Investor Alpine Associates Management Inc.
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Alpine Associates 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.

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Date Form Target Prev
Shares		 Current
Shares		 Change
(Percent)		 Ownership
(Percent)		 Change
(Percent)
2025-08-05 13G RDUS / Radius Recycling, Inc. 1,496,319
2024-05-20 13G/A SP / SP Plus Corporation 999,100 0
2024-02-12 13G SP / SP Plus Corporation 999,100
2023-12-08 13G/A IRBT / iRobot Corporation 1,501,100 589,732
2023-02-10 13G IRBT / iRobot Corporation 1,501,100
2020-11-06 13G/A US00790X1019 / Advanced Disposal Services, Inc. 4,710,972 0
2020-02-12 13G US00790X1019 / Advanced Disposal Services, Inc. 4,710,972
2018-02-09 13G/A NXTM / NxStage Medical, Inc. 4,035,237 3,285,826
2018-02-08 13G NXTM / NxStage Medical, Inc. 4,035,237
2016-02-16 13G/A CTCT / Constant Contact, Inc. 2,117,149 0
2016-02-16 13G/A OCAT / Ocata Therapeutics, Inc. 2,409,553 2,092,204
2016-02-12 13G CTCT / Constant Contact, Inc. 2,117,149
2016-02-12 13G OCAT / Ocata Therapeutics, Inc. 2,409,553