[144] CAMECO CORP SEC Filing

Rhea-AI Filing Summary

Cameco Corporation (CCJ) filed a Form 144 disclosing a proposed sale of 19,460 common shares with an aggregate market value of $1,680,000. The filing shows the shares represent part of the issuer's outstanding common stock of 435,387,448 shares and names the intended sale date as 09/15/2025 on the NYSE. The shares were acquired on 09/15/2025 through a stock option exercise from Cameco Corporation and payment was in cash. The filer reports no securities sold during the past three months and includes the standard attestation that the seller is not aware of undisclosed material adverse information.

Positive

• Full disclosure provided: Form 144 includes quantity, value, acquisition method, broker, and planned sale date
• Acquisition and sale are documented: Shares acquired via stock option exercise and payment was in cash
• No sales in prior three months: filer reports "Nothing to Report" for securities sold during past 3 months

Negative

• None.

Insights

Securities Analyst

TL;DR: Routine insider sale disclosure: small position vs. market cap, no prior sales reported, likely neutral to market liquidity.

The Form 144 documents a planned sale of 19,460 shares valued at $1.68 million to be executed on the NYSE on 09/15/2025. The shares were acquired by exercise of stock options on the same date and paid for in cash. The filing states there were no sales by the reporting person in the prior three months and includes the standard representation about absence of undisclosed material adverse information. Given the size of the outstanding share count (435,387,448), this disclosure appears routine and does not by itself indicate material corporate change.

Corporate Governance Expert

TL;DR: Compliance-focused disclosure showing required transparency for an insider sale; procedural, not a governance warning.

The submission fulfills Rule 144 notice requirements by identifying the class, broker, quantity, aggregate value, acquisition method, and payment terms. Acquisition via stock option exercise and immediate planned sale are explicitly stated. The filing includes the mandatory attestation and signature notice regarding material information. There are no indications of unusual restrictions, non-cash consideration, or aggregated recent sales that would raise governance concerns.

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	19460	1680000.00	435387448	09/15/2025	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	09/15/2025	Stock Option Exercise	Cameco Corporation			19460	09/15/2025	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)

FAQ

What did Cameco (CCJ) disclose in this Form 144?

Answer: A proposed sale of 19,460 common shares valued at $1,680,000, to be sold on 09/15/2025 on the NYSE.

How were the shares acquired according to the filing?

Answer: The filing states the shares were acquired on 09/15/2025 by stock option exercise from Cameco Corporation with cash payment.

Does the filing report any securities sold by the filer in the past three months?

Answer: The Form 144 lists "Nothing to Report" for securities sold during the past three months.

What broker is named for the proposed sale?

Answer: The broker is listed as Solium Financial Inc., 1500, 800 - 6th Avenue SW Calgary.

How large is the issuer's outstanding share count per the filing?

Answer: The filing shows 435,387,448 shares outstanding.