As of November 8, 2026, 6 holders' latest Schedule 13D or 13G filings report owning 5% or more of HMH Holding Inc. The largest reported stake is T. Rowe Price Associates, Inc.'s, at 24.4%. 12 filings are on record since April 6, 2026 (Schedule 13G, August 7, 2026).
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Key facts
- · Reporting person: Point72 Asset Management, L.P. · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Encompass Capital Advisors LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Wellington Management Group LLP · Sole voting: 0 · Shared voting: 726,415 · Sole dispositive: 0 · Shared dispositive: 760,497 · SCHEDULE 13G, 2026-08-13
- · Reporting person: Schroder Investment Management Group · Sole voting: 609,527 · Shared voting: 0 · Sole dispositive: 609,527 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-12
- · Reporting person: T. Rowe Price Associates, Inc. · Sole voting: 2,787,515 · Shared voting: 0 · Sole dispositive: 2,788,468 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-07
HMH Holding Inc. has 12 Schedule 13D or 13G filings on record since 2026-04-06. 6 holders' latest filing reports 5% or more of class a common stock, par value $0.01 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| T. Rowe Price Associates, Inc. | 24.4% | 2,788,468 | SCHEDULE 13G, 2026-08-07 | 2026-07-31 |
| Fmr LLC | 11.6% | 1,320,053 | SCHEDULE 13G, 2026-08-07 | 2026-07-31 |
| Wellington Management Group LLP | 6.7% | 760,497 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| BlackRock, Inc. | 6.5% | 738,234 | SCHEDULE 13G, 2026-07-28 | 2026-06-30 |
| Citadel Advisors LLC | 6.3% | 665,923 | SCHEDULE 13G, 2026-04-09 | 2026-04-02 |
| Schroder Investment Management Group | 5.3% | 609,527 | SCHEDULE 13G, 2026-08-12 | 2026-06-30 |
| Millennium Management LLC | 1.4% | 160,894 | SCHEDULE 13G/A, 2026-07-09 | 2026-06-30 |
| Point72 Asset Management, L.P. | 0% | 0 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Encompass Capital Advisors LLC | 0% | 0 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
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More on HMH Holding Inc. and the records around it.
HMH Holding Inc. elsewhere on the record
- IPO filing Sep 2026
- Leadership changes Apr 2026
- Who owns it
Companies that share a holder
- SCHRODER INVESTMENT MANAGEMENT GROUP also filed stake reports on 9 other companies: ManpowerGroup Inc (Aug 2026), John Wiley & Sons Inc (May 2026), AUNA S.A. (Feb 2026)
- Encompass Capital Advisors LLC also filed stake reports on 18 other companies: Sable Offshore Corp. (Oct 2026), EagleRock Land, LLC (Aug 2026), Ranger Energy Services, Inc. (Aug 2026)
- Citadel Advisors LLC also filed stake reports on 58 other companies: Quantinuum Inc. (Oct 2026), REALLOYS INC. (Oct 2026), STARFIGHTERS SPACE, INC. (Oct 2026)
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What the Full Report on HMH Holding Inc. 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
Sources
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| T. Rowe Price Associates, Inc. | 2,787,515 | 0 | 2,788,468 | 0 | SCHEDULE 13G, 2026-08-07 |
| Fmr LLC | 1,320,036 | 0 | 1,320,053 | 0 | SCHEDULE 13G, 2026-08-07 |
| Abigail P. Johnson | 0 | 0 | 1,320,053 | 0 | SCHEDULE 13G, 2026-08-07 |
| Wellington Management Group LLP | 0 | 726,415 | 0 | 760,497 | SCHEDULE 13G, 2026-08-13 |
| Wellington Group Holdings LLP | 0 | 726,415 | 0 | 760,497 | SCHEDULE 13G, 2026-08-13 |
| Wellington Investment Advisors Holdings LLP | 0 | 726,415 | 0 | 760,497 | SCHEDULE 13G, 2026-08-13 |
| Wellington Management Company LLP | 0 | 717,394 | 0 | 717,394 | SCHEDULE 13G, 2026-08-13 |
| BlackRock, Inc. | 731,147 | 0 | 738,234 | 0 | SCHEDULE 13G, 2026-07-28 |
| Schroder Investment Management Group | 609,527 | 0 | 609,527 | 0 | SCHEDULE 13G, 2026-08-12 |
| Schroder Investment Management North America Inc. | 609,527 | 0 | 609,527 | 0 | SCHEDULE 13G, 2026-08-12 |
| Millennium Management LLC | 0 | 160,894 | 0 | 160,894 | SCHEDULE 13G/A, 2026-07-09 |
| Millennium Group Management LLC | 0 | 160,894 | 0 | 160,894 | SCHEDULE 13G/A, 2026-07-09 |
| Israel A. Englander | 0 | 160,894 | 0 | 160,894 | SCHEDULE 13G/A, 2026-07-09 |
| Point72 Asset Management, L.P. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
| Point72 Capital Advisors, Inc. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
| Steven A. Cohen | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
| Encompass Capital Advisors LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
| Todd J. Kantor | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
| Encompass Capital Partners LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies HMH Holding Inc. by CUSIP 40445M100 and gives its principal executive office as 3300 North Sam Houston Parkway East, Houston, TX 77032 (SCHEDULE 13G/A, 2026-08-14).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-04-06 | Point72 Asset Management, L.P. | 5.5% | SCHEDULE 13G |
| 2026-04-08 | Millennium Management LLC | 5.9% | SCHEDULE 13G |
| 2026-04-08 | Encompass Capital Advisors LLC | 7.6% | SCHEDULE 13G |
| 2026-04-09 | Citadel Advisors LLC | 6.3% | SCHEDULE 13G |
| 2026-07-09 | Millennium Management LLC | 1.4% | SCHEDULE 13G/A |
| 2026-07-28 | BlackRock, Inc. | 6.5% | SCHEDULE 13G |
| 2026-08-07 | T. Rowe Price Associates, Inc. | 24.4% | SCHEDULE 13G |
| 2026-08-07 | Fmr LLC | 11.6% | SCHEDULE 13G |
| 2026-08-12 | Schroder Investment Management Group | 5.3% | SCHEDULE 13G |
| 2026-08-13 | Wellington Management Group LLP | 6.7% | SCHEDULE 13G |
| 2026-08-14 | Point72 Asset Management, L.P. | 0% | SCHEDULE 13G/A |
| 2026-08-14 | Encompass Capital Advisors LLC | 0% | SCHEDULE 13G/A |
Questions about who owns HMH Holding Inc.
Who owns HMH Holding Inc.?
On this page, 6 holders' latest ownership filings report 5% or more of HMH Holding Inc.: T. Rowe Price Associates, Inc. (24.4%, Schedule 13G, filed 2026-08-07), Fmr LLC (11.6%, Schedule 13G, filed 2026-08-07), Wellington Management Group LLP (6.7%, Schedule 13G, filed 2026-08-13), BlackRock, Inc. (6.5%, Schedule 13G, filed 2026-07-28) and Citadel Advisors LLC (6.3%, Schedule 13G, filed 2026-04-09); 1 more is listed above.
Who are the largest shareholders of HMH Holding Inc.?
By the share each holder's latest filing reports, the largest holders of HMH Holding Inc. on this page are T. Rowe Price Associates, Inc. (24.4%), Fmr LLC (11.6%) and Wellington Management Group LLP (6.7%).
When did T. Rowe Price Associates, Inc. buy into HMH Holding Inc.?
The filings give report dates, not purchase dates. The earliest filing from T. Rowe Price Associates, Inc. on this page is the Schedule 13G, filed 2026-08-07, reporting 24.4%.
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%); 12 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 HMH Holding Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| September 28, 2026 | IPO filing, Form S-1 | — | IPO filings | Source |
| April 2, 2026 | Leadership change: Lance T. Loeffler appointed | — | Leadership changes | Source |
| April 1, 2026 | IPO filing, Form 424B4 | — | IPO filings | Source |
| March 23, 2026 | IPO filing, Form S-1/A | $19 to $22 a share | IPO filings | Source |
| March 18, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| March 5, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| January 29, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| November 10, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| August 19, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| May 20, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| March 18, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| January 27, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
The newest 12 of 15 records.
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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.