DUOL Form 144: 3,360 RSUs Proposed Sale

Morgan Stanley Smith Barney LLC filed a Form 144 proposing the sale of 3,360 restricted stock units of DUOL.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC filed a Form 144 proposing the sale of 3,360 restricted stock units of DUOL. The filing lists the security type as Restricted Stock Units with an event date of 05/15/2026.

The disclosure also shows 1,929 common shares were sold during the past three months by Natalie Glance on 05/15/2026 with an associated figure of 216,347.38 in the same row.

Insights

Securities Compliance Analyst

Form 144 registers an affiliate sale of RSUs, with recent prior sales noted.

The filing lists 3,360 Restricted Stock Units proposed for sale and records 1,929 shares sold in the past three months by Natalie Glance. The document ties the transactions to 05/15/2026.

Timing and exact proceeds treatment are stated only as line items; subsequent notice of sale or settlement details would appear in trade reports or related filings.

Key Figures

RSUs to be sold: 3,360 shares Shares sold in past 3 months: 1,929 shares Row figure: 216,347.38

3 metrics

RSUs to be sold 3,360 shares Securities To Be Sold; event date 05/15/2026

Shares sold in past 3 months 1,929 shares Securities Sold During The Past 3 Months; sale date 05/15/2026

Row figure 216,347.38 Associated numeric entry on the past-sales row for Natalie Glance

Key Terms

Restricted Stock Units, Form 144, Securities To Be Sold

3 terms

Restricted Stock Units financial

"Common | 05/15/2026 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Form 144 regulatory

"Filer Information | 144: Filer Information"

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.

Securities To Be Sold regulatory

"144: Securities To Be Sold"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does DUOL's Form 144 disclose about securities to be sold?

The filing shows 3,360 Restricted Stock Units proposed for sale with an event date of 05/15/2026. It identifies the seller role as Issuer for those RSUs.

Who sold shares in the past three months according to the Form 144?

Natalie Glance is listed as having sold 1,929 common shares on 05/15/2026, with an associated figure of 216,347.38 on the same row.

Does the Form 144 state the security type for the proposed sale?

Yes; the filing specifies the securities to be sold are Restricted Stock Units for Common stock, dated 05/15/2026, listed under the issuer line.

Which broker is named on the Form 144 for the proposed sale?

The filing names Morgan Stanley Smith Barney LLC with an address at 1 New York Plaza, 8th Floor, New York, NY 10004 as the broker/dealer associated with the entry.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/18/2026 - 04:30 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	0001870350
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Duolingo, Inc.
SEC File Number	001-40653
Address of Issuer	5900 Penn Avenue Pittsburgh PENNSYLVANIA 15206
Phone	4125676602
Name of Person for Whose Account the Securities are To Be Sold	NATALIE GLANCE
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	Officer

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	3360	376521.60	40237065	05/18/2026	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	05/15/2026	Restricted Stock Units	Issuer			3360	05/15/2026	N/A

* 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
NATALIE GLANCE 5900 Penn Avenue Pittsburgh PA 15206	Common	05/15/2026	1929	216347.38

144: Remarks and Signature

Remarks
Date of Notice	05/18/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/15/2025
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	/s/ Natalie Glance
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)