| 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 2021-08-24 18:10 Tx date 2021-08-20 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Units97 - Other | $-273,177.08 -13,618 vol $20.06 each | 0 | |
| Filed 2021-08-24 18:09 Tx date 2021-08-20 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units97 - Other | $-524,087.56 -26,126 vol $20.06 each | 0 | |
| Filed 2021-08-24 18:05 Tx date 2021-08-20 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units57 - Exercise of rights | $-197,385.768 -9,897 vol $19.94 each | 26,126 | |
| Filed 2021-03-03 13:05 Tx date 2021-02-26 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Units56 - Grant of rights | +13,618 vol | 13,618 | |
| Filed 2021-03-03 13:05 Tx date 2021-02-26 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units56 - Grant of rights | +13,618 vol | 36,023 | |
| Filed 2021-01-04 12:22 Tx date 2020-12-31 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units57 - Exercise of rights | $-44,055.936 -3,664 vol $12.02 each | 22,405 | |
| Filed 2020-11-06 14:14 Tx date 2020-11-01 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Units00 - Opening Balance-Initial SEDI Report | |||
| Filed 2020-11-06 12:51 Tx date 2020-11-01 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Units00 - Opening Balance-Initial SEDI Report | 26,069 | ||
| Filed 2020-11-05 13:38 Tx date 2020-11-01 | $IPL Inter Pipeline Ltd. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares00 - Opening Balance-Initial SEDI Report | |||
| Filed 2018-04-05 Tx date 2018-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $818.92 +118 vol $6.94 each | 56,895 | |
| Filed 2018-04-05 Tx date 2018-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $333.12 +48 vol $6.94 each | 26,845 | |
| Filed 2018-04-05 Tx date 2018-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $409.46 +59 vol $6.94 each | 26,797 | |
| Filed 2018-04-05 Tx date 2018-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $319.24 +46 vol $6.94 each | 26,738 | |
| Filed 2018-04-05 Tx date 2018-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $735.64 +106 vol $6.94 each | 57,001 | |
| Filed 2018-04-05 Tx date 2018-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $707.88 +102 vol $6.94 each | 56,777 | |
| Filed 2018-01-09 Tx date 2017-07-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $401.28 +48 vol $8.36 each | 24,477 | |
| Filed 2018-01-09 Tx date 2017-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $480.69 +63 vol $7.63 each | 50,350 | |
| Filed 2018-01-09 Tx date 2017-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $801.15 +105 vol $7.63 each | 50,455 | |
| Filed 2018-01-09 Tx date 2017-07-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $484.88 +58 vol $8.36 each | 50,513 | |
| Filed 2018-01-09 Tx date 2017-07-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $802.56 +96 vol $8.36 each | 50,609 | |
| Filed 2018-01-09 Tx date 2017-07-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $727.32 +87 vol $8.36 each | 50,696 | |
| Filed 2018-01-09 Tx date 2017-10-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $488.40 +66 vol $7.40 each | 50,762 | |
| Filed 2018-01-09 Tx date 2017-10-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $806.60 +109 vol $7.40 each | 50,871 | |
| Filed 2018-01-09 Tx date 2017-10-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $732.60 +99 vol $7.40 each | 50,970 | |
| Filed 2018-01-09 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $490.38 +66 vol $7.43 each | 56,467 | |
| Filed 2018-01-09 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $809.87 +109 vol $7.43 each | 56,576 | |
| Filed 2018-01-09 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $735.57 +99 vol $7.43 each | 56,675 | |
| Filed 2018-01-09 Tx date 2017-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $244.16 +32 vol $7.63 each | 24,348 | |
| Filed 2018-01-09 Tx date 2017-04-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $396.76 +52 vol $7.63 each | 24,400 | |
| Filed 2018-01-09 Tx date 2017-07-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $242.44 +29 vol $8.36 each | 24,429 | |
| Filed 2018-01-09 Tx date 2017-07-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $334.40 +40 vol $8.36 each | 24,517 | |
| Filed 2018-01-09 Tx date 2017-10-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $244.20 +33 vol $7.40 each | ||
| Filed 2018-01-09 Tx date 2017-10-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $236.80 +32 vol $7.40 each | 24,549 | |
| Filed 2018-01-09 Tx date 2017-10-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $407.00 +55 vol $7.40 each | 24,604 | |
| Filed 2018-01-09 Tx date 2017-10-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $333.00 +45 vol $7.40 each | 24,649 | |
| Filed 2018-01-09 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $245.19 +33 vol $7.43 each | 26,593 | |
| Filed 2018-01-09 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $401.22 +54 vol $7.43 each | 26,647 | |
| Filed 2018-01-09 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $334.35 +45 vol $7.43 each | 26,692 | |
| Filed 2018-01-04 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $200,203 +26,873 vol $7.45 each | 56,418 | |
| Filed 2018-01-04 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)56 - Grant of rights | $131,999 +17,718 vol $7.45 each | 68,005 | |
| Filed 2018-01-04 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)58 - Expiration of rights | -12,287 vol | 55,718 | |
| Filed 2018-01-04 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)59 - Exercise for cash | $-45,765.35 -6,143 vol $7.45 each | 26,227 | |
| Filed 2018-01-04 Tx date 2018-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)56 - Grant of rights | $60,002 +8,054 vol $7.45 each | 32,370 | |
| Filed 2017-05-12 Tx date 2017-03-07 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $214,201 +29,545 vol $7.25 each | 29,545 | |
| Filed 2017-05-12 Tx date 2017-03-07 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $212,428 +29,545 vol $7.19 each | ||
| Filed 2017-03-31 Tx date 2017-01-31 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)30 - Acquisition or disposition under a purchase/ownership plan | $-36,993.97 -4,979 vol $7.43 each | 16,040 | |
| Filed 2017-03-31 Tx date 2017-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)35 - Stock dividend | $3,348 +516 vol $6.49 each | 21,019 | |
| Filed 2017-03-31 Tx date 2017-03-07 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)30 - Acquisition or disposition under a purchase/ownership plan | $132,000 +18,207 vol $7.25 each | 50,287 | |
| Filed 2017-03-31 Tx date 2017-02-28 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)30 - Acquisition or disposition under a purchase/ownership plan | $-74,077.10 -9,970 vol $7.43 each | 32,080 | |
| Filed 2017-03-31 Tx date 2017-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)35 - Stock dividend | $6,704 +1,033 vol $6.49 each | 42,050 | |
| Filed 2017-03-31 Tx date 2012-01-15 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options00 - Opening Balance-Initial SEDI Report | |||
| Filed 2017-03-31 Tx date 2017-03-07 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $212,428 +29,545 vol $7.19 each | 29,545 | |
| Filed 2017-03-31 Tx date 2017-03-07 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)30 - Acquisition or disposition under a purchase/ownership plan | $60,001 +8,276 vol $7.25 each | 24,316 | |
| Filed 2016-11-02 Tx date 2016-10-26 | $RNW TransAlta Renewables Inc. | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares00 - Opening Balance-Initial SEDI Report | |||
| Filed 2016-03-29 Tx date 2016-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)35 - Stock dividend | $13,470 +1,581 vol $8.52 each | 15,427 | |
| Filed 2016-03-29 Tx date 2016-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)30 - Acquisition or disposition under a purchase/ownership plan | $48,000 +9,776 vol $4.91 each | 20,503 | |
| Filed 2016-03-29 Tx date 2016-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | RSU (Restricted Share Units)30 - Acquisition or disposition under a purchase/ownership plan | $-23,077 -4,700 vol $4.91 each | 10,727 | |
| Filed 2016-03-29 Tx date 2016-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)30 - Acquisition or disposition under a purchase/ownership plan | $96,000 +19,552 vol $4.91 each | 41,017 | |
| Filed 2016-03-29 Tx date 2016-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)30 - Acquisition or disposition under a purchase/ownership plan | -9,413 vol | 21,465 | |
| Filed 2016-03-29 Tx date 2016-01-01 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | PSU (Performance Share Units)35 - Stock dividend | $26,957 +3,164 vol $8.52 each | 30,878 | |
| Filed 2015-12-09 Tx date 2015-12-09 | $TA TransAlta Corporation | Chakravarti, Nipa 
                                5 - Senior Officer of Issuer
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $4,752 +1,100 vol $4.32 each | 1,100 |