Insider trading

Period: 12 months Stock: DUOL Role: Other officers × + 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.

23 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.

23 decisions over 12 months Remove this filter
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.

23 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.

23 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.
23 decisions over 12 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
23 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.

23 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
14 Sep 2026
Chen Stephen C. General Counsel
Sold on a plan 2×
$1.21M 8,072 at 149.33
15.6%
Planned (10b5-1)
18 Aug 2026
Glance Natalie Chief Engineering Officer
Sold on a plan 2×
$212.08K 1,539 at 137.80
0.9%
Planned (10b5-1)
17 Aug 2026
Glance Natalie Chief Engineering Officer
Sold on a plan
$355.24K 2,751 at 129.13
1.6%
Planned (10b5-1)
17 Aug 2026
Meese Robert Chief Business Officer
Sold at will
$174.84K 1,354 at 129.13
0.8%
Not planned
17 Aug 2026
Chen Stephen C. General Counsel
Sold at will
$132.23K 1,024 at 129.13
1.9%
Not planned
18 May 2026
Glance Natalie Chief Engineering Officer
Sold on a plan 2×
$381.66K 3,360 at 113.59
1.9%
Planned (10b5-1)
18 May 2026
Chen Stephen C. General Counsel
Sold on a plan 2×
$224.60K 1,977 at 113.61
3.6%
Planned (10b5-1)
15 May 2026
Glance Natalie Chief Engineering Officer
Sold on a plan
$216.36K 1,929 at 112.16
1.1%
Planned (10b5-1)
15 May 2026
Meese Robert Chief Business Officer
Sold at will
$159.27K 1,420 at 112.16
0.8%
Not planned
15 May 2026
Chen Stephen C. General Counsel
Sold on a plan
$91.97K 820 at 112.16
1.5%
Planned (10b5-1)
18 Feb 2026
Glance Natalie Chief Engineering Officer
Sold on a plan 4×
$402.40K 3,545 at 113.51
3.0%
Planned (10b5-1)
18 Feb 2026
Chen Stephen C. General Counsel
Sold on a plan 4×
$215.31K 1,901 at 113.26
5.9%
Planned (10b5-1)
17 Feb 2026
Glance Natalie Chief Engineering Officer
Sold on a plan
$191.61K 1,741 at 110.06
1.4%
Planned (10b5-1)
17 Feb 2026
Meese Robert Chief Business Officer
Sold at will
$110.06K 1,000 at 110.06
0.8%
Not planned
17 Feb 2026
Chen Stephen C. General Counsel
Sold on a plan
$98.61K 896 at 110.06
2.7%
Planned (10b5-1)
19 Nov 2025
Hacker Severin Chief Tech Officer, Co-Founder
Sold on a plan 8×
$1.73M 10,000 at 172.74
99.3%
Sold half or more
18 Nov 2025
Glance Natalie Chief Engineering Officer
Sold on a plan 5×
$434.37K 2,471 at 175.79
2.2%
Planned (10b5-1)
18 Nov 2025
Chen Stephen C. General Counsel
Sold on a plan 4×
$266.27K 1,514 at 175.87
4.6%
Planned (10b5-1)
17 Nov 2025
Glance Natalie Chief Engineering Officer
Sold on a plan
$450.93K 2,534 at 177.95
2.2%
Planned (10b5-1)
17 Nov 2025
Meese Robert Chief Business Officer
Sold at will
$256.96K 1,444 at 177.95
1.2%
Not planned
17 Nov 2025
Chen Stephen C. General Counsel
Sold on a plan
$228.13K 1,282 at 177.95
3.7%
Planned (10b5-1)
4 Nov 2025
Hacker Severin Chief Tech Officer, Co-Founder
Sold on a plan 10×
$2.63M 10,000 at 263.13
99.3%
Sold half or more
20 Oct 2025
Hacker Severin Chief Tech Officer, Co-Founder
Sold on a plan 15×
$3.15M 10,000 at 314.72
99.3%
Sold half or more
Showing 1–23 of 23.