Carta vs Forge When a Newsletter or Community Co-Founder Wants Out

Carta Liquidity lets the company (or an approved buyer) run a structured tender offer for a set number of shares at a set price, respecting existing transfer restrictions. For a newsletter or community business, that's a reasonable mechanism once price is settled: it formalizes the redemption, updates the cap table, and creates a paper trail. What it doesn't do is tell you what the price should be, and for a subscriber business that's the actual hard problem.

Forge's marketplace works because its network of accredited and institutional buyers is already tracking specific, usually well-known, venture-backed private companies. A paid newsletter or community business, even one with tens of thousands of subscribers across Substack, Circle, or direct billing, isn't a company that network has a reason to already be watching. Listing there is unlikely to produce a buyer who wasn't already interested through some other channel.

Subscriber businesses renew annually or monthly, and the number that matters most to a buyer isn't last year's revenue, it's whether this year's cohort renews at the same rate. A price fixed in January can look wrong by June if renewal comes in soft, or too low if it comes in strong. Whatever price you land on, tie the redemption timing to right after your renewal cycle closes, not to an arbitrary calendar date, so the number reflects a cohort that's actually finished renewing rather than one still mid-cycle.

The cleanest way to fund a co-founder buyback in a subscription business is out of the cash that renewal revenue actually generates, spread over two or three renewal cycles rather than paid as one lump sum funded by debt. This keeps the payout tied to the business continuing to perform, which is fair to both the departing co-founder and the ones staying, and avoids taking on debt against a revenue stream that can move with churn.

Look at churn by acquisition cohort, not just blended churn: a community that's been growing fast can have healthy blended numbers while its oldest, highest-value cohort is quietly eroding, which is exactly the group a departing co-founder's stake is often implicitly priced against if they were part of building the original audience. Also check how much of current revenue depends on one or two platforms (Substack, Circle, direct Stripe billing) that could change their terms or fees, since a platform-concentration risk should factor into price the same way a customer-concentration risk would in any other business.

Before finalizing the redemption price, look at these numbers:

• Churn by acquisition cohort, not only blended churn, since a fast-growing community can hide an eroding older cohort.
• Whether this year's cohort is renewing at the same rate as earlier cohorts, since that drives value.
• How much revenue comes from the cohort the departing co-founder personally built versus newer subscribers from other channels.
• The timing of the main renewal window, so the price reflects the freshest retention data.

Plan for the price to be set in the two to three weeks right after your main renewal window closes, when you have the freshest real data on retention. Documentation and the Carta-administered mechanics, once price is agreed, typically take another two to three weeks. Avoid trying to close a redemption in the middle of a renewal push: not only is the price less reliable then, the team's attention is better spent on the renewal itself than on transaction paperwork.

The most common mistake is pricing a departing co-founder's stake off blended subscriber revenue without breaking out how much comes from the cohort they personally built versus newer subscribers acquired through channels they had little to do with. Say the community has grown to twice its size since the original co-founder was actively involved, largely through paid acquisition the remaining founders built afterward. A price based on today's blended revenue effectively has the departing co-founder getting paid for growth they didn't create, which tends to feel wrong to the remaining founders once someone actually does the math.

Separate legacy-cohort value from growth the remaining team drove independently, and price the buyout closer to the former. In practice this means pulling subscriber data by acquisition source and vintage, isolating the segment that existed or grew organically before the remaining team's paid acquisition efforts began, and using that segment's revenue and retention as the real basis for the departing founder's price, with the rest excluded or valued separately if at all.