JOHN WINTHROP

Corporate Board Profile

Tech Score: 0/100

← Back to All Directors

Pioneer Floating Rate Fund, Inc.

Filing Date	Source Excerpt
2006-06-14	President, John Winthrop & Co., Inc. (private investment firm)
2007-08-02	President, John Winthrop & Co., Inc. (private investment firm)

PIONEER HIGH INCOME FUND, INC.

Filing Date	Source Excerpt
2003-09-17	President, John Winthrop & Co., Inc. (private investment firm)
2004-10-06	President, John Winthrop & Co., Inc. (private investment firm)
2005-07-11	President, John Winthrop & Co., Inc. (private investment firm)
2006-08-08	President, John Winthrop & Co., Inc. (private investment firm)
2007-08-02	President, John Winthrop & Co., Inc. (private investment firm)

PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC.

Filing Date	Source Excerpt
2004-10-06	President, John Winthrop & Co., Inc. (private investment firm)
2005-07-11	President, John Winthrop & Co., Inc. (private investment firm)
2006-08-08	President, John Winthrop & Co., Inc. (private investment firm)
2007-08-02	President, John Winthrop & Co., Inc. (private investment firm)

PIONEER MUNICIPAL HIGH INCOME FUND, INC.

Filing Date	Source Excerpt
2004-10-06	President, John Winthrop & Co., Inc. (private investment firm)
2005-07-11	President, John Winthrop & Co., Inc. (private investment firm)
2006-08-08	President, John Winthrop & Co., Inc. (private investment firm)
2007-08-02	President, John Winthrop & Co., Inc. (private investment firm)

Source material: SEC submissions metadata and DEF 14A proxy filings from EDGAR. Last updated: 2026-03-22