As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of InfuSystem Holdings, Inc. The largest reported stake is BlackRock, Inc.'s, at 6.4%. 7 filings are on record since July 17, 2025 (Schedule 13G, July 28, 2026).
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Key facts
- · Reporting person: BlackRock, Inc. · Sole voting: 1,269,273 · Shared voting: 0 · Sole dispositive: 1,286,129 · Shared dispositive: 0 · SCHEDULE 13G, 2026-07-28
- · Reporting person: Minerva Advisors LLC · Sole voting: 764,517 · Shared voting: 314,214 · Sole dispositive: 764,517 · Shared dispositive: 314,214 · SCHEDULE 13G/A, 2026-02-17
- · Holder: Minerva Advisors LLC · Percent: 5% · SCHEDULE 13G
- · Reporting person: AWM Investment Company, Inc. · Sole voting: 561,656 · Shared voting: 0 · Sole dispositive: 561,656 · Shared dispositive: 0 · SCHEDULE 13G/A, 2025-11-13
- · Holder: AWM Investment Company, Inc. · Percent: 6.1% · SCHEDULE 13G/A
InfuSystem Holdings, Inc has 7 Schedule 13D or 13G filings on record since 2025-07-17. 2 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 |
|---|---|---|---|---|
| BlackRock, Inc. | 6.4% | 1,286,129 | SCHEDULE 13G, 2026-07-28 | 2026-06-30 |
| Minerva Advisors LLC | 5.3% | 1,078,731 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| The Vanguard Group | 4.56% | 957,638 | SCHEDULE 13G/A, 2025-07-29 | 2025-06-30 |
| AWM Investment Company, Inc. | 2.8% | 561,656 | SCHEDULE 13G/A, 2025-11-13 | 2025-09-30 |
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More on InfuSystem Holdings, Inc and the records around it.
InfuSystem Holdings, Inc elsewhere on the record
Companies that share a holder
- Minerva Advisors LLC also filed stake reports on 10 other companies: Kewaunee Scientific Corporation (Jun 2026), DLH Holdings Corp. (Feb 2026), The Eastern Company (Feb 2026)
- AWM Investment Company, Inc. also filed stake reports on 32 other companies: 908 Devices Inc. (Aug 2026), Brazil Potash Corp. (Aug 2026), EVERSPIN TECHNOLOGIES INC. (Aug 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
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What the Full Report on InfuSystem Holdings, Inc 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
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. | 1,269,273 | 0 | 1,286,129 | 0 | SCHEDULE 13G, 2026-07-28 |
| Minerva Advisors LLC | 764,517 | 314,214 | 764,517 | 314,214 | SCHEDULE 13G/A, 2026-02-17 |
| Minerva Group LP | 764,517 | 0 | 764,517 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Minerva Gp, LP | 764,517 | 0 | 764,517 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Minerva Gp, Inc. | 764,517 | 0 | 764,517 | 0 | SCHEDULE 13G/A, 2026-02-17 |
| Cohen David P | 764,517 | 314,214 | 764,517 | 314,214 | SCHEDULE 13G/A, 2026-02-17 |
| AWM Investment Company, Inc. | 561,656 | 0 | 561,656 | 0 | SCHEDULE 13G/A, 2025-11-13 |
The latest filing identifies InfuSystem Holdings, Inc by CUSIP 45685K102 and gives its principal executive office as 3851 WEST HAMLIN ROAD, ROCHESTER HILLS, MI 48309 (SCHEDULE 13G, 2026-07-28).
What the percentages are based on
Minerva Advisors LLC* - 5.3% Minerva Group, LP - 3.8% Minerva GP, LP* - 3.8% Minerva GP, Inc.* - 3.8% David P. Cohen* - 5.3% *Each of these reporting persons is deemed a beneficial owner of the 3.8% of the shares of the Issuer held by Minerva Group, LP. David P. Cohen is also deemed a beneficial owner of the 5.3% of the shares of the Issuer beneficially owned by Minerva Advisors LLC.Minerva Advisors LLC, SCHEDULE 13G/A, 2026-02-17
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 1.9% | SCHEDULE 13G/A |
| 2025-07-29 | The Vanguard Group | 4.56% | SCHEDULE 13G/A |
| 2025-08-14 | AWM Investment Company, Inc. | 6.1% | SCHEDULE 13G/A |
| 2025-11-13 | AWM Investment Company, Inc. | 2.8% | SCHEDULE 13G/A |
| 2025-12-03 | Minerva Advisors LLC | 5% | SCHEDULE 13G |
| 2026-02-17 | Minerva Advisors LLC | 5.3% | SCHEDULE 13G/A |
| 2026-07-28 | BlackRock, Inc. | 6.4% | SCHEDULE 13G |
Questions about who owns InfuSystem Holdings, Inc
Who owns InfuSystem Holdings, Inc?
On this page, 2 holders' latest ownership filings report 5% or more of InfuSystem Holdings, Inc: BlackRock, Inc. (6.4%, Schedule 13G, filed 2026-07-28) and Minerva Advisors LLC (5.3%, Schedule 13G/A, filed 2026-02-17).
Who are the largest shareholders of InfuSystem Holdings, Inc?
By the share each holder's latest filing reports, the largest holders of InfuSystem Holdings, Inc on this page are BlackRock, Inc. (6.4%) and Minerva Advisors LLC (5.3%).
When did BlackRock, Inc. buy into InfuSystem Holdings, Inc?
The filings give report dates, not purchase dates. The earliest filing from BlackRock, Inc. on this page is the Schedule 13G/A, filed 2025-07-17, reporting 1.9%; its latest, Schedule 13G filed 2026-07-28, reports 6.4%. 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%); 7 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.
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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.