As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Heidrick & Struggles International Inc. The largest reported stake is MAK Capital One L.L.C.'s, at 5.8%. 4 filings are on record since October 9, 2025 (Schedule 13D, November 5, 2025).
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Key facts
- · Reporting person: Renaissance Technologies LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-02-12
- · Reporting person: Dimensional Fund Advisors LP · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-01-21
- · Reporting person: MAK Capital Fund LP · Sole voting: 0 · Shared voting: 1,213,762 · Sole dispositive: 0 · Shared dispositive: 1,213,762 · SCHEDULE 13D, 2025-11-05
- · Holder: Dimensional Fund Advisors LP · Percent: 5.4% · SCHEDULE 13G/A
Heidrick & Struggles International Inc has 4 Schedule 13D or 13G filings on record since 2025-10-09. 1 holder's latest filing reports 5% or more of common stock, $.01 par value. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| MAK Capital One L.L.C. | 5.8% | 1,213,762 | SCHEDULE 13D, 2025-11-05 | 2025-10-27 |
| Dimensional Fund Advisors LP | 0% | 0 | SCHEDULE 13G/A, 2026-01-21 | 2025-12-31 |
| Renaissance Technologies LLC | 0% | 0 | SCHEDULE 13G/A, 2026-02-12 | 2025-12-31 |
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More on Heidrick & Struggles International Inc and the records around it.
Heidrick & Struggles International Inc elsewhere on the record
- Acquisition Dec 2025
Companies that share a holder
- MAK Capital Fund LP also filed stake reports on 3 other companies: PERMA FIX ENVIRONMENTAL SERVICES INC (Aug 2026), STANDARD BIOTOOLS INC. (Aug 2026), ClearPoint Neuro, Inc. (Aug 2026)
- Renaissance Technologies LLC also filed stake reports on 46 other companies: AMERICAN PUBLIC EDUCATION INC (Aug 2026), Bolt Biotherapeutics, Inc. (Aug 2026), Commercial Vehicle Group, Inc. (Aug 2026)
- Dimensional Fund Advisors LP also filed stake reports on 366 other companies: Acadia Healthcare Co Inc (Oct 2026), ADT Inc (Oct 2026), AGCO Corp (Oct 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| MAK Capital Fund LP | 0 | 1,213,762 | 0 | 1,213,762 | SCHEDULE 13D, 2025-11-05 |
| MAK Capital One L.L.C. | 0 | 1,213,762 | 0 | 1,213,762 | SCHEDULE 13D, 2025-11-05 |
| Michael A. Kaufman | 0 | 1,213,762 | 0 | 1,213,762 | SCHEDULE 13D, 2025-11-05 |
| Dimensional Fund Advisors LP | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-01-21 |
| Renaissance Technologies LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-12 |
| Renaissance Technologies Holdings Corporation | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-12 |
The latest filing names Heidrick & Struggles International Inc, with its principal executive office as 233 S WACKER DRIVE, SUITE 4900, CHICAGO, IL 60606-6303 (SCHEDULE 13G/A, 2026-02-12).
Source of funds (Item 3)
The Reporting Persons acquired the Shares reported herein at an aggregate cost of $40,699,129. The funds used to purchase the Shares were obtained from the general working capital of MAK Fund which may at any given time include funds borrowed in the ordinary course in its margin account.MAK Capital One L.L.C., SCHEDULE 13D, 2025-11-05
Purpose of Transaction (Item 4)
MAK Capital One L.L.C.
The Shares reported herein as being beneficially owned by the Reporting Persons were acquired for investment purposes. The response to Item 6 below is incorporated herein by reference.Item 4 of the SCHEDULE 13D filed 2025-11-05
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-10-09 | Dimensional Fund Advisors LP | 5.4% | SCHEDULE 13G/A |
| 2025-11-05 | MAK Capital One L.L.C. | 5.8% | SCHEDULE 13D |
| 2026-01-21 | Dimensional Fund Advisors LP | 0% | SCHEDULE 13G/A |
| 2026-02-12 | Renaissance Technologies LLC | 0% | SCHEDULE 13G/A |
Questions about who owns Heidrick & Struggles International Inc
Who owns Heidrick & Struggles International Inc?
On this page, one holder's latest ownership filing reports 5% or more of Heidrick & Struggles International Inc: MAK Capital One L.L.C. (5.8%, Schedule 13D, filed 2025-11-05).
When did MAK Capital One L.L.C. buy into Heidrick & Struggles International Inc?
The filings give report dates, not purchase dates. The earliest filing from MAK Capital One L.L.C. on this page is the Schedule 13D, filed 2025-11-05, reporting 5.8%.
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%); 4 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 Heidrick & Struggles International Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| December 10, 2025 | Acquired by Heron BidCo, LLC | — | Acquisition | 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.