As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Icon Plc. The largest reported stake is Artisan Partners Asset Management Inc.'s, at 10.9%. 14 filings are on record since July 3, 2025 (Schedule 13G/A, March 6, 2026).
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Key facts
- · Reporting person: Fmr LLC · Sole voting: 6,559,041 · Shared voting: 0 · Sole dispositive: 6,594,248 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-11-05
- · Reporting person: Invesco Ltd. · Sole voting: 5,198,110 · Shared voting: 0 · Sole dispositive: 5,264,236 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-13
- · Holder: Fmr LLC · Percent: 6.9% · SCHEDULE 13G/A
- · Holder: Harris Associates L P · Percent: 5.7% · SCHEDULE 13G
- · Holder: Wellington Management Group LLP · Percent: 7.7% · SCHEDULE 13G/A
Icon Plc has 14 Schedule 13D or 13G filings on record since 2025-07-03. 5 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 |
|---|---|---|---|---|
| Artisan Partners Asset Management Inc. | 10.9% | 8,361,303 | SCHEDULE 13G/A, 2026-03-06 | 2026-02-27 |
| Fmr LLC | 8.5% | 6,594,248 | SCHEDULE 13G/A, 2026-11-05 | 2026-09-30 |
| Wellington Management Group LLP | 7.7% | 5,913,037 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Invesco Ltd. | 6.9% | 5,264,236 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| Harris Associates L P | 5.7% | 4,351,317 | SCHEDULE 13G, 2026-05-15 | 2026-03-31 |
| WCM Investment Management, LLC | 0.25% | 199,946 | SCHEDULE 13G/A, 2025-07-03 | 2025-06-30 |
| Orbis Investment Management Ltd | 0% | 0 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
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Keep reading
More on Icon Plc and the records around it.
Icon Plc elsewhere on the record
Companies that share a holder
- WCM Investment Management, LLC also filed stake reports on 5 other companies: Brookdale Senior Living Inc (Apr 2026), CI&T Inc (Aug 2025), Freshpet, Inc. (Aug 2025)
- Artisan Partners Asset Management Inc. also filed stake reports on 16 other companies: Ascendis Pharma A/S (Aug 2026), AXALTA COATING SYSTEMS LTD. (Aug 2026), iRhythm Holdings, Inc. (Aug 2026)
- HARRIS ASSOCIATES L P also filed stake reports on 19 other companies: Corebridge Financial, Inc. (May 2026), Lithia Motors, Inc. (May 2026), Paycom Software, Inc. (May 2026)
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The Short Answer
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What They Do, And How The Money Works
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The Money: Funding, Valuation, Runway
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Fmr LLC | 6,559,041 | 0 | 6,594,248 | 0 | SCHEDULE 13G/A, 2026-11-05 |
| Abigail P. Johnson | 0 | 0 | 6,594,248 | 0 | SCHEDULE 13G/A, 2026-11-05 |
| Invesco Ltd. | 5,198,110 | 0 | 5,264,236 | 0 | SCHEDULE 13G/A, 2026-08-13 |
The latest filing identifies Icon Plc by CUSIP G4705A100 and gives its principal executive office as SOUTH COUNTY BUSINESS PARK, LEOPARDSTOWN, DUBLIN 18 (SCHEDULE 13G/A, 2026-11-05).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-03 | WCM Investment Management, LLC | 0.25% | SCHEDULE 13G/A |
| 2025-08-12 | Artisan Partners Asset Management Inc. | 9% | SCHEDULE 13G/A |
| 2025-11-12 | Wellington Management Group LLP | 6% | SCHEDULE 13G |
| 2025-11-14 | Orbis Investment Management Ltd | 5.3% | SCHEDULE 13G |
| 2026-02-17 | Orbis Investment Management Ltd | 5.5% | SCHEDULE 13G/A |
| 2026-03-06 | Artisan Partners Asset Management Inc. | 10.9% | SCHEDULE 13G/A |
| 2026-05-06 | Fmr LLC | 5.5% | SCHEDULE 13G |
| 2026-05-06 | Invesco Ltd. | 5.1% | SCHEDULE 13G |
| 2026-05-15 | Harris Associates L P | 5.7% | SCHEDULE 13G |
| 2026-05-15 | Wellington Management Group LLP | 7.7% | SCHEDULE 13G/A |
| 2026-05-15 | Orbis Investment Management Ltd | 0% | SCHEDULE 13G/A |
| 2026-08-06 | Fmr LLC | 6.9% | SCHEDULE 13G/A |
| 2026-08-13 | Invesco Ltd. | 6.9% | SCHEDULE 13G/A |
| 2026-11-05 | Fmr LLC | 8.5% | SCHEDULE 13G/A |
Questions about who owns Icon Plc
Who owns Icon Plc?
On this page, 5 holders' latest ownership filings report 5% or more of Icon Plc: Artisan Partners Asset Management Inc. (10.9%, Schedule 13G/A, filed 2026-03-06), Fmr LLC (8.5%, Schedule 13G/A, filed 2026-11-05), Wellington Management Group LLP (7.7%, Schedule 13G/A, filed 2026-05-15), Invesco Ltd. (6.9%, Schedule 13G/A, filed 2026-08-13) and Harris Associates L P (5.7%, Schedule 13G, filed 2026-05-15).
Who are the largest shareholders of Icon Plc?
By the share each holder's latest filing reports, the largest holders of Icon Plc on this page are Artisan Partners Asset Management Inc. (10.9%), Fmr LLC (8.5%) and Wellington Management Group LLP (7.7%).
When did Artisan Partners Asset Management Inc. buy into Icon Plc?
The filings give report dates, not purchase dates. The earliest filing from Artisan Partners Asset Management Inc. on this page is the Schedule 13G/A, filed 2025-08-12, reporting 9%; its latest, Schedule 13G/A filed 2026-03-06, reports 10.9%. 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%); 14 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.