Grubstakes | 445 followers on LinkedIn. Seattle network of angel investors supporting startups in the PNW. | Grubstake |ˈɡrəbstāk| During the Gold Rush this was the term used to describe the materials, provisions or money supplied to gold prospectors in return for a share in the resulting profits. We are an informal network of angel investors based in Seattle that find, fund and mentor startups in the Pacific Northwest. Our defining characteristic is our collaborative spirit.