Hi Eugene, thanks for reaching out. For this specific use case, I suggest that you use Clay's Chrome extensions. Here's where you can get the extension. Specifically, you should deploy the chrome extension on their portfolio companies website: https://octopusventures.com/portfolio/
You can use the extension on any list you find, which you may want to import to clay, when browsing the internet. Here's a videoshowing you how you can build Clay tables using the extension.
I hope this was helpful. If there's anything else I can assist you with, please let me know!