ICON Public Limited Company officer Nigel Clerkin filed a Form 144 notice of proposed sale of 1,488 common shares on November 2, 2026, in connection with the vesting of compensatory equity awards.

Key Highlights

  • Proposed sale: 1,488 common shares with an aggregate market value of $307,501.15, according to the filing.
  • Acquisition date: The shares were acquired on October 31, 2026, through restricted stock vesting under a registered plan, with the issuer listed as the party from whom they were acquired.
  • Sell-to-cover purpose: The filing states the shares represent "the number of shares required to be sold to cover tax withholding obligations in connection with the vesting of compensatory equity awards" and are described as "mandated by the applicable award agreement."
  • Broker named: Morgan Stanley Smith Barney LLC Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY 10004, is identified as the broker.
  • Prior sales: Clerkin sold 2,267 common shares on August 11, 2026, for gross proceeds of $372,450.64, according to the three-month sales history disclosed in the filing.
  • Shares outstanding: The filing lists 74,916,724 common shares outstanding at the time of notice.
  • Exchange listed: NASDAQ:ICLR, as identified on the filing.

ICON Officer Clerkin Proposes Tax-Withholding Share Sale Following October 2026 Vest

Nigel Clerkin, identified as an officer of ICON Public Limited Company (NASDAQ:ICLR), submitted a Form 144 notice dated November 2, 2026, disclosing a proposed sale of 1,488 common shares. According to the filing, the shares were acquired on October 31, 2026, through restricted stock vesting under a registered plan, with consideration described as "Services Rendered."

The filing states that the proposed sale is a "sell to cover" transaction and that it does not represent a discretionary trade by Clerkin. Specifically, the remarks section discloses: "Represents the number of shares required to be sold to cover tax withholding obligations in connection with the vesting of compensatory equity awards. These sales are 'sell to cover' transactions mandated by the applicable award agreement to satisfy the applicable tax withholding obligation and do not represent discretionary trades by the reporting person."

In the three-month sales history required by the form, Clerkin reported a prior sale of 2,267 common shares on August 11, 2026, generating gross proceeds of $372,450.64. The approximate date of the proposed new sale is listed as November 2, 2026, with the aggregate market value of the 1,488 shares given as $307,501.15. ICON's issuer address is listed as South County Business Park, Leopardstown, Dublin 18, Ireland.

What Was Disclosed

A Form 144 notice was filed by ICON officer Nigel Clerkin on November 2, 2026, proposing the sale of 1,488 common shares valued at $307,501.15 in aggregate. The filing attributes the sale to tax-withholding requirements tied to a restricted stock vesting event on October 31, 2026.