P

SEC EDGAR - Form 4 insider activity

Photronics Inc $PLAB

Tracked equity - 5 filings indexed by Nortis

Nortis signal thesis

Cluster activity detected. Review whether the filings are open-market trades or routine compensation events.

0

OM buys - 90d

3

OM sells - 90d

2

Routine filings

5

Cluster filings

$307.5K

Largest trade

46/100

Avg signal score

Filing tape

Recent filings

Last 30d: 5
Tax WithholdingCLUSTERRoutine 15/100
filed 2026-10-03
RECFO

Rivera Eric - President, CFO - $89.3K

Shares were withheld to cover taxes on vesting stock - this is routine mechanics, not a discretionary insider sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Tax WithholdingCLUSTERRoutine 15/100
filed 2026-10-03
ZROfficer

ZHANG RUI - VP, CAO & Corporate Controller - $12.1K

Shares were withheld to cover taxes on vesting stock - this is routine mechanics, not a discretionary insider sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Open-market SellCLUSTERHigh signal 71/100
filed 2026-10-02
LJBoard

Lee Kang Jyh - Director - $307.5K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Open-market SellCLUSTERNotable 56/100
filed 2026-09-30
PKInsider

Park Han Kyung - SVP & GM of FPD Ops - $288.5K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Open-market SellCLUSTERHigh signal 71/100
filed 2026-09-29
LJBoard

Lee Kang Jyh - Director - $221.3K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing