[144] Cameco Corporation SEC Filing

Rhea-AI Filing Summary

Cameco Corporation (CCJ) notice: an individual intends to sell 500 common shares on the NYSE through Solium Financial on 09/10/2025 for an aggregate market value of $39,735. The shares were acquired from long‑term incentive vesting in 2018–2019 (129, 184, and 187 shares on specific vesting dates) with cash payment at acquisition. The filer reports no securities sold in the past three months and affirms they are not aware of any undisclosed material adverse information about the issuer. This form is a Rule 144 notice of proposed sale and documents the planned transaction and acquisition history.

Insights

Securities Analyst

TL;DR: Insider intends to sell a very small block of shares; transaction appears routine and non‑material.

The filing documents a proposed sale of 500 Cameco common shares with an aggregate market value of $39,735, to be executed through Solium Financial on the NYSE. Acquisition records show the shares resulted from vested long‑term incentive awards in 2018–2019 and were paid in cash at vesting. There were no other sales in the prior three months. From a market‑impact perspective, the size of the proposed sale is negligible relative to the 435,387,448 shares outstanding reported here, suggesting limited valuation impact. The notice also contains the standard attestation regarding absence of undisclosed material adverse information.

Corporate Governance Expert

TL;DR: Form 144 is a compliance disclosure for an insider sale; documentation appears complete for Rule 144 purposes.

The form lists the broker, number of shares, aggregate value, planned sale date, and detailed acquisition history, which are key elements required under Rule 144. The filer states no material nonpublic information is known and discloses that no related sales occurred in the last three months. For governance review, the filing meets the basic transparency standards for an insider sale notice and records that the shares stem from vested LTI awards rather than a gift or transfer.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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 Shares	Solium Financial Inc. 1500, 800 - 6th Avenue SW Calgary A0 T2P 3G3	500	39735.00	435387448	09/10/2025	NYSE

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 Shares	03/01/2018	Shares acquired as of vesting of LTI award	Open Market Purchase			129	03/01/2018	Cash
Common Shares	03/02/2018	Shares acquired as of vesting of LTI award	Open Market Purchase			184	03/02/2018	Cash
Common Shares	03/01/2019	Shares acquired as of vesting of LTI award	Open Market Purchase			187	03/01/2019	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)