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Cover Image Gregory Grogan
Gregory GroganSimpson Thacher & Bartlett

Gregory Grogan

Partner at Simpson Thacher & Bartlett

Lawyer

New York

Deal Bio

Total Deals93
Valued Deals60
Total Value£341,772M
Avg. Deal Size£5,696M

Awards

2023 Top Employment Lawyers in North America
2022 Top Employment Lawyers in North America
2021 Top Employment Lawyers in North America

Sort

United States
Financial Data and Systems
PrivateDisposalPrivate EquityMajorityAcquisition
Refinitiv Holdings

target

Refinitiv Holdings

Blackstone Group

bidder

Blackstone Group

£12,058m

102 dealmakers

United States
Retail REITs
AcquisitionPrivate EquityPublicMajority
Ggp

target

Ggp

Brookfield Property Group

bidder

Brookfield Property Group

£18,887m

58 dealmakers

United States
Medical Services
AcquisitionPrivatePrivate Equity
Sound Inpatient Physicians Holdings

target

Sound Inpatient Physicians Holdings

Summit Partners

bidder

Summit Partners

£1,530m

7 dealmakers

United States
Auto Parts
PrivateDisposalPrivate EquityAcquisitionMajority
Johnson Controls International (power Solutions Business)

target

Johnson Controls International (power Solutions Business)

Brookfield Asset Management

bidder

Brookfield Asset Management

£10,280m

76 dealmakers

United States
Medical Equipment
AcquisitionPrivatePrivate EquityPrivate Equity
Djo Global

target

Djo Global

Colfax Corporation

bidder

Colfax Corporation

£2,453m

18 dealmakers

United States
Software
PrivateAcquisitionPrivate EquityMajority
GITHUB

target

GITHUB

Microsoft Corp

bidder

Microsoft Corp

£5,929m

68 dealmakers

United States
Electronic Components and Equipment
AcquisitionPrivate EquityPrivate
Encore Event Technologies

target

Encore Event Technologies

Encore Group Usa

bidder

Encore Group Usa

value n/a

21 dealmakers

United States
Marine Transportation
AcquisitionPrivate EquityPrivate
CARRIX

target

CARRIX

Blackstone Group

bidder

Blackstone Group

value n/a

28 dealmakers

United States
Diversified Engineering Procurement Construction (EPC)
AcquisitionPrivatePrivate EquityMajority
SERVPRO

target

SERVPRO

Blackstone Group

bidder

Blackstone Group

£756m

36 dealmakers

India
Containers and Packaging
AcquisitionMajorityPrivatePrivate Equity
Essel Propack

target

Essel Propack

Blackstone Group

bidder

Blackstone Group

£354m

43 dealmakers

United States
Digital Services
PrivateAcquisitionPrivate EquityDomesticMajority
VUNGLE

target

VUNGLE

Blackstone Group

bidder

Blackstone Group

£602m

25 dealmakers

United Kingdom
Financial Data and Systems
MajorityAcquisitionPrivate EquityPrivateDomesticDisposal
Refinitiv Holdings

target

Refinitiv Holdings

London Stock Exchange Group

bidder

London Stock Exchange Group

£22,177m

171 dealmakers

United States
IT Services: Other
AcquisitionPrivatePrivate EquityMajorityDe-SPAC
Vivint Smart Home

target

Vivint Smart Home

Mosaic Acquisition Corp

bidder

Mosaic Acquisition Corp

£3,131m

64 dealmakers

United States
Recreational Services
AcquisitionPrivateJoint VenturePrivate EquityMajority
Great Wolf Resorts

target

Great Wolf Resorts

Blackstone Group

bidder

Blackstone Group

£2,361m

27 dealmakers

United States
Banks
DomesticPublicMergerMajority
Iberiabank Corporation

target

Iberiabank Corporation

First Horizon National Corp

bidder

First Horizon National Corp

£3,012m

42 dealmakers

United States
Mortgage Finance
Private EquityMajorityPrivateAcquisitionDomestic
Stearns Holdings

target

Stearns Holdings

Blackstone Group

bidder

Blackstone Group

£59m

23 dealmakers

United Kingdom
Online and Social Platforms
PrivateMajorityAcquisitionPrivate Equity
MAGICLAB

target

MAGICLAB

Blackstone Group

bidder

Blackstone Group

value n/a

58 dealmakers

United States
Diversified Materials
MajorityPrivate EquityAcquisitionPrivate
Ilc Dover

target

Ilc Dover

New Mountain Capital

bidder

New Mountain Capital

value n/a

23 dealmakers

United States
Defense
AcquisitionMajorityPrivateDomestic
Raytheon Technologies (space-based Precision Optics Business)

target

Raytheon Technologies (space-based Precision Optics Business)

Amergint Technologies Holdings

bidder

Amergint Technologies Holdings

£324m

33 dealmakers

United States
IT Services: Other
DomesticPrivateAcquisitionMajority
Erx Network

target

Erx Network

Change Healthcare

bidder

Change Healthcare

£170m

30 dealmakers

United States
Alternative Electricity
PublicAcquisitionMajorityPrivate EquityDomestic
Vivint Solar

target

Vivint Solar

SUNRUN

bidder

SUNRUN

£2,561m

82 dealmakers

United States
Publishing
AcquisitionMajorityPrivate EquityPrivateDomestic
Ancestry.com

target

Ancestry.com

Blackstone Group

bidder

Blackstone Group

£2,699m

77 dealmakers

United States
Integrated Oil and Gas
AcquisitionPrivate EquityMinorityPublicCross Border
Cheniere Energy

target

Cheniere Energy

Brookfield Asset Management

bidder

Brookfield Asset Management

£5,347m

81 dealmakers

United States
Biotechnology
PrivateAcquisitionMajorityPrivate EquityDomestic
Chart Industries (mve Biological Products)

target

Chart Industries (mve Biological Products)

Blackstone Group

bidder

Blackstone Group

£244m

48 dealmakers

United StatesUnited States
Entertainment
MajorityDomesticPrivateAcquisitionPrivate Equity
Zenimax Media

target

Zenimax Media

Microsoft Corp

bidder

Microsoft Corp

£5,804m

53 dealmakers

United States
Consumer Lending
MajorityAcquisitionReverse TakeoverPrivateMergerDomesticPrivate EquityDe-SPAC
Finance Of America Companies

target

Finance Of America Companies

Replay Acquisition Corp

bidder

Replay Acquisition Corp

£1,456m

31 dealmakers

United States
Digital Services
MajorityAcquisitionDomesticPrivateDisposalPrivate Equity
GIACT

target

GIACT

Refinitiv Holdings

bidder

Refinitiv Holdings

value n/a

20 dealmakers

United States
Food Products
AcquisitionDomesticDisposalMajorityPrivate
Kind North America

target

Kind North America

Mars

bidder

Mars

value n/a

32 dealmakers

United States
Asset Managers and Custodians
MajorityPrivate EquityAcquisitionPrivateDomestic
Dci

target

Dci

Blackstone Group

bidder

Blackstone Group

value n/a

20 dealmakers

United States
Software
MajorityPrivate EquityPrivateAcquisitionDomestic
LIFTOFF

target

LIFTOFF

Blackstone Group

bidder

Blackstone Group

£299m

25 dealmakers

United States
Security Equipment
PublicAcquisitionPrivate EquityMinorityDomestic
Fireeye

target

Fireeye

CLEARSKY

bidder

CLEARSKY

£302m

34 dealmakers

United States
Health Care Facilities
Private EquityPublicDomesticAcquisitionMajorityMerger
Change Healthcare

target

Change Healthcare

Unitedhealth Group

bidder

Unitedhealth Group

£9,442m

52 dealmakers

Finland
Gaming
PrivateCross BorderMajorityAcquisitionPrivate Equity
GAMEREFINERY

target

GAMEREFINERY

VUNGLE

bidder

VUNGLE

value n/a

23 dealmakers

United States
Recreational Services
AcquisitionPrivateDomesticMajorityRestructuringPrivate Equity
Suntex Marina Investors

target

Suntex Marina Investors

Centerbridge Partners

bidder

Centerbridge Partners

value n/a

19 dealmakers

United States
Software
AcquisitionMajorityPublicDomestic
Nuance Communications

target

Nuance Communications

Microsoft Corp

bidder

Microsoft Corp

£14,367m

60 dealmakers

United States
Mechanical and Electrical Maintenance
MajorityAcquisitionPrivateDomesticPrivate Equity
Nortek Air Management

target

Nortek Air Management

Madison Industries

bidder

Madison Industries

£2,620m

49 dealmakers

United States
Education Services
MinorityPrivate EquityAcquisitionCross BorderPrivate
EAB

target

EAB

Vista Equity Partners

bidder

Vista Equity Partners

value n/a

22 dealmakers

United States
Household Furnishings
Private EquityPrivateMinorityAcquisitionDomestic
Walker Edison

target

Walker Edison

Blackstone Tactical Opportunities

bidder

Blackstone Tactical Opportunities

£213m

40 dealmakers

United States
Environmental / Waste Management
MajorityDomesticPrivate EquityAcquisitionPrivate
Culligan International Company

target

Culligan International Company

Bdt Capital Partners

bidder

Bdt Capital Partners

£4,243m

89 dealmakers

United States
Publishing
DomesticAcquisitionMajorityPrivate EquityPrivate
International Data Group

target

International Data Group

Blackstone Group

bidder

Blackstone Group

£919m

29 dealmakers

United States
Medical Equipment
MajorityDomesticPrivate EquityAcquisitionPrivate
Medline Industries

target

Medline Industries

Hellman & Friedman

bidder

Hellman & Friedman

£24,007m

133 dealmakers

United States
Data Centers and Hosting
MajorityDomesticAcquisitionPrivate EquityPublic
Qts Realty Trust

target

Qts Realty Trust

Blackstone Group

bidder

Blackstone Group

£7,060m

71 dealmakers

United States
Household Appliance
MinorityPrivate EquityAcquisitionPrivateDomestic
Visual Comfort & Co

target

Visual Comfort & Co

Leonard Green & Partners

bidder

Leonard Green & Partners

value n/a

57 dealmakers

United States
Software
AcquisitionPrivate EquityPrivateMajorityDomestic
Ellucian

target

Ellucian

Blackstone Group

bidder

Blackstone Group

value n/a

48 dealmakers

United States
Media Agencies
MajorityDomesticPrivateAcquisitionPrivate Equity
JETFUEL

target

JETFUEL

VUNGLE

bidder

VUNGLE

value n/a

16 dealmakers

United States
Health Care Services
DomesticAcquisitionPrivateMajority
VETSOURCE

target

VETSOURCE

Mars Petcare

bidder

Mars Petcare

value n/a

18 dealmakers

United States
Internet
PrivateDomesticPrivate EquityAcquisitionMinority
Simplifi Holdings

target

Simplifi Holdings

Blackstone Group

bidder

Blackstone Group

value n/a

28 dealmakers

United States
Toys
Private EquityDomesticAcquisitionPrivateMajority
Certified Collectibles Group

target

Certified Collectibles Group

Blackstone Group

bidder

Blackstone Group

£361m

43 dealmakers

United States
Containers and Packaging
DomesticMajorityAcquisitionPrivate
Grupo Phoenix

target

Grupo Phoenix

TEKNI-PLEX

bidder

TEKNI-PLEX

value n/a

32 dealmakers

United States
Software
DomesticAcquisitionMajorityPrivate EquityPrivate
Sphera Solutions

target

Sphera Solutions

Blackstone Group

bidder

Blackstone Group

£1,011m

29 dealmakers

United States
Full Line Insurance
AcquisitionPrivateMinorityDomesticPrivate Equity
Aig (life & Retirement Business)

target

Aig (life & Retirement Business)

Blackstone Group

bidder

Blackstone Group

£1,588m

87 dealmakers

United States
Medical Equipment
MajorityDomesticPrivateAcquisitionPrivate Equity
FLEXAN

target

FLEXAN

New Mountain Capital

bidder

New Mountain Capital

value n/a

37 dealmakers

United States
Renewable Energy Equipment
PublicMinorityDomesticPrivate EquityAcquisition
Array Technologies

target

Array Technologies

Blackstone Group

bidder

Blackstone Group

£361m

21 dealmakers

United States
Health Care Services
DomesticPrivatePrivate EquityAcquisitionMajority
Mdvip

target

Mdvip

Goldman Sachs Asset Management

bidder

Goldman Sachs Asset Management

value n/a

34 dealmakers

United States
Digital Services
PrivateDomesticMajorityPrivate EquityMerger
VUNGLE

target

VUNGLE

Blackstone Group

bidder

Blackstone Group

value n/a

21 dealmakers

United States
Real Estate Services
Private EquityMajorityPrivateAcquisitionDomestic
Chamberlain Group

target

Chamberlain Group

Blackstone Group

bidder

Blackstone Group

£3,612m

38 dealmakers

United States
Hotels and Motels
PrivateDomesticMajorityAcquisitionPrivate Equity
The Cosmopolitan Of Las Vegas

target

The Cosmopolitan Of Las Vegas

Mgm Resorts International

bidder

Mgm Resorts International

£1,187m

69 dealmakers

United States
Software
AcquisitionPrivateMinorityPrivate EquityDomestic
Renaissance Learning

target

Renaissance Learning

Blackstone Group

bidder

Blackstone Group

value n/a

22 dealmakers

United States
Health Care Services
MinorityPrivate EquityAcquisitionDomesticPrivate
Life Science Logistics

target

Life Science Logistics

Blackstone Group

bidder

Blackstone Group

value n/a

27 dealmakers

United States
Gaming
PublicMajorityDomesticAcquisition
Activision Blizzard

target

Activision Blizzard

Microsoft Corp

bidder

Microsoft Corp

£50,263m

59 dealmakers

United States
Telecommunications Equipment
PrivateMinorityDomesticPrivate EquityAcquisition
Phoenix Tower International

target

Phoenix Tower International

Blackstone Infrastructure Partners

bidder

Blackstone Infrastructure Partners

value n/a

19 dealmakers

United States
Software
Private EquityDomesticVenture CapitalMinorityAcquisitionPrivate
CLARI

target

CLARI

Northgate Capital

bidder

Northgate Capital

£165m

17 dealmakers

United States
Management Consulting
MajorityPrivateDomesticAcquisitionPrivate Equity
Citrin Cooperman

target

Citrin Cooperman

New Mountain Capital

bidder

New Mountain Capital

value n/a

32 dealmakers

United States
Online and Social Platforms
PublicPrivatisationMajorityDomesticAcquisition
X Corp (ex-twitter)

target

X Corp (ex-twitter)

Elon Musk

bidder

Elon Musk

£34,502m

152 dealmakers

United States
Electrical Components
MinorityDomesticPublicAcquisitionPrivate Equity
Azz

target

Azz

Blackstone Group

bidder

Blackstone Group

£189m

30 dealmakers

United States
Medical Services
MajorityAcquisitionPrivatePrivate EquityCross Border
ADVARRA

target

ADVARRA

Blackstone Group

bidder

Blackstone Group

£4,035m

43 dealmakers

United States
Medical Equipment
AcquisitionPrivateMajorityDomesticPrivate Equity
Perkinelmer (applied, Food And Enterprise Services Businesses)

target

Perkinelmer (applied, Food And Enterprise Services Businesses)

New Mountain Capital

bidder

New Mountain Capital

£2,009m

88 dealmakers

Germany
Software
Private EquityPrivateAcquisitionMajorityCross Border
RISKMETHODS

target

RISKMETHODS

Blackstone Group

bidder

Blackstone Group

value n/a

22 dealmakers

United States
Life Insurance
DomesticPrivate EquityPrivateMinorityAcquisition
Resolution Life

target

Resolution Life

Blackstone Group

bidder

Blackstone Group

£452m

28 dealmakers

United States
Electronic Components and Equipment
AcquisitionPrivateDomesticPrivate EquityMajority
Copeland (ex Emerson Climate Technologies)

target

Copeland (ex Emerson Climate Technologies)

Blackstone Group

bidder

Blackstone Group

£6,775m

96 dealmakers

India
Digital Services
PublicPrivate EquityMajorityAcquisitionCross Border
R Systems

target

R Systems

Blackstone Group

bidder

Blackstone Group

£311m

82 dealmakers

United States
Other Specialty REITs
PublicTender OfferAcquisitionCross BorderMajorityPrivate Equity
Indus Realty Trust

target

Indus Realty Trust

Gic Real Estate

bidder

Gic Real Estate

£718m

49 dealmakers

United States
IT Services: Other
PublicDomesticAcquisitionMajority
Vivint Smart Home

target

Vivint Smart Home

Blackstone Group

bidder

Blackstone Group

£4,242m

97 dealmakers

United States
Mortgage Finance
AcquisitionDomesticPrivateMajority
American Advisors Group (assets)

target

American Advisors Group (assets)

Finance Of America Companies

bidder

Finance Of America Companies

value n/a

26 dealmakers

United States
Food Products
AcquisitionDomesticPrivateMajority
Trü Frü

target

Trü Frü

Mars

bidder

Mars

value n/a

26 dealmakers

United States
Software
DomesticPrivate EquityPublicAcquisitionMajorityPrivatisation
Cvent

target

Cvent

Blackstone Group

bidder

Blackstone Group

£3,792m

73 dealmakers

United States
Food Products
AcquisitionDomesticPrivateMajority
Kevin's Natural Foods

target

Kevin's Natural Foods

Mars

bidder

Mars

£629m

24 dealmakers

United States
Hotels and Motels
AcquisitionMajorityPrivate EquityDomesticPublic
Hersha Hospitality Trust

target

Hersha Hospitality Trust

Ksl Capital Partners

bidder

Ksl Capital Partners

£1,104m

82 dealmakers

United States
FinTech
AcquisitionPrivateMinorityDomesticPrivate Equity
R&t Deposit Solutions

target

R&t Deposit Solutions

Gtcr

bidder

Gtcr

value n/a

34 dealmakers

United States
Software
AcquisitionDomesticMajorityPublic
Splunk

target

Splunk

Cisco Systems

bidder

Cisco Systems

£24,243m

77 dealmakers

United States
Entertainment
PrivateDomesticMajorityPrivate EquityAcquisition
Broadcast Music (bmi)

target

Broadcast Music (bmi)

New Mountain Capital

bidder

New Mountain Capital

value n/a

45 dealmakers

United States
Restaurants and Bars
AcquisitionDomesticPrivate EquityMinorityPrivate
7 Brew Coffee

target

7 Brew Coffee

Blackstone Group

bidder

Blackstone Group

value n/a

30 dealmakers

United States
Diversified Materials
MajorityPrivateAcquisitionDomesticPrivate Equity
Ilc Dover

target

Ilc Dover

Ingersoll Rand

bidder

Ingersoll Rand

£1,844m

34 dealmakers

United States
Telecommunications Equipment
AcquisitionMinorityPrivatePrivate EquityDomestic
Phoenix Tower International

target

Phoenix Tower International

Grain Management

bidder

Grain Management

value n/a

30 dealmakers

United States
Entertainment
DomesticPublicAcquisitionPrivatisationPrivate EquityMajority
ENDEAVOR

target

ENDEAVOR

Mubadala Investment Company

bidder

Mubadala Investment Company

£19,850m

103 dealmakers

United States
Residential REITs
AcquisitionDomesticMajorityPrivate EquityPublicPrivatisation
Apartment Income Reit

target

Apartment Income Reit

Blackstone Group

bidder

Blackstone Group

£7,912m

37 dealmakers

United Arab Emirates
Software
AcquisitionMinorityPrivateCross Border
G42

target

G42

Microsoft Corp

bidder

Microsoft Corp

£1,203m

32 dealmakers

United States
Restaurants and Bars
PrivatePrivate EquityDomesticAcquisitionMajority
Tropical Smoothie Cafe

target

Tropical Smoothie Cafe

Blackstone Group

bidder

Blackstone Group

value n/a

39 dealmakers

United States
Medical Equipment
AcquisitionDomesticMajorityPrivate
Ecolab (surgical Solutions Business)

target

Ecolab (surgical Solutions Business)

Medline Industries

bidder

Medline Industries

£739m

37 dealmakers

United States
Digital Services
DomesticAcquisitionMajorityPrivate
REPOSITE

target

REPOSITE

Cvent

bidder

Cvent

value n/a

17 dealmakers

Japan
Pharmaceuticals
PrivateCross BorderAcquisitionMajority
Alinamin Pharmaceutical

target

Alinamin Pharmaceutical

Mbk Partners

bidder

Mbk Partners

£1,659m

19 dealmakers

United States
Construction Services
Private EquityAcquisitionMinorityDomesticPrivate
Air Control Concepts (ex-hobbs & Associates)

target

Air Control Concepts (ex-hobbs & Associates)

Blackstone Group

bidder

Blackstone Group

value n/a

33 dealmakers

United Kingdom
Electronic Components and Equipment
AcquisitionCross BorderMajorityPrivate
Nvent Electric (thermal Management Business)

target

Nvent Electric (thermal Management Business)

Brookfield Asset Management

bidder

Brookfield Asset Management

£1,323m

25 dealmakers

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