Investor Potomac Capital Management, Inc.
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Potomac Capital Management, Inc. . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

Date Form Target Prev
Shares
Current
Shares
Change
(Percent)
Ownership
(Percent)
Change
(Percent)
2025-09-02 13G XELB / Xcel Brands, Inc. 316,249
2021-02-16 13G/A HBIO / Harvard Bioscience, Inc.
2020-02-07 13G/A HBIO / Harvard Bioscience, Inc.
2019-07-17 13G HBIO / Harvard Bioscience, Inc.
2018-01-29 13G/A CRTN / Cartesian, Inc. 744,188
2017-02-06 13G/A CRTN / Cartesian, Inc. 744,188
2017-02-06 13G/A NMRX / Numerex Corp. 1,085,811