Insider trading

Period: 12 months Stock: TWST Plan: Scheduled (10b5-1) × + 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.

35 decisions over 12 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.

35 decisions over 12 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.

35 decisions over 12 months
The trade

Minimum amount

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

35 decisions over 12 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.
35 decisions over 12 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
35 decisions over 12 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.

35 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
5 Oct 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan 8×
$919.37K 4,548 at 202.15
0.8%
Planned (10b5-1)
2 Oct 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan
$8.64M 45,736 at 188.88
7.5%
Planned (10b5-1)
1 Oct 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan
$131.00K 655 at 200.00
0.1%
Planned (10b5-1)
24 Sep 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan 10×
$922.91K 5,203 at 177.38
0.8%
Planned (10b5-1)
17 Sep 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan 13×
$56.33M 356,546 at 157.99
36.5%
Planned (10b5-1)
25 Aug 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan 5×
$6.32M 41,570 at 151.98
5.1%
Planned (10b5-1)
19 Aug 2026
Cho Dennis See Remarks
Sold on a plan
$1.84M 14,205 at 129.75
15.8%
Planned (10b5-1)
18 Aug 2026
Finn Patrick John President and COO
Sold on a plan 7×
$9.22M 78,355 at 117.64
26.7%
Planned (10b5-1)
12 Aug 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan
$2.50M 19,952 at 125.08
2.4%
Planned (10b5-1)
10 Aug 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan
$14.18M 113,318 at 125.16
12.2%
Planned (10b5-1)
7 Aug 2026
CHESS ROBERT Director
Sold on a plan
$2.04M 18,417 at 110.89
46.6%
Planned (10b5-1)
5 Aug 2026
Cho Dennis See Remarks
Sold on a plan
$1.56M 14,205 at 109.75
13.6%
Planned (10b5-1)
25 Jun 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan
$1.79M 18,880 at 95.00
2.2%
Planned (10b5-1)
24 Jun 2026
Cho Dennis See Remarks
Sold on a plan
$1.27M 14,205 at 89.75
11.9%
Planned (10b5-1)
29 May 2026
Cho Dennis See Remarks
Sold on a plan
$990.80K 14,205 at 69.75
10.6%
Planned (10b5-1)
29 May 2026
Laponis Adam Chief Financial Officer
Sold on a plan
$280.00K 4,000 at 70.00
3.4%
Planned (10b5-1)
28 May 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan 4×
$1.12M 16,470 at 67.91
1.9%
Planned (10b5-1)
28 May 2026
Sold on a plan
$170.00K 2,500 at 68.00
10.1%
Planned (10b5-1)
27 May 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan 2×
$1.63M 25,017 at 65.29
2.9%
Planned (10b5-1)
26 May 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan
$1.58M 24,282 at 65.08
2.8%
Planned (10b5-1)
26 May 2026
Sold on a plan
$30.52K 500 at 61.04
2.0%
Planned (10b5-1)
27 Apr 2026
Sold on a plan
$30.92K 500 at 61.83
1.9%
Planned (10b5-1)
22 Apr 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan 2×
$526.29K 8,061 at 65.29
0.9%
Planned (10b5-1)
21 Apr 2026
Leproust Emily M. Chief Executive Officer
Sold on a plan
$104.67K 1,610 at 65.01
0.2%
Planned (10b5-1)
17 Apr 2026
Laponis Adam Chief Financial Officer
Sold on a plan
$240.00K 4,000 at 60.00
3.3%
Planned (10b5-1)
14 Apr 2026
Laponis Adam Chief Financial Officer
Sold on a plan
$165.00K 3,000 at 55.00
2.4%
Planned (10b5-1)
1 Apr 2026
Sold on a plan
$51.00K 1,000 at 51.00
3.7%
Planned (10b5-1)
17 Mar 2026
CHESS ROBERT Director
Sold on a plan
$470.00K 10,000 at 47.00
32.2%
Planned (10b5-1)
17 Feb 2026
Finn Patrick John President and COO
Sold on a plan 4×
$3.56M 68,967 at 51.65
19.3%
Planned (10b5-1)
13 Feb 2026
Finn Patrick John President and COO
Sold on a plan
$87.57K 1,750 at 50.04
0.6%
Planned (10b5-1)
12 Feb 2026
Laponis Adam Chief Financial Officer
Sold on a plan
$350.00K 7,000 at 50.00
5.1%
Planned (10b5-1)
12 Feb 2026
Finn Patrick John President and COO
Sold on a plan
$175.79K 3,500 at 50.23
1.1%
Planned (10b5-1)
11 Feb 2026
Cho Dennis See Remarks
Sold on a plan
$249.65K 5,000 at 49.93
3.5%
Planned (10b5-1)
13 Jan 2026
Finn Patrick John President and COO
Sold on a plan
$931.16K 23,279 at 40.00
6.9%
Planned (10b5-1)
13 Jan 2026
Laponis Adam Chief Financial Officer
Sold on a plan
$120.00K 3,000 at 40.00
2.1%
Planned (10b5-1)
Showing 1–35 of 35.