Angel Investing: The Gust Guide to Making Money and Having Fun Investing in Startups

By David S. Rose

Quick Summary

A comprehensive guide to angel investing by David Rose, founder of Gust (the global platform for startup funding). Covers the full lifecycle from sourcing deals and evaluating entrepreneurs, through due diligence, valuation, term sheets, and closing, to post-investment portfolio management and exits, with a focus on the portfolio theory that every angel needs at least 20 investments.

Executive Summary

David Rose, one of the world's most active angel investors and founder of the Gust platform, provides the definitive practical guide to angel investing. The book demystifies the asset class, explaining who can be an angel, the portfolio approach required for success, how to source and evaluate deals, and how to structure investments. Rose's central message is that angel investing can generate 25% annual returns -- but only for those who invest in enough companies (at least 20), conduct proper due diligence, and actively manage their portfolios.

Core Thesis

Angel investing is a numbers game that requires portfolio diversification to succeed. Most startups fail, no one can reliably predict which ones will succeed, and follow-on investment is almost always necessary. But for investors who understand these truths and build diversified portfolios with disciplined processes, the asset class can be both financially rewarding and personally fulfilling.

Key Truths of Angel Investing

1. Most startups fail
2. No one knows which startups will not fail
3. Investing in startups is a numbers game
4. What goes up usually went down first
5. All companies always need more money
6. If you understand truths 1-5, angel investing can be very lucrative

Key Content Areas

Evaluating Entrepreneurs

"Bet the jockey, not the horse" -- the quality of the founding team is the most important factor. Covers what makes great entrepreneurs, warning signs of weak founders, and the significance of domain expertise, persistence, and coachability.

Due Diligence and Deal Leading

Practical guidance on leading investment rounds, coordinating due diligence across angel groups, and the responsibilities of lead investors.

Valuations and Deal Structure

Explains the four simple numbers of investment math, common stock vs. preferred stock vs. convertible notes, and how initial valuations affect ultimate returns. Includes detailed discussion of discounted convertible notes and their fine points.

Post-Investment Management

Monitoring portfolio companies, making follow-on investments, serving on boards, and adding value as an active angel.

The Ecosystem

Maps the entire startup financing landscape: accelerators, venture funds, crowdfunding platforms, government grants, and how angels fit into the broader picture.

Critical Assessment

Strengths

• Written by one of the most experienced and credible angel investors globally
• Extremely practical with checklists, term sheet templates, and worksheets in appendices
• Honest about the risks and failure rates
• Covers the full lifecycle from first meeting to exit

Limitations

• Primarily U.S.-focused, though international appendices help
• The 25% return claim requires significant capital and diversification that may not be accessible to all accredited investors
• Some discussion of crowdfunding regulations may be outdated as laws evolve
• Limited treatment of later-stage investing or secondary markets

Conclusion

David Rose has produced the most authoritative and practical guide to angel investing available. It is essential reading for anyone considering investing in early-stage companies, providing the frameworks, tools, and candid risk assessment necessary for informed participation in this increasingly accessible asset class.