BRUSSELS, May 21 (Reuters) - The following are mergers under review by the European Commission and a brief guide to the EU merger process:

APPROVALS AND WITHDRAWALS

-- Private equity firms KKR KKR.N and Bregal Fund to jointly invest in private school operator Cognita (approved May 21)

-- Swedish industrial holding company Lindengruppen and Swedish asset management company Foundation Asset Management Sweden to jointly acquire Swedish metals powder manufacturer Hoganas (approved May 21)

-- Australian warehouse operator Goodman Group GMG.AX to acquire a stake in a container terminal owned by ports operator DP World Limited DPW.DI , which is part of Dubai World

DBWLD.UL (approved May 8)

NEW LISTINGS

-- U.S. derivatives and exchange and clearinghouse operator IntercontinentalExchange Inc ICE.N to buy New York Stock Exchange operator NYSE Euronext NYX.N (notified May 17/deadline June 24)

-- Private equity firm Triton to buy recycling company Befesa from Spanish renewable energy and infrastructure company Abengoa ABG.MC (notified May 17/deadline June 24/simplified)

EXTENSIONS AND OTHER CHANGES

NONE

FIRST-STAGE REVIEWS BY DEADLINE

MAY 27

-- Tokia Rubber 5191.T , which is a subsidiary of Sumitomo Electric Industries 5802.T , to buy car parts maker Anvis Group GmbH from H.I.G. Capital (notified April 16/deadline May 27)

MAY 28

-- Food processor McCain Foods Group to buy potato products supplier Lutosa Business (notified April 3/deadline extended to May 28 from May 13 after McCain offered commitments)

MAY 29

-- Otsuka Pharmaceutical, which is a subsidiary of Otsuka Holdings Co 4578.T , and Japanese trading house Mitsui & Co

8031.T to acquire stakes in Claris Otsuka Ltd which is owned by Indian drugmaker Claris Lifesciences Ltd CLAI.BO (notified April 18/deadline May 29/simplified)

MAY 31

-- Austrian mall developer Spar and the property arm of German insurer Allianz ALVG.DE to set up a property joint venture (notified April 22/deadline May 31/simplified)

-- L. Possehl Co & mbH to buy metal supplier Cookson Precious Metals Business (notified April 22/deadline May 31/simplified)

-- Canada Life, which is a subsidiary of Canadian life insurer Great-West Lifeco GWO.TO , to acquire Irish Life (notified April 22/deadline May 31)

JUNE 4

-- Brazilian investment fund 3G Capital, and Berkshire Hathaway BRKa.N to acquire joint control of U.S. ketchup maker H.J. Heinz Co HNZ.N (notified April 24/deadline June 4)

-- Syral China Investment, which is part of Tereos International TERI3.SA , and Wilmar China New Investments, which is a unit of the Wilmar group, to acquire joint control of Liaoning Jinxin Biology & Chemistry which is now solely owned by Wilmar (April 24/deadline June 4/simplified)

JUNE 6

-- Swiss chocolate maker Barry Callebaut BARN.S to buy the cocoa business of Singaporean group Petra Foods PEFO.SI (notified April 26/deadline June 6)

-- Austrian chemical company Borealis to buy French oil giant Total's TOTF.PA GPN fertiliser business and a majority stake in Belgium-based Rosier (notified April 26/deadline June 6)

JUNE 7

-- Russian dairy producer OJSC Unimilk Co, which is controlled by French food group Danone Group DANO.PA , and French logistics company NDL International, which is controlled by French transport group Norbert Dentressangle GNDP.PA , to form a logistics joint venture (notified April 29/deadline June 7/simplified)

-- Dutch staffing company Randstad RAND.AS to acquire some of Dutch peer USG People NV's USGP.AS assets (notified April 29/deadline June 7)

-- Private equity firms Lion Capital and Avedon Capital Partners to acquire joint control of Dutch snack producer AD Van Geloven Holding (notified April 29/deadline June 7/simplified)

-- Finnish paper producer Ahlstrom AHL1V.HE to merge with a unit of Swedish company Munksjo, which is partly owned by private equity fund EQT (notified Oct. 31/deadline extended for the second time to June 7 from May 16 after Ahlstrom offered concessions)

JUNE 11

-- Qatar Investment Authority and Qatar state-owned hotel group Kingdom Holding Company to acquire joint control of FRHI Holdings which owns hotels in Paris and Singapore (notified May 2/deadline June 11/simplified)

-- Private equity investor Nordic Capital to buy Unicorn which owns marine transport services company Unifeeder A/S (notified May 2/deadline June 11/simplified)

-- Private equity firm KKR KKR.N to acquire indirect control of French clothing retailer SMCP (notified May 2/deadline June 11/simplified)

-- French construction group Vinci SGEF.PA to buy Portuguese airports operator Aeroportos de Portugal (ANA) (notified May 2/deadline June 11)

JUNE 14

-- Diversified U.S. manufacturer Honeywell International Inc. HON.N to acquire mobile computing device maker Intermec

IN.N For $600 million (notified Feb. 15/deadline June 14)

JUNE 17

-- U.S. media group Time Warner TWX.N to acquire sole control of TV operator Central European Media Enterprises in which it currently holds a stake (notified May 8/deadline June 17)

-- Private equity firm CVC to acquire sole control of German energy services company ista GmbH (notified May 8/deadline June 17/simplified)

JUNE 18

-- U.S. group General Electric Co GE.N to buy the aviation business of Italian plane components maker Avio from private equity fund Cinven and Italian defence group Finmeccanica

SIFI.MI (notified May 13/deadline June 18)

JUNE 19

-- U.S. technology services company IBM's IBM.N Italian unit to acquire a new company set up from a business owned by Unicredit Business Integrated Solutions S.c.p.a, part of Italian bank UniCredit S.p.A. CRDI.MI (notified May 14/deadline June 19)

-- German investor Joh A Benckiser (JAB) to buy Dutch coffee and tea maker D.E. Master Blenders 1753 DEMB.AS (notified May 14/deadline June 19/simplified)

JUNE 20

-- U.S. carrier Delta Air Lines DAL.N to buy a 49 percent stake in British peer Virgin Atlantic VA.UL (notified May 15/deadline June 20)

-- Dell Chief Executive Michael Dell and private equity firm Silver Lake Partners to buy out personal computer maker Dell Inc

DELL.O (notified May 15/deadline June 20)

-- U.S. communications company Syniverse Technologies

SVRTE.UL to buy Luxembourg-based communications services company Mach (notified Nov. 16/deadline extended for the third time to June 20 from May 30 after Syniverse offered additional commitments)

SEPT 3

-- Greek carrier Aegean Airlines AGNr.AT to buy Olympic Air MRFr.AT (notified Feb. 28/deadline extended for the second time to Sept. 3 from April 23 after the Commission opened an in-depth investigation)

SEPT 6

-- Swedish refiner Nynas to purchase certain assets from Royal Dutch Shell's RDSa.L Harburg refinery (notified Feb. 19/deadline extended for the second time to Sept. 6 from Aug. 8)

GUIDE TO EU MERGER PROCESS

DEADLINES:

The European Commission has 25 working days after a deal is filed for a first-stage review. It may extend that by 10 working days to 35 working days, to consider either a company's proposed remedies or an EU member state's request to handle the case.

Most mergers win approval but occasionally the Commission opens a detailed second-stage investigation for up to 90 additional working days, which it may extend to 105 working days.

SIMPLIFIED:

Under the simplified procedure, the Commission announces the clearance of uncontroversial first-stage mergers without giving any reason for its decision. Cases may be reclassified as non-simplified -- that is, ordinary first-stage reviews -- until they are approved.

(Editing by Foo Yun Chee)

((brussels.newsroom@thomsonreuters.com)(+32-2-287-6830))

Keywords: EU MERGERS/TAKEOVERS