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

IRIDEX CORP

IRIX · Nasdaq · CIK 0001006045 · Healthcare · Medical Devices

INSIDER SIGNAL

41.5 / 100

1 buyers · 11 purchase transaction lines · $31.4K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeLow
RoleModerate
RecencyModerate
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+7.0 / 35
Purchase size+3.7 / 25
Role+15.0 / 20
Recency+5.9 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ✓ Role scores high · most senior buyer: Chief Financial Officer

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

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

AprMayJunJulAugSepOct
Dizon Romeo RChief Financial Officer
●●●●●●○○●●●●●
Mercer PatrickPresident and CEO
○○○○
Lin Shih-Yao David; Novel Inspiration International Co., Ltd.TenPercentOwner
○○
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Dizon Romeo R · $31.4K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-26–2026-06-08

Roles in the peak window: Chief Financial Officer. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

41.5 / 100

Latest recorded score

↓ -0.3 ptsversus the previous recorded snapshot
  1. 42.2
  2. 42.0
  3. 41.9
  4. 41.8
  5. 41.5

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

87Purchases
0Sales
10Other Form 4 lines
45SEC filings · 365 days
BUYING11 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER8 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot detected in parsed evidence

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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+30.9%
3M
-16.8%
6M
-11.0%
12M
-18.3%

Volatility & liquidity

Volatility
79.2%
Beta
—
Avg daily value
USD 353,049

Valuation

Market cap
USD 15.6M
P/E
—

Fundamentals

Profit margin
-8.4%
ROE
-90.1%
Industry
Medical Devices

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, Profit margin, ROE · Fiscal year ended: 2026-01-03 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-13 · Status: PASS

Short interest

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

Shares short
131,655
Previous report
160,330
Avg daily volume
37,757
Days to cover
3.5

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

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

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-16Dizon Romeo RPurchase (P)Common Stock7,900USD 0.63USD 4,977SEC filing ↗
2026-09-14Dizon Romeo RPurchase (P)Common Stock2,354USD 0.65USD 1,530SEC filing ↗
2026-09-10Dizon Romeo RPurchase (P)Common Stock5,100USD 0.68USD 3,468SEC filing ↗
2026-08-24Dizon Romeo RPurchase (P)Common Stock1,300USD 0.75USD 975SEC filing ↗
2026-08-24Dizon Romeo RPurchase (P)Commn Stock5,368USD 0.75USD 4,026SEC filing ↗
2026-06-12Dizon Romeo RPurchase (P)Common Stock975USD 1.14USD 1,112SEC filing ↗
2026-06-11Dizon Romeo RPurchase (P)Common Stock1,675USD 1.14USD 1,909SEC filing ↗
2026-06-08Dizon Romeo RPurchase (P)Common Stock2,400USD 1.12USD 2,688SEC filing ↗
2026-06-05Dizon Romeo RPurchase (P)Common Stock2,521USD 1.15USD 2,899SEC filing ↗
2026-06-03Dizon Romeo RPurchase (P)Common Stock2,400USD 1.17USD 2,808SEC filing ↗
2026-05-26Dizon Romeo RPurchase (P)Common Stock5,004USD 1.00USD 5,004SEC filing ↗
2026-03-30Lin Shih-Yao DavidPurchase (P)Common Stock7,371USD 0.99USD 7,297SEC filing ↗
2026-03-24Lin Shih-Yao DavidPurchase (P)Common Stock4,549USD 1.33USD 6,050SEC filing ↗
2026-03-23Lin Shih-Yao DavidPurchase (P)Common Stock17,526USD 1.33USD 23,310SEC filing ↗
2026-03-17Lin Shih-Yao DavidPurchase (P)Common Stock22,805USD 1.31USD 29,872SEC filing ↗

Form 4 evidence

97 transaction lines in the latest 365-day window; 329 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02Lin Shih-Yao David; Novel Inspiration International Co., Ltd.J (J)Common Stock146,313USD —USD —SEC filing ↗
2026-10-01Mercer PatrickTax withholding (F)Common Stock23,917USD 0.63USD 15,116SEC filing ↗
2026-09-16Dizon Romeo RPurchase (P)Common Stock7,900USD 0.63USD 4,977SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02Lin Shih-Yao David; Novel Inspiration International Co., Ltd.J (J)Common Stock146,313USD —USD —SEC filing ↗
2026-10-01Mercer PatrickTax withholding (F)Common Stock23,917USD 0.63USD 15,116SEC filing ↗
2026-09-16Dizon Romeo RPurchase (P)Common Stock7,900USD 0.63USD 4,977SEC filing ↗
2026-09-14Dizon Romeo RPurchase (P)Common Stock2,354USD 0.65USD 1,530SEC filing ↗
2026-09-10Dizon Romeo RPurchase (P)Common Stock5,100USD 0.68USD 3,468SEC filing ↗
2026-08-24Dizon Romeo RPurchase (P)Common Stock1,300USD 0.75USD 975SEC filing ↗
2026-08-24Dizon Romeo RPurchase (P)Commn Stock5,368USD 0.75USD 4,026SEC filing ↗
2026-07-10Mercer PatrickAward / grant (A)Common Stock100,000USD 0.00USD 0SEC filing ↗
2026-07-10Dizon Romeo RAward / grant (A)Common Stock30,000USD 0.00USD 0SEC filing ↗
2026-07-07Lin Shih-Yao David; Novel Inspiration International Co., Ltd.J (J)Common Stock111,997USD —USD —SEC filing ↗
2026-06-13Mercer PatrickTax withholding (F)Common Stock3,990USD 1.12USD 4,469SEC filing ↗
2026-06-13Dizon Romeo RTax withholding (F)Common Stock2,691USD 1.12USD 3,014SEC filing ↗
2026-06-12Dizon Romeo RPurchase (P)Common Stock975USD 1.14USD 1,112SEC filing ↗
2026-06-11Dizon Romeo RPurchase (P)Common Stock1,675USD 1.14USD 1,909SEC filing ↗
2026-06-08Dizon Romeo RPurchase (P)Common Stock2,400USD 1.12USD 2,688SEC filing ↗
2026-06-05Dizon Romeo RPurchase (P)Common Stock2,521USD 1.15USD 2,899SEC filing ↗
2026-06-03Dizon Romeo RPurchase (P)Common Stock2,400USD 1.17USD 2,808SEC filing ↗
2026-05-26Mercer PatrickTax withholding (F)Common Stock19,233USD 1.01USD 19,425SEC filing ↗
2026-05-26Dizon Romeo RPurchase (P)Common Stock5,004USD 1.00USD 5,004SEC filing ↗
2026-04-01Lin Shih-Yao David; Novel Inspiration International Co., Ltd.J (J)Common Stock87,949USD —USD —SEC filing ↗
2026-03-30Lin Shih-Yao DavidPurchase (P)Common Stock7,371USD 0.99USD 7,297SEC filing ↗
2026-03-24Lin Shih-Yao DavidPurchase (P)Common Stock4,549USD 1.33USD 6,050SEC filing ↗
2026-03-23Lin Shih-Yao DavidPurchase (P)Common Stock17,526USD 1.33USD 23,310SEC filing ↗
2026-03-17Lin Shih-Yao DavidPurchase (P)Common Stock22,805USD 1.31USD 29,872SEC filing ↗
2026-03-16Lin Shih-Yao DavidPurchase (P)Common Stock1,682USD 1.30USD 2,187SEC filing ↗
2026-03-12Lin Shih-Yao DavidPurchase (P)Common Stock967USD 1.32USD 1,276SEC filing ↗
2026-03-06Dizon Romeo RPurchase (P)Common Stock1,110USD 1.26USD 1,399SEC filing ↗
2026-03-03Lin Shih-Yao DavidPurchase (P)Common Stock752USD 1.42USD 1,068SEC filing ↗
2026-03-02Lin Shih-Yao DavidPurchase (P)Common Stock1,424USD 1.40USD 1,994SEC filing ↗
2026-02-23Lin Shih-Yao DavidPurchase (P)Common Stock14,943USD 1.41USD 21,070SEC 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 · —
TickerIRIX
CIK0001006045
SectorHealthcare
IndustryMedical Devices Yahoo Finance
SEC SIC3845 Electromedical & Electrotherapeutic Apparatus
ExchangeNasdaq

Data coverage

Local Form 4 history329 transaction lines from 2020-01-30 to 2026-10-02
228 P purchase lines · 0 S sale lines · 101 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.