Exhibit 99(l)(21)
PURCHASE AGREEMENT
The RBB Fund Trust (the “Trust”), a Delaware statutory trust, and Seven Post Investment Office LP (“Seven Post”), intending to be legally bound, hereby agree with each other as follows:
1. The Trust hereby offers Seven Post and Seven Post hereby purchases one (1) share (the “Share”) of the Equity Partners ETF (the “Fund”) at price per Share equivalent to the net asset value per Share of the Fund as determined on November 5, 2026.
2. The Trust hereby acknowledges receipt from Seven Post of funds in the amount of $25 in full payment for the Share.
3. Seven Post represents and warrants to the Trust that the Share is being acquired for investment purposes and not with a view to the distribution thereof.
4. This Agreement may be executed in counterparts, and all such counterparts taken together shall be deemed to constitute one and the same instrument.
IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of November 5, 2026.
| The RBB Fund Trust | |||
| By: | _/s/ James G. Shaw______________ | ||
| Name: | James G. Shaw | ||
| Title | Chief Financial Officer, Chief Operating Officer, and Secretary | ||
Seven Post Investment Office LP
| |||
| By: | _/s/ Ali Bastani________________ | ||
| Name: Ali Bastani | |||
| Title: Managing Director | |||