The most hotly negotiated term (after price) is the liquidation preference. In a Series A deal, it is between the company and the investor. While it’s often an intense negotiation, it’s straightforward because there are only two interests to consider (the founders and the Series A investors). In later stage, the negotiations become even more interesting.
Brad Feld has been an early stage investor and entrepreneur since 1987. He is currently a Managing Director at Foundry Group. Prior to co-founding Foundry Group, he co-founded Mobius Venture Capital and, prior to that, founded Intensity Ventures. Brad is also a co-founder of TechStars.