Investor Wasserstein Debt Opportunities Management, L.p.
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Wasserstein Debt Opportunities Management, L.p. . 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)
2025-03-19 13G CLMT / Calumet, Inc. 6,033,379 6,033,379
2025-02-25 13D CLMT / Calumet, Inc. 6,098,084 6,033,379
2025-02-25 13G/A CLMT / Calumet, Inc. 6,098,084 6,039,531
2025-02-18 13G/A CLMT / Calumet, Inc. 6,534,338 6,098,084
2023-02-10 13G/A CLMT / Calumet, Inc. 4,710,951 6,534,338
2022-02-14 13G/A CLMT / Calumet, Inc. 5,116,225 4,710,951
2021-10-12 13G CLMT / Calumet, Inc. 5,116,225
2019-01-31 13G/A PYX / Pyxus International, Inc. 368,356
2019-01-31 13G/A IO / ION Geophysical Corp 732,471 692,803
2018-10-26 13G IO / ION Geophysical Corp 732,471
2018-08-31 13G AOI / Alliance One International 456,226