As of November 6, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Shenandoah Telecommunications Co. The largest reported stake is ECP ControlCo, LLC's, at 11.6%. 10 filings are on record since August 12, 2025 (Schedule 13D/A, August 12, 2025).
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Key facts
- · Reporting person: Dimensional Fund Advisors LP · Sole voting: 2,818,235 · Shared voting: 0 · Sole dispositive: 2,868,476 · Shared dispositive: 0 · SCHEDULE 13G, 2026-10-08
- · Reporting person: BlackRock, Inc. · Sole voting: 3,731,060 · Shared voting: 0 · Sole dispositive: 3,810,952 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-10-05
- · Reporting person: Southeastern Asset Management, Inc. · Sole voting: 4,157 · Shared voting: 2,612,640 · Sole dispositive: 4,157 · Shared dispositive: 2,612,640 · SCHEDULE 13G/A, 2026-08-14
- · Holder: GCM Investments GP, LLC · Percent: 7.4% · SCHEDULE 13D/A
- · Holder: Barclays PLC · Percent: 3.7% · SCHEDULE 13G/A
Shenandoah Telecommunications Co has 10 Schedule 13D or 13G filings on record since 2025-08-12. 4 holders' 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 |
|---|---|---|---|---|
| ECP ControlCo, LLC | 11.6% | 6,774,728 | SCHEDULE 13D/A, 2025-08-12 | 2025-08-08 |
| GCM Investments GP, LLC | 7.4% | 4,116,050 | SCHEDULE 13D/A, 2026-06-10 | 2026-06-08 |
| BlackRock, Inc. | 6.9% | 3,810,952 | SCHEDULE 13G/A, 2026-10-05 | 2026-09-30 |
| Dimensional Fund Advisors LP | 5.2% | 2,868,476 | SCHEDULE 13G, 2026-10-08 | 2026-09-30 |
| Southeastern Asset Management, Inc. | 4.7% | 2,616,797 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Barclays PLC | 3.7% | 2,048,706 | SCHEDULE 13G/A, 2026-05-14 | 2026-03-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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What the Full Report on Shenandoah Telecommunications Co covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
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The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,731,060 | 0 | 3,810,952 | 0 | SCHEDULE 13G/A, 2026-10-05 |
| Dimensional Fund Advisors LP | 2,818,235 | 0 | 2,868,476 | 0 | SCHEDULE 13G, 2026-10-08 |
| Southeastern Asset Management, Inc. | 4,157 | 2,612,640 | 4,157 | 2,612,640 | SCHEDULE 13G/A, 2026-08-14 |
| Longleaf Partners Small-Cap Fund | 0 | 2,612,640 | 0 | 2,612,640 | SCHEDULE 13G/A, 2026-08-14 |
| O. Mason Hawkins | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies Shenandoah Telecommunications Co by CUSIP 82312B106 and gives its principal executive office as 500 Shentel Way, PO Box 459, Edinburg (SCHEDULE 13G, 2026-10-08).
Purpose of Transaction (Item 4)
GCM Investments GP, LLC
Item 4 is hereby amended to add the following: Effective June 8, 2026, James DiMola resigned from the Board and Matthew Rinklin was appointed to the Board to serve as a Class 3 director to fill the vacancy created by Mr. DiMola's resignation. Mr. Rinklin's appointment was made pursuant to the Investor Rights Agreement (as defined in the Schedule 13D). Mr. Rinklin will be deemed to replace Mr. DiMola as the Investor Director (as defined in the Investor Rights Agreement) under the Investor Rights Agreement and will assume Mr. DiMola's roles on the standing committees of the Board. Mr. Rinklin will initially serve as a director until the Issuer's 2027 Annual Meeting of Stockholders.Item 4 of the SCHEDULE 13D/A filed 2026-06-10
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-12 | ECP ControlCo, LLC | 11.6% | SCHEDULE 13D/A |
| 2025-11-12 | Barclays PLC | 5.2% | SCHEDULE 13G |
| 2026-01-30 | The Vanguard Group | 6.24% | SCHEDULE 13G/A |
| 2026-02-13 | Southeastern Asset Management, Inc. | 5.4% | SCHEDULE 13G |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-05-14 | Barclays PLC | 3.7% | SCHEDULE 13G/A |
| 2026-06-10 | GCM Investments GP, LLC | 7.4% | SCHEDULE 13D/A |
| 2026-08-14 | Southeastern Asset Management, Inc. | 4.7% | SCHEDULE 13G/A |
| 2026-10-05 | BlackRock, Inc. | 6.9% | SCHEDULE 13G/A |
| 2026-10-08 | Dimensional Fund Advisors LP | 5.2% | SCHEDULE 13G |
Questions about who owns Shenandoah Telecommunications Co
Who owns Shenandoah Telecommunications Co?
On this page, 4 holders' latest ownership filings report 5% or more of Shenandoah Telecommunications Co: ECP ControlCo, LLC (11.6%, Schedule 13D/A, filed 2025-08-12), GCM Investments GP, LLC (7.4%, Schedule 13D/A, filed 2026-06-10), BlackRock, Inc. (6.9%, Schedule 13G/A, filed 2026-10-05) and Dimensional Fund Advisors LP (5.2%, Schedule 13G, filed 2026-10-08).
Who are the largest shareholders of Shenandoah Telecommunications Co?
By the share each holder's latest filing reports, the largest holders of Shenandoah Telecommunications Co on this page are ECP ControlCo, LLC (11.6%), GCM Investments GP, LLC (7.4%) and BlackRock, Inc. (6.9%).
When did ECP ControlCo, LLC buy into Shenandoah Telecommunications Co?
The filings give report dates, not purchase dates. The earliest filing from ECP ControlCo, LLC on this page is the Schedule 13D/A, filed 2025-08-12, reporting 11.6%. That earliest filing is itself an amendment, which updates an earlier report.
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%); 10 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 Shenandoah Telecommunications Co
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| July 22, 2026 | Leadership change: Tracy Willis departs, Chief Accounting Officer | — | Leadership changes | Source |
| June 8, 2026 | Leadership change: Matthew D. Rinklin appointed | — | 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.