Study of S1 filings of 79 public tech firms shows median level of founder ownership at exit was 11%, while median level of VC ownership at exit was 62%
Founders are always concerned with their level of equity ownership and the potential dilution from a new round, and rightly so.
Context & Ripple Effects
Blossom Street Ventures put hard numbers on the dilution anxiety every founder carries into a raise: across 79 public tech companies' S1 filings, the median founder held just 11% of the company at exit, while the median VC position was 62%. The study lands amid a running argument about who actually captures startup value.
The surrounding coverage shows both sides of that argument sharpening. Weeks later, a survey of 700+ founders found 31% no longer intend to IPO and 67% say VCs hold more negotiating power (TechCrunch's founder survey), and First Round's follow-up showed investors' perceived sway climbing from 39% to 53% of deals (First Round's hiring-and-power survey). By 2018, the Wall Street Journal reported the counter-move: tech founders wresting control back through outsized going-public pay packages (founders extracting control at IPO).
First-order effects
- Founders negotiating new rounds now have a concrete benchmark — median 11% founder ownership at exit versus 62% for VCs — that makes dilution asks from investors easier to price and resist.
- Venture firms gain a data-backed answer to founders who push back on ownership stakes: the median outcome across 79 public exits shows funds, not founders, holding the majority of value.
Second-order effects
- The numbers feed directly into the negotiating-power shift founders themselves report — 67% saying VCs hold more leverage, and 31% saying they would rather not IPO at all than dilute toward that 11% median.
- Equity-distribution research extends the same ownership lens beyond the founder-VC split: women are 13% of founders but hold only 7% of founder equity (Axios's 10K-startup equity study), so any dilution benchmark compounds unevenly across founder groups.
Third-order effects
- If founders treat an 11% median exit stake as unacceptable, the structural response is what the WSJ documented by 2018: control mechanisms and large pre-IPO pay packages that decouple founder influence from equity percentage.
- Sustained dilution pressure pushes value creation away from the public-market exit itself — fewer IPOs, longer private stays, and exit economics increasingly negotiated in private rounds rather than settled at listing.
The trend: Startup ownership is becoming an explicitly contested bargain, with hard exit-data benchmarks like this one arming founders against the dilution that historically left VCs holding most of the value.