Verified primary phone number as a land line in Chicago, Illinios.
The only Mark Thomann I could find is a 44 year old married resident of Chicago (with a fairly expensive home) who works for River West Btands LLC.
The address of West River Brands does not correspond to the address you were given so this may not be your man. So your Mark Thomann may be a individual with a lower public profile.
I can verify that the address you've been given does belong to Pluritas.
And, if I'm not mistaken, these were the people that were assisting AInc in the marketing of their assets.
However, as Pluritas' phone number begins with a different area code (than your phone number starts with) this combination of address and phone numbers seems unlike.
There is still over 4 hours of April 4th left in Chicago, so this very well could be a well thought out prank.
However, I would advise against talking to him directly, especially about Amiga.
I suggest that anything you do with this individual be in writing.
Cheers Iggy...

Done a bit of checking myself before posting or emailing the numptie, he joined the site two days ago and emailed his rubbish April fool stuff tonight...
He did email from "riverwestbrands.com" and all the names, phone no's and addresses were genuine but I saw through it straight away hence the daft replies...

He's not been back in touch since, pity though, I was enjoying replying to him to see what he would come up with next...

Mind you I did ban him from the site just in case he was some useless lawyer that couldn't even spell the word "discuss"... :lol:
Hopefully he'll come up with something better next time or if he is a real lawyer he'd better start looking for a decent one for himself... :roflmao: