If you're willing to do a bit more research, what I've done in the above code is extract all the unique values in Column E using the AdvancedFilter and temporarily placing them in Column M. These unique values are then placed into an array(ar) which is then looped through and filtered for each unique value. This prevents many, many iterations which in turn speeds up the code and, as you stated earlier, you have around 100K rows of data so the saved iterations would be in the thousands. I tested this code on 150K rows and it took about three seconds to execute on my machine.
Column M is cleared at the end of code execution.
As you can see in the code, I've used 'IF' statements to identify the unique values for processing once filtered. You may want to research 'case statements in VBA' if you have the time. 'Case statements' can be used in place of 'IF' statements and may actually work more quickly.
Anyway, once again "well done" and good luck with your project.
Thank you very much. I will be reading about case statements and also "ubound" tonight and then adjust the code accordingly.
THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!