Insider trading

Period: 120 months Stock: PLAB Role: Other officers × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

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

97 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.

97 decisions over 120 months Remove this filter
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.

97 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.

97 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.
97 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
97 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.

97 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
25 Sep 2026
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$288.52K 9,500 at 30.37
12.6%
Not planned
17 Apr 2026
ZHANG RUI VP, CAO & Corporate Controller
Sold at will
$212.77K 4,556 at 46.70
14.4%
Not planned
14 Apr 2026
Wang Hsueh-Chun SVP/COO IC & US/EU Mnstrm Ops
Sold at will
$872.03K 19,250 at 45.30
14.5%
Not planned
9 Apr 2026
Wang Hsueh-Chun SVP/COO IC & US/EU Mnstrm Ops
Sold at will
$525.47K 11,875 at 44.25
8.2%
Not planned
8 Apr 2026
Wang Hsueh-Chun SVP/COO IC & US/EU Mnstrm Ops
Sold at will
$426.90K 10,000 at 42.69
6.5%
Not planned
8 Apr 2026
ZHANG RUI VP, CAO & Corporate Controller
Sold at will
$76.21K 1,752 at 43.50
5.2%
Not planned
1 Apr 2026
Wang Hsueh-Chun SVP/COO IC & US/EU Mnstrm Ops
Sold at will 3×
$420.83K 10,000 at 42.08
6.1%
Not planned
16 Jan 2026
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$218.06K 6,250 at 34.89
7.6%
Not planned
13 Jan 2026
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$252.75K 7,500 at 33.70
8.4%
Not planned
12 Dec 2025
Progler Christopher J EVP, Chief Technology Officer
Sold at will
$894.50K 25,000 at 35.78
13.1%
Not planned
12 Dec 2025
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$522.36K 13,750 at 37.99
13.3%
Not planned
1 Dec 2025
Progler Christopher J EVP, Chief Technology Officer
Sold on a plan
$225.15K 10,000 at 22.52
5.0%
Planned (10b5-1)
3 Sep 2025
Park Han Kyung SVP & GM of FPD Ops
Sold at will
$330.00K 15,000 at 22.00
12.7%
Not planned
2 Sep 2025
Progler Christopher J EVP, Chief Technology Officer
Sold on a plan
$219.30K 10,000 at 21.93
4.7%
Planned (10b5-1)
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
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
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
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
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
4 Apr 2022
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$189.93K 11,481 at 16.54
6.7%
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 Feb 2022
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$207.01K 11,519 at 17.97
6.7%
18 Jan 2022
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$189.59K 9,688 at 19.57
5.7%
4 Jan 2022
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$72.34K 3,750 at 19.29
2.6%
31 Dec 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$171.00K 9,000 at 19.00
6.5%
29 Dec 2021
Lee Kang Jyh President, Asia IC Photomask
Sold, plan not stated
$133.36K 7,075 at 18.85
4.0%
15 Dec 2021
Lee Kang Jyh President, Asia IC Photomask
Sold, plan not stated
$75.41K 4,500 at 16.76
2.5%
1 Dec 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$18.80K 1,400 at 13.43
1.1%
1 Oct 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$51.41K 3,750 at 13.71
2.8%
15 Sep 2021
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$69.55K 5,000 at 13.91
4.1%
1 Sep 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$107.70K 7,156 at 15.05
5.0%
27 Aug 2021
Lee Kang Jyh President, Asia IC Photomask
Sold, plan not stated
$214.28K 15,000 at 14.29
7.6%
16 Aug 2021
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$65.70K 5,000 at 13.14
4.1%
2 Aug 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$18.82K 1,400 at 13.44
1.0%
15 Jul 2021
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$64.55K 5,000 at 12.91
4.1%
6 Jul 2021
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$51.88K 4,000 at 12.97
3.3%
1 Jun 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$37.63K 2,775 at 13.56
2.0%
3 May 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated 2×
$127.55K 9,906 at 12.88
6.6%
18 Mar 2021
Lee Kang Jyh President, Asia IC Photomask
Sold, plan not stated
$123.37K 10,000 at 12.34
5.2%
1 Mar 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$36.03K 3,000 at 12.01
2.0%
19 Jan 2021
Lee Kang Jyh President, Asia IC Photomask
Sold, plan not stated
$143.82K 12,000 at 11.99
5.9%
4 Jan 2021
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$36.09K 3,225 at 11.19
2.6%
4 Jan 2021
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$33.57K 3,000 at 11.19
2.0%
1 Dec 2020
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$98.27K 8,340 at 11.78
6.8%
2 Nov 2020
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$29.58K 3,000 at 9.86
2.6%
9 Oct 2020
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$53.20K 5,000 at 10.64
5.3%
1 Oct 2020
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated
$40.20K 4,000 at 10.05
3.3%
9 Sep 2020
Burr Richelle E EVP, CAO,General Counsel & Sec
Sold, plan not stated
$44.40K 5,000 at 8.88
5.3%
1 Sep 2020
Progler Christopher J EVP, Chief Technology Officer
Sold, plan not stated 2×
$113.73K 11,340 at 10.03
8.9%
Showing 1–50 of 97. Page 1 of 2 Older →