How does Regulation A+ provide liquidity to investors and founders and long term investors?
For the investor, the degree of actual liquidity depends on what the Issuer company does after their Reg A+ offering. If they list on the NASDAQ or NYSE then liquidity can be excellent. If they list on the OTCQB or the OTCQX, then the liquidity can be good to very good.
When an Issuer company does not list on the above exchanges, then liquidity is limited to the specialized Reg A+ aftermarket exchanges and broker-dealers that support Reg A+ share trading in the aftermarket. These exchanges are small and offer limited liquidity at present, they are growing to fill the need.
The Issuer company may choose to offer direct liquidity to their investors by defining in their Offering Circular what valuation method they will use and what other restrictions will apply. This type of liquidity is regulated.
The pleasant surprise for many company founders and long-term investors is that when a Tier 2 type Reg A+ completes it's 6 monthly reports of profits and losses, then for 90 days after the results are announced, the company founders and long-term investors that have passed their Rule 144 holding period (usually 12 months) are allowed to sell their non-Reg A+ shares. Preferred or common stock. Insiders (management and founders) and investors that own more than 10% of the stock in the company are restricted to selling less than 1% of the "Float" (the daily trading volume of shares or other securities) per day.
Issuers that want their Reg A+ shares to be tradable all year round can make quarterly management financial filings with the SEC, this then opens up liquidity for insiders all year.