![Rainer Bosselmann](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Rainer Bosselmann
No open positions remaining
Net worth: 157 M $ as of 2026-06-29
Profile
Rainer H.
Bosselmann was the founder of Argan, Inc. since 1961, serving as Chairman & Chief Executive Officer from 2003 to 2022.
Former positions include Chairman, President & Chief Executive Officer at Arguss Communications, Inc. from 1997 to 2002, Vice Chairman & President at Jupiter National, Inc. from 1991 to 1995, Director at Midasco LLC from 2008 to 2011, Director at Morgan Contracting, Inc. from 2010 to 2013, Independent Director at The Roberts Co., Inc. from 2008 to 2015, Principal at Holding Capital Group, Inc., and Operating Committee Member at MSR Advisors Inc.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
ARGAN, INC. 1.4% | 2025-09-14 | 196,723 ( 1.4% ) | 157 M $ | 2026-06-29 |
Former positions of Rainer Bosselmann
| Companies | Position | End |
|---|---|---|
| ARGAN, INC. | Chief Executive Officer | 2022-08-15 |
The Roberts Co., Inc.
 The Roberts Co., Inc. HomebuildingConsumer Durables Provides exterior renovation and vinyl siding contracting services | Director/Board Member | 2015-11-30 |
Morgan Contracting, Inc.
 Morgan Contracting, Inc. Environmental ServicesIndustrial Services Provides construction services for water and waste water infrastructure | Director/Board Member | 2012-12-31 |
Midasco LLC
 Midasco LLC Engineering & ConstructionIndustrial Services Provides construction, installation and maintenance services for transport and traffic signals | Director/Board Member | 2010-12-31 |
Arguss Communications, Inc.
 Arguss Communications, Inc. Industrial MachineryProducer Manufacturing Constructs, maintains, and repairs communication, cable, and data systems | Chief Executive Officer | 2002-06-30 |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
18
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
Argan, Inc.
 Argan, Inc. Engineering & ConstructionIndustrial Services Provides engineering, procurement and construction services for power, industrial & telecom industry | Industrial Services |
Arguss Communications, Inc.
Arguss Communications, Inc. Industrial MachineryProducer Manufacturing Constructs, maintains, and repairs communication, cable, and data systems | Producer Manufacturing |
Jupiter National, Inc.
 Jupiter National, Inc. Miscellaneous Commercial ServicesCommercial Services Business Development Co. | Commercial Services |
MSR Advisors Inc.
 MSR Advisors Inc. Investment ManagersFinance MSR Advisors invests in middle market companies located in the United States. The firm focuses across a broad range of sectors and industries. It provides financing for buyout and growth stage capital transactions. | Finance |
Holding Capital Group, Inc.
 Holding Capital Group, Inc. Investment ManagersFinance Alternative investment manager | Finance |
Midasco LLC
Midasco LLC Engineering & ConstructionIndustrial Services Provides construction, installation and maintenance services for transport and traffic signals | Industrial Services |
Morgan Contracting, Inc.
Morgan Contracting, Inc. Environmental ServicesIndustrial Services Provides construction services for water and waste water infrastructure | Industrial Services |
The Roberts Co., Inc.
The Roberts Co., Inc. HomebuildingConsumer Durables Provides exterior renovation and vinyl siding contracting services | Consumer Durables |
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