SMCI
Super Micro Computer, Inc.
Super Micro Computer, Inc. insider trading
Super Micro Computer, Inc. files with the SEC as a Electronic Computers company headquartered in San Jose, CA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.
From SEC filings
Recent SMCI insider transactions
2 insiders traded SMCI on the open market between Sep 03, 2026 and Sep 04, 2026 — 6 sales worth $15.4M, of which every one was pre-scheduled under a 10b5-1 plan.
- Bought
- —
- Sold
- $15.4M
- Net
- −$15.4M
- Insiders
- 2
6 of 6 on a 10b5-1 plan
Liang Charles10b5-1
President and CEO · Director
−$4M
Sep 04, 2026
100,000 sh · $40.00
Liu Liang Chiu-Chu Sara10b5-1
Director · 10% Owner
−$4M
Sep 04, 2026
100,000 sh · $40.00
Liang Charles10b5-1
President and CEO · Director
−$1.6M
Sep 03, 2026
42,565 sh · $36.60
Liang Charles10b5-1
President and CEO · Director
−$2.2M
Sep 03, 2026
57,435 sh · $37.62
Liu Liang Chiu-Chu Sara10b5-1
Director · 10% Owner
−$1.6M
Sep 03, 2026
42,565 sh · $36.60
Liu Liang Chiu-Chu Sara10b5-1
Director · 10% Owner
−$2.2M
Sep 03, 2026
57,435 sh · $37.62
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Sep 04, 2026 | Liang Charles10b5-1President and CEO · Director | 100,000 | $40.00 | −$4M |
| Sep 04, 2026 | Liu Liang Chiu-Chu Sara10b5-1Director · 10% Owner | 100,000 | $40.00 | −$4M |
| Sep 03, 2026 | Liang Charles10b5-1President and CEO · Director | 42,565 | $36.60 | −$1.6M |
| Sep 03, 2026 | Liang Charles10b5-1President and CEO · Director | 57,435 | $37.62 | −$2.2M |
| Sep 03, 2026 | Liu Liang Chiu-Chu Sara10b5-1Director · 10% Owner | 42,565 | $36.60 | −$1.6M |
| Sep 03, 2026 | Liu Liang Chiu-Chu Sara10b5-1Director · 10% Owner | 57,435 | $37.62 | −$2.2M |
SEC Form 4 data, Q3 2024 to Q2 2026
SMCI insider trading by quarter
Between Jul 01, 2024 and Jun 30, 2026, 6 insiders traded SMCI on the open market: 0 purchases and 21 sales worth $89.7M, 7 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 0 purchases and 8 sales ($31.4M), by 5 insiders.
| Quarter | Bought | Sold | Insiders |
|---|---|---|---|
| Q2 2026 | — | — | |
| Q1 2026 | — | — | |
| Q4 2025 | — | −$3.5M2 sales | |
| Q3 2025 | — | −$27.9M6 sales · 5 on a plan | |
| Q2 2025 | — | −$49.2M8 sales · 2 on a plan | |
| Q1 2025 | — | −$9.1M5 sales | |
| Q4 2024 | — | — | |
| Q3 2024 | — | — |
- Largest sale
- −$13.5M of SMCI by Liang Charles (President and CEO · Director) on Jun 18, 2025, under a 10b5-1 plan.
Open-market transactions through Jun 30, 2026most recent first
Tuan Sherman
Director
−$1.6M
Nov 26, 2025
48,630 sh · $33.00
Kao George
SVP, Operations
−$1.9M
Nov 24, 2025
56,904 sh · $32.83
Weigand David E10b5-1
SVP, Chief Financial Officer
−$1.1M
Sep 15, 2025
25,000 sh · $45.14
Weigand David E10b5-1
SVP, Chief Financial Officer
−$994.9K
Sep 03, 2025
24,700 sh · $40.28
Weigand David E10b5-1
SVP, Chief Financial Officer
−$12.3K
Sep 03, 2025
300 sh · $40.85
Kao George
SVP, Operations
−$1.8M
Aug 22, 2025
40,000 sh · $43.88
Liu Liang Chiu-Chu Sara10b5-1
Director · 10% Owner
−$12M
Jul 28, 2025
200,000 sh · $60.00
Liang Charles10b5-1
President and CEO · Director
−$12M
Jul 28, 2025
200,000 sh · $60.00
Liang Charles10b5-1
President and CEO · Director
−$13.5M
Jun 18, 2025
300,000 sh · $45.00
Liu Liang Chiu-Chu Sara10b5-1
Director · 10% Owner
−$13.5M
Jun 18, 2025
300,000 sh · $45.00
Weigand David E
SVP, Chief Financial Officer
−$2.9M
May 20, 2025
67,000 sh · $44.02
Liang Charles
President and CEO · Director
−$8.3M
May 14, 2025
184,694 sh · $44.98
Liu Liang Chiu-Chu Sara
Director · 10% Owner
−$8.3M
May 14, 2025
184,694 sh · $44.98
Kao George
SVP, Operations
−$1.3M
May 14, 2025
28,400 sh · $45.86
Liu Liang Chiu-Chu Sara
Director · 10% Owner
−$697.3K
May 14, 2025
15,306 sh · $45.56
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Nov 26, 2025 | Tuan ShermanDirector | 48,630 | $33.00 | −$1.6M |
| Nov 24, 2025 | Kao GeorgeSVP, Operations | 56,904 | $32.83 | −$1.9M |
| Sep 15, 2025 | Weigand David E10b5-1SVP, Chief Financial Officer | 25,000 | $45.14 | −$1.1M |
| Sep 03, 2025 | Weigand David E10b5-1SVP, Chief Financial Officer | 24,700 | $40.28 | −$994.9K |
| Sep 03, 2025 | Weigand David E10b5-1SVP, Chief Financial Officer | 300 | $40.85 | −$12.3K |
| Aug 22, 2025 | Kao GeorgeSVP, Operations | 40,000 | $43.88 | −$1.8M |
| Jul 28, 2025 | Liu Liang Chiu-Chu Sara10b5-1Director · 10% Owner | 200,000 | $60.00 | −$12M |
| Jul 28, 2025 | Liang Charles10b5-1President and CEO · Director | 200,000 | $60.00 | −$12M |
| Jun 18, 2025 | Liang Charles10b5-1President and CEO · Director | 300,000 | $45.00 | −$13.5M |
| Jun 18, 2025 | Liu Liang Chiu-Chu Sara10b5-1Director · 10% Owner | 300,000 | $45.00 | −$13.5M |
| May 20, 2025 | Weigand David ESVP, Chief Financial Officer | 67,000 | $44.02 | −$2.9M |
| May 14, 2025 | Liang CharlesPresident and CEO · Director | 184,694 | $44.98 | −$8.3M |
| May 14, 2025 | Liu Liang Chiu-Chu SaraDirector · 10% Owner | 184,694 | $44.98 | −$8.3M |
| May 14, 2025 | Kao GeorgeSVP, Operations | 28,400 | $45.86 | −$1.3M |
| May 14, 2025 | Liu Liang Chiu-Chu SaraDirector · 10% Owner | 15,306 | $45.56 | −$697.3K |
From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.
Super Micro Computer, Inc. company record
- SEC industry classification
- Electronic Computers
- Headquarters
- San Jose, CA
- Incorporated in
- CA
- Listed on
- Nasdaq
- SEC Central Index Key
- 0001375365
Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.
After insiders bought SMCI
What the stock actually did in the 90 days following each open-market purchase
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How to read SMCI insider activity
- Open-market purchase (code P)
- An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
- Grants and option exercises (codes A, M)
- Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
- Cluster buy
- Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.
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Questions
- Are SMCI insiders buying or selling?
- Between Sep 03, 2026 and Sep 04, 2026, 2 Super Micro Computer, Inc. insiders made no open-market purchases and 6 sales worth $15.4M, a net sale of $15.4M. 6 of the sales were pre-scheduled under a Rule 10b5-1 plan.
- How much SMCI stock have insiders bought and sold in the last two years?
- Between Jul 01, 2024 and Jun 30, 2026, 6 Super Micro Computer, Inc. insiders made no open-market purchases and 21 sales worth $89.7M. 7 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: no purchases and 8 sales ($31.4M). The largest sale was Liang Charles selling $13.5M on Jun 18, 2025.
- What was the largest recent SMCI insider trade?
- Liang Charles (President and CEO · Director) sold $4M of SMCI stock on Sep 04, 2026 at about $40.00 a share, under a pre-scheduled 10b5-1 plan.
- When did an insider last buy SMCI shares?
- No open-market purchase by a Super Micro Computer, Inc. insider appears in the filings from Sep 03, 2026 to Sep 04, 2026 — every recorded open-market transaction in that period was a sale.
- Where does SMCI insider trading data come from?
- From the Form 4 filings Super Micro Computer, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.
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