Emer Lyons - 22 Oct 2026 Form 4 Insider Report for ICON PLC (ICLR)

Reporting relationship: Chief Accounting Officer
Issuer ticker: ICLR
Reported as of: 22 Oct 2026
Net transaction value: -$49,604
SEC form: 4
Accepted by SEC: 26 Oct 2026, 06:57:03 UTC
Prior SEC filing: 12 Aug 2026
Next SEC filing: 03 Nov 2026
Source filing: View source filing
Reporting owner signature: /s/ Erina Joan Fox, as Attorney-in-Fact

Filing notes and source

Key filing fact

Emer Lyons filed Form 4 for ICON PLC (ICLR) on 26 Oct 2026.

Key facts

This page summarizes Emer Lyons's Form 4 filing for ICON PLC (ICLR).
7 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 26 Oct 2026, 06:57.

Change

Previous filing in this sequence was filed on 12 Aug 2026.
Current net transaction value: -$49,604.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002119302 Primary reporting owner

Lyons Emer

Relationship: Chief Accounting Officer
Address: C/O ICON PLC, SOUTH COUNTY BUSINESS PARK, LEOPARDSTOWN, DUBLIN, IRELAND
Signature: /s/ Erina Joan Fox, as Attorney-in-Fact
Signature date: 26 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ICLR transaction

Ordinary Shares

Options Exercise

Transaction value
Shares: +510
Change %: +68%
Price
Shares after: 1,262
Date: 22 Oct 2026
Ownership: Direct
Footnotes: F1, F2

ICLR transaction

Ordinary Shares

Sale

Transaction value: -$7,583
Shares: -42
Change %: -3.3%
Price: $180.54
Shares after: 1,220
Date: 23 Oct 2026
Ownership: Direct
Footnotes: F3, F4

ICLR transaction

Ordinary Shares

Sale

Transaction value: -$14,693
Shares: -81
Change %: -6.6%
Price: $181.39
Shares after: 1,139
Date: 23 Oct 2026
Ownership: Direct
Footnotes: F3, F5

ICLR transaction

Ordinary Shares

Sale

Transaction value: -$7,839
Shares: -43
Change %: -3.8%
Price: $182.30
Shares after: 1,096
Date: 23 Oct 2026
Ownership: Direct
Footnotes: F3, F6

ICLR transaction

Ordinary Shares

Sale

Transaction value: -$9,538
Shares: -52
Change %: -4.7%
Price: $183.42
Shares after: 1,044
Date: 23 Oct 2026
Ownership: Direct
Footnotes: F3, F7

ICLR transaction

Ordinary Shares

Sale

Transaction value: -$9,952
Shares: -54
Change %: -5.2%
Price: $184.29
Shares after: 990
Date: 23 Oct 2026
Ownership: Direct
Footnotes: F3, F8

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ICLR transaction Derivative

Restricted Share Units

Options Exercise

Transaction value
Shares: -510
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 22 Oct 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 510
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

These restricted stock units were granted on May 22, 2023 and vested in full in one installment on October 22, 2026.

Footnote F2

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.

Footnote F3

The sale reported represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of RSUs. 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.

Footnote F4

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 $179.8800 to $180.8799, 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 set forth in this footnote to this Form 4.

Footnote F5

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 $180.8900 to $181.8899, 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 set forth in this footnote to this Form 4.

Footnote F6

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 $181.8900 to $182.8899, 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 set forth in this footnote to this Form 4.

Footnote F7

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 $182.9400 to $183.9399, 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 set forth in this footnote to this Form 4.

Footnote F8

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 $183.9400 to $184.9399, 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 set forth in this footnote to this Form 4.

SEC remarks

Due to the issuer's status as a foreign private issuer pursuant to Rule 3a12-3(b) under the Securities Exchange Act of 1934 (the "Act"), the reporting person's transactions in the issuer's equity securities are exempt from Sections 16(b) and 16(c) of the Act.