Joan Whelton

Joan Whelton is listed publicly as Executive Director at Cabot-Wellington, LLC, a Boston-based single-family office. Cabot-Wellington’s official site lists the firm at 22 Batterymarch Street in Boston, and Massinvestor identifies Whelton as part of the firm’s investment team.

Cabot-Wellington was founded in 1996 and manages wealth and a diversified investment portfolio for the Cabot family. Private Equity International describes the firm as focused on long-term capital preservation and global asset allocation, while Massinvestor says it provides financial advice, investment services, recordkeeping, and other services to descendants of Godfrey Lowell Cabot and to Thomas D. Cabot and Virginia Wellington Cabot family members.

Whelton also appears in philanthropic records connected to the Virginia Wellington Cabot Foundation. Cause IQ lists Joan M. Whelton as a trustee and “Secretary / Executive Director” for the foundation, which was formed in 1993 and reported $44.9 million in total assets for fiscal year 2024. Public sources reviewed did not verify her education or earlier career history.

• Cabot-Wellington appears to operate primarily as a private family office rather than a conventional venture fund or open angel syndicate; its public profile emphasizes family wealth management, recordkeeping, and long-term portfolio management.
• Private Equity International summarizes the firm’s mandate as managing the Cabot family’s wealth and diversified investment portfolio with a focus on “long-term capital preservation and global asset allocation.”
• Massinvestor classifies Cabot-Wellington as a family investment office and lists its stage focus as Middle Market.
• Massinvestor lists the firm’s industry focus as business services, financial services, manufacturing and industrial, real estate and construction, and transportation and distribution.
• SEC 13F-related sources show Cabot-Wellington also holds public-market ETF positions, indicating a diversified asset-allocation component alongside any private-market activity.