()
                  
 has been a registered insider at 2 firms since 2015.
                                      
                                  As a Legal Officer at Mersana Therapeutics,  last made a transaction on 1/16/2025.
                              
                                 As a Legal Officer at Momenta Pharmaceuticals, Inc.,  last made a transaction on 7/20/2020.
                              
| 
                              InsiderInsights.com Purchase Scorecard
                             | 
|  |  | 
                              Transaction Date
                             | 
| Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | Time From Purchases
 | Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | 
| -- | -- | -- | -- | -- | 1 Year | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 9 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 6 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 3 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 1 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 1 Week | -- | -- | -- | -- | -- | 
| 
                              InsiderInsights.com Sales Scorecard
                             | 
|  |  | 
                              Transaction Date
                             | 
| Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | Time From Sales
 | Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | 
| 5 | 60% | 32% | -33% | 385 | 1 Year | 5 | 0% | -- | -- | -- | 
| 8 | 50% | 565% | 26% | 1,699 | 9 Month | 8 | 0% | -- | -- | -- | 
| 8 | 88% | -32% | -42% | 177 | 6 Month | 8 | 0% | -- | -- | -- | 
| 8 | 75% | -25% | -36% | 112 | 3 Month | 8 | 0% | -- | -- | -- | 
| 8 | 50% | 13% | 1% | 82 | 1 Month | 8 | 0% | -- | -- | -- | 
| 8 | 25% | 9% | 5% | 82 | 1 Week | 8 | 0% | -- | -- | -- | 
| Scorecards Updated 10/27/2025 03:37 AM EST | Latest Transaction Date: | 1/16/2025 | 
| Average days between Transaction and Entered Dates: | 2 | 
| 
                              InsiderInsights.com Purchase Scorecard
                             | 
|  |  | 
                              Transaction Date
                             | 
| Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | Time From Purchases
 | Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | 
| -- | -- | -- | -- | -- | 1 Year | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 9 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 6 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 3 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 1 Month | -- | -- | -- | -- | -- | 
| -- | -- | -- | -- | -- | 1 Week | -- | -- | -- | -- | -- | 
| 
                              InsiderInsights.com Sales Scorecard
                             | 
|  |  | 
                              Transaction Date
                             | 
| Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | Time From Sales
 | Nq | Hit Rate
 | Mean Return
 | Median Return
 | Range of Returns
 | 
| 3 | 0% | 137% | 140% | 36 | 1 Year | 3 | 0% | -- | -- | -- | 
| 5 | 0% | 83% | 117% | 131 | 9 Month | 5 | 0% | -- | -- | -- | 
| 10 | 30% | 38% | 13% | 131 | 6 Month | 10 | 0% | -- | -- | -- | 
| 13 | 31% | 27% | 11% | 131 | 3 Month | 13 | 0% | -- | -- | -- | 
| 14 | 36% | 5% | 4% | 81 | 1 Month | 14 | 0% | -- | -- | -- | 
| 14 | 21% | 1% | 4% | 32 | 1 Week | 14 | 0% | -- | -- | -- | 
| Scorecards Updated 10/27/2025 03:37 AM EST | Latest Transaction Date: | 7/20/2020 | 
| Average days between Transaction and Entered Dates: | 3 |