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PLAB · Photronics Inc
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PLAB Photronics (PLAB) Insider Trading, Ownership & Congress Trades

Semiconductors & Electronics · Semiconductors & related devices · CIK 0000810136
Quote by TradingView
Form 144 · 4
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
168
13F, latest reported quarter

What the filings say about PLAB

Insiders, 180 days
-$1.1M net sold
2 sellers · 0% of sales under a 10b5-1 plan
Planned sales (Form 144), 90 days
$1.1M
4 notices

Photronics insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, PHOTRONICS INC insiders sold a net $1.1M of stock across 158 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-28.

Insider
Filed
Shares
Value
Since filing
Lee Kang Jyh
Director
SELL
2026-10-01 SECtraded 2026-09-29
10,000
$307.5K
-11.5%
Context
  • 43 earlier Form 4 trades (code P or S) here by this insider (43 sales), the last on Sep 24, 2026.
  • The trade is 3.0% of the 337,350 shares held after it.
  • 1 other insider sold within 30 days.
  • 168 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Lee Kang Jyh sold about $307.5K of PLAB on Sep 29, 2026; 1 other insider sold within 30 days and 168 funds added in the latest 13F quarter.
Park Han Kyung
SVP & GM of FPD Ops
SELL
2026-09-29 SECtraded 2026-09-25
9,500
$288.5K
-9.5%
Context
  • 7 earlier Form 4 trades (code P or S) here by this insider (7 sales), the last on Jan 16, 2026.
  • The trade is 14.4% of the 66,000 shares held after it.
  • 1 other insider sold within 30 days.
  • 168 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP & GM of FPD Ops Park Han Kyung sold about $288.5K of PLAB on Sep 25, 2026; 1 other insider sold within 30 days and 168 funds added in the latest 13F quarter.
Lee Kang Jyh
Director
SELL
2026-09-28 SECtraded 2026-09-24
7,500
$221.2K
-10.3%
Context
  • 42 earlier Form 4 trades (code P or S) here by this insider (42 sales), the last on Sep 22, 2026.
  • The trade is 2.2% of the 347,350 shares held after it.
  • 1 other insider sold within 30 days.
  • 168 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Lee Kang Jyh sold about $221.2K of PLAB on Sep 24, 2026; 1 other insider sold within 30 days and 168 funds added in the latest 13F quarter.
Lee Kang Jyh
Director
SELL
2026-09-24 SECtraded 2026-09-22
10,000
$297.0K
-8.3%
Context
  • 41 earlier Form 4 trades (code P or S) here by this insider (41 sales), the last on Apr 16, 2026.
  • The trade is 2.8% of the 354,850 shares held after it.
  • 1 other insider sold within 30 days.
  • 168 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Lee Kang Jyh sold about $297.0K of PLAB on Sep 22, 2026; 1 other insider sold within 30 days and 168 funds added in the latest 13F quarter.
ZHANG RUI
VP, CAO & Corporate Controller
SELL
2026-04-21 SECtraded 2026-04-17
4,556
$212.8K
-44.3%
Context
  • 1 earlier Form 4 trade (code P or S) here by this insider (1 sale), the last on Apr 8, 2026.
  • The trade is 16.8% of the 27,079 shares held after it.
  • 6 other insiders sold within 30 days.
  • 168 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: VP, CAO & Corporate Controller ZHANG RUI sold about $212.8K of PLAB on Apr 17, 2026; 6 other insiders sold within 30 days and 168 funds added in the latest 13F quarter.
158 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
See all insider buying · insider selling
Showing the latest few. to see 153 more transactions and use the screener and CSV export. We store only your email; there is no password.
Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net -$1.1M over 180 days
-$1.1M over 90 days
more than 66% of Semiconductors & Electronics
Congress
no House purchase disclosed in the last 12 months
Funds
168 funds bought in last quarter
more than 53% of Semiconductors & Electronics
Revenue
-2.0% year over year
below 72% of Semiconductors & Electronics
Margin
16.1% net margin
more than 85% of Semiconductors & Electronics
Buybacks
$97.4M repurchased, FY to 2025-10-31
more than 66% of Semiconductors & Electronics
Short interest
7.2% of the float short (float per yahoo 2026-10-26) · 5.1 days to cover · settled 2026-09-30
more than 64% of Semiconductors & Electronics
What changed in the last 30 days
Oct 1Director Lee Kang Jyh sold $307.5K (Sep 29)
Sep 29Officer Lee Kang Jyh filed to sell $307.6K by Sep 29 (Form 144)
Why it matters
A Form 144 is a notice of intent to sell; the sale may not happen, and it says nothing about the price.
Sep 29SVP & GM of FPD Ops Park Han Kyung sold $288.5K (Sep 25)

Watch PLAB

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The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
+16.4%12M
-15%+33%+81%+130%2025-102025-122026-022026-042026-062026-082026-10 2026-04-08 · MACRICOSTAS GEORGE sold $4.7M2026-04-14 · MACRICOSTAS CONSTANTINE S sold $2.3M2026-04-09 · Rivera Eric sold $1.8M2025-12-12 · Progler Christopher J sold $894.5K2026-04-14 · Wang Hsueh-Chun sold $872.0K2025-12-12 · Lee Kang Jyh sold $770.6K2025-12-15 · Lee Kang Jyh sold $729.0K2026-04-09 · Wang Hsueh-Chun sold $525.5K2025-12-12 · Park Han Kyung sold $522.4K2026-04-16 · Lee Kang Jyh sold $460.5K2026-04-16 · Lee Kang Jyh sold $458.0K2026-04-15 · Lee Kang Jyh sold $451.0K2026-04-08 · Wang Hsueh-Chun sold $426.9K2026-04-01 · TYSON MITCHELL G sold $423.1K2026-01-06 · Paladino Mary sold $395.0K2026-03-23 · Lee Kang Jyh sold $390.0K2026-03-19 · Lee Kang Jyh sold $358.0K2026-01-06 · Lee Kang Jyh sold $354.1K2026-01-07 · Lee Kang Jyh sold $348.3K2026-01-16 · Lee Kang Jyh sold $345.1K2026-01-13 · Lee Kang Jyh sold $344.2K2026-01-15 · Lee Kang Jyh sold $341.3K2026-01-05 · Lee Kang Jyh sold $339.0K2026-01-12 · Lee Kang Jyh sold $330.5K2026-09-29 · Lee Kang Jyh sold $307.5K2025-12-22 · Lee Kang Jyh sold $300.2K2026-09-22 · Lee Kang Jyh sold $297.0K2026-01-02 · Lee Kang Jyh sold $293.5K2026-09-25 · Park Han Kyung sold $288.5K2026-04-08 · MACRICOSTAS GEORGE sold $281.3K2026-01-13 · Park Han Kyung sold $252.8K2026-04-08 · MACRICOSTAS GEORGE sold $238.0K2025-12-01 · Progler Christopher J sold $225.2K2026-04-13 · Lee Kang Jyh sold $225.0K2026-09-24 · Lee Kang Jyh sold $221.2K2026-04-09 · Lee Kang Jyh sold $220.0K2026-01-16 · Park Han Kyung sold $218.1K2026-04-08 · Lee Kang Jyh sold $216.4K2026-04-17 · ZHANG RUI sold $212.8K2026-04-01 · Lee Kang Jyh sold $210.0K2026-03-26 · Lee Kang Jyh sold $204.0K2026-04-06 · Lee Kang Jyh sold $202.7K2026-09-29 · Lee Kang Jyh filed to sell $307.6K2026-09-25 · Park Han Kyung filed to sell $288.5K2026-09-24 · Lee Kang Jyh filed to sell $221.2K2026-09-22 · Lee Kang Jyh filed to sell $297.0K
Insider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns PLAB: institutional holders (13F)

13F holdings, latest reported quarter
BlackRock, Inc.
9,486,185 sh
$308.6M
DIMENSIONAL FUND ADVISORS LP
3,642,585 sh
$118.5M
AMERICAN CENTURY COMPANIES INC
3,387,380 sh
$110.2M
VANGUARD PORTFOLIO MANAGEMENT LLC
2,972,130 sh
$96.7M
VANGUARD CAPITAL MANAGEMENT LLC
2,501,565 sh
$81.4M

Congress trades in PLAB

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

PLAB planned insider sales (Form 144)

Notice of intent to sell, filed before any sale
Lee Kang Jyh
Filed 2026-09-29
$307.6K
Park Han Kyung
Filed 2026-09-25
$288.5K
Lee Kang Jyh
Filed 2026-09-24
$221.2K
Lee Kang Jyh
Filed 2026-09-22
$297.0K

PLAB mutual fund holders (N-PORT)

Funds ranked by the share of their own portfolio in this stock (N-PORT).
Easterly Snow Small Cap Value Fund
$1.3M position · as of 2026-05-31
2.7%
JAMES MICRO CAP FUND
$722.1K position · as of 2026-06-30
2.2%
Euclidean Fundamental Value ETF
$2.5M position · as of 2026-06-30
1.9%
Invesco Semiconductors ETF
$42.3M position · as of 2026-07-31
1.8%
Needham Small Cap Growth Fund
$6.5M position · as of 2026-06-30
1.6%
OAK HARVEST LONG/SHORT HEDGED EQUITY
$1.6M position · as of 2026-05-31
1.5%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M · % is the share of the fund's own portfolio
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $1.1M sold by insiders over 180 days, 168 funds added last quarter, $1.1M in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
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PLAB financials

Revenue growth
-2.0%
XBRL, annual
Net margin
16.1%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$866.8M
four quarters, 2025-08-04 to 2026-08-02
Net margin, TTM
+19.0%
net income over revenue, 2025-08-04 to 2026-08-02
Free cash flow, TTM
$110.5M
operating cash flow minus capex, 2025-08-04 to 2026-08-02
Debt to equity
0.01x
long-term 2026-08-02 plus current 2023-07-30 (36 months older than the period end); equity 2026-08-02
Cash flow to debt
46.78x
TTM operating cash flow over long-term 2026-08-02 plus current 2023-07-30 (36 months older than the period end)
Return on equity
+13.7%
TTM net income over average of 2025-08-03 and 2026-08-02
Return on assets
+8.8%
TTM net income over average of 2025-08-03 and 2026-08-02
Return on invested capital
+24.4%
operating income after a 12.8% effective tax rate, over long-term 2026-08-02 plus current 2023-07-30 (36 months older than the period end) plus average of 2025-08-03 and 2026-08-02 minus cash
Return on capital employed
+11.5%
operating income (EBIT proxy) over average of 2025-08-03 and 2026-08-02 minus current liabilities
P/E, trailing
9.88x
close 2026-10-26 over four quarters of diluted EPS, 2025-08-04 to 2026-08-02
Enterprise value
$1.1B
market value at close 2026-10-26 on 2026-09-03 shares, plus long-term 2026-08-02 plus current 2023-07-30 (36 months older than the period end), minus cash 2026-08-02
FCF yield
+6.7%
TTM free cash flow over market value at close 2026-10-26
PEG, trailing
0.16x
P/E over trailing EPS growth of 60%: four quarters to 2026-08-02 against the four to 2025-08-03
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
2025-102024-102023-102022-10
Revenue$849.3M$866.9M$892.1M$824.5M
Gross profit$299.8M$315.9M$336.2M$294.2M
Operating income$208.2M$221.5M$253.1M$211.9M
Net income$136.4M$130.7M$125.5M$118.8M
EPS (diluted)2.282.092.031.94
Operating cash flow$247.8M$261.4M$302.2M$275.2M
Cash$492.3M$598.5M$499.3M$319.7M
Long-term debt$13.0K$25.0K$18.0M$32.3M
Buybacks$97.4M$0$0$2.5M
SEC XBRL, fiscal years, as known on 2026-10-28

PLAB Stock Sonar score 6/7 axes

Find similar shapesCompare

PLAB ranks highest on financial health (90th percentile) and profitability (75th), and lowest on growth (28th), among Semiconductors & Electronics peers.

ProfitHealthGrowthInsidersInstitutionsRisk
Profitability
75
Inputs
  • Return on equity+13.7% · 72 pct, sector of 154
  • Return on assets+8.8% · 77 pct, sector of 171
  • Return on invested capital+24.4% · 76 pct, sector of 56
  • Return on capital employed+11.5% · 75 pct, sector of 155
Financial health
90
Inputs
  • Debt to equity0.01x · 83 pct, sector of 152
  • Cash flow to debt46.78x · 98 pct, sector of 136
Growth
28
Inputs
  • Revenue growth, YoY-2.0% · 28 pct, sector of 194
  • Backlog growth, YoYno backlog line filed, or no year-earlier backlog
Insider conviction
32
Inputs
  • Net Form 4 buying (codes P and S), 180d-$1.1M · 64 pct, sector of 147
  • Insider buyers, 180d0 · 0 pct, sector of 151
Institutional and government
53
Inputs
  • Funds adding, latest quarter168 · 53 pct, sector of 184
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quartersno lobbying filings in the last four quarters
Risk and compliance
64
Inputs
  • Short interest, % of float+7.2% · 42 pct, sector of 221
  • Recalls per $1B revenue, 3ynot measured for this sector, almost no peer has an event
  • EPA cases per $1B revenue, 5ynot measured for this sector, almost no peer has an event
  • New text in Risk Factors, latest 10-K+4.3% · 86 pct, sector of 152
1 not measured: US patents
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

PLAB filings, in plain words

Are Photronics insiders buying or selling PLAB?

In the 180 days to 2026-10-28, Photronics insiders were net sellers, a net $1.1M across purchases and sales reported on Form 4, by 2 sellers.

Are there planned insider sales of PLAB?

Yes. 4 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-28, covering $1.1M of stock; the latest, by Lee Kang Jyh, was filed 2026-09-29.

Read the full summary

In the 180 days to 2026-10-28, Photronics insiders were net sellers of PLAB, a net $1.1M across purchases and sales reported on Form 4 by 2 sellers. None of the 4 insider sales was flagged as made under a Rule 10b5-1 plan. Insiders filed 4 Form 144 notices of intent to sell in the 90 days to 2026-10-28, covering $1.1M of stock. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.

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