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▼ SELL 10b5-1 Plan

$ Value

$60K

Shares

520

Price

$115

Filed

Feb 20

Insider

Name

Chen Stephen C.

Title

General Counsel

CIK

0001869758

Roles

Officer

Transaction Details

Transaction Date

2026-02-18

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

30,625

Footnotes

Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs") and delivery of shares. | The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on May 27, 2025. | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $111.83 to $112.79, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $113.31 to $114.23, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $114.31 to $115.23, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. | The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $115.47 to $115.52, inclusive. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

Filing Info

Accession No.

0001628280-26-009985

Form Type

4

Issuer CIK

0001562088

Chen Stephen C.'s History

Date Ticker Type Value
2026-02-18 DUOL $92K
2026-02-18 DUOL $55K
2026-02-18 DUOL $60K
2026-02-18 DUOL $9K
2026-02-17 DUOL $99K
2025-12-29 DUOL M $26K
2025-12-29 DUOL M $0
2025-11-18 DUOL $21K
2025-11-18 DUOL $104K
2025-11-18 DUOL $56K

Other Insiders at DUOL (90d)

Insider Bought Sold Last
Munson Gillian
Chief Financial Officer
2026-03-25
von Ahn Luis
President & CEO, Co-Founder
2026-02-17
Meese Robert
Chief Business Officer
$110K 2026-02-17
Skaruppa Matthew
Chief Financial Officer
$658K 2026-02-18
Chen Stephen C.
General Counsel
$254K 2026-02-18
Hacker Severin
Chief Tech Officer, Co-Founder
2026-02-17
Glance Natalie
Chief Engineering Officer
$594K 2026-02-27