Duolingo (NASDAQ: DUOL) insider plans fresh stock sale

Rhea-AI Filing Summary

Stephen Chen filed a Form 144 relating to a proposed sale of 1,024 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services. The filing also lists a prior sale of 1,977 shares of common stock on 05/18/2026 for $224,602.82.

Key Figures

Proposed shares to be sold: 1,024 shares Proposed sale date: 08/17/2026 Proposed transaction value: 132,230.25 +4 more

7 metrics

Proposed shares to be sold 1,024 shares Common stock covered by the Form 144 notice

Proposed sale date 08/17/2026 Date associated with the 1,024-share common stock entry

Proposed transaction value 132,230.25 Dollar amount listed with the 1,024-share common stock entry

Prior shares sold 1,977 shares Common shares sold during the past 3 months

Prior sale proceeds 224,602.82 Total value for the 1,977-share sale on 05/18/2026

Prior sale date 05/18/2026 Date of the 1,977-share common stock sale

Restricted stock quantity 1,024 shares Restricted stock entry dated 08/15/2026 from issuer

Key Terms

Form 144, Restricted Stock, Executive Financial Services

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock financial

"Common | 08/15/2026 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

What does Stephen Chen's Form 144 filing indicate for DUOL stock?

The Form 144 shows a proposed sale of up to 1,024 common shares and discloses a prior sale of 1,977 shares on 05/18/2026 for $224,602.82, giving transparency into Chen’s recent trading activity.

How many DUOL shares are covered by Stephen Chen's current Form 144?

The current notice covers a proposed sale of up to 1,024 shares of common stock. These shares are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services in New York, as identified in the filing’s securities information section.

What prior DUOL stock sales by Stephen Chen are disclosed in this Form 144?

The filing discloses that on 05/18/2026, 1,977 shares of common stock were sold for $224,602.82. This appears under the section for securities sold during the past 3 months, providing context for recent sales activity.

What type of DUOL security is referenced in Stephen Chen's Form 144?

The security referenced is common stock, with one entry specifying it as Restricted Stock. The filing identifies the issuer as the source of the restricted shares, which are associated with a date of 08/15/2026 in the securities details.

Which broker is involved in Stephen Chen's proposed DUOL share sale?

The proposed sale of 1,024 common shares is associated with Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, as listed in the securities information section.

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Available on EDGAR 08/17/2026 - 06:20 PM Accepted by SEC EDGAR 08/17/2026 - 06:20 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1024	132230.25	40387012	08/17/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/15/2026	Restricted Stock	Issuer			1024	08/15/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
STEPHEN CHEN 5900 Penn Avenue Pittsburgh PA 15206	Common	05/18/2026	1977	224602.82

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)