{"transactions":[{"id":4622552,"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":"Stock Options","published_at":"2026-09-18T10:08:04.000Z","date":"2026-09-17","kind":"exercise","planned":false,"acquired":false,"shares":3255,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Fully vested."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The stock options expire on the eighth anniversary of the grant date, May 18, 2018, subject to automatic extension until the 30th trading day following any period during which exercise is prohibited\nunder the Issuer's Share Trading Policy or applicable law, but in no event later than the tenth anniversary of the grant date."}],"balance_after":0,"derivative":{"exercise_price":125.74,"underlying":"Ordinary Shares","underlying_shares":3255},"source":{"system":"sec-edgar","filing":"0001628280-26-062608","document":"wk-form4_1789726081.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1973720/000162828026062608/wk-form4_1789726081.xml","form_type":"4"}},{"id":4622551,"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":"2026-09-18T10:08:04.000Z","date":"2026-09-17","kind":"sale","planned":false,"acquired":false,"shares":3255,"price":175,"value":569625.0,"ownership":{"direct":true},"balance_after":3811,"source":{"system":"sec-edgar","filing":"0001628280-26-062608","document":"wk-form4_1789726081.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1973720/000162828026062608/wk-form4_1789726081.xml","form_type":"4"}},{"id":4622550,"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":"2026-09-18T10:08:04.000Z","date":"2026-09-17","kind":"exercise","planned":false,"acquired":true,"shares":3255,"price":125.74,"value":409283.7,"ownership":{"direct":true},"balance_after":7066,"source":{"system":"sec-edgar","filing":"0001628280-26-062608","document":"wk-form4_1789726081.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1973720/000162828026062608/wk-form4_1789726081.xml","form_type":"4"}},{"id":689715,"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":"Restricted Share Units","published_at":"2026-08-12T20:59:34.000Z","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 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."}],"balance_after":1324,"derivative":{"underlying":"Ordinary Shares","underlying_shares":1324},"source":{"system":"sec-edgar","filing":"0001628280-26-056321","document":"wk-form4_1786568364.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056321/wk-form4_1786568364.xml","form_type":"4"}},{"id":689714,"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":"Restricted Share Units","published_at":"2026-08-12T20:59:34.000Z","date":"2026-08-10","kind":"exercise","planned":false,"acquired":false,"shares":1732,"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":"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 Shares","underlying_shares":1732},"source":{"system":"sec-edgar","filing":"0001628280-26-056321","document":"wk-form4_1786568364.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056321/wk-form4_1786568364.xml","form_type":"4"}},{"id":689713,"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":67,"price":165.51,"value":11089.17,"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":"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 Shares","published_at":"2026-08-12T20:59:34.000Z","date":"2026-08-10","kind":"exercise","planned":false,"acquired":true,"shares":1732,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These restricted share units were granted on May 22, 2025 and vested on August 10, 2026."},{"field":"price","element":"transactionPricePerShare","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."}],"balance_after":4652,"source":{"system":"sec-edgar","filing":"0001628280-26-056321","document":"wk-form4_1786568364.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026056321/wk-form4_1786568364.xml","form_type":"4"}},{"id":777634,"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":"Stock Options","published_at":"2026-05-15T12:38:09.000Z","date":"2026-05-14","kind":"grant","planned":false,"acquired":true,"shares":3255,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reflects the extension of the expiration date of the stock options for a 30 trading day period under the Company Share Trading Policy."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Reflects the extension of the expiration date of the stock options for a 30 trading day period under the Company Share Trading Policy."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Fully vested."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Reflects the extension of the expiration date of the stock options for a 30 trading day period under the Company Share Trading Policy."}],"balance_after":3255,"derivative":{"exercise_price":125.74,"underlying":"Ordinary Shares","underlying_shares":3255},"source":{"system":"sec-edgar","filing":"0001628280-26-035335","document":"wk-form4_1778848686.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026035335/wk-form4_1778848686.xml","form_type":"4"}},{"id":777633,"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":"Stock Options","published_at":"2026-05-15T12:38:09.000Z","date":"2026-05-14","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":3255,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reflects the extension of the expiration date of the stock options for a 30 trading day period under the Company Share Trading Policy."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Reflects the extension of the expiration date of the stock options for a 30 trading day period under the Company Share Trading Policy."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Fully vested."}],"balance_after":0,"derivative":{"exercise_price":125.74,"expiration_date":"2026-05-18","underlying":"Ordinary Shares","underlying_shares":3255},"source":{"system":"sec-edgar","filing":"0001628280-26-035335","document":"wk-form4_1778848686.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1060955/000162828026035335/wk-form4_1778848686.xml","form_type":"4"}}]}