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Who

Constantine S. Macricostas

Director

Company insider

Files Form 4 as: Executive Chairman, Photronics.

In numbers

Trades disclosed
555
Buys
8
Sells
93
Bought
$243K
Sold
$31.9M
Companies
1
Companies where not an officer
0
First trade
3 Jan 2006
Last trade
14 Apr 2026
Last filed
15 Apr 2026

Companies traded

Where they are an officer
PLAB PhotronicsDirector, Officer · Semiconductor Equipment · last 14 Apr 20268 buys · 93 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
14 Apr 2026filed 14 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Sold$2.3M50,000 at $45.35filing
14 Apr 2026filed 14 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Sold$2.3M50,000 at $45.35filing
13 Apr 2026filed 15 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—3,722 at $0.00filing
13 Apr 2026filed 15 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—3,722 at $0.00filing
2 Apr 2026filed 14 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code G—37,000 at $0.00filing
2 Apr 2026filed 14 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code G—37,000 at $0.00filing
1 Apr 2026filed 14 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code G—13,000 at $0.00filing
1 Apr 2026filed 14 Apr 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code G—13,000 at $0.00filing
3 Jan 2026filed 7 Jan 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—1,272 at $0.00filing
3 Jan 2026filed 7 Jan 2026PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—1,272 at $0.00filing
2 Jul 2025filed 3 Jul 2025PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Sold$596K29,500 at $20.20filing
20 Feb 2025filed 25 Feb 2025PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code G—1,000 at $0.00filing
13 Feb 2025filed 19 Feb 2025PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—7,548 at $0.00filing
13 Feb 2025filed 14 Feb 2025PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A$70K3,108 at $22.52filing
3 Jan 2024filed 5 Jan 2024PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—15,000 at $0.00filing
3 Jan 2023filed 5 Jan 2023PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—15,000 at $0.00filing
29 Dec 2022filed 5 Jan 2023PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code G$499K29,500 at $16.91filing
18 May 2022filed 20 May 2022PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—10,000 at $0.00filing
3 Jan 2022filed 5 Jan 2022PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code A—12,000 at $0.00filing
30 Dec 2021filed 5 Jan 2022PLAB PhotronicsSemiconductor EquipmentSEC FORM 4 Code G$956K50,000 at $19.12filing

The newest 500 lines are listed; the numbers count every line.

News

Photronics (NASDAQ:PLAB) Upgraded to "Buy" at Wall Street ZenPLAB · dailypolitical.com · 18 Oct 2026Aeluma (NASDAQ:ALMU) vs. Photronics (NASDAQ:PLAB) Critical AnalysisPLAB · dailypolitical.com · 13 Oct 2026

0 headlines in the last 90 days name Constantine S. Macricostas; 2 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Technology101

Buys in green, sells in red, by the company’s sector.

Related people

Rui ZhangVP, CAO & Corporate Controller · VP, CAO & Corporate Controller at Photronics, filing Form 4 there in the last year
Eric RiveraPresident, CFO · President, CFO at Photronics, filing Form 4 there in the last year
Kang Jyh LeeDirector · Director at Photronics, filing Form 4 there in the last year
Han Kyung ParkSVP & GM of FPD Ops · SVP & GM of FPD Ops at Photronics, filing Form 4 there in the last year
Mary PaladinoDirector · Director at Photronics, filing Form 4 there in the last year
Donald J. TrumpPresident · Also traded PLAB in the last 90 days