Insider trading

Period: 120 months Stock: PLAB + Add filter Clear all
Views & alerts

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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

288 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

288 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

288 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

288 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
288 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
288 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

288 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
28 Jul 2025
Progler Christopher J EVP, Chief Technology Officer
Bought on a plan
$210.70K 10,000 at 21.07
5.0%
Bought on a plan
10 Jul 2025
TYSON MITCHELL G Director
Sold at will
$299.55K 15,000 at 19.97
20.9%
Not planned
2 Jul 2025
MACRICOSTAS CONSTANTINE S Director · indirect
Sold at will
$595.90K 29,500 at 20.20
100%
Sold half or more
27 Jun 2025
Garcia David A. Director
Bought
$50.35K 2,650 at 19.00
35.1%
First buy on file
20 Jun 2025
Lee Kang Jyh Director
Sold at will
$89.59K 4,882 at 18.35
0.9%
Not planned
18 Jun 2025
Lee Kang Jyh Director
Sold at will
$517.34K 28,118 at 18.40
5.0%
Not planned
17 Apr 2025
FIEDEROWICZ WALTER M Former Director
Sold at will
$88.97K 5,000 at 17.79
50.0%
Sold half or more
15 Apr 2025
FIEDEROWICZ WALTER M Former Director
Sold at will
$134.89K 7,548 at 17.87
43.0%
Not planned
9 Apr 2025
FIEDEROWICZ WALTER M Former Director
Sold at will
$132.16K 7,000 at 18.88
28.5%
Not planned
3 Apr 2025
FIEDEROWICZ WALTER M Former Director
Sold at will
$95.80K 5,000 at 19.16
16.9%
Not planned
26 Mar 2025
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$216.00K 10,000 at 21.60
1.8%
Not planned
25 Mar 2025
Sold at will
$216.33K 10,000 at 21.63
25.3%
Not planned
24 Mar 2025
Progler Christopher J EVP, Chief Technology Officer
Bought on a plan
$215.87K 10,000 at 21.59
4.7%
Bought on a plan
19 Mar 2025
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$216.00K 10,000 at 21.60
1.8%
Not planned
5 Mar 2025
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$209.00K 10,000 at 20.90
1.8%
Not planned
17 Jan 2025
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$244.70K 10,000 at 24.47
1.7%
Not planned
16 Jan 2025
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$213.50K 8,750 at 24.40
1.5%
Not planned
7 Jan 2025
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$277.09K 11,250 at 24.63
8.7%
Not planned
6 Jan 2025
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$273.26K 11,250 at 24.29
8.0%
Not planned
6 Jan 2025
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$250.20K 10,000 at 25.02
1.7%
Not planned
3 Jan 2025
Sold at will
$241.30K 10,000 at 24.13
23.8%
Not planned
2 Jan 2025
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will 2×
$421.75K 17,500 at 24.10
3.3%
Not planned
24 Dec 2024
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$420.00K 17,500 at 24.00
3.2%
Not planned
24 Dec 2024
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$267.75K 11,250 at 23.80
9.9%
Not planned
24 Dec 2024
Sold at will
$240.10K 10,000 at 24.01
16.7%
Not planned
20 Dec 2024
LEWIS ADAM M Director
Sold at will
$476.17K 19,750 at 24.11
47.0%
Not planned
20 Dec 2024
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will
$212.89K 8,750 at 24.33
1.6%
Not planned
19 Dec 2024
Progler Christopher J EVP, Chief Technology Officer
Sold at will 6×
$1.57M 63,000 at 24.85
22.3%
Not planned
19 Dec 2024
Lee Kang Jyh CHIEF EXECUTIVE OFFICER
Sold at will 2×
$505.40K 20,000 at 25.27
3.7%
Not planned
19 Dec 2024
TYSON MITCHELL G Director
Sold at will
$501.20K 20,000 at 25.06
23.2%
Not planned
3 Jan 2023
TYSON MITCHELL G Director
Sold, plan not stated
$34.66K 2,000 at 17.33
3.4%
1 Dec 2022
TYSON MITCHELL G Director
Sold, plan not stated
$37.88K 2,000 at 18.94
3.3%
1 Nov 2022
TYSON MITCHELL G Director
Sold, plan not stated
$33.06K 2,000 at 16.53
3.2%
3 Oct 2022
TYSON MITCHELL G Director
Sold, plan not stated
$30.00K 2,000 at 15.00
3.1%
1 Sep 2022
TYSON MITCHELL G Director
Sold, plan not stated
$32.94K 2,000 at 16.47
3.0%
1 Aug 2022
TYSON MITCHELL G Director
Sold, plan not stated
$47.08K 2,000 at 23.54
2.9%
1 Jul 2022
TYSON MITCHELL G Director
Sold, plan not stated
$38.16K 2,000 at 19.08
2.8%
1 Jun 2022
TYSON MITCHELL G Director
Sold, plan not stated
$43.82K 2,000 at 21.91
2.8%
2 May 2022
TYSON MITCHELL G Director
Sold, plan not stated
$30.00K 2,000 at 15.00
2.7%
4 Apr 2022
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$189.93K 11,481 at 16.54
6.7%
1 Apr 2022
TYSON MITCHELL G Director
Sold, plan not stated
$34.00K 2,000 at 17.00
2.6%
1 Mar 2022
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated 2×
$179.60K 10,000 at 17.96
5.9%
1 Mar 2022
TYSON MITCHELL G Director
Sold, plan not stated
$36.78K 2,000 at 18.39
2.6%
28 Feb 2022
KIRLIN PETER S Chief Executive Officer
Sold, plan not stated
$275.22K 15,000 at 18.35
3.3%
23 Feb 2022
KIRLIN PETER S Chief Executive Officer
Sold, plan not stated
$6.04K 300 at 20.14
0.1%
1 Feb 2022
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$207.01K 11,519 at 17.97
6.7%
1 Feb 2022
TYSON MITCHELL G Director
Sold, plan not stated
$36.00K 2,000 at 18.00
2.5%
18 Jan 2022
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$189.59K 9,688 at 19.57
5.7%
14 Jan 2022
KIRLIN PETER S Chief Executive Officer
Sold, plan not stated 2×
$94.37K 4,821 at 19.57
1.1%
13 Jan 2022
KIRLIN PETER S Chief Executive Officer
Sold, plan not stated
$1.94K 100 at 19.40
0.0%
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