Issue link: https://nebusinessmedia.uberflip.com/i/1546086
HARTFORDBUSINESS.COM | AUGUST 10, 2026 19 The List PRIVATELY-HELD COMPANIES IN GREATER HARTFORD (1) Ranked by number of Conn.-based employees 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 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 60 years, our clients have trusted us to deliver end-to-end facilities solutions, so they can focus on their core business. Experts in: Facilities Services, Preventive Maintenance Programs, Onsite Operations & Maintenance NEMSI SERVICE SOLUTIONS INCREASE PRODUCTIVITY. REDUCE COSTS. 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 DATTCO Inc. (4) 583 South St., New Britain 06051 860-229-4878 • dattco.com 1,169 1,795 2,525 N/A Transportation, vehicle sales and service, fleet management, charter services and tours nationwide Donald DeVivo President 1924 3 SMG Corporate Services 25 Controls Drive, Shelton 06484 800-688-1707 • smgcorporateservices.com 1,100 (5) 3,335 3,989 N/A Cleaning, janitorial and property maintenance services, security guard service, training and background screening services Scott Weintraub President 1924 4 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641 • lazparking.com 837 (6) 1,059 (6) 20,000 (6) N/A Parking operator and digital parking technology Alan Lazowski Chairman & CEO 1981 5 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399 • data-mail.com 743 743 743 N/A Direct marketing firm Bruce Mandell CEO & owner 1971 6 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688 • momentumsolar.com 578 578 2,500 N/A Solar technology installations Arthur Souritzidis CEO 2009 7 Ensign-Bickford Aerospace & Defense Co. 100 Grist Mill Road, Simsbury 06070 860-843-2000 • ebad.com 531 531 864 N/A Manufacturing Jennifer Lewis President 1836 8 TRUMPF Inc. 3 Leibinger Way, Farmington 06032 860-255-6000 • trumpf.com 523 893 1,654 N/A Manufacturer of industrial lasers and fabricating equipment Lutz Labisch President & CEO 1969 9 Allied Printing Services Inc. 1 Allied Way, Manchester 06042 860-643-1101 • alliedprinting.com 520 520 520 N/A Commercial printing, binding products and services John Sommers President & CEO 1949 10 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 11 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515 • ebmpapst.us 473 473 1,073 N/A Designer and manufacturer of high efficiency motors Franz Cerwinka CEO, Air Technology Americas 1981 12 Colt's Manufacturing Co. LLC (7) 545 New Park Ave., West Hartford 06110 860-236-6311 • colt.com 467 467 467 N/A Sporting goods manufacturer Radek Musil CEO, Colt CZ Group Jillair Kubish President & CEO 1836 13 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341 • ctspring.com 400 (6) 400 (6) 400 (6) N/A Manufacturer of springs, stampings, four slide and machined components Peter Youmans CEO 1939 14 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101 • deringerney.com 400 (8) 400 (8) N/A 250—499 Custom precious metal alloys Jay Policastro President & CEO 1812 (9) 15 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724 • trinity-solar.com 400 N/A N/A N/A Family-owned solar energy company RJ Sparks President & CEO 1994 16 Deloitte LLP and subsidiaries City Place I, 185 Asylum St., Hartford 06103 860-725-3000 • deloitte.com 395 1,393 N/A N/A Audit, tax, financial advisory and consulting Richard Tavolieri Managing partner 1895 17 Avna Inc. 200 Ellis St., New Britain 06051 860-225-8707 • avna.com 340 340 450 N/A Medical device manufacturer Jason M. Howey CEO Aaron Mambrino President & CFO 1911 18 The Lyman Farm Inc. 7 Lyman Road, Middlefield 06455 860-349-6000 • lymanorchards.com 330 330 330 N/A Farm with corn maze, pick your own, the Apple Barrel, Lyman Golf, 1741 Pub & Grill John Lyman III Executive vice president 1741 19 Ahlstrom (10) 11 Canal Bank Road, Windsor Locks 06096 860-654-8472 • ahlstrom.com 320 320 7,000 N/A Fiber-based specialty materials Helen Mets President & CEO 1767 20 PwC U.S. (PricewaterhouseCoopers) 185 Asylum St., Hartford 06103 860-241-7000 • pwc.com 300 700 N/A N/A Accounting and audit services Keith J. Hubert Office managing partner 1890 21 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481 • ulbrich.com 300 350 800 N/A Manufacturer of precision re-rolled strip & foil and fine, flat, round and shaped wire of stainless steel & special metals Chris Ulbrich Chairman of the board Jonathan Ulbrich CEO 1924 22 Stew Leonard's 100 Westport Ave., Norwalk 06851 203-847-7214 • stewleonards.com 259 (11) 773 2,500 N/A Grocery stores, wine & spirits Stew Leonard Jr. President & CEO Blake Leonard President, Stew Leonard's Wines & Spirits Jake Tavello COO, Stew Leonard's 1969 Source: Each company via survey, company websites and Connecticut Department of Labor market research data. Note: Durham's Hobson & Motzer Inc. is now part of Calif.-based Vantedge Medical; unable to confirm local employee count by press time. Farmington's Mott Corp. is now a unit of IDEX Corp. and publicly traded. Bristol's Barnes Aerospace was acquired by Apollo Global Management. In October 2025, the company separated into Barnes Aerospace and The Industrial Solutions Group. Barnes Aerospace last reported 300 employees in Greater Hartford on HBJ's 2024 survey. Bloomfield's Kaman Corp. employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of a restructuring at that time. Since being acquired by Arcline Investment Management, the company has been divided into Kamatics, Kaman Air Vehicles and KMM Precision Measuring; unable to confirm data for the new entities by press time. 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 24, 2026. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) School bus division shuttles over 140,000 students across Conn. and R.I. daily. Subsidiaries are DeVivo Cos., Thermo King Northeast, Northeast Tool and New England Truckmaster. (5) Hartford office. (6) From HBJ's 2025 survey. (7) Subsidiary of Colt CZ Group since March 2021. (8) Town of Bloomfield June 2024 Annual Financial Report. (9) Founding year for J.M. Ney Co. (10) Formerly Ahlstrom-Munksjö. (11) Newington office. -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com 2 583 South St., New Britain 06051 860-229-4878 • dattco.com 1,795 2,525 N/A management, charter services and tours nationwide President 1924 3 SMG Corporate Services 25 Controls Drive, Shelton 06484 800-688-1707 • smgcorporateservices.com 1,100 (5) 3,335 3,989 N/A Cleaning, janitorial and property maintenance services, security guard service, training and background screening services Scott Weintraub President 1924 4 LAZ Parking One Financial Plaza, Hartford 06103 860-522-7641 • lazparking.com 837 (6) 1,059 (6) 20,000 (6) N/A Parking operator and digital parking technology Alan Lazowski Chairman & CEO 1981 5 Data Mail Inc. 240 Hartford Ave., Newington 06111 860-666-0399 • data-mail.com 743 743 743 N/A Direct marketing firm Bruce Mandell CEO & owner 1971 6 Momentum Solar 80 Clark Drive, Unit A-1, East Berlin 06023 888-666-3688 • momentumsolar.com 578 578 2,500 N/A Solar technology installations Arthur Souritzidis CEO 2009 7 Ensign-Bickford Aerospace & Defense Co. 100 Grist Mill Road, Simsbury 06070 860-843-2000 • ebad.com 531 531 864 N/A Manufacturing Jennifer Lewis President 1836 8 TRUMPF Inc. 3 Leibinger Way, Farmington 06032 860-255-6000 • trumpf.com 523 893 1,654 N/A Manufacturer of industrial lasers and fabricating equipment Lutz Labisch President & CEO 1969 9 Allied Printing Services Inc. 1 Allied Way, Manchester 06042 860-643-1101 • alliedprinting.com 520 520 520 N/A Commercial printing, binding products and services John Sommers President & CEO 1949 10 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 11 ebm-papst Inc. 100 Hyde Road, Farmington 06032 860-674-1515 • ebmpapst.us 473 473 1,073 N/A Designer and manufacturer of high efficiency motors Franz Cerwinka CEO, Air Technology Americas 1981 12 Colt's Manufacturing Co. LLC (7) 545 New Park Ave., West Hartford 06110 860-236-6311 • colt.com 467 467 467 N/A Sporting goods manufacturer Radek Musil CEO, Colt CZ Group Jillair Kubish President & CEO 1836 13 Connecticut Spring & Stamping Corp. 48 Spring Lane, Farmington 06032 860-677-1341 • ctspring.com 400 (6) 400 (6) 400 (6) N/A Manufacturer of springs, stampings, four slide and machined components Peter Youmans CEO 1939 14 Deringer-Ney Inc. 353 Woodland Ave., Bloomfield 06002 860-286-6101 • deringerney.com 400 (8) 400 (8) N/A 250—499 Custom precious metal alloys Jay Policastro President & CEO 1812 (9) 15 Trinity Solar 7 McKee Place, Cheshire 06410 203-701-3724 • trinity-solar.com 400 N/A N/A N/A Family-owned solar energy company RJ Sparks President & CEO 1994 16 Deloitte LLP and subsidiaries City Place I, 185 Asylum St., Hartford 06103 860-725-3000 • deloitte.com 395 1,393 N/A N/A Audit, tax, financial advisory and consulting Richard Tavolieri Managing partner 1895 17 Avna Inc. 200 Ellis St., New Britain 06051 860-225-8707 • avna.com 340 340 450 N/A Medical device manufacturer Jason M. Howey CEO Aaron Mambrino President & CFO 1911 18 The Lyman Farm Inc. 7 Lyman Road, Middlefield 06455 860-349-6000 • lymanorchards.com 330 330 330 N/A Farm with corn maze, pick your own, the Apple Barrel, Lyman Golf, 1741 Pub & Grill John Lyman III Executive vice president 1741 19 Ahlstrom (10) 11 Canal Bank Road, Windsor Locks 06096 860-654-8472 • ahlstrom.com 320 320 7,000 N/A Fiber-based specialty materials Helen Mets President & CEO 1767 20 PwC U.S. (PricewaterhouseCoopers) 185 Asylum St., Hartford 06103 860-241-7000 • pwc.com 300 700 N/A N/A Accounting and audit services Keith J. Hubert Office managing partner 1890 21 Ulbrich Stainless Steels & Special Metals Inc. 1 Dudley Ave., Wallingford 06492 203-239-4481 • ulbrich.com 300 350 800 N/A Manufacturer of precision re-rolled strip & foil and fine, flat, round and shaped wire of stainless steel & special metals Chris Ulbrich Chairman of the board Jonathan Ulbrich CEO 1924 22 Stew Leonard's 100 Westport Ave., Norwalk 06851 203-847-7214 • stewleonards.com 259 (11) 773 2,500 N/A Grocery stores, wine & spirits Stew Leonard Jr. President & CEO Blake Leonard President, Stew Leonard's Wines & Spirits Jake Tavello COO, Stew Leonard's 1969 Source: Each company via survey, company websites and Connecticut Department of Labor market research data. Note: Durham's Hobson & Motzer Inc. is now part of Calif.-based Vantedge Medical; unable to confirm local employee count by press time. Farmington's Mott Corp. is now a unit of IDEX Corp. and publicly traded. Bristol's Barnes Aerospace was acquired by Apollo Global Management. In October 2025, the company separated into Barnes Aerospace and The Industrial Solutions Group. Barnes Aerospace last reported 300 employees in Greater Hartford on HBJ's 2024 survey. Bloomfield's Kaman Corp. employed just below 1,000 employees in May 2024, according to a July 2024 HBJ story, with further cuts expected as part of a restructuring at that time. Since being acquired by Arcline Investment Management, the company has been divided into Kamatics, Kaman Air Vehicles and KMM Precision Measuring; unable to confirm data for the new entities by press time. 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 24, 2026. (3) Ranked #229 on Forbes 2024 list of America's largest private companies with a total employee count of 3,500. (4) School bus division shuttles over 140,000 students across Conn. and R.I. daily. Subsidiaries are DeVivo Cos., Thermo King Northeast, Northeast Tool and New England Truckmaster. (5) Hartford office. (6) From HBJ's 2025 survey. (7) Subsidiary of Colt CZ Group since March 2021. (8) Town of Bloomfield June 2024 Annual Financial Report. (9) Founding year for J.M. Ney Co. (10) Formerly Ahlstrom-Munksjö. (11) Newington office. -Compiled by: Stephanie R. Meagher, research@nebusinessmedia.com