| 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 2017-09-25 Tx date 2017-09-22 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-48,700 -1,000 vol $48.70 each | 5,000 | |
| Filed 2017-04-07 Tx date 2017-04-07 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Restricted Stock Units (RSU's)59 - Exercise for cash | $-39,409.86 -911 vol $43.26 each | 0 | |
| Filed 2017-03-08 Tx date 2017-02-13 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-81,700 -2,000 vol $40.85 each | 6,000 | |
| Filed 2016-09-26 Tx date 2016-09-22 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-46,283 -1,000 vol $46.28 each | 10,000 | |
| Filed 2016-09-26 Tx date 2016-09-22 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-46,500 -1,000 vol $46.50 each | 8,000 | |
| Filed 2016-09-26 Tx date 2016-09-22 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-46,310 -1,000 vol $46.31 each | 9,000 | |
| Filed 2016-09-22 Tx date 2016-09-21 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-46,054.50 -1,000 vol $46.05 each | 11,000 | |
| Filed 2016-09-22 Tx date 2016-09-21 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-13,815 -300 vol $46.05 each | 12,000 | |
| Filed 2016-09-21 Tx date 2016-09-20 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-32,375 -700 vol $46.25 each | 12,300 | |
| Filed 2016-06-23 Tx date 2016-06-23 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-147,000 -3,000 vol $49.00 each | 13,000 | |
| Filed 2016-06-23 Tx date 2016-06-23 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-49,514 -1,000 vol $49.51 each | 16,000 | |
| Filed 2016-06-05 Tx date 2016-06-02 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-49,750 -1,000 vol $49.75 each | 17,000 | |
| Filed 2016-05-25 Tx date 2016-05-24 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares10 - Acquisition or disposition in the public market | $-98,000 -2,000 vol $49.00 each | 18,000 | |
| Filed 2016-05-05 Tx date 2016-05-05 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares51 - Exercise of options | $61,679 +12,000 vol $5.14 each | 12,000 | |
| Filed 2016-05-05 Tx date 2016-05-05 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options51 - Exercise of options | $-48,080 -8,000 vol $6.01 each | 0 | |
| Filed 2016-05-05 Tx date 2016-05-05 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Options51 - Exercise of options | $-61,680 -12,000 vol $5.14 each | 8,000 | |
| Filed 2016-05-05 Tx date 2016-05-05 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Common Shares51 - Exercise of options | $48,080 +8,000 vol $6.01 each | 20,000 | |
| Filed 2016-03-29 Tx date 2016-03-25 | $SJ Stella-Jones Inc. | Ritchie, Glen 
                                7 - Director or Senior Officer of Insider or Subsidiary of Issuer (other than in 4,5,6)
                             
                                
                                
                                
                                    Direct Ownership
                                
                             | Restricted Stock Units (RSU's)59 - Exercise for cash | $-57,601.92 -1,216 vol $47.37 each | 911 |