Friedberg Ezra M bought PTHS

Footnotes

The numbers reported herein have been adjusted to reflect the 1-for-10 reverse stock split effected by the Issuer on July 1, 2025.; The Series A convertible preferred stock is convertible at any time, at the holder's election, and has no expiration date. The Series A convertible preferred stock is subject to a contractual limitation such that the holder may not convert Series A convertible preferred stock to the extent that after giving effect to such conversion, the holder (together with its attribution parties as defined in the certificate of designations) would beneficially own in excess of 4.99% of the shares of common stock outstanding immediately after giving effect to such conversion.; Ezra Friedberg is the manager of Balmoral Financial Group LLC ("Balmoral") and the manager of Key Recovery Group LLC ("Key"). By virtue of this relationship, Mr. Friedberg may be deemed to beneficially own the shares of Common Stock held of record by each of Balmoral and Key. Mr. Friedberg disclaims any such beneficial ownership except to the extent of his pecuniary interest therein.