
Below is a summary list of investments made by shareholder activists during December. This information was extracted from Hedge Fund Solutions' Catalyst Equity Research Report (TM), a free in-depth weekly research on activist investments.
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| Ticker | Company Name | Activist Investor |
| ACLS | Axcelis Technologies Inc | Sterling Capital |
| AEPI | AEP Industries | KSA Capital |
| ARS | Arris Group | Shamrock Activist Value fund |
| ATML | Atmel Corp. | Microchip Technology |
| AVGN | Avigen Inc | Biotechnology Value Fund |
| BCSB | BCSB Bancorp | Financial Edge Fund |
| BIOD | Biodel Inc | Moab Partners |
| CAMD | California Micro Devices Corp | Dialectic Capital Management |
| CKEC | Carmike Cinemas | Mark Cuban |
| CPWM | Cost Plus | Stephens Investment Management |
| CXX | CombinatoRX, Incorporated | Biotechnology Value Fund |
| CTO | Consolidated Tomoka Land Co | Wintergreen Advisers |
| DANKY | Danka Business Systems PLC | DCML LLC |
| DDS | Dillard's Inc. | Barington Capital; Clinton Group |
| DIN | DineEquity Inc | Southeastern Asset Management |
| DPS | Dr Pepper Snapple Group | Trian Fund |
| DUSA | DUSA Pharmaceuticals | SRB Management |
| DVD | Dover Motorsports | GAMCO |
| ESIO | Electro Scientific Industries | Nieremberg Investment Management |
| FIC | Fair Isaac Corp | Sandell Asset Management |
| FSFG | First Savings Financial Group | Joseph Stilwell |
| GGP | General Growth Properties | Pershing Square Capital |
| GLOB.OB | Global Med Technologies | Victory Park Capital |
| HIFN | Hifn, Inc | Adaptec, Inc |
| ICGN | ICAgen, Inc | Xmark Opportuntiy Partners |
| INFS | InFocus Corp | Nery Capital Partners |
| ITP | Intertape Polymer Group | KSA Capital Management |
| JAVA | Sun Microsystems | Southeastern Asset Management |
| JTX | Jackson Hewitt Tax Service | Shamrock |
| KANA.OB | Kana Software | KVO Capital Management |
| KFS | Kingsway Financial Services | Joseph Stilwell |
| KONA | Kona Grill | Mill Road Capital |
| LAQ | The Latin America Equity Fund | City of London Investment Management Co |
| LCAV | LCA-Vision Inc. | Stephen Joffe |
| MAG | Magnetek Inc | Riley Investment Management |
| MATH.PK | Mathstar, Inc | Salvatore Muoio; Zannet Opportunity Fund |
| MGAM | Multimedia Games | Dolphin Limited Partnership |
| MGLN | Magellan Health Services | Shamrock |
| MOVE | Move Inc. | Nierenberg Investmetn Management |
| MVCO | Meadow Valley Corp | Carpe Diem Capital |
| NDD | Neuberger Berman Dividend Advantage Fund | Western Investment |
| NTMD | Nitromed Inc | Deerfield Capital |
| OFIX | Orthofix International | Ramius Capital; |
| OPTV | OpenTV Corp. | Discovery Equity Partners |
| ORNG | Orange 21 | Costa Brava Partnership |
| PHMD | PhotoMedex, Inc. | James Sight |
| PIF | Insured Municipal Income Fund | Bulldog Investors |
| PPCO | PenWest Pharmaceuticals | Perceptive Advisors |
| PRXI | Premier Exhibitions, Inc | Sellers Capital |
| RDC | Rowan Companies | Steel Partners |
| RHIE | RHI Entertainment | Baupost Group |
| RIVR | River Valley Bancorp | Davee Thomas |
| SLRY | Salary.com | Cannell Capital |
| SLTC | Selectica, Inc | Versata |
| SUG | Southern Union Co | Sandell Asset Management |
| SUTM.OB | Sun-Times Media Group Inc. | K Capital |
| TIER | Tier Technologies Inc | Discovery Equity Partners |
| TLGD | Tollgrade Communications Inc | Bradford Capital |
| TMI | TM Entertainment & Media | Bulldog Investors |
| TRGL | Toreador Resources | Nanes Delorme Partners |
| TRMA | Trico Marine | Kistefos AS |
| TXCC | TranSwitch Corp | Brener International Group |
| TXI | Texas Industries | Southeastern Asset Management |
| WBSN | Websense Inc | Shamrock |
| WEDC | White Electronic Designs Corp | Wynnefield Capital |
| WOC | Wilshire Enterprises | Bulldog Investors |
| WRLS | Telular Corp | Simcoe Partners |