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The 40% Rule Is Back: What Late-Stage Term Sheets Now Demand

The 40% Rule Is Back: What Late-Stage Term Sheets Now Demand
R
Written by

Rajiv Sankarlall

Founder & Editor

Andreessen Horowitz growth partner David George told founders on March 23, 2026 that the middle path is gone. In an essay published on a16z's site, George argued software companies now have exactly two viable routes: accelerate revenue growth by 10 or more points using AI native products, or rebuild toward true operating margins of 40 percent or higher, ideally 50 percent, including stock based compensation, within 12 to 24 months (a16z). His line, as published: "Grow 10% or earn 40%, no middle path is left."

That is not investor rhetoric detached from deal terms. It is showing up in how late stage financings are actually structured.

The numbers behind the ultimatum

Yanne Capital's "The Down-Round Playbook H2 2026 Edition" puts a figure on the shift: down rounds reached 24 percent of all US growth stage financings in H1 2025, up from a 4 percent baseline in 2021. The firm projects that share stabilizing at 20 to 25 percent of growth stage rounds through 2026 and 2027, and attributes it directly to investors abandoning growth at all costs in favor of demands for clear paths to profitability and sustainable burn.

Four structures account for nearly all of the down rounds Yanne Capital tracked in H1 2025: a clean price reset (38 percent), an insider bridge with a structured convertible (23 percent), a pay to play recapitalization (21 percent), and a new lead led restructuring (18 percent). Founders who land in the clean reset bucket are losing 25 to 35 percent of their common stock in the process, per Yanne Capital.

Not every dataset agrees on direction. Fenwick's Q1 2026 Venture Beacon found the percentage of both early stage and later stage down rounds actually declined entering 2026, even as a record 61 percent of all Q1 2026 venture dollars went to AI companies. Read together, the two reports describe the same market from different angles. Dollars are concentrating hard into fewer, AI labeled deals, while the growth stage financings still working through capital structure repair are the ones absorbing the resets.

Why the bar moved

PitchBook and NVCA's Q2 2026 Venture Monitor shows why investors can afford to be this selective. US startups raised 412.7 billion dollars in H1 2026, AI accounted for 86 percent of all venture dollars, and megadeals of 100 million dollars or more captured 87.5 percent of capital deployed. Three firms, Andreessen Horowitz, Thrive Capital, and Founders Fund, took in 48.1 percent of all VC fund capital raised in H1 2026: a16z closed seven funds worth 14.2 billion dollars, Thrive raised 10 billion across two funds, and Founders Fund raised 10.6 billion across two, per the same PitchBook-NVCA report.

That capital is not being deployed evenly, and it is not being deployed for free. Silicon Valley Bank's State of the Markets report found the AI valuation premium versus non-AI business models reached 222 percent at Series D and later in 2025. It also found 33 percent of all US VC dollars went to the top 1 percent of companies by valuation in 2025, up from 12 percent in 2022, while the bottom 50 percent of companies received just 7 percent.

The same SVB report found AI companies posted worse Series B profit margins than non-AI peers, negative 172 percent versus negative 131 percent, lower revenue per employee at 60,000 dollars versus 89,000 dollars, and higher burn multiples at Series A, 5.0x versus 3.6x. Growth has outrun efficiency, and investors are pricing that gap into new term sheets (Silicon Valley Bank, via SaaStr).

SVB also reported nearly 340 billion dollars flowed into US VC-backed companies in 2025, the second-highest year on record by dollar volume, despite fewer deals closing than in any year this decade. Fewer, bigger, more scrutinized checks is the pattern across every one of these reports, not a coincidence in one.

What to do this week

If your company is not growing 10 or more points faster than plan on the back of an AI native product, run the other number: true operating margin, stock based compensation included, and how far it sits from 40 percent. George's framework gives you 12 to 24 months to close that gap before your next term sheet asks the question for you.

  • Model true operating margin including SBC this week, not at your next board meeting.
  • Check your cap table against Yanne Capital's four down-round structures: a clean price reset costs 25 to 35 percent of common stock, an insider bridge or pay to play round costs less dilution but more control.
  • If you are not in the top 1 percent of valuations or the 86 percent of dollars going to AI-labeled deals, assume your next term sheet tests the 40 percent line, not the growth line.

Knowing which structure your lead is likely to propose, before the term sheet arrives, is the difference between negotiating and accepting one.