As of November 6, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of Trustmark Corporation. The largest reported stake is Vanguard Portfolio Management's, at 6.03%. 9 filings are on record since August 11, 2025 (Schedule 13G, April 29, 2026).
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Key facts
- · Reporting person: Wellington Management Group LLP · Sole voting: 0 · Shared voting: 1,529,504 · Sole dispositive: 0 · Shared dispositive: 1,529,504 · SCHEDULE 13G/A, 2026-08-13
- · Reporting person: State Street Corporation · Sole voting: 0 · Shared voting: 422,212 · Sole dispositive: 0 · Shared dispositive: 2,974,965 · SCHEDULE 13G, 2026-05-12
- · Reporting person: Vanguard Capital Management · Sole voting: 441,397 · Shared voting: 0 · Sole dispositive: 2,986,819 · Shared dispositive: 0 · SCHEDULE 13G, 2026-04-30
- · Reporting person: Vanguard Portfolio Management · Sole voting: 30,788 · Shared voting: 0 · Sole dispositive: 3,555,591 · Shared dispositive: 0 · SCHEDULE 13G, 2026-04-29
- · Holder: The Vanguard Group · Percent: 0% · SCHEDULE 13G/A
Trustmark Corporation has 9 Schedule 13D or 13G filings on record since 2025-08-11. 3 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 |
|---|---|---|---|---|
| Vanguard Portfolio Management | 6.03% | 3,555,591 | SCHEDULE 13G, 2026-04-29 | 2026-03-31 |
| State Street Corporation | 5.1% | 2,974,965 | SCHEDULE 13G, 2026-05-12 | 2026-03-31 |
| Vanguard Capital Management | 5.07% | 2,986,819 | SCHEDULE 13G, 2026-04-30 | 2026-03-31 |
| Earnest Partners LLC | 4.8% | 2,908,212 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| Robert M Hearin Support Foundation | 4.53% | 2,660,000 | SCHEDULE 13G/A, 2026-02-10 | 2026-02-04 |
| Wellington Management Group LLP | 2.6% | 1,529,504 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on Trustmark Corporation and the records around it.
Trustmark Corporation elsewhere on the record
- Leadership changes May 2026
- Who owns it
Companies that share a holder
- EARNEST PARTNERS LLC also filed stake reports on 18 other companies: FORMFACTOR INC (Aug 2026), PAPA JOHNS INTERNATIONAL INC (Aug 2026), Sabre Corp (Aug 2026)
- Wellington Management Group LLP also filed stake reports on 240 other companies: Hub Group, Inc. (Oct 2026), Latham Group, Inc. (Oct 2026), Redwood Trust, Inc. (Oct 2026)
- STATE STREET CORPORATION also filed stake reports on 343 other companies: TRADE DESK INC/THE (Oct 2026), CENTRUS ENERGY CORP (Sep 2026), ACADIA PHARMACEUTICALS INC (Aug 2026)
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What the Full Report on Trustmark Corporation covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Vanguard Portfolio Management | 30,788 | 0 | 3,555,591 | 0 | SCHEDULE 13G, 2026-04-29 |
| State Street Corporation | 0 | 422,212 | 0 | 2,974,965 | SCHEDULE 13G, 2026-05-12 |
| Vanguard Capital Management | 441,397 | 0 | 2,986,819 | 0 | SCHEDULE 13G, 2026-04-30 |
| Wellington Management Group LLP | 0 | 1,529,504 | 0 | 1,529,504 | SCHEDULE 13G/A, 2026-08-13 |
| Wellington Group Holdings LLP | 0 | 1,529,504 | 0 | 1,529,504 | SCHEDULE 13G/A, 2026-08-13 |
| Wellington Investment Advisors Holdings LLP | 0 | 1,529,504 | 0 | 1,529,504 | SCHEDULE 13G/A, 2026-08-13 |
The latest filing identifies Trustmark Corporation by CUSIP 898402102 and gives its principal executive office as 248 East Capitol Street, Jackson (SCHEDULE 13G/A, 2026-08-13).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-11 | State Street Corporation | 5% | SCHEDULE 13G |
| 2025-08-14 | Earnest Partners LLC | 4.8% | SCHEDULE 13G/A |
| 2025-12-03 | Robert M Hearin Support Foundation | 4.57% | SCHEDULE 13D/A |
| 2026-02-10 | Robert M Hearin Support Foundation | 4.53% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-29 | Vanguard Portfolio Management | 6.03% | SCHEDULE 13G |
| 2026-04-30 | Vanguard Capital Management | 5.07% | SCHEDULE 13G |
| 2026-05-12 | State Street Corporation | 5.1% | SCHEDULE 13G |
| 2026-08-13 | Wellington Management Group LLP | 2.6% | SCHEDULE 13G/A |
Questions about who owns Trustmark Corporation
Who owns Trustmark Corporation?
On this page, 3 holders' latest ownership filings report 5% or more of Trustmark Corporation: Vanguard Portfolio Management (6.03%, Schedule 13G, filed 2026-04-29), State Street Corporation (5.1%, Schedule 13G, filed 2026-05-12) and Vanguard Capital Management (5.07%, Schedule 13G, filed 2026-04-30).
Who are the largest shareholders of Trustmark Corporation?
By the share each holder's latest filing reports, the largest holders of Trustmark Corporation on this page are Vanguard Portfolio Management (6.03%), State Street Corporation (5.1%) and Vanguard Capital Management (5.07%).
When did Vanguard Portfolio Management buy into Trustmark Corporation?
The filings give report dates, not purchase dates. The earliest filing from Vanguard Portfolio Management on this page is the Schedule 13G, filed 2026-04-29, reporting 6.03%.
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%); 9 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 Trustmark Corporation
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| May 19, 2026 | Leadership change: Wayne A. Stevens departs, President | — | Leadership changes | Source |
| March 30, 2026 | Leadership change: Thomas C. Owens appointed, Chief Operating Officer, and 1 more | — | 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.