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

FORMFACTOR INC

FORM · Nasdaq · CIK 0001039399 · Technology · Semiconductor Equipment & Materials

INSIDER SIGNAL

No active buy signal

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

76 Form 4 transaction lines observed in the same window
45 sales · 31 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 salesHigh
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
SLESSOR MIKECEO
○○○○▼▼▼○○○○○○▼▼▼
McKinnis Aric BrendanCFO, SVP Global Finance
○○○○○○
St Dennis ThomasDirector
○▼▼○
STEVEN-WAISS KELLEYDirector
○▼▼
Rhodes SheriDirector
○▼
Obregon-Jimenez RebecaDirector
○▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 2 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.—

Recent Form 4 activity

0Purchases
75Sales
54Other Form 4 lines
54SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING45 sale line(s) · context only
OTHER31 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
3,269,962
Previous report
3,217,345
Avg daily volume
1,301,411
Days to cover
2.5

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

129 transaction lines in the latest 365-day window; 424 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-14SLESSOR MIKESale (S)Common Stock11,098USD 125.20USD 1,389,437SEC filing ↗
2026-09-16SLESSOR MIKESale (S)Common Stock17,510USD 104.73USD 1,833,817SEC filing ↗
2026-09-03STEVEN-WAISS KELLEYSale (S)Common Stock2,100USD 96.10USD 201,810SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-14SLESSOR MIKESale (S)Common Stock11,098USD 125.20USD 1,389,437SEC filing ↗
2026-09-16SLESSOR MIKESale (S)Common Stock17,510USD 104.73USD 1,833,817SEC filing ↗
2026-09-03STEVEN-WAISS KELLEYSale (S)Common Stock2,100USD 96.10USD 201,810SEC filing ↗
2026-08-14SLESSOR MIKESale (S)Common Stock16,002USD 130.95USD 2,095,532SEC filing ↗
2026-08-07SLESSOR MIKEOption exercise / conversion (M)Common Stock147,700USD 0.00USD 0SEC filing ↗
2026-08-07SLESSOR MIKETax withholding (F)Common Stock82,196USD 117.39USD 9,648,988SEC filing ↗
2026-08-06SLESSOR MIKEOption exercise / conversion (M)Common Stock6,031USD 0.00USD 0SEC filing ↗
2026-08-06SLESSOR MIKETax withholding (F)Common Stock3,357USD 115.21USD 386,760SEC filing ↗
2026-08-06McKinnis Aric BrendanOption exercise / conversion (M)Common Stock1,099USD 0.00USD 0SEC filing ↗
2026-08-06McKinnis Aric BrendanTax withholding (F)Common Stock274USD 115.21USD 31,568SEC filing ↗
2026-08-05SLESSOR MIKEOption exercise / conversion (M)Common Stock3,644USD 0.00USD 0SEC filing ↗
2026-08-05SLESSOR MIKETax withholding (F)Common Stock2,028USD 114.44USD 232,084SEC filing ↗
2026-08-05McKinnis Aric BrendanOption exercise / conversion (M)Common Stock521USD 0.00USD 0SEC filing ↗
2026-08-05McKinnis Aric BrendanTax withholding (F)Common Stock130USD 114.44USD 14,877SEC filing ↗
2026-07-15SLESSOR MIKESale (S)Common Stock4,735USD 118.31USD 560,195SEC filing ↗
2026-06-16St Dennis ThomasGift (G)Common Stock740USD 0.00USD 0SEC filing ↗
2026-06-15St Dennis ThomasSale (S)Common Stock2,800USD 151.49USD 424,172SEC filing ↗
2026-06-10SLESSOR MIKESale (S)Common Stock11,890USD 121.35USD 1,442,897SEC filing ↗
2026-06-02Rhodes SheriSale (S)Common Stock6,328USD 125.40USD 793,531SEC filing ↗
2026-06-02McKinnis Aric BrendanOption exercise / conversion (M)Common Stock773USD 0.00USD 0SEC filing ↗
2026-06-02McKinnis Aric BrendanTax withholding (F)Common Stock193USD 125.11USD 24,146SEC filing ↗
2026-05-21Obregon-Jimenez RebecaSale (S)Restricted Stock Units3,828USD 126.48USD 484,165SEC filing ↗
2026-05-20WHITE BRIAN CSale (S)Common Stock3,250USD 126.00USD 409,500SEC filing ↗
2026-05-19St Dennis ThomasSale (S)Common Stock1,000USD 115.84USD 115,840SEC filing ↗
2026-05-15WHITE BRIAN CAward / grant (A)Common Stock1,347USD 0.00USD 0SEC filing ↗
2026-05-15Titinger JorgeAward / grant (A)Common Stock1,347USD 0.00USD 0SEC filing ↗
2026-05-15St Dennis ThomasAward / grant (A)Common Stock1,347USD 0.00USD 0SEC filing ↗
2026-05-15STEVEN-WAISS KELLEYAward / grant (A)Common Stock1,347USD 0.00USD 0SEC filing ↗
2026-05-15Rhodes SheriAward / grant (A)Common Stock1,347USD 0.00USD 0SEC filing ↗
2026-05-15Obregon-Jimenez RebecaAward / grant (A)Restricted Stock Units1,347USD 0.00USD 0SEC 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 · —
TickerFORM
CIK0001039399
SectorTechnology
IndustrySemiconductor Equipment & Materials Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNasdaq

Data coverage

Local Form 4 history424 transaction lines from 2020-02-10 to 2026-10-14
0 P purchase lines · 179 S sale lines · 245 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.