Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-19 · Built: 2026-10-19 · 中文

← United States · Coverage record

US · SEC FORM 4

WhiteFiber, Inc.

WYFI · Nasdaq · CIK 0002042022 · Technology · Information Technology Services

INSIDER SIGNAL

No active buy signal

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

13 Form 4 transaction lines observed in the same window
1 sales · 12 option, withholding, award, gift or other lines

Last qualifying purchaseNo qualifying purchase is present in the local Form 4 history.

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
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.

Purchase breadth, concentration & cluster buying

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

Insider activity timeline

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

AprMayJunJulAugSepOct
Zhu JustinChief Financial Officer
○○○○
Sanfilippo ThomasChief Technology Officer
○○○
Shih IchiDirector
▼○
Tabar SamirChief Executive Officer
○○
Krassakopoulos BillyPresident
○
Huang ErkeChief Financial Officer
○
● Purchase▼ Sale○ Other

—

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot.—

Recent Form 4 activity

0Purchases
1Sales
25Other Form 4 lines
20SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING1 sale line(s) · context only
OTHER12 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
5,146,055
Previous report
4,786,199
Avg daily volume
1,173,796
Days to cover
4.4

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

No qualifying code P equity purchase is present in the local Form 4 history.

Form 4 evidence

26 transaction lines in the latest 365-day window; 32 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15Zhu JustinTax withholding (F)Ordinary Shares14,080USD 12.20USD 171,776SEC filing ↗
2026-10-14Zhu JustinAward / grant (A)Ordinary Shares26,374USD —USD —SEC filing ↗
2026-10-14Tabar SamirAward / grant (A)Ordinary Shares54,137USD —USD —SEC filing ↗
Show recent Form 4 evidence (26 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-15Zhu JustinTax withholding (F)Ordinary Shares14,080USD 12.20USD 171,776SEC filing ↗
2026-10-14Zhu JustinAward / grant (A)Ordinary Shares26,374USD —USD —SEC filing ↗
2026-10-14Tabar SamirAward / grant (A)Ordinary Shares54,137USD —USD —SEC filing ↗
2026-08-27Zhu JustinTax withholding (F)Ordinary Shares2,060USD 20.39USD 42,003SEC filing ↗
2026-08-05Sanfilippo ThomasTax withholding (F)Ordinary Shares, $01 par value1,259USD 26.34USD 33,162SEC filing ↗
2026-08-03Shih IchiAward / grant (A)Ordinary Shares4,657USD —USD —SEC filing ↗
2026-08-01Zhu JustinAward / grant (A)Ordinary Shares4,219USD —USD —SEC filing ↗
2026-07-31Sanfilippo ThomasOption exercise / conversion (M)Ordinary Shares, $01 par value4,412USD —USD —SEC filing ↗
2026-07-24Tabar SamirOption exercise / conversion (M)Ordinary Shares, $.01 par value7,079USD —USD —SEC filing ↗
2026-07-24Huang ErkeOption exercise / conversion (M)Ordinary Shares, $.01 par value7,079USD —USD —SEC filing ↗
2026-05-29Shih IchiSale (S)Ordinary Shares7,059USD 30.12USD 212,617SEC filing ↗
2026-05-07Sanfilippo ThomasTax withholding (F)Ordinary Shares, $.01 par value955USD 21.00USD 20,055SEC filing ↗
2026-04-28Krassakopoulos BillyTax withholding (F)Ordinary Shares, $.01 par value8,490USD —USD —SEC filing ↗
2026-03-31Tabar SamirOption exercise / conversion (M)Ordinary Shares, $.01 par value41,982USD —USD —SEC filing ↗
2026-03-31Huang ErkeOption exercise / conversion (M)Ordinary Shares, $.01 par value41,982USD —USD —SEC filing ↗
2026-03-19Tabar SamirOption exercise / conversion (M)Ordinary Shares, $.01 par value33,047USD —USD —SEC filing ↗
2026-03-19Huang ErkeOption exercise / conversion (M)Ordinary Shares, $.01 par value66,094USD —USD —SEC filing ↗
2026-03-16Krassakopoulos BillyOption exercise / conversion (M)Ordinary Shares, $.01 par value15,624USD —USD —SEC filing ↗
2026-02-04Sanfilippo ThomasOption exercise / conversion (M)Ordinary Shares, $.01 par value4USD —USD —SEC filing ↗
2026-02-04Sanfilippo ThomasOption exercise / conversion (M)Ordinary Shares, $.01 par value4,412USD —USD —SEC filing ↗
2026-01-13Krassakopoulos BillyOption exercise / conversion (M)Ordinary Shares, $.01 par value327USD —USD —SEC filing ↗
2025-11-17Krassakopoulos BillyOption exercise / conversion (M)Ordinary Shares, $.01 par value2,653USD —USD —SEC filing ↗
2025-10-31Sanfilippo ThomasOption exercise / conversion (M)Ordinary Shares, $.01 par value24,033USD 29.85USD 717,385SEC filing ↗
2025-10-31Sanfilippo ThomasTax withholding (F)Ordinary Shares, $.01 par value13,082USD 18.52USD 242,279SEC filing ↗
2025-10-31Sanfilippo ThomasOption exercise / conversion (M)Ordinary Shares, $.01 par value24,033USD 29.85USD 717,385SEC filing ↗
2025-10-31Sanfilippo ThomasTax withholding (F)Ordinary Shares, $.01 par value8,226USD 29.46USD 242,338SEC 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 date2026-10-19
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerWYFI
CIK0002042022
SectorTechnology
IndustryInformation Technology Services Yahoo Finance
SEC SIC6199 Finance Services
ExchangeNasdaq

Data coverage

Local Form 4 history32 transaction lines from 2025-08-08 to 2026-10-15
0 P purchase lines · 1 S sale lines · 31 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.