Here are 3 different ideas for you to check out. There are a few ideas we're trying to push with these designs. First is the literal idea of a gray fin, with some being more obvious than others. Secondly, we're trying to communicate GrayFin as a contemporary (modern) and professional company. I've included "Sollutions, LLC" on all designs just to see how we can lay it out, but we don't necessarily need to always include it with the logo mark. Also you'll see that we have come up with a couple companion icons to go along with the logos.
As was before, you'll also notice that all the design are in grayscale. In this first round of designs, we want to focus on the core of the logo and decide what stands out the best without a color determining what you like and don't like. As you can see almost all designs can be simplified down to a single color without losing it's bold appearance.