Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.
−Removed: Our common stock has been listed on NYSE American under the symbol “PTN” since December 21, 1999.
−Removed: It previously traded on The Nasdaq SmallCap Market under the symbol “PLTN.”
−Removed: On September 27, 2024 we had approximately 90 record holders of common stock and the closing sales price of our common stock as reported on the NYSE American was $0.84 per share.
+Added: Our common stock traded on NYSE American under the symbol “PTN” from December 21, 1999 to May 8, 2025, and since May 8, 2025 has traded on the OTCQB® Venture Market operated by OTC Markets Group, Inc.
+Added: under the symbol “PTNT”.
+Added: Since August 8, 2025, when the reverse stock split of our shares at a ratio of 1-for-50 was effective, our shares have traded under the symbol “PTNTD”, which continued for 20 trading dates, ending on September 10, 2025.
+Added: Over-the-counter market quotations or prices represent inter-dealer prices without retail mark-ups, mark-downs or commissions, and may not necessarily represent actual transactions.
+Added: On September 19, 2025 we had approximately 50 record holders of common stock and the closing sales price of our common stock as reported on the OTCQB was $8.64 per share.
The aggregate market value of the common and non-voting common equity held by non-affiliates on such date, computed by reference to the closing sales price of our common stock on that date, was $8,346,059
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