| Date | Issuer | Insider | Transaction | Amount | New Balance ⓘ 
                                    The balance of securities held by registered holder at the time of the transaction. Insiders may direct multiple registered holders and hold multiple security types.
                                 | |
|---|---|---|---|---|---|---|
| Filed 2025-03-05 12:47 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares57 - Exercise of rights | $20,114 +329 vol $61.14 each | 6,801 | |
| Filed 2025-03-05 12:47 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units57 - Exercise of rights | $-31,955 -581 vol $55.00 each | 3,436 | |
| Filed 2025-03-05 12:42 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares57 - Exercise of rights | $10,026 +164 vol $61.14 each | 6,472 | |
| Filed 2025-03-05 12:41 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units57 - Exercise of rights | $-10,817 -290 vol $37.30 each | 4,017 | |
| Filed 2025-03-05 12:34 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares57 - Exercise of rights | $86,696 +1,418 vol $61.14 each | 6,308 | |
| Filed 2025-03-05 12:32 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units57 - Exercise of rights | $-93,585.70 -2,509 vol $37.30 each | 4,307 | |
| Filed 2025-03-05 11:16 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares57 - Exercise of rights | $11,494 +188 vol $61.14 each | 4,890 | |
| Filed 2025-03-05 11:13 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units57 - Exercise of rights | $-10,348.44 -332 vol $31.17 each | 6,816 | |
| Filed 2025-03-05 10:47 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units56 - Grant of rights | +1,980 vol | 7,148 | |
| Filed 2025-03-05 10:46 Tx date 2025-03-03 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Units56 - Grant of rights | +2,970 vol | 2,970 | |
| Filed 2025-03-05 10:43 Tx date 2024-10-07 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Units00 - Opening Balance-Initial SEDI Report | |||
| Filed 2025-01-15 16:30 Tx date 2024-12-31 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares30 - Acquisition or disposition under a purchase/ownership plan | $250.44 +4 vol $62.61 each | 4,702 | |
| Filed 2024-12-18 19:17 Tx date 2024-12-13 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units30 - Acquisition or disposition under a purchase/ownership plan | +5 vol | 5,168 | |
| Filed 2024-12-17 15:55 Tx date 2024-12-13 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units30 - Acquisition or disposition under a purchase/ownership plan | +3 vol | 5,163 | |
| Filed 2024-12-17 15:53 Tx date 2024-12-13 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units30 - Acquisition or disposition under a purchase/ownership plan | +1 vol | 5,160 | |
| Filed 2024-12-17 15:51 Tx date 2024-12-13 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units30 - Acquisition or disposition under a purchase/ownership plan | +1 vol | 5,159 | |
| Filed 2024-11-26 18:42 Tx date 2024-11-25 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-121,755 -1,500 vol $81.17 each | 4,698 | |
| Filed 2024-11-20 16:14 Tx date 2024-11-15 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-150,380 -2,000 vol $75.19 each | 6,198 | |
| Filed 2024-10-17 12:03 Tx date 2024-10-07 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units00 - Opening Balance-Initial SEDI Report | 5,158 | ||
| Filed 2024-10-17 11:58 Tx date 2024-10-07 | $CCO Cameco Corporation | Aitken, Lisa Lorene 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares00 - Opening Balance-Initial SEDI Report | 8,198 |