Vanguard reports 5.08% stake in Enphase (ENPH)

Vanguard Capital Management reported beneficial ownership of 6,665,473 shares of Enphase Energy Inc. under a Schedule 13G filing covering common stock (CUSIP 29355A107) as of 03/31/2026.

Rhea-AI Filing Summary

Vanguard Capital Management reported beneficial ownership of 6,665,473 shares of Enphase Energy Inc. under a Schedule 13G filing covering common stock (CUSIP 29355A107) as of 03/31/2026. The stake represents 5.08% of the class with sole dispositive power over 6,665,473 shares and sole voting power over 998,365 shares. The filing states these holdings reflect positions managed or held by affiliated Vanguard entities and funds. The report is signed by Ashley Grim, Head of Global Fund Administration, dated 04/29/2026.

Insights

Institutional Ownership Analyst

Vanguard holds a passive, disclosed 5.08% stake in Enphase as of 03/31/2026.

Schedule 13G is typically used by passive investors to disclose holdings above 5% without intent to influence control. The filing lists both dispositive and voting powers exercised by Vanguard and affiliated business units.

Close attention may be paid to future amendments or Schedule 13D conversions if Vanguard's intent or activity changes; current disclosures show aggregated positions across Vanguard-managed funds and accounts.

Equity Governance Specialist

The filing clarifies voting and dispositive authorities across Vanguard entities.

It specifies sole voting power of 998,365 shares and sole dispositive power of 6,665,473 shares, indicating control over trade decisions while voting power is allocated across managed vehicles.

Any material change in voting or acquisition intent would require updated disclosure; timing and further actions are not stated in the excerpt.

Key Figures

Beneficial ownership: 6,665,473 shares Percent of class: 5.08% Sole voting power: 998,365 shares +3 more

6 metrics

Beneficial ownership 6,665,473 shares as of 03/31/2026

Percent of class 5.08% ownership percentage reported on Schedule 13G

Sole voting power 998,365 shares shares with sole power to vote

Sole dispositive power 6,665,473 shares shares with sole power to dispose

Filing type Schedule 13G passive investor disclosure

CUSIP 29355A107 Enphase Energy Inc common stock

Key Terms

beneficially owned, sole dispositive power, Schedule 13G, Investment Company Act of 1940

4 terms

beneficially owned regulatory

"this reflects the securities beneficially owned, or deemed to be beneficially owned"

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 regulatory

"Sole power to dispose or to direct the disposition of: 6665473"

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.

Schedule 13G regulatory

"Item 1. | (a) | Name of issuer: Enphase Energy Inc"

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.

Investment Company Act of 1940 regulatory

"a listing of the shareholders of an investment company registered under the Investment Company Act of 1940"

A U.S. federal law that sets the rulebook for pooled investment vehicles such as mutual funds, exchange-traded funds and similar money managers, requiring them to register with regulators, disclose holdings and fees, limit conflicts of interest, and follow governance standards. It matters to investors because these protections and transparency rules act like a referee and scoreboard, helping people compare funds, trust that managers follow fair practices, and spot hidden costs or risks.

FAQ

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

What stake does Vanguard Capital Management hold in Enphase (ENPH)?

Vanguard Capital Management reported beneficial ownership of 6,665,473 shares of Enphase common stock, equal to 5.08% of the class as of 03/31/2026. The position is disclosed on a Schedule 13G.

Does Vanguard control how Enphase shares are voted?

The filing shows Vanguard has sole voting power for 998,365 shares and sole dispositive power for 6,665,473 shares, reflecting which shares Vanguard directs votes for and which it can buy or sell.

Who signed the Schedule 13G for Vanguard regarding ENPH?

The Schedule 13G was signed by Ashley Grim, Head of Global Fund Administration, with the signature date shown as 04/29/2026 in the filing excerpt.

Are Vanguard’s holdings held personally or on behalf of funds?

The filing states the holdings reflect securities held by Vanguard-managed funds and affiliated business divisions; positions are held on behalf of various managed accounts and investment companies.

What does filing on Schedule 13G indicate about Vanguard's intent?

A Schedule 13G filing generally indicates a passive investment intent rather than an intent to influence control. The excerpt lists holdings and powers but does not state any intent to change control or seek influence.

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

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Accepted by SEC EDGAR 04/29/2026 - 06:18 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Enphase Energy Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

29355A107

(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): 29355A107

1

Names of Reporting Persons

Vanguard Capital Management

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

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 998,365.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 6,665,473.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,665,473.00

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)

5.08 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Capital Management LLC and the following affiliates of Vanguard Capital Management LLC or business divisions of such affiliates: Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC and Vanguard Investments Australia Ltd. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Capital Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Capital Management LLC, or business divisions of such subsidiaries, whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Enphase Energy Inc
(b)	Address of issuer's principal executive offices: 47281 Bayside Parkway, Fremont, CA, 94538
Item 2.
(a)	Name of person filing: Vanguard Capital Management
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 29355A107
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: 6665473
(b)	Percent of class: 5.08 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 998365
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 6665473
	(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.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Vanguard Capital Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
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.

Vanguard Capital Management

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	04/29/2026