Investor Advice with Keith Winter

What makes a founder worth backing, and does being open to advice mean following it? Keith Winter brings an operator’s perspective to those questions. Now a Partner at healthcare technology investment firm Teal Ventures, he previously held senior leadership roles across technology companies and built a career spanning corporate development, acquisitions and startup operations.

In this edition of Investor Advice, Keith explains why active listening matters more to him than simply being “coachable,” how AI is changing the way startups build teams, and what revising an investor presentation more than 60 times taught him about fundraising. His perspective offers founders a practical challenge: stay committed to your vision while remaining willing to improve how you pursue it.

Tell us more about yourself. 

Keith: I began my career in corporate development, working for HP, KPMG, and Disney. I later transitioned into operational leadership, holding six C-level positions at various Silicon Valley startups. In these roles, I managed teams of up to 500 people, raised capital, and gained extensive hands-on operating experience. I also had both exits and failures, each of which taught me valuable lessons. 

Along the way, I earned an MBA in Finance, an MS in Data Analytics, and an MPH in Informatics. This combination of corporate development, operational leadership, and academic experience provided a strong foundation for my transition into investing. 

How did you get into the investment sector? 

Keith: I've always had an interest in investing and have been active in the public markets for many years. My interest eventually expanded to private markets, which led me to join Inspovation, a Silicon Valley angel investment group. Through Inspovation, I gained substantial experience in early-stage investing and the group had several successful exits, including acquisitions by Apple, and Google. 

More recently, I became a partner at Teal Ventures, a San Diego-based venture capital firm focused on healthcare technology. I have also remained active as an angel investor and serve on the boards of two large angel investment groups, NuFund Ventures and Health Innovation Pitch (HIP). In addition, I participate in angel syndication networks, including Medical Mondays and the Angel Syndication Network. 

What is the most interesting aspect of your job? 

Keith: What I enjoy most is the variety of companies, technologies, and people I encounter. Every investment opportunity presents something new to learn, whether it's an emerging technology, a different business model, or a unique approach to solving a problem. 

For me, the most interesting aspect of investing is the opportunity for continuous learning. 

Have you observed any trends in recent years regarding the direction startups are taking? 

Keith: I've noticed two significant trends. 

First, many startups are extending their existing convertible notes or SAFEs rather than pursuing a traditional Series A financing round. This is largely because raising a Series A has become more challenging, and companies are looking for ways to extend their runway while continuing to demonstrate progress. 

Second, we are beginning to see startups use artificial intelligence to operate with smaller teams. AI is allowing companies to automate certain functions and accomplish more with fewer employees. I expect this trend to become increasingly common as AI capabilities continue to improve. 

What are the top three traits that make startups more appealing to investors? 

Keith: I tend to focus heavily on the founders when evaluating an investment opportunity. Three qualities stand out to me: active listening, passion, and persistence. 

Many investors emphasize coachability, but I'm not convinced that's necessarily the most important trait. I place greater value on a founder's ability to listen actively and thoughtfully consider different perspectives. 

Good founders don't always need to follow the advice they receive, but they should be willing to hear it and evaluate its merits. Having been an operator myself, I know that even well-intentioned advice can come from someone with limited visibility into the business. Founders are immersed in their companies every day and often have access to information and context that outside advisors or investors don't. As a result, the right decision may differ from the advice they've been given. 

Beyond active listening, I look for founders who are passionate about what they're building and relentless in their pursuit of success. Startups inevitably encounter obstacles, and the ability to remain committed, adapt, and persevere through setbacks is essential. 

What advice would you give startups trying to navigate the current environment and present themselves to investors? 

Keith: My advice is to remain open to feedback, different perspectives, and the possibility of changing direction when circumstances warrant it. Founders need to be confident in their vision while remaining flexible enough to adapt as they learn more about their market, customers, and business. 

I also believe strongly in constant iteration and improvement. For example, when I was CEO of a company raising capital, we revised our investor presentation more than 60 times before we felt we had effectively addressed what prospective investors wanted to see. Each conversation provided new insights that helped us refine our message and better communicate the opportunity. That experience reinforced an important lesson: successful startups don't get everything right the first time. They continually learn, adjust, and improve. Continuous improvement should be part of a startup's daily operating philosophy. 

Keith’s advice asks founders to balance conviction with curiosity. Listen carefully, weigh the context behind each recommendation, and be prepared to change direction when the evidence calls for it. His experience revising a pitch more than 60 times makes that approach tangible: every investor conversation can become an opportunity to sharpen the story and strengthen the business.

For founders preparing their next raise, the takeaway is practical: bring passion and persistence, but also show how you learn. A compelling pitch explains the opportunity; the way a team responds to questions reveals how it might navigate the challenges ahead.

Learn more about Keith Winter through his Teal Ventures profile or connect with him on LinkedIn.