62
$2.2M
TAX
Liang Charles · President and CEO
Tx Aug 17·Filed Aug 19·EDGAR ↗
1,970 sh @ $38.28
$75K
EXERCISE
Cheung Kenneth · SVP, Chief Accounting Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
2,250 sh
—
TAX
Weigand David E · SVP, Chief Financial Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
3,308 sh @ $38.28
$127K
TAX
Cheung Kenneth · SVP, Chief Accounting Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
808 sh @ $38.28
$31K
EXERCISE
Liang Charles · President and CEO
Tx Aug 17·Filed Aug 19·EDGAR ↗
3,650 sh
—
EXERCISE
Weigand David E · SVP, Chief Financial Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
6,500 sh
—
TAX
Liu Liang Chiu-Chu Sara · Insider
Tx Aug 17·Filed Aug 19·EDGAR ↗
1,970 sh @ $38.28
$75K
TAX
Xiao Jin · Sr. Corporate VP, Engineering
Tx Aug 17·Filed Aug 19·EDGAR ↗
1,436 sh @ $38.28
$55K
EXERCISE
Thauberger Matthew · Chief Revenue Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
2,250 sh
—
TAX
Malyala Vikranth · SVP, Chief Business Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
3,053 sh @ $38.28
$117K
EXERCISE
Xiao Jin · Sr. Corporate VP, Engineering
Tx Aug 17·Filed Aug 19·EDGAR ↗
4,000 sh
—
EXERCISE
Liu Liang Chiu-Chu Sara · Insider
Tx Aug 17·Filed Aug 19·EDGAR ↗
3,650 sh
—
TAX
Thauberger Matthew · Chief Revenue Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
1,145 sh @ $38.28
$44K
EXERCISE
Malyala Vikranth · SVP, Chief Business Officer
Tx Aug 17·Filed Aug 19·EDGAR ↗
6,000 sh
—
EXERCISE
Weigand David E · SVP, Chief Financial Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,480 sh
—
TAX
Cheung Kenneth · SVP, Chief Accounting Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,231 sh @ $31.46
$39K
EXERCISE
Liu Liang Chiu-Chu Sara · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
2,110 sh
—
EXERCISE
Cheung Kenneth · SVP, Chief Accounting Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,250 sh
—
TAX
Xiao Jin · Sr. Corporate VP, Engineering
Tx Aug 10·Filed Aug 12·EDGAR ↗
368 sh @ $31.46
$12K
TAX
Liu Liang Chiu-Chu Sara · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
553 sh @ $31.46
$17K
EXERCISE
Xiao Jin · Sr. Corporate VP, Engineering
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,970 sh
—
TAX
Malyala Vikranth · SVP, Chief Business Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
580 sh @ $31.46
$18K
TAX
Cheung Kenneth · SVP, Chief Accounting Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
449 sh @ $31.46
$14K
EXERCISE
Liang Charles · President and CEO
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,024 sh
—
EXERCISE
Malyala Vikranth · SVP, Chief Business Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
2,110 sh
—
TAX
Thauberger Matthew · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
219 sh @ $31.46
$7K
TAX
Liu Liang Chiu-Chu Sara · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,139 sh @ $31.46
$36K
TAX
Liang Charles · President and CEO
Tx Aug 10·Filed Aug 12·EDGAR ↗
553 sh @ $31.46
$17K
TAX
Malyala Vikranth · SVP, Chief Business Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,074 sh @ $31.46
$34K
EXERCISE
Malyala Vikranth · SVP, Chief Business Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,138 sh
—
EXERCISE
Thauberger Matthew · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
430 sh
—
TAX
Thauberger Matthew · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
377 sh @ $31.46
$12K
TAX
Xiao Jin · Sr. Corporate VP, Engineering
Tx Aug 10·Filed Aug 12·EDGAR ↗
707 sh @ $31.46
$22K
EXERCISE
Xiao Jin · Sr. Corporate VP, Engineering
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,024 sh
—
EXERCISE
Liang Charles · President and CEO
Tx Aug 10·Filed Aug 12·EDGAR ↗
2,110 sh
—
EXERCISE
Thauberger Matthew · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
740 sh
—
TAX
Weigand David E · SVP, Chief Financial Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
754 sh @ $31.46
$24K
EXERCISE
Cheung Kenneth · SVP, Chief Accounting Officer
Tx Aug 10·Filed Aug 12·EDGAR ↗
3,429 sh
—
TAX
Liang Charles · President and CEO
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,139 sh @ $31.46
$36K
EXERCISE
Liu Liang Chiu-Chu Sara · Insider
Tx Aug 10·Filed Aug 12·EDGAR ↗
1,024 sh
—
EXERCISE
Weigand David E · SVP, Chief Financial Officer
Tx Jul 1·Filed Jul 2·EDGAR ↗
1,080 sh
—
TAX
Liu Liang Chiu-Chu Sara · Insider
Tx Jul 1·Filed Jul 2·EDGAR ↗
148 sh @ $27.65
$4K

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About SMCI insider trading data

Form 4 is the SEC filing required when an officer, director, or 10% owner of a public company buys or sells the company's stock. By law, these filings must be submitted within two business days of the trade. Tracenotes pulls every Form 4 filing for SMCI from EDGAR, parses it, and surfaces the activity on this page.

What insider buying tells you. Open-market purchases by insiders are widely studied as a meaningful signal. Unlike stock awards (which are compensation, not conviction), an executive spending their own money to buy shares of the company they run is a vote of confidence. Studies have found insider-buying clusters — three or more insiders buying within a short window — outperform the broader market over the following year.

What insider selling tells you. Selling is noisier. Many sales are pre-scheduled under SEC Rule 10b5-1 plans, which let insiders sell on a fixed schedule regardless of company news. We label these "10b5-1" so you can see them. Discretionary sales — sales not tied to a plan — are more meaningful, especially when multiple insiders sell in quick succession.

Tracenotes methodology. We scan EDGAR daily for new Form 4 filings, parse them into individual transactions, and detect clusters when three or more distinct insiders buy or sell within a 14-day window. The data on this page covers the last 12 months. For deeper analysis, Tracenotes also runs language-change detection on 10-K and 10-Q filings — that's our core product.

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Frequently asked questions

What is a Form 4 filing?

Form 4 is the SEC disclosure required when a company insider — an officer, director, or 10% owner — buys or sells the company's stock. By law these filings must be submitted within two business days of the trade.

Is insider buying SMCI always bullish?

Open-market purchases by insiders are widely viewed as a bullish signal because executives are spending their own money. Stock awards and option exercises are part of compensation and don't carry the same weight, which is why we treat them separately on this page.

What is a 10b5-1 trade?

A trade made under SEC Rule 10b5-1, which lets insiders pre-schedule sales weeks or months in advance. These sales execute on a fixed plan regardless of company news, so they're a weaker signal than discretionary sales. We label them with a "10b5-1" tag.

What is an insider cluster?

A cluster is when three or more distinct insiders buy or sell within a 14-day window. Clusters are studied as stronger signals than single trades because multiple people independently reach the same view. We surface active clusters on Super Micro Computer, Inc. (SMCI) when they form.

Where does SMCI insider trading data come from?

Every Form 4 filing for SMCI is sourced directly from SEC EDGAR. Tracenotes scans EDGAR daily, parses each Form 4 into individual transactions, and updates this page within hours of new filings.

Nothing on this page constitutes investment advice. Form 4 data is sourced from SEC EDGAR and provided for research purposes only.

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