"So, with what you provided, how could you be sure there had been no filing?" Because this isn't the first time I'm doing this.
"Those links, by the way, only list through Feb., 2011." That's because that was the last time there was a filing.
"Knowing how slow GRNO is and has been to file, a filing for 2010 could have been made after that." No, it couldn't. The link provided reflects all the filings that the company has made between 7/29/96 and today.
Per their correspondence, the SEC isn't interested in unaudited 10-k's. However, the company could provide them to otcmarkets.com...they just wouldn't be SEC compliant.