Boston Partners reports 4.79% stake in 8x8 (EGHT) — 6.67M shares

Rhea-AI Filing Summary

8x8 Inc. amendment to a Schedule 13G/A reports that Boston Partners beneficially owns 6,674,315 shares of common stock, representing 4.79% of the class as reported. The filing states Boston Partners has sole voting and sole dispositive power over these shares. The form is signed by a compliance manager on 05/14/2026.

Key Figures

Shares beneficially owned: 6,674,315 shares Percent of class: 4.79% Reporting date: 03/31/2026 +1 more

4 metrics

Shares beneficially owned 6,674,315 shares Amount beneficially owned as reported on Schedule 13G/A

Percent of class 4.79% Percent of common stock represented by the reported shares

Reporting date 03/31/2026 Reference date shown in the filing header

Signature date 05/14/2026 Date the Schedule 13G/A was signed by the filer

Key Terms

Schedule 13G/A, Beneficially owned, Sole Dispositive Power, Percent of class

4 terms

Schedule 13G/A regulatory

"Amendment No. 4 ) 8X8 INC /DE/ Common Stock"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: 6,674,315"

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

"(iii) Sole power to dispose or to direct the disposition of: Boston Partners - 6,674,315"

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.

Percent of class market

"Item 4. | (b) | Percent of class: 4.79 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

8X8 INC /DE/

(Name of Issuer)

Common Stock

(Title of Class of Securities)

282914100

(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): 282914100

1

Names of Reporting Persons

Boston Partners

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 6,674,315.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 6,674,315.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,674,315.00

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)

4.79 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: 8X8 INC /DE/
(b)	Address of issuer's principal executive offices: 675 CREEKSIDE WAY, CAMPBELL, CALIFORNIA 95008
Item 2.
(a)	Name of person filing: Boston Partners
(b)	Address or principal business office or, if none, residence: ONE BEACON STREET 30TH FLOOR BOSTON, Massachusetts 02108
(c)	Citizenship: Boston Partners - DELAWARE
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 282914100
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: 6,674,315
(b)	Percent of class: 4.79 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Boston Partners - 6,674,315
	(ii) Shared power to vote or to direct the vote: Boston Partners - 0
	(iii) Sole power to dispose or to direct the disposition of: Boston Partners - 6,674,315
	(iv) Shared power to dispose or to direct the disposition of: Boston Partners - 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	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.

Boston Partners

Signature:	/s/ Ali Farooqi
Name/Title:	Ali Farooqi / Senior Compliance Manager
Date:	05/14/2026

FAQ

What stake does Boston Partners report in EGHT?

Boston Partners reports beneficial ownership of 6,674,315 shares, equal to 4.79% of 8x8's common stock. The filing lists both sole voting power and sole dispositive power over the same 6,674,315 shares as of the reported filing.

Does Boston Partners have voting control over the shares in EGHT?

Yes. The filing states Boston Partners has sole power to vote and sole power to dispose of 6,674,315 shares. The Schedule 13G/A lists zero shared voting or dispositive power for these shares.

When was the Schedule 13G/A for EGHT signed?

The form is signed by Ali Farooqi, Senior Compliance Manager on 05/14/2026. The header also shows a reporting reference date of 03/31/2026 associated with the filing's ownership data.

Is Boston Partners filing reported as owning more than 5% of EGHT?

No. The Schedule 13G/A explicitly states ownership of 5 percent or less of a class. The reported 4.79% stake is below the 5% threshold referenced in the filing.

Where is Boston Partners' business address listed in the EGHT filing?

The Schedule 13G/A lists Boston Partners' principal business office as ONE BEACON STREET, 30TH FLOOR, BOSTON, Massachusetts 02108. The filing also identifies Boston Partners' citizenship as Delaware.