Office Properties Income Trust: 5%+ holders

As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Office Properties Income Trust. The largest reported stake is Helix Partners Management LP's, at 25.3%. 10 filings are on record since July 29, 2025 (Schedule 13D, June 25, 2026).

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Key facts

• Filing 2026-08-19 · Reporting person: Redwood Capital Management, LLC · Sole voting: 0 · Shared voting: 3,961,992 · Sole dispositive: 0 · Shared dispositive: 3,961,992 · SCHEDULE 13D/A, 2026-08-19
• Filing 2026-08-13 · Reporting person: Barclays PLC · Sole voting: 1,717,425 · Shared voting: 134,795 · Sole dispositive: 1,717,425 · Shared dispositive: 134,795 · SCHEDULE 13G, 2026-08-13
• Filed 2026-07-24 · Holder: Redwood Capital Management, LLC · Percent: 19.7% · SCHEDULE 13D/A
• Filed 2026-07-10 · Holder: Liberty Mutual Holding Company Inc. · Percent: 6% · SCHEDULE 13G
• Filed 2026-07-06 · Holder: Whitebox Advisors LLC · Percent: 8.2% · SCHEDULE 13G

Office Properties Income Trust has 10 Schedule 13D or 13G filings on record since 2025-07-29. 5 holders' latest filing reports 5% or more of common shares of beneficial interest. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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4. Who Runs It, And How To Reach Them

5. The Money: Funding, Valuation, Runway

6. Who Pays Them, And Who They Are Up Against

7. Warning Bells

8. Sources

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Voting and dispositive power, as filed

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The latest filing identifies Office Properties Income Trust by CUSIP 67623C307 and gives its principal executive office as Two Newton Place, 255 Washington Street, Suite 300, Newton, MA 02458 (SCHEDULE 13D/A, 2026-08-19).

Source of funds (Item 3)

On October 30, 2025, the Issuer and certain of its subsidiaries, filed voluntary petitions for relief under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the Southern District of Texas (the "Bankruptcy Court"). On April 22, 2026, the Bankruptcy Court entered an order confirming the Fourth Amended Joint Chapter 11 Plan of Reorganization of Office Properties Income Trust and Its Debtor Affiliates (the "Plan").Redwood Capital Management, LLC, SCHEDULE 13D/A, 2026-08-19

Purpose of Transaction (Item 4)

Redwood Capital Management, LLC

The response to Item 3 of this Schedule 13D is incorporated by reference herein. The Reporting Persons acquired the Secured Exit Notes and the Common Shares in connection with the Issuer's emergence from bankruptcy on the Effective Date. On the Effective Date, the Issuer adopted its Fourth Amended and Restated Bylaws, which provides that the Board of Trustees (the "Board") of the Issuer shall include up to two Trustees who are initially designated for appointment to the Board by Redwood Capital, with such designation right consisting of (a) up to two Trustees so long as Redwood Capital and its affiliates beneficially own 10% or more of the outstanding Common Shares of the Issuer and (b) up to one Trustee so long as Redwood Capital and its affiliates beneficially own 5% or more of the outstanding Common Shares of the Issuer. Pursuant to the Fourth Amended and Restated Bylaws, Jonathan Kolatch was appointed to the Board, effective as of the Effective Date, as designated by Redwood Capital. Redwood Capital did not initially designate a second Trustee for appointment as of the Effective Date. In addition, as of the Effective Date, the Issuer entered into a board observation rights agreement with Redwood Capital (the "Board Observation Rights Agreement"), which provides that Redwood Capital is entitled to appoint one non-voting Board Observer so long as Redwood Capital beneficially owns 15% or more of the outstanding Common Shares of the Issuer. Redwood Capital did not …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-08-19; the filing has the rest

Helix Partners Management LP

The response to Item 3 of this Schedule 13D is incorporated by reference herein. The Reporting Persons acquired the Secured Exit Notes, the Common Shares, and the Warrants in connection with the Issuer's emergence from bankruptcy on the Effective Date. On the Effective Date, the Issuer adopted its Fourth Amended and Restated Bylaws, which provides that the Board of Trustees (the "Board") of the Issuer shall include up to three Trustees who are initially designated for appointment to the Board by Helix Partners, with such designation right consisting of (a) up to three Trustees so long as Helix Partners and its affiliates beneficially own 15% or more of the outstanding Common Shares of the Issuer, (b) up to two Trustees so long as Helix Partners and its affiliates beneficially own 10% or more of the outstanding Common Shares of the Issuer and (c) up to one Trustee so long as Helix Partners and its affiliates beneficially own 5% or more of the outstanding Common Shares of the Issuer. Pursuant to the Fourth Amended and Restated Bylaws, Mr. Heller was appointed to the Board, as designated by Helix Partners, and Mr. Heller was also named the Chairman of the Board, effective as of the Effective Date. Helix Partners did not initially designate other Trustees for appointment as of the Effective Date. In addition, as of the Effective Date, the Issuer entered into a board observation rights agreement with Helix Partners (the "Board Observation Rights Agreement"), which provides …The first part of Item 4 of the SCHEDULE 13D filed 2026-06-25; the filing has the rest

Timeline

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Questions about who owns Office Properties Income Trust

Who owns Office Properties Income Trust?

On this page, 5 holders' latest ownership filings report 5% or more of Office Properties Income Trust: Helix Partners Management LP (25.3%, Schedule 13D, filed 2026-06-25), Redwood Capital Management, LLC (18%, Schedule 13D/A, filed 2026-08-19), Barclays PLC (8.43%, Schedule 13G, filed 2026-08-13), Whitebox Advisors LLC (8.2%, Schedule 13G, filed 2026-07-06) and Liberty Mutual Holding Company Inc. (6%, Schedule 13G, filed 2026-07-10).

Who are the largest shareholders of Office Properties Income Trust?

By the share each holder's latest filing reports, the largest holders of Office Properties Income Trust on this page are Helix Partners Management LP (25.3%), Redwood Capital Management, LLC (18%) and Barclays PLC (8.43%).

When did Helix Partners Management LP buy into Office Properties Income Trust?

The filings give report dates, not purchase dates. The earliest filing from Helix Partners Management LP on this page is the Schedule 13D, filed 2026-06-25, reporting 25.3%.

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 Office Properties Income Trust

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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.

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