Insider trading

Period: 120 months Stock: ZLAB Role: CEO × + 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.

49 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.

49 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.

49 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.

49 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.
49 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
49 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.

49 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
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
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)
6 Apr 2026
Du Ying Chairperson & CEO
Sold at will
$54.25K 2,653 at 20.45
0.2%
Not planned
2 Apr 2026
Du Ying Chairperson & CEO
Sold at will
$113.69K 5,576 at 20.39
0.5%
Not planned
11 Mar 2026
Du Ying Chairperson & CEO
Sold on a plan
$20.36K 1,067 at 19.08
0.1%
Planned (10b5-1)
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)
4 Mar 2026
Du Ying Chairperson & CEO
Sold on a plan 2×
$958.15K 50,000 at 19.16
4.9%
Planned (10b5-1)
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)
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
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)
4 Apr 2025
Du Ying Chairperson & CEO
Sold at will
$97.50K 2,945 at 33.11
0.6%
Not planned
2 Apr 2025
Du Ying Chairperson & CEO
Sold at will
$208.47K 5,808 at 35.89
1.2%
Not planned
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)
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)
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
2 Apr 2024
Du Ying Chairperson & CEO
Sold at will 2×
$93.47K 5,787 at 16.15
0.5%
Not planned
3 Jan 2024
Du Ying Chairperson & CEO
Sold at will
$218.90K 8,380 at 26.12
0.7%
Not planned
7 Sep 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 8×
$4.49M 29,785 at 150.73
2.9%
3 Sep 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 4×
$3.50M 24,145 at 145.04
2.3%
2 Sep 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 4×
$4.19M 28,738 at 145.79
2.6%
1 Sep 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 7×
$4.17M 28,443 at 146.46
2.5%
3 Aug 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 7×
$3.84M 26,217 at 146.38
2.5%
2 Aug 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 7×
$12.27M 84,894 at 144.56
7.6%
2 Jul 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 4×
$4.78M 27,253 at 175.31
2.6%
1 Jul 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 6×
$14.73M 83,858 at 175.70
7.5%
2 Jun 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 7×
$1.68M 9,463 at 177.52
0.9%
1 Jun 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 8×
$17.91M 101,648 at 176.19
9.1%
4 May 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 15×
$7.74M 48,947 at 158.11
5.9%
3 May 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 10×
$10.04M 62,164 at 161.57
6.9%
7 Apr 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 6×
$2.95M 21,936 at 134.42
2.4%
6 Apr 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 7×
$4.89M 38,392 at 127.28
4.0%
5 Apr 2021
Du Ying Chairwoman & CEO
Sold, plan not stated 8×
$6.41M 50,784 at 126.19
5.0%
Showing 1–49 of 49.