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The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $164.16 to $165.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":3588,"source":{"system":"sec-edgar","filing":"0001628280-26-056327","document":"wk-form4_1786568513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056327/wk-form4_1786568513.xml","form_type":"4"}},{"id":689725,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24299,"kind":"person","name":"O'Neill Julie","position":1,"cik":"0001630299","reported_name":"O'Neill Julie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:01:57.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":105,"price":163.77,"value":17195.85,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $163.15 to $164.1499, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":4230,"source":{"system":"sec-edgar","filing":"0001628280-26-056327","document":"wk-form4_1786568513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056327/wk-form4_1786568513.xml","form_type":"4"}},{"id":689724,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24299,"kind":"person","name":"O'Neill Julie","position":1,"cik":"0001630299","reported_name":"O'Neill Julie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:01:57.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":95,"price":162.72,"value":15458.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $162.08 to $163.0799, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":4335,"source":{"system":"sec-edgar","filing":"0001628280-26-056327","document":"wk-form4_1786568513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056327/wk-form4_1786568513.xml","form_type":"4"}},{"id":689723,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24299,"kind":"person","name":"O'Neill Julie","position":1,"cik":"0001630299","reported_name":"O'Neill Julie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary 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vesting."}],"balance_after":4430,"source":{"system":"sec-edgar","filing":"0001628280-26-056327","document":"wk-form4_1786568513.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056327/wk-form4_1786568513.xml","form_type":"4"}},{"id":689736,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24300,"kind":"person","name":"Murray Ciaran","position":1,"cik":"0001973437","reported_name":"Murray Ciaran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Share Units","published_at":"2026-08-12T21:00:33.000Z","date":"2026-08-10","kind":"grant","planned":false,"acquired":true,"shares":2047,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted share unit represents a contingent right to receive one ordinary share of the Issuer upon vesting, with a nominal conversion price equal to the par value of the ordinary shares (EUR 0.06) per underlying share automatically deducted from the reporting person's pay in connection with vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"These restricted share units were granted on August 10, 2026 and are scheduled to vest on May 22, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F8","text":"These restricted share units were granted on August 10, 2026 and are scheduled to vest on May 22, 2027."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F8","text":"These restricted share units were granted on August 10, 2026 and are scheduled to vest on May 22, 2027."}],"balance_after":2047,"derivative":{"underlying":"Ordinary 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contingent right to receive one ordinary share of the Issuer upon vesting, with a nominal conversion price equal to the par value of the ordinary shares (EUR 0.06) per underlying share automatically deducted from the reporting person's pay in connection with vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"These restricted share units were granted on May 22, 2025 and vested on August 10, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"These restricted share units were granted on May 22, 2025 and vested on August 10, 2026."}],"balance_after":0,"derivative":{"underlying":"Ordinary 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including shares to cover tax withholding obligations in connection with the vesting of compensatory equity awards."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $165.16 to $166.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":20452,"source":{"system":"sec-edgar","filing":"0001628280-26-056326","document":"wk-form4_1786568429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056326/wk-form4_1786568429.xml","form_type":"4"}},{"id":689733,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24300,"kind":"person","name":"Murray Ciaran","position":1,"cik":"0001973437","reported_name":"Murray Ciaran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:00:33.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":1880,"price":164.47,"value":309203.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The Reporting Person sold all shares that vested on August 10, 2026, including shares to cover tax withholding obligations in connection with the vesting of compensatory equity awards."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $164.16 to $165.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":20664,"source":{"system":"sec-edgar","filing":"0001628280-26-056326","document":"wk-form4_1786568429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056326/wk-form4_1786568429.xml","form_type":"4"}},{"id":689732,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24300,"kind":"person","name":"Murray Ciaran","position":1,"cik":"0001973437","reported_name":"Murray Ciaran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:00:33.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":305,"price":163.77,"value":49949.85,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The Reporting Person sold all shares that vested on August 10, 2026, including shares to cover tax withholding obligations in connection with the vesting of compensatory equity awards."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $163.15 to $164.1499, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":22544,"source":{"system":"sec-edgar","filing":"0001628280-26-056326","document":"wk-form4_1786568429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056326/wk-form4_1786568429.xml","form_type":"4"}},{"id":689731,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24300,"kind":"person","name":"Murray Ciaran","position":1,"cik":"0001973437","reported_name":"Murray Ciaran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:00:33.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":280,"price":162.72,"value":45561.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The Reporting Person sold all shares that vested on August 10, 2026, including shares to cover tax withholding obligations in connection with the vesting of compensatory equity awards."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $162.08 to $163.0799, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":22849,"source":{"system":"sec-edgar","filing":"0001628280-26-056326","document":"wk-form4_1786568429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056326/wk-form4_1786568429.xml","form_type":"4"}},{"id":689730,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24300,"kind":"person","name":"Murray Ciaran","position":1,"cik":"0001973437","reported_name":"Murray Ciaran","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary 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vesting."}],"balance_after":23129,"source":{"system":"sec-edgar","filing":"0001628280-26-056326","document":"wk-form4_1786568429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056326/wk-form4_1786568429.xml","form_type":"4"}},{"id":689722,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24298,"kind":"person","name":"Murphy Ronan Martin","position":1,"cik":"0001974743","reported_name":"Murphy Ronan Martin","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Share Units","published_at":"2026-08-12T21:00:07.000Z","date":"2026-08-10","kind":"grant","planned":false,"acquired":true,"shares":1324,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted share unit 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The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $165.16 to $166.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":3847,"source":{"system":"sec-edgar","filing":"0001628280-26-056324","document":"wk-form4_1786568402.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056324/wk-form4_1786568402.xml","form_type":"4"}},{"id":689719,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24298,"kind":"person","name":"Murphy Ronan Martin","position":1,"cik":"0001974743","reported_name":"Murphy Ronan Martin","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:00:07.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":590,"price":164.47,"value":97037.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $164.16 to $165.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":3914,"source":{"system":"sec-edgar","filing":"0001628280-26-056324","document":"wk-form4_1786568402.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056324/wk-form4_1786568402.xml","form_type":"4"}},{"id":689718,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24298,"kind":"person","name":"Murphy Ronan Martin","position":1,"cik":"0001974743","reported_name":"Murphy Ronan Martin","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:00:07.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":96,"price":163.77,"value":15721.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $163.15 to $164.1499, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":4504,"source":{"system":"sec-edgar","filing":"0001628280-26-056324","document":"wk-form4_1786568402.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056324/wk-form4_1786568402.xml","form_type":"4"}},{"id":689717,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24298,"kind":"person","name":"Murphy Ronan Martin","position":1,"cik":"0001974743","reported_name":"Murphy Ronan Martin","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T21:00:07.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":88,"price":162.72,"value":14319.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $162.08 to $163.0799, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":4600,"source":{"system":"sec-edgar","filing":"0001628280-26-056324","document":"wk-form4_1786568402.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056324/wk-form4_1786568402.xml","form_type":"4"}},{"id":689716,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24298,"kind":"person","name":"Murphy Ronan Martin","position":1,"cik":"0001974743","reported_name":"Murphy Ronan Martin","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary 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Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $165.16 to $166.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":3811,"source":{"system":"sec-edgar","filing":"0001628280-26-056321","document":"wk-form4_1786568364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056321/wk-form4_1786568364.xml","form_type":"4"}},{"id":689712,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24297,"kind":"person","name":"McCague Eugene Pacelli","position":1,"cik":"0001973720","reported_name":"McCague Eugene Pacelli","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:59:34.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":590,"price":164.47,"value":97037.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $164.16 to $165.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":3878,"source":{"system":"sec-edgar","filing":"0001628280-26-056321","document":"wk-form4_1786568364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056321/wk-form4_1786568364.xml","form_type":"4"}},{"id":689711,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24297,"kind":"person","name":"McCague Eugene Pacelli","position":1,"cik":"0001973720","reported_name":"McCague Eugene Pacelli","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:59:34.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":96,"price":163.77,"value":15721.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $163.15 to $164.1499, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":4468,"source":{"system":"sec-edgar","filing":"0001628280-26-056321","document":"wk-form4_1786568364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056321/wk-form4_1786568364.xml","form_type":"4"}},{"id":689710,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24297,"kind":"person","name":"McCague Eugene Pacelli","position":1,"cik":"0001973720","reported_name":"McCague Eugene Pacelli","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:59:34.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":88,"price":162.72,"value":14319.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $162.08 to $163.0799, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":4564,"source":{"system":"sec-edgar","filing":"0001628280-26-056321","document":"wk-form4_1786568364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056321/wk-form4_1786568364.xml","form_type":"4"}},{"id":689709,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24297,"kind":"person","name":"McCague Eugene Pacelli","position":1,"cik":"0001973720","reported_name":"McCague Eugene Pacelli","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary 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The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $164.16 to $165.1599, inclusive. 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The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $162.08 to $163.0799, inclusive. 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The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $165.16 to $166.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":2087,"source":{"system":"sec-edgar","filing":"0001628280-26-056301","document":"wk-form4_1786567617.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056301/wk-form4_1786567617.xml","form_type":"4"}},{"id":689697,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24294,"kind":"person","name":"CLIMAX JOHN DR","position":1,"cik":"0001167476","reported_name":"CLIMAX JOHN DR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:47:00.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":591,"price":164.47,"value":97201.77,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $164.16 to $165.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":2154,"source":{"system":"sec-edgar","filing":"0001628280-26-056301","document":"wk-form4_1786567617.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056301/wk-form4_1786567617.xml","form_type":"4"}},{"id":689696,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24294,"kind":"person","name":"CLIMAX JOHN DR","position":1,"cik":"0001167476","reported_name":"CLIMAX JOHN DR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:47:00.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":95,"price":163.77,"value":15558.15,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $163.15 to $164.1499, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":2745,"source":{"system":"sec-edgar","filing":"0001628280-26-056301","document":"wk-form4_1786567617.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056301/wk-form4_1786567617.xml","form_type":"4"}},{"id":689695,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24294,"kind":"person","name":"CLIMAX JOHN DR","position":1,"cik":"0001167476","reported_name":"CLIMAX JOHN DR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:47:00.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":88,"price":162.72,"value":14319.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $162.08 to $163.0799, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":2840,"source":{"system":"sec-edgar","filing":"0001628280-26-056301","document":"wk-form4_1786567617.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056301/wk-form4_1786567617.xml","form_type":"4"}},{"id":689694,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24294,"kind":"person","name":"CLIMAX JOHN DR","position":1,"cik":"0001167476","reported_name":"CLIMAX JOHN DR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Ordinary 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The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $165.16 to $166.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":5881,"source":{"system":"sec-edgar","filing":"0001628280-26-056296","document":"wk-form4_1786567584.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056296/wk-form4_1786567584.xml","form_type":"4"}},{"id":689688,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24293,"kind":"person","name":"Clerkin Nigel Bernard John","position":1,"cik":"0002085465","reported_name":"Clerkin Nigel Bernard John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:46:28.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":1591,"price":164.47,"value":261671.77,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $164.16 to $165.1599, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4."}],"balance_after":6061,"source":{"system":"sec-edgar","filing":"0001628280-26-056296","document":"wk-form4_1786567584.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056296/wk-form4_1786567584.xml","form_type":"4"}},{"id":689687,"issuer":{"id":3439,"kind":"organization","name":"ICON PLC","symbol":"ICLR"},"owners":[{"id":24293,"kind":"person","name":"Clerkin Nigel Bernard John","position":1,"cik":"0002085465","reported_name":"Clerkin Nigel Bernard John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Ordinary Shares","published_at":"2026-08-12T20:46:28.000Z","date":"2026-08-11","kind":"sale","planned":false,"acquired":false,"shares":259,"price":163.77,"value":42416.43,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted share units. The sale was to satisfy tax withholding obligations to be funded by a \"sell to cover\" transaction and does not represent a discretionary transaction by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple aggregated transactions at prices within the range of $163.15 to $164.1499, inclusive. 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