ICLR
ICON PLC
175.60$
+1.9%
vs. previous close
Closing price · As of: Sep 28, 2026
Ownership
Ownership Structure
Who owns ICON PLC (ICLR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.9% of the shares are freely tradable; institutional investors hold 107.5%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
107.5%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
0.4%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.9%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
3.5%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
77Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Artisan Partners Limited Partnership | 11.19 | 8,636,406 | +4.3 | 06/30/2026 |
| Wellington Management Company LLP | 6.90 | 5,320,054 | -10.0 | 06/30/2026 |
| Harris Associates L.P. | 5.79 | 4,468,146 | +2.7 | 06/30/2026 |
| FMR Inc | 5.41 | 4,174,006 | +34.7 | 03/31/2026 |
| Amvescap Plc. | 5.03 | 3,878,869 | +3.2 | 03/31/2026 |
| Brave Warrior Advisors LLC | 4.09 | 3,153,308 | +5.2 | 06/30/2026 |
| Greenhaven Associates Inc | 4.02 | 3,100,615 | +54.8 | 06/30/2026 |
| Principal Financial Group Inc | 3.82 | 2,950,974 | -10.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Artisan International Value | 8.74 | 6,744,902 | +6.7 | 06/30/2026 |
| Artisan International Value Investor | 8.74 | 6,744,902 | +6.7 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Murray Ciaran | Director | 20,452 | 3,591,371 $ | Aug 11, 2026 | direct |
| Grais Linda | Director | 6,162 | 1,082,047 $ | Aug 11, 2026 | direct |
| Clerkin Nigel Bernard John | Chief Financial Officer | 5,881 | 1,032,704 $ | Aug 11, 2026 | direct |
| Murphy Ronan Martin | Director | 3,847 | 675,533 $ | Sep 17, 2026 | direct |
| McCague Eugene Pacelli | Director | 3,811 | 669,212 $ | Sep 17, 2026 | direct |
| O'Neill Julie | Director | 3,515 | 617,234 $ | Aug 11, 2026 | direct |
| Climax John Dr | Director | 2,087 | 366,477 $ | Sep 16, 2026 | direct |
| Whitaker Anne Clem | Director | 891 | 156,460 $ | Aug 11, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 17, 2026 | McCague Eugene Pacelli | Director | Sell | 3,255 | 175.00 | 569,625 |
| Sep 17, 2026 | McCague Eugene Pacelli | Director | Other | 3,255 | 125.74 | 409,284 |
| Sep 17, 2026 | Murphy Ronan Martin | Director | Sell | 5,005 | 175.00 | 875,875 |
| Sep 17, 2026 | Murphy Ronan Martin | Director | Other | 5,005 | 125.74 | 629,329 |
| Sep 16, 2026 | Climax John Dr | Director | Sell | 5,005 | 175.00 | 875,875 |
| Sep 16, 2026 | Climax John Dr | Director | Other | 5,005 | 125.74 | 629,329 |
| Aug 11, 2026 | Whitaker Anne Clem | Director | Sell | 67 | 165.51 | 11,089 |
| Aug 11, 2026 | Whitaker Anne Clem | Director | Sell | 590 | 164.47 | 97,037 |
| Aug 11, 2026 | Whitaker Anne Clem | Director | Sell | 96 | 163.77 | 15,722 |
| Aug 11, 2026 | Whitaker Anne Clem | Director | Sell | 88 | 162.72 | 14,319 |
| Aug 11, 2026 | O'Neill Julie | Director | Sell | 73 | 165.51 | 12,082 |
| Aug 11, 2026 | O'Neill Julie | Director | Sell | 642 | 164.47 | 105,590 |
| Aug 11, 2026 | O'Neill Julie | Director | Sell | 105 | 163.77 | 17,196 |
| Aug 11, 2026 | O'Neill Julie | Director | Sell | 95 | 162.72 | 15,458 |
| Aug 11, 2026 | Murray Ciaran | Director | Sell | 212 | 165.51 | 35,088 |
| Aug 11, 2026 | Murray Ciaran | Director | Sell | 1,880 | 164.47 | 309,204 |
| Aug 11, 2026 | Murray Ciaran | Director | Sell | 305 | 163.77 | 49,950 |
| Aug 11, 2026 | Murray Ciaran | Director | Sell | 280 | 162.72 | 45,562 |
| Aug 11, 2026 | Murphy Ronan Martin | Director | Sell | 67 | 165.51 | 11,089 |
| Aug 11, 2026 | Murphy Ronan Martin | Director | Sell | 590 | 164.47 | 97,037 |
| Aug 11, 2026 | Murphy Ronan Martin | Director | Sell | 96 | 163.77 | 15,722 |
| Aug 11, 2026 | Murphy Ronan Martin | Director | Sell | 88 | 162.72 | 14,319 |
| Aug 11, 2026 | McCague Eugene Pacelli | Director | Sell | 67 | 165.51 | 11,089 |
| Aug 11, 2026 | McCague Eugene Pacelli | Director | Sell | 590 | 164.47 | 97,037 |
| Aug 11, 2026 | McCague Eugene Pacelli | Director | Sell | 96 | 163.77 | 15,722 |
| Aug 11, 2026 | McCague Eugene Pacelli | Director | Sell | 88 | 162.72 | 14,319 |
| Aug 11, 2026 | Grais Linda | Director | Sell | 67 | 165.51 | 11,089 |
| Aug 11, 2026 | Grais Linda | Director | Sell | 590 | 164.47 | 97,037 |
| Aug 11, 2026 | Grais Linda | Director | Sell | 97 | 163.77 | 15,886 |
| Aug 11, 2026 | Grais Linda | Director | Sell | 87 | 162.72 | 14,157 |
| Aug 11, 2026 | Climax John Dr | Director | Sell | 67 | 165.51 | 11,089 |
| Aug 11, 2026 | Climax John Dr | Director | Sell | 591 | 164.47 | 97,202 |
| Aug 11, 2026 | Climax John Dr | Director | Sell | 95 | 163.77 | 15,558 |
| Aug 11, 2026 | Climax John Dr | Director | Sell | 88 | 162.72 | 14,319 |
| Aug 11, 2026 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 180 | 165.51 | 29,792 |
| Aug 11, 2026 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 1,591 | 164.47 | 261,672 |
| Aug 11, 2026 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 259 | 163.77 | 42,416 |
| Aug 11, 2026 | Clerkin Nigel Bernard John | Chief Financial Officer | Sell | 237 | 162.72 | 38,565 |
| Aug 10, 2026 | Whitaker Anne Clem | Director | Other | 1,732 | – | – |
| Aug 10, 2026 | O'Neill Julie | Director | Other | 1,732 | – | – |
| Aug 10, 2026 | Murray Ciaran | Director | Other | 2,677 | – | – |
| Aug 10, 2026 | Murphy Ronan Martin | Director | Other | 1,732 | – | – |
| Aug 10, 2026 | McCague Eugene Pacelli | Director | Other | 1,732 | – | – |
| Aug 10, 2026 | Grais Linda | Director | Other | 1,732 | – | – |
| Aug 10, 2026 | Climax John Dr | Director | Other | 1,732 | – | – |
| Aug 10, 2026 | Clerkin Nigel Bernard John | Chief Financial Officer | Other | 3,375 | – | – |
| Aug 10, 2026 | Clerkin Nigel Bernard John | Chief Financial Officer | Other | 918 | – | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 28, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.