Duolingo CEO reports 8.2% ownership stake

Rhea-AI Filing Summary

Duolingo, Inc. insider Luis von Ahn reported his beneficial ownership of Class A common stock in an amended Schedule 13G. As of June 30, 2026, he beneficially owned 3,594,120 shares of Class A common stock, representing 8.2% of the Class A shares outstanding, based on 40,387,012 shares outstanding as of August 4, 2026. This includes 3,368,120 shares issuable upon conversion of Class B common stock on a one-for-one basis and 226,000 shares underlying stock options exercisable within 60 days of June 30, 2026. He reports sole voting and dispositive power over all 3,594,120 shares.

Key Figures

Beneficially owned shares: 3,594,120 shares Ownership percentage: 8.2% Shares outstanding: 40,387,012 shares +3 more

6 metrics

Beneficially owned shares 3,594,120 shares Class A common stock beneficially owned by Luis von Ahn as of June 30, 2026

Ownership percentage 8.2% Percent of Duolingo Class A common stock beneficially owned by Luis von Ahn

Shares outstanding 40,387,012 shares Duolingo Class A shares outstanding as of August 4, 2026

Class B underlying shares 3,368,120 shares Class A shares underlying Class B common stock held by Luis von Ahn, convertible one-for-one

Stock options 226,000 shares Class A shares underlying stock options exercisable within 60 days of June 30, 2026

Sole voting power 3,594,120 shares Shares over which Luis von Ahn has sole power to vote or direct the vote

Key Terms

beneficial ownership, Class B Common Stock, stock options, sole voting power, +1 more

5 terms

beneficial ownership financial

"The ownership information presented below represents beneficial ownership of Class A Common Stock"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Class B Common Stock financial

"includes 3,368,120 shares of Class A Common Stock underlying shares of Class B Common Stock"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

stock options financial

"226,000 shares of Class A Common Stock underlying stock options held of record"

Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.

sole voting power financial

"Sole power to vote or to direct the vote: 3594120"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

dispositive power financial

"Sole power to dispose or to direct the disposition of: 3594120"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

FAQ

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

How many Duolingo (DUOL) shares does Luis von Ahn beneficially own?

Luis von Ahn beneficially owns 3,594,120 shares of Duolingo Class A common stock. This total includes shares underlying Class B conversions and stock options exercisable within 60 days of June 30, 2026.

What percentage of Duolingo (DUOL) Class A stock does Luis von Ahn hold?

Luis von Ahn holds 8.2% of Duolingo’s Class A common stock. This percentage is based on 40,387,012 Class A shares outstanding as of August 4, 2026, as referenced in the company’s Form 10-Q.

How is Luis von Ahn’s Duolingo (DUOL) ownership structurally composed?

His 3,594,120-share beneficial ownership includes 3,368,120 Class A shares underlying convertible Class B stock and 226,000 Class A shares underlying stock options exercisable within 60 days of June 30, 2026.

What voting and dispositive power does Luis von Ahn report over Duolingo (DUOL) shares?

Luis von Ahn reports sole voting power and sole dispositive power over 3,594,120 Duolingo Class A shares, with no shared voting or shared dispositive power over any shares.

When is the ownership information for Duolingo (DUOL) in this filing measured?

The beneficial ownership position is measured as of June 30, 2026, while the total of 40,387,012 Class A shares outstanding is based on data as of August 4, 2026 from Duolingo’s Form 10-Q.

Does the Duolingo (DUOL) filing indicate that Luis von Ahn filed as an individual?

Yes. The statement is filed on behalf of Luis von Ahn as the “Reporting Person,” with a listed business address at Duolingo’s headquarters in Pittsburgh, Pennsylvania, and his citizenship stated as United States.

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

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Available on EDGAR 08/12/2026 - 06:17 PM Accepted by SEC EDGAR 08/12/2026 - 06:16 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

Duolingo, Inc.

(Name of Issuer)

Class A common stock, $0.0001 per share

(Title of Class of Securities)

26603R106

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 26603R106

1

Names of Reporting Persons

Von Ahn Luis

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,594,120.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,594,120.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,594,120.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

8.2 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Duolingo, Inc.
(b)	Address of issuer's principal executive offices: 5900 Penn Avenue, Pittsburgh, Pennsylvania, 15206
Item 2.
(a)	Name of person filing: This statement is filed on behalf of Luis von Ahn (the "Reporting Person").
(b)	Address or principal business office or, if none, residence: The business address of the Reporting Person is c/o Duolingo, Inc., 5900 Penn Avenue, Pittsburgh, PA 15206.
(c)	Citizenship: United States
(d)	Title of class of securities: Class A common stock, $0.0001 per share
(e)	CUSIP No.: 26603R106
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The information contained on the cover page to this Schedule 13G is incorporated by reference into this Item 4. The ownership information presented below represents beneficial ownership of Class A Common Stock of the Issuer as of June 30, 2026, based upon 40,387,012 shares of Class A Common Stock outstanding as of August 4, 2026, based on the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 6, 2026. The Reporting Person is the beneficial owner of 3,594,120 shares of Class A Common Stock, which includes (i) 3,368,120 shares of Class A Common Stock underlying shares of Class B Common Stock held of record by the Reporting Person that are convertible at any time at the option of the holder into Class A Common Stock on a one-for-one basis, and (iii) 226,000 shares of Class A Common Stock underlying stock options held of record by the Reporting Person that are exercisable within 60 days of June 30, 2026.
(b)	Percent of class: 8.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 3594120
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 3594120
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Von Ahn Luis

Signature:	/s/ Luis von Ahn
Name/Title:	Luis von Ahn, CEO
Date:	08/12/2026