Capital World Investors takes 5.9% stake in Align (NASDAQ: ALGN)

Rhea-AI Filing Summary

Align Technology reported beneficial ownership of 4,218,560 shares (5.9%) of Common Stock as disclosed on 03/31/2026. The filing states Capital World Investors (a division of Capital Research and Management Company and affiliates) has sole voting power over 4,197,473 shares and sole dispositive power over 4,218,560 shares of the 71,617,275 shares believed to be outstanding as of 03/31/2026.

Insights

Institutional Ownership Analyst

Capital World Investors holds a meaningful passive stake in Align at 5.9%.

Capital World Investors is reported as the beneficial owner of 4,218,560 shares, representing 5.9% of the 71,617,275 shares believed outstanding as of 03/31/2026. The filing indicates sole voting and dispositive powers for most of that stake, which is typical disclosure for large investment managers filing a Schedule 13G.

Because this is a Schedule 13G disclosure, it characterizes passive investment intent under applicable rules; cash‑flow treatment and any planned transactions are not stated in the excerpt. Subsequent filings would disclose any change in voting intent or conversion to an active investor filing.

Proxy and Governance Specialist

Stake size approaches common disclosure thresholds and may affect proxy dynamics.

The filing shows sole voting power of 4,197,473 shares and sole dispositive power of 4,218,560 shares, figures relevant to voting influence at shareholder meetings. The stake is below 10%, a level that often triggers additional governance scrutiny only if the holder becomes active.

Monitor future filings for any change from passive to active status or for amendments that alter percent ownership; timing not specified beyond the 03/31/2026 snapshot provided.

Key Figures

Beneficial ownership: 4,218,560 shares Percent of class: 5.9% Shares outstanding (base): 71,617,275 shares +2 more

5 metrics

Beneficial ownership 4,218,560 shares reported beneficially owned by Capital World Investors

Percent of class 5.9% of 71,617,275 shares believed outstanding as of 03/31/2026

Shares outstanding (base) 71,617,275 shares shares believed to be outstanding as of 03/31/2026

Sole voting power 4,197,473 shares sole power to vote or to direct the vote

Sole dispositive power 4,218,560 shares sole power to dispose or direct disposition

Key Terms

Schedule 13G, Beneficially owned, Sole Dispositive Power

3 terms

Schedule 13G regulatory

"Capital World Investors is deemed to be the beneficial owner"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficially owned financial

"Amount beneficially owned: 4,218,560"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Dispositive Power financial

"Sole power to dispose or to direct the disposition of: 4,218,560"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Align Technology, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

016255101

(CUSIP Number)

03/31/2026

(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): 016255101

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 4,197,473.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 4,218,560.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,218,560.00

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)

5.9 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Align Technology, Inc.
(b)	Address of issuer's principal executive offices: 410 North Scottsdale Road, Suite 1300, Tempe, AZ 85288
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 Number(s): 016255101
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: 4,218,560 ** **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 4,218,560 shares or 5.9% of the 71,617,275 shares believed to be outstanding.
(b)	Percent of class: 5.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 4,197,473
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 4,218,560
	(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:

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:	Jae Won Chung
Name/Title:	Senior Vice President and Associate General Counsel, Capital Research and Management Company
Date:	05/13/2026

FAQ

What stake does Capital World Investors hold in Align Technology (ALGN)?

Capital World Investors beneficially owns 4,218,560 shares, equal to 5.9% of Align's common stock. The filing lists this percentage against 71,617,275 shares believed outstanding as of 03/31/2026, with sole voting power on 4,197,473 shares.

Does the Schedule 13G from Capital World Investors indicate active control of ALGN?

No; a Schedule 13G filing typically signals passive investment intent rather than active control. The filing reports voting and dispositive powers but does not state any change to active investor status or plans to engage in governance.

How much voting power does Capital World Investors report for ALGN shares?

The filing reports sole voting power over 4,197,473 shares and shared voting power of zero. These figures are part of the voting/dispositive breakdown provided as of 03/31/2026.

Are the shares reported by Capital World Investors included in outstanding share count for ALGN?

Yes; the filing ties the 4,218,560 shares to a reported outstanding base of 71,617,275 shares believed outstanding as of 03/31/2026. The outstanding count is the basis for the 5.9% ownership calculation.

Will this Schedule 13G trigger disclosure of an activist intent by Capital World Investors?

Not by itself; a Schedule 13G indicates passive status. The filing does not state any activist or acquisition intent; any change in intent would typically require an amended filing disclosing active status.