Insider at issuer (NASDAQ: DUOL) plans Rule 144 sale of 1,741 shares

Rhea-AI Filing Summary

A holder of common shares filed a notice of proposed sale under Rule 144, planning to sell 1,741 shares through Morgan Stanley Smith Barney LLC on the NASDAQ around 02/17/2026. The aggregate market value of the planned sale is $191,615.50, versus 40,013,533 shares outstanding.

The 1,741 shares were acquired from the issuer as restricted stock on 02/15/2026. The filing also notes that Natalie Glance sold 2,471 common shares on 11/18/2025 for $434,365.97. The seller represents they are not aware of any undisclosed material adverse information about the issuer’s operations.

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	1741	191615.50	40013533	02/17/2026	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	02/15/2026	Restricted Stock	Issuer			1741	02/15/2026	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
NATALIE GLANCE 5900 Penn Avenue Pittsburgh PA 15206	Common	11/18/2025	2471	434365.97

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)

FAQ

What does this Form 144 filing for DUOL disclose?

The filing discloses a planned Rule 144 sale of 1,741 common shares on NASDAQ. It lists the broker, aggregate market value, acquisition details as restricted stock, and a representation that the seller knows no undisclosed material adverse information about the issuer.

How many DUOL shares are planned to be sold under this Form 144?

The notice covers a planned sale of 1,741 common shares. The aggregate market value of these shares is listed as $191,615.50, with total shares of the issuer outstanding shown as 40,013,533 at the time referenced.

When and how were the DUOL shares in this Form 144 acquired?

The 1,741 common shares were acquired on 02/15/2026 as restricted stock from the issuer. The table states “Not Applicable” for the nature of payment, indicating no separate cash payment terms were described for this restricted stock grant.

What prior DUOL share sales are reported in the past 3 months?

The filing reports that Natalie Glance sold 2,471 common shares on 11/18/2025. The gross proceeds from that earlier transaction are listed as $434,365.97, providing context for recent selling activity by the same account holder.

Which broker will handle the DUOL Rule 144 share sale?

The planned sale will be executed through Morgan Stanley Smith Barney LLC Executive Financial Services. Their address is listed as 1 New York Plaza, 8th Floor, New York, NY 10004, and the sale is expected to occur on the NASDAQ exchange.

What representation does the seller make in this DUOL Form 144?

The seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed. This statement supports compliance with securities regulations governing insider sales.