Possible Scam

CAPPELLA_2

I received a phone call from a company called Corporate Finance Solutions Inc re some ARM shares which I sold before a takeover by a Japanese Co. about 5 years ago, suggesting that the deal could have been fraudulent and between the lines hinting I might be in for a payout.  They subsequently sent the attached e mail followed by another phone call. I’m guessing it’s a scam but noticed another takeover of ARM by an American Co last year and wondered if that was connected.

eskbanker

Looks dodgy to me but, first things first, you might wish to do a better job of redacting your scans, it's quite straightforward to see your name through the partial masking, and your completely unmasked home phone number....

HansOndabush

If you sold your shares and received the funds then you aren't due anything anyway.

Eyeful

A cold call to help with an investment you have already sold.
Appealing to a persons greed.
An Email and a follow up call. 
A non- disclosure agreement, so you do not talk or tell anyone about it.
A domain less than 6 months old.
https://www.scamdoc.com/view/520009
https://www.scamadviser.com/check-website/corporatefinancesolutionsinc.com
All classic hallmarks of a scam. I believe your " guessing it’s a scam" is correct.

cymruchris

Agree with the above - now edit your post to remove your personal details from those screen captures. @Capella_2

poppy10_2

Definite scam.
https://www.fca.org.uk/news/warnings/corporate-finance-solutions-inc

Also a cursory look at their website which is full of broken English and bizarre inflated claims is enough to tell you to run a mile