Slippage occurs when the actual execution price of an investment differs from the expected or agreed-upon price. For angel investors, this typically manifests in two ways: price slippage, where market conditions cause valuations to shift between a deal's proposal and closing, and time slippage, where delays allow market dynamics to change the investment landscape. Understanding slippage is essential for protecting your capital and managing realistic return expectations.
How It Works
In venture deals, slippage commonly happens during the period between initial term sheet negotiation and final closing. A startup might secure term sheet approval at a $10M valuation, but if closing takes three months and the company misses key milestones or market conditions deteriorate, investors may demand a lower valuation at signing. Alternatively, slippage can occur in secondary market transactions where price quotes aren't guaranteed and execution happens at worse prices than anticipated. The severity depends on market volatility, deal complexity, and how quickly all parties can close.
Why It Matters for Investors
Slippage directly impacts your effective entry price and expected returns. A 10-15% valuation slip on a $5M investment reduces your ownership stake and compounds over time. Beyond financial impact, slippage signals operational risk—if a startup can't close on agreed terms, what does that say about management's ability to execute? Smart investors build slippage assumptions into their models and use closing velocity as a due diligence indicator. It's also why many experienced angels negotiate tighter closing timelines and include anti-dilution protections in their term sheets.
Example
You commit to a Series A round at $8M pre-money valuation for a SaaS company. The term sheet is signed, but legal review reveals IP complications that take two months to resolve. During this time, the company fails to hit its quarterly revenue target. When you finally close, the lead investor renegotiates down to $6.5M pre-money—that's 19% slippage. Your $500K investment now buys you a smaller equity percentage than originally expected, directly reducing your upside potential.
Key Takeaways
- Slippage is the gap between expected and actual investment prices, caused by timing delays or market changes
- Price slippage in venture deals often signals execution risk or changing market conditions
- Build slippage assumptions (5-10%) into financial models and closing timelines
- Negotiate faster closings and include protective provisions like anti-dilution clauses to minimize exposure