PLAB · Insider trading · 13F holders · Congress trades
Photronics Inc (PLAB)
Who is buying and selling PLAB: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 13
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $1.1M
- Congress trades, 12 months
- 0
PLAB at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 PLAB insiders filed 4 sales worth $1.1M on SEC Form 4, and no open-market purchases.
- 13 13F filers hold PLAB among their 50 largest positions, worth $81.5M combined. The biggest bets by portfolio weight are Kestrel Investment Management Corp (3.5%), Meros Investment Management, LP (2.5%) and Penbrook Management LLC (1.6%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in PLAB.
- PLAB last closed at $29.12 on Oct 29, 2026.
PLAB insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 PLAB insiders filed 4 sales worth $1.1M on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | Lee Kang Jyh | Director | Sale | 10,000 | $30.75 | $308K | SEC |
| Sep 29, 2026 | Park Han Kyung | SVP & GM of FPD Ops | Sale | 9,500 | $30.37 | $289K | SEC |
| Sep 28, 2026 | Lee Kang Jyh | Director | Sale | 7,500 | $29.50 | $221K | SEC |
| Sep 24, 2026 | Lee Kang Jyh | Director | Sale | 10,000 | $29.70 | $297K | SEC |
Who owns PLAB? Hedge funds and superinvestors
13 13F filers hold PLAB among their 50 largest positions, worth $81.5M combined. The biggest bets by portfolio weight are Kestrel Investment Management Corp (3.5%), Meros Investment Management, LP (2.5%) and Penbrook Management LLC (1.6%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Needham Investment Management LLCMutual fund manager | 0.6% | $19.0M | 585,500 | -3.2% shares | Q2 2026 |
| Easterly Investment Partners LLCAsset manager | 0.8% | $15.2M | 466,274 | +15.5% shares | Q2 2026 |
| Cambria Investment Management, L.P.Mutual fund manager | 0.5% | $10.8M | 331,505 | — | Q2 2026 |
| Meros Investment Management, LPInstitutional asset manager | 2.5% | $7.7M | 237,567 | +532.4% shares | Q2 2026 |
| Lone Peak Global Investors LLCInstitutional asset manager | 1.0% | $7.3M | 225,085 | +1253.7% shares | Q2 2026 |
| Kestrel Investment Management CorpInstitutional asset manager | 3.5% | $6.5M | 200,450 | +0.0% shares | Q2 2026 |
| JTC Employer Solutions Trustee LtdInvestment manager | 0.3% | $3.9M | 191,856 | +0.0% shares | Q2 2026 |
| Long Corridor Asset Management LtdHedge fund | 1.3% | $3.6M | 110,000 | New | Q2 2026 |
| Penbrook Management LLCWealth manager | 1.6% | $2.7M | 88,855 | -0.2% shares | Q3 2026 |
| Torrey Growth & Income AdvisorsWealth manager | 0.6% | $1.7M | 51,800 | — | Q2 2026 |
| Tuttle Capital Management, LLCMutual fund manager | 0.6% | $1.5M | 47,896 | -2.8% shares | Q3 2026 |
| Illumine Investment Management, LLCWealth manager | 0.7% | $997K | 0 | — | Q3 2026 |
| Watershed Asset Management, L.L.C.Asset manager | 0.5% | $563K | 17,320 | — | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 3, Q2 2026: 10). Screen PLAB in the grand portfolio →
PLAB stock trades by members of Congress
No member of Congress has disclosed a trade in PLAB.
PLAB questions and answers
Are insiders buying PLAB stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 PLAB insiders filed 4 sales worth $1.1M on SEC Form 4, and no open-market purchases.
Which hedge funds own PLAB?
13 13F filers hold PLAB among their 50 largest positions, worth $81.5M combined. The biggest bets by portfolio weight are Kestrel Investment Management Corp (3.5%), Meros Investment Management, LP (2.5%) and Penbrook Management LLC (1.6%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
Has Congress traded PLAB?
No member of Congress has disclosed a trade in PLAB.
Who is the largest holder of PLAB?
Among 13F filers, Needham Investment Management LLC reports the largest PLAB position, $19.0M (585,500 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Kestrel Investment Management Corp's: 3.5% of its portfolio.
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