There are all kinds of way out of this in case he would get sued: he could say that with 'there is no risk', he just meant shorthand for 'there is no more than a negligible risk'. Or he could say that with 'there is no risk' he was merely expressing his strong personal opinion based on the vision and faith he had in his company.
Officers of a company are held to a different standard when it comes to public statement.
Declaring it as personal opinion would not likely absolve him. 'Funding Secured' was also a personal believe, from the SEC standard it had to be substantiated in a meaningful way though, or gets fined.
