Insider trading

Period: 120 months Stock: ZLAB + 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.

168 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.

168 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.

168 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.

168 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.
168 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
168 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.

168 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
8 Aug 2025
Amado Rafael See Remarks
Sold on a plan
$105.00K 3,000 at 35.00
6.6%
Planned (10b5-1)
2 Jul 2025
Du Ying Chairperson & CEO
Sold at will
$249.15K 7,072 at 35.23
1.3%
Not planned
30 Jun 2025
Du Ying Chairperson & CEO
Sold at will
$245.73K 6,918 at 35.52
1.3%
Not planned
26 Jun 2025
Du Ying Chairperson & CEO
Sold at will
$855.21K 23,669 at 36.13
4.4%
Not planned
26 Jun 2025
Edmondson Frazor Titus III Chief Legal Officer
Sold at will
$212.35K 5,877 at 36.13
13.1%
Not planned
26 Jun 2025
Chen Yajing Chief Financial Officer
Sold at will
$96.65K 2,675 at 36.13
11.3%
Not planned
20 Jun 2025
Lis William Director
Sold on a plan
$492.75K 13,814 at 35.67
28.2%
Planned (10b5-1)
2 Jun 2025
Chen Yajing Chief Financial Officer
Sold on a plan
$288.54K 9,618 at 30.00
35.6%
Planned (10b5-1)
14 May 2025
Du Ying Chairperson & CEO
Sold on a plan 2×
$1.30M 46,389 at 28.09
8.8%
Planned (10b5-1)
13 May 2025
Du Ying Chairperson & CEO
Sold on a plan 2×
$1.43M 50,000 at 28.57
9.4%
Planned (10b5-1)
12 May 2025
Du Ying Chairperson & CEO
Sold on a plan 2×
$1.47M 50,000 at 29.44
9.4%
Planned (10b5-1)
9 May 2025
Du Ying Chairperson & CEO
Sold on a plan 2×
$1.48M 50,000 at 29.62
9.4%
Planned (10b5-1)
9 May 2025
Morrison Scott W Director
Sold at will
$715.09K 23,799 at 30.05
50.1%
Sold half or more
4 Apr 2025
Smiley Joshua L See Remarks
Sold at will
$111.04K 3,354 at 33.11
4.7%
Not planned
4 Apr 2025
Amado Rafael See Remarks
Sold at will
$100.28K 3,029 at 33.11
6.3%
Not planned
4 Apr 2025
Du Ying Chairperson & CEO
Sold at will
$97.50K 2,945 at 33.11
0.6%
Not planned
4 Apr 2025
Edmondson Frazor Titus III Chief Legal Officer
Sold at will
$62.04K 1,874 at 33.11
5.8%
Not planned
4 Apr 2025
Chen Yajing Chief Financial Officer
Sold at will
$30.59K 924 at 33.11
3.3%
Not planned
2 Apr 2025
Smiley Joshua L See Remarks
Sold at will
$421.40K 11,740 at 35.89
15.6%
Not planned
2 Apr 2025
Amado Rafael See Remarks
Sold at will
$270.68K 7,541 at 35.89
15.0%
Not planned
2 Apr 2025
Du Ying Chairperson & CEO
Sold at will
$208.47K 5,808 at 35.89
1.2%
Not planned
2 Apr 2025
Chen Yajing Chief Financial Officer
Sold at will
$189.52K 5,280 at 35.89
17.2%
Not planned
2 Apr 2025
Edmondson Frazor Titus III Chief Legal Officer
Sold at will
$156.82K 4,369 at 35.89
13.8%
Not planned
17 Mar 2025
Amado Rafael See Remarks
Sold on a plan
$115.23K 3,000 at 38.41
8.9%
Planned (10b5-1)
5 Mar 2025
Du Ying Chairperson & CEO
Sold on a plan 2×
$1.65M 46,389 at 35.55
8.6%
Planned (10b5-1)
5 Mar 2025
GAYNOR RICHARD Director
Sold on a plan
$87.68K 2,500 at 35.07
5.4%
Planned (10b5-1)
4 Mar 2025
Du Ying Chairperson & CEO
Sold on a plan 3×
$1.67M 50,000 at 33.48
9.2%
Planned (10b5-1)
3 Mar 2025
Du Ying Chairperson & CEO
Sold on a plan 3×
$1.62M 50,000 at 32.44
9.2%
Planned (10b5-1)
28 Feb 2025
Du Ying Chairperson & CEO
Sold on a plan 3×
$1.72M 50,000 at 34.47
9.2%
Planned (10b5-1)
28 Feb 2025
Lis William Director
Sold on a plan
$494.70K 15,000 at 32.98
28.3%
Planned (10b5-1)
28 Feb 2025
Edmondson Frazor Titus III Chief Legal Officer
Sold on a plan
$479.66K 14,544 at 32.98
50.4%
Sold half or more
31 Dec 2024
Amado Rafael See Remarks
Sold at will
$199.29K 7,583 at 26.28
18.3%
Not planned
4 Nov 2024
Chen Yajing Chief Financial Officer
Sold at will
$5.12K 167 at 30.66
1.1%
Not planned
2 Oct 2024
Chen Yajing Chief Financial Officer
Sold at will
$7.64K 301 at 25.40
1.9%
Not planned
3 Sep 2024
GAYNOR RICHARD Director
Sold on a plan
$48.75K 2,500 at 19.50
5.1%
Planned (10b5-1)
19 Aug 2024
Edmondson Frazor Titus III Chief Legal Officer
Sold at will
$32.62K 1,924 at 16.95
6.2%
Not planned
16 Aug 2024
Smiley Joshua L See Remarks
Sold at will
$72.56K 4,352 at 16.67
9.1%
Not planned
15 Aug 2024
Chen Yajing Chief Financial Officer
Sold at will
$6.78K 422 at 16.06
2.8%
Not planned
12 Aug 2024
Amado Rafael See Remarks
Sold on a plan
$50.46K 3,115 at 16.20
13.2%
Planned (10b5-1)
1 Jul 2024
Lis William Director
Sold on a plan 2×
$180.09K 10,397 at 17.32
16.4%
Planned (10b5-1)
1 Jul 2024
Chen Kai-Xian Director
Sold at will
$133.46K 7,750 at 17.22
11.3%
Not planned
1 Jul 2024
Du Ying Chairperson & CEO
Sold at will
$122.57K 7,013 at 17.48
0.6%
Not planned
26 Jun 2024
Du Ying Chairperson & CEO
Sold at will
$428.53K 23,939 at 17.90
2.1%
Not planned
26 Jun 2024
Reinhart Harald See Remarks
Sold at will
$133.02K 7,431 at 17.90
10.6%
Not planned
26 Jun 2024
Edmondson Frazor Titus III Chief Legal Officer
Sold at will
$90.61K 5,062 at 17.90
16.3%
Not planned
26 Jun 2024
Chen Yajing Chief Financial Officer
Sold at will
$38.56K 2,154 at 17.90
13.6%
Not planned
14 May 2024
Edmondson Frazor Titus III Chief Legal Officer
Sold on a plan
$213.35K 10,000 at 21.33
37.9%
Planned (10b5-1)
13 May 2024
Smiley Joshua L See Remarks
Bought on a plan
$64.20K 3,000 at 21.40
10.5%
Bought on a plan
4 Apr 2024
Reinhart Harald See Remarks
Sold at will
$32.99K 2,105 at 15.67
3.9%
Not planned
4 Apr 2024
Smiley Joshua L See Remarks
Sold at will
$31.16K 1,988 at 15.67
6.5%
Not planned
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