Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Super Micro Computer, Inc.

SMCI · Nasdaq · CIK 0001375365 · Technology · Computer Hardware

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

111 Form 4 transaction lines observed in the same window
8 sales · 103 option, withholding, award, gift or other lines

Last qualifying purchase2024-02-01 · CHAN SHIU LEUNG · $1.1M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Liu Liang Chiu-Chu SaraDirector,TenPercentOwner
○○○○○○○○○▼▼▼
Liang CharlesPresident and CEO
○○○○○○○▼▼▼
WEIGAND DAVID ESVP, Chief Financial Officer
○○○○○○○○○○
Malyala VikranthSVP, Chief Business Officer
○○○○○○○○
Xiao JinSr. Corporate VP, Engineering
○○○○○○
Thauberger MatthewChief Revenue Officer
○○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2024-02-01 · CHAN SHIU LEUNG.

Recent Form 4 activity

0Purchases
10Sales
185Other Form 4 lines
72SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING8 sale line(s) · context only
OTHER103 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
87,363,140
Previous report
95,156,102
Avg daily volume
38,793,462
Days to cover
2.2

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2024-02-01CHAN SHIU LEUNGPurchase (P)Common Stock2,000USD 568.00USD 1,136,000SEC filing ↗
2023-08-11CHAN SHIU LEUNGPurchase (P)Common Stock4,000USD 265.57USD 1,062,280SEC filing ↗
2023-05-11CHAN SHIU LEUNGPurchase (P)Common Stock3,000USD 133.88USD 401,640SEC filing ↗
2023-05-10CHAN SHIU LEUNGPurchase (P)Common Stock1,000USD 133.09USD 133,090SEC filing ↗
2023-02-03CHAN SHIU LEUNGPurchase (P)Common Stock3,000USD 85.48USD 256,440SEC filing ↗
2022-11-21CHAN SHIU LEUNGPurchase (P)Common Stock1,525USD 83.50USD 127,338SEC filing ↗
2022-11-15CHAN SHIU LEUNGPurchase (P)Common Stock3,000USD 88.88USD 266,640SEC filing ↗
2022-11-14CHAN SHIU LEUNGPurchase (P)Common Stock6,000USD 81.20USD 487,200SEC filing ↗
2022-11-04CHAN SHIU LEUNGPurchase (P)Common Stock4,500USD 76.00USD 342,000SEC filing ↗
2022-11-04CHAN SHIU LEUNGPurchase (P)Common Stock1,000USD 76.00USD 76,000SEC filing ↗

Form 4 evidence

195 transaction lines in the latest 365-day window; 1,162 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-07Liu Liang Chiu-Chu SaraSale (S)Common Stock100,000USD 45.02USD 4,502,000SEC filing ↗
2026-10-07Liang CharlesSale (S)Common Stock100,000USD 45.02USD 4,502,000SEC filing ↗
2026-09-04Liu Liang Chiu-Chu SaraSale (S)Common Stock100,000USD 40.00USD 4,000,000SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-07Liu Liang Chiu-Chu SaraSale (S)Common Stock100,000USD 45.02USD 4,502,000SEC filing ↗
2026-10-07Liang CharlesSale (S)Common Stock100,000USD 45.02USD 4,502,000SEC filing ↗
2026-09-04Liu Liang Chiu-Chu SaraSale (S)Common Stock100,000USD 40.00USD 4,000,000SEC filing ↗
2026-09-04Liang CharlesSale (S)Common Stock100,000USD 40.00USD 4,000,000SEC filing ↗
2026-09-03Liu Liang Chiu-Chu SaraSale (S)Common Stock100,000USD 37.19USD 3,718,584SEC filing ↗
2026-09-03Liang CharlesSale (S)Common Stock100,000USD 37.19USD 3,718,584SEC filing ↗
2026-08-17Xiao JinOption exercise / conversion (M)Common Stock4,000USD —USD —SEC filing ↗
2026-08-17Xiao JinTax withholding (F)Common Stock1,436USD 38.28USD 54,970SEC filing ↗
2026-08-17WEIGAND DAVID EOption exercise / conversion (M)Common Stock6,500USD —USD —SEC filing ↗
2026-08-17WEIGAND DAVID ETax withholding (F)Common Stock3,308USD 38.28USD 126,630SEC filing ↗
2026-08-17Thauberger MatthewOption exercise / conversion (M)Common Stock2,250USD —USD —SEC filing ↗
2026-08-17Thauberger MatthewTax withholding (F)Common Stock1,145USD 38.28USD 43,831SEC filing ↗
2026-08-17Malyala VikranthOption exercise / conversion (M)Common Stock6,000USD —USD —SEC filing ↗
2026-08-17Malyala VikranthTax withholding (F)Common Stock3,053USD 38.28USD 116,869SEC filing ↗
2026-08-17Liu Liang Chiu-Chu SaraOption exercise / conversion (M)Common Stock3,650USD —USD —SEC filing ↗
2026-08-17Liu Liang Chiu-Chu SaraTax withholding (F)Common Stock1,970USD 38.28USD 75,412SEC filing ↗
2026-08-17Liang CharlesOption exercise / conversion (M)Common Stock3,650USD —USD —SEC filing ↗
2026-08-17Liang CharlesTax withholding (F)Common Stock1,970USD 38.28USD 75,412SEC filing ↗
2026-08-17Cheung KennethOption exercise / conversion (M)Common Stock2,250USD —USD —SEC filing ↗
2026-08-17Cheung KennethTax withholding (F)Common Stock808USD 38.28USD 30,930SEC filing ↗
2026-08-10Xiao JinOption exercise / conversion (M)Common Stock2,994USD —USD —SEC filing ↗
2026-08-10Xiao JinTax withholding (F)Common Stock1,075USD 31.46USD 33,820SEC filing ↗
2026-08-10WEIGAND DAVID EOption exercise / conversion (M)Common Stock1,480USD —USD —SEC filing ↗
2026-08-10WEIGAND DAVID ETax withholding (F)Common Stock754USD 31.46USD 23,721SEC filing ↗
2026-08-10Thauberger MatthewOption exercise / conversion (M)Common Stock1,170USD —USD —SEC filing ↗
2026-08-10Thauberger MatthewTax withholding (F)Common Stock596USD 31.46USD 18,750SEC filing ↗
2026-08-10Malyala VikranthOption exercise / conversion (M)Common Stock3,248USD —USD —SEC filing ↗
2026-08-10Malyala VikranthTax withholding (F)Common Stock1,654USD 31.46USD 52,035SEC filing ↗
2026-08-10Liu Liang Chiu-Chu SaraOption exercise / conversion (M)Common Stock3,134USD —USD —SEC filing ↗
2026-08-10Liu Liang Chiu-Chu SaraTax withholding (F)Common Stock1,692USD 31.46USD 53,230SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerSMCI
CIK0001375365
SectorTechnology
IndustryComputer Hardware Yahoo Finance
SEC SIC3571 Electronic Computers
ExchangeNasdaq

Data coverage

Local Form 4 history1,162 transaction lines from 2020-01-15 to 2026-10-07
11 P purchase lines · 292 S sale lines · 859 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.