Insider trading

Period: 120 months Stock: STRO Plan: Not on a plan × + 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.

34 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.

34 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.

34 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.

34 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.
34 decisions over 120 months Remove this filter
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
34 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.

34 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
15 Oct 2025
MATSUI CONNIE Director
Bought
$39.95K 50,000 at 0.80
opened
First buy on file
15 Oct 2025
Bought
$16.00K 19,750 at 0.81
opened
First buy on file
15 Oct 2025
Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER
Bought
$13.61K 17,000 at 0.80
31.0%
First buy on file
15 Oct 2025
Chung Jane Chief Executive Officer
Bought
$10.01K 12,500 at 0.80
11.3%
First buy on file
15 Oct 2025
Pauling David Chief Admin. Ofcr. & GC
Bought
$9.99K 12,504 at 0.80
21.1%
First buy on file
28 Aug 2023
Shtylla Brunilda Chief Business Officer
Sold at will
$72.59K 15,428 at 4.71
100%
Sold half or more
25 Aug 2023
Shtylla Brunilda Chief Business Officer
Sold at will
$53.28K 11,613 at 4.59
47.3%
Not planned
14 Mar 2022
NEWELL WILLIAM J CEO · indirect
Bought
$77.51K 10,000 at 7.75
9.4%
First buy on file
28 Sep 2021
Vasquez Nicki Chief Port. Strat & Alnce Ofcr
Sold, plan not stated
$72.72K 3,906 at 18.62
34.9%
26 Jan 2021
Hallam Trevor Chief Scientific Officer
Sold, plan not stated 2×
$61.53K 2,393 at 25.71
4.1%
28 Dec 2020
Hallam Trevor Chief Scientific Officer
Sold, plan not stated
$53.53K 2,393 at 22.37
6.1%
27 Nov 2020
Hallam Trevor Chief Scientific Officer
Sold, plan not stated
$40.71K 2,393 at 17.01
6.1%
5 Nov 2020
Hallam Trevor Chief Scientific Officer
Sold, plan not stated
$251.27K 16,751 at 15.00
31.3%
28 Sep 2020
Hallam Trevor Chief Scientific Officer
Sold, plan not stated
$10.01K 975 at 10.26
3.4%
18 Sep 2020
Freund John Gordon Director · indirect
Sold, plan not stated
$4.80M 400,000 at 12.00
41.7%
11 Sep 2020
Freund John Gordon Director · indirect
Sold, plan not stated
$5.00M 500,000 at 10.00
34.2%
26 Aug 2020
Hallam Trevor Chief Scientific Officer
Sold, plan not stated
$8.82K 975 at 9.04
5.5%
19 Aug 2020
Freund John Gordon Director · indirect
Sold, plan not stated
$4.36M 500,000 at 8.72
25.5%
27 Jul 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$7.86K 975 at 8.06
5.2%
26 Jun 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$7.82K 975 at 8.02
4.9%
26 May 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$9.75K 975 at 10.00
4.7%
14 May 2020
Bought
$500.00K 64,516 at 7.75
63.2%
First buy on file
14 May 2020
MOLINA ARTURO MD Chief Medical Officer
Bought
$50.00K 6,451 at 7.75
115%
First buy on file
14 May 2020
FITZPATRICK LINDA A Chief People & Comm. Officer
Bought
$24.99K 3,225 at 7.75
55.8%
First buy on file
27 Apr 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$9.16K 973 at 9.41
4.5%
27 Apr 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$22.38 2 at 11.19
0.0%
26 Mar 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$9.45K 975 at 9.69
4.3%
26 Feb 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$10.21K 975 at 10.47
4.1%
27 Jan 2020
Hallam Trevor Chief Science Officer
Sold, plan not stated
$10.25K 975 at 10.51
4.0%
26 Dec 2019
Hallam Trevor Chief Science Officer
Sold, plan not stated
$10.80K 975 at 11.08
3.8%
26 Nov 2019
Hallam Trevor Chief Science Officer
Sold, plan not stated
$10.41K 975 at 10.68
3.7%
28 Oct 2019
Hallam Trevor Chief Science Officer
Sold, plan not stated
$9.73K 975 at 9.98
3.5%
1 Oct 2018
Merck & Co., Inc. 10% owner · indirect
Bought
$10.00M 666,666 at 15.00
32.4%
First buy on file
1 Oct 2018
Petree Daniel H Director · indirect
Sold, plan not stated
$1.83K 122 at 15.00
38.9%
Showing 1–34 of 34.