As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of 8x8 Inc. The largest reported stake is Vanguard Portfolio Management's, at 5.36%. 13 filings are on record since August 13, 2025 (Schedule 13G, April 27, 2026).
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Key facts
- · Holder: Boston Partners · Percent: 4.79% · SCHEDULE 13G/A
- · Holder: Vanguard Portfolio Management · Percent: 5.36% · SCHEDULE 13G
- · Holder: Sylebra Capital LLC · Percent: 4.85% · Shares: 6,757,049 · SCHEDULE 13D/A
- · Holder: Sylebra Capital LLC · Percent: 6.01% · SCHEDULE 13D/A
- · Holder: The Vanguard Group · Percent: 0% · SCHEDULE 13G/A
8x8 Inc has 13 Schedule 13D or 13G filings on record since 2025-08-13. 1 holder's latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Vanguard Portfolio Management | 5.36% | 7,480,632 | SCHEDULE 13G, 2026-04-27 | 2026-03-31 |
| Sylebra Capital LLC | 4.85% | 6,757,049 | SCHEDULE 13D/A, 2026-04-16 | 2026-04-16 |
| Boston Partners | 4.79% | 6,674,315 | SCHEDULE 13G/A, 2026-05-14 | 2026-03-31 |
| Bank Of America Corp | 4.3% | 5,910,727 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| ArrowMark Colorado Holdings, LLC | 1.93% | 2,604,788 | SCHEDULE 13G/A, 2025-10-23 | 2025-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
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More on 8x8 Inc and the records around it.
8x8 Inc elsewhere on the record
Companies that share a holder
- SYLEBRA CAPITAL LLC also filed stake reports on 3 other companies: Aeva Technologies, Inc. (Jul 2026), PureCycle Technologies, Inc. (Jun 2026)
- ArrowMark Colorado Holdings, LLC also filed stake reports on 9 other companies: PMV Pharmaceuticals, Inc. (Jul 2026), Sprout Social, Inc. (Apr 2026), CIMPRESS plc (Feb 2026)
- Boston Partners also filed stake reports on 28 other companies: CROSS COUNTRY HEALTHCARE INC (Nov 2026), DoubleDown Interactive Co., Ltd. (Nov 2026), Holley Inc. (Aug 2026)
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Purpose of Transaction (Item 4)
Sylebra Capital LLC
N/A as this was a disposal of securities. The Reporting Persons previously filed a Schedule 13D to report beneficial ownership of the Issuer's Common Stock, reflecting an initial intent to potentially influence the Issuer's management or policies. Subsequently, the Reporting Persons have adopted a passive investment stance but were unable to transition to a Schedule 13G. The Reporting Persons have no plans or proposals with respect to the Issuer that would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D.Item 4 of the SCHEDULE 13D/A filed 2026-04-16
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-13 | Bank Of America Corp | 5.3% | SCHEDULE 13G |
| 2025-10-16 | Sylebra Capital LLC | 9.96% | SCHEDULE 13D |
| 2025-10-23 | ArrowMark Colorado Holdings, LLC | 1.93% | SCHEDULE 13G/A |
| 2025-11-03 | Boston Partners | 6.28% | SCHEDULE 13G/A |
| 2025-11-14 | Bank Of America Corp | 4.3% | SCHEDULE 13G/A |
| 2026-01-06 | Sylebra Capital LLC | 8.26% | SCHEDULE 13D/A |
| 2026-01-16 | Boston Partners | 5.17% | SCHEDULE 13G/A |
| 2026-02-17 | Sylebra Capital LLC | 7.15% | SCHEDULE 13D/A |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-08 | Sylebra Capital LLC | 6.01% | SCHEDULE 13D/A |
| 2026-04-16 | Sylebra Capital LLC | 4.85% | SCHEDULE 13D/A |
| 2026-04-27 | Vanguard Portfolio Management | 5.36% | SCHEDULE 13G |
| 2026-05-14 | Boston Partners | 4.79% | SCHEDULE 13G/A |
Questions about who owns 8x8 Inc
Who owns 8x8 Inc?
On this page, one holder's latest ownership filing reports 5% or more of 8x8 Inc: Vanguard Portfolio Management (5.36%, Schedule 13G, filed 2026-04-27).
When did Vanguard Portfolio Management buy into 8x8 Inc?
The filings give report dates, not purchase dates. The earliest filing from Vanguard Portfolio Management on this page is the Schedule 13G, filed 2026-04-27, reporting 5.36%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 13 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for 8x8 Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| July 30, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.