The mechanic in section 04 is that both families chose a residual holding and sold toward it, indifferent to the tape. For a private company the executable equivalent is partial liquidity without loss of control — a share redemption, or a secondary of a minority block, sized to a post-transaction ownership percentage decided before any valuation discussion begins.

The transferable part is the ordering. Deciding what you want to still own, then negotiating, is a different negotiation from deciding how much to sell once you have heard the price.