Insider trading

Period: 120 months Stock: TWST + 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.

564 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.

564 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.

564 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.

564 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.
564 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
564 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.

564 decisions over 120 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)
2 Oct 2026
Finn Patrick John President and COO
Sold at will
$4.86M 25,714 at 188.88
12.2%
Not planned
2 Oct 2026
Green Paula SVP of Human Resources
Sold at will
$1.91M 10,088 at 188.88
8.6%
Not planned
2 Oct 2026
Cho Dennis See Remarks
Sold at will
$1.80M 9,514 at 188.88
13.0%
Not planned
2 Oct 2026
Laponis Adam Chief Financial Officer
Sold at will
$1.52M 8,057 at 188.88
7.4%
Not planned
2 Oct 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$279.93K 1,482 at 188.88
3.3%
Not planned
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)
21 Sep 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$279.18K 1,687 at 165.49
0.3%
Not planned
21 Sep 2026
Cho Dennis See Remarks
Sold at will
$57.59K 348 at 165.49
0.5%
Not planned
21 Sep 2026
Green Paula SVP of Human Resources
Sold at will
$48.65K 294 at 165.49
0.3%
Not planned
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)
8 Sep 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$282.28K 2,302 at 122.62
0.3%
Not planned
8 Sep 2026
Green Paula SVP of Human Resources
Sold at will
$111.22K 907 at 122.62
0.8%
Not planned
8 Sep 2026
Cho Dennis See Remarks
Sold at will
$50.52K 412 at 122.62
0.6%
Not planned
8 Sep 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$29.18K 238 at 122.62
0.5%
Not planned
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)
24 Aug 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$120.22K 854 at 140.77
1.9%
Not planned
21 Aug 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$923.26K 6,639 at 139.07
0.8%
Not planned
21 Aug 2026
Finn Patrick John President and COO
Sold at will
$562.66K 4,046 at 139.07
1.9%
Not planned
21 Aug 2026
Laponis Adam Chief Financial Officer
Sold at will
$273.26K 1,965 at 139.07
1.8%
Not planned
21 Aug 2026
Cho Dennis See Remarks
Sold at will
$222.23K 1,598 at 139.07
2.1%
Not planned
21 Aug 2026
Green Paula SVP of Human Resources
Sold at will
$189.13K 1,360 at 139.07
1.1%
Not planned
21 Aug 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$93.04K 669 at 139.07
1.4%
Not planned
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)
12 Aug 2026
BLAKE KATRYN Director
Sold at will
$275.25K 2,240 at 122.88
11.5%
Not planned
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)
3 Aug 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$435.22K 5,101 at 85.32
0.6%
Not planned
3 Aug 2026
Finn Patrick John President and COO
Sold at will
$246.41K 2,888 at 85.32
1.1%
Not planned
3 Aug 2026
Green Paula SVP of Human Resources
Sold at will
$96.67K 1,133 at 85.32
0.9%
Not planned
3 Aug 2026
Cho Dennis See Remarks
Sold at will
$91.29K 1,070 at 85.32
1.0%
Not planned
3 Aug 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$14.25K 167 at 85.32
0.4%
Not planned
23 Jul 2026
Finn Patrick John President and COO
Sold at will
$210.13K 2,238 at 93.89
0.8%
Not planned
9 Jul 2026
Laponis Adam Chief Financial Officer
Sold at will
$226.31K 2,399 at 94.33
2.1%
Not planned
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)
22 Jun 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$147.40K 1,688 at 87.32
0.2%
Not planned
22 Jun 2026
Cho Dennis See Remarks
Sold at will
$30.21K 346 at 87.32
0.3%
Not planned
22 Jun 2026
Green Paula SVP of Human Resources
Sold at will
$25.41K 291 at 87.32
0.2%
Not planned
15 Jun 2026
Green Paula SVP of Human Resources
Sold at will 2×
$2.13M 26,137 at 81.67
17.8%
Not planned
8 Jun 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$158.20K 2,265 at 69.84
0.3%
Not planned
8 Jun 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will 2×
$94.05K 1,359 at 69.20
2.8%
Not planned
8 Jun 2026
Green Paula SVP of Human Resources
Sold at will
$61.74K 884 at 69.84
0.7%
Not planned
8 Jun 2026
Cho Dennis See Remarks
Sold at will
$28.08K 402 at 69.84
0.3%
Not planned
29 May 2026
Cho Dennis See Remarks
Sold on a plan
$990.80K 14,205 at 69.75
10.6%
Planned (10b5-1)
Showing 1–50 of 564. Page 1 of 12 Older →