How can I get an equity-based loan without social security number (SSN)?

Here is my situation: I own 10% of a well funded US marketing company for environmental products (~$1.5 million invested, plus ~$100k/ month). I may still be several months until I can actually draw profits and need a loan to bridge this time. Problem is I have neither a visa, nor an SSN and would much prefer to do it without co-signer, with my equity interest as collateral - does anyone know where I may be able to get a loan on this basis? Thank you so much in advance for your help!