FolioLanternBeta
PLABPhotronics Inc · Insider ownership research

Photronics Inc insiders sold $21.9M in the past 12 months. How much of their stake is that?

1% was sold under disclosed trading plans, 99% with no plan disclosed. The largest seller, Kang Lee (Director), sold $8.7M.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why

Updated Oct 16, 2026 from SEC filings · covers Oct 17, 2025 to Oct 16, 2026
$21.7M
sold with no plan disclosed, past 12 months
1.0%
of sales were under disclosed trading plans, past 12 months
9 of 16
officers and directors sold shares, past 12 months
Is this normal? More than usual: $21.9M sold, after almost none in the past 5 years. 9 insiders sold; the average is 4 a year. Year by year
Latest filing: Filed Oct 2 for a tax withholding on Oct 1. Eric Rivera had 2.9K shares withheld by the company for taxes. Filing
SEC ownership filings: 69 filed in the 12 months to Oct 16, 2026; 860 on record since Jan 8, 1999 · See the evidence

What stands out

Five insiders sold $19.3M with no disclosed plan: Kang Lee ($8.7M), George Macricostas ($5.2M) and Hsueh-Chun Wang ($2.2M), plus 2 more. The filings don't state a reason.Kang Lee: largest such sale, Dec 12, 2025 · George Macricostas: largest such sale, Apr 8, 2026 · Hsueh-Chun Wang: largest such sale, Apr 14, 2026

A share of stake is shown for 0 of the 9 officers and directors who sold. 16 are left out

i
Left out: Kang Lee, Constantine Macricostas, George Macricostas, Christopher Progler, Hsueh-Chun Wang, Eric Rivera, Han Park, Daniel Liao, Mitchell Tyson, Mary Paladino, Adam Lewis, Rui Zhang, David Garcia, Todd Alesio, Walter Fiederowicz and Michelle Almeida (share of stake is being verified).
Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.

Kang Lee
Director
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$8.7MNo plan disclosed
George Macricostas
CEO
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$5.2MNo plan disclosed
Hsueh-Chun Wang
SVP/COO IC & US/EU Mnstrm Ops
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$2.2MNo plan disclosed
Eric Rivera
President, CFO
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$1.9MNo plan disclosed
Han Park
SVP & GM of FPD Ops
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$1.3MNo plan disclosed
All 9 sellers

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planNo plan disclosedOne dollar scale for every month; the tallest bar is labeled
OctNovDec 2025: $225K under a disclosed planDec 2025: $3.4M no plan disclosedDecJan 2026: $3.7M no plan disclosedJanFebMar 2026: $952K no plan disclosedMarApr 2026: $12.5M no plan disclosed$12.5MAprMayJunJulAugSep 2026: $1.1M no plan disclosedSepOct

Recent activity

Past 30 days, Sep 17, 2026 to Oct 16, 2026
Oct 1, 20262 executives had 3.3K shares ($101K) withheld by the company for taxes (not a market sale).
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Eric Rivera
President, CFO
2,897$30.83n/an/aOct 1, 2026Oct 2, 2026
Rui Zhang
VP, CAO & Corporate Controller
392$30.83n/an/aOct 1, 2026Oct 2, 2026
Sep 29, 2026Kang Lee sold 10K shares ($308K) with no plan disclosed.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Kang Lee
Director
10,000$30.75n/an/aSep 29, 2026Oct 1, 2026
Sep 25, 2026Han Park sold 9.5K shares ($289K) with no plan disclosed.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Han Park
SVP & GM of FPD Ops
9,500$30.37n/an/aSep 25, 2026Sep 29, 2026
Sep 24, 2026Kang Lee sold 7.5K shares ($221K) with no plan disclosed.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Kang Lee
Director
7,500$29.50n/an/aSep 24, 2026Sep 28, 2026
Sep 22, 2026Kang Lee sold 10K shares ($297K) with no plan disclosed.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Kang Lee
Director
10,000$29.70n/an/aSep 22, 2026Sep 24, 2026

"% of total stake" is the shares in an event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings are not confirmed, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.

Outside holders, reported separately

Constantine Macricostas sold $2.3M in the past 12 months. Large shareholders and the funds or companies that board members represent are not part of management, so they are left out of the figures above.

Details

Common questions

Is the Photronics Inc CEO selling stock?

Yes. George Macricostas sold 121K shares ($5.2M) in the past 12 months, none of it under a trading plan disclosed in the filings.

Why are Photronics Inc insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 1% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 99% had no disclosed plan. A trading plan schedules sales in advance.

Are any Photronics Inc insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

The evidence

Who sold9 officers and directors: amount, % of holdings, trading plan
Who soldAmount% of holdingsTrading plan
Kang Lee
Director
$8.7M
235K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
George Macricostas
CEO
$5.2M
121K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
Hsueh-Chun Wang
SVP/COO IC & US/EU Mnstrm Ops
$2.2M
51K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
Eric Rivera
President, CFO
$1.9M
43K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
Han Park
SVP & GM of FPD Ops
$1.3M
37K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
Christopher Progler
EVP, Chief Technology Officer
$1.1M
35K shares
Not confirmed
share of stake is being verified. Why
20% under a disclosed plan 80% no plan disclosed
Mitchell Tyson
Director
$780K
20K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
Mary Paladino
Director
$395K
11K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed
Rui Zhang
VP, CAO & Corporate Controller
$289K
6.3K shares
Not confirmed
share of stake is being verified. Why
No plan disclosed

Sold by a charitable foundation the insider reports: Macricostas Family Foundation Inc, reported by Constantine Macricostas (sold $2.3M). A foundation's shares are not the insider's own stake, so they are left out of the figures above.

The full ownership picture0 of 16 officers and directors confirmed

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

InsiderHeld Oct 16, 2025SoldHeld Oct 16, 2026Still held
Kang Lee
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Kang Lee are complete.
Director
n/a−235Kn/an/a
Vesting, gifts, unvested awards and holding lines for Kang Lee

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Kang Lee are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Constantine Macricostas
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Constantine Macricostas are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Constantine Macricostas

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Constantine Macricostas are complete; balances and unit counts will be added when the check is finished.

−50Kgifted (net of own trusts)
George Macricostas
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for George Macricostas are complete.
CEO
n/a−121Kn/an/a
Vesting, gifts, unvested awards and holding lines for George Macricostas

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for George Macricostas are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Christopher Progler
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Christopher Progler are complete.
EVP, Chief Technology Officer
n/a−35Kn/an/a
Vesting, gifts, unvested awards and holding lines for Christopher Progler

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Christopher Progler are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Hsueh-Chun Wang
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Hsueh-Chun Wang are complete.
SVP/COO IC & US/EU Mnstrm Ops
n/a−51Kn/an/a
Vesting, gifts, unvested awards and holding lines for Hsueh-Chun Wang

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Hsueh-Chun Wang are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Eric Rivera
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Eric Rivera are complete.
President, CFO
n/a−43Kn/an/a
Vesting, gifts, unvested awards and holding lines for Eric Rivera

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Eric Rivera are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−9Kwithheld by the company for taxes

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
1,000$9.78Jan 2, 2029$21K

Estimate: options held × ($30.75 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close.

Han Park
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Han Park are complete.
SVP & GM of FPD Ops
n/a−37Kn/an/a
Vesting, gifts, unvested awards and holding lines for Han Park

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Han Park are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Daniel Liao
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Daniel Liao are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Daniel Liao

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Daniel Liao are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Mitchell Tyson
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Mitchell Tyson are complete.
Director
n/a−20Kn/an/a
Vesting, gifts, unvested awards and holding lines for Mitchell Tyson

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Mitchell Tyson are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Mary Paladino
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Mary Paladino are complete.
Director
n/a−11Kn/an/a
Vesting, gifts, unvested awards and holding lines for Mary Paladino

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Mary Paladino are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Adam Lewis
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Adam Lewis are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Adam Lewis

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Adam Lewis are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Rui Zhang
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Rui Zhang are complete.
VP, CAO & Corporate Controller
n/a−6.3Kn/an/a
Vesting, gifts, unvested awards and holding lines for Rui Zhang

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Rui Zhang are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−392withheld by the company for taxes
David Garcia
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for David Garcia are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for David Garcia

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for David Garcia are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Todd Alesio
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Todd Alesio are complete.
SVP, CAO
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Todd Alesio

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Todd Alesio are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Walter Fiederowicz
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Walter Fiederowicz are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Walter Fiederowicz

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Walter Fiederowicz are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Michelle Almeida
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Michelle Almeida are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Michelle Almeida

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Michelle Almeida are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Holdings and share of stake for Photronics Inc are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.

What explains the selling$21.9M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $21.9M across 559,394 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

The lighter segment is sales with no plan disclosed in the filing ($21.7M), including tax-related sales outside a plan.

No plan disclosed · $21.7M

Sales with no 10b5-1 plan and no tax reference in the filing. $8.7M of it is Kang Lee. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: George Macricostas, Apr 8, 2026

Taxes

9,344 shares ($304K) were withheld by the company for taxes, which isn't a market sale.

SellerShares soldProceedsUnder a disclosed planShare of totalSales dates
Kang Lee
Director
235K$8.7M0%40%Dec 12, 2025 to Sep 29, 2026
George Macricostas
CEO
121K$5.2M0%24%Apr 8, 2026 to Apr 8, 2026
Hsueh-Chun Wang
SVP/COO IC & US/EU Mnstrm Ops
51K$2.2M0%10%Apr 1, 2026 to Apr 14, 2026
Eric Rivera
President, CFO
43K$1.9M0%9%Apr 9, 2026 to Apr 13, 2026
Han Park
SVP & GM of FPD Ops
37K$1.3M0%6%Dec 12, 2025 to Sep 25, 2026
Christopher Progler
EVP, Chief Technology Officer
35K$1.1M20%5%Dec 1, 2025 to Dec 12, 2025
Mitchell Tyson
Director
20K$780K0%4%Dec 12, 2025 to Apr 1, 2026
Mary Paladino
Director
11K$395K0%2%Jan 6, 2026 to Jan 6, 2026
Rui Zhang
VP, CAO & Corporate Controller
6.3K$289K0%1%Apr 8, 2026 to Apr 17, 2026

Sales by month

MonthSale proceedsDisclosed planTo cover taxesNo plan disclosed
Oct 2025$0$0$0$0
Nov 2025$0$0$0$0
Dec 2025$3.6M$225K$0$3.4M
Jan 2026$3.7M$0$0$3.7M
Feb 2026$0$0$0$0
Mar 2026$952K$0$0$952K
Apr 2026$12.5M$0$0$12.5M
May 2026$0$0$0$0
Jun 2026$0$0$0$0
Jul 2026$0$0$0$0
Aug 2026$0$0$0$0
Sep 2026$1.1M$0$0$1.1M
Oct 2026$0$0$0$0
Is this normal? Selling year by year5 earlier years to compare with

More than usual: $21.9M sold, after almost none in the past 5 years. 9 insiders sold; the average is 4 a year.

12 months endingShares soldInsiders who soldProceeds
Oct 16, 2026
Latest 12 months
559K9$21.9M
Oct 16, 2025
1 year earlier
453K7$10.5M
Oct 16, 2024
2 years earlier
00$0
Oct 17, 2023
3 years earlier
6K1$106K
Oct 17, 2022
4 years earlier
236K7$4.3M
Oct 17, 2021
5 years earlier
264K6$3.4M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty16 officers and directors not confirmed

Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Photronics Inc are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology860 filings on record, 69 filed in the 12-month period, and how we read them

All 860 Forms 3, 4 and 5 on record for Photronics Inc (SEC CIK 810136), filed from Jan 8, 1999 to Oct 2, 2026; 69 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 16, 2026. Prices are the ones reported in each filing, often weighted averages. 25 older filings exist only on paper and could not be read.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (13)No filing in 18 months; last reported balances, not in any total

Spotted something wrong on this page? Report an error. We check every report against the SEC filing and list what we fix in the corrections log.