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22 HARTFORDBUSINESS.COM | AUGUST 11, 2025 The Lists The company that builds and installs the critical systems in virtually every type of facility is the same company you can rely on to maintain them. For over over 50 years, our clients have trusted us to deliver end-to-end facilities solutions, so they can focus on their core business. We design, install, and maintain systems in: Industrial, Manufacturing, Commercial, Higher Education, Healthcare, and Pharmaceutical facilities. WE FOCUS ON YOUR FACILITIES— SO YOU CAN FOCUS ON YOUR BUSINESS. MECHANICAL | ELECTRICAL | PLUMBING | SHEET METAL | BUILDING AUTOMATION | FACILITIES SERVICES 860.871.1111 Toll Free: 800.741.6367 nemsi.com License #'s: E1-197483 S1-406020 P1-290301 SM1-975 MC-1134 PRIVATELY-HELD COMPANIES IN GREATER HARTFORD (1) Ranked by number of local employees Privately-held companies in Greater Hartford (1) Ranked by number of local employees Company Local employees/ statewide/ total Local employee range (2) Description Executive(s) Year founded 1 Bozzuto's Inc. (3) Schoolhouse Road, Cheshire 06410 203-272-3511; bozzutos.com N/A N/A 3,500 1,000—4,999 Family-owned wholesale distributor of food and household products Michael A. Bozzuto President & CEO 1945 2 Healthtrax Fitness & Wellness 622 Hebron Ave., Suite 200A, Glastonbury 06033 860-633-5572; healthtrax.com N/A N/A 1,500 (4) 1,000—4,999 Health and fitness centers Kenneth Navarro CEO 1979 3 Kaman Corp. (5) 1332 Blue Hills Ave., Bloomfield 06002 860-243-7100; kaman.com 990 (6) N/A N/A 1,000—4,999 Manufacturer of aerospace parts and components Ross Sealfon President & CEO 1945 4 DATTCO Inc. 583 South St., New Britain 06051 860-229-4878; dattco.com 900 (7) 1,600 (7) 2,000 (7) 500—999 Transportation provider with vehicle sales and service, fleet management, charter services and tours nationwide Donald DeVivo President 1924 5 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641; lazparking.com 837 1,059 20,000 N/A Parking operator and digital parking technology Alan Lazowski Chairman & CEO 1981 6 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399; data-mail.com 800 800 800 N/A Family-owned direct marketing firm Andy Mandell Owner 1971 7 PwC 185 Asylum St., Hartford 06103 860-241-7000; pwc.com N/A N/A N/A 500—999 Accounting and audit services Keith J. Hubert Office managing partner 1890 8 Manafort Bros. Inc. 414 New Britain Ave., Plainville 06062 860-229-4853; manafort.com N/A N/A N/A 500—999 Family-owned provider of construction and demolition services James A. Manafort Jr. President 1919 9 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688; momentumsolar.com 578 (7) 578 (7) 2,500 (7) N/A Solar technology installations Arthur Souritzidis CEO 2009 10 TRUMPF Inc. 111 Hyde Road, Farmington 06032 860-255-6000; trumpf.com 478 802 1,662 N/A Manufacturer of industrial lasers and fabricating Lutz Labisch President & CEO 1969 11 Benchmark Senior Living 432 Buckland Road, South Windsor 06074 781-786-7745; benchmarkseniorliving.com 431 (8) 2,204 (8) 6,491 (8) 500—999 Senior living communities with independent living, assisted living, respite care, mind and memory care, skilled nursing Tom Grape Founder, chairman & CEO 1997 12 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341; ctspring.com 400 N/A 400 N/A Family-owned manufacturer of springs, stampings and machined components Peter Youmans CEO 1939 13 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101; deringerney.com 400 (9) N/A N/A 250—499 Custom precious metal alloys Jay Policastro President & CEO 1812 (10) 14 LEGO Systems Inc. (11) 100 Print Shop Road, Enfield 06082 860-749-2291; lego.com 400 N/A 31,000 N/A Toy manufacturer Skip Kodak Senior vice president, Global Commercial Operations 1932 15 Hobson & Motzer Inc. (12) 30 Airline Drive, Durham 06422 860-349-1756; hobsonmotzer.com 400 (13) N/A N/A 250—499 Manufacturer of precision metal stamping and advanced machining Brian King CEO, Vantedge Medical 1912 16 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724; trinity-solar.com 400 (7) 400 (7) 3,317 (7) N/A Family-owned solar energy company Tom Pollock CEO 1994 17 Deloitte LLP and subsidiaries 185 Asylum St., Hartford 06103 860-725-3000; deloitte.com 383 1,367 N/A N/A Audit, tax, financial advisory and consulting Richard Tavolieri Managing partner 1895 18 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515; ebmpapst.us 360 N/A 13,800 N/A Designer and manufacturer of high efficiency motor Mark J. Shiring CEO, Air Technology Americas 1981 19 PCX Aerosystems (14) 300 Fenn Road, Newington 06111 860-666-2471; pcxaero.com 339 339 631 N/A Manufacturer of highly engineered, critical flight components and composite fabrications Thomas Holzthum CEO Aris Fotos President, Conn. operations 1900 20 Avna Inc. (15) 200 Ellis St., New Britain 06051 860-225-8707; avna.com 320 320 480 N/A Manufacturer of medical devices, surgical components & sub-assemblies for mechanical, precision-powered & robotic applications Jason M. Howey President & CEO 1911 21 Ernst & Young LLP 20 Church St., Hartford 06103 860-247-3100; ey.com 262 663 N/A N/A Audit, assurance and consulting services, tax, strategy and transaction advisory and due diligence, risk advisory Sean Riegler Managing partner 1918 22 Charter Oak Building Maintenance Inc. 3466 Main St., Hartford 06120 860-632-5667; cobm.net 254 254 254 N/A Facility maintenance and janitorial services Kenia M. Thomas CEO 1988 23 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481; ulbrich.com 250 350 800 N/A Manufacturer of precision re-roller and distributor of stainless steel & special metals for applications worldwide Chris Ulbrich Chairman of the board Jonathan Ulbrich CEO 1924 Source: Each company via survey as of Q2-Q3 2025, company websites and Connecticut Department of Labor market research data. Note: N/A = Not available or not applicable. (1) Banks, private colleges and employee-owned (ESOP) companies were not considered for this list. (2) Local employee counts fall within this range, according to the Connecticut Department of Labor market research data as of July 21, 2025. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) According to PitchBook. (5) In April 2024, Arcline Investment Management LP acquired Kaman Corp. for $1.8 billion, shares ceased trading on the New York Stock Exchange. (6) Employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of the restructuring. (7) Employee counts from 2024 survey. (8) Data from Q3 2023. (9) Data from Town of Bloomfield Annual Financial Report, June 2023 (10) Founding year for J.M. Ney Co. (11) In January 2023, announced plans to consolidate North American headquarters in Boston; the move began this year and is expected to be completed in 2026. The LEGO Group is privately held and based in Billund, Denmark. (12) San Jose, Calif.-based Vantedge Medical acquired Hobson & Motzer in August 2024. (13) Data from hobsonmotzer.com (14) Formerly SPX Precision Components. (15) Formerly Okay Industries. -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com 2 Healthtrax Fitness & Wellness 622 Hebron Ave., Suite 200A, Glastonbury 06033 860-633-5572; healthtrax.com N/A N/A 1,500 (4) 1,000—4,999 Health and fitness centers Kenneth Navarro CEO 1979 3 Kaman Corp. (5) 1332 Blue Hills Ave., Bloomfield 06002 860-243-7100; kaman.com 990 (6) N/A N/A 1,000—4,999 Manufacturer of aerospace parts and components Ross Sealfon President & CEO 1945 4 DATTCO Inc. 583 South St., New Britain 06051 860-229-4878; dattco.com 900 (7) 1,600 (7) 2,000 (7) 500—999 Transportation provider with vehicle sales and service, fleet management, charter services and tours nationwide Donald DeVivo President 1924 5 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641; lazparking.com 837 1,059 20,000 N/A Parking operator and digital parking technology Alan Lazowski Chairman & CEO 1981 6 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399; data-mail.com 800 800 800 N/A Family-owned direct marketing firm Andy Mandell Owner 1971 7 PwC 185 Asylum St., Hartford 06103 860-241-7000; pwc.com N/A N/A N/A 500—999 Accounting and audit services Keith J. Hubert Office managing partner 1890 8 Manafort Bros. Inc. 414 New Britain Ave., Plainville 06062 860-229-4853; manafort.com N/A N/A N/A 500—999 Family-owned provider of construction and demolition services James A. Manafort Jr. President 1919 9 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688; momentumsolar.com 578 (7) 578 (7) 2,500 (7) N/A Solar technology installations Arthur Souritzidis CEO 2009 10 TRUMPF Inc. 111 Hyde Road, Farmington 06032 860-255-6000; trumpf.com 478 802 1,662 N/A Manufacturer of industrial lasers and fabricating Lutz Labisch President & CEO 1969 11 Benchmark Senior Living 432 Buckland Road, South Windsor 06074 781-786-7745; benchmarkseniorliving.com 431 (8) 2,204 (8) 6,491 (8) 500—999 Senior living communities with independent living, assisted living, respite care, mind and memory care, skilled nursing Tom Grape Founder, chairman & CEO 1997 12 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341; ctspring.com 400 N/A 400 N/A Family-owned manufacturer of springs, stampings and machined components Peter Youmans CEO 1939 13 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101; deringerney.com 400 (9) N/A N/A 250—499 Custom precious metal alloys Jay Policastro President & CEO 1812 (10) 14 LEGO Systems Inc. (11) 100 Print Shop Road, Enfield 06082 860-749-2291; lego.com 400 N/A 31,000 N/A Toy manufacturer Skip Kodak Senior vice president, Global Commercial Operations 1932 15 Hobson & Motzer Inc. (12) 30 Airline Drive, Durham 06422 860-349-1756; hobsonmotzer.com 400 (13) N/A N/A 250—499 Manufacturer of precision metal stamping and advanced machining Brian King CEO, Vantedge Medical 1912 16 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724; trinity-solar.com 400 (7) 400 (7) 3,317 (7) N/A Family-owned solar energy company Tom Pollock CEO 1994 17 Deloitte LLP and subsidiaries 185 Asylum St., Hartford 06103 860-725-3000; deloitte.com 383 1,367 N/A N/A Audit, tax, financial advisory and consulting Richard Tavolieri Managing partner 1895 18 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515; ebmpapst.us 360 N/A 13,800 N/A Designer and manufacturer of high efficiency motor Mark J. Shiring CEO, Air Technology Americas 1981 19 PCX Aerosystems (14) 300 Fenn Road, Newington 06111 860-666-2471; pcxaero.com 339 339 631 N/A Manufacturer of highly engineered, critical flight components and composite fabrications Thomas Holzthum CEO Aris Fotos President, Conn. operations 1900 20 Avna Inc. (15) 200 Ellis St., New Britain 06051 860-225-8707; avna.com 320 320 480 N/A Manufacturer of medical devices, surgical components & sub-assemblies for mechanical, precision-powered & robotic applications Jason M. Howey President & CEO 1911 21 Ernst & Young LLP 20 Church St., Hartford 06103 860-247-3100; ey.com 262 663 N/A N/A Audit, assurance and consulting services, tax, strategy and transaction advisory and due diligence, risk advisory Sean Riegler Managing partner 1918 22 Charter Oak Building Maintenance Inc. 3466 Main St., Hartford 06120 860-632-5667; cobm.net 254 254 254 N/A Facility maintenance and janitorial services Kenia M. Thomas CEO 1988 23 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481; ulbrich.com 250 350 800 N/A Manufacturer of precision re-roller and distributor of stainless steel & special metals for applications worldwide Chris Ulbrich Chairman of the board Jonathan Ulbrich CEO 1924 Source: Each company via survey as of Q2-Q3 2025, company websites and Connecticut Department of Labor market research data. Note: N/A = Not available or not applicable. (1) Banks, private colleges and employee-owned (ESOP) companies were not considered for this list. (2) Local employee counts fall within this range, according to the Connecticut Department of Labor market research data as of July 21, 2025. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) According to PitchBook. (5) In April 2024, Arcline Investment Management LP acquired Kaman Corp. for $1.8 billion, shares ceased trading on the New York Stock Exchange. (6) Employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of the restructuring. (7) Employee counts from 2024 survey. (8) Data from Q3 2023. (9) Data from Town of Bloomfield Annual Financial Report, June 2023 (10) Founding year for J.M. Ney Co. (11) In January 2023, announced plans to consolidate North American headquarters in Boston; the move began this year and is expected to be completed in 2026. The LEGO Group is privately held and based in Billund, Denmark. (12) San Jose, Calif.-based Vantedge Medical acquired Hobson & Motzer in August 2024. (13) Data from hobsonmotzer.com (14) Formerly SPX Precision Components. (15) Formerly Okay Industries. -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com 2 Healthtrax Fitness & Wellness 622 Hebron Ave., Suite 200A, Glastonbury 06033 860-633-5572; healthtrax.com N/A N/A 1,500 (4) 1,000—4,999 Health and fitness centers Kenneth Navarro CEO 1979 3 Kaman Corp. (5) 1332 Blue Hills Ave., Bloomfield 06002 860-243-7100; kaman.com 990 (6) N/A N/A 1,000—4,999 Manufacturer of aerospace parts and components Ross Sealfon President & CEO 1945 4 DATTCO Inc. 583 South St., New Britain 06051 860-229-4878; dattco.com 900 (7) 1,600 (7) 2,000 (7) 500—999 Transportation provider with vehicle sales and service, fleet management, charter services and tours nationwide Donald DeVivo President 1924 5 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641; lazparking.com 837 1,059 20,000 N/A Parking operator and digital parking technology Alan Lazowski Chairman & CEO 1981 6 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399; data-mail.com 800 800 800 N/A Family-owned direct marketing firm Andy Mandell Owner 1971 7 PwC 185 Asylum St., Hartford 06103 860-241-7000; pwc.com N/A N/A N/A 500—999 Accounting and audit services Keith J. Hubert Office managing partner 1890 8 Manafort Bros. Inc. 414 New Britain Ave., Plainville 06062 860-229-4853; manafort.com N/A N/A N/A 500—999 Family-owned provider of construction and demolition services James A. Manafort Jr. President 1919 9 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688; momentumsolar.com 578 (7) 578 (7) 2,500 (7) N/A Solar technology installations Arthur Souritzidis CEO 2009 10 TRUMPF Inc. 111 Hyde Road, Farmington 06032 860-255-6000; trumpf.com 478 802 1,662 N/A Manufacturer of industrial lasers and fabricating Lutz Labisch President & CEO 1969 11 Benchmark Senior Living 432 Buckland Road, South Windsor 06074 781-786-7745; benchmarkseniorliving.com 431 (8) 2,204 (8) 6,491 (8) 500—999 Senior living communities with independent living, assisted living, respite care, mind and memory care, skilled nursing Tom Grape Founder, chairman & CEO 1997 12 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341; ctspring.com 400 N/A 400 N/A Family-owned manufacturer of springs, stampings and machined components Peter Youmans CEO 1939 13 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101; deringerney.com 400 (9) N/A N/A 250—499 Custom precious metal alloys Jay Policastro President & CEO 1812 (10) 14 LEGO Systems Inc. (11) 100 Print Shop Road, Enfield 06082 860-749-2291; lego.com 400 N/A 31,000 N/A Toy manufacturer Skip Kodak Senior vice president, Global Commercial Operations 1932 15 Hobson & Motzer Inc. (12) 30 Airline Drive, Durham 06422 860-349-1756; hobsonmotzer.com 400 (13) N/A N/A 250—499 Manufacturer of precision metal stamping and advanced machining Brian King CEO, Vantedge Medical 1912 16 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724; trinity-solar.com 400 (7) 400 (7) 3,317 (7) N/A Family-owned solar energy company Tom Pollock CEO 1994 17 Deloitte LLP and subsidiaries 185 Asylum St., Hartford 06103 860-725-3000; deloitte.com 383 1,367 N/A N/A Audit, tax, financial advisory and consulting Richard Tavolieri Managing partner 1895 18 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515; ebmpapst.us 360 N/A 13,800 N/A Designer and manufacturer of high efficiency motor Mark J. Shiring CEO, Air Technology Americas 1981 19 PCX Aerosystems (14) 300 Fenn Road, Newington 06111 860-666-2471; pcxaero.com 339 339 631 N/A Manufacturer of highly engineered, critical flight components and composite fabrications Thomas Holzthum CEO Aris Fotos President, Conn. operations 1900 20 Avna Inc. (15) 200 Ellis St., New Britain 06051 860-225-8707; avna.com 320 320 480 N/A Manufacturer of medical devices, surgical components & sub-assemblies for mechanical, precision-powered & robotic applications Jason M. Howey President & CEO 1911 21 Ernst & Young LLP 20 Church St., Hartford 06103 860-247-3100; ey.com 262 663 N/A N/A Audit, assurance and consulting services, tax, strategy and transaction advisory and due diligence, risk advisory Sean Riegler Managing partner 1918 22 Charter Oak Building Maintenance Inc. 3466 Main St., Hartford 06120 860-632-5667; cobm.net 254 254 254 N/A Facility maintenance and janitorial services Kenia M. Thomas CEO 1988 23 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481; ulbrich.com 250 350 800 N/A Manufacturer of precision re-roller and distributor of stainless steel & special metals for applications worldwide Chris Ulbrich Chairman of the board Jonathan Ulbrich CEO 1924 Source: Each company via survey as of Q2-Q3 2025, company websites and Connecticut Department of Labor market research data. Note: N/A = Not available or not applicable. (1) Banks, private colleges and employee-owned (ESOP) companies were not considered for this list. (2) Local employee counts fall within this range, according to the Connecticut Department of Labor market research data as of July 21, 2025. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) According to PitchBook. (5) In April 2024, Arcline Investment Management LP acquired Kaman Corp. for $1.8 billion, shares ceased trading on the New York Stock Exchange. (6) Employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of the restructuring. (7) Employee counts from 2024 survey. (8) Data from Q3 2023. (9) Data from Town of Bloomfield Annual Financial Report, June 2023 (10) Founding year for J.M. Ney Co. (11) In January 2023, announced plans to consolidate North American headquarters in Boston; the move began this year and is expected to be completed in 2026. The LEGO Group is privately held and based in Billund, Denmark. (12) San Jose, Calif.-based Vantedge Medical acquired Hobson & Motzer in August 2024. (13) Data from hobsonmotzer.com (14) Formerly SPX Precision Components. (15) Formerly Okay Industries. -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com 2 Healthtrax Fitness & Wellness 622 Hebron Ave., Suite 200A, Glastonbury 06033 860-633-5572; healthtrax.com N/A N/A 1,500 (4) 1,000—4,999 Health and fitness centers Kenneth Navarro CEO 1979 3 Kaman Corp. (5) 1332 Blue Hills Ave., Bloomfield 06002 860-243-7100; kaman.com 990 (6) N/A N/A 1,000—4,999 Manufacturer of aerospace parts and components Ross Sealfon President & CEO 1945 4 DATTCO Inc. 583 South St., New Britain 06051 860-229-4878; dattco.com 900 (7) 1,600 (7) 2,000 (7) 500—999 Transportation provider with vehicle sales and service, fleet management, charter services and tours nationwide Donald DeVivo President 1924 5 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641; lazparking.com 837 1,059 20,000 N/A Parking operator and digital parking technology Alan Lazowski Chairman & CEO 1981 6 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399; data-mail.com 800 800 800 N/A Family-owned direct marketing firm Andy Mandell Owner 1971 7 PwC 185 Asylum St., Hartford 06103 860-241-7000; pwc.com N/A N/A N/A 500—999 Accounting and audit services Keith J. Hubert Office managing partner 1890 8 Manafort Bros. Inc. 414 New Britain Ave., Plainville 06062 860-229-4853; manafort.com N/A N/A N/A 500—999 Family-owned provider of construction and demolition services James A. Manafort Jr. President 1919 9 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688; momentumsolar.com 578 (7) 578 (7) 2,500 (7) N/A Solar technology installations Arthur Souritzidis CEO 2009 10 TRUMPF Inc. 111 Hyde Road, Farmington 06032 860-255-6000; trumpf.com 478 802 1,662 N/A Manufacturer of industrial lasers and fabricating Lutz Labisch President & CEO 1969 11 Benchmark Senior Living 432 Buckland Road, South Windsor 06074 781-786-7745; benchmarkseniorliving.com 431 (8) 2,204 (8) 6,491 (8) 500—999 Senior living communities with independent living, assisted living, respite care, mind and memory care, skilled nursing Tom Grape Founder, chairman & CEO 1997 12 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341; ctspring.com 400 N/A 400 N/A Family-owned manufacturer of springs, stampings and machined components Peter Youmans CEO 1939 13 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101; deringerney.com 400 (9) N/A N/A 250—499 Custom precious metal alloys Jay Policastro President & CEO 1812 (10) 14 LEGO Systems Inc. (11) 100 Print Shop Road, Enfield 06082 860-749-2291; lego.com 400 N/A 31,000 N/A Toy manufacturer Skip Kodak Senior vice president, Global Commercial Operations 1932 15 Hobson & Motzer Inc. (12) 30 Airline Drive, Durham 06422 860-349-1756; hobsonmotzer.com 400 (13) N/A N/A 250—499 Manufacturer of precision metal stamping and advanced machining Brian King CEO, Vantedge Medical 1912 16 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724; trinity-solar.com 400 (7) 400 (7) 3,317 (7) N/A Family-owned solar energy company Tom Pollock CEO 1994 17 Deloitte LLP and subsidiaries 185 Asylum St., Hartford 06103 860-725-3000; deloitte.com 383 1,367 N/A N/A Audit, tax, financial advisory and consulting Richard Tavolieri Managing partner 1895 18 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515; ebmpapst.us 360 N/A 13,800 N/A Designer and manufacturer of high efficiency motor Mark J. Shiring CEO, Air Technology Americas 1981 19 PCX Aerosystems (14) 300 Fenn Road, Newington 06111 860-666-2471; pcxaero.com 339 339 631 N/A Manufacturer of highly engineered, critical flight components and composite fabrications Thomas Holzthum CEO Aris Fotos President, Conn. operations 1900 20 Avna Inc. (15) 200 Ellis St., New Britain 06051 860-225-8707; avna.com 320 320 480 N/A Manufacturer of medical devices, surgical components & sub-assemblies for mechanical, precision-powered & robotic applications Jason M. Howey President & CEO 1911 21 Ernst & Young LLP 20 Church St., Hartford 06103 860-247-3100; ey.com 262 663 N/A N/A Audit, assurance and consulting services, tax, strategy and transaction advisory and due diligence, risk advisory Sean Riegler Managing partner 1918 22 Charter Oak Building Maintenance Inc. 3466 Main St., Hartford 06120 860-632-5667; cobm.net 254 254 254 N/A Facility maintenance and janitorial services Kenia M. Thomas CEO 1988 23 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481; ulbrich.com 250 350 800 N/A Manufacturer of precision re-roller and distributor of stainless steel & special metals for applications worldwide Chris Ulbrich Chairman of the board Jonathan Ulbrich CEO 1924 Source: Each company via survey as of Q2-Q3 2025, company websites and Connecticut Department of Labor market research data. Note: N/A = Not available or not applicable. (1) Banks, private colleges and employee-owned (ESOP) companies were not considered for this list. (2) Local employee counts fall within this range, according to the Connecticut Department of Labor market research data as of July 21, 2025. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) According to PitchBook. (5) In April 2024, Arcline Investment Management LP acquired Kaman Corp. for $1.8 billion, shares ceased trading on the New York Stock Exchange. (6) Employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of the restructuring. (7) Employee counts from 2024 survey. (8) Data from Q3 2023. (9) Data from Town of Bloomfield Annual Financial Report, June 2023 (10) Founding year for J.M. Ney Co. (11) In January 2023, announced plans to consolidate North American headquarters in Boston; the move began this year and is expected to be completed in 2026. The LEGO Group is privately held and based in Billund, Denmark. (12) San Jose, Calif.-based Vantedge Medical acquired Hobson & Motzer in August 2024. (13) Data from hobsonmotzer.com (14) Formerly SPX Precision Components. (15) Formerly Okay Industries. -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com 2 Healthtrax Fitness & Wellness 622 Hebron Ave., Suite 200A, Glastonbury 06033 860-633-5572; healthtrax.com N/A N/A 1,500 (4) 1,000—4,999 Health and fitness centers Kenneth Navarro CEO 1979 3 Kaman Corp. (5) 1332 Blue Hills Ave., Bloomfield 06002 860-243-7100; kaman.com 990 (6) N/A N/A 1,000—4,999 Manufacturer of aerospace parts and components Ross Sealfon President & CEO 1945 4 DATTCO Inc. 583 South St., New Britain 06051 860-229-4878; dattco.com 900 (7) 1,600 (7) 2,000 (7) 500—999 Transportation provider with vehicle sales and service, fleet management, charter services and tours nationwide Donald DeVivo President 1924 5 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641; lazparking.com 837 1,059 20,000 N/A Parking operator and digital parking technology Alan Lazowski Chairman & CEO 1981 6 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399; data-mail.com 800 800 800 N/A Family-owned direct marketing firm Andy Mandell Owner 1971 7 PwC 185 Asylum St., Hartford 06103 860-241-7000; pwc.com N/A N/A N/A 500—999 Accounting and audit services Keith J. Hubert Office managing partner 1890 8 Manafort Bros. Inc. 414 New Britain Ave., Plainville 06062 860-229-4853; manafort.com N/A N/A N/A 500—999 Family-owned provider of construction and demolition services James A. Manafort Jr. President 1919 9 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688; momentumsolar.com 578 (7) 578 (7) 2,500 (7) N/A Solar technology installations Arthur Souritzidis CEO 2009 10 TRUMPF Inc. 111 Hyde Road, Farmington 06032 860-255-6000; trumpf.com 478 802 1,662 N/A Manufacturer of industrial lasers and fabricating Lutz Labisch President & CEO 1969 11 Benchmark Senior Living 432 Buckland Road, South Windsor 06074 781-786-7745; benchmarkseniorliving.com 431 (8) 2,204 (8) 6,491 (8) 500—999 Senior living communities with independent living, assisted living, respite care, mind and memory care, skilled nursing Tom Grape Founder, chairman & CEO 1997 12 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341; ctspring.com 400 N/A 400 N/A Family-owned manufacturer of springs, stampings and machined components Peter Youmans CEO 1939 13 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101; deringerney.com 400 (9) N/A N/A 250—499 Custom precious metal alloys Jay Policastro President & CEO 1812 (10) 14 LEGO Systems Inc. (11) 100 Print Shop Road, Enfield 06082 860-749-2291; lego.com 400 N/A 31,000 N/A Toy manufacturer Skip Kodak Senior vice president, Global Commercial Operations 1932 15 Hobson & Motzer Inc. (12) 30 Airline Drive, Durham 06422 860-349-1756; hobsonmotzer.com 400 (13) N/A N/A 250—499 Manufacturer of precision metal stamping and advanced machining Brian King CEO, Vantedge Medical 1912 16 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724; trinity-solar.com 400 (7) 400 (7) 3,317 (7) N/A Family-owned solar energy company Tom Pollock CEO 1994 17 Deloitte LLP and subsidiaries 185 Asylum St., Hartford 06103 860-725-3000; deloitte.com 383 1,367 N/A N/A Audit, tax, financial advisory and consulting Richard Tavolieri Managing partner 1895 18 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515; ebmpapst.us 360 N/A 13,800 N/A Designer and manufacturer of high efficiency motor Mark J. Shiring CEO, Air Technology Americas 1981 19 PCX Aerosystems (14) 300 Fenn Road, Newington 06111 860-666-2471; pcxaero.com 339 339 631 N/A Manufacturer of highly engineered, critical flight components and composite fabrications Thomas Holzthum CEO Aris Fotos President, Conn. operations 1900 20 Avna Inc. (15) 200 Ellis St., New Britain 06051 860-225-8707; avna.com 320 320 480 N/A Manufacturer of medical devices, surgical components & sub-assemblies for mechanical, precision-powered & robotic applications Jason M. Howey President & CEO 1911 21 Ernst & Young LLP 20 Church St., Hartford 06103 860-247-3100; ey.com 262 663 N/A N/A Audit, assurance and consulting services, tax, strategy and transaction advisory and due diligence, risk advisory Sean Riegler Managing partner 1918 22 Charter Oak Building Maintenance Inc. 3466 Main St., Hartford 06120 860-632-5667; cobm.net 254 254 254 N/A Facility maintenance and janitorial services Kenia M. Thomas CEO 1988 23 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481; ulbrich.com 250 350 800 N/A Manufacturer of precision re-roller and distributor of stainless steel & special metals for applications worldwide Chris Ulbrich Chairman of the board Jonathan Ulbrich CEO 1924 Source: Each company via survey as of Q2-Q3 2025, company websites and Connecticut Department of Labor market research data. Note: N/A = Not available or not applicable. (1) Banks, private colleges and employee-owned (ESOP) companies were not considered for this list. (2) Local employee counts fall within this range, according to the Connecticut Department of Labor market research data as of July 21, 2025. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) According to PitchBook. (5) In April 2024, Arcline Investment Management LP acquired Kaman Corp. for $1.8 billion, shares ceased trading on the New York Stock Exchange. (6) Employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of the restructuring. (7) Employee counts from 2024 survey. (8) Data from Q3 2023. (9) Data from Town of Bloomfield Annual Financial Report, June 2023 (10) Founding year for J.M. Ney Co. (11) In January 2023, announced plans to consolidate North American headquarters in Boston; the move began this year and is expected to be completed in 2026. The LEGO Group is privately held and based in Billund, Denmark. (12) San Jose, Calif.-based Vantedge Medical acquired Hobson & Motzer in August 2024. (13) Data from hobsonmotzer.com (14) Formerly SPX Precision Components. (15) Formerly Okay Industries. -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com 4 583 South St., New Britain 06051 860-229-4878; dattco.com (7) 2,000 (7) fleet management, 5 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641; lazparking.com 837 1,059 20,000 N/A Parking operator and 6 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399; data-mail.com 800 800 800 N/A Family-owned direct 7 PwC 185 Asylum St., Hartford 06103 860-241-7000; pwc.com N/A N/A N/A 500—999 Accounting and audit 8 Manafort Bros. Inc. 414 New Britain Ave., Plainville 06062 860-229-4853; manafort.com N/A N/A N/A 500—999 Family-owned provider services 9 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688; momentumsolar.com 578 (7) 578 (7) 2,500 (7) N/A Solar technology 10 TRUMPF Inc. 111 Hyde Road, Farmington 06032 860-255-6000; trumpf.com 478 802 1,662 N/A Manufacturer of industrial 11 Benchmark Senior Living 432 Buckland Road, South Windsor 06074 781-786-7745; benchmarkseniorliving.com 431 (8) 2,204 (8) 6,491 (8) 500—999 Senior living communities assisted living, respite skilled nursing 12 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341; ctspring.com 400 N/A 400 N/A Family-owned manufacturer machined components 13 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101; deringerney.com 400 (9) N/A N/A 250—499 Custom precious 14 LEGO Systems Inc. (11) 100 Print Shop Road, Enfield 06082 860-749-2291; lego.com 400 N/A 31,000 N/A Toy manufacturer 15 Hobson & Motzer Inc. (12) 30 Airline Drive, Durham 06422 860-349-1756; hobsonmotzer.com 400 (13) N/A N/A 250—499 Manufacturer of precision machining 16 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724; trinity-solar.com 400 (7) 400 (7) 3,317 (7) N/A Family-owned solar 17 Deloitte LLP and subsidiaries 185 Asylum St., Hartford 06103 860-725-3000; deloitte.com 383 1,367 N/A N/A Audit, tax, financial 18 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515; ebmpapst.us 360 N/A 13,800 N/A Designer and manufacturer 19 PCX Aerosystems (14) 300 Fenn Road, Newington 06111 860-666-2471; pcxaero.com 339 339 631 N/A Manufacturer of highly components and 20 Avna Inc. (15) 200 Ellis St., New Britain 06051 860-225-8707; avna.com 320 320 480 N/A Manufacturer of medical sub-assemblies for robotic applications 21 Ernst & Young LLP 20 Church St., Hartford 06103 860-247-3100; ey.com 262 663 N/A N/A Audit, assurance and and transaction advisory 22 Charter Oak Building Maintenance Inc. 3466 Main St., Hartford 06120 860-632-5667; cobm.net 254 254 254 N/A Facility maintenance 23 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481; ulbrich.com 250 350 800 N/A Manufacturer of precision stainless steel & special worldwide Source: Each company via survey as of Q2-Q3 2025, company websites and Connecticut Department of Labor market (1) Banks, private colleges and employee-owned (ESOP) companies were not considered for this list. (2) Local employee counts fall within this range, according to the Connecticut Department of Labor market research data as of July 21, 2025. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) According to PitchBook. (5) In April 2024, Arcline Investment Management LP acquired Kaman Corp. for $1.8 billion, shares ceased trading on the New York Stock Exchange. (6) Employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of the restructuring. (7) Employee counts from 2024 survey. (8) Data (9) Data (10) Founding (11) In January move began based in (12) San (13) Data (14) Formerly (15) Formerly -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com