Insider trading

Period: 120 months Stock: ZBIO Minimum amount: $1M × + 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.

15 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.

15 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.

15 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.

15 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.
15 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
15 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.

15 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
18 May 2026
MOULDER LEON O JR Chief Executive Officer · indirect
Bought
$1.01M 60,000 at 16.88
162%
+162% of stake
31 Mar 2026
Fairmount Funds Management LLC Director · indirect
Bought
$3.00M 150,000 at 20.00
6.8%
31 Mar 2026
Lu Hongbo Director · indirect
Bought 2×
$1.57M 78,768 at 19.93
22.6%
+23% of stake
2 Feb 2026
MOULDER LEON O JR Chief Executive Officer
Bought
$1.02M 57,000 at 17.96
15.6%
Largest buy in 3 yrs
9 Oct 2025
SR ONE CAPITAL MANAGEMENT, LLC 10% owner · indirect
Bought 2×
$2.40M 126,315 at 19.00
7.1%
9 Oct 2025
ENRIGHT PATRICK G Director · indirect
Bought
$2.00M 105,265 at 19.00
6.1%
9 Oct 2025
Nunn Jason Raleigh Director · indirect
Bought
$1.20M 63,158 at 19.00
5.7%
7 Oct 2025
Fairmount Funds Management LLC Director · indirect
Bought
$6.01M 316,219 at 19.00
16.7%
Largest buy in 3 yrs
7 Oct 2025
Lu Hongbo Director · indirect
Bought
$5.00M 263,160 at 19.00
447%
Largest buy in 3 yrs
16 Sep 2024
SR ONE CAPITAL MANAGEMENT, LLC 10% owner · indirect
Bought 3×
$38.00M 2,235,294 at 17.00
opened
First buy on file
16 Sep 2024
Enavate Sciences GP, LLC 10% owner · indirect
Bought
$15.00M 882,353 at 17.00
30.6%
First buy on file
16 Sep 2024
Nunn Jason Raleigh Director · indirect
Bought 2×
$15.00M 882,352 at 17.00
82.9%
First buy on file
16 Sep 2024
ENRIGHT PATRICK G Director · indirect
Bought
$7.48M 440,000 at 17.00
132%
First buy on file
16 Sep 2024
Fairmount Funds Management LLC Director · indirect
Bought
$5.10M 300,000 at 17.00
23.0%
First buy on file
13 Sep 2024
Lu Hongbo Director · indirect
Bought 2×
$2.00M 117,646 at 17.00
opened
First buy on file
Showing 1–15 of 15.