![John Sennott](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>)
Net worth: 730 335 $ as of 30/06/2026
John Langton Sennott is the founder of Beacon Advisors, founded in 2001, where the title held was Managing Partner from 2001 to 2003.
Current jobs include Director at Hartford Stage Co., Director at Simsbury Meadows Performing Arts Center, Director at Ategrity Specialty Insurance Company Holdings starting in 2025, Director at ALPS Corp.
(Montana), and Director at Stranded Oil Resources Corp.
Former jobs include Chairman, President & Chief Executive Officer at CapSpecialty, Inc. from 2019 to 2022; President & Chief Executive Officer at Capitol Indemnity Corp.; Chief Financial Officer & Senior Vice President at Alleghany Corp.
from 2013 to 2019; Chief Corporate Strategy Officer & Executive VP at Allied World Assurance Company Holdings AG from 2010 to 2012; Chief Financial Officer & Senior Vice President at Alleghany Insurance Holdings LLC (Invt Port) from 2013 to 2019; Manager-Business Assurance Group at Coopers & Lybrand LLP; Chief Financial Officer & Senior Vice President at AW Underwriters Inc. from 2003 to 2008; Trustee at Connecticut Science Center; and Chief Operating Officer at Allied World Insurance Co. in 2010.
Education includes an undergraduate degree from the University of Massachusetts, conferred in 1987.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 11/06/2026 | 30,380 ( 0.06% ) | 730 335 $ | 30/06/2026 |
| Companies | Position | Start |
|---|---|---|
| ATEGRITY SPECIALTY INSURANCE COMPANY HOLDINGS | Director/Board Member | 10/06/2025 |
Stranded Oil Resources Corp.
 Stranded Oil Resources Corp. Integrated OilEnergy Minerals Explores and produces oil and gas | Director/Board Member | - |
ALPS Corp. (Montana)
 ALPS Corp. (Montana) Insurance Brokers/ServicesFinance Provides insurance services for lawyers | Director/Board Member | - |
Hartford Stage Co.
 Hartford Stage Co. Media ConglomeratesConsumer Services Operates theater | Director/Board Member | - |
Simsbury Meadows Performing Arts Center | Director/Board Member | - |
| Companies | Position | End |
|---|---|---|
CapSpecialty, Inc.
 CapSpecialty, Inc. Property/Casualty InsuranceFinance Provides property and casualty insurance services | Chief Executive Officer | 31/08/2022 |
| ALLEGHANY CORPORATION | Director of Finance/CFO | 01/07/2019 |
Alleghany Insurance Holdings LLC (Invt Port)
 Alleghany Insurance Holdings LLC (Invt Port) Investment ManagersFinance Alleghany-IP seeks to create stockholder value through the ownership and management of a small group of operating businesses and investments, employing a core position in property and casualty insurance. The firm seeks attractive investment opportunities, delegates responsibilities to competent and motivated managers, defines risk parameters, sets management goals for their operating businesses, ensures that managers are provided with incentives to meet these goals and monitors their progress. The operating businesses function in an entrepreneurial climate as quasi-autonomous enterprises. Alleghany's management philosophy is conservative. They avoid investment fads and fashions in favor of acquiring relatively few interests in basic financial and industrial enterprises that offer the potential to deliver long-term value to the investor. | Director of Finance/CFO | 01/06/2019 |
| ALLIED WORLD ASSURANCE COMPANY HLDGS LTD | Corporate Officer/Principal | 09/04/2012 |
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Active
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Listed companies
Private companies
1st degree connections
1st degree companies
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Executives
| Private companies | 16 |
|---|---|
Alleghany Corp.
 Alleghany Corp. Property/Casualty InsuranceFinance Provides property and casualty reinsurance and insurance and financial services | Finance |
CapSpecialty, Inc.
CapSpecialty, Inc. Property/Casualty InsuranceFinance Provides property and casualty insurance services | Finance |
Allied World Assurance Company Holdings AG
 Allied World Assurance Company Holdings AG Multi-Line InsuranceFinance Operates as holding company whose subsidiaries provides property, casualty and specialty insurance and reinsurance solutions | Finance |
Alleghany Insurance Holdings LLC (Invt Port)
Alleghany Insurance Holdings LLC (Invt Port) Investment ManagersFinance Alleghany-IP seeks to create stockholder value through the ownership and management of a small group of operating businesses and investments, employing a core position in property and casualty insurance. The firm seeks attractive investment opportunities, delegates responsibilities to competent and motivated managers, defines risk parameters, sets management goals for their operating businesses, ensures that managers are provided with incentives to meet these goals and monitors their progress. The operating businesses function in an entrepreneurial climate as quasi-autonomous enterprises. Alleghany's management philosophy is conservative. They avoid investment fads and fashions in favor of acquiring relatively few interests in basic financial and industrial enterprises that offer the potential to deliver long-term value to the investor. | Finance |
Coopers & Lybrand LLP
 Coopers & Lybrand LLP Miscellaneous Commercial ServicesCommercial Services Provides accounting services | Commercial Services |
University of Massachusetts
 University of Massachusetts Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Capitol Indemnity Corp.
 Capitol Indemnity Corp. Insurance Brokers/ServicesFinance Provides insurance services for small and mid-sized businesses | Finance |
AW Underwriters Inc.
 AW Underwriters Inc. Property/Casualty InsuranceFinance Provides insurance services | Finance |
Connecticut Science Center
 Connecticut Science Center Other Consumer ServicesConsumer Services Operates science museum | Consumer Services |
Beacon Advisors | |
ALPS Corp. (Montana)
ALPS Corp. (Montana) Insurance Brokers/ServicesFinance Provides insurance services for lawyers | Finance |
Hartford Stage Co.
Hartford Stage Co. Media ConglomeratesConsumer Services Operates theater | Consumer Services |
Stranded Oil Resources Corp.
Stranded Oil Resources Corp. Integrated OilEnergy Minerals Explores and produces oil and gas | Energy Minerals |
Allied World Insurance Co.
 Allied World Insurance Co. Insurance Brokers/ServicesFinance Operates as an insurance company | Finance |
Simsbury Meadows Performing Arts Center | |
Ategrity Specialty Holdings LLC
 Ategrity Specialty Holdings LLC Property/Casualty InsuranceFinance Provides property and casualty insurance services | Finance |
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