Insider trading

Period: 120 months Stock: ZLAB Minimum amount: $100K × + 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.

116 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.

116 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.

116 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.

116 decisions over 120 months Remove this filter
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.
116 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
116 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.

116 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
12 Aug 2026
Lis William Director
Sold on a plan
$212.65K 8,506 at 25.00
16.9%
Planned (10b5-1)
30 Jun 2026
Du Ying Chairperson & CEO
Sold at will
$130.22K 7,026 at 18.53
0.6%
Not planned
26 Jun 2026
Du Ying Chairperson & CEO
Sold at will
$428.55K 24,543 at 17.46
2.0%
Not planned
22 Jun 2026
Lis William Director
Sold on a plan
$127.35K 7,040 at 18.09
12.2%
Planned (10b5-1)
18 May 2026
Du Ying Chairperson & CEO
Sold on a plan
$949.77K 50,000 at 19.00
4.3%
Planned (10b5-1)
15 May 2026
Du Ying Chairperson & CEO
Sold on a plan
$1.04M 50,000 at 20.74
4.3%
Planned (10b5-1)
14 May 2026
Du Ying Chairperson & CEO
Sold on a plan
$1.00M 50,000 at 20.09
4.3%
Planned (10b5-1)
13 May 2026
Du Ying Chairperson & CEO
Sold on a plan 2×
$998.47K 50,000 at 19.97
4.3%
Planned (10b5-1)
2 Apr 2026
Amado Rafael See Remarks
Sold at will
$202.06K 9,910 at 20.39
14.2%
Not planned
2 Apr 2026
Smiley Joshua L See Remarks
Sold at will
$196.03K 9,614 at 20.39
7.4%
Not planned
2 Apr 2026
Du Ying Chairperson & CEO
Sold at will
$113.69K 5,576 at 20.39
0.5%
Not planned
2 Apr 2026
Chen Yajing Chief Financial Officer
Sold at will
$106.01K 5,199 at 20.39
13.8%
Not planned
9 Mar 2026
Du Ying Chairperson & CEO
Sold on a plan
$951.47K 50,000 at 19.03
4.9%
Planned (10b5-1)
6 Mar 2026
Du Ying Chairperson & CEO
Sold on a plan
$970.94K 50,000 at 19.42
4.9%
Planned (10b5-1)
5 Mar 2026
Du Ying Chairperson & CEO
Sold on a plan
$961.06K 50,000 at 19.22
4.9%
Planned (10b5-1)
5 Mar 2026
Edmondson Frazor Titus III Chief Legal Officer
Sold on a plan
$296.75K 15,569 at 19.06
81.6%
Sold half or more
4 Mar 2026
Du Ying Chairperson & CEO
Sold on a plan 2×
$958.15K 50,000 at 19.16
4.9%
Planned (10b5-1)
3 Mar 2026
Amado Rafael See Remarks
Sold on a plan
$173.80K 10,000 at 17.38
19.1%
Planned (10b5-1)
31 Dec 2025
Amado Rafael See Remarks
Sold at will
$188.04K 10,787 at 17.43
17.1%
Not planned
16 Dec 2025
Edmondson Frazor Titus III Chief Legal Officer
Sold on a plan
$148.28K 8,651 at 17.14
31.2%
Planned (10b5-1)
21 Nov 2025
Edmondson Frazor Titus III Chief Legal Officer
Sold on a plan
$283.41K 14,328 at 19.78
34.1%
Planned (10b5-1)
10 Sep 2025
Smiley Joshua L See Remarks
Bought
$289.10K 10,000 at 28.91
13.1%
Largest buy in 3 yrs
18 Aug 2025
Smiley Joshua L See Remarks
Sold at will
$240.64K 6,641 at 36.24
8.0%
Not planned
13 Aug 2025
Du Ying Chairperson & CEO
Sold on a plan
$1.65M 46,387 at 35.47
8.0%
Planned (10b5-1)
12 Aug 2025
Du Ying Chairperson & CEO
Sold on a plan
$1.71M 50,000 at 34.25
8.5%
Planned (10b5-1)
11 Aug 2025
Du Ying Chairperson & CEO
Sold on a plan
$1.73M 50,000 at 34.64
8.5%
Planned (10b5-1)
8 Aug 2025
Du Ying Chairperson & CEO
Sold on a plan
$1.74M 50,000 at 34.74
8.5%
Planned (10b5-1)
8 Aug 2025
Chen Yajing Chief Financial Officer
Sold on a plan
$139.30K 4,096 at 34.01
19.5%
Planned (10b5-1)
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
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
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)
4 Mar 2025
Du Ying Chairperson & CEO
Sold on a plan 3×
$1.67M 50,000 at 33.48
9.2%
Planned (10b5-1)
Showing 1–50 of 116. Page 1 of 3 Older →