2 unchanged sentences
Our common stock is listed on The Nasdaq Stock Market LLC under the symbol “PIRS” and on June 30, 2015 our common stock began trading on The Nasdaq Capital Market.
−Removed: As of March 29, 2021, there were 49 and 4 stockholders of record of our common stock and preferred stock, respectively.
+Added: As of February 24, 2022, there were 40 and 4 stockholders of record of our common stock and preferred stock, respectively.
Because many of our shares are held by brokers and other institutions on behalf of stockholders, we are unable to estimate the total number of beneficial holders represented by these record holders.
1 unchanged sentence
Issuer Purchases of Equity Securities
−Removed: SELECTED FINANCIAL DATA
−Removed: We are a smaller reporting company as defined by Rule 12b-2 of the Exchange Act and are not required to provide the information required under this item.
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.