Photronics, Inc. (PLAB) Insider Trading

Over the last 3 months, PLAB insiders made 0 open-market buys and 26 sales, a net sale of -$15.2M (SEC Form 4). Over the last 6 months, 215 institutions increased and 229 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
26
Net (3m)
-$15.2M
Insider trades by month Buys Sells
Sep
Oct
Dec
Jan
Mar
Apr
Context3-month price -15.5%Institutions mixed (13F)
DateInsiderTypeSharesPrice
Apr 21, 2026ZHANG RUIofficer: VP, CAO & Corporate ControllerSell4,556$46.70
Apr 20, 2026Lee Kang JyhdirectorSell10,000$46.05
Apr 17, 2026Lee Kang JyhdirectorSell10,000$45.10
Apr 16, 2026Wang Hsueh-Chunofficer: SVP/COO IC & US/EU Mnstrm OpsSell19,250$45.30
Apr 15, 2026Lee Kang JyhdirectorSell5,000$45.00
Apr 15, 2026Rivera Ericofficer: President, CFOOption1,000$9.78
Apr 15, 2026MACRICOSTAS CONSTANTINE SdirectorGrant3,722
Apr 15, 2026Liao Daniel JLdirectorGrant3,722
Apr 15, 2026Garcia David A.directorGrant3,722
Apr 15, 2026Rivera Ericofficer: President, CFOSell1,000$44.77
Apr 15, 2026Almeida MichelledirectorGrant3,722
Apr 15, 2026TYSON MITCHELL GdirectorGrant3,722
Apr 15, 2026LEWIS ADAM MdirectorGrant3,722
Apr 15, 2026Lee Kang JyhdirectorOption5,000$8.60
Apr 14, 2026MACRICOSTAS CONSTANTINE SdirectorSell50,000$45.35
Apr 13, 2026Wang Hsueh-Chunofficer: SVP/COO IC & US/EU Mnstrm OpsSell11,875$44.25
Apr 13, 2026Rivera Ericofficer: President, CFOSell882$44.00
Apr 13, 2026Lee Kang JyhdirectorSell5,000$44.00
Apr 13, 2026Rivera Ericofficer: President, CFOSell40,635$44.00
Apr 13, 2026Lee Kang JyhdirectorOption5,000$8.60
Apr 10, 2026Wang Hsueh-Chunofficer: SVP/COO IC & US/EU Mnstrm OpsSell10,000$42.69
Apr 10, 2026ZHANG RUIofficer: VP, CAO & Corporate ControllerSell1,752$43.50
Apr 10, 2026MACRICOSTAS GEORGEofficer: CEOSell5,500$43.28
Apr 10, 2026Lee Kang JyhdirectorSell5,000$43.27
Apr 10, 2026MACRICOSTAS GEORGEofficer: CEOSell6,500$43.27
Apr 10, 2026Lee Kang JyhdirectorOption5,000$8.60
Apr 10, 2026MACRICOSTAS GEORGEofficer: CEOSell109,194$42.90
Apr 8, 2026Lee Kang JyhdirectorSell5,000$40.53
Apr 8, 2026Lee Kang JyhdirectorOption5,000$8.60
Apr 3, 2026Wang Hsueh-Chunofficer: SVP/COO IC & US/EU Mnstrm OpsSell4,186$42.00

Source: PLAB SEC Form 4 filings, latest Apr 21, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their PLAB positions over the last 6 months (SEC Form 13F).

Increased
215
New positions
133
Reduced
229
Sold out
73
Largest moves
InstitutionActionSharesFiled
BLACKROCK, INC.Increased9.4MMay 13, 2026
BLACKROCK, INC.Increased8.8MFeb 12, 2026
VANGUARD GROUP INCReduced5.7MJan 29, 2026
DIMENSIONAL FUND ADVISORS LPReduced4.1MFeb 12, 2026
DIMENSIONAL FUND ADVISORS LPReduced4.0MMay 7, 2026
LSV ASSET MANAGEMENTIncreased2.9MFeb 6, 2026
LSV ASSET MANAGEMENTReduced2.9MMay 11, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position2.8MMay 8, 2026
AMERICAN CENTURY COMPANIES INCIncreased2.8MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position2.5MMay 15, 2026
AMERICAN CENTURY COMPANIES INCIncreased2.5MFeb 13, 2026
STATE STREET CORPIncreased2.2MFeb 13, 2026
STATE STREET CORPReduced2.2MMay 15, 2026
VICTORY CAPITAL MANAGEMENT INCReduced2.1MFeb 13, 2026
VICTORY CAPITAL MANAGEMENT INCReduced1.9MMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.