John F. Brennan, Jr., Sirios Capital

John F. Brennan, Jr. co-founded Sirios Capital Management, L.P. and currently serves as its Managing Director. See contact routes.

About John F. Brennan, Jr.

John F. Brennan, Jr. co-founded Sirios Capital Management, L.P. and currently serves as its Managing Director. Sirios Capital Management was formed on July 1, 1999. Prior to co-founding Sirios, Mr. Brennan was a Senior Vice President of MFS Investment Management where he served as Portfolio Manager and Member of the MFS Advisory Board and MFS Equity Management Group. He completed the Manufacturing Management Program at General Electric from 1981 through 1983.

John F. Brennan, Jr. at a glance

Role
Executive Officer
Organization
Sirios Capital Partners
Location
Boston
Investor type
Private Equity

Frequently asked about John F. Brennan, Jr.

What does John F. Brennan, Jr. invest in?
We have not verified a stated sector or stage focus for John F. Brennan, Jr. at Sirios Capital Partners (Boston). The profile lists the organization, location and investors we track alongside them.
How do I contact John F. Brennan, Jr.?
John F. Brennan, Jr.'s published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.
Where is John F. Brennan, Jr. based?
John F. Brennan, Jr. is based in Boston.

Details on this investor come from filing and round data held in the StartupFundraising directory, refreshed on ingest. Founders use profiles like this one to qualify fit and to shortlist investors in Boston.

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