Insider trading

Period: 120 months Stock: WGS Type of trade: Bought × + Add filter Clear all
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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.

39 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.

39 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.

39 decisions over 120 months Remove this filter
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

39 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.
39 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
39 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.

39 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
5 Jun 2026
Casdin Capital, LLC Director · indirect
Bought
$2.64M 50,000 at 52.86
1.4%
4 Jun 2026
Casdin Capital, LLC Director · indirect
Bought
$8.47M 150,000 at 56.44
4.3%
Largest buy in 3 yrs
20 May 2026
Casdin Capital, LLC Director · indirect
Bought
$6.13M 140,000 at 43.81
4.2%
19 May 2026
Casdin Capital, LLC Director · indirect
Bought
$7.88M 185,000 at 42.60
5.8%
Largest buy in 3 yrs
18 May 2026
Casdin Capital, LLC Director · indirect
Bought
$7.45M 175,000 at 42.55
5.8%
Largest buy in 3 yrs
15 May 2026
Meister Keith A. Director · indirect
Bought 2×
$1.80M 46,273 at 38.91
1.0%
14 May 2026
Meister Keith A. Director · indirect
Bought 2×
$5.51M 140,000 at 39.39
3.0%
13 May 2026
Meister Keith A. Director · indirect
Bought 2×
$6.45M 165,000 at 39.09
3.7%
11 May 2026
Meister Keith A. Director · indirect
Bought 3×
$19.64M 500,000 at 39.29
12.7%
8 May 2026
Meister Keith A. Director · indirect
Bought 4×
$6.96M 171,389 at 40.59
4.6%
7 May 2026
Meister Keith A. Director · indirect
Bought 6×
$20.21M 533,758 at 37.86
16.5%
Largest buy in 3 yrs
5 Mar 2026
Meister Keith A. Director · indirect
Bought 5×
$11.37M 140,026 at 81.19
4.5%
Largest buy in 3 yrs
3 Mar 2026
Meister Keith A. Director · indirect
Bought 5×
$2.09M 29,495 at 70.89
1.0%
14 May 2025
Meister Keith A. Director · indirect
Bought 2×
$3.01M 50,000 at 60.16
1.7%
8 May 2025
Meister Keith A. Director · indirect
Bought 3×
$5.60M 100,000 at 56.01
3.4%
First buy in 3+ yrs
4 Jun 2024
Bought
$675.48K 30,000 at 22.52
1.0%
3 Jun 2024
Bought
$2.08M 100,000 at 20.82
3.4%
29 May 2024
Bought
$842.60K 40,000 at 21.07
1.4%
28 May 2024
Bought
$377.17K 18,304 at 20.61
0.6%
24 May 2024
Bought
$2.90M 144,196 at 20.12
5.2%
Largest buy in 3 yrs
23 May 2024
Bought
$146.92K 7,500 at 19.59
0.3%
13 May 2024
Bought
$1.17M 50,000 at 23.31
1.8%
Largest buy in 3 yrs
5 Mar 2024
Bought
$7.94K 900 at 8.83
0.0%
4 Mar 2024
Bought
$349.71K 40,000 at 8.74
1.5%
First buy on file
17 Nov 2023
Ryan Jason Executive Chairman · indirect
Bought
$89.18K 58,000 at 1.54
102%
Largest buy in 3 yrs
16 Nov 2023
Ryan Jason Executive Chairman · indirect
Bought
$72.19K 56,742 at 1.27
opened
First buy on file
8 Nov 2023
Bought
$14.89K 10,000 at 1.49
91.6%
+92% of stake
17 Aug 2023
Bought
$25.52K 5,000 at 5.10
84.5%
+84% of stake
18 May 2023
Bought
$29.50K 5,000 at 5.90
545%
First buy on file
31 Jan 2023
Casdin Eli Director · indirect
Bought 2×
$30.00M 85,714,285 at 0.35
×40
+3983% of stake
31 Jan 2023
Bought
$10.00M 28,571,428 at 0.35
30.2%
+30% of stake
26 Jan 2023
OPKO HEALTH, INC. 10% owner
Bought
$5.00M 14,285,714 at 0.35
17.9%
First buy on file
28 Nov 2022
Stueland Katherine Chief Executive Officer
Bought
$100.00K 185,185 at 0.54
opened
First buy on file
20 May 2022
Schadt Eric President & Chief R&D Officer
Bought
$192.48K 100,000 at 1.92
69.7%
First buy on file
29 Apr 2022
Casdin Eli Director · indirect
Bought
$45.75M 11,437,500 at 4.00
229%
First buy on file
29 Apr 2022
Meister Keith A. Director · indirect
Bought
$45.75M 11,437,500 at 4.00
73.8%
First buy on file
29 Apr 2022
Bought
$25.00M 6,250,000 at 4.00
7.1%
First buy on file
29 Apr 2022
BTO Sema4 Holdings L.P. 10% owner · indirect
Bought 3×
$10.00M 2,500,000 at 4.00
10.3%
First buy on file
29 Apr 2022
Bought 3×
$10.00M 2,500,000 at 4.00
10.3%
First buy on file
Showing 1–39 of 39.