Nigel Bernard John Clerkin - 18 Mar 2026 Form 3 Insider Report for ICON PLC (ICLR)

Role
Chief Financial Officer
Signature
/s/ Erina Joan Fox, as Attorney-in-Fact
Issuer symbol
ICLR
Transactions as of
18 Mar 2026
Net transactions value
$0
Form type
3
Filing time
18 Mar 2026, 16:19:42 UTC
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Clerkin Nigel Bernard John Chief Financial Officer C/O ICON PLC, SOUTH COUNTY BUSINESS PARK, LEOPARDSTOWN, DUBLIN, IRELAND /s/ Erina Joan Fox, as Attorney-in-Fact 18 Mar 2026 0002085465

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding ICLR Ordinary Shares 3,855 18 Mar 2026 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding ICLR Restricted Share Units 18 Mar 2026 Ordinary Shares 10,127 Direct F1, F2
holding ICLR Stock Options 18 Mar 2026 Ordinary Shares 9,241 $185.18 Direct F3
holding ICLR Restricted Share Units 18 Mar 2026 Ordinary Shares 5,558 Direct F2, F4
holding ICLR Restricted Share Units 18 Mar 2026 Ordinary Shares 2,755 Direct F2, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These restricted share units were granted on May 22, 2025 and (i) 3,375 restricted share units will vest the date of payment of withholding taxes in 2026, (ii) 3,375 restricted share units will vest on March 6, 2027, and (iii) 3,377 restricted share units will vest on March 6, 2028.
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.
F3 These stock options were granted on March 6, 2025. Of these options, 2,310 vested in 2026, 2,310 vest in each of 2027 and 2028, and 2,311 vest in 2029, in each case on the applicable anniversary of the grant date.
F4 These restricted share units were granted on October 31, 2024 and (i) 2,778 restricted share units will vest on October 31, 2026 and (ii) 2,780 restricted share units will vest on October 31, 2027.
F5 These restricted share units were granted on March 6, 2025 and (i) 918 restricted share units will vest the date of payment of withholding taxes in 2026, (ii) 918 restricted share units will vest on March 6, 2027, and (iii) 919 restricted share units will vest on March 6, 2028.

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. Exhibit 24 - Power of Attorney.