ICON director plans $876K stock sale Sept. 16

ICON PLC director John Climax filed notice to sell 5,005 shares following option exercises, with an earlier 841-share sale disclosed for the prior three months.

Available on EDGAR 09/16/2026 - 04:10 PM EDT Accepted by SEC EDGAR 09/16/2026 - 04:10 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

ICON PLC (ICLR) director John Climax filed a Form 144 indicating a proposed sale of 5,005 common shares of ICON for an aggregate value of $875,875.00 through Morgan Stanley Smith Barney LLC on September 16, 2026. The shares are to be sold following the exercise of options under a registered plan. The filing also notes a prior sale of 841 shares of common stock on August 11, 2026 for $138,169.82.

Key Figures

Shares proposed for sale: 5,005 shares Aggregate value of proposed sale: $875,875.00 Shares sold in prior 3 months: 841 shares +3 more

6 metrics

Shares proposed for sale 5,005 shares Common stock to be sold by John Climax as of September 16, 2026

Aggregate value of proposed sale $875,875.00 Value associated with the 5,005 ICON common shares in the Form 144

Shares sold in prior 3 months 841 shares Common stock sold on August 11, 2026 by John Climax

Proceeds from prior 3-month sale $138,169.82 Aggregate amount for 841 shares sold on August 11, 2026

Proposed sale date September 16, 2026 Date of the planned sale of 5,005 ICON common shares

Market NASDAQ Listing market for ICON PLC common shares referenced in the notice

Key Terms

Rule 144, Exercise of Options Under a Registered Plan, Form 144

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Exercise of Options Under a Registered Plan financial

"Common | 09/16/2026 | Exercise of Options Under a Registered Plan | Issuer"

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider share sale is disclosed for ICON PLC (ICLR) in this Form 144?

The notice discloses that John Climax, a director of ICON PLC, plans to sell 5,005 common shares of ICON, with an aggregate value of $875,875.00, through Morgan Stanley Smith Barney LLC on September 16, 2026.

How are the ICON PLC (ICLR) shares in this Form 144 being acquired for sale?

The Form 144 states the 5,005 ICON common shares are to be sold upon Exercise of Options Under a Registered Plan, indicating the shares come from option exercises rather than open-market purchases.

Which broker is handling the proposed ICON PLC (ICLR) Form 144 sale?

The proposed sale of 5,005 ICON common shares is listed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, as the broker handling the transaction.

What prior ICON PLC (ICLR) sales by John Climax are reported in the past three months?

The filing reports that John Climax sold 841 common shares of ICON on August 11, 2026 for an aggregate amount of $138,169.82 during the three months preceding the new proposed sale.

On which market are the ICON PLC (ICLR) shares in this Form 144 listed?

The Form 144 notes that the ICON PLC common shares covered by this notice are listed on the NASDAQ market, with the proposed sale of 5,005 shares scheduled for September 16, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001167476
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ICON PUBLIC LIMITED COMPANY
SEC File Number	333-08704
Address of Issuer	South County Business Park Leopardstown Dublin 18 IRELAND D18 X5R3
Phone	353-1-291-2000
Name of Person for Whose Account the Securities are To Be Sold	JOHN CLIMAX
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	5005	875875.00	77154209	09/16/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/16/2026	Exercise of Options Under a Registered Plan	Issuer			5005	09/16/2026	Wire

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
JOHN CLIMAX South County Business Park Leopardstown Dublin 18 L2 D18 X5R3	Common	08/11/2026	841	138169.82

144: Remarks and Signature

Remarks
Date of Notice	09/16/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ John Climax
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)