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Photronics Inc

PLAB
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0000810136

In the last 90 days, Photronics Inc insiders filed 0 open-market purchases and 1 sale; 315 institutions reported holding it in 13F filings for Q2 2026, worth $1.78B in total; no superinvestor holds it.

Holders of 5% or more of PLAB

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Photronics Inc, largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of PLAB
HolderLatest formStakeChangeFirst filedLatest filingFiling
BlackRock, Inc.13G/A15.00%9.55M shares–Apr 29, 20251 filingApr 29, 2025SEC
Dimensional Fund Advisors LP13G/A6.20%3.64M shares–Feb 16, 20215 filingsJul 14, 2026SEC
American Century Investment Management Inc13G5.70%3.39M sharesNewAug 14, 20261 filingAug 14, 2026SEC
Vanguard Portfolio Management LLC13G5.10%3.01M sharesNewJul 31, 20261 filingJul 31, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

23 Schedule 13D and 13G filings on Photronics Inc, newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on PLAB
Filed (ET)FilerFormStakeChangeEvent dateFiling
Aug 14, 20262:52 PM ETAmerican Century Investment Management Incand 3 others13G5.70%3.39M sharesNewJun 30, 2026SEC
Jul 31, 202611:40 AM ETVanguard Portfolio Management LLC13G5.10%3.01M sharesNewJun 30, 2026SEC
Jul 14, 20261:27 PM ETDimensional Fund Advisors LP13G/A6.20%3.64M shares–Jun 30, 2026SEC
Mar 26, 20262:52 PM ETVanguard Group Inc13G/A0.00%0 shares−10.09 ppfrom 10.09%Below 5%Mar 13, 2026SEC
Mar 5, 20261:24 PM ETVanguard Group Inc13G/A10.09%5.85M shares+0.14 ppfrom 9.95%Feb 27, 2026SEC
Jul 29, 20252:22 PM ETVanguard Group Inc13G/A9.95%5.99M shares–Jun 30, 2025SEC
Apr 29, 202511:36 AM ETBlackRock, Inc.13G/A15.00%9.55M shares–Mar 31, 2025SEC
Feb 13, 2024Vanguard Group Inc13G/AOld format–––SEC
Feb 9, 2024Dimensional Fund Advisors LP13G/AOld format–––SEC
Jan 30, 2024Norbel Investments, S.L.13G/AOld format–––SEC
Jan 22, 20242:03 PM ETBlackRock Inc.13G/AOld format–––SEC
Mar 16, 2023Norbel Investments, S.L.13GOld format–New–SEC
Feb 10, 2023Dimensional Fund Advisors LP13G/AOld format–––SEC
Feb 9, 2023Vanguard Group Inc13G/AOld format–––SEC
Jan 23, 20233:52 PM ETBlackRock Inc.13G/AOld format–––SEC
Feb 10, 2022Vanguard Group Inc13G/AOld format–––SEC
Feb 8, 2022Dimensional Fund Advisors LP13G/AOld format–––SEC
Jan 27, 202211:00 AM ETBlackRock Inc.13G/AOld format–––SEC
Jan 25, 20223:03 PM ETBlackRock Inc.13G/AOld format–––SEC
Feb 16, 2021Dimensional Fund Advisors LP13G/AOld format–––SEC
Feb 11, 2021Barrow Hanley Mewhinney & Strauss LLC13GOld format–New–SEC
Feb 10, 2021Vanguard Group Inc13G/AOld format–––SEC
Jan 25, 20214:49 PM ETBlackRock Inc.13GOld format–New–SEC

Form 144: proposed insider sales

2 notices from officers, directors and other affiliates planning to sell Photronics Inc shares, newest first.

Form 144 notices for PLAB
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Sep 25, 20261:36 PM ETPark Han KyungOfficer9.50K$288.5KSep 25, 2026Fidelity Brokerage Services LLCSEC
Sep 24, 20261:16 PM ETLee Kang JyhOfficer · Director7.50K$221.3KSep 24, 2026Fidelity Brokerage Services LLCSEC