[SCHEDULE 13G] Duolingo, Inc. SEC Filing

Rhea-AI Filing Summary

Capital World Investors reports beneficial ownership of 2,343,620 shares of Duolingo common stock, representing 6.0% of the 39,260,633 shares the filer believes are outstanding. The filing discloses sole voting power over 2,335,112 shares and sole dispositive power over 2,343,620 shares, indicating CWI can independently vote and dispose of the shares it holds.

The statement is submitted on Schedule 13G by an entity classified as an investment adviser (IA) and includes a certification that the securities are held in the ordinary course of business and not to change or influence control of the issuer, consistent with a passive ownership stake.

Positive

• Beneficial ownership of 2,343,620 shares disclosed, representing a material 6.0% stake
• Sole voting power for 2,335,112 shares, indicating direct voting control over most of the position
• Filed on Schedule 13G as an Investment Adviser (IA), signifying a passive, non-activist holding

Negative

• None.

Insights

Financial Analyst

TL;DR: Capital World Investors holds a material passive stake of 6.0% in Duolingo with sole voting and dispositive power over its position.

This Schedule 13G reports a clear, non-activist ownership position: 2,343,620 shares (6.0% of ~39.26M outstanding). The holder reports sole voting authority over 2,335,112 shares, which means the adviser can exercise votes on most of its economic exposure. Because the filing is a 13G and includes a certification that holdings are not to influence control, the market impact is informational rather than a signal of an activist campaign.

Corporate Governance Expert

TL;DR: The filing is material for ownership transparency but indicates passive intent, not a governance change attempt.

From a governance perspective, ownership above the 5% threshold requires disclosure; CWI's declaration under the 13G framework and the certification that shares are held in the ordinary course suggest no imminent push for board or control actions. The concentration—6.0% with sole voting power on most shares—does make CWI a significant shareholder whose future actions merit monitoring, but the statement explicitly disclaims an intent to influence control.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Duolingo, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

26603R106

(CUSIP Number)

06/30/2025

(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)

SCHEDULE 13G

CUSIP No. 26603R106

1

Names of Reporting Persons

Capital World Investors

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,335,112.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,343,620.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,343,620.00

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)

6.0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Duolingo, Inc.
(b)	Address of issuer's principal executive offices: 5900 Penn Avenue, Pittsburgh, PA 15206
Item 2.
(a)	Name of person filing: Capital World Investors
(b)	Address or principal business office or, if none, residence: 333 SOUTH HOPE STREET, 55TH FLOOR, LOS ANGELES, CALIFORNIA 90071
(c)	Citizenship: N/A
(d)	Title of class of securities: Common Stock
(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: 2,343,620 ** **Capital World Investors ("CWI") is a division of Capital Research and Management Company ("CRMC"), as well as its investment management subsidiaries and affiliates Capital Bank and Trust Company, Capital International, Inc., Capital International Limited, Capital International Sarl, Capital International K.K., Capital Group Private Client Services, Inc., and Capital Group Investment Management Private Limited (together with CRMC, the "investment management entities"). CWI's divisions of each of the investment management entities collectively provide investment management services under the name "Capital World Investors." CWI is deemed to be the beneficial owner of 2,343,620 shares or 6.0% of the 39,260,633 shares believed to be outstanding.
(b)	Percent of class: 6.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2,335,112
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2,343,620
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
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:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

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.

Capital World Investors

Signature:	Timothy J. Moon
Name/Title:	Vice President and Senior Counsel, Capital Research and Management Company
Date:	08/04/2025

FAQ

How many Duolingo (DUOL) shares does Capital World Investors own?

Capital World Investors beneficially owns 2,343,620 shares of Duolingo common stock.

What percentage of Duolingo does CWI own?

The filing reports ownership of 6.0% of the common stock, based on 39,260,633 shares believed outstanding.

Does Capital World Investors have voting control over its shares?

Yes. The filer reports sole voting power over 2,335,112 shares and no shared voting power.

Is this a passive or activist filing?

This is a Schedule 13G filing by an investment adviser and includes a certification that shares are held in the ordinary course of business and not to influence control, indicating passive intent.

Does the filing state whether the shares are held to influence control of Duolingo?

No. The certification states the securities were not acquired and are not held to change or influence control of the issuer.

Who signed the Schedule 13G on behalf of Capital World Investors?

The filing is signed by Timothy J. Moon, Vice President and Senior Counsel, Capital Research and Management Company.