With the post-engagement search, you can scrape the people from LinkedIn who interacted on your or somebody else's post.
Keep in mind that only 2500 people will be imported into your account at once.
To create the search, please follow the steps below, Part 1:
Go to LinkedIn
Click on your profile icon in the top right corner
Click on Posts & Activity
Click on Posts
Click on the three dots in the upper right corner of your post
Click on Copy link to post
Go to Expandi, and press on Search on the sidebar menu
Create a New search
Select Post-engagement search from the list and create a name for it
Paste the URL that you copied from LinkedIn
Copy the ID of your post on LinkedIn
Paste the ID
Complete the action
In order to use the Post engagement search tool, you first need to go to LinkedIn. You should decide if you want to use your own post or someone else’s post.
If you want to use your own post, you should click on your profile icon in the upper right corner. There, in the falling menu, you should click on Posts & Activity.
When you click on Posts & Activity, it will lead you to a page will all your activity. Click on posts. Then go to the article you want to use. Click on the three dots in the upper right corner of the post. Then click on Copy link to post.
After you have copied the link, go to Expandi. Go to the Search menu and create a New Search.
After you create a new post, choose a name for it (1.), then click on Post Engagement (2.), paste the URL to the post you copied from LinkedIn (3). The last step is to copy the post ID from the URL and paste it in the last field (4.). Click on Apply (5.).