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

EXPONENT INC

EXPO · Nasdaq · CIK 0000851520 · Industrials · Engineering & Construction

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

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

Last qualifying purchase2026-09-18 · Souri Shukri Jeries · $12.6K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
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
Corrigan CatherineChief Executive Officer
○▼○▼○○▼○○▼
Lindstrom CarolDirector
○
Brown George H.Director
○
RICHARDSON KAREN ADirector
○
Zumwalt DebraDirector
○
JOHNSTON PAUL RDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Souri Shukri Jeries · $12.6K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-09-18–2026-09-18

Roles in the peak window: Group Vice President. Concentration uses priced qualifying P lines only and does not change the saved score.

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: 2026-09-18 · Souri Shukri Jeries.

Recent Form 4 activity

2Purchases
20Sales
40Other Form 4 lines
34SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING10 sale line(s) · context only
OTHER13 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
2,714,740
Previous report
3,080,474
Avg daily volume
617,168
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

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

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Souri Shukri JeriesPurchase (P)Common Stock184USD 68.45USD 12,595SEC filing ↗
2026-01-02Pye JohnPurchase (P)Common Stock89USD 66.64USD 5,931SEC filing ↗
2025-10-03Pye JohnPurchase (P)Common Stock80USD 63.75USD 5,100SEC filing ↗
2025-07-04SCHLENKER RICHARD L JRPurchase (P)Common Stock166USD 73.25USD 12,160SEC filing ↗
2025-07-04Pye JohnPurchase (P)Common Stock80USD 73.25USD 5,860SEC filing ↗
2025-04-04SCHLENKER RICHARD L JRPurchase (P)Common Stock140USD 73.21USD 10,249SEC filing ↗
2025-04-04Pye JohnPurchase (P)Common Stock67USD 73.21USD 4,905SEC filing ↗
2025-01-03Pye JohnPurchase (P)Common Stock61USD 84.46USD 5,152SEC filing ↗
2025-01-03Pye JohnPurchase (P)Common Stock61USD 84.46USD 5,152SEC filing ↗
2024-09-27SCHLENKER RICHARD L JRPurchase (P)Common Stock31USD 107.59USD 3,335SEC filing ↗
2024-09-27Pye JohnPurchase (P)Common Stock45USD 107.59USD 4,842SEC filing ↗
2024-06-28SCHLENKER RICHARD L JRPurchase (P)Common Stock113USD 90.36USD 10,211SEC filing ↗
2024-06-28Pye JohnPurchase (P)Common Stock46USD 90.36USD 4,157SEC filing ↗
2024-03-29SCHLENKER RICHARD L JRPurchase (P)Common Stock146USD 78.56USD 11,470SEC filing ↗
2024-03-29Pye JohnPurchase (P)Common Stock58USD 78.56USD 4,556SEC filing ↗

Form 4 evidence

62 transaction lines in the latest 365-day window; 473 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Souri Shukri JeriesPurchase (P)Common Stock184USD 68.45USD 12,595SEC filing ↗
2026-08-17Corrigan CatherineSale (S)Common Stock1,707USD 66.28USD 113,140SEC filing ↗
2026-08-17Corrigan CatherineOption exercise / conversion (M)Common Stock2,379USD 29.05USD 69,110SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Souri Shukri JeriesPurchase (P)Common Stock184USD 68.45USD 12,595SEC filing ↗
2026-08-17Corrigan CatherineSale (S)Common Stock1,707USD 66.28USD 113,140SEC filing ↗
2026-08-17Corrigan CatherineOption exercise / conversion (M)Common Stock2,379USD 29.05USD 69,110SEC filing ↗
2026-07-28Corrigan CatherineOption exercise / conversion (M)Common Stock12,665USD 37.45USD 474,304SEC filing ↗
2026-07-15Corrigan CatherineSale (S)Common Stock1,737USD 62.78USD 109,049SEC filing ↗
2026-07-15Corrigan CatherineOption exercise / conversion (M)Common Stock2,379USD 29.05USD 69,110SEC filing ↗
2026-06-25Corrigan CatherineOption exercise / conversion (M)Common Stock7,872USD 25.41USD 200,028SEC filing ↗
2026-06-15Corrigan CatherineSale (S)Common Stock4,119USD 57.13USD 235,318SEC filing ↗
2026-06-15Corrigan CatherineOption exercise / conversion (M)Common Stock5,605USD 26.96USD 151,086SEC filing ↗
2026-06-03Zumwalt DebraOption exercise / conversion (M)Common Stock2,009USD —USD —SEC filing ↗
2026-06-03RICHARDSON KAREN AOption exercise / conversion (M)Common Stock2,009USD —USD —SEC filing ↗
2026-06-03Lindstrom CarolOption exercise / conversion (M)Common Stock2,009USD —USD —SEC filing ↗
2026-06-03JOHNSTON PAUL ROption exercise / conversion (M)Common Stock2,009USD —USD —SEC filing ↗
2026-06-03Brown George H.Option exercise / conversion (M)Common Stock2,009USD —USD —SEC filing ↗
2026-05-26James Bradley ASale (S)Common Stock2,000USD 57.47USD 114,940SEC filing ↗
2026-05-19Reiss RichardSale (S)Common Stock1,672USD 58.65USD 98,063SEC filing ↗
2026-05-15Corrigan CatherineSale (S)Common Stock4,194USD 54.06USD 226,728SEC filing ↗
2026-05-15Corrigan CatherineOption exercise / conversion (M)Common Stock5,606USD 26.96USD 151,112SEC filing ↗
2026-05-13Sala JosephSale (S)Common Stock2,066USD 56.66USD 117,060SEC filing ↗
2026-05-13Rakow JosephSale (S)Common Stock2,945USD 54.66USD 160,974SEC filing ↗
2026-04-15Corrigan CatherineSale (S)Common Stock3,909USD 67.70USD 264,639SEC filing ↗
2026-04-15Corrigan CatherineOption exercise / conversion (M)Common Stock5,605USD 26.96USD 151,086SEC filing ↗
2026-03-11Sala JosephOption exercise / conversion (M)Common Stock3,180USD —USD —SEC filing ↗
2026-03-11Sala JosephTax withholding (F)Common Stock1,114USD 70.03USD 78,013SEC filing ↗
2026-03-11SCHLENKER RICHARD L JROption exercise / conversion (M)Common Stock7,630USD —USD —SEC filing ↗
2026-03-11SCHLENKER RICHARD L JRTax withholding (F)Common Stock3,694USD 70.03USD 258,691SEC filing ↗
2026-03-11Reitman Maureen T. F.Option exercise / conversion (M)Common Stock5,510USD —USD —SEC filing ↗
2026-03-11Reitman Maureen T. F.Tax withholding (F)Common Stock1,756USD 70.03USD 122,973SEC filing ↗
2026-03-11Reiss RichardOption exercise / conversion (M)Common Stock2,120USD —USD —SEC filing ↗
2026-03-11Reiss RichardTax withholding (F)Common Stock958USD 70.03USD 67,089SEC 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 · —
TickerEXPO
CIK0000851520
SectorIndustrials
IndustryEngineering & Construction Yahoo Finance
SEC SIC8742 Services-Management Consulting Services
ExchangeNasdaq

Data coverage

Local Form 4 history473 transaction lines from 2020-01-03 to 2026-09-18
58 P purchase lines · 147 S sale lines · 268 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.