| 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 2020-03-31 17:50 Tx date 2020-03-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Unit (RSU)22 - Acquisition or disposition pursuant to a take-over bid, merger or acquisition | -3,987 vol | 0 | |
| Filed 2020-03-31 17:49 Tx date 2020-03-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Unit (PSU)22 - Acquisition or disposition pursuant to a take-over bid, merger or acquisition | -3,987 vol | 0 | |
| Filed 2020-03-31 17:49 Tx date 2020-03-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options22 - Acquisition or disposition pursuant to a take-over bid, merger or acquisition | -16,450 vol | 0 | |
| Filed 2020-03-31 17:48 Tx date 2020-03-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares22 - Acquisition or disposition pursuant to a take-over bid, merger or acquisition | -1,662 vol | 0 | |
| Filed 2020-03-24 12:51 Tx date 2019-12-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares30 - Acquisition or disposition under a purchase/ownership plan | $23,479 +1,137 vol $20.65 each | 1,662 | |
| Filed 2020-03-24 12:49 Tx date 2019-12-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Unit (PSU)30 - Acquisition or disposition under a purchase/ownership plan | +133 vol | 3,987 | |
| Filed 2020-03-24 12:49 Tx date 2019-12-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Unit (RSU)30 - Acquisition or disposition under a purchase/ownership plan | +133 vol | 3,987 | |
| Filed 2019-05-21 12:37 Tx date 2019-05-17 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $215,118 +10,200 vol $21.09 each | 16,450 | |
| Filed 2019-05-21 12:36 Tx date 2019-05-17 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Unit (PSU)56 - Grant of rights | +2,130 vol | 3,854 | |
| Filed 2019-05-21 12:35 Tx date 2019-05-17 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Unit (RSU)56 - Grant of rights | +2,130 vol | 3,854 | |
| Filed 2019-03-05 Tx date 2018-12-31 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares30 - Acquisition or disposition under a purchase/ownership plan | $3,943 +262 vol $15.05 each | 525 | |
| Filed 2019-01-10 Tx date 2019-01-04 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $101,000 +6,250 vol $16.16 each | ||
| Filed 2019-01-10 Tx date 2019-01-04 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $98,312 +6,250 vol $15.73 each | 6,250 | |
| Filed 2019-01-09 Tx date 2019-01-04 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Unit (RSU)56 - Grant of rights | +1,724 vol | 1,724 | |
| Filed 2019-01-09 Tx date 2019-01-04 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Unit (PSU)56 - Grant of rights | +1,724 vol | 1,724 | |
| Filed 2019-01-09 Tx date 2019-01-01 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options00 - Opening Balance-Initial SEDI Report | |||
| Filed 2019-01-09 Tx date 2019-01-04 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options50 - Grant of options | $101,000 +6,250 vol $16.16 each | 6,250 | |
| Filed 2019-01-09 Tx date 2019-01-01 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Performance Share Unit (PSU)00 - Opening Balance-Initial SEDI Report | |||
| Filed 2019-01-09 Tx date 2019-01-01 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Rights Restricted Share Unit (RSU)00 - Opening Balance-Initial SEDI Report | |||
| Filed 2019-01-07 Tx date 2019-01-01 | $ACI AltaGas Canada Inc. | Lowther, Mark Steven Douglas 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares00 - Opening Balance-Initial SEDI Report | 263 |