ITEM 5. OTHER INFORMATION.

Nasdaq Delisting & OTC Quotation

Our common stock was previously listed on The Nasdaq Capital Market (“Nasdaq”). As previously disclosed, our common stock was not in compliance with the requirement under Nasdaq Listing Rule 5550(a)(2) to maintain a minimum bid price of $1.00 per share for continued listing on Nasdaq (the “Bid Price Requirement”), and we had until May 11, 2026, which was the maximum extent of the discretionary authority of the Nasdaq Hearings Panel (the “Panel”).

Having not regained compliance with the Bid Price Requirement by such date, we received a letter from the Panel dated May 12, 2026 indicating that the Panel had determined to delist our common stock from Nasdaq. Our common stock will be suspended from trading on Nasdaq as of the open of trading on May 14, 2026.

Beginning on May 14, 2026, our common stock will be quoted on the OTCQB Venture Market operated by OTC Markets Group Inc. under its existing symbol “RVPH.”

Rule 10b5-1 Trading Arrangements and Non-Rule 10b5-1 Trading Arrangements

During the fiscal quarter ended March 31, 2026, none of our officers or directors, as those terms are defined in Rule 16a-1(f), adopted or terminated a "Rule 10b5-1 trading arrangement" or a "non-Rule 10b5-1 trading arrangement," as those terms are defined in Item 408 of Regulation S-K.